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git01.mediatek.com / haproxy / 51d861a44f4c872184d1f7dcc8ef1e1b4793c982 / . / src / proto_http.c
blob: d331eb13e1b59e1f1ea463620ce8b4830176d18a [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 Tarreau9fbe18e2015-05-01 22:42:08 +0200[diff] [blame]3136 /* we may have to wait for the request's body */
3137 if ((s->be->options & PR_O_WREQ_BODY) &&
3138 (msg->body_len || (msg->flags & HTTP_MSGF_TE_CHNK)))
3139 req->analysers |= AN_REQ_HTTP_BODY;
3140
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3141 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3142 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3143 req->analyse_exp = TICK_ETERNITY;
3144 return 1;
3145
3146 return_bad_req:
3147 /* We centralize bad requests processing here */
3148 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3149 /* we detected a parsing error. We want to archive this request
3150 * in the dedicated proxy area for later troubleshooting.
3151 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3152 http_capture_bad_message(&sess->fe->invalid_req, s, msg, msg->msg_state, sess->fe);
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3153 }
3154
3155 txn->req.msg_state = HTTP_MSG_ERROR;
3156 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3157 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3158
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]3159 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]3160 if (sess->listener->counters)
3161 sess->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3162
3163 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]3164 if (!(s->flags & SF_ERR_MASK))
3165 s->flags |= SF_ERR_PRXCOND;
3166 if (!(s->flags & SF_FINST_MASK))
3167 s->flags |= SF_FINST_R;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3168
3169 req->analysers = 0;
3170 req->analyse_exp = TICK_ETERNITY;
3171 return 0;
3172}
3173
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3174
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3175/* This function prepares an applet to handle the stats. It can deal with the
3176 * "100-continue" expectation, check that admin rules are met for POST requests,
3177 * and program a response message if something was unexpected. It cannot fail
3178 * and always relies on the stats applet to complete the job. It does not touch
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3179 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3180 * s->target which is supposed to already point to the stats applet. The caller
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3181 * is expected to have already assigned an appctx to the stream.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3182 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3183int http_handle_stats(struct stream *s, struct channel *req)
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3184{
3185 struct stats_admin_rule *stats_admin_rule;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]3186 struct stream_interface *si = &s->si[1];
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3187 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3188 struct http_txn *txn = s->txn;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3189 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3190 struct uri_auth *uri_auth = s->be->uri_auth;
3191 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3192 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3193
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3194 appctx = si_appctx(si);
3195 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3196 appctx->st1 = appctx->st2 = 0;
3197 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3198 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3199 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn->meth != HTTP_METH_HEAD))
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3200 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3201
3202 uri = msg->chn->buf->p + msg->sl.rq.u;
3203 lookup = uri + uri_auth->uri_len;
3204
3205 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3206 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3207 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3208 break;
3209 }
3210 }
3211
3212 if (uri_auth->refresh) {
3213 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3214 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3215 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3216 break;
3217 }
3218 }
3219 }
3220
3221 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3222 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3223 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3224 break;
3225 }
3226 }
3227
3228 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3229 if (memcmp(h, ";st=", 4) == 0) {
3230 int i;
3231 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3232 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3233 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3234 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3235 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3236 break;
3237 }
3238 }
3239 break;
3240 }
3241 }
3242
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3243 appctx->ctx.stats.scope_str = 0;
3244 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3245 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3246 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3247 int itx = 0;
3248 const char *h2;
3249 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3250 const char *err;
3251
3252 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3253 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3254 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3255 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3256 itx++;
3257 h++;
3258 }
3259
3260 if (itx > STAT_SCOPE_TXT_MAXLEN)
3261 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3262 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3263
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3264 /* scope_txt = search query, appctx->ctx.stats.scope_len is always <= STAT_SCOPE_TXT_MAXLEN */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3265 memcpy(scope_txt, h2, itx);
3266 scope_txt[itx] = '\0';
3267 err = invalid_char(scope_txt);
3268 if (err) {
3269 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3270 appctx->ctx.stats.scope_str = 0;
3271 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3272 }
3273 break;
3274 }
3275 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3276
3277 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3278 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3279 int ret = 1;
3280
3281 if (stats_admin_rule->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3282 ret = acl_exec_cond(stats_admin_rule->cond, s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3283 ret = acl_pass(ret);
3284 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3285 ret = !ret;
3286 }
3287
3288 if (ret) {
3289 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3290 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3291 break;
3292 }
3293 }
3294
3295 /* Was the status page requested with a POST ? */
Willy Tarreau9fbe18e2015-05-01 22:42:08 +0200[diff] [blame]3296 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0 && msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3297 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3298 /* we'll need the request body, possibly after sending 100-continue */
3299 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3300 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3301 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3302 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3303 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3304 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3305 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3306 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3307 else {
3308 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3309 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3310 }
3311
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3312 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3313 return 1;
3314}
3315
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3316/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3317 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3318 */
Thierry FOURNIER7fe75e02015-03-16 12:03:44 +0100[diff] [blame]3319void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3320{
3321#ifdef IP_TOS
3322 if (from.ss_family == AF_INET)
3323 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3324#endif
3325#ifdef IPV6_TCLASS
3326 if (from.ss_family == AF_INET6) {
3327 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
3328 /* v4-mapped addresses need IP_TOS */
3329 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3330 else
3331 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3332 }
3333#endif
3334}
3335
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3336int http_transform_header_str(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3337 const char* name, unsigned int name_len,
3338 const char *str, struct my_regex *re,
3339 int action)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3340{
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3341 struct hdr_ctx ctx;
3342 char *buf = msg->chn->buf->p;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]3343 struct hdr_idx *idx = &s->txn->hdr_idx;
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3344 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3345 struct hdr_idx *idx, struct hdr_ctx *ctx);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3346 struct chunk *output = get_trash_chunk();
3347
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3348 ctx.idx = 0;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3349
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3350 /* Choose the header browsing function. */
3351 switch (action) {
3352 case HTTP_REQ_ACT_REPLACE_VAL:
3353 case HTTP_RES_ACT_REPLACE_VAL:
3354 http_find_hdr_func = http_find_header2;
3355 break;
3356 case HTTP_REQ_ACT_REPLACE_HDR:
3357 case HTTP_RES_ACT_REPLACE_HDR:
3358 http_find_hdr_func = http_find_full_header2;
3359 break;
3360 default: /* impossible */
3361 return -1;
3362 }
3363
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3364 while (http_find_hdr_func(name, name_len, buf, idx, &ctx)) {
3365 struct hdr_idx_elem *hdr = idx->v + ctx.idx;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3366 int delta;
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3367 char *val = ctx.line + ctx.val;
3368 char* val_end = val + ctx.vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3369
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3370 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch, 0))
3371 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3372
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3373 output->len = exp_replace(output->str, output->size, val, str, pmatch);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3374 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3375 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3376
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3377 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3378
3379 hdr->len += delta;
3380 http_msg_move_end(msg, delta);
Thierry FOURNIER191f9ef2015-03-16 23:23:53 +0100[diff] [blame]3381
3382 /* Adjust the length of the current value of the index. */
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3383 ctx.vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3384 }
3385
3386 return 0;
3387}
3388
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3389static int http_transform_header(struct stream* s, struct http_msg *msg,
Thierry FOURNIER5531f872015-03-16 11:15:50 +0100[diff] [blame]3390 const char* name, unsigned int name_len,
3391 struct list *fmt, struct my_regex *re,
3392 int action)
3393{
3394 struct chunk *replace = get_trash_chunk();
3395
3396 replace->len = build_logline(s, replace->str, replace->size, fmt);
3397 if (replace->len >= replace->size - 1)
3398 return -1;
3399
3400 return http_transform_header_str(s, msg, name, name_len, replace->str, re, action);
3401}
3402
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3403/* Executes the http-request rules <rules> for stream <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3404 * transaction <txn>. Returns the verdict of the first rule that prevents
3405 * further processing of the request (auth, deny, ...), and defaults to
3406 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3407 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
3408 * on txn->flags if it encounters a tarpit rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3409 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3410enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3411http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3412{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3413 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3414 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3415 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3416 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3417 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3418 const char *auth_realm;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3419
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3420 /* If "the current_rule_list" match the executed rule list, we are in
3421 * resume condition. If a resume is needed it is always in the action
3422 * and never in the ACL or converters. In this case, we initialise the
3423 * current rule, and go to the action execution point.
3424 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3425 if (s->current_rule) {
3426 rule = s->current_rule;
3427 s->current_rule = NULL;
3428 if (s->current_rule_list == rules)
3429 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3430 }
3431 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3432
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3433 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3434 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3435 continue;
3436
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3437 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3438 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3439 int ret;
3440
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3441 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]3442 ret = acl_pass(ret);
3443
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3444 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3445 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3446
3447 if (!ret) /* condition not matched */
3448 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3449 }
3450
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3451resume_execution:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3452 switch (rule->action) {
3453 case HTTP_REQ_ACT_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3454 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3455
3456 case HTTP_REQ_ACT_DENY:
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 Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3459
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3460 case HTTP_REQ_ACT_TARPIT:
3461 txn->flags |= TX_CLTARPIT;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]3462 txn->rule_deny_status = rule->deny_status;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3463 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3464
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3465 case HTTP_REQ_ACT_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3466 /* Auth might be performed on regular http-req rules as well as on stats */
3467 auth_realm = rule->arg.auth.realm;
3468 if (!auth_realm) {
3469 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3470 auth_realm = STATS_DEFAULT_REALM;
3471 else
3472 auth_realm = px->id;
3473 }
3474 /* send 401/407 depending on whether we use a proxy or not. We still
3475 * count one error, because normal browsing won't significantly
3476 * increase the counter but brute force attempts will.
3477 */
3478 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3479 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
3480 stream_int_retnclose(&s->si[0], &trash);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3481 stream_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3482 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3483
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3484 case HTTP_REQ_ACT_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3485 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3486 return HTTP_RULE_RES_BADREQ;
3487 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3488
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3489 case HTTP_REQ_ACT_SET_NICE:
3490 s->task->nice = rule->arg.nice;
3491 break;
3492
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3493 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3494 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3495 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]3496 break;
3497
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3498 case HTTP_REQ_ACT_SET_MARK:
3499#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3500 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3501 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]3502#endif
3503 break;
3504
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3505 case HTTP_REQ_ACT_SET_LOGL:
3506 s->logs.level = rule->arg.loglevel;
3507 break;
3508
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3509 case HTTP_REQ_ACT_REPLACE_HDR:
3510 case HTTP_REQ_ACT_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3511 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name,
3512 rule->arg.hdr_add.name_len,
3513 &rule->arg.hdr_add.fmt,
3514 &rule->arg.hdr_add.re, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3515 return HTTP_RULE_RES_BADREQ;
3516 break;
3517
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3518 case HTTP_REQ_ACT_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3519 ctx.idx = 0;
3520 /* remove all occurrences of the header */
3521 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3522 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3523 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3524 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3525 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3526
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3527 case HTTP_REQ_ACT_SET_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3528 case HTTP_REQ_ACT_ADD_HDR:
3529 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3530 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3531 trash.len = rule->arg.hdr_add.name_len;
3532 trash.str[trash.len++] = ':';
3533 trash.str[trash.len++] = ' ';
3534 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]3535
3536 if (rule->action == HTTP_REQ_ACT_SET_HDR) {
3537 /* remove all occurrences of the header */
3538 ctx.idx = 0;
3539 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3540 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3541 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3542 }
3543 }
3544
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3545 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3546 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3547
3548 case HTTP_REQ_ACT_DEL_ACL:
3549 case HTTP_REQ_ACT_DEL_MAP: {
3550 struct pat_ref *ref;
3551 char *key;
3552 int len;
3553
3554 /* collect reference */
3555 ref = pat_ref_lookup(rule->arg.map.ref);
3556 if (!ref)
3557 continue;
3558
3559 /* collect key */
3560 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3561 key = trash.str;
3562 key[len] = '\0';
3563
3564 /* perform update */
3565 /* returned code: 1=ok, 0=ko */
3566 pat_ref_delete(ref, key);
3567
3568 break;
3569 }
3570
3571 case HTTP_REQ_ACT_ADD_ACL: {
3572 struct pat_ref *ref;
3573 char *key;
3574 struct chunk *trash_key;
3575 int len;
3576
3577 trash_key = get_trash_chunk();
3578
3579 /* collect reference */
3580 ref = pat_ref_lookup(rule->arg.map.ref);
3581 if (!ref)
3582 continue;
3583
3584 /* collect key */
3585 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3586 key = trash_key->str;
3587 key[len] = '\0';
3588
3589 /* perform update */
3590 /* add entry only if it does not already exist */
3591 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3592 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3593
3594 break;
3595 }
3596
3597 case HTTP_REQ_ACT_SET_MAP: {
3598 struct pat_ref *ref;
3599 char *key, *value;
3600 struct chunk *trash_key, *trash_value;
3601 int len;
3602
3603 trash_key = get_trash_chunk();
3604 trash_value = get_trash_chunk();
3605
3606 /* collect reference */
3607 ref = pat_ref_lookup(rule->arg.map.ref);
3608 if (!ref)
3609 continue;
3610
3611 /* collect key */
3612 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3613 key = trash_key->str;
3614 key[len] = '\0';
3615
3616 /* collect value */
3617 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3618 value = trash_value->str;
3619 value[len] = '\0';
3620
3621 /* perform update */
3622 if (pat_ref_find_elt(ref, key) != NULL)
3623 /* update entry if it exists */
3624 pat_ref_set(ref, key, value, NULL);
3625 else
3626 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3627 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3628
3629 break;
3630 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3631
3632 case HTTP_REQ_ACT_CUSTOM_CONT:
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3633 if (!rule->action_ptr(rule, px, s)) {
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3634 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3635 return HTTP_RULE_RES_YIELD;
3636 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3637 break;
3638
3639 case HTTP_REQ_ACT_CUSTOM_STOP:
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3640 rule->action_ptr(rule, px, s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3641 return HTTP_RULE_RES_DONE;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3642
3643 case HTTP_REQ_ACT_TRK_SC0 ... HTTP_REQ_ACT_TRK_SCMAX:
3644 /* Note: only the first valid tracking parameter of each
3645 * applies.
3646 */
3647
3648 if (stkctr_entry(&s->stkctr[http_req_trk_idx(rule->action)]) == NULL) {
3649 struct stktable *t;
3650 struct stksess *ts;
3651 struct stktable_key *key;
3652 void *ptr;
3653
3654 t = rule->act_prm.trk_ctr.table.t;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3655 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]3656
3657 if (key && (ts = stktable_get_entry(t, key))) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3658 stream_track_stkctr(&s->stkctr[http_req_trk_idx(rule->action)], t, ts);
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3659
3660 /* let's count a new HTTP request as it's the first time we do it */
3661 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3662 if (ptr)
3663 stktable_data_cast(ptr, http_req_cnt)++;
3664
3665 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3666 if (ptr)
3667 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3668 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3669
3670 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3671 if (sess->fe != s->be)
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3672 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
3673 }
3674 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3675 }
3676 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3677
3678 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3679 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3680}
3681
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3682
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame^]3683/* Executes the http-response rules <rules> for stream <s> and proxy <px>. It
3684 * returns one of 5 possible statuses: HTTP_RULE_RES_CONT, HTTP_RULE_RES_STOP,
3685 * HTTP_RULE_RES_DONE, HTTP_RULE_RES_YIELD, or HTTP_RULE_RES_BADREQ. If *CONT
3686 * is returned, the process can continue the evaluation of next rule list. If
3687 * *STOP or *DONE is returned, the process must stop the evaluation. If *BADREQ
3688 * is returned, it means the operation could not be processed and a server error
3689 * must be returned. It may set the TX_SVDENY on txn->flags if it encounters a
3690 * deny rule. If *YIELD is returned, the caller must call again the function
3691 * with the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3692 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3693static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3694http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3695{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3696 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3697 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3698 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3699 struct http_res_rule *rule;
3700 struct hdr_ctx ctx;
3701
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3702 /* If "the current_rule_list" match the executed rule list, we are in
3703 * resume condition. If a resume is needed it is always in the action
3704 * and never in the ACL or converters. In this case, we initialise the
3705 * current rule, and go to the action execution point.
3706 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3707 if (s->current_rule) {
3708 rule = s->current_rule;
3709 s->current_rule = NULL;
3710 if (s->current_rule_list == rules)
3711 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3712 }
3713 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3714
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3715 list_for_each_entry(rule, rules, list) {
3716 if (rule->action >= HTTP_RES_ACT_MAX)
3717 continue;
3718
3719 /* check optional condition */
3720 if (rule->cond) {
3721 int ret;
3722
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3723 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]3724 ret = acl_pass(ret);
3725
3726 if (rule->cond->pol == ACL_COND_UNLESS)
3727 ret = !ret;
3728
3729 if (!ret) /* condition not matched */
3730 continue;
3731 }
3732
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3733resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3734 switch (rule->action) {
3735 case HTTP_RES_ACT_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3736 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3737
3738 case HTTP_RES_ACT_DENY:
3739 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3740 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3741
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3742 case HTTP_RES_ACT_SET_NICE:
3743 s->task->nice = rule->arg.nice;
3744 break;
3745
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3746 case HTTP_RES_ACT_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3747 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3748 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]3749 break;
3750
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3751 case HTTP_RES_ACT_SET_MARK:
3752#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3753 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3754 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]3755#endif
3756 break;
3757
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3758 case HTTP_RES_ACT_SET_LOGL:
3759 s->logs.level = rule->arg.loglevel;
3760 break;
3761
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3762 case HTTP_RES_ACT_REPLACE_HDR:
3763 case HTTP_RES_ACT_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3764 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
3765 rule->arg.hdr_add.name_len,
3766 &rule->arg.hdr_add.fmt,
3767 &rule->arg.hdr_add.re, rule->action))
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3768 return HTTP_RULE_RES_STOP; /* note: we should report an error here */
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3769 break;
3770
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3771 case HTTP_RES_ACT_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3772 ctx.idx = 0;
3773 /* remove all occurrences of the header */
3774 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3775 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3776 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3777 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3778 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3779
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3780 case HTTP_RES_ACT_SET_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3781 case HTTP_RES_ACT_ADD_HDR:
3782 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3783 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3784 trash.len = rule->arg.hdr_add.name_len;
3785 trash.str[trash.len++] = ':';
3786 trash.str[trash.len++] = ' ';
3787 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]3788
3789 if (rule->action == HTTP_RES_ACT_SET_HDR) {
3790 /* remove all occurrences of the header */
3791 ctx.idx = 0;
3792 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3793 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3794 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3795 }
3796 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3797 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3798 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3799
3800 case HTTP_RES_ACT_DEL_ACL:
3801 case HTTP_RES_ACT_DEL_MAP: {
3802 struct pat_ref *ref;
3803 char *key;
3804 int len;
3805
3806 /* collect reference */
3807 ref = pat_ref_lookup(rule->arg.map.ref);
3808 if (!ref)
3809 continue;
3810
3811 /* collect key */
3812 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3813 key = trash.str;
3814 key[len] = '\0';
3815
3816 /* perform update */
3817 /* returned code: 1=ok, 0=ko */
3818 pat_ref_delete(ref, key);
3819
3820 break;
3821 }
3822
3823 case HTTP_RES_ACT_ADD_ACL: {
3824 struct pat_ref *ref;
3825 char *key;
3826 struct chunk *trash_key;
3827 int len;
3828
3829 trash_key = get_trash_chunk();
3830
3831 /* collect reference */
3832 ref = pat_ref_lookup(rule->arg.map.ref);
3833 if (!ref)
3834 continue;
3835
3836 /* collect key */
3837 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3838 key = trash_key->str;
3839 key[len] = '\0';
3840
3841 /* perform update */
3842 /* check if the entry already exists */
3843 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3844 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3845
3846 break;
3847 }
3848
3849 case HTTP_RES_ACT_SET_MAP: {
3850 struct pat_ref *ref;
3851 char *key, *value;
3852 struct chunk *trash_key, *trash_value;
3853 int len;
3854
3855 trash_key = get_trash_chunk();
3856 trash_value = get_trash_chunk();
3857
3858 /* collect reference */
3859 ref = pat_ref_lookup(rule->arg.map.ref);
3860 if (!ref)
3861 continue;
3862
3863 /* collect key */
3864 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3865 key = trash_key->str;
3866 key[len] = '\0';
3867
3868 /* collect value */
3869 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3870 value = trash_value->str;
3871 value[len] = '\0';
3872
3873 /* perform update */
3874 if (pat_ref_find_elt(ref, key) != NULL)
3875 /* update entry if it exists */
3876 pat_ref_set(ref, key, value, NULL);
3877 else
3878 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3879 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3880
3881 break;
3882 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3883
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame^]3884 case HTTP_RES_ACT_REDIR:
3885 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3886 return HTTP_RULE_RES_BADREQ;
3887 return HTTP_RULE_RES_DONE;
3888
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3889 case HTTP_RES_ACT_CUSTOM_CONT:
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3890 if (!rule->action_ptr(rule, px, s)) {
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3891 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3892 return HTTP_RULE_RES_YIELD;
3893 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3894 break;
3895
3896 case HTTP_RES_ACT_CUSTOM_STOP:
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3897 rule->action_ptr(rule, px, s);
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3898 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3899 }
3900 }
3901
3902 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3903 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3904}
3905
3906
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3907/* Perform an HTTP redirect based on the information in <rule>. The function
3908 * returns non-zero on success, or zero in case of a, irrecoverable error such
3909 * as too large a request to build a valid response.
3910 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3911static 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]3912{
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3913 struct http_msg *req = &txn->req;
3914 struct http_msg *res = &txn->rsp;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3915 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3916 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3917
3918 /* build redirect message */
3919 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3920 case 308:
3921 msg_fmt = HTTP_308;
3922 break;
3923 case 307:
3924 msg_fmt = HTTP_307;
3925 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3926 case 303:
3927 msg_fmt = HTTP_303;
3928 break;
3929 case 301:
3930 msg_fmt = HTTP_301;
3931 break;
3932 case 302:
3933 default:
3934 msg_fmt = HTTP_302;
3935 break;
3936 }
3937
3938 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3939 return 0;
3940
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3941 location = trash.str + trash.len;
3942
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3943 switch(rule->type) {
3944 case REDIRECT_TYPE_SCHEME: {
3945 const char *path;
3946 const char *host;
3947 struct hdr_ctx ctx;
3948 int pathlen;
3949 int hostlen;
3950
3951 host = "";
3952 hostlen = 0;
3953 ctx.idx = 0;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3954 if (http_find_header2("Host", 4, req->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3955 host = ctx.line + ctx.val;
3956 hostlen = ctx.vlen;
3957 }
3958
3959 path = http_get_path(txn);
3960 /* build message using path */
3961 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]3962 pathlen = req->sl.rq.u_l + (req->chn->buf->p + req->sl.rq.u) - path;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3963 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3964 int qs = 0;
3965 while (qs < pathlen) {
3966 if (path[qs] == '?') {
3967 pathlen = qs;
3968 break;
3969 }
3970 qs++;
3971 }
3972 }
3973 } else {
3974 path = "/";
3975 pathlen = 1;
3976 }
3977
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3978 if (rule->rdr_str) { /* this is an old "redirect" rule */
3979 /* check if we can add scheme + "://" + host + path */
3980 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3981 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3982
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3983 /* add scheme */
3984 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3985 trash.len += rule->rdr_len;
3986 }
3987 else {
3988 /* add scheme with executing log format */
3989 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]3990
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3991 /* check if we can add scheme + "://" + host + path */
3992 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3993 return 0;
3994 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3995 /* add "://" */
3996 memcpy(trash.str + trash.len, "://", 3);
3997 trash.len += 3;
3998
3999 /* add host */
4000 memcpy(trash.str + trash.len, host, hostlen);
4001 trash.len += hostlen;
4002
4003 /* add path */
4004 memcpy(trash.str + trash.len, path, pathlen);
4005 trash.len += pathlen;
4006
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4007 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4008 if (trash.len && trash.str[trash.len - 1] != '/' &&
4009 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4010 if (trash.len > trash.size - 5)
4011 return 0;
4012 trash.str[trash.len] = '/';
4013 trash.len++;
4014 }
4015
4016 break;
4017 }
4018 case REDIRECT_TYPE_PREFIX: {
4019 const char *path;
4020 int pathlen;
4021
4022 path = http_get_path(txn);
4023 /* build message using path */
4024 if (path) {
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4025 pathlen = req->sl.rq.u_l + (req->chn->buf->p + req->sl.rq.u) - path;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4026 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4027 int qs = 0;
4028 while (qs < pathlen) {
4029 if (path[qs] == '?') {
4030 pathlen = qs;
4031 break;
4032 }
4033 qs++;
4034 }
4035 }
4036 } else {
4037 path = "/";
4038 pathlen = 1;
4039 }
4040
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4041 if (rule->rdr_str) { /* this is an old "redirect" rule */
4042 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
4043 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4044
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4045 /* add prefix. Note that if prefix == "/", we don't want to
4046 * add anything, otherwise it makes it hard for the user to
4047 * configure a self-redirection.
4048 */
4049 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
4050 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4051 trash.len += rule->rdr_len;
4052 }
4053 }
4054 else {
4055 /* add prefix with executing log format */
4056 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
4057
4058 /* Check length */
4059 if (trash.len + pathlen > trash.size - 4)
4060 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4061 }
4062
4063 /* add path */
4064 memcpy(trash.str + trash.len, path, pathlen);
4065 trash.len += pathlen;
4066
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4067 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4068 if (trash.len && trash.str[trash.len - 1] != '/' &&
4069 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4070 if (trash.len > trash.size - 5)
4071 return 0;
4072 trash.str[trash.len] = '/';
4073 trash.len++;
4074 }
4075
4076 break;
4077 }
4078 case REDIRECT_TYPE_LOCATION:
4079 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4080 if (rule->rdr_str) { /* this is an old "redirect" rule */
4081 if (trash.len + rule->rdr_len > trash.size - 4)
4082 return 0;
4083
4084 /* add location */
4085 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4086 trash.len += rule->rdr_len;
4087 }
4088 else {
4089 /* add location with executing log format */
4090 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]4091
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4092 /* Check left length */
4093 if (trash.len > trash.size - 4)
4094 return 0;
4095 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4096 break;
4097 }
4098
4099 if (rule->cookie_len) {
4100 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
4101 trash.len += 14;
4102 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
4103 trash.len += rule->cookie_len;
4104 memcpy(trash.str + trash.len, "\r\n", 2);
4105 trash.len += 2;
4106 }
4107
4108 /* add end of headers and the keep-alive/close status.
4109 * We may choose to set keep-alive if the Location begins
4110 * with a slash, because the client will come back to the
4111 * same server.
4112 */
4113 txn->status = rule->code;
4114 /* let's log the request time */
4115 s->logs.tv_request = now;
4116
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4117 if (*location == '/' &&
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4118 (req->flags & HTTP_MSGF_XFER_LEN) &&
4119 !(req->flags & HTTP_MSGF_TE_CHNK) && !req->body_len &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4120 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4121 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4122 /* keep-alive possible */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4123 if (!(req->flags & HTTP_MSGF_VER_11)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4124 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4125 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
4126 trash.len += 30;
4127 } else {
4128 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
4129 trash.len += 24;
4130 }
4131 }
4132 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
4133 trash.len += 4;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4134 bo_inject(res->chn, trash.str, trash.len);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4135 /* "eat" the request */
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4136 bi_fast_delete(req->chn->buf, req->sov);
4137 req->next -= req->sov;
4138 req->sov = 0;
4139 s->req.analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4140 s->res.analysers = AN_RES_HTTP_XFER_BODY;
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4141 req->msg_state = HTTP_MSG_CLOSED;
4142 res->msg_state = HTTP_MSG_DONE;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame^]4143 /* Trim any possible response */
4144 res->chn->buf->i = 0;
4145 res->next = res->sov = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4146 } else {
4147 /* keep-alive not possible */
4148 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4149 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
4150 trash.len += 29;
4151 } else {
4152 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
4153 trash.len += 23;
4154 }
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4155 stream_int_retnclose(&s->si[0], &trash);
Willy Tarreaub329a312015-05-22 16:27:37 +0200[diff] [blame]4156 req->chn->analysers = 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4157 }
4158
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4159 if (!(s->flags & SF_ERR_MASK))
4160 s->flags |= SF_ERR_LOCAL;
4161 if (!(s->flags & SF_FINST_MASK))
4162 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4163
4164 return 1;
4165}
4166
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4167/* This stream analyser runs all HTTP request processing which is common to
4168 * frontends and backends, which means blocking ACLs, filters, connection-close,
4169 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4170 * 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]4171 * either needs more data or wants to immediately abort the request (eg: deny,
4172 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4173 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4174int 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]4175{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4176 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4177 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4178 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4179 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4180 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4181 enum rule_result verdict;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4182
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4183 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4184 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4185 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4186 }
4187
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4188 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]4189 now_ms, __FUNCTION__,
4190 s,
4191 req,
4192 req->rex, req->wex,
4193 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4194 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4195 req->analysers);
4196
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4197 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4198 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4199
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4200 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4201 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4202 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4203
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4204 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4205 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
4206 goto return_prx_yield;
4207
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4208 case HTTP_RULE_RES_CONT:
4209 case HTTP_RULE_RES_STOP: /* nothing to do */
4210 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4211
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4212 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4213 if (txn->flags & TX_CLTARPIT)
4214 goto tarpit;
4215 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4216
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4217 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4218 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4219
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4220 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4221 goto done;
4222
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4223 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4224 goto return_bad_req;
4225 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4226 }
4227
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4228 /* OK at this stage, we know that the request was accepted according to
4229 * the http-request rules, we can check for the stats. Note that the
4230 * URI is detected *before* the req* rules in order not to be affected
4231 * by a possible reqrep, while they are processed *after* so that a
4232 * reqdeny can still block them. This clearly needs to change in 1.6!
4233 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4234 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4235 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4236 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4237 txn->status = 500;
4238 s->logs.tv_request = now;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4239 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4240
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4241 if (!(s->flags & SF_ERR_MASK))
4242 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4243 goto return_prx_cond;
4244 }
4245
4246 /* parse the whole stats request and extract the relevant information */
4247 http_handle_stats(s, req);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4248 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4249 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4250
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4251 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4252 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4253
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4254 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4255 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4256 }
4257
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4258 /* evaluate the req* rules except reqadd */
4259 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4260 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4261 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4262
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4263 if (txn->flags & TX_CLDENY)
4264 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4265
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4266 if (txn->flags & TX_CLTARPIT)
4267 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4268 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4269
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4270 /* add request headers from the rule sets in the same order */
4271 list_for_each_entry(wl, &px->req_add, list) {
4272 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4273 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]4274 ret = acl_pass(ret);
4275 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4276 ret = !ret;
4277 if (!ret)
4278 continue;
4279 }
4280
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4281 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4282 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4283 }
4284
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4285
4286 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4287 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4288 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4289 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
4290 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4291
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4292 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
4293 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
4294 if (!(s->flags & SF_FINST_MASK))
4295 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4296
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4297 /* we may want to compress the stats page */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4298 if (sess->fe->comp || s->be->comp)
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4299 select_compression_request_header(s, req->buf);
4300
4301 /* 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]4302 req->analysers = (req->analysers & AN_REQ_HTTP_BODY) | AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4303 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4304 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4305
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4306 /* check whether we have some ACLs set to redirect this request */
4307 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4308 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4309 int ret;
4310
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4311 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]4312 ret = acl_pass(ret);
4313 if (rule->cond->pol == ACL_COND_UNLESS)
4314 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4315 if (!ret)
4316 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4317 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4318 if (!http_apply_redirect_rule(rule, s, txn))
4319 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4320 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4321 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4322
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4323 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4324 * If this happens, then the data will not come immediately, so we must
4325 * send all what we have without waiting. Note that due to the small gain
4326 * 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]4327 * 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]4328 * itself once used.
4329 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4330 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4331
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4332 done: /* done with this analyser, continue with next ones that the calling
4333 * points will have set, if any.
4334 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4335 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4336 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4337 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4338 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4339
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4340 tarpit:
4341 /* When a connection is tarpitted, we use the tarpit timeout,
4342 * which may be the same as the connect timeout if unspecified.
4343 * If unset, then set it to zero because we really want it to
4344 * eventually expire. We build the tarpit as an analyser.
4345 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4346 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4347
4348 /* wipe the request out so that we can drop the connection early
4349 * if the client closes first.
4350 */
4351 channel_dont_connect(req);
4352 req->analysers = 0; /* remove switching rules etc... */
4353 req->analysers |= AN_REQ_HTTP_TARPIT;
4354 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4355 if (!req->analyse_exp)
4356 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4357 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4358 sess->fe->fe_counters.denied_req++;
4359 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4360 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4361 if (sess->listener->counters)
4362 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4363 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4364
4365 deny: /* this request was blocked (denied) */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4366 txn->flags |= TX_CLDENY;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]4367 txn->status = http_err_codes[txn->rule_deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4368 s->logs.tv_request = now;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]4369 stream_int_retnclose(&s->si[0], http_error_message(s, txn->rule_deny_status));
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4370 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4371 sess->fe->fe_counters.denied_req++;
4372 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4373 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4374 if (sess->listener->counters)
4375 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4376 goto return_prx_cond;
4377
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4378 return_bad_req:
4379 /* We centralize bad requests processing here */
4380 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4381 /* we detected a parsing error. We want to archive this request
4382 * in the dedicated proxy area for later troubleshooting.
4383 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4384 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]4385 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4386
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4387 txn->req.msg_state = HTTP_MSG_ERROR;
4388 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4389 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4390
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4391 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4392 if (sess->listener->counters)
4393 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4394
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4395 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4396 if (!(s->flags & SF_ERR_MASK))
4397 s->flags |= SF_ERR_PRXCOND;
4398 if (!(s->flags & SF_FINST_MASK))
4399 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4400
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4401 req->analysers = 0;
4402 req->analyse_exp = TICK_ETERNITY;
4403 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4404
4405 return_prx_yield:
4406 channel_dont_connect(req);
4407 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4408}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4409
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4410/* This function performs all the processing enabled for the current request.
4411 * It returns 1 if the processing can continue on next analysers, or zero if it
4412 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4413 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4414 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4415int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4416{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4417 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4418 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4419 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]4420 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4421
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4422 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4423 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4424 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4425 return 0;
4426 }
4427
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4428 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]4429 now_ms, __FUNCTION__,
4430 s,
4431 req,
4432 req->rex, req->wex,
4433 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4434 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4435 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4436
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4437 if (sess->fe->comp || s->be->comp)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]4438 select_compression_request_header(s, req->buf);
4439
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4440 /*
4441 * Right now, we know that we have processed the entire headers
4442 * and that unwanted requests have been filtered out. We can do
4443 * whatever we want with the remaining request. Also, now we
4444 * may have separate values for ->fe, ->be.
4445 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4446
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4447 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4448 * If HTTP PROXY is set we simply get remote server address parsing
4449 * incoming request. Note that this requires that a connection is
4450 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4451 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4452 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4453 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4454 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4455
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4456 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4457 if (unlikely((conn = si_alloc_conn(&s->si[1], 0)) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4458 txn->req.msg_state = HTTP_MSG_ERROR;
4459 txn->status = 500;
4460 req->analysers = 0;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4461 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4462
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4463 if (!(s->flags & SF_ERR_MASK))
4464 s->flags |= SF_ERR_RESOURCE;
4465 if (!(s->flags & SF_FINST_MASK))
4466 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4467
4468 return 0;
4469 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4470
4471 path = http_get_path(txn);
4472 url2sa(req->buf->p + msg->sl.rq.u,
4473 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4474 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4475 /* if the path was found, we have to remove everything between
4476 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4477 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4478 * u_l characters by a single "/".
4479 */
4480 if (path) {
4481 char *cur_ptr = req->buf->p;
4482 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4483 int delta;
4484
4485 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4486 http_msg_move_end(&txn->req, delta);
4487 cur_end += delta;
4488 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4489 goto return_bad_req;
4490 }
4491 else {
4492 char *cur_ptr = req->buf->p;
4493 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4494 int delta;
4495
4496 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4497 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4498 http_msg_move_end(&txn->req, delta);
4499 cur_end += delta;
4500 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4501 goto return_bad_req;
4502 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4503 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4504
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4505 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4506 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4507 * Note that doing so might move headers in the request, but
4508 * the fields will stay coherent and the URI will not move.
4509 * This should only be performed in the backend.
4510 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4511 if ((s->be->cookie_name || s->be->appsession_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4512 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
4513 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4514
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4515 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4516 * 8: the appsession cookie was looked up very early in 1.2,
4517 * so let's do the same now.
4518 */
4519
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4520 /* It needs to look into the URI unless persistence must be ignored */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4521 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4522 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]4523 }
4524
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4525 /* add unique-id if "header-unique-id" is specified */
4526
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4527 if (!LIST_ISEMPTY(&sess->fe->format_unique_id)) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4528 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4529 goto return_bad_req;
4530 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4531 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4532 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4533
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4534 if (sess->fe->header_unique_id && s->unique_id) {
4535 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4536 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4537 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4538 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]4539 goto return_bad_req;
4540 }
4541
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4542 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4543 * 9: add X-Forwarded-For if either the frontend or the backend
4544 * asks for it.
4545 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4546 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4547 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4548 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
4549 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
4550 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]4551 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4552 /* The header is set to be added only if none is present
4553 * and we found it, so don't do anything.
4554 */
4555 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4556 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4557 /* Add an X-Forwarded-For header unless the source IP is
4558 * in the 'except' network range.
4559 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4560 if ((!sess->fe->except_mask.s_addr ||
4561 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
4562 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4563 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4564 (((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]4565 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4566 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4567 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4568 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4569
4570 /* Note: we rely on the backend to get the header name to be used for
4571 * x-forwarded-for, because the header is really meant for the backends.
4572 * However, if the backend did not specify any option, we have to rely
4573 * on the frontend's header name.
4574 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4575 if (s->be->fwdfor_hdr_len) {
4576 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4577 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4578 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4579 len = sess->fe->fwdfor_hdr_len;
4580 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4581 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4582 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]4583
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4584 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]4585 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4586 }
4587 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4588 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4589 /* FIXME: for the sake of completeness, we should also support
4590 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4591 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4592 int len;
4593 char pn[INET6_ADDRSTRLEN];
4594 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4595 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4596 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4597
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4598 /* Note: we rely on the backend to get the header name to be used for
4599 * x-forwarded-for, because the header is really meant for the backends.
4600 * However, if the backend did not specify any option, we have to rely
4601 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4602 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4603 if (s->be->fwdfor_hdr_len) {
4604 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4605 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4606 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4607 len = sess->fe->fwdfor_hdr_len;
4608 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4609 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4610 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4611
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4612 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]4613 goto return_bad_req;
4614 }
4615 }
4616
4617 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4618 * 10: add X-Original-To if either the frontend or the backend
4619 * asks for it.
4620 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4621 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4622
4623 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4624 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4625 /* Add an X-Original-To header unless the destination IP is
4626 * in the 'except' network range.
4627 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4628 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4629
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4630 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4631 ((!sess->fe->except_mask_to.s_addr ||
4632 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
4633 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4634 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4635 (((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]4636 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4637 int len;
4638 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4639 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4640
4641 /* Note: we rely on the backend to get the header name to be used for
4642 * x-original-to, because the header is really meant for the backends.
4643 * However, if the backend did not specify any option, we have to rely
4644 * on the frontend's header name.
4645 */
4646 if (s->be->orgto_hdr_len) {
4647 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4648 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4649 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4650 len = sess->fe->orgto_hdr_len;
4651 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4652 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4653 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]4654
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4655 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]4656 goto return_bad_req;
4657 }
4658 }
4659 }
4660
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4661 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4662 * If an "Upgrade" token is found, the header is left untouched in order not to have
4663 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4664 * "Upgrade" is present in the Connection header.
4665 */
4666 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4667 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4668 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4669 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4670 unsigned int want_flags = 0;
4671
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4672 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4673 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4674 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4675 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4676 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4677 want_flags |= TX_CON_CLO_SET;
4678 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4679 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4680 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4681 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4682 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4683 want_flags |= TX_CON_KAL_SET;
4684 }
4685
4686 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4687 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4688 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4689
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4690
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4691 /* If we have no server assigned yet and we're balancing on url_param
4692 * with a POST request, we may be interested in checking the body for
4693 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4694 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4695 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4696 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4697 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4698 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4699 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4700 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4701
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4702 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4703 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4704#ifdef TCP_QUICKACK
4705 /* We expect some data from the client. Unless we know for sure
4706 * we already have a full request, we have to re-enable quick-ack
4707 * in case we previously disabled it, otherwise we might cause
4708 * the client to delay further data.
4709 */
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4710 if ((sess->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4711 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4712 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4713 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4714 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4715#endif
4716 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4717
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4718 /*************************************************************
4719 * OK, that's finished for the headers. We have done what we *
4720 * could. Let's switch to the DATA state. *
4721 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4722 req->analyse_exp = TICK_ETERNITY;
4723 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4724
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4725 /* if the server closes the connection, we want to immediately react
4726 * and close the socket to save packets and syscalls.
4727 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4728 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4729 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4730
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4731 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4732 /* OK let's go on with the BODY now */
4733 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4734
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4735 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4736 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4737 /* we detected a parsing error. We want to archive this request
4738 * in the dedicated proxy area for later troubleshooting.
4739 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4740 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]4741 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4742
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4743 txn->req.msg_state = HTTP_MSG_ERROR;
4744 txn->status = 400;
4745 req->analysers = 0;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4746 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4747
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4748 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4749 if (sess->listener->counters)
4750 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4751
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4752 if (!(s->flags & SF_ERR_MASK))
4753 s->flags |= SF_ERR_PRXCOND;
4754 if (!(s->flags & SF_FINST_MASK))
4755 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4756 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4757}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4758
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4759/* This function is an analyser which processes the HTTP tarpit. It always
4760 * returns zero, at the beginning because it prevents any other processing
4761 * from occurring, and at the end because it terminates the request.
4762 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4763int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4764{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4765 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4766
4767 /* This connection is being tarpitted. The CLIENT side has
4768 * already set the connect expiration date to the right
4769 * timeout. We just have to check that the client is still
4770 * there and that the timeout has not expired.
4771 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4772 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4773 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4774 !tick_is_expired(req->analyse_exp, now_ms))
4775 return 0;
4776
4777 /* We will set the queue timer to the time spent, just for
4778 * logging purposes. We fake a 500 server error, so that the
4779 * attacker will not suspect his connection has been tarpitted.
4780 * It will not cause trouble to the logs because we can exclude
4781 * the tarpitted connections by filtering on the 'PT' status flags.
4782 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4783 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4784
4785 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4786 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4787 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4788
4789 req->analysers = 0;
4790 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4791
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4792 if (!(s->flags & SF_ERR_MASK))
4793 s->flags |= SF_ERR_PRXCOND;
4794 if (!(s->flags & SF_FINST_MASK))
4795 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4796 return 0;
4797}
4798
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4799/* This function is an analyser which waits for the HTTP request body. It waits
4800 * for either the buffer to be full, or the full advertised contents to have
4801 * reached the buffer. It must only be called after the standard HTTP request
4802 * processing has occurred, because it expects the request to be parsed and will
4803 * look for the Expect header. It may send a 100-Continue interim response. It
4804 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4805 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4806 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4807 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4808int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4809{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4810 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4811 struct http_txn *txn = s->txn;
4812 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4813
4814 /* We have to parse the HTTP request body to find any required data.
4815 * "balance url_param check_post" should have been the only way to get
4816 * into this. We were brought here after HTTP header analysis, so all
4817 * related structures are ready.
4818 */
4819
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4820 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4821 /* This is the first call */
4822 if (msg->msg_state < HTTP_MSG_BODY)
4823 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4824
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4825 if (msg->msg_state < HTTP_MSG_100_SENT) {
4826 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4827 * send an HTTP/1.1 100 Continue intermediate response.
4828 */
4829 if (msg->flags & HTTP_MSGF_VER_11) {
4830 struct hdr_ctx ctx;
4831 ctx.idx = 0;
4832 /* Expect is allowed in 1.1, look for it */
4833 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4834 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4835 bo_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4836 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4837 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4838 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4839 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4840
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4841 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4842 * req->buf->p still points to the beginning of the message. We
4843 * must save the body in msg->next because it survives buffer
4844 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4845 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4846 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4847
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4848 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4849 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4850 else
4851 msg->msg_state = HTTP_MSG_DATA;
4852 }
4853
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4854 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4855 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4856 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4857 goto missing_data;
4858
4859 /* OK we have everything we need now */
4860 goto http_end;
4861 }
4862
4863 /* OK here we're parsing a chunked-encoded message */
4864
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4865 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4866 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4867 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4868 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4869 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4870 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4871
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4872 if (!ret)
4873 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4874 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4875 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4876 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4877 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4878 }
4879
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4880 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4881 * We have the first data byte is in msg->sov + msg->sol. We're waiting
4882 * for at least a whole chunk or the whole content length bytes after
4883 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4884 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4885 if (msg->msg_state == HTTP_MSG_TRAILERS)
4886 goto http_end;
4887
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4888 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4889 goto http_end;
4890
4891 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4892 /* we get here if we need to wait for more data. If the buffer is full,
4893 * we have the maximum we can expect.
4894 */
4895 if (buffer_full(req->buf, global.tune.maxrewrite))
4896 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4897
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4898 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4899 txn->status = 408;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4900 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4901
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4902 if (!(s->flags & SF_ERR_MASK))
4903 s->flags |= SF_ERR_CLITO;
4904 if (!(s->flags & SF_FINST_MASK))
4905 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4906 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4907 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4908
4909 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4910 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4911 /* Not enough data. We'll re-use the http-request
4912 * timeout here. Ideally, we should set the timeout
4913 * relative to the accept() date. We just set the
4914 * request timeout once at the beginning of the
4915 * request.
4916 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4917 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4918 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4919 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4920 return 0;
4921 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4922
4923 http_end:
4924 /* The situation will not evolve, so let's give up on the analysis. */
4925 s->logs.tv_request = now; /* update the request timer to reflect full request */
4926 req->analysers &= ~an_bit;
4927 req->analyse_exp = TICK_ETERNITY;
4928 return 1;
4929
4930 return_bad_req: /* let's centralize all bad requests */
4931 txn->req.msg_state = HTTP_MSG_ERROR;
4932 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4933 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4934
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4935 if (!(s->flags & SF_ERR_MASK))
4936 s->flags |= SF_ERR_PRXCOND;
4937 if (!(s->flags & SF_FINST_MASK))
4938 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4939
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4940 return_err_msg:
4941 req->analysers = 0;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4942 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4943 if (sess->listener->counters)
4944 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4945 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4946}
4947
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4948/* send a server's name with an outgoing request over an established connection.
4949 * Note: this function is designed to be called once the request has been scheduled
4950 * for being forwarded. This is the reason why it rewinds the buffer before
4951 * proceeding.
4952 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4953int 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]4954
4955 struct hdr_ctx ctx;
4956
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4957 char *hdr_name = be->server_id_hdr_name;
4958 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4959 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4960 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4961 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4962
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4963 ctx.idx = 0;
4964
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4965 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4966 if (old_o) {
4967 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4968 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4969 txn->req.next += old_o;
4970 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4971 }
4972
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4973 old_i = chn->buf->i;
4974 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]4975 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4976 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4977 }
4978
4979 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4980 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4981 memcpy(hdr_val, hdr_name, hdr_name_len);
4982 hdr_val += hdr_name_len;
4983 *hdr_val++ = ':';
4984 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4985 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4986 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]4987
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4988 if (old_o) {
4989 /* If this was a forwarded request, we must readjust the amount of
4990 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4991 * variations. Note that the current state is >= HTTP_MSG_BODY,
4992 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4993 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4994 old_o += chn->buf->i - old_i;
4995 b_adv(chn->buf, old_o);
4996 txn->req.next -= old_o;
4997 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4998 }
4999
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]5000 return 0;
5001}
5002
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5003/* Terminate current transaction and prepare a new one. This is very tricky
5004 * right now but it works.
5005 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5006void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5007{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5008 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]5009 struct proxy *fe = strm_fe(s);
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5010
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5011 /* FIXME: We need a more portable way of releasing a backend's and a
5012 * server's connections. We need a safer way to reinitialize buffer
5013 * flags. We also need a more accurate method for computing per-request
5014 * data.
5015 */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5016
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5017 /* unless we're doing keep-alive, we want to quickly close the connection
5018 * to the server.
5019 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5020 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5021 !si_conn_ready(&s->si[1])) {
5022 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
5023 si_shutr(&s->si[1]);
5024 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5025 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5026
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5027 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5028 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]5029 if (unlikely(s->srv_conn))
5030 sess_change_server(s, NULL);
5031 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5032
5033 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5034 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5035
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5036 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5037 int n;
5038
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5039 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5040 if (n < 1 || n > 5)
5041 n = 0;
5042
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5043 if (fe->mode == PR_MODE_HTTP) {
5044 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5045 if (s->comp_algo && (s->flags & SF_COMP_READY))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5046 fe->fe_counters.p.http.comp_rsp++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5047 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5048 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5049 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5050 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5051 s->be->be_counters.p.http.cum_req++;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5052 if (s->comp_algo && (s->flags & SF_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5053 s->be->be_counters.p.http.comp_rsp++;
5054 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5055 }
5056
5057 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5058 s->logs.bytes_in -= s->req.buf->i;
5059 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5060
5061 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5062 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5063 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5064 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5065 s->do_log(s);
5066 }
5067
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]5068 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5069 stream_stop_content_counters(s);
5070 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]5071
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5072 s->logs.accept_date = date; /* user-visible date for logging */
5073 s->logs.tv_accept = now; /* corrected date for internal use */
5074 tv_zero(&s->logs.tv_request);
5075 s->logs.t_queue = -1;
5076 s->logs.t_connect = -1;
5077 s->logs.t_data = -1;
5078 s->logs.t_close = 0;
5079 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
5080 s->logs.srv_queue_size = 0; /* we will get this number soon */
5081
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5082 s->logs.bytes_in = s->req.total = s->req.buf->i;
5083 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5084
5085 if (s->pend_pos)
5086 pendconn_free(s->pend_pos);
5087
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5088 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5089 if (s->flags & SF_CURR_SESS) {
5090 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5091 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5092 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5093 if (may_dequeue_tasks(objt_server(s->target), s->be))
5094 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5095 }
5096
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5097 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5098
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5099 /* only release our endpoint if we don't intend to reuse the
5100 * connection.
5101 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5102 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5103 !si_conn_ready(&s->si[1])) {
5104 si_release_endpoint(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5105 }
5106
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5107 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
5108 s->si[1].err_type = SI_ET_NONE;
5109 s->si[1].conn_retries = 0; /* used for logging too */
5110 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5111 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]5112 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);
5113 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]5114 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5115 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5116 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5117
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5118 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5119 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5120 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5121
5122 if (prev_status == 401 || prev_status == 407) {
5123 /* In HTTP keep-alive mode, if we receive a 401, we still have
5124 * a chance of being able to send the visitor again to the same
5125 * server over the same connection. This is required by some
5126 * broken protocols such as NTLM, and anyway whenever there is
5127 * an opportunity for sending the challenge to the proper place,
5128 * it's better to do it (at least it helps with debugging).
5129 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5130 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5131 }
5132
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5133 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5134 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5135
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5136 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5137 s->req.flags |= CF_NEVER_WAIT;
5138 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5139 }
5140
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5141 /* if the request buffer is not empty, it means we're
5142 * about to process another request, so send pending
5143 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5144 * Just don't do this if the buffer is close to be full,
5145 * because the request will wait for it to flush a little
5146 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5147 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5148 if (s->req.buf->i) {
5149 if (s->res.buf->o &&
5150 !buffer_full(s->res.buf, global.tune.maxrewrite) &&
5151 bi_end(s->res.buf) <= s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)
5152 s->res.flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5153 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5154
5155 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5156 channel_auto_read(&s->req);
5157 channel_auto_close(&s->req);
5158 channel_auto_read(&s->res);
5159 channel_auto_close(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5160
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5161 /* we're in keep-alive with an idle connection, monitor it */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5162 si_idle_conn(&s->si[1]);
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5163
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]5164 s->req.analysers = strm_li(s)->analysers;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5165 s->res.analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5166}
5167
5168
5169/* This function updates the request state machine according to the response
5170 * state machine and buffer flags. It returns 1 if it changes anything (flag
5171 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5172 * it is only used to find when a request/response couple is complete. Both
5173 * this function and its equivalent should loop until both return zero. It
5174 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5175 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5176int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5177{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5178 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5179 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5180 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5181 unsigned int old_state = txn->req.msg_state;
5182
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5183 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5184 return 0;
5185
5186 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5187 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5188 * We can shut the read side unless we want to abort_on_close,
5189 * or we have a POST request. The issue with POST requests is
5190 * that some browsers still send a CRLF after the request, and
5191 * this CRLF must be read so that it does not remain in the kernel
5192 * buffers, otherwise a close could cause an RST on some systems
5193 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5194 * Note that if we're using keep-alive on the client side, we'd
5195 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5196 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5197 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5198 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5199 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5200 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5201 !(s->be->options & PR_O_ABRT_CLOSE) &&
5202 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5203 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5204
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5205 /* if the server closes the connection, we want to immediately react
5206 * and close the socket to save packets and syscalls.
5207 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5208 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5209
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5210 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5211 goto wait_other_side;
5212
5213 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5214 /* The server has not finished to respond, so we
5215 * don't want to move in order not to upset it.
5216 */
5217 goto wait_other_side;
5218 }
5219
5220 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5221 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5222 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5223 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5224 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5225 goto wait_other_side;
5226 }
5227
5228 /* When we get here, it means that both the request and the
5229 * response have finished receiving. Depending on the connection
5230 * mode, we'll have to wait for the last bytes to leave in either
5231 * direction, and sometimes for a close to be effective.
5232 */
5233
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5234 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5235 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5236 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5237 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5238 }
5239 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5240 /* Option forceclose is set, or either side wants to close,
5241 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5242 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5243 * once both states are CLOSED.
5244 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5245 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5246 channel_shutr_now(chn);
5247 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5248 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5249 }
5250 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5251 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5252 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5253 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5254 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5255 channel_auto_read(chn);
5256 txn->req.msg_state = HTTP_MSG_TUNNEL;
5257 chn->flags |= CF_NEVER_WAIT;
5258 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5259 }
5260
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5261 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5262 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5263 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5264
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5265 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5266 txn->req.msg_state = HTTP_MSG_CLOSING;
5267 goto http_msg_closing;
5268 }
5269 else {
5270 txn->req.msg_state = HTTP_MSG_CLOSED;
5271 goto http_msg_closed;
5272 }
5273 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5274 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5275 }
5276
5277 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5278 http_msg_closing:
5279 /* nothing else to forward, just waiting for the output buffer
5280 * to be empty and for the shutw_now to take effect.
5281 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5282 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5283 txn->req.msg_state = HTTP_MSG_CLOSED;
5284 goto http_msg_closed;
5285 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5286 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5287 txn->req.msg_state = HTTP_MSG_ERROR;
5288 goto wait_other_side;
5289 }
5290 }
5291
5292 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5293 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5294 /* see above in MSG_DONE why we only do this in these states */
5295 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5296 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5297 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5298 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5299 goto wait_other_side;
5300 }
5301
5302 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5303 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5304}
5305
5306
5307/* This function updates the response state machine according to the request
5308 * state machine and buffer flags. It returns 1 if it changes anything (flag
5309 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5310 * it is only used to find when a request/response couple is complete. Both
5311 * this function and its equivalent should loop until both return zero. It
5312 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5313 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5314int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5315{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5316 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5317 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5318 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5319 unsigned int old_state = txn->rsp.msg_state;
5320
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5321 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5322 return 0;
5323
5324 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5325 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5326 * still monitor the server connection for a possible close
5327 * while the request is being uploaded, so we don't disable
5328 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5329 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5330 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5331
5332 if (txn->req.msg_state == HTTP_MSG_ERROR)
5333 goto wait_other_side;
5334
5335 if (txn->req.msg_state < HTTP_MSG_DONE) {
5336 /* The client seems to still be sending data, probably
5337 * because we got an error response during an upload.
5338 * We have the choice of either breaking the connection
5339 * or letting it pass through. Let's do the later.
5340 */
5341 goto wait_other_side;
5342 }
5343
5344 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5345 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5346 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5347 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5348 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5349 goto wait_other_side;
5350 }
5351
5352 /* When we get here, it means that both the request and the
5353 * response have finished receiving. Depending on the connection
5354 * mode, we'll have to wait for the last bytes to leave in either
5355 * direction, and sometimes for a close to be effective.
5356 */
5357
5358 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5359 /* Server-close mode : shut read and wait for the request
5360 * side to close its output buffer. The caller will detect
5361 * when we're in DONE and the other is in CLOSED and will
5362 * catch that for the final cleanup.
5363 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5364 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5365 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5366 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5367 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5368 /* Option forceclose is set, or either side wants to close,
5369 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5370 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5371 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5372 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5373 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5374 channel_shutr_now(chn);
5375 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5376 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5377 }
5378 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5379 /* The last possible modes are keep-alive and tunnel. Tunnel will
5380 * need to forward remaining data. Keep-alive will need to monitor
5381 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5382 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5383 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5384 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5385 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5386 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5387 }
5388
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5389 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5390 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5391 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5392 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5393 goto http_msg_closing;
5394 }
5395 else {
5396 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5397 goto http_msg_closed;
5398 }
5399 }
5400 goto wait_other_side;
5401 }
5402
5403 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5404 http_msg_closing:
5405 /* nothing else to forward, just waiting for the output buffer
5406 * to be empty and for the shutw_now to take effect.
5407 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5408 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5409 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5410 goto http_msg_closed;
5411 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5412 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5413 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5414 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5415 if (objt_server(s->target))
5416 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5417 goto wait_other_side;
5418 }
5419 }
5420
5421 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5422 http_msg_closed:
5423 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5424 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5425 channel_auto_close(chn);
5426 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5427 goto wait_other_side;
5428 }
5429
5430 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5431 /* We force the response to leave immediately if we're waiting for the
5432 * other side, since there is no pending shutdown to push it out.
5433 */
5434 if (!channel_is_empty(chn))
5435 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5436 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5437}
5438
5439
5440/* Resync the request and response state machines. Return 1 if either state
5441 * changes.
5442 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5443int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5444{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5445 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5446 int old_req_state = txn->req.msg_state;
5447 int old_res_state = txn->rsp.msg_state;
5448
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5449 http_sync_req_state(s);
5450 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5451 if (!http_sync_res_state(s))
5452 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5453 if (!http_sync_req_state(s))
5454 break;
5455 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5456
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5457 /* OK, both state machines agree on a compatible state.
5458 * There are a few cases we're interested in :
5459 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5460 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5461 * directions, so let's simply disable both analysers.
5462 * - HTTP_MSG_CLOSED on the response only means we must abort the
5463 * request.
5464 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5465 * with server-close mode means we've completed one request and we
5466 * must re-initialize the server connection.
5467 */
5468
5469 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5470 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5471 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5472 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5473 s->req.analysers = 0;
5474 channel_auto_close(&s->req);
5475 channel_auto_read(&s->req);
5476 s->res.analysers = 0;
5477 channel_auto_close(&s->res);
5478 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5479 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5480 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5481 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5482 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5483 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5484 s->res.analysers = 0;
5485 channel_auto_close(&s->res);
5486 channel_auto_read(&s->res);
5487 s->req.analysers = 0;
5488 channel_abort(&s->req);
5489 channel_auto_close(&s->req);
5490 channel_auto_read(&s->req);
5491 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5492 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5493 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5494 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5495 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5496 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5497 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5498 /* server-close/keep-alive: terminate this transaction,
5499 * possibly killing the server connection and reinitialize
5500 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5501 */
5502 http_end_txn_clean_session(s);
5503 }
5504
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5505 return txn->req.msg_state != old_req_state ||
5506 txn->rsp.msg_state != old_res_state;
5507}
5508
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5509/* This function is an analyser which forwards request body (including chunk
5510 * sizes if any). It is called as soon as we must forward, even if we forward
5511 * zero byte. The only situation where it must not be called is when we're in
5512 * tunnel mode and we want to forward till the close. It's used both to forward
5513 * remaining data and to resync after end of body. It expects the msg_state to
5514 * 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]5515 * 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]5516 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5517 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5518 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5519int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5520{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5521 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5522 struct http_txn *txn = s->txn;
5523 struct http_msg *msg = &s->txn->req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5524
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5525 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5526 return 0;
5527
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5528 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]5529 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5530 /* Output closed while we were sending data. We must abort and
5531 * wake the other side up.
5532 */
5533 msg->msg_state = HTTP_MSG_ERROR;
5534 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5535 return 1;
5536 }
5537
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5538 /* Note that we don't have to send 100-continue back because we don't
5539 * need the data to complete our job, and it's up to the server to
5540 * decide whether to return 100, 417 or anything else in return of
5541 * an "Expect: 100-continue" header.
5542 */
5543
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5544 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5545 /* we have msg->sov which points to the first byte of message
5546 * body, and req->buf.p still points to the beginning of the
5547 * message. We forward the headers now, as we don't need them
5548 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5549 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5550 b_adv(req->buf, msg->sov);
5551 msg->next -= msg->sov;
5552 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5553
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5554 /* The previous analysers guarantee that the state is somewhere
5555 * between MSG_BODY and the first MSG_DATA. So msg->sol and
5556 * msg->next are always correct.
5557 */
5558 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
5559 if (msg->flags & HTTP_MSGF_TE_CHNK)
5560 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5561 else
5562 msg->msg_state = HTTP_MSG_DATA;
5563 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5564 }
5565
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5566 /* Some post-connect processing might want us to refrain from starting to
5567 * forward data. Currently, the only reason for this is "balance url_param"
5568 * whichs need to parse/process the request after we've enabled forwarding.
5569 */
5570 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5571 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5572 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5573 req->flags |= CF_WAKE_CONNECT;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5574 goto missing_data;
5575 }
5576 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5577 }
5578
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5579 /* in most states, we should abort in case of early close */
5580 channel_auto_close(req);
5581
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5582 if (req->to_forward) {
5583 /* We can't process the buffer's contents yet */
5584 req->flags |= CF_WAKE_WRITE;
5585 goto missing_data;
5586 }
5587
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5588 while (1) {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5589 if (msg->msg_state == HTTP_MSG_DATA) {
5590 /* must still forward */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5591 /* we may have some pending data starting at req->buf->p */
5592 if (msg->chunk_len > req->buf->i - msg->next) {
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5593 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5594 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5595 }
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5596 msg->next += msg->chunk_len;
5597 msg->chunk_len = 0;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5598
5599 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5600 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5601 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5602 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5603 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5604 }
5605 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5606 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5607 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5608 * TRAILERS state.
5609 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5610 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5611
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5612 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5613 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5614 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5615 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5616 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5617 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]5618 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5619 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5620 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5621 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5622 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5623 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5624 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5625
5626 if (ret == 0)
5627 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5628 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5629 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5630 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5631 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]5632 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5633 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5634 /* we're in MSG_CHUNK_SIZE now */
5635 }
5636 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5637 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5638
5639 if (ret == 0)
5640 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5641 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5642 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5643 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5644 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]5645 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5646 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5647 /* we're in HTTP_MSG_DONE now */
5648 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5649 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5650 int old_state = msg->msg_state;
5651
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5652 /* other states, DONE...TUNNEL */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5653
5654 /* we may have some pending data starting at req->buf->p
5655 * such as last chunk of data or trailers.
5656 */
5657 b_adv(req->buf, msg->next);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5658 if (unlikely(!(s->req.flags & CF_WROTE_DATA)))
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5659 msg->sov -= msg->next;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5660 msg->next = 0;
5661
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5662 /* we don't want to forward closes on DONE except in
5663 * tunnel mode.
5664 */
5665 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5666 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5667 if (http_resync_states(s)) {
5668 /* some state changes occurred, maybe the analyser
5669 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5670 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5671 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5672 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5673 /* request errors are most likely due to
5674 * the server aborting the transfer.
5675 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5676 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5677 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5678 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5679 http_capture_bad_message(&sess->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5680 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5681 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5682 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5683 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5684
5685 /* If "option abortonclose" is set on the backend, we
5686 * want to monitor the client's connection and forward
5687 * any shutdown notification to the server, which will
5688 * decide whether to close or to go on processing the
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5689 * request. We only do that in tunnel mode, and not in
5690 * other modes since it can be abused to exhaust source
5691 * ports.
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5692 */
5693 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5694 channel_auto_read(req);
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5695 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
5696 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
5697 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5698 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5699 }
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5700 else if (s->txn->meth == HTTP_METH_POST) {
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5701 /* POST requests may require to read extra CRLF
5702 * sent by broken browsers and which could cause
5703 * an RST to be sent upon close on some systems
5704 * (eg: Linux).
5705 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5706 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5707 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5708
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5709 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5710 }
5711 }
5712
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5713 missing_data:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5714 /* we may have some pending data starting at req->buf->p */
5715 b_adv(req->buf, msg->next);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5716 if (unlikely(!(s->req.flags & CF_WROTE_DATA)))
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5717 msg->sov -= msg->next + MIN(msg->chunk_len, req->buf->i);
5718
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5719 msg->next = 0;
5720 msg->chunk_len -= channel_forward(req, msg->chunk_len);
5721
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5722 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5723 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5724 if (!(s->flags & SF_ERR_MASK))
5725 s->flags |= SF_ERR_CLICL;
5726 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5727 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5728 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5729 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5730 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5731 }
5732
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5733 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5734 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5735 if (objt_server(s->target))
5736 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5737
5738 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5739 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5740
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5741 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5742 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5743 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5744
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5745 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5746 * 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]5747 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5748 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5749 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5750
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5751 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5752 * 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]5753 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5754 * modes are already handled by the stream sock layer. We must not do
5755 * this in content-length mode because it could present the MSG_MORE
5756 * flag with the last block of forwarded data, which would cause an
5757 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5758 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5759 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5760 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5761
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5762 return 0;
5763
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5764 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5765 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5766 if (sess->listener->counters)
5767 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5768
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5769 return_bad_req_stats_ok:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5770 /* we may have some pending data starting at req->buf->p */
5771 b_adv(req->buf, msg->next);
5772 msg->next = 0;
5773
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]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 = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5780 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
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 Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5784
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5785 if (!(s->flags & SF_ERR_MASK))
5786 s->flags |= SF_ERR_PRXCOND;
5787 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5788 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5789 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5790 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5791 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5792 }
5793 return 0;
5794
5795 aborted_xfer:
5796 txn->req.msg_state = HTTP_MSG_ERROR;
5797 if (txn->status) {
5798 /* Note: we don't send any error if some data were already sent */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5799 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5800 } else {
5801 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5802 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5803 }
5804 req->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5805 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]5806
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5807 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5808 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5809 if (objt_server(s->target))
5810 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5811
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5812 if (!(s->flags & SF_ERR_MASK))
5813 s->flags |= SF_ERR_SRVCL;
5814 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5815 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5816 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5817 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5818 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5819 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5820 return 0;
5821}
5822
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5823/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5824 * processing can continue on next analysers, or zero if it either needs more
5825 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5826 * 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]5827 * when it has nothing left to do, and may remove any analyser when it wants to
5828 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5829 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5830int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5831{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5832 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5833 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5834 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5835 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5836 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5837 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5838 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5839
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5840 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]5841 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5842 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5843 rep,
5844 rep->rex, rep->wex,
5845 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5846 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5847 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5848
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5849 /*
5850 * Now parse the partial (or complete) lines.
5851 * We will check the response syntax, and also join multi-line
5852 * headers. An index of all the lines will be elaborated while
5853 * parsing.
5854 *
5855 * For the parsing, we use a 28 states FSM.
5856 *
5857 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5858 * rep->buf->p = beginning of response
5859 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5860 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5861 * msg->eol = end of current header or line (LF or CRLF)
5862 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5863 */
5864
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5865 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5866 /* There's a protected area at the end of the buffer for rewriting
5867 * purposes. We don't want to start to parse the request if the
5868 * protected area is affected, because we may have to move processed
5869 * data later, which is much more complicated.
5870 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5871 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5872 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5873 /* some data has still not left the buffer, wake us once that's done */
5874 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5875 goto abort_response;
5876 channel_dont_close(rep);
5877 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5878 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5879 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5880 }
5881
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5882 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5883 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5884 buffer_slow_realign(rep->buf);
5885
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5886 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5887 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5888 }
5889
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5890 /* 1: we might have to print this header in debug mode */
5891 if (unlikely((global.mode & MODE_DEBUG) &&
5892 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5893 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5894 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5895
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5896 sol = rep->buf->p;
5897 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5898 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5899
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5900 sol += hdr_idx_first_pos(&txn->hdr_idx);
5901 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5902
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5903 while (cur_idx) {
5904 eol = sol + txn->hdr_idx.v[cur_idx].len;
5905 debug_hdr("srvhdr", s, sol, eol);
5906 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5907 cur_idx = txn->hdr_idx.v[cur_idx].next;
5908 }
5909 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5910
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5911 /*
5912 * Now we quickly check if we have found a full valid response.
5913 * If not so, we check the FD and buffer states before leaving.
5914 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5915 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5916 * responses are checked first.
5917 *
5918 * Depending on whether the client is still there or not, we
5919 * may send an error response back or not. Note that normally
5920 * we should only check for HTTP status there, and check I/O
5921 * errors somewhere else.
5922 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5923
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5924 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5925 /* Invalid response */
5926 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5927 /* we detected a parsing error. We want to archive this response
5928 * in the dedicated proxy area for later troubleshooting.
5929 */
5930 hdr_response_bad:
5931 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5932 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]5933
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5934 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5935 if (objt_server(s->target)) {
5936 objt_server(s->target)->counters.failed_resp++;
5937 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5938 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5939 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5940 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5941 rep->analysers = 0;
5942 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5943 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5944 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5945 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5946
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5947 if (!(s->flags & SF_ERR_MASK))
5948 s->flags |= SF_ERR_PRXCOND;
5949 if (!(s->flags & SF_FINST_MASK))
5950 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5951
5952 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5953 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5954
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5955 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5956 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5957 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5958 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5959 goto hdr_response_bad;
5960 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5961
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5962 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5963 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5964 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5965 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]5966 else if (txn->flags & TX_NOT_FIRST)
5967 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5968
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5969 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5970 if (objt_server(s->target)) {
5971 objt_server(s->target)->counters.failed_resp++;
5972 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5973 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5974
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5975 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5976 rep->analysers = 0;
5977 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5978 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5979 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5980 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5981
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5982 if (!(s->flags & SF_ERR_MASK))
5983 s->flags |= SF_ERR_SRVCL;
5984 if (!(s->flags & SF_FINST_MASK))
5985 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5986 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5987 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5988
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]5989 /* read timeout : return a 504 to the client. */
5990 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5991 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5992 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]5993 else if (txn->flags & TX_NOT_FIRST)
5994 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5995
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5996 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5997 if (objt_server(s->target)) {
5998 objt_server(s->target)->counters.failed_resp++;
5999 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6000 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6001
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6002 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6003 rep->analysers = 0;
6004 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6005 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6006 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6007 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]6008
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6009 if (!(s->flags & SF_ERR_MASK))
6010 s->flags |= SF_ERR_SRVTO;
6011 if (!(s->flags & SF_FINST_MASK))
6012 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6013 return 0;
6014 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]6015
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6016 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6017 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]6018 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6019 s->be->be_counters.cli_aborts++;
6020 if (objt_server(s->target))
6021 objt_server(s->target)->counters.cli_aborts++;
6022
6023 rep->analysers = 0;
6024 channel_auto_close(rep);
6025
6026 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6027 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6028 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6029
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6030 if (!(s->flags & SF_ERR_MASK))
6031 s->flags |= SF_ERR_CLICL;
6032 if (!(s->flags & SF_FINST_MASK))
6033 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6034
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6035 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6036 return 0;
6037 }
6038
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6039 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6040 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6041 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6042 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]6043 else if (txn->flags & TX_NOT_FIRST)
6044 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6045
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6046 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6047 if (objt_server(s->target)) {
6048 objt_server(s->target)->counters.failed_resp++;
6049 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6050 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6051
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6052 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6053 rep->analysers = 0;
6054 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6055 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6056 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6057 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6058
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6059 if (!(s->flags & SF_ERR_MASK))
6060 s->flags |= SF_ERR_SRVCL;
6061 if (!(s->flags & SF_FINST_MASK))
6062 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6063 return 0;
6064 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6065
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6066 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6067 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6068 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6069 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]6070 else if (txn->flags & TX_NOT_FIRST)
6071 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6072
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6073 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6074 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6075 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6076
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6077 if (!(s->flags & SF_ERR_MASK))
6078 s->flags |= SF_ERR_CLICL;
6079 if (!(s->flags & SF_FINST_MASK))
6080 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6081
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6082 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6083 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6084 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6085
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6086 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]6087 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6088 return 0;
6089 }
6090
6091 /* More interesting part now : we know that we have a complete
6092 * response which at least looks like HTTP. We have an indicator
6093 * of each header's length, so we can parse them quickly.
6094 */
6095
6096 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6097 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]6098
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6099 /*
6100 * 1: get the status code
6101 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6102 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6103 if (n < 1 || n > 5)
6104 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6105 /* when the client triggers a 4xx from the server, it's most often due
6106 * to a missing object or permission. These events should be tracked
6107 * because if they happen often, it may indicate a brute force or a
6108 * vulnerability scan.
6109 */
6110 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6111 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6112
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6113 if (objt_server(s->target))
6114 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6115
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]6116 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
6117 * exactly one digit "." one digit. This check may be disabled using
6118 * option accept-invalid-http-response.
6119 */
6120 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
6121 if (msg->sl.st.v_l != 8) {
6122 msg->err_pos = 0;
6123 goto hdr_response_bad;
6124 }
6125
6126 if (rep->buf->p[4] != '/' ||
6127 !isdigit((unsigned char)rep->buf->p[5]) ||
6128 rep->buf->p[6] != '.' ||
6129 !isdigit((unsigned char)rep->buf->p[7])) {
6130 msg->err_pos = 4;
6131 goto hdr_response_bad;
6132 }
6133 }
6134
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6135 /* check if the response is HTTP/1.1 or above */
6136 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6137 ((rep->buf->p[5] > '1') ||
6138 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6139 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6140
6141 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6142 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]6143
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6144 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6145 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6146
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6147 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]6148
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]6149 /* Adjust server's health based on status code. Note: status codes 501
6150 * and 505 are triggered on demand by client request, so we must not
6151 * count them as server failures.
6152 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6153 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6154 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6155 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6156 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6157 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6158 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6159
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6160 /*
6161 * 2: check for cacheability.
6162 */
6163
6164 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6165 case 100:
6166 /*
6167 * We may be facing a 100-continue response, in which case this
6168 * is not the right response, and we're waiting for the next one.
6169 * Let's allow this response to go to the client and wait for the
6170 * next one.
6171 */
6172 hdr_idx_init(&txn->hdr_idx);
6173 msg->next -= channel_forward(rep, msg->next);
6174 msg->msg_state = HTTP_MSG_RPBEFORE;
6175 txn->status = 0;
6176 s->logs.t_data = -1; /* was not a response yet */
6177 goto next_one;
6178
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6179 case 200:
6180 case 203:
6181 case 206:
6182 case 300:
6183 case 301:
6184 case 410:
6185 /* RFC2616 @13.4:
6186 * "A response received with a status code of
6187 * 200, 203, 206, 300, 301 or 410 MAY be stored
6188 * by a cache (...) unless a cache-control
6189 * directive prohibits caching."
6190 *
6191 * RFC2616 @9.5: POST method :
6192 * "Responses to this method are not cacheable,
6193 * unless the response includes appropriate
6194 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6195 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6196 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6197 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6198 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6199 break;
6200 default:
6201 break;
6202 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6203
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6204 /*
6205 * 3: we may need to capture headers
6206 */
6207 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6208 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6209 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6210 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6211
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6212 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6213 * by RFC7230#3.3.3 :
6214 *
6215 * The length of a message body is determined by one of the following
6216 * (in order of precedence):
6217 *
6218 * 1. Any response to a HEAD request and any response with a 1xx
6219 * (Informational), 204 (No Content), or 304 (Not Modified) status
6220 * code is always terminated by the first empty line after the
6221 * header fields, regardless of the header fields present in the
6222 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6223 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6224 * 2. Any 2xx (Successful) response to a CONNECT request implies that
6225 * the connection will become a tunnel immediately after the empty
6226 * line that concludes the header fields. A client MUST ignore any
6227 * Content-Length or Transfer-Encoding header fields received in
6228 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6229 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6230 * 3. If a Transfer-Encoding header field is present and the chunked
6231 * transfer coding (Section 4.1) is the final encoding, the message
6232 * body length is determined by reading and decoding the chunked
6233 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6234 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6235 * If a Transfer-Encoding header field is present in a response and
6236 * the chunked transfer coding is not the final encoding, the
6237 * message body length is determined by reading the connection until
6238 * it is closed by the server. If a Transfer-Encoding header field
6239 * is present in a request and the chunked transfer coding is not
6240 * the final encoding, the message body length cannot be determined
6241 * reliably; the server MUST respond with the 400 (Bad Request)
6242 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6243 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6244 * If a message is received with both a Transfer-Encoding and a
6245 * Content-Length header field, the Transfer-Encoding overrides the
6246 * Content-Length. Such a message might indicate an attempt to
6247 * perform request smuggling (Section 9.5) or response splitting
6248 * (Section 9.4) and ought to be handled as an error. A sender MUST
6249 * remove the received Content-Length field prior to forwarding such
6250 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6251 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6252 * 4. If a message is received without Transfer-Encoding and with
6253 * either multiple Content-Length header fields having differing
6254 * field-values or a single Content-Length header field having an
6255 * invalid value, then the message framing is invalid and the
6256 * recipient MUST treat it as an unrecoverable error. If this is a
6257 * request message, the server MUST respond with a 400 (Bad Request)
6258 * status code and then close the connection. If this is a response
6259 * message received by a proxy, the proxy MUST close the connection
6260 * to the server, discard the received response, and send a 502 (Bad
6261 * Gateway) response to the client. If this is a response message
6262 * received by a user agent, the user agent MUST close the
6263 * connection to the server and discard the received response.
6264 *
6265 * 5. If a valid Content-Length header field is present without
6266 * Transfer-Encoding, its decimal value defines the expected message
6267 * body length in octets. If the sender closes the connection or
6268 * the recipient times out before the indicated number of octets are
6269 * received, the recipient MUST consider the message to be
6270 * incomplete and close the connection.
6271 *
6272 * 6. If this is a request message and none of the above are true, then
6273 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6274 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6275 * 7. Otherwise, this is a response message without a declared message
6276 * body length, so the message body length is determined by the
6277 * number of octets received prior to the server closing the
6278 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6279 */
6280
6281 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6282 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6283 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6284 * FIXME: should we parse anyway and return an error on chunked encoding ?
6285 */
6286 if (txn->meth == HTTP_METH_HEAD ||
6287 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6288 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6289 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]6290 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6291 goto skip_content_length;
6292 }
6293
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6294 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6295 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6296 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6297 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6298 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6299 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6300 /* bad transfer-encoding (chunked followed by something else) */
6301 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6302 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6303 break;
6304 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6305 }
6306
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6307 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6308 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6309 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6310 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6311 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6312 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6313 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]6314 signed long long cl;
6315
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6316 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6317 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6318 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6319 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6320
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6321 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6322 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6323 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6324 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6325
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6326 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6327 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6328 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6329 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6330
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6331 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6332 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6333 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6334 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6335
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6336 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6337 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6338 }
6339
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6340 if (sess->fe->comp || s->be->comp)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6341 select_compression_response_header(s, rep->buf);
6342
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6343skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6344 /* Now we have to check if we need to modify the Connection header.
6345 * This is more difficult on the response than it is on the request,
6346 * because we can have two different HTTP versions and we don't know
6347 * how the client will interprete a response. For instance, let's say
6348 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6349 * HTTP/1.1 response without any header. Maybe it will bound itself to
6350 * HTTP/1.0 because it only knows about it, and will consider the lack
6351 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6352 * the lack of header as a keep-alive. Thus we will use two flags
6353 * indicating how a request MAY be understood by the client. In case
6354 * of multiple possibilities, we'll fix the header to be explicit. If
6355 * ambiguous cases such as both close and keepalive are seen, then we
6356 * will fall back to explicit close. Note that we won't take risks with
6357 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6358 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6359 */
6360
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6361 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6362 txn->status == 101)) {
6363 /* Either we've established an explicit tunnel, or we're
6364 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6365 * to understand the next protocols. We have to switch to tunnel
6366 * mode, so that we transfer the request and responses then let
6367 * this protocol pass unmodified. When we later implement specific
6368 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6369 * header which contains information about that protocol for
6370 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6371 */
6372 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6373 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6374 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6375 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6376 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6377 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6378 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6379
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6380 /* this situation happens when combining pretend-keepalive with httpclose. */
6381 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6382 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6383 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6384 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6385
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6386 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6387 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6388 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6389 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6390
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6391 /* now adjust header transformations depending on current state */
6392 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6393 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6394 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6395 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6396 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6397 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6398 else { /* SCL / KAL */
6399 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6400 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6401 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6402 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6403
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6404 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6405 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6406
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6407 /* Some keep-alive responses are converted to Server-close if
6408 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6409 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6410 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6411 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6412 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6413 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6414 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6415 }
6416
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6417 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6418 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6419
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6420 /* end of job, return OK */
6421 rep->analysers &= ~an_bit;
6422 rep->analyse_exp = TICK_ETERNITY;
6423 channel_auto_close(rep);
6424 return 1;
6425
6426 abort_keep_alive:
6427 /* A keep-alive request to the server failed on a network error.
6428 * The client is required to retry. We need to close without returning
6429 * any other information so that the client retries.
6430 */
6431 txn->status = 0;
6432 rep->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6433 s->req.analysers = 0;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6434 channel_auto_close(rep);
6435 s->logs.logwait = 0;
6436 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6437 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6438 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6439 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6440 return 0;
6441}
6442
6443/* This function performs all the processing enabled for the current response.
6444 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6445 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6446 * other functions. It works like process_request (see indications above).
6447 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6448int 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]6449{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6450 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6451 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6452 struct http_msg *msg = &txn->rsp;
6453 struct proxy *cur_proxy;
6454 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6455 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6456
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6457 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]6458 now_ms, __FUNCTION__,
6459 s,
6460 rep,
6461 rep->rex, rep->wex,
6462 rep->flags,
6463 rep->buf->i,
6464 rep->analysers);
6465
6466 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6467 return 0;
6468
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6469 /* The stats applet needs to adjust the Connection header but we don't
6470 * apply any filter there.
6471 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6472 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6473 rep->analysers &= ~an_bit;
6474 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6475 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6476 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6477
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6478 /*
6479 * We will have to evaluate the filters.
6480 * As opposed to version 1.2, now they will be evaluated in the
6481 * filters order and not in the header order. This means that
6482 * each filter has to be validated among all headers.
6483 *
6484 * Filters are tried with ->be first, then with ->fe if it is
6485 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6486 *
6487 * Maybe we are in resume condiion. In this case I choose the
6488 * "struct proxy" which contains the rule list matching the resume
6489 * pointer. If none of theses "struct proxy" match, I initialise
6490 * the process with the first one.
6491 *
6492 * In fact, I check only correspondance betwwen the current list
6493 * pointer and the ->fe rule list. If it doesn't match, I initialize
6494 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6495 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6496 if (s->current_rule_list == &sess->fe->http_res_rules)
6497 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6498 else
6499 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6500 while (1) {
6501 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6502
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6503 /* evaluate http-response rules */
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame^]6504 if (ret == HTTP_RULE_RES_CONT) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6505 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6506
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame^]6507 if (ret == HTTP_RULE_RES_BADREQ)
6508 goto return_srv_prx_502;
6509
6510 if (ret == HTTP_RULE_RES_DONE) {
6511 rep->analysers &= ~an_bit;
6512 rep->analyse_exp = TICK_ETERNITY;
6513 return 1;
6514 }
6515 }
6516
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6517 /* we need to be called again. */
6518 if (ret == HTTP_RULE_RES_YIELD) {
6519 channel_dont_close(rep);
6520 return 0;
6521 }
6522
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6523 /* try headers filters */
6524 if (rule_set->rsp_exp != NULL) {
6525 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6526 return_bad_resp:
6527 if (objt_server(s->target)) {
6528 objt_server(s->target)->counters.failed_resp++;
6529 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6530 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6531 s->be->be_counters.failed_resp++;
6532 return_srv_prx_502:
6533 rep->analysers = 0;
6534 txn->status = 502;
6535 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6536 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6537 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6538 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6539 if (!(s->flags & SF_ERR_MASK))
6540 s->flags |= SF_ERR_PRXCOND;
6541 if (!(s->flags & SF_FINST_MASK))
6542 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6543 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6544 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6545 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6546
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6547 /* has the response been denied ? */
6548 if (txn->flags & TX_SVDENY) {
6549 if (objt_server(s->target))
6550 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6551
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6552 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6553 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6554 if (sess->listener->counters)
6555 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6556
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6557 goto return_srv_prx_502;
6558 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6559
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6560 /* add response headers from the rule sets in the same order */
6561 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6562 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6563 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6564 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6565 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]6566 ret = acl_pass(ret);
6567 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6568 ret = !ret;
6569 if (!ret)
6570 continue;
6571 }
6572 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6573 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6574 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6575
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6576 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6577 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6578 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6579 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6580 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6581
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6582 /* After this point, this anayzer can't return yield, so we can
6583 * remove the bit corresponding to this analyzer from the list.
6584 *
6585 * Note that the intermediate returns and goto found previously
6586 * reset the analyzers.
6587 */
6588 rep->analysers &= ~an_bit;
6589 rep->analyse_exp = TICK_ETERNITY;
6590
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6591 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6592 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6593 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6594
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6595 /*
6596 * Now check for a server cookie.
6597 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6598 if (s->be->cookie_name || s->be->appsession_name || sess->fe->capture_name ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6599 (s->be->options & PR_O_CHK_CACHE))
6600 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6601
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6602 /*
6603 * Check for cache-control or pragma headers if required.
6604 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6605 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]6606 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6607
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6608 /*
6609 * Add server cookie in the response if needed
6610 */
6611 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6612 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6613 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6614 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6615 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6616 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6617 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6618 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6619 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6620 /* the server is known, it's not the one the client requested, or the
6621 * cookie's last seen date needs to be refreshed. We have to
6622 * insert a set-cookie here, except if we want to insert only on POST
6623 * requests and this one isn't. Note that servers which don't have cookies
6624 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6625 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6626 if (!objt_server(s->target)->cookie) {
6627 chunk_printf(&trash,
6628 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6629 s->be->cookie_name);
6630 }
6631 else {
6632 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]6633
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6634 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6635 /* emit last_date, which is mandatory */
6636 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6637 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6638 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6639
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6640 if (s->be->cookie_maxlife) {
6641 /* emit first_date, which is either the original one or
6642 * the current date.
6643 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6644 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6645 s30tob64(txn->cookie_first_date ?
6646 txn->cookie_first_date >> 2 :
6647 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6648 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6649 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6650 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6651 chunk_appendf(&trash, "; path=/");
6652 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6653
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6654 if (s->be->cookie_domain)
6655 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6656
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6657 if (s->be->ck_opts & PR_CK_HTTPONLY)
6658 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6659
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6660 if (s->be->ck_opts & PR_CK_SECURE)
6661 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6662
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6663 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6664 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6665
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6666 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6667 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6668 /* the server did not change, only the date was updated */
6669 txn->flags |= TX_SCK_UPDATED;
6670 else
6671 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6672
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6673 /* Here, we will tell an eventual cache on the client side that we don't
6674 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6675 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6676 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6677 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6678 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6679
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6680 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6681
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6682 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6683 "Cache-control: private", 22) < 0))
6684 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6685 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6686 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6687
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6688 /*
6689 * Check if result will be cacheable with a cookie.
6690 * We'll block the response if security checks have caught
6691 * nasty things such as a cacheable cookie.
6692 */
6693 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6694 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6695 (s->be->options & PR_O_CHK_CACHE)) {
6696 /* we're in presence of a cacheable response containing
6697 * a set-cookie header. We'll block it as requested by
6698 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6699 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6700 if (objt_server(s->target))
6701 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6702
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6703 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6704 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6705 if (sess->listener->counters)
6706 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6707
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6708 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6709 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6710 send_log(s->be, LOG_ALERT,
6711 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6712 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6713 goto return_srv_prx_502;
6714 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6715
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6716 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6717 /*
6718 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6719 * If an "Upgrade" token is found, the header is left untouched in order
6720 * 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]6721 * if anything but "Upgrade" is present in the Connection header. We don't
6722 * want to touch any 101 response either since it's switching to another
6723 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6724 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6725 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6726 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6727 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6728 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6729 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6730
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6731 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6732 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6733 /* we want a keep-alive response here. Keep-alive header
6734 * required if either side is not 1.1.
6735 */
6736 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6737 want_flags |= TX_CON_KAL_SET;
6738 }
6739 else {
6740 /* we want a close response here. Close header required if
6741 * the server is 1.1, regardless of the client.
6742 */
6743 if (msg->flags & HTTP_MSGF_VER_11)
6744 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6745 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6746
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6747 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6748 http_change_connection_header(txn, msg, want_flags);
6749 }
6750
6751 skip_header_mangling:
6752 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
6753 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
6754 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6755
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6756 /* if the user wants to log as soon as possible, without counting
6757 * bytes from the server, then this is the right moment. We have
6758 * to temporarily assign bytes_out to log what we currently have.
6759 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6760 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6761 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6762 s->logs.bytes_out = txn->rsp.eoh;
6763 s->do_log(s);
6764 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6765 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6766 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6767}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6768
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6769/* This function is an analyser which forwards response body (including chunk
6770 * sizes if any). It is called as soon as we must forward, even if we forward
6771 * zero byte. The only situation where it must not be called is when we're in
6772 * tunnel mode and we want to forward till the close. It's used both to forward
6773 * remaining data and to resync after end of body. It expects the msg_state to
6774 * 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]6775 * 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]6776 *
6777 * It is capable of compressing response data both in content-length mode and
6778 * in chunked mode. The state machines follows different flows depending on
6779 * whether content-length and chunked modes are used, since there are no
6780 * trailers in content-length :
6781 *
6782 * chk-mode cl-mode
6783 * ,----- BODY -----.
6784 * / \
6785 * V size > 0 V chk-mode
6786 * .--> SIZE -------------> DATA -------------> CRLF
6787 * | | size == 0 | last byte |
6788 * | v final crlf v inspected |
6789 * | TRAILERS -----------> DONE |
6790 * | |
6791 * `----------------------------------------------'
6792 *
6793 * Compression only happens in the DATA state, and must be flushed in final
6794 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6795 * is performed at once on final states for all bytes parsed, or when leaving
6796 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6797 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6798int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6799{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6800 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6801 struct http_txn *txn = s->txn;
6802 struct http_msg *msg = &s->txn->rsp;
Willy Tarreauf2f7d6b2014-11-24 11:55:08 +0100[diff] [blame]6803 static struct buffer *tmpbuf = &buf_empty;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6804 int compressing = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6805 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6806
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6807 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6808 return 0;
6809
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6810 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]6811 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6812 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6813 /* Output closed while we were sending data. We must abort and
6814 * wake the other side up.
6815 */
6816 msg->msg_state = HTTP_MSG_ERROR;
6817 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6818 return 1;
6819 }
6820
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6821 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6822 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6823
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]6824 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6825 /* we have msg->sov which points to the first byte of message
6826 * body, and res->buf.p still points to the beginning of the
6827 * message. We forward the headers now, as we don't need them
6828 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6829 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6830 b_adv(res->buf, msg->sov);
6831 msg->next -= msg->sov;
6832 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6833
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6834 /* The previous analysers guarantee that the state is somewhere
6835 * between MSG_BODY and the first MSG_DATA. So msg->sol and
6836 * msg->next are always correct.
6837 */
6838 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
6839 if (msg->flags & HTTP_MSGF_TE_CHNK)
6840 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6841 else
6842 msg->msg_state = HTTP_MSG_DATA;
6843 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6844 }
6845
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6846 if (res->to_forward) {
6847 /* We can't process the buffer's contents yet */
6848 res->flags |= CF_WAKE_WRITE;
6849 goto missing_data;
6850 }
6851
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6852 if (unlikely(s->comp_algo != NULL) && msg->msg_state < HTTP_MSG_TRAILERS) {
6853 /* We need a compression buffer in the DATA state to put the
6854 * output of compressed data, and in CRLF state to let the
6855 * TRAILERS state finish the job of removing the trailing CRLF.
6856 */
Willy Tarreauf2f7d6b2014-11-24 11:55:08 +0100[diff] [blame]6857 if (unlikely(!tmpbuf->size)) {
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6858 /* this is the first time we need the compression buffer */
Willy Tarreaue583ea52014-11-24 11:30:16 +0100[diff] [blame]6859 if (b_alloc(&tmpbuf) == NULL)
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6860 goto aborted_xfer; /* no memory */
6861 }
6862
6863 ret = http_compression_buffer_init(s, res->buf, tmpbuf);
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6864 if (ret < 0) {
6865 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6866 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6867 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6868 compressing = 1;
6869 }
6870
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6871 while (1) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6872 switch (msg->msg_state - HTTP_MSG_DATA) {
6873 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6874 /* we may have some pending data starting at res->buf->p */
6875 if (unlikely(s->comp_algo)) {
Willy Tarreau7f2f8d52014-04-18 00:20:14 +0200[diff] [blame]6876 ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6877 if (ret < 0)
6878 goto aborted_xfer;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6879
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6880 if (msg->chunk_len) {
6881 /* input empty or output full */
6882 if (res->buf->i > msg->next)
6883 res->flags |= CF_WAKE_WRITE;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6884 goto missing_data;
6885 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6886 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6887 else {
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6888 if (msg->chunk_len > res->buf->i - msg->next) {
6889 /* output full */
6890 res->flags |= CF_WAKE_WRITE;
6891 goto missing_data;
6892 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6893 msg->next += msg->chunk_len;
6894 msg->chunk_len = 0;
6895 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6896
6897 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6898 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6899 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6900 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6901 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6902 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6903 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6904 /* fall through for HTTP_MSG_CHUNK_CRLF */
6905
6906 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6907 /* we want the CRLF after the data */
6908
6909 ret = http_skip_chunk_crlf(msg);
6910 if (ret == 0)
6911 goto missing_data;
6912 else if (ret < 0) {
6913 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6914 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]6915 goto return_bad_res;
6916 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6917 /* we're in MSG_CHUNK_SIZE now, fall through */
6918
6919 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6920 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6921 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6922 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6923 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6924
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6925 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6926 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6927 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6928 else if (ret < 0) {
6929 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6930 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]6931 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6932 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6933 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6934 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6935
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6936 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6937 if (unlikely(compressing)) {
6938 /* we need to flush output contents before syncing FSMs */
6939 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6940 compressing = 0;
6941 }
6942
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6943 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6944 if (ret == 0)
6945 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6946 else if (ret < 0) {
6947 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6948 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]6949 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6950 }
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6951 /* we're in HTTP_MSG_DONE now, fall through */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6952
6953 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6954 /* other states, DONE...TUNNEL */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6955 if (unlikely(compressing)) {
6956 /* we need to flush output contents before syncing FSMs */
6957 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6958 compressing = 0;
6959 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6960
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6961 /* we may have some pending data starting at res->buf->p
6962 * such as a last chunk of data or trailers.
6963 */
6964 b_adv(res->buf, msg->next);
6965 msg->next = 0;
6966
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6967 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6968 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6969 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6970 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6971 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6972
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6973 if (http_resync_states(s)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6974 /* some state changes occurred, maybe the analyser
6975 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6976 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6977 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6978 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6979 /* response errors are most likely due to
6980 * the client aborting the transfer.
6981 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6982 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6983 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6984 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6985 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, sess->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6986 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6987 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6988 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6989 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6990 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6991 }
6992 }
6993
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6994 missing_data:
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6995 /* we may have some pending data starting at res->buf->p */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6996 if (unlikely(compressing)) {
6997 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6998 compressing = 0;
6999 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]7000
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7001 if ((s->comp_algo == NULL || msg->msg_state >= HTTP_MSG_TRAILERS)) {
7002 b_adv(res->buf, msg->next);
7003 msg->next = 0;
7004 msg->chunk_len -= channel_forward(res, msg->chunk_len);
7005 }
7006
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]7007 if (res->flags & CF_SHUTW)
7008 goto aborted_xfer;
7009
7010 /* stop waiting for data if the input is closed before the end. If the
7011 * client side was already closed, it means that the client has aborted,
7012 * so we don't want to count this as a server abort. Otherwise it's a
7013 * server abort.
7014 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7015 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7016 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]7017 goto aborted_xfer;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7018 if (!(s->flags & SF_ERR_MASK))
7019 s->flags |= SF_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7020 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7021 if (objt_server(s->target))
7022 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7023 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7024 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]7025
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7026 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7027 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7028 goto return_bad_res;
7029
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7030 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7031 * 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]7032 * Similarly, with keep-alive on the client side, we don't want to forward a
7033 * close.
7034 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]7035 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7036 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
7037 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]7038 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7039
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7040 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7041 * 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]7042 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]7043 * modes are already handled by the stream sock layer. We must not do
7044 * this in content-length mode because it could present the MSG_MORE
7045 * flag with the last block of forwarded data, which would cause an
7046 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7047 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]7048 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7049 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7050
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7051 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7052 return 0;
7053
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7054 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7055 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7056 if (objt_server(s->target))
7057 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7058
7059 return_bad_res_stats_ok:
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]7060 if (unlikely(compressing)) {
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]7061 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]7062 compressing = 0;
7063 }
7064
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7065 /* we may have some pending data starting at res->buf->p */
7066 if (s->comp_algo == NULL) {
7067 b_adv(res->buf, msg->next);
7068 msg->next = 0;
7069 }
7070
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7071 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]7072 /* don't send any error message as we're in the body */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]7073 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7074 res->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7075 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]7076 if (objt_server(s->target))
7077 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7078
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7079 if (!(s->flags & SF_ERR_MASK))
7080 s->flags |= SF_ERR_PRXCOND;
7081 if (!(s->flags & SF_FINST_MASK))
7082 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7083 return 0;
7084
7085 aborted_xfer:
Willy Tarreau6fef8ae2014-04-22 21:22:06 +0200[diff] [blame]7086 if (unlikely(compressing)) {
7087 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
7088 compressing = 0;
7089 }
7090
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7091 txn->rsp.msg_state = HTTP_MSG_ERROR;
7092 /* don't send any error message as we're in the body */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]7093 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7094 res->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7095 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]7096
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7097 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7098 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7099 if (objt_server(s->target))
7100 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7101
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7102 if (!(s->flags & SF_ERR_MASK))
7103 s->flags |= SF_ERR_CLICL;
7104 if (!(s->flags & SF_FINST_MASK))
7105 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7106 return 0;
7107}
7108
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7109/* Iterate the same filter through all request headers.
7110 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7111 * Since it can manage the switch to another backend, it updates the per-proxy
7112 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7113 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7114int 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]7115{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7116 char *cur_ptr, *cur_end, *cur_next;
7117 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7118 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7119 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7120 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]7121
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7122 last_hdr = 0;
7123
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7124 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7125 old_idx = 0;
7126
7127 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7128 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7129 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7130 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7131 (exp->action == ACT_ALLOW ||
7132 exp->action == ACT_DENY ||
7133 exp->action == ACT_TARPIT))
7134 return 0;
7135
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7136 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7137 if (!cur_idx)
7138 break;
7139
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7140 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7141 cur_ptr = cur_next;
7142 cur_end = cur_ptr + cur_hdr->len;
7143 cur_next = cur_end + cur_hdr->cr + 1;
7144
7145 /* Now we have one header between cur_ptr and cur_end,
7146 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7147 */
7148
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7149 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]7150 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7151 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7152 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7153 last_hdr = 1;
7154 break;
7155
7156 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7157 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7158 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7159 break;
7160
7161 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7162 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7163 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7164 break;
7165
7166 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7167 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7168 if (trash.len < 0)
7169 return -1;
7170
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7171 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7172 /* FIXME: if the user adds a newline in the replacement, the
7173 * index will not be recalculated for now, and the new line
7174 * will not be counted as a new header.
7175 */
7176
7177 cur_end += delta;
7178 cur_next += delta;
7179 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7180 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7181 break;
7182
7183 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7184 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7185 cur_next += delta;
7186
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7187 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7188 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7189 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7190 cur_hdr->len = 0;
7191 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7192 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7193 break;
7194
7195 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7196 }
7197
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7198 /* keep the link from this header to next one in case of later
7199 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7200 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7201 old_idx = cur_idx;
7202 }
7203 return 0;
7204}
7205
7206
7207/* Apply the filter to the request line.
7208 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7209 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7210 * Since it can manage the switch to another backend, it updates the per-proxy
7211 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7212 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7213int 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]7214{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7215 char *cur_ptr, *cur_end;
7216 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7217 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7218 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7219
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7220 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7221 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7222 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7223 (exp->action == ACT_ALLOW ||
7224 exp->action == ACT_DENY ||
7225 exp->action == ACT_TARPIT))
7226 return 0;
7227 else if (exp->action == ACT_REMOVE)
7228 return 0;
7229
7230 done = 0;
7231
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7232 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7233 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7234
7235 /* Now we have the request line between cur_ptr and cur_end */
7236
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7237 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]7238 switch (exp->action) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7239 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7240 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7241 done = 1;
7242 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7243
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7244 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7245 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7246 done = 1;
7247 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7248
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7249 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7250 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7251 done = 1;
7252 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7253
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7254 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7255 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7256 if (trash.len < 0)
7257 return -1;
7258
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7259 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7260 /* FIXME: if the user adds a newline in the replacement, the
7261 * index will not be recalculated for now, and the new line
7262 * will not be counted as a new header.
7263 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7264
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7265 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7266 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7267 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7268 HTTP_MSG_RQMETH,
7269 cur_ptr, cur_end + 1,
7270 NULL, NULL);
7271 if (unlikely(!cur_end))
7272 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7273
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7274 /* we have a full request and we know that we have either a CR
7275 * or an LF at <ptr>.
7276 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7277 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7278 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]7279 /* there is no point trying this regex on headers */
7280 return 1;
7281 }
7282 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7283 return done;
7284}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7285
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7286
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7287
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7288/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7289 * 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]7290 * 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]7291 * unparsable request. Since it can manage the switch to another backend, it
7292 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7293 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7294int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7295{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7296 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7297 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7298 struct hdr_exp *exp;
7299
7300 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7301 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7302
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7303 /*
7304 * The interleaving of transformations and verdicts
7305 * makes it difficult to decide to continue or stop
7306 * the evaluation.
7307 */
7308
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7309 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7310 break;
7311
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7312 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7313 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7314 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7315 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7316
7317 /* if this filter had a condition, evaluate it now and skip to
7318 * next filter if the condition does not match.
7319 */
7320 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7321 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]7322 ret = acl_pass(ret);
7323 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7324 ret = !ret;
7325
7326 if (!ret)
7327 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7328 }
7329
7330 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7331 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7332 if (unlikely(ret < 0))
7333 return -1;
7334
7335 if (likely(ret == 0)) {
7336 /* The filter did not match the request, it can be
7337 * iterated through all headers.
7338 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7339 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7340 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7341 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7342 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7343 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7344}
7345
7346
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7347
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7348/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7349 * Try to retrieve the server associated to the appsession.
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7350 * If the server is found, it's assigned to the stream.
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7351 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7352void manage_client_side_appsession(struct stream *s, const char *buf, int len) {
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7353 struct http_txn *txn = s->txn;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7354 appsess *asession = NULL;
7355 char *sessid_temp = NULL;
7356
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7357 if (len > s->be->appsession_len) {
7358 len = s->be->appsession_len;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7359 }
7360
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7361 if (s->be->options2 & PR_O2_AS_REQL) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7362 /* request-learn option is enabled : store the sessid in the stream for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7363 if (txn->sessid != NULL) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7364 /* 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]7365 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7366 }
7367
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7368 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7369 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7370 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]7371 return;
7372 }
7373
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7374 memcpy(txn->sessid, buf, len);
7375 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7376 }
7377
7378 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
7379 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7380 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]7381 return;
7382 }
7383
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7384 memcpy(sessid_temp, buf, len);
7385 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7386
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7387 asession = appsession_hash_lookup(&(s->be->htbl_proxy), sessid_temp);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7388 /* free previously allocated memory */
7389 pool_free2(apools.sessid, sessid_temp);
7390
7391 if (asession != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7392 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
7393 if (!(s->be->options2 & PR_O2_AS_REQL))
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7394 asession->request_count++;
7395
7396 if (asession->serverid != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7397 struct server *srv = s->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7398
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7399 while (srv) {
7400 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7401 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7402 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7403 (s->flags & SF_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7404 /* we found the server and it's usable */
7405 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7406 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7407 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7408 s->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]7409
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7410 break;
7411 } else {
7412 txn->flags &= ~TX_CK_MASK;
7413 txn->flags |= TX_CK_DOWN;
7414 }
7415 }
7416 srv = srv->next;
7417 }
7418 }
7419 }
7420}
7421
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7422/* Find the end of a cookie value contained between <s> and <e>. It works the
7423 * same way as with headers above except that the semi-colon also ends a token.
7424 * See RFC2965 for more information. Note that it requires a valid header to
7425 * return a valid result.
7426 */
7427char *find_cookie_value_end(char *s, const char *e)
7428{
7429 int quoted, qdpair;
7430
7431 quoted = qdpair = 0;
7432 for (; s < e; s++) {
7433 if (qdpair) qdpair = 0;
7434 else if (quoted) {
7435 if (*s == '\\') qdpair = 1;
7436 else if (*s == '"') quoted = 0;
7437 }
7438 else if (*s == '"') quoted = 1;
7439 else if (*s == ',' || *s == ';') return s;
7440 }
7441 return s;
7442}
7443
7444/* Delete a value in a header between delimiters <from> and <next> in buffer
7445 * <buf>. The number of characters displaced is returned, and the pointer to
7446 * the first delimiter is updated if required. The function tries as much as
7447 * possible to respect the following principles :
7448 * - replace <from> delimiter by the <next> one unless <from> points to a
7449 * colon, in which case <next> is simply removed
7450 * - set exactly one space character after the new first delimiter, unless
7451 * there are not enough characters in the block being moved to do so.
7452 * - remove unneeded spaces before the previous delimiter and after the new
7453 * one.
7454 *
7455 * It is the caller's responsibility to ensure that :
7456 * - <from> points to a valid delimiter or the colon ;
7457 * - <next> points to a valid delimiter or the final CR/LF ;
7458 * - there are non-space chars before <from> ;
7459 * - there is a CR/LF at or after <next>.
7460 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7461int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7462{
7463 char *prev = *from;
7464
7465 if (*prev == ':') {
7466 /* We're removing the first value, preserve the colon and add a
7467 * space if possible.
7468 */
7469 if (!http_is_crlf[(unsigned char)*next])
7470 next++;
7471 prev++;
7472 if (prev < next)
7473 *prev++ = ' ';
7474
7475 while (http_is_spht[(unsigned char)*next])
7476 next++;
7477 } else {
7478 /* Remove useless spaces before the old delimiter. */
7479 while (http_is_spht[(unsigned char)*(prev-1)])
7480 prev--;
7481 *from = prev;
7482
7483 /* copy the delimiter and if possible a space if we're
7484 * not at the end of the line.
7485 */
7486 if (!http_is_crlf[(unsigned char)*next]) {
7487 *prev++ = *next++;
7488 if (prev + 1 < next)
7489 *prev++ = ' ';
7490 while (http_is_spht[(unsigned char)*next])
7491 next++;
7492 }
7493 }
7494 return buffer_replace2(buf, prev, next, NULL, 0);
7495}
7496
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7497/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7498 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7499 * desirable to call it only when needed. This code is quite complex because
7500 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7501 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7502 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7503void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7504{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7505 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7506 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7507 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7508 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7509 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7510 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7511
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7512 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7513 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7514 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7515
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7516 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7517 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7518 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7519
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7520 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7521 hdr_beg = hdr_next;
7522 hdr_end = hdr_beg + cur_hdr->len;
7523 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7524
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7525 /* We have one full header between hdr_beg and hdr_end, and the
7526 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7527 * "Cookie:" headers.
7528 */
7529
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7530 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7531 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7532 old_idx = cur_idx;
7533 continue;
7534 }
7535
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7536 del_from = NULL; /* nothing to be deleted */
7537 preserve_hdr = 0; /* assume we may kill the whole header */
7538
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7539 /* Now look for cookies. Conforming to RFC2109, we have to support
7540 * attributes whose name begin with a '$', and associate them with
7541 * the right cookie, if we want to delete this cookie.
7542 * So there are 3 cases for each cookie read :
7543 * 1) it's a special attribute, beginning with a '$' : ignore it.
7544 * 2) it's a server id cookie that we *MAY* want to delete : save
7545 * some pointers on it (last semi-colon, beginning of cookie...)
7546 * 3) it's an application cookie : we *MAY* have to delete a previous
7547 * "special" cookie.
7548 * At the end of loop, if a "special" cookie remains, we may have to
7549 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7550 * *MUST* delete it.
7551 *
7552 * Note: RFC2965 is unclear about the processing of spaces around
7553 * the equal sign in the ATTR=VALUE form. A careful inspection of
7554 * the RFC explicitly allows spaces before it, and not within the
7555 * tokens (attrs or values). An inspection of RFC2109 allows that
7556 * too but section 10.1.3 lets one think that spaces may be allowed
7557 * after the equal sign too, resulting in some (rare) buggy
7558 * implementations trying to do that. So let's do what servers do.
7559 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7560 * allowed quoted strings in values, with any possible character
7561 * after a backslash, including control chars and delimitors, which
7562 * causes parsing to become ambiguous. Browsers also allow spaces
7563 * within values even without quotes.
7564 *
7565 * We have to keep multiple pointers in order to support cookie
7566 * removal at the beginning, middle or end of header without
7567 * corrupting the header. All of these headers are valid :
7568 *
7569 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7570 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7571 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7572 * | | | | | | | | |
7573 * | | | | | | | | hdr_end <--+
7574 * | | | | | | | +--> next
7575 * | | | | | | +----> val_end
7576 * | | | | | +-----------> val_beg
7577 * | | | | +--------------> equal
7578 * | | | +----------------> att_end
7579 * | | +---------------------> att_beg
7580 * | +--------------------------> prev
7581 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7582 */
7583
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7584 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7585 /* Iterate through all cookies on this line */
7586
7587 /* find att_beg */
7588 att_beg = prev + 1;
7589 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7590 att_beg++;
7591
7592 /* find att_end : this is the first character after the last non
7593 * space before the equal. It may be equal to hdr_end.
7594 */
7595 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7596
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7597 while (equal < hdr_end) {
7598 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7599 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7600 if (http_is_spht[(unsigned char)*equal++])
7601 continue;
7602 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7603 }
7604
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7605 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7606 * is between <att_beg> and <equal>, both may be identical.
7607 */
7608
7609 /* look for end of cookie if there is an equal sign */
7610 if (equal < hdr_end && *equal == '=') {
7611 /* look for the beginning of the value */
7612 val_beg = equal + 1;
7613 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7614 val_beg++;
7615
7616 /* find the end of the value, respecting quotes */
7617 next = find_cookie_value_end(val_beg, hdr_end);
7618
7619 /* make val_end point to the first white space or delimitor after the value */
7620 val_end = next;
7621 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7622 val_end--;
7623 } else {
7624 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7625 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7626
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7627 /* We have nothing to do with attributes beginning with '$'. However,
7628 * they will automatically be removed if a header before them is removed,
7629 * since they're supposed to be linked together.
7630 */
7631 if (*att_beg == '$')
7632 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7633
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7634 /* Ignore cookies with no equal sign */
7635 if (equal == next) {
7636 /* This is not our cookie, so we must preserve it. But if we already
7637 * scheduled another cookie for removal, we cannot remove the
7638 * complete header, but we can remove the previous block itself.
7639 */
7640 preserve_hdr = 1;
7641 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7642 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7643 val_end += delta;
7644 next += delta;
7645 hdr_end += delta;
7646 hdr_next += delta;
7647 cur_hdr->len += delta;
7648 http_msg_move_end(&txn->req, delta);
7649 prev = del_from;
7650 del_from = NULL;
7651 }
7652 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7653 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7654
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7655 /* if there are spaces around the equal sign, we need to
7656 * strip them otherwise we'll get trouble for cookie captures,
7657 * or even for rewrites. Since this happens extremely rarely,
7658 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7659 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7660 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7661 int stripped_before = 0;
7662 int stripped_after = 0;
7663
7664 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7665 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7666 equal += stripped_before;
7667 val_beg += stripped_before;
7668 }
7669
7670 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7671 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7672 val_beg += stripped_after;
7673 stripped_before += stripped_after;
7674 }
7675
7676 val_end += stripped_before;
7677 next += stripped_before;
7678 hdr_end += stripped_before;
7679 hdr_next += stripped_before;
7680 cur_hdr->len += stripped_before;
7681 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7682 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7683 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7684
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7685 /* First, let's see if we want to capture this cookie. We check
7686 * that we don't already have a client side cookie, because we
7687 * can only capture one. Also as an optimisation, we ignore
7688 * cookies shorter than the declared name.
7689 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7690 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7691 (val_end - att_beg >= sess->fe->capture_namelen) &&
7692 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7693 int log_len = val_end - att_beg;
7694
7695 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7696 Alert("HTTP logging : out of memory.\n");
7697 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7698 if (log_len > sess->fe->capture_len)
7699 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7700 memcpy(txn->cli_cookie, att_beg, log_len);
7701 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7702 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7703 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7704
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7705 /* Persistence cookies in passive, rewrite or insert mode have the
7706 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7707 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7708 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7709 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7710 * For cookies in prefix mode, the form is :
7711 *
7712 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7713 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7714 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7715 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7716 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7717 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7718
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7719 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7720 * have the server ID between val_beg and delim, and the original cookie between
7721 * delim+1 and val_end. Otherwise, delim==val_end :
7722 *
7723 * Cookie: NAME=SRV; # in all but prefix modes
7724 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7725 * | || || | |+-> next
7726 * | || || | +--> val_end
7727 * | || || +---------> delim
7728 * | || |+------------> val_beg
7729 * | || +-------------> att_end = equal
7730 * | |+-----------------> att_beg
7731 * | +------------------> prev
7732 * +-------------------------> hdr_beg
7733 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7734
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7735 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7736 for (delim = val_beg; delim < val_end; delim++)
7737 if (*delim == COOKIE_DELIM)
7738 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7739 } else {
7740 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7741 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7742 /* Now check if the cookie contains a date field, which would
7743 * appear after a vertical bar ('|') just after the server name
7744 * and before the delimiter.
7745 */
7746 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7747 if (vbar1) {
7748 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7749 * right is the last seen date. It is a base64 encoded
7750 * 30-bit value representing the UNIX date since the
7751 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7752 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7753 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7754 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7755 if (val_end - vbar1 >= 5) {
7756 val = b64tos30(vbar1);
7757 if (val > 0)
7758 txn->cookie_last_date = val << 2;
7759 }
7760 /* look for a second vertical bar */
7761 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7762 if (vbar1 && (val_end - vbar1 > 5)) {
7763 val = b64tos30(vbar1 + 1);
7764 if (val > 0)
7765 txn->cookie_first_date = val << 2;
7766 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7767 }
7768 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7769
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7770 /* if the cookie has an expiration date and the proxy wants to check
7771 * it, then we do that now. We first check if the cookie is too old,
7772 * then only if it has expired. We detect strict overflow because the
7773 * time resolution here is not great (4 seconds). Cookies with dates
7774 * in the future are ignored if their offset is beyond one day. This
7775 * allows an admin to fix timezone issues without expiring everyone
7776 * and at the same time avoids keeping unwanted side effects for too
7777 * long.
7778 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7779 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7780 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7781 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7782 txn->flags &= ~TX_CK_MASK;
7783 txn->flags |= TX_CK_OLD;
7784 delim = val_beg; // let's pretend we have not found the cookie
7785 txn->cookie_first_date = 0;
7786 txn->cookie_last_date = 0;
7787 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7788 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7789 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7790 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7791 txn->flags &= ~TX_CK_MASK;
7792 txn->flags |= TX_CK_EXPIRED;
7793 delim = val_beg; // let's pretend we have not found the cookie
7794 txn->cookie_first_date = 0;
7795 txn->cookie_last_date = 0;
7796 }
7797
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7798 /* Here, we'll look for the first running server which supports the cookie.
7799 * This allows to share a same cookie between several servers, for example
7800 * to dedicate backup servers to specific servers only.
7801 * However, to prevent clients from sticking to cookie-less backup server
7802 * when they have incidentely learned an empty cookie, we simply ignore
7803 * empty cookies and mark them as invalid.
7804 * The same behaviour is applied when persistence must be ignored.
7805 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7806 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7807 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7808
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7809 while (srv) {
7810 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7811 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7812 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7813 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7814 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7815 /* we found the server and we can use it */
7816 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7817 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7818 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7819 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7820 break;
7821 } else {
7822 /* we found a server, but it's down,
7823 * mark it as such and go on in case
7824 * another one is available.
7825 */
7826 txn->flags &= ~TX_CK_MASK;
7827 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7828 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7829 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7830 srv = srv->next;
7831 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7832
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7833 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7834 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7835 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7836 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7837 txn->flags |= TX_CK_UNUSED;
7838 else
7839 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7840 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7841
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7842 /* depending on the cookie mode, we may have to either :
7843 * - delete the complete cookie if we're in insert+indirect mode, so that
7844 * the server never sees it ;
7845 * - remove the server id from the cookie value, and tag the cookie as an
7846 * application cookie so that it does not get accidentely removed later,
7847 * if we're in cookie prefix mode
7848 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7849 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7850 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7851
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7852 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7853 val_end += delta;
7854 next += delta;
7855 hdr_end += delta;
7856 hdr_next += delta;
7857 cur_hdr->len += delta;
7858 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7859
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7860 del_from = NULL;
7861 preserve_hdr = 1; /* we want to keep this cookie */
7862 }
7863 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7864 (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]7865 del_from = prev;
7866 }
7867 } else {
7868 /* This is not our cookie, so we must preserve it. But if we already
7869 * scheduled another cookie for removal, we cannot remove the
7870 * complete header, but we can remove the previous block itself.
7871 */
7872 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7873
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7874 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7875 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7876 if (att_beg >= del_from)
7877 att_beg += delta;
7878 if (att_end >= del_from)
7879 att_end += delta;
7880 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7881 val_end += delta;
7882 next += delta;
7883 hdr_end += delta;
7884 hdr_next += delta;
7885 cur_hdr->len += delta;
7886 http_msg_move_end(&txn->req, delta);
7887 prev = del_from;
7888 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7889 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7890 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7891
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7892 /* Look for the appsession cookie unless persistence must be ignored */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7893 if (!(s->flags & SF_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7894 int cmp_len, value_len;
7895 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7896
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7897 if (s->be->options2 & PR_O2_AS_PFX) {
7898 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
7899 value_begin = att_beg + s->be->appsession_name_len;
7900 value_len = val_end - att_beg - s->be->appsession_name_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7901 } else {
7902 cmp_len = att_end - att_beg;
7903 value_begin = val_beg;
7904 value_len = val_end - val_beg;
7905 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7906
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7907 /* let's see if the cookie is our appcookie */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7908 if (cmp_len == s->be->appsession_name_len &&
7909 memcmp(att_beg, s->be->appsession_name, cmp_len) == 0) {
7910 manage_client_side_appsession(s, value_begin, value_len);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7911 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7912 }
7913
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7914 /* continue with next cookie on this header line */
7915 att_beg = next;
7916 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7917
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7918 /* There are no more cookies on this line.
7919 * We may still have one (or several) marked for deletion at the
7920 * end of the line. We must do this now in two ways :
7921 * - if some cookies must be preserved, we only delete from the
7922 * mark to the end of line ;
7923 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7924 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7925 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7926 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7927 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7928 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7929 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7930 cur_hdr->len += delta;
7931 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7932 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7933
7934 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7935 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7936 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7937 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7938 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7939 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7940 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7941 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7942 }
7943
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7944 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7945 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7946 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7947}
7948
7949
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7950/* Iterate the same filter through all response headers contained in <rtr>.
7951 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7952 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7953int 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]7954{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7955 char *cur_ptr, *cur_end, *cur_next;
7956 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7957 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7958 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7959 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7960
7961 last_hdr = 0;
7962
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7963 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7964 old_idx = 0;
7965
7966 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7967 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7968 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7969 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7970 (exp->action == ACT_ALLOW ||
7971 exp->action == ACT_DENY))
7972 return 0;
7973
7974 cur_idx = txn->hdr_idx.v[old_idx].next;
7975 if (!cur_idx)
7976 break;
7977
7978 cur_hdr = &txn->hdr_idx.v[cur_idx];
7979 cur_ptr = cur_next;
7980 cur_end = cur_ptr + cur_hdr->len;
7981 cur_next = cur_end + cur_hdr->cr + 1;
7982
7983 /* Now we have one header between cur_ptr and cur_end,
7984 * and the next header starts at cur_next.
7985 */
7986
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7987 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]7988 switch (exp->action) {
7989 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7990 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7991 last_hdr = 1;
7992 break;
7993
7994 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7995 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7996 last_hdr = 1;
7997 break;
7998
7999 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8000 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8001 if (trash.len < 0)
8002 return -1;
8003
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8004 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8005 /* FIXME: if the user adds a newline in the replacement, the
8006 * index will not be recalculated for now, and the new line
8007 * will not be counted as a new header.
8008 */
8009
8010 cur_end += delta;
8011 cur_next += delta;
8012 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8013 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8014 break;
8015
8016 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8017 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8018 cur_next += delta;
8019
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8020 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8021 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8022 txn->hdr_idx.used--;
8023 cur_hdr->len = 0;
8024 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8025 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8026 break;
8027
8028 }
8029 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8030
8031 /* keep the link from this header to next one in case of later
8032 * removal of next header.
8033 */
8034 old_idx = cur_idx;
8035 }
8036 return 0;
8037}
8038
8039
8040/* Apply the filter to the status line in the response buffer <rtr>.
8041 * Returns 0 if nothing has been done, 1 if the filter has been applied,
8042 * or -1 if a replacement resulted in an invalid status line.
8043 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8044int 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]8045{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8046 char *cur_ptr, *cur_end;
8047 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8048 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8049 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8050
8051
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8052 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8053 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8054 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8055 (exp->action == ACT_ALLOW ||
8056 exp->action == ACT_DENY))
8057 return 0;
8058 else if (exp->action == ACT_REMOVE)
8059 return 0;
8060
8061 done = 0;
8062
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8063 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]8064 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8065
8066 /* Now we have the status line between cur_ptr and cur_end */
8067
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8068 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]8069 switch (exp->action) {
8070 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8071 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8072 done = 1;
8073 break;
8074
8075 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8076 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8077 done = 1;
8078 break;
8079
8080 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8081 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8082 if (trash.len < 0)
8083 return -1;
8084
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8085 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8086 /* FIXME: if the user adds a newline in the replacement, the
8087 * index will not be recalculated for now, and the new line
8088 * will not be counted as a new header.
8089 */
8090
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8091 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8092 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8093 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]8094 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8095 cur_ptr, cur_end + 1,
8096 NULL, NULL);
8097 if (unlikely(!cur_end))
8098 return -1;
8099
8100 /* we have a full respnse and we know that we have either a CR
8101 * or an LF at <ptr>.
8102 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8103 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]8104 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]8105 /* there is no point trying this regex on headers */
8106 return 1;
8107 }
8108 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8109 return done;
8110}
8111
8112
8113
8114/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8115 * 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]8116 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
8117 * unparsable response.
8118 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8119int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8120{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8121 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8122 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8123 struct hdr_exp *exp;
8124
8125 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8126 int ret;
8127
8128 /*
8129 * The interleaving of transformations and verdicts
8130 * makes it difficult to decide to continue or stop
8131 * the evaluation.
8132 */
8133
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8134 if (txn->flags & TX_SVDENY)
8135 break;
8136
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8137 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8138 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
8139 exp->action == ACT_PASS)) {
8140 exp = exp->next;
8141 continue;
8142 }
8143
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8144 /* if this filter had a condition, evaluate it now and skip to
8145 * next filter if the condition does not match.
8146 */
8147 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8148 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]8149 ret = acl_pass(ret);
8150 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
8151 ret = !ret;
8152 if (!ret)
8153 continue;
8154 }
8155
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8156 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8157 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8158 if (unlikely(ret < 0))
8159 return -1;
8160
8161 if (likely(ret == 0)) {
8162 /* The filter did not match the response, it can be
8163 * iterated through all headers.
8164 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8165 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
8166 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8167 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8168 }
8169 return 0;
8170}
8171
8172
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8173/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]8174 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8175 * desirable to call it only when needed. This function is also used when we
8176 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8177 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8178void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8179{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8180 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8181 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8182 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8183 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8184 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8185 char *hdr_beg, *hdr_end, *hdr_next;
8186 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8187
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8188 /* Iterate through the headers.
8189 * we start with the start line.
8190 */
8191 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8192 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8193
8194 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
8195 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8196 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8197
8198 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8199 hdr_beg = hdr_next;
8200 hdr_end = hdr_beg + cur_hdr->len;
8201 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8202
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8203 /* We have one full header between hdr_beg and hdr_end, and the
8204 * next header starts at hdr_next. We're only interested in
8205 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8206 */
8207
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8208 is_cookie2 = 0;
8209 prev = hdr_beg + 10;
8210 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8211 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8212 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
8213 if (!val) {
8214 old_idx = cur_idx;
8215 continue;
8216 }
8217 is_cookie2 = 1;
8218 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8219 }
8220
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8221 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8222 * <prev> points to the colon.
8223 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8224 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8225
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8226 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8227 * check-cache is enabled) and we are not interested in checking
8228 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8229 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8230 if (s->be->cookie_name == NULL &&
8231 s->be->appsession_name == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8232 sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8233 return;
8234
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8235 /* OK so now we know we have to process this response cookie.
8236 * The format of the Set-Cookie header is slightly different
8237 * from the format of the Cookie header in that it does not
8238 * support the comma as a cookie delimiter (thus the header
8239 * cannot be folded) because the Expires attribute described in
8240 * the original Netscape's spec may contain an unquoted date
8241 * with a comma inside. We have to live with this because
8242 * many browsers don't support Max-Age and some browsers don't
8243 * support quoted strings. However the Set-Cookie2 header is
8244 * clean.
8245 *
8246 * We have to keep multiple pointers in order to support cookie
8247 * removal at the beginning, middle or end of header without
8248 * corrupting the header (in case of set-cookie2). A special
8249 * pointer, <scav> points to the beginning of the set-cookie-av
8250 * fields after the first semi-colon. The <next> pointer points
8251 * either to the end of line (set-cookie) or next unquoted comma
8252 * (set-cookie2). All of these headers are valid :
8253 *
8254 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8255 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8256 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8257 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8258 * | | | | | | | | | |
8259 * | | | | | | | | +-> next hdr_end <--+
8260 * | | | | | | | +------------> scav
8261 * | | | | | | +--------------> val_end
8262 * | | | | | +--------------------> val_beg
8263 * | | | | +----------------------> equal
8264 * | | | +------------------------> att_end
8265 * | | +----------------------------> att_beg
8266 * | +------------------------------> prev
8267 * +-----------------------------------------> hdr_beg
8268 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8269
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8270 for (; prev < hdr_end; prev = next) {
8271 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8272
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8273 /* find att_beg */
8274 att_beg = prev + 1;
8275 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8276 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8277
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8278 /* find att_end : this is the first character after the last non
8279 * space before the equal. It may be equal to hdr_end.
8280 */
8281 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8282
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8283 while (equal < hdr_end) {
8284 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8285 break;
8286 if (http_is_spht[(unsigned char)*equal++])
8287 continue;
8288 att_end = equal;
8289 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8290
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8291 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8292 * is between <att_beg> and <equal>, both may be identical.
8293 */
8294
8295 /* look for end of cookie if there is an equal sign */
8296 if (equal < hdr_end && *equal == '=') {
8297 /* look for the beginning of the value */
8298 val_beg = equal + 1;
8299 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8300 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8301
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8302 /* find the end of the value, respecting quotes */
8303 next = find_cookie_value_end(val_beg, hdr_end);
8304
8305 /* make val_end point to the first white space or delimitor after the value */
8306 val_end = next;
8307 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8308 val_end--;
8309 } else {
8310 /* <equal> points to next comma, semi-colon or EOL */
8311 val_beg = val_end = next = equal;
8312 }
8313
8314 if (next < hdr_end) {
8315 /* Set-Cookie2 supports multiple cookies, and <next> points to
8316 * a colon or semi-colon before the end. So skip all attr-value
8317 * pairs and look for the next comma. For Set-Cookie, since
8318 * commas are permitted in values, skip to the end.
8319 */
8320 if (is_cookie2)
8321 next = find_hdr_value_end(next, hdr_end);
8322 else
8323 next = hdr_end;
8324 }
8325
8326 /* Now everything is as on the diagram above */
8327
8328 /* Ignore cookies with no equal sign */
8329 if (equal == val_end)
8330 continue;
8331
8332 /* If there are spaces around the equal sign, we need to
8333 * strip them otherwise we'll get trouble for cookie captures,
8334 * or even for rewrites. Since this happens extremely rarely,
8335 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8336 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8337 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8338 int stripped_before = 0;
8339 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8340
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8341 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8342 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8343 equal += stripped_before;
8344 val_beg += stripped_before;
8345 }
8346
8347 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8348 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8349 val_beg += stripped_after;
8350 stripped_before += stripped_after;
8351 }
8352
8353 val_end += stripped_before;
8354 next += stripped_before;
8355 hdr_end += stripped_before;
8356 hdr_next += stripped_before;
8357 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8358 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8359 }
8360
8361 /* First, let's see if we want to capture this cookie. We check
8362 * that we don't already have a server side cookie, because we
8363 * can only capture one. Also as an optimisation, we ignore
8364 * cookies shorter than the declared name.
8365 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8366 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8367 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8368 (val_end - att_beg >= sess->fe->capture_namelen) &&
8369 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8370 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8371 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8372 Alert("HTTP logging : out of memory.\n");
8373 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8374 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8375 if (log_len > sess->fe->capture_len)
8376 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8377 memcpy(txn->srv_cookie, att_beg, log_len);
8378 txn->srv_cookie[log_len] = 0;
8379 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8380 }
8381
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8382 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8383 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8384 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8385 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8386 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8387 /* assume passive cookie by default */
8388 txn->flags &= ~TX_SCK_MASK;
8389 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8390
8391 /* If the cookie is in insert mode on a known server, we'll delete
8392 * this occurrence because we'll insert another one later.
8393 * 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]8394 * a direct access.
8395 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8396 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8397 /* The "preserve" flag was set, we don't want to touch the
8398 * server's cookie.
8399 */
8400 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8401 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8402 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8403 /* this cookie must be deleted */
8404 if (*prev == ':' && next == hdr_end) {
8405 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8406 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8407 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8408 txn->hdr_idx.used--;
8409 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8410 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8411 hdr_next += delta;
8412 http_msg_move_end(&txn->rsp, delta);
8413 /* note: while both invalid now, <next> and <hdr_end>
8414 * are still equal, so the for() will stop as expected.
8415 */
8416 } else {
8417 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8418 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8419 next = prev;
8420 hdr_end += delta;
8421 hdr_next += delta;
8422 cur_hdr->len += delta;
8423 http_msg_move_end(&txn->rsp, delta);
8424 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8425 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8426 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8427 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8428 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8429 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8430 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8431 * with this server since we know it.
8432 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8433 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8434 next += delta;
8435 hdr_end += delta;
8436 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8437 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8438 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8439
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8440 txn->flags &= ~TX_SCK_MASK;
8441 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8442 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8443 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8444 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8445 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8446 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8447 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8448 next += delta;
8449 hdr_end += delta;
8450 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8451 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8452 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8453
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8454 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8455 txn->flags &= ~TX_SCK_MASK;
8456 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8457 }
8458 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]8459 /* 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]8460 else if (!(s->flags & SF_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8461 int cmp_len, value_len;
8462 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8463
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8464 if (s->be->options2 & PR_O2_AS_PFX) {
8465 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
8466 value_begin = att_beg + s->be->appsession_name_len;
8467 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]8468 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8469 cmp_len = att_end - att_beg;
8470 value_begin = val_beg;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8471 value_len = MIN(s->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8472 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8473
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8474 if ((cmp_len == s->be->appsession_name_len) &&
8475 (memcmp(att_beg, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8476 /* free a possibly previously allocated memory */
8477 pool_free2(apools.sessid, txn->sessid);
8478
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8479 /* Store the sessid in the stream for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8480 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8481 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8482 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]8483 return;
8484 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8485 memcpy(txn->sessid, value_begin, value_len);
8486 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8487 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8488 }
8489 /* that's done for this cookie, check the next one on the same
8490 * line when next != hdr_end (only if is_cookie2).
8491 */
8492 }
8493 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8494 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8495 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8496
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8497 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8498 appsess *asession = NULL;
8499 /* only do insert, if lookup fails */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8500 asession = appsession_hash_lookup(&(s->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8501 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]8502 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8503 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
8504 Alert("Not enough Memory process_srv():asession:calloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8505 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8506 return;
8507 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8508 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
8509
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8510 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
8511 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8512 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8513 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8514 return;
8515 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8516 memcpy(asession->sessid, txn->sessid, s->be->appsession_len);
8517 asession->sessid[s->be->appsession_len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8518
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8519 server_id_len = strlen(objt_server(s->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8520 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8521 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8522 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8523 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8524 return;
8525 }
8526 asession->serverid[0] = '\0';
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8527 memcpy(asession->serverid, objt_server(s->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8528
8529 asession->request_count = 0;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8530 appsession_hash_insert(&(s->be->htbl_proxy), asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8531 }
8532
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8533 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8534 asession->request_count++;
8535 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8536}
8537
8538
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8539/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8540 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8541 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8542void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8543{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8544 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8545 char *p1, *p2;
8546
8547 char *cur_ptr, *cur_end, *cur_next;
8548 int cur_idx;
8549
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8550 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8551 return;
8552
8553 /* Iterate through the headers.
8554 * we start with the start line.
8555 */
8556 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8557 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8558
8559 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8560 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8561 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8562
8563 cur_hdr = &txn->hdr_idx.v[cur_idx];
8564 cur_ptr = cur_next;
8565 cur_end = cur_ptr + cur_hdr->len;
8566 cur_next = cur_end + cur_hdr->cr + 1;
8567
8568 /* We have one full header between cur_ptr and cur_end, and the
8569 * next header starts at cur_next. We're only interested in
8570 * "Cookie:" headers.
8571 */
8572
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8573 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8574 if (val) {
8575 if ((cur_end - (cur_ptr + val) >= 8) &&
8576 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8577 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8578 return;
8579 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8580 }
8581
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8582 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8583 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8584 continue;
8585
8586 /* OK, right now we know we have a cache-control header at cur_ptr */
8587
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8588 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8589
8590 if (p1 >= cur_end) /* no more info */
8591 continue;
8592
8593 /* p1 is at the beginning of the value */
8594 p2 = p1;
8595
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8596 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8597 p2++;
8598
8599 /* we have a complete value between p1 and p2 */
8600 if (p2 < cur_end && *p2 == '=') {
8601 /* we have something of the form no-cache="set-cookie" */
8602 if ((cur_end - p1 >= 21) &&
8603 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8604 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8605 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8606 continue;
8607 }
8608
8609 /* OK, so we know that either p2 points to the end of string or to a comma */
8610 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8611 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8612 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8613 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8614 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8615 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8616 return;
8617 }
8618
8619 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8620 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8621 continue;
8622 }
8623 }
8624}
8625
8626
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8627/*
8628 * Try to retrieve a known appsession in the URI, then the associated server.
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8629 * If the server is found, it's assigned to the stream.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8630 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8631void get_srv_from_appsession(struct stream *s, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8632{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8633 char *end_params, *first_param, *cur_param, *next_param;
8634 char separator;
8635 int value_len;
8636
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8637 int mode = s->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8638
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8639 if (s->be->appsession_name == NULL ||
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8640 (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]8641 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8642 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8643
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8644 first_param = NULL;
8645 switch (mode) {
8646 case PR_O2_AS_M_PP:
8647 first_param = memchr(begin, ';', len);
8648 break;
8649 case PR_O2_AS_M_QS:
8650 first_param = memchr(begin, '?', len);
8651 break;
8652 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8653
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8654 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8655 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8656 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8657
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8658 switch (mode) {
8659 case PR_O2_AS_M_PP:
8660 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
8661 end_params = (char *) begin + len;
8662 }
8663 separator = ';';
8664 break;
8665 case PR_O2_AS_M_QS:
8666 end_params = (char *) begin + len;
8667 separator = '&';
8668 break;
8669 default:
8670 /* unknown mode, shouldn't happen */
8671 return;
8672 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8673
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8674 cur_param = next_param = end_params;
8675 while (cur_param > first_param) {
8676 cur_param--;
8677 if ((cur_param[0] == separator) || (cur_param == first_param)) {
8678 /* let's see if this is the appsession parameter */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8679 if ((cur_param + s->be->appsession_name_len + 1 < next_param) &&
8680 ((s->be->options2 & PR_O2_AS_PFX) || cur_param[s->be->appsession_name_len + 1] == '=') &&
8681 (strncasecmp(cur_param + 1, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8682 /* Cool... it's the right one */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8683 cur_param += s->be->appsession_name_len + (s->be->options2 & PR_O2_AS_PFX ? 1 : 2);
8684 value_len = MIN(s->be->appsession_len, next_param - cur_param);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8685 if (value_len > 0) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8686 manage_client_side_appsession(s, cur_param, value_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8687 }
8688 break;
8689 }
8690 next_param = cur_param;
8691 }
8692 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8693#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]8694 Alert("get_srv_from_appsession\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8695 appsession_hash_dump(&(s->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8696#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8697}
8698
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8699/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8700 * 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]8701 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8702 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8703 * 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]8704 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8705 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8706 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8707 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8708int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8709{
8710 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8711 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8712 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8713
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8714 if (!uri_auth)
8715 return 0;
8716
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8717 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]8718 return 0;
8719
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8720 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8721 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8722 return 0;
8723
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8724 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8725 return 0;
8726
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8727 return 1;
8728}
8729
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8730/*
8731 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8732 * By default it tries to report the error position as msg->err_pos. However if
8733 * this one is not set, it will then report msg->next, which is the last known
8734 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8735 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8736 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8737void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8738 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8739 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8740{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8741 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8742 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8743 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8744
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8745 es->len = MIN(chn->buf->i, sizeof(es->buf));
8746 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8747 len1 = MIN(len1, es->len);
8748 len2 = es->len - len1; /* remaining data if buffer wraps */
8749
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8750 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8751 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8752 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8753
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8754 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8755 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8756 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8757 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8758
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8759 es->when = date; // user-visible date
8760 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8761 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8762 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8763 if (objt_conn(sess->origin))
8764 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8765 else
8766 memset(&es->src, 0, sizeof(es->src));
8767
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8768 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8769 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8770 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8771 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8772 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8773 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8774 es->b_out = chn->buf->o;
8775 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8776 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8777 es->m_clen = msg->chunk_len;
8778 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8779}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8780
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8781/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8782 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8783 * performed over the whole headers. Otherwise it must contain a valid header
8784 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8785 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8786 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8787 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8788 * -1. The value fetch stops at commas, so this function is suited for use with
8789 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8790 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8791 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8792unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8793 struct hdr_idx *idx, int occ,
8794 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8795{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8796 struct hdr_ctx local_ctx;
8797 char *ptr_hist[MAX_HDR_HISTORY];
8798 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8799 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8800 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8801
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8802 if (!ctx) {
8803 local_ctx.idx = 0;
8804 ctx = &local_ctx;
8805 }
8806
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8807 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8808 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8809 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8810 occ--;
8811 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8812 *vptr = ctx->line + ctx->val;
8813 *vlen = ctx->vlen;
8814 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8815 }
8816 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8817 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8818 }
8819
8820 /* negative occurrence, we scan all the list then walk back */
8821 if (-occ > MAX_HDR_HISTORY)
8822 return 0;
8823
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8824 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8825 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8826 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8827 len_hist[hist_ptr] = ctx->vlen;
8828 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8829 hist_ptr = 0;
8830 found++;
8831 }
8832 if (-occ > found)
8833 return 0;
8834 /* 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]8835 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8836 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8837 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8838 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8839 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8840 if (hist_ptr >= MAX_HDR_HISTORY)
8841 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8842 *vptr = ptr_hist[hist_ptr];
8843 *vlen = len_hist[hist_ptr];
8844 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8845}
8846
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8847/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8848 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8849 * performed over the whole headers. Otherwise it must contain a valid header
8850 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8851 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8852 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8853 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8854 * -1. This function differs from http_get_hdr() in that it only returns full
8855 * line header values and does not stop at commas.
8856 * The return value is 0 if nothing was found, or non-zero otherwise.
8857 */
8858unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8859 struct hdr_idx *idx, int occ,
8860 struct hdr_ctx *ctx, char **vptr, int *vlen)
8861{
8862 struct hdr_ctx local_ctx;
8863 char *ptr_hist[MAX_HDR_HISTORY];
8864 int len_hist[MAX_HDR_HISTORY];
8865 unsigned int hist_ptr;
8866 int found;
8867
8868 if (!ctx) {
8869 local_ctx.idx = 0;
8870 ctx = &local_ctx;
8871 }
8872
8873 if (occ >= 0) {
8874 /* search from the beginning */
8875 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8876 occ--;
8877 if (occ <= 0) {
8878 *vptr = ctx->line + ctx->val;
8879 *vlen = ctx->vlen;
8880 return 1;
8881 }
8882 }
8883 return 0;
8884 }
8885
8886 /* negative occurrence, we scan all the list then walk back */
8887 if (-occ > MAX_HDR_HISTORY)
8888 return 0;
8889
8890 found = hist_ptr = 0;
8891 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8892 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8893 len_hist[hist_ptr] = ctx->vlen;
8894 if (++hist_ptr >= MAX_HDR_HISTORY)
8895 hist_ptr = 0;
8896 found++;
8897 }
8898 if (-occ > found)
8899 return 0;
8900 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8901 * find occurrence -occ, so we have to check [hist_ptr+occ].
8902 */
8903 hist_ptr += occ;
8904 if (hist_ptr >= MAX_HDR_HISTORY)
8905 hist_ptr -= MAX_HDR_HISTORY;
8906 *vptr = ptr_hist[hist_ptr];
8907 *vlen = len_hist[hist_ptr];
8908 return 1;
8909}
8910
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8911/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8912 * Print a debug line with a header. Always stop at the first CR or LF char,
8913 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8914 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8915 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8916void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8917{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8918 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8919 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8920
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8921 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8922 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8923 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8924 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]8925
8926 for (max = 0; start + max < end; max++)
8927 if (start[max] == '\r' || start[max] == '\n')
8928 break;
8929
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8930 UBOUND(max, trash.size - trash.len - 3);
8931 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8932 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8933 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8934}
8935
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8936
8937/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8938 * The hdr_idx is allocated as well. In case of allocation failure, everything
8939 * allocated is freed and NULL is returned. Otherwise the new transaction is
8940 * assigned to the stream and returned.
8941 */
8942struct http_txn *http_alloc_txn(struct stream *s)
8943{
8944 struct http_txn *txn = s->txn;
8945
8946 if (txn)
8947 return txn;
8948
8949 txn = pool_alloc2(pool2_http_txn);
8950 if (!txn)
8951 return txn;
8952
8953 txn->hdr_idx.size = global.tune.max_http_hdr;
8954 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8955 if (!txn->hdr_idx.v) {
8956 pool_free2(pool2_http_txn, txn);
8957 return NULL;
8958 }
8959
8960 s->txn = txn;
8961 return txn;
8962}
8963
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8964/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8965 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8966 * the required fields are properly allocated and that we only need to (re)init
8967 * them. This should be used before processing any new request.
8968 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8969void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8970{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8971 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8972 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8973
8974 txn->flags = 0;
8975 txn->status = -1;
8976
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8977 txn->cookie_first_date = 0;
8978 txn->cookie_last_date = 0;
8979
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8980 txn->sessid = NULL;
8981 txn->srv_cookie = NULL;
8982 txn->cli_cookie = NULL;
8983 txn->uri = NULL;
8984
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8985 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8986 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8987 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8988 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8989 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8990 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8991 txn->req.chunk_len = 0LL;
8992 txn->req.body_len = 0LL;
8993 txn->rsp.chunk_len = 0LL;
8994 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8995 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8996 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]8997 txn->req.chn = &s->req;
8998 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8999
9000 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9001
9002 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
9003 if (fe->options2 & PR_O2_REQBUG_OK)
9004 txn->req.err_pos = -1; /* let buggy requests pass */
9005
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9006 if (txn->hdr_idx.v)
9007 hdr_idx_init(&txn->hdr_idx);
9008}
9009
9010/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9011void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9012{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]9013 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9014 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9015
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9016 /* release any possible compression context */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9017 if (s->flags & SF_COMP_READY)
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9018 s->comp_algo->end(&s->comp_ctx);
9019 s->comp_algo = NULL;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9020 s->flags &= ~SF_COMP_READY;
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9021
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9022 /* these ones will have been dynamically allocated */
9023 pool_free2(pool2_requri, txn->uri);
9024 pool_free2(pool2_capture, txn->cli_cookie);
9025 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]9026 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]9027 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9028
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]9029 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]9030 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9031 txn->uri = NULL;
9032 txn->srv_cookie = NULL;
9033 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9034
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9035 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9036 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]9037 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9038 pool_free2(h->pool, s->req_cap[h->index]);
9039 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9040 }
9041
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9042 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9043 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]9044 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9045 pool_free2(h->pool, s->res_cap[h->index]);
9046 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9047 }
9048
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9049}
9050
9051/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9052void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9053{
9054 http_end_txn(s);
9055 http_init_txn(s);
9056
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]9057 /* reinitialise the current rule list pointer to NULL. We are sure that
9058 * any rulelist match the NULL pointer.
9059 */
9060 s->current_rule_list = NULL;
9061
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9062 s->be = strm_fe(s);
9063 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]9064 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9065 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]9066 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]9067 /* re-init store persistence */
9068 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]9069 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]9070
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9071 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9072
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9073 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9074
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]9075 /* We must trim any excess data from the response buffer, because we
9076 * may have blocked an invalid response from a server that we don't
9077 * want to accidentely forward once we disable the analysers, nor do
9078 * we want those data to come along with next response. A typical
9079 * example of such data would be from a buggy server responding to
9080 * a HEAD with some data, or sending more than the advertised
9081 * content-length.
9082 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9083 if (unlikely(s->res.buf->i))
9084 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]9085
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9086 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9087 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9088
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9089 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9090 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9091
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9092 s->req.rex = TICK_ETERNITY;
9093 s->req.wex = TICK_ETERNITY;
9094 s->req.analyse_exp = TICK_ETERNITY;
9095 s->res.rex = TICK_ETERNITY;
9096 s->res.wex = TICK_ETERNITY;
9097 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9098}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9099
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9100void free_http_res_rules(struct list *r)
9101{
9102 struct http_res_rule *tr, *pr;
9103
9104 list_for_each_entry_safe(pr, tr, r, list) {
9105 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9106 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9107 free(pr);
9108 }
9109}
9110
9111void free_http_req_rules(struct list *r)
9112{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9113 struct http_req_rule *tr, *pr;
9114
9115 list_for_each_entry_safe(pr, tr, r, list) {
9116 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9117 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9118 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9119
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9120 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9121 free(pr);
9122 }
9123}
9124
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9125/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9126struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9127{
9128 struct http_req_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9129 struct http_req_action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9130 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9131 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9132
9133 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
9134 if (!rule) {
9135 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9136 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9137 }
9138
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9139 rule->deny_status = HTTP_ERR_403;
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9140 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9141 rule->action = HTTP_REQ_ACT_ALLOW;
9142 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]9143 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9144 int code;
9145 int hc;
9146
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9147 rule->action = HTTP_REQ_ACT_DENY;
9148 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9149 if (strcmp(args[cur_arg], "deny_status") == 0) {
9150 cur_arg++;
9151 if (!args[cur_arg]) {
9152 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
9153 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9154 goto out_err;
9155 }
9156
9157 code = atol(args[cur_arg]);
9158 cur_arg++;
9159 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
9160 if (http_err_codes[hc] == code) {
9161 rule->deny_status = hc;
9162 break;
9163 }
9164 }
9165
9166 if (hc >= HTTP_ERR_SIZE) {
9167 Warning("parsing [%s:%d] : status code %d not handled, using default code 403.\n",
9168 file, linenum, code);
9169 }
9170 }
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]9171 } else if (!strcmp(args[0], "tarpit")) {
9172 rule->action = HTTP_REQ_ACT_TARPIT;
9173 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9174 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9175 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9176 cur_arg = 1;
9177
9178 while(*args[cur_arg]) {
9179 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9180 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9181 cur_arg+=2;
9182 continue;
9183 } else
9184 break;
9185 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9186 } else if (!strcmp(args[0], "set-nice")) {
9187 rule->action = HTTP_REQ_ACT_SET_NICE;
9188 cur_arg = 1;
9189
9190 if (!*args[cur_arg] ||
9191 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9192 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
9193 file, linenum, args[0]);
9194 goto out_err;
9195 }
9196 rule->arg.nice = atoi(args[cur_arg]);
9197 if (rule->arg.nice < -1024)
9198 rule->arg.nice = -1024;
9199 else if (rule->arg.nice > 1024)
9200 rule->arg.nice = 1024;
9201 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9202 } else if (!strcmp(args[0], "set-tos")) {
9203#ifdef IP_TOS
9204 char *err;
9205 rule->action = HTTP_REQ_ACT_SET_TOS;
9206 cur_arg = 1;
9207
9208 if (!*args[cur_arg] ||
9209 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9210 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9211 file, linenum, args[0]);
9212 goto out_err;
9213 }
9214
9215 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9216 if (err && *err != '\0') {
9217 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9218 file, linenum, err, args[0]);
9219 goto out_err;
9220 }
9221 cur_arg++;
9222#else
9223 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9224 goto out_err;
9225#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9226 } else if (!strcmp(args[0], "set-mark")) {
9227#ifdef SO_MARK
9228 char *err;
9229 rule->action = HTTP_REQ_ACT_SET_MARK;
9230 cur_arg = 1;
9231
9232 if (!*args[cur_arg] ||
9233 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9234 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9235 file, linenum, args[0]);
9236 goto out_err;
9237 }
9238
9239 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9240 if (err && *err != '\0') {
9241 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9242 file, linenum, err, args[0]);
9243 goto out_err;
9244 }
9245 cur_arg++;
9246 global.last_checks |= LSTCHK_NETADM;
9247#else
9248 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9249 goto out_err;
9250#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9251 } else if (!strcmp(args[0], "set-log-level")) {
9252 rule->action = HTTP_REQ_ACT_SET_LOGL;
9253 cur_arg = 1;
9254
9255 if (!*args[cur_arg] ||
9256 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9257 bad_log_level:
9258 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
9259 file, linenum, args[0]);
9260 goto out_err;
9261 }
9262 if (strcmp(args[cur_arg], "silent") == 0)
9263 rule->arg.loglevel = -1;
9264 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
9265 goto bad_log_level;
9266 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9267 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9268 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
9269 cur_arg = 1;
9270
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]9271 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9272 (*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]9273 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9274 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9275 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9276 }
9277
9278 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9279 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9280 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]9281
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9282 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9283 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]9284 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9285 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9286 free(proxy->conf.lfs_file);
9287 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9288 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9289 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9290 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
9291 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]9292 cur_arg = 1;
9293
9294 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]9295 (*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]9296 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9297 file, linenum, args[0]);
9298 goto out_err;
9299 }
9300
9301 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9302 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9303 LIST_INIT(&rule->arg.hdr_add.fmt);
9304
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9305 error = NULL;
9306 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9307 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9308 args[cur_arg + 1], error);
9309 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9310 goto out_err;
9311 }
9312
9313 proxy->conf.args.ctx = ARGC_HRQ;
9314 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9315 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9316 file, linenum);
9317
9318 free(proxy->conf.lfs_file);
9319 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9320 proxy->conf.lfs_line = proxy->conf.args.line;
9321 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9322 } else if (strcmp(args[0], "del-header") == 0) {
9323 rule->action = HTTP_REQ_ACT_DEL_HDR;
9324 cur_arg = 1;
9325
9326 if (!*args[cur_arg] ||
9327 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9328 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9329 file, linenum, args[0]);
9330 goto out_err;
9331 }
9332
9333 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9334 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9335
9336 proxy->conf.args.ctx = ARGC_HRQ;
9337 free(proxy->conf.lfs_file);
9338 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9339 proxy->conf.lfs_line = proxy->conf.args.line;
9340 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9341 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9342 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9343 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9344 struct sample_expr *expr;
9345 unsigned int where;
9346 char *err = NULL;
9347
9348 cur_arg = 1;
9349 proxy->conf.args.ctx = ARGC_TRK;
9350
9351 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9352 if (!expr) {
9353 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9354 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9355 free(err);
9356 goto out_err;
9357 }
9358
9359 where = 0;
9360 if (proxy->cap & PR_CAP_FE)
9361 where |= SMP_VAL_FE_HRQ_HDR;
9362 if (proxy->cap & PR_CAP_BE)
9363 where |= SMP_VAL_BE_HRQ_HDR;
9364
9365 if (!(expr->fetch->val & where)) {
9366 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9367 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9368 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9369 args[cur_arg-1], sample_src_names(expr->fetch->use));
9370 free(expr);
9371 goto out_err;
9372 }
9373
9374 if (strcmp(args[cur_arg], "table") == 0) {
9375 cur_arg++;
9376 if (!args[cur_arg]) {
9377 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9378 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9379 free(expr);
9380 goto out_err;
9381 }
9382 /* we copy the table name for now, it will be resolved later */
9383 rule->act_prm.trk_ctr.table.n = strdup(args[cur_arg]);
9384 cur_arg++;
9385 }
9386 rule->act_prm.trk_ctr.expr = expr;
9387 rule->action = HTTP_REQ_ACT_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9388 } else if (strcmp(args[0], "redirect") == 0) {
9389 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9390 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9391
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9392 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 0)) == NULL) {
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9393 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9394 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9395 goto out_err;
9396 }
9397
9398 /* this redirect rule might already contain a parsed condition which
9399 * we'll pass to the http-request rule.
9400 */
9401 rule->action = HTTP_REQ_ACT_REDIR;
9402 rule->arg.redir = redir;
9403 rule->cond = redir->cond;
9404 redir->cond = NULL;
9405 cur_arg = 2;
9406 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9407 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9408 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9409 rule->action = HTTP_REQ_ACT_ADD_ACL;
9410 /*
9411 * '+ 8' for 'add-acl('
9412 * '- 9' for 'add-acl(' + trailing ')'
9413 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9414 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9415
9416 cur_arg = 1;
9417
9418 if (!*args[cur_arg] ||
9419 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9420 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9421 file, linenum, args[0]);
9422 goto out_err;
9423 }
9424
9425 LIST_INIT(&rule->arg.map.key);
9426 proxy->conf.args.ctx = ARGC_HRQ;
9427 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9428 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9429 file, linenum);
9430 free(proxy->conf.lfs_file);
9431 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9432 proxy->conf.lfs_line = proxy->conf.args.line;
9433 cur_arg += 1;
9434 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9435 /* http-request del-acl(<reference (acl name)>) <key pattern> */
9436 rule->action = HTTP_REQ_ACT_DEL_ACL;
9437 /*
9438 * '+ 8' for 'del-acl('
9439 * '- 9' for 'del-acl(' + trailing ')'
9440 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9441 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9442
9443 cur_arg = 1;
9444
9445 if (!*args[cur_arg] ||
9446 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9447 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9448 file, linenum, args[0]);
9449 goto out_err;
9450 }
9451
9452 LIST_INIT(&rule->arg.map.key);
9453 proxy->conf.args.ctx = ARGC_HRQ;
9454 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9455 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9456 file, linenum);
9457 free(proxy->conf.lfs_file);
9458 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9459 proxy->conf.lfs_line = proxy->conf.args.line;
9460 cur_arg += 1;
9461 } else if (strncmp(args[0], "del-map", 7) == 0) {
9462 /* http-request del-map(<reference (map name)>) <key pattern> */
9463 rule->action = HTTP_REQ_ACT_DEL_MAP;
9464 /*
9465 * '+ 8' for 'del-map('
9466 * '- 9' for 'del-map(' + trailing ')'
9467 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9468 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9469
9470 cur_arg = 1;
9471
9472 if (!*args[cur_arg] ||
9473 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9474 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9475 file, linenum, args[0]);
9476 goto out_err;
9477 }
9478
9479 LIST_INIT(&rule->arg.map.key);
9480 proxy->conf.args.ctx = ARGC_HRQ;
9481 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9482 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9483 file, linenum);
9484 free(proxy->conf.lfs_file);
9485 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9486 proxy->conf.lfs_line = proxy->conf.args.line;
9487 cur_arg += 1;
9488 } else if (strncmp(args[0], "set-map", 7) == 0) {
9489 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
9490 rule->action = HTTP_REQ_ACT_SET_MAP;
9491 /*
9492 * '+ 8' for 'set-map('
9493 * '- 9' for 'set-map(' + trailing ')'
9494 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9495 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9496
9497 cur_arg = 1;
9498
9499 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9500 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9501 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9502 file, linenum, args[0]);
9503 goto out_err;
9504 }
9505
9506 LIST_INIT(&rule->arg.map.key);
9507 LIST_INIT(&rule->arg.map.value);
9508 proxy->conf.args.ctx = ARGC_HRQ;
9509
9510 /* key pattern */
9511 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9512 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9513 file, linenum);
9514
9515 /* value pattern */
9516 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9517 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9518 file, linenum);
9519 free(proxy->conf.lfs_file);
9520 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9521 proxy->conf.lfs_line = proxy->conf.args.line;
9522
9523 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9524 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9525 char *errmsg = NULL;
9526 cur_arg = 1;
9527 /* try in the module list */
9528 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9529 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9530 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9531 free(errmsg);
9532 goto out_err;
9533 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9534 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9535 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]9536 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9537 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9538 }
9539
9540 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9541 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9542 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9543
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9544 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9545 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9546 file, linenum, args[0], errmsg);
9547 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9548 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9549 }
9550 rule->cond = cond;
9551 }
9552 else if (*args[cur_arg]) {
9553 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9554 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9555 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9556 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9557 }
9558
9559 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9560 out_err:
9561 free(rule);
9562 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9563}
9564
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9565/* parse an "http-respose" rule */
9566struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9567{
9568 struct http_res_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9569 struct http_res_action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9570 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9571 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9572
9573 rule = calloc(1, sizeof(*rule));
9574 if (!rule) {
9575 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9576 goto out_err;
9577 }
9578
9579 if (!strcmp(args[0], "allow")) {
9580 rule->action = HTTP_RES_ACT_ALLOW;
9581 cur_arg = 1;
9582 } else if (!strcmp(args[0], "deny")) {
9583 rule->action = HTTP_RES_ACT_DENY;
9584 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9585 } else if (!strcmp(args[0], "set-nice")) {
9586 rule->action = HTTP_RES_ACT_SET_NICE;
9587 cur_arg = 1;
9588
9589 if (!*args[cur_arg] ||
9590 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9591 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9592 file, linenum, args[0]);
9593 goto out_err;
9594 }
9595 rule->arg.nice = atoi(args[cur_arg]);
9596 if (rule->arg.nice < -1024)
9597 rule->arg.nice = -1024;
9598 else if (rule->arg.nice > 1024)
9599 rule->arg.nice = 1024;
9600 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9601 } else if (!strcmp(args[0], "set-tos")) {
9602#ifdef IP_TOS
9603 char *err;
9604 rule->action = HTTP_RES_ACT_SET_TOS;
9605 cur_arg = 1;
9606
9607 if (!*args[cur_arg] ||
9608 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9609 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9610 file, linenum, args[0]);
9611 goto out_err;
9612 }
9613
9614 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9615 if (err && *err != '\0') {
9616 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9617 file, linenum, err, args[0]);
9618 goto out_err;
9619 }
9620 cur_arg++;
9621#else
9622 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9623 goto out_err;
9624#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9625 } else if (!strcmp(args[0], "set-mark")) {
9626#ifdef SO_MARK
9627 char *err;
9628 rule->action = HTTP_RES_ACT_SET_MARK;
9629 cur_arg = 1;
9630
9631 if (!*args[cur_arg] ||
9632 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9633 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9634 file, linenum, args[0]);
9635 goto out_err;
9636 }
9637
9638 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9639 if (err && *err != '\0') {
9640 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9641 file, linenum, err, args[0]);
9642 goto out_err;
9643 }
9644 cur_arg++;
9645 global.last_checks |= LSTCHK_NETADM;
9646#else
9647 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9648 goto out_err;
9649#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9650 } else if (!strcmp(args[0], "set-log-level")) {
9651 rule->action = HTTP_RES_ACT_SET_LOGL;
9652 cur_arg = 1;
9653
9654 if (!*args[cur_arg] ||
9655 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9656 bad_log_level:
9657 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9658 file, linenum, args[0]);
9659 goto out_err;
9660 }
9661 if (strcmp(args[cur_arg], "silent") == 0)
9662 rule->arg.loglevel = -1;
9663 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9664 goto bad_log_level;
9665 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9666 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9667 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
9668 cur_arg = 1;
9669
9670 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9671 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9672 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9673 file, linenum, args[0]);
9674 goto out_err;
9675 }
9676
9677 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9678 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9679 LIST_INIT(&rule->arg.hdr_add.fmt);
9680
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9681 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9682 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]9683 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9684 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9685 free(proxy->conf.lfs_file);
9686 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9687 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9688 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9689 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9690 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]9691 cur_arg = 1;
9692
9693 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9694 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9695 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9696 file, linenum, args[0]);
9697 goto out_err;
9698 }
9699
9700 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9701 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9702 LIST_INIT(&rule->arg.hdr_add.fmt);
9703
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9704 error = NULL;
9705 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9706 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9707 args[cur_arg + 1], error);
9708 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9709 goto out_err;
9710 }
9711
9712 proxy->conf.args.ctx = ARGC_HRQ;
9713 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9714 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9715 file, linenum);
9716
9717 free(proxy->conf.lfs_file);
9718 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9719 proxy->conf.lfs_line = proxy->conf.args.line;
9720 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9721 } else if (strcmp(args[0], "del-header") == 0) {
9722 rule->action = HTTP_RES_ACT_DEL_HDR;
9723 cur_arg = 1;
9724
9725 if (!*args[cur_arg] ||
9726 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9727 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9728 file, linenum, args[0]);
9729 goto out_err;
9730 }
9731
9732 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9733 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9734
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9735 proxy->conf.args.ctx = ARGC_HRS;
9736 free(proxy->conf.lfs_file);
9737 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9738 proxy->conf.lfs_line = proxy->conf.args.line;
9739 cur_arg += 1;
9740 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9741 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9742 rule->action = HTTP_RES_ACT_ADD_ACL;
9743 /*
9744 * '+ 8' for 'add-acl('
9745 * '- 9' for 'add-acl(' + trailing ')'
9746 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9747 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9748
9749 cur_arg = 1;
9750
9751 if (!*args[cur_arg] ||
9752 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9753 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9754 file, linenum, args[0]);
9755 goto out_err;
9756 }
9757
9758 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9759 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9760 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9761 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9762 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9763 free(proxy->conf.lfs_file);
9764 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9765 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9766
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9767 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9768 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9769 /* http-response del-acl(<reference (acl name)>) <key pattern> */
9770 rule->action = HTTP_RES_ACT_DEL_ACL;
9771 /*
9772 * '+ 8' for 'del-acl('
9773 * '- 9' for 'del-acl(' + trailing ')'
9774 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9775 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9776
9777 cur_arg = 1;
9778
9779 if (!*args[cur_arg] ||
9780 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9781 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9782 file, linenum, args[0]);
9783 goto out_err;
9784 }
9785
9786 LIST_INIT(&rule->arg.map.key);
9787 proxy->conf.args.ctx = ARGC_HRS;
9788 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9789 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9790 file, linenum);
9791 free(proxy->conf.lfs_file);
9792 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9793 proxy->conf.lfs_line = proxy->conf.args.line;
9794 cur_arg += 1;
9795 } else if (strncmp(args[0], "del-map", 7) == 0) {
9796 /* http-response del-map(<reference (map name)>) <key pattern> */
9797 rule->action = HTTP_RES_ACT_DEL_MAP;
9798 /*
9799 * '+ 8' for 'del-map('
9800 * '- 9' for 'del-map(' + trailing ')'
9801 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9802 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9803
9804 cur_arg = 1;
9805
9806 if (!*args[cur_arg] ||
9807 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9808 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9809 file, linenum, args[0]);
9810 goto out_err;
9811 }
9812
9813 LIST_INIT(&rule->arg.map.key);
9814 proxy->conf.args.ctx = ARGC_HRS;
9815 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9816 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9817 file, linenum);
9818 free(proxy->conf.lfs_file);
9819 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9820 proxy->conf.lfs_line = proxy->conf.args.line;
9821 cur_arg += 1;
9822 } else if (strncmp(args[0], "set-map", 7) == 0) {
9823 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
9824 rule->action = HTTP_RES_ACT_SET_MAP;
9825 /*
9826 * '+ 8' for 'set-map('
9827 * '- 9' for 'set-map(' + trailing ')'
9828 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9829 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9830
9831 cur_arg = 1;
9832
9833 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9834 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9835 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9836 file, linenum, args[0]);
9837 goto out_err;
9838 }
9839
9840 LIST_INIT(&rule->arg.map.key);
9841 LIST_INIT(&rule->arg.map.value);
9842
9843 proxy->conf.args.ctx = ARGC_HRS;
9844
9845 /* key pattern */
9846 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9847 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9848 file, linenum);
9849
9850 /* value pattern */
9851 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9852 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9853 file, linenum);
9854
9855 free(proxy->conf.lfs_file);
9856 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9857 proxy->conf.lfs_line = proxy->conf.args.line;
9858
9859 cur_arg += 2;
Willy Tarreau51d861a2015-05-22 17:30:48 +0200[diff] [blame^]9860 } else if (strcmp(args[0], "redirect") == 0) {
9861 struct redirect_rule *redir;
9862 char *errmsg = NULL;
9863
9864 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1, 1)) == NULL) {
9865 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9866 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9867 goto out_err;
9868 }
9869
9870 /* this redirect rule might already contain a parsed condition which
9871 * we'll pass to the http-request rule.
9872 */
9873 rule->action = HTTP_RES_ACT_REDIR;
9874 rule->arg.redir = redir;
9875 rule->cond = redir->cond;
9876 redir->cond = NULL;
9877 cur_arg = 2;
9878 return rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9879 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9880 char *errmsg = NULL;
9881 cur_arg = 1;
9882 /* try in the module list */
9883 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9884 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9885 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9886 free(errmsg);
9887 goto out_err;
9888 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9889 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9890 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]9891 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
9892 goto out_err;
9893 }
9894
9895 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9896 struct acl_cond *cond;
9897 char *errmsg = NULL;
9898
9899 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9900 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9901 file, linenum, args[0], errmsg);
9902 free(errmsg);
9903 goto out_err;
9904 }
9905 rule->cond = cond;
9906 }
9907 else if (*args[cur_arg]) {
9908 Alert("parsing [%s:%d]: 'http-response %s' expects"
9909 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9910 file, linenum, args[0], args[cur_arg]);
9911 goto out_err;
9912 }
9913
9914 return rule;
9915 out_err:
9916 free(rule);
9917 return NULL;
9918}
9919
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9920/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9921 * with <err> filled with the error message. If <use_fmt> is not null, builds a
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9922 * dynamic log-format rule instead of a static string. Parameter <dir> indicates
9923 * the direction of the rule, and equals 0 for request, non-zero for responses.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9924 */
9925struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]9926 const char **args, char **errmsg, int use_fmt, int dir)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9927{
9928 struct redirect_rule *rule;
9929 int cur_arg;
9930 int type = REDIRECT_TYPE_NONE;
9931 int code = 302;
9932 const char *destination = NULL;
9933 const char *cookie = NULL;
9934 int cookie_set = 0;
9935 unsigned int flags = REDIRECT_FLAG_NONE;
9936 struct acl_cond *cond = NULL;
9937
9938 cur_arg = 0;
9939 while (*(args[cur_arg])) {
9940 if (strcmp(args[cur_arg], "location") == 0) {
9941 if (!*args[cur_arg + 1])
9942 goto missing_arg;
9943
9944 type = REDIRECT_TYPE_LOCATION;
9945 cur_arg++;
9946 destination = args[cur_arg];
9947 }
9948 else if (strcmp(args[cur_arg], "prefix") == 0) {
9949 if (!*args[cur_arg + 1])
9950 goto missing_arg;
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9951 type = REDIRECT_TYPE_PREFIX;
9952 cur_arg++;
9953 destination = args[cur_arg];
9954 }
9955 else if (strcmp(args[cur_arg], "scheme") == 0) {
9956 if (!*args[cur_arg + 1])
9957 goto missing_arg;
9958
9959 type = REDIRECT_TYPE_SCHEME;
9960 cur_arg++;
9961 destination = args[cur_arg];
9962 }
9963 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9964 if (!*args[cur_arg + 1])
9965 goto missing_arg;
9966
9967 cur_arg++;
9968 cookie = args[cur_arg];
9969 cookie_set = 1;
9970 }
9971 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9972 if (!*args[cur_arg + 1])
9973 goto missing_arg;
9974
9975 cur_arg++;
9976 cookie = args[cur_arg];
9977 cookie_set = 0;
9978 }
9979 else if (strcmp(args[cur_arg], "code") == 0) {
9980 if (!*args[cur_arg + 1])
9981 goto missing_arg;
9982
9983 cur_arg++;
9984 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9985 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9986 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9987 "'%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]9988 args[cur_arg - 1], args[cur_arg]);
9989 return NULL;
9990 }
9991 }
9992 else if (!strcmp(args[cur_arg],"drop-query")) {
9993 flags |= REDIRECT_FLAG_DROP_QS;
9994 }
9995 else if (!strcmp(args[cur_arg],"append-slash")) {
9996 flags |= REDIRECT_FLAG_APPEND_SLASH;
9997 }
9998 else if (strcmp(args[cur_arg], "if") == 0 ||
9999 strcmp(args[cur_arg], "unless") == 0) {
10000 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
10001 if (!cond) {
10002 memprintf(errmsg, "error in condition: %s", *errmsg);
10003 return NULL;
10004 }
10005 break;
10006 }
10007 else {
10008 memprintf(errmsg,
10009 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
10010 args[cur_arg]);
10011 return NULL;
10012 }
10013 cur_arg++;
10014 }
10015
10016 if (type == REDIRECT_TYPE_NONE) {
10017 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
10018 return NULL;
10019 }
10020
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]10021 if (dir && type != REDIRECT_TYPE_LOCATION) {
10022 memprintf(errmsg, "response only supports redirect type 'location'");
10023 return NULL;
10024 }
10025
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10026 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
10027 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]10028 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10029
10030 if (!use_fmt) {
10031 /* old-style static redirect rule */
10032 rule->rdr_str = strdup(destination);
10033 rule->rdr_len = strlen(destination);
10034 }
10035 else {
10036 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10037
10038 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
10039 * if prefix == "/", we don't want to add anything, otherwise it
10040 * makes it hard for the user to configure a self-redirection.
10041 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]10042 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10043 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]10044 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Willy Tarreaube4653b2015-05-28 15:26:58 +0200[diff] [blame]10045 dir ? (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRS_HDR : SMP_VAL_BE_HRS_HDR
10046 : (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]10047 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]10048 free(curproxy->conf.lfs_file);
10049 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
10050 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10051 }
10052 }
10053
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10054 if (cookie) {
10055 /* depending on cookie_set, either we want to set the cookie, or to clear it.
10056 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
10057 */
10058 rule->cookie_len = strlen(cookie);
10059 if (cookie_set) {
10060 rule->cookie_str = malloc(rule->cookie_len + 10);
10061 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10062 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
10063 rule->cookie_len += 9;
10064 } else {
10065 rule->cookie_str = malloc(rule->cookie_len + 21);
10066 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10067 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
10068 rule->cookie_len += 20;
10069 }
10070 }
10071 rule->type = type;
10072 rule->code = code;
10073 rule->flags = flags;
10074 LIST_INIT(&rule->list);
10075 return rule;
10076
10077 missing_arg:
10078 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
10079 return NULL;
10080}
10081
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10082/************************************************************************/
10083/* The code below is dedicated to ACL parsing and matching */
10084/************************************************************************/
10085
10086
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10087/* This function ensures that the prerequisites for an L7 fetch are ready,
10088 * which means that a request or response is ready. If some data is missing,
10089 * 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]10090 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
10091 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10092 *
10093 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10094 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
10095 * decide whether or not an HTTP message is present ;
10096 * 0 if the requested data cannot be fetched or if it is certain that
10097 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10098 * 1 if an HTTP message is ready
10099 */
10100static int
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10101smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10102 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10103{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10104 struct http_txn *txn;
10105 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10106
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]10107 /* Note: this function may only be used from places where
10108 * http_init_txn() has already been done, and implies that <s>,
10109 * <txn>, and <hdr_idx.v> are properly set. An extra check protects
10110 * against an eventual mistake in the fetch capability matrix.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10111 */
10112
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10113 if (!s)
10114 return 0;
10115 txn = s->txn;
10116
10117 if (!txn)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10118 return 0;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10119 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10120
10121 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10122 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10123
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10124 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10125 /* If the buffer does not leave enough free space at the end,
10126 * we must first realign it.
10127 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10128 if (s->req.buf->p > s->req.buf->data &&
10129 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
10130 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10131
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10132 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]10133 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10134 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10135
10136 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10137 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10138 http_msg_analyzer(msg, &txn->hdr_idx);
10139
10140 /* Still no valid request ? */
10141 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]10142 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10143 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10144 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10145 }
10146 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10147 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10148 return 0;
10149 }
10150
10151 /* OK we just got a valid HTTP request. We have some minor
10152 * preparation to perform so that further checks can rely
10153 * on HTTP tests.
10154 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10155
10156 /* If the request was parsed but was too large, we must absolutely
10157 * return an error so that it is not processed. At the moment this
10158 * cannot happen, but if the parsers are to change in the future,
10159 * we want this check to be maintained.
10160 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10161 if (unlikely(s->req.buf->i + s->req.buf->p >
10162 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10163 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10164 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10165 return 1;
10166 }
10167
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10168 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10169 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]10170 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10171
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10172 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
10173 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10174 }
10175
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10176 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10177 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10178 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10179
10180 /* otherwise everything's ready for the request */
10181 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10182 else {
10183 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10184 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
10185 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10186 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10187 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10188 }
10189
10190 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10191 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10192 return 1;
10193}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10194
Willy Tarreau6c616e02014-06-25 16:56:41 +0200[diff] [blame]10195/* Note: these functinos *do* modify the sample. Even in case of success, at
10196 * least the type and uint value are modified.
10197 */
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10198#define CHECK_HTTP_MESSAGE_FIRST() \
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10199 do { int r = smp_prefetch_http(smp->px, smp->strm, smp->opt, args, smp, 1); if (r <= 0) return r; } while (0)
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10200
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10201#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10202 do { int r = smp_prefetch_http(smp->px, smp->strm, smp->opt, args, smp, 0); if (r <= 0) return r; } while (0)
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10203
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10204
10205/* 1. Check on METHOD
10206 * We use the pre-parsed method if it is known, and store its number as an
10207 * integer. If it is unknown, we use the pointer and the length.
10208 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10209static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10210{
10211 int len, meth;
10212
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]10213 len = strlen(text);
10214 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10215
10216 pattern->val.i = meth;
10217 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]10218 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10219 pattern->len = len;
10220 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10221 else {
10222 pattern->ptr.str = NULL;
10223 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10224 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10225 return 1;
10226}
10227
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10228/* This function fetches the method of current HTTP request and stores
10229 * it in the global pattern struct as a chunk. There are two possibilities :
10230 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
10231 * in <len> and <ptr> is NULL ;
10232 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
10233 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10234 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10235 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10236static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10237smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10238{
10239 int meth;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10240 struct http_txn *txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10241
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10242 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10243
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10244 meth = txn->meth;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10245 smp->type = SMP_T_METH;
10246 smp->data.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10247 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10248 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
10249 /* ensure the indexes are not affected */
10250 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10251 smp->flags |= SMP_F_CONST;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10252 smp->data.meth.str.len = txn->req.sl.rq.m_l;
10253 smp->data.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10254 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10255 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10256 return 1;
10257}
10258
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10259/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10260static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10261{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10262 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10263 struct pattern_list *lst;
10264 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10265
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10266 list_for_each_entry(lst, &expr->patterns, list) {
10267 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10268
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10269 /* well-known method */
10270 if (pattern->val.i != HTTP_METH_OTHER) {
10271 if (smp->data.meth.meth == pattern->val.i)
10272 return pattern;
10273 else
10274 continue;
10275 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10276
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10277 /* Other method, we must compare the strings */
10278 if (pattern->len != smp->data.meth.str.len)
10279 continue;
10280
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10281 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Willy Tarreau4de2a942014-08-28 20:42:57 +0200[diff] [blame]10282 if ((icase && strncasecmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0) ||
10283 (!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]10284 return pattern;
10285 }
10286 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10287}
10288
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10289static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10290smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10291{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10292 struct http_txn *txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10293 char *ptr;
10294 int len;
10295
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10296 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10297
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10298 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10299 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
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
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10313static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10314smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10315{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10316 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10317 char *ptr;
10318 int len;
10319
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10320 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10321
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10322 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10323 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10324 return 0;
10325
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10326 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10327 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10328
10329 while ((len-- > 0) && (*ptr++ != '/'));
10330 if (len <= 0)
10331 return 0;
10332
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10333 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10334 smp->data.str.str = ptr;
10335 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10336
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10337 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10338 return 1;
10339}
10340
10341/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10342static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10343smp_fetch_stcode(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10344{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10345 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10346 char *ptr;
10347 int len;
10348
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10349 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10350
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10351 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10352 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10353 return 0;
10354
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10355 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10356 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10357
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10358 smp->type = SMP_T_UINT;
10359 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10360 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10361 return 1;
10362}
10363
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10364/* returns the longest available part of the body. This requires that the body
10365 * has been waited for using http-buffer-request.
10366 */
10367static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10368smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10369{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10370 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10371 struct http_msg *msg;
10372 unsigned long len;
10373 unsigned long block1;
10374 char *body;
10375 struct chunk *temp;
10376
10377 CHECK_HTTP_MESSAGE_FIRST();
10378
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10379 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10380 msg = &txn->req;
10381 else
10382 msg = &txn->rsp;
10383
10384 len = http_body_bytes(msg);
10385 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
10386
10387 block1 = len;
10388 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
10389 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
10390
10391 if (block1 == len) {
10392 /* buffer is not wrapped (or empty) */
10393 smp->type = SMP_T_BIN;
10394 smp->data.str.str = body;
10395 smp->data.str.len = len;
10396 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
10397 }
10398 else {
10399 /* buffer is wrapped, we need to defragment it */
10400 temp = get_trash_chunk();
10401 memcpy(temp->str, body, block1);
10402 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
10403 smp->type = SMP_T_BIN;
10404 smp->data.str.str = temp->str;
10405 smp->data.str.len = len;
10406 smp->flags = SMP_F_VOL_TEST;
10407 }
10408 return 1;
10409}
10410
10411
10412/* returns the available length of the body. This requires that the body
10413 * has been waited for using http-buffer-request.
10414 */
10415static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10416smp_fetch_body_len(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10417{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10418 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10419 struct http_msg *msg;
10420
10421 CHECK_HTTP_MESSAGE_FIRST();
10422
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10423 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10424 msg = &txn->req;
10425 else
10426 msg = &txn->rsp;
10427
10428 smp->type = SMP_T_UINT;
10429 smp->data.uint = http_body_bytes(msg);
10430
10431 smp->flags = SMP_F_VOL_TEST;
10432 return 1;
10433}
10434
10435
10436/* returns the advertised length of the body, or the advertised size of the
10437 * chunks available in the buffer. This requires that the body has been waited
10438 * for using http-buffer-request.
10439 */
10440static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10441smp_fetch_body_size(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10442{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10443 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10444 struct http_msg *msg;
10445
10446 CHECK_HTTP_MESSAGE_FIRST();
10447
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10448 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10449 msg = &txn->req;
10450 else
10451 msg = &txn->rsp;
10452
10453 smp->type = SMP_T_UINT;
10454 smp->data.uint = msg->body_len;
10455
10456 smp->flags = SMP_F_VOL_TEST;
10457 return 1;
10458}
10459
10460
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10461/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10462static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10463smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10464{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10465 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10466
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10467 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10468
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10469 txn = smp->strm->txn;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10470 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10471 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10472 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10473 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10474 return 1;
10475}
10476
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10477static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10478smp_fetch_url_ip(const struct arg *args, struct sample *smp, const char *kw, void *private)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10479{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10480 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10481 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10482
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10483 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10484
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10485 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10486 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]10487 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10488 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10489
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10490 smp->type = SMP_T_IPV4;
10491 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10492 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10493 return 1;
10494}
10495
10496static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10497smp_fetch_url_port(const struct arg *args, struct sample *smp, const char *kw, void *private)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10498{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10499 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10500 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10501
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10502 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10503
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10504 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10505 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]10506 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10507 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10508
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10509 smp->type = SMP_T_UINT;
10510 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10511 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10512 return 1;
10513}
10514
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10515/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10516 * Accepts an optional argument of type string containing the header field name,
10517 * and an optional argument of type signed or unsigned integer to request an
10518 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10519 * headers are considered from the first one. It does not stop on commas and
10520 * returns full lines instead (useful for User-Agent or Date for example).
10521 */
10522static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10523smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10524{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10525 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10526 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10527 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10528 int occ = 0;
10529 const char *name_str = NULL;
10530 int name_len = 0;
10531
10532 if (!ctx) {
10533 /* first call */
10534 ctx = &static_hdr_ctx;
10535 ctx->idx = 0;
10536 smp->ctx.a[0] = ctx;
10537 }
10538
10539 if (args) {
10540 if (args[0].type != ARGT_STR)
10541 return 0;
10542 name_str = args[0].data.str.str;
10543 name_len = args[0].data.str.len;
10544
10545 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10546 occ = args[1].data.uint;
10547 }
10548
10549 CHECK_HTTP_MESSAGE_FIRST();
10550
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10551 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10552 msg = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &smp->strm->txn->req : &smp->strm->txn->rsp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10553
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10554 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10555 /* search for header from the beginning */
10556 ctx->idx = 0;
10557
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10558 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10559 /* no explicit occurrence and single fetch => last header by default */
10560 occ = -1;
10561
10562 if (!occ)
10563 /* prepare to report multiple occurrences for ACL fetches */
10564 smp->flags |= SMP_F_NOT_LAST;
10565
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10566 smp->type = SMP_T_STR;
10567 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10568 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
10569 return 1;
10570
10571 smp->flags &= ~SMP_F_NOT_LAST;
10572 return 0;
10573}
10574
10575/* 6. Check on HTTP header count. The number of occurrences is returned.
10576 * Accepts exactly 1 argument of type string. It does not stop on commas and
10577 * returns full lines instead (useful for User-Agent or Date for example).
10578 */
10579static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10580smp_fetch_fhdr_cnt(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10581{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10582 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10583 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10584 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10585 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10586 const char *name = NULL;
10587 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10588
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10589 if (args && args->type == ARGT_STR) {
10590 name = args->data.str.str;
10591 len = args->data.str.len;
10592 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10593
10594 CHECK_HTTP_MESSAGE_FIRST();
10595
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10596 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10597 msg = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &smp->strm->txn->req : &smp->strm->txn->rsp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10598
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10599 ctx.idx = 0;
10600 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10601 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10602 cnt++;
10603
10604 smp->type = SMP_T_UINT;
10605 smp->data.uint = cnt;
10606 smp->flags = SMP_F_VOL_HDR;
10607 return 1;
10608}
10609
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10610static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10611smp_fetch_hdr_names(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10612{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10613 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10614 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10615 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10616 struct chunk *temp;
10617 char del = ',';
10618
10619 if (args && args->type == ARGT_STR)
10620 del = *args[0].data.str.str;
10621
10622 CHECK_HTTP_MESSAGE_FIRST();
10623
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10624 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10625 msg = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &smp->strm->txn->req : &smp->strm->txn->rsp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10626
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10627 temp = get_trash_chunk();
10628
10629 ctx.idx = 0;
10630 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10631 if (temp->len)
10632 temp->str[temp->len++] = del;
10633 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10634 temp->len += ctx.del;
10635 }
10636
10637 smp->type = SMP_T_STR;
10638 smp->data.str.str = temp->str;
10639 smp->data.str.len = temp->len;
10640 smp->flags = SMP_F_VOL_HDR;
10641 return 1;
10642}
10643
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10644/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10645 * Accepts an optional argument of type string containing the header field name,
10646 * and an optional argument of type signed or unsigned integer to request an
10647 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10648 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10649 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10650static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10651smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10652{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10653 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10654 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10655 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10656 int occ = 0;
10657 const char *name_str = NULL;
10658 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10659
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10660 if (!ctx) {
10661 /* first call */
10662 ctx = &static_hdr_ctx;
10663 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10664 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10665 }
10666
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10667 if (args) {
10668 if (args[0].type != ARGT_STR)
10669 return 0;
10670 name_str = args[0].data.str.str;
10671 name_len = args[0].data.str.len;
10672
10673 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10674 occ = args[1].data.uint;
10675 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10676
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10677 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10678
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10679 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10680 msg = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &smp->strm->txn->req : &smp->strm->txn->rsp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10681
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10682 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10683 /* search for header from the beginning */
10684 ctx->idx = 0;
10685
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10686 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10687 /* no explicit occurrence and single fetch => last header by default */
10688 occ = -1;
10689
10690 if (!occ)
10691 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10692 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10693
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10694 smp->type = SMP_T_STR;
10695 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10696 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]10697 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10698
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10699 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10700 return 0;
10701}
10702
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10703/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10704 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10705 */
10706static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10707smp_fetch_hdr_cnt(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10708{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10709 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10710 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10711 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10712 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10713 const char *name = NULL;
10714 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10715
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10716 if (args && args->type == ARGT_STR) {
10717 name = args->data.str.str;
10718 len = args->data.str.len;
10719 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10720
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10721 CHECK_HTTP_MESSAGE_FIRST();
10722
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10723 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10724 msg = ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &smp->strm->txn->req : &smp->strm->txn->rsp;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10725
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10726 ctx.idx = 0;
10727 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10728 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10729 cnt++;
10730
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10731 smp->type = SMP_T_UINT;
10732 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10733 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10734 return 1;
10735}
10736
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10737/* Fetch an HTTP header's integer value. The integer value is returned. It
10738 * takes a mandatory argument of type string and an optional one of type int
10739 * to designate a specific occurrence. It returns an unsigned integer, which
10740 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10741 */
10742static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10743smp_fetch_hdr_val(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10744{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10745 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10746
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10747 if (ret > 0) {
10748 smp->type = SMP_T_UINT;
10749 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10750 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10751
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10752 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10753}
10754
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10755/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10756 * and an optional one of type int to designate a specific occurrence.
10757 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10758 */
10759static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10760smp_fetch_hdr_ip(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10761{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10762 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10763
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10764 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10765 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
10766 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10767 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10768 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10769 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10770 if (smp->data.str.len < temp->size - 1) {
10771 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
10772 temp->str[smp->data.str.len] = '\0';
10773 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
10774 smp->type = SMP_T_IPV6;
10775 break;
10776 }
10777 }
10778 }
10779
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10780 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10781 if (!(smp->flags & SMP_F_NOT_LAST))
10782 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10783 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10784 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10785}
10786
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10787/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10788 * the first '/' after the possible hostname, and ends before the possible '?'.
10789 */
10790static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10791smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10792{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10793 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10794 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10795
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10796 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10797
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10798 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10799 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]10800 ptr = http_get_path(txn);
10801 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10802 return 0;
10803
10804 /* OK, we got the '/' ! */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10805 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10806 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10807
10808 while (ptr < end && *ptr != '?')
10809 ptr++;
10810
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10811 smp->data.str.len = ptr - smp->data.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10812 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10813 return 1;
10814}
10815
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10816/* This produces a concatenation of the first occurrence of the Host header
10817 * followed by the path component if it begins with a slash ('/'). This means
10818 * that '*' will not be added, resulting in exactly the first Host entry.
10819 * If no Host header is found, then the path is returned as-is. The returned
10820 * 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]10821 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10822 */
10823static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10824smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10825{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10826 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10827 char *ptr, *end, *beg;
10828 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10829 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10830
10831 CHECK_HTTP_MESSAGE_FIRST();
10832
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10833 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10834 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10835 if (!http_find_header2("Host", 4, txn->req.chn->buf->p, &txn->hdr_idx, &ctx) || !ctx.vlen)
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10836 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10837
10838 /* 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]10839 temp = get_trash_chunk();
10840 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10841 smp->type = SMP_T_STR;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10842 smp->data.str.str = temp->str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10843 smp->data.str.len = ctx.vlen;
10844
10845 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10846 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]10847 beg = http_get_path(txn);
10848 if (!beg)
10849 beg = end;
10850
10851 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10852
10853 if (beg < ptr && *beg == '/') {
10854 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
10855 smp->data.str.len += ptr - beg;
10856 }
10857
10858 smp->flags = SMP_F_VOL_1ST;
10859 return 1;
10860}
10861
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10862/* This produces a 32-bit hash of the concatenation of the first occurrence of
10863 * the Host header followed by the path component if it begins with a slash ('/').
10864 * This means that '*' will not be added, resulting in exactly the first Host
10865 * 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]10866 * is hashed using the path hash followed by a full avalanche hash and provides a
10867 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10868 * high-traffic sites without having to store whole paths.
10869 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10870int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10871smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10872{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10873 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10874 struct hdr_ctx ctx;
10875 unsigned int hash = 0;
10876 char *ptr, *beg, *end;
10877 int len;
10878
10879 CHECK_HTTP_MESSAGE_FIRST();
10880
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10881 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10882 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10883 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]10884 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10885 ptr = ctx.line + ctx.val;
10886 len = ctx.vlen;
10887 while (len--)
10888 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10889 }
10890
10891 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10892 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]10893 beg = http_get_path(txn);
10894 if (!beg)
10895 beg = end;
10896
10897 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10898
10899 if (beg < ptr && *beg == '/') {
10900 while (beg < ptr)
10901 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10902 }
10903 hash = full_hash(hash);
10904
10905 smp->type = SMP_T_UINT;
10906 smp->data.uint = hash;
10907 smp->flags = SMP_F_VOL_1ST;
10908 return 1;
10909}
10910
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10911/* 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]10912 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10913 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10914 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10915 * that in environments where IPv6 is insignificant, truncating the output to
10916 * 8 bytes would still work.
10917 */
10918static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10919smp_fetch_base32_src(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10920{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10921 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10922 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10923
10924 if (!cli_conn)
10925 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10926
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10927 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10928 return 0;
10929
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10930 temp = get_trash_chunk();
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]10931 *(unsigned int *)temp->str = htonl(smp->data.uint);
10932 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10933
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10934 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10935 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10936 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]10937 temp->len += 4;
10938 break;
10939 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10940 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]10941 temp->len += 16;
10942 break;
10943 default:
10944 return 0;
10945 }
10946
10947 smp->data.str = *temp;
10948 smp->type = SMP_T_BIN;
10949 return 1;
10950}
10951
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10952/* Extracts the query string, which comes after the question mark '?'. If no
10953 * question mark is found, nothing is returned. Otherwise it returns a sample
10954 * of type string carrying the whole query string.
10955 */
10956static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10957smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10958{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10959 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10960 char *ptr, *end;
10961
10962 CHECK_HTTP_MESSAGE_FIRST();
10963
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10964 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10965 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
10966 end = ptr + txn->req.sl.rq.u_l;
10967
10968 /* look up the '?' */
10969 do {
10970 if (ptr == end)
10971 return 0;
10972 } while (*ptr++ != '?');
10973
10974 smp->type = SMP_T_STR;
10975 smp->data.str.str = ptr;
10976 smp->data.str.len = end - ptr;
10977 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
10978 return 1;
10979}
10980
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10981static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10982smp_fetch_proto_http(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10983{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10984 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10985 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10986 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10987
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10988 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10989
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10990 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10991 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10992 return 1;
10993}
10994
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10995/* return a valid test if the current request is the first one on the connection */
10996static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10997smp_fetch_http_first_req(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10998{
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10999 smp->type = SMP_T_BOOL;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11000 smp->data.uint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]11001 return 1;
11002}
11003
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11004/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11005static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11006smp_fetch_http_auth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11007{
11008
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11009 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11010 return 0;
11011
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]11012 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11013
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11014 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11015 return 0;
11016
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11017 smp->type = SMP_T_BOOL;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11018 smp->data.uint = check_user(args->data.usr, smp->strm->txn->auth.user,
11019 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11020 return 1;
11021}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11022
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11023/* Accepts exactly 1 argument of type userlist */
11024static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11025smp_fetch_http_auth_grp(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11026{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11027 if (!args || args->type != ARGT_USR)
11028 return 0;
11029
11030 CHECK_HTTP_MESSAGE_FIRST();
11031
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11032 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11033 return 0;
11034
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11035 /* if the user does not belong to the userlist or has a wrong password,
11036 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11037 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11038 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11039 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
11040 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11041 return 0;
11042
11043 /* pat_match_auth() will need the user list */
11044 smp->ctx.a[0] = args->data.usr;
11045
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11046 smp->type = SMP_T_STR;
11047 smp->flags = SMP_F_CONST;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11048 smp->data.str.str = smp->strm->txn->auth.user;
11049 smp->data.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11050
11051 return 1;
11052}
11053
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11054/* Try to find the next occurrence of a cookie name in a cookie header value.
11055 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
11056 * the cookie value is returned into *value and *value_l, and the function
11057 * returns a pointer to the next pointer to search from if the value was found.
11058 * Otherwise if the cookie was not found, NULL is returned and neither value
11059 * nor value_l are touched. The input <hdr> string should first point to the
11060 * header's value, and the <hdr_end> pointer must point to the first character
11061 * not part of the value. <list> must be non-zero if value may represent a list
11062 * of values (cookie headers). This makes it faster to abort parsing when no
11063 * list is expected.
11064 */
11065static char *
11066extract_cookie_value(char *hdr, const char *hdr_end,
11067 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]11068 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11069{
11070 char *equal, *att_end, *att_beg, *val_beg, *val_end;
11071 char *next;
11072
11073 /* we search at least a cookie name followed by an equal, and more
11074 * generally something like this :
11075 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
11076 */
11077 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
11078 /* Iterate through all cookies on this line */
11079
11080 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
11081 att_beg++;
11082
11083 /* find att_end : this is the first character after the last non
11084 * space before the equal. It may be equal to hdr_end.
11085 */
11086 equal = att_end = att_beg;
11087
11088 while (equal < hdr_end) {
11089 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
11090 break;
11091 if (http_is_spht[(unsigned char)*equal++])
11092 continue;
11093 att_end = equal;
11094 }
11095
11096 /* here, <equal> points to '=', a delimitor or the end. <att_end>
11097 * is between <att_beg> and <equal>, both may be identical.
11098 */
11099
11100 /* look for end of cookie if there is an equal sign */
11101 if (equal < hdr_end && *equal == '=') {
11102 /* look for the beginning of the value */
11103 val_beg = equal + 1;
11104 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
11105 val_beg++;
11106
11107 /* find the end of the value, respecting quotes */
11108 next = find_cookie_value_end(val_beg, hdr_end);
11109
11110 /* make val_end point to the first white space or delimitor after the value */
11111 val_end = next;
11112 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
11113 val_end--;
11114 } else {
11115 val_beg = val_end = next = equal;
11116 }
11117
11118 /* We have nothing to do with attributes beginning with '$'. However,
11119 * they will automatically be removed if a header before them is removed,
11120 * since they're supposed to be linked together.
11121 */
11122 if (*att_beg == '$')
11123 continue;
11124
11125 /* Ignore cookies with no equal sign */
11126 if (equal == next)
11127 continue;
11128
11129 /* Now we have the cookie name between att_beg and att_end, and
11130 * its value between val_beg and val_end.
11131 */
11132
11133 if (att_end - att_beg == cookie_name_l &&
11134 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
11135 /* let's return this value and indicate where to go on from */
11136 *value = val_beg;
11137 *value_l = val_end - val_beg;
11138 return next + 1;
11139 }
11140
11141 /* Set-Cookie headers only have the name in the first attr=value part */
11142 if (!list)
11143 break;
11144 }
11145
11146 return NULL;
11147}
11148
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11149/* Fetch a captured HTTP request header. The index is the position of
11150 * the "capture" option in the configuration file
11151 */
11152static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11153smp_fetch_capture_header_req(const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11154{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11155 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11156 int idx;
11157
11158 if (!args || args->type != ARGT_UINT)
11159 return 0;
11160
11161 idx = args->data.uint;
11162
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11163 if (idx > (fe->nb_req_cap - 1) || smp->strm->req_cap == NULL || smp->strm->req_cap[idx] == NULL)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11164 return 0;
11165
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11166 smp->type = SMP_T_STR;
11167 smp->flags |= SMP_F_CONST;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11168 smp->data.str.str = smp->strm->req_cap[idx];
11169 smp->data.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11170
11171 return 1;
11172}
11173
11174/* Fetch a captured HTTP response header. The index is the position of
11175 * the "capture" option in the configuration file
11176 */
11177static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11178smp_fetch_capture_header_res(const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11179{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11180 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11181 int idx;
11182
11183 if (!args || args->type != ARGT_UINT)
11184 return 0;
11185
11186 idx = args->data.uint;
11187
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11188 if (idx > (fe->nb_rsp_cap - 1) || smp->strm->res_cap == NULL || smp->strm->res_cap[idx] == NULL)
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11189 return 0;
11190
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11191 smp->type = SMP_T_STR;
11192 smp->flags |= SMP_F_CONST;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11193 smp->data.str.str = smp->strm->res_cap[idx];
11194 smp->data.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11195
11196 return 1;
11197}
11198
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11199/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
11200static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11201smp_fetch_capture_req_method(const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11202{
11203 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11204 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11205 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11206
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11207 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11208 return 0;
11209
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11210 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11211
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11212 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11213 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11214
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11215 temp = get_trash_chunk();
11216 temp->str = txn->uri;
11217 temp->len = ptr - txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11218 smp->data.str = *temp;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11219 smp->type = SMP_T_STR;
11220 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11221
11222 return 1;
11223
11224}
11225
11226/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
11227static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11228smp_fetch_capture_req_uri(const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11229{
11230 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11231 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11232 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11233
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11234 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11235 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11236
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11237 ptr = txn->uri;
11238
11239 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11240 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11241
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11242 if (!*ptr)
11243 return 0;
11244
11245 ptr++; /* skip the space */
11246
11247 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11248 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11249 if (!ptr)
11250 return 0;
11251 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
11252 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11253
11254 smp->data.str = *temp;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11255 smp->data.str.len = ptr - temp->str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11256 smp->type = SMP_T_STR;
11257 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11258
11259 return 1;
11260}
11261
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11262/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
11263 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11264 */
11265static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11266smp_fetch_capture_req_ver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11267{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11268 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11269
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11270 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11271 return 0;
11272
11273 if (txn->req.flags & HTTP_MSGF_VER_11)
11274 smp->data.str.str = "HTTP/1.1";
11275 else
11276 smp->data.str.str = "HTTP/1.0";
11277
11278 smp->data.str.len = 8;
11279 smp->type = SMP_T_STR;
11280 smp->flags = SMP_F_CONST;
11281 return 1;
11282
11283}
11284
11285/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
11286 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11287 */
11288static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11289smp_fetch_capture_res_ver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11290{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11291 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11292
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11293 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11294 return 0;
11295
11296 if (txn->rsp.flags & HTTP_MSGF_VER_11)
11297 smp->data.str.str = "HTTP/1.1";
11298 else
11299 smp->data.str.str = "HTTP/1.0";
11300
11301 smp->data.str.len = 8;
11302 smp->type = SMP_T_STR;
11303 smp->flags = SMP_F_CONST;
11304 return 1;
11305
11306}
11307
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11308
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11309/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11310 * 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]11311 * 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]11312 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11313 * 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]11314 * Accepts exactly 1 argument of type string. If the input options indicate
11315 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]11316 * The returned sample is of type CSTR. Can be used to parse cookies in other
11317 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11318 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11319int smp_fetch_cookie(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11320{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11321 struct http_txn *txn;
11322 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11323 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11324 const struct http_msg *msg;
11325 const char *hdr_name;
11326 int hdr_name_len;
11327 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11328 int occ = 0;
11329 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11330
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11331 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11332 return 0;
11333
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11334 if (!ctx) {
11335 /* first call */
11336 ctx = &static_hdr_ctx;
11337 ctx->idx = 0;
11338 smp->ctx.a[2] = ctx;
11339 }
11340
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11341 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11342
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11343 txn = smp->strm->txn;
11344 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11345
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11346 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11347 msg = &txn->req;
11348 hdr_name = "Cookie";
11349 hdr_name_len = 6;
11350 } else {
11351 msg = &txn->rsp;
11352 hdr_name = "Set-Cookie";
11353 hdr_name_len = 10;
11354 }
11355
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11356 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11357 /* no explicit occurrence and single fetch => last cookie by default */
11358 occ = -1;
11359
11360 /* OK so basically here, either we want only one value and it's the
11361 * last one, or we want to iterate over all of them and we fetch the
11362 * next one.
11363 */
11364
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11365 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11366 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11367 /* search for the header from the beginning, we must first initialize
11368 * the search parameters.
11369 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11370 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11371 ctx->idx = 0;
11372 }
11373
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11374 smp->flags |= SMP_F_VOL_HDR;
11375
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11376 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11377 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11378 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11379 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11380 goto out;
11381
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11382 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11383 continue;
11384
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11385 smp->ctx.a[0] = ctx->line + ctx->val;
11386 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11387 }
11388
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11389 smp->type = SMP_T_STR;
11390 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11391 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]11392 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11393 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11394 &smp->data.str.str,
11395 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11396 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11397 found = 1;
11398 if (occ >= 0) {
11399 /* one value was returned into smp->data.str.{str,len} */
11400 smp->flags |= SMP_F_NOT_LAST;
11401 return 1;
11402 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11403 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11404 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11405 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11406 /* all cookie headers and values were scanned. If we're looking for the
11407 * last occurrence, we may return it now.
11408 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11409 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11410 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11411 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11412}
11413
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11414/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11415 * 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]11416 * multiple cookies may be parsed on the same line. The returned sample is of
11417 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11418 */
11419static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11420smp_fetch_cookie_cnt(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11421{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11422 struct http_txn *txn;
11423 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11424 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11425 const struct http_msg *msg;
11426 const char *hdr_name;
11427 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11428 int cnt;
11429 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11430 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11431
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11432 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11433 return 0;
11434
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11435 CHECK_HTTP_MESSAGE_FIRST();
11436
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11437 txn = smp->strm->txn;
11438 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11439
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11440 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11441 msg = &txn->req;
11442 hdr_name = "Cookie";
11443 hdr_name_len = 6;
11444 } else {
11445 msg = &txn->rsp;
11446 hdr_name = "Set-Cookie";
11447 hdr_name_len = 10;
11448 }
11449
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11450 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11451 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11452 ctx.idx = 0;
11453 cnt = 0;
11454
11455 while (1) {
11456 /* Note: val_beg == NULL every time we need to fetch a new header */
11457 if (!val_beg) {
11458 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11459 break;
11460
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11461 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11462 continue;
11463
11464 val_beg = ctx.line + ctx.val;
11465 val_end = val_beg + ctx.vlen;
11466 }
11467
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11468 smp->type = SMP_T_STR;
11469 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11470 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11471 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11472 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11473 &smp->data.str.str,
11474 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11475 cnt++;
11476 }
11477 }
11478
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]11479 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11480 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11481 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11482 return 1;
11483}
11484
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11485/* Fetch an cookie's integer value. The integer value is returned. It
11486 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11487 */
11488static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11489smp_fetch_cookie_val(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11490{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11491 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11492
11493 if (ret > 0) {
11494 smp->type = SMP_T_UINT;
11495 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11496 }
11497
11498 return ret;
11499}
11500
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11501/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11502/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11503/************************************************************************/
11504
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11505/*
11506 * Given a path string and its length, find the position of beginning of the
11507 * query string. Returns NULL if no query string is found in the path.
11508 *
11509 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11510 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11511 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11512 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11513static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11514{
11515 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11516
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11517 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11518 return p ? p + 1 : NULL;
11519}
11520
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11521static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11522{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11523 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11524}
11525
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11526/* after increasing a pointer value, it can exceed the first buffer
11527 * size. This function transform the value of <ptr> according with
11528 * the expected position. <chunks> is an array of the one or two
11529 * avalaible chunks. The first value is the start of the first chunk,
11530 * the second value if the end+1 of the first chunks. The third value
11531 * is NULL or the start of the second chunk and the fourth value is
11532 * the end+1 of the second chunk. The function returns 1 if does a
11533 * wrap, else returns 0.
11534 */
11535static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
11536{
11537 if (*ptr < chunks[1])
11538 return 0;
11539 if (!chunks[2])
11540 return 0;
11541 *ptr = chunks[2] + ( *ptr - chunks[1] );
11542 return 1;
11543}
11544
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11545/*
11546 * Given a url parameter, find the starting position of the first occurence,
11547 * or NULL if the parameter is not found.
11548 *
11549 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11550 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11551 *
11552 * Warning:this function returns a pointer that can be point to the first chunk
11553 * or the second chunk. The caller must be check the position before using the
11554 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11555 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11556static const char *
11557find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11558 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11559 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11560{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11561 const char *pos, *last, *equal;
11562 const char **bufs = chunks;
11563 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11564
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11565
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11566 pos = bufs[0];
11567 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11568 while (pos <= last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11569 /* Check the equal. */
11570 equal = pos + url_param_name_l;
11571 if (fix_pointer_if_wrap(chunks, &equal)) {
11572 if (equal >= chunks[3])
11573 return NULL;
11574 } else {
11575 if (equal >= chunks[1])
11576 return NULL;
11577 }
11578 if (*equal == '=') {
11579 if (pos + url_param_name_l > last) {
11580 /* process wrap case, we detect a wrap. In this case, the
11581 * comparison is performed in two parts.
11582 */
11583
11584 /* This is the end, we dont have any other chunk. */
11585 if (bufs != chunks || !bufs[2])
11586 return NULL;
11587
11588 /* Compute the length of each part of the comparison. */
11589 l1 = last - pos;
11590 l2 = url_param_name_l - l1;
11591
11592 /* The second buffer is too short to contain the compared string. */
11593 if (bufs[2] + l2 > bufs[3])
11594 return NULL;
11595
11596 if (memcmp(pos, url_param_name, l1) == 0 &&
11597 memcmp(bufs[2], url_param_name+l1, l2) == 0)
11598 return pos;
11599
11600 /* Perform wrapping and jump the string who fail the comparison. */
11601 bufs += 2;
11602 pos = bufs[0] + l2;
11603 last = bufs[1];
11604
11605 } else {
11606 /* process a simple comparison. */
11607 if (memcmp(pos, url_param_name, url_param_name_l) == 0) {
11608 return pos; }
11609 pos += url_param_name_l + 1;
11610 if (fix_pointer_if_wrap(chunks, &pos))
11611 last = bufs[2];
11612 }
11613 }
11614
11615 while (1) {
11616 /* Look for the next delimiter. */
11617 while (pos <= last && !is_param_delimiter(*pos, delim))
11618 pos++;
11619 if (pos < last)
11620 break;
11621 /* process buffer wrapping. */
11622 if (bufs != chunks || !bufs[2])
11623 return NULL;
11624 bufs += 2;
11625 pos = bufs[0];
11626 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11627 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11628 pos++;
11629 }
11630 return NULL;
11631}
11632
11633/*
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11634 * Given a url parameter name and a query string, returns its value and size
11635 * into *value and *value_l respectively, and returns non-zero. An empty
11636 * url_param_name matches the first available parameter. If the parameter is
11637 * not found, zero is returned and value/value_l are not touched.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11638 */
11639static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11640find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11641 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11642 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11643{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11644 const char *arg_start, *qs_end;
11645 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11646
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11647 arg_start = chunks[0];
11648 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11649 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11650 /* Looks for an argument name. */
11651 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11652 url_param_name, url_param_name_l,
11653 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11654 /* Check for wrapping. */
11655 if (arg_start > qs_end)
11656 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11657 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11658 if (!arg_start)
11659 return 0;
11660
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11661 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11662 while (1) {
11663 /* looks for the first argument. */
11664 value_start = memchr(arg_start, '=', qs_end - arg_start);
11665 if (!value_start) {
11666
11667 /* Check for wrapping. */
11668 if (arg_start >= chunks[0] &&
11669 arg_start <= chunks[1] &&
11670 chunks[2]) {
11671 arg_start = chunks[2];
11672 qs_end = chunks[3];
11673 continue;
11674 }
11675 return 0;
11676 }
11677 break;
11678 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11679 value_start++;
11680 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11681 else {
11682 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11683 value_start = arg_start + url_param_name_l + 1;
11684
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11685 /* Check for pointer wrapping. */
11686 if (fix_pointer_if_wrap(chunks, &value_start)) {
11687 /* Update the end pointer. */
11688 qs_end = chunks[3];
11689
11690 /* Check for overflow. */
11691 if (value_start > qs_end)
11692 return 0;
11693 }
11694 }
11695
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11696 value_end = value_start;
11697
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11698 while (1) {
11699 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
11700 value_end++;
11701 if (value_end < qs_end)
11702 break;
11703 /* process buffer wrapping. */
11704 if (value_end >= chunks[0] &&
11705 value_end <= chunks[1] &&
11706 chunks[2]) {
11707 value_end = chunks[2];
11708 qs_end = chunks[3];
11709 continue;
11710 }
11711 break;
11712 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11713
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11714 *vstart = value_start;
11715 *vend = value_end;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]11716 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11717}
11718
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11719/* This scans a URL-encoded query string. It takes an optionally wrapping
11720 * string whose first contigous chunk has its beginning in ctx->a[0] and end
11721 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
11722 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11723 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11724static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11725smp_fetch_param(char delim, const char *name, int name_len, const struct arg *args, struct sample *smp, const char *kw, void *private)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11726{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11727 const char *vstart, *vend;
11728 struct chunk *temp;
11729 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11730
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11731 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11732 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11733 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11734 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11735 return 0;
11736
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11737 /* Create sample. If the value is contiguous, return the pointer as CONST,
11738 * if the value is wrapped, copy-it in a buffer.
11739 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11740 smp->type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11741 if (chunks[2] &&
11742 vstart >= chunks[0] && vstart <= chunks[1] &&
11743 vend >= chunks[2] && vend <= chunks[3]) {
11744 /* Wrapped case. */
11745 temp = get_trash_chunk();
11746 memcpy(temp->str, vstart, chunks[1] - vstart);
11747 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
11748 smp->data.str.str = temp->str;
11749 smp->data.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
11750 } else {
11751 /* Contiguous case. */
11752 smp->data.str.str = (char *)vstart;
11753 smp->data.str.len = vend - vstart;
11754 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11755 }
11756
11757 /* Update context, check wrapping. */
11758 chunks[0] = vend;
11759 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11760 chunks[1] = chunks[3];
11761 chunks[2] = NULL;
11762 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11763
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11764 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11765 smp->flags |= SMP_F_NOT_LAST;
11766
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11767 return 1;
11768}
11769
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11770/* This function iterates over each parameter of the query string. It uses
11771 * ctx->a[0] and ctx->a[1] to store the beginning and end of the current
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11772 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11773 * An optional parameter name is passed in args[0], otherwise any parameter is
11774 * considered. It supports an optional delimiter argument for the beginning of
11775 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11776 */
11777static int
11778smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11779{
11780 struct http_msg *msg;
11781 char delim = '?';
11782 const char *name;
11783 int name_len;
11784
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11785 if (!args ||
11786 (args[0].type && args[0].type != ARGT_STR) ||
11787 (args[1].type && args[1].type != ARGT_STR))
11788 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11789
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11790 name = "";
11791 name_len = 0;
11792 if (args->type == ARGT_STR) {
11793 name = args->data.str.str;
11794 name_len = args->data.str.len;
11795 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11796
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11797 if (args[1].type)
11798 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11799
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame]11800 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11801 CHECK_HTTP_MESSAGE_FIRST();
11802
11803 msg = &smp->strm->txn->req;
11804
11805 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
11806 msg->sl.rq.u_l, delim);
11807 if (!smp->ctx.a[0])
11808 return 0;
11809
11810 smp->ctx.a[1] = msg->chn->buf->p + msg->sl.rq.u + msg->sl.rq.u_l;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11811
11812 /* Assume that the context is filled with NULL pointer
11813 * before the first call.
11814 * smp->ctx.a[2] = NULL;
11815 * smp->ctx.a[3] = NULL;
11816 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11817 }
11818
11819 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
11820}
11821
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11822/* This function iterates over each parameter of the body. This requires
11823 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11824 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
11825 * contigous part of the body, and optionally ctx->a[2..3] to reference the
11826 * optional second part if the body wraps at the end of the buffer. An optional
11827 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11828 */
11829static int
11830smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11831{
11832 struct http_txn *txn = smp->strm->txn;
11833 struct http_msg *msg;
11834 unsigned long len;
11835 unsigned long block1;
11836 char *body;
11837 const char *name;
11838 int name_len;
11839
11840 if (!args || (args[0].type && args[0].type != ARGT_STR))
11841 return 0;
11842
11843 name = "";
11844 name_len = 0;
11845 if (args[0].type == ARGT_STR) {
11846 name = args[0].data.str.str;
11847 name_len = args[0].data.str.len;
11848 }
11849
11850 if (!smp->ctx.a[0]) { // first call, find the query string
11851 CHECK_HTTP_MESSAGE_FIRST();
11852
11853 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
11854 msg = &txn->req;
11855 else
11856 msg = &txn->rsp;
11857
11858 len = http_body_bytes(msg);
11859 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
11860
11861 block1 = len;
11862 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
11863 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
11864
11865 if (block1 == len) {
11866 /* buffer is not wrapped (or empty) */
11867 smp->ctx.a[0] = body;
11868 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11869
11870 /* Assume that the context is filled with NULL pointer
11871 * before the first call.
11872 * smp->ctx.a[2] = NULL;
11873 * smp->ctx.a[3] = NULL;
11874 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11875 }
11876 else {
11877 /* buffer is wrapped, we need to defragment it */
11878 smp->ctx.a[0] = body;
11879 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11880 smp->ctx.a[2] = msg->chn->buf->data;
11881 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11882 }
11883 }
11884 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
11885}
11886
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11887/* Return the signed integer value for the specified url parameter (see url_param
11888 * above).
11889 */
11890static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11891smp_fetch_url_param_val(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11892{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11893 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11894
11895 if (ret > 0) {
11896 smp->type = SMP_T_UINT;
11897 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11898 }
11899
11900 return ret;
11901}
11902
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11903/* This produces a 32-bit hash of the concatenation of the first occurrence of
11904 * the Host header followed by the path component if it begins with a slash ('/').
11905 * This means that '*' will not be added, resulting in exactly the first Host
11906 * entry. If no Host header is found, then the path is used. The resulting value
11907 * is hashed using the url hash followed by a full avalanche hash and provides a
11908 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11909 * high-traffic sites without having to store whole paths.
11910 * this differs from the base32 functions in that it includes the url parameters
11911 * as well as the path
11912 */
11913static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11914smp_fetch_url32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11915{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11916 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11917 struct hdr_ctx ctx;
11918 unsigned int hash = 0;
11919 char *ptr, *beg, *end;
11920 int len;
11921
11922 CHECK_HTTP_MESSAGE_FIRST();
11923
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11924 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11925 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11926 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]11927 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11928 ptr = ctx.line + ctx.val;
11929 len = ctx.vlen;
11930 while (len--)
11931 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11932 }
11933
11934 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11935 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]11936 beg = http_get_path(txn);
11937 if (!beg)
11938 beg = end;
11939
11940 for (ptr = beg; ptr < end ; ptr++);
11941
11942 if (beg < ptr && *beg == '/') {
11943 while (beg < ptr)
11944 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11945 }
11946 hash = full_hash(hash);
11947
11948 smp->type = SMP_T_UINT;
11949 smp->data.uint = hash;
11950 smp->flags = SMP_F_VOL_1ST;
11951 return 1;
11952}
11953
11954/* This concatenates the source address with the 32-bit hash of the Host and
11955 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11956 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11957 * on the source address length. The URL hash is stored before the address so
11958 * that in environments where IPv6 is insignificant, truncating the output to
11959 * 8 bytes would still work.
11960 */
11961static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11962smp_fetch_url32_src(const struct arg *args, struct sample *smp, const char *kw, void *private)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11963{
11964 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11965 struct connection *cli_conn = objt_conn(smp->sess->origin);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11966
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11967 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11968 return 0;
11969
11970 temp = get_trash_chunk();
11971 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
11972 temp->len += sizeof(smp->data.uint);
11973
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11974 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11975 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11976 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]11977 temp->len += 4;
11978 break;
11979 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11980 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]11981 temp->len += 16;
11982 break;
11983 default:
11984 return 0;
11985 }
11986
11987 smp->data.str = *temp;
11988 smp->type = SMP_T_BIN;
11989 return 1;
11990}
11991
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11992/* This function is used to validate the arguments passed to any "hdr" fetch
11993 * keyword. These keywords support an optional positive or negative occurrence
11994 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11995 * is assumed that the types are already the correct ones. Returns 0 on error,
11996 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11997 * error message in case of error, that the caller is responsible for freeing.
11998 * The initial location must either be freeable or NULL.
11999 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]12000int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12001{
12002 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]12003 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]12004 return 0;
12005 }
12006 return 1;
12007}
12008
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12009/* takes an UINT value on input supposed to represent the time since EPOCH,
12010 * adds an optional offset found in args[0] and emits a string representing
12011 * the date in RFC-1123/5322 format.
12012 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12013static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12014{
12015 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
12016 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
12017 struct chunk *temp;
12018 struct tm *tm;
12019 time_t curr_date = smp->data.uint;
12020
12021 /* add offset */
12022 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
12023 curr_date += args[0].data.sint;
12024
12025 tm = gmtime(&curr_date);
12026
12027 temp = get_trash_chunk();
12028 temp->len = snprintf(temp->str, temp->size - temp->len,
12029 "%s, %02d %s %04d %02d:%02d:%02d GMT",
12030 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
12031 tm->tm_hour, tm->tm_min, tm->tm_sec);
12032
12033 smp->data.str = *temp;
12034 smp->type = SMP_T_STR;
12035 return 1;
12036}
12037
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12038/* Match language range with language tag. RFC2616 14.4:
12039 *
12040 * A language-range matches a language-tag if it exactly equals
12041 * the tag, or if it exactly equals a prefix of the tag such
12042 * that the first tag character following the prefix is "-".
12043 *
12044 * Return 1 if the strings match, else return 0.
12045 */
12046static inline int language_range_match(const char *range, int range_len,
12047 const char *tag, int tag_len)
12048{
12049 const char *end = range + range_len;
12050 const char *tend = tag + tag_len;
12051 while (range < end) {
12052 if (*range == '-' && tag == tend)
12053 return 1;
12054 if (*range != *tag || tag == tend)
12055 return 0;
12056 range++;
12057 tag++;
12058 }
12059 /* Return true only if the last char of the tag is matched. */
12060 return tag == tend;
12061}
12062
12063/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12064static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12065{
12066 const char *al = smp->data.str.str;
12067 const char *end = al + smp->data.str.len;
12068 const char *token;
12069 int toklen;
12070 int qvalue;
12071 const char *str;
12072 const char *w;
12073 int best_q = 0;
12074
12075 /* Set the constant to the sample, because the output of the
12076 * function will be peek in the constant configuration string.
12077 */
12078 smp->flags |= SMP_F_CONST;
12079 smp->data.str.size = 0;
12080 smp->data.str.str = "";
12081 smp->data.str.len = 0;
12082
12083 /* Parse the accept language */
12084 while (1) {
12085
12086 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12087 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12088 al++;
12089 if (al >= end)
12090 break;
12091
12092 /* Start of the fisrt word. */
12093 token = al;
12094
12095 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12096 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12097 al++;
12098 if (al == token)
12099 goto expect_comma;
12100
12101 /* Length of the token. */
12102 toklen = al - token;
12103 qvalue = 1000;
12104
12105 /* Check if the token exists in the list. If the token not exists,
12106 * jump to the next token.
12107 */
12108 str = args[0].data.str.str;
12109 w = str;
12110 while (1) {
12111 if (*str == ';' || *str == '\0') {
12112 if (language_range_match(token, toklen, w, str-w))
12113 goto look_for_q;
12114 if (*str == '\0')
12115 goto expect_comma;
12116 w = str + 1;
12117 }
12118 str++;
12119 }
12120 goto expect_comma;
12121
12122look_for_q:
12123
12124 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12125 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12126 al++;
12127 if (al >= end)
12128 goto process_value;
12129
12130 /* If ',' is found, process the result */
12131 if (*al == ',')
12132 goto process_value;
12133
12134 /* If the character is different from ';', look
12135 * for the end of the header part in best effort.
12136 */
12137 if (*al != ';')
12138 goto expect_comma;
12139
12140 /* Assumes that the char is ';', now expect "q=". */
12141 al++;
12142
12143 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12144 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12145 al++;
12146 if (al >= end)
12147 goto process_value;
12148
12149 /* Expect 'q'. If no 'q', continue in best effort */
12150 if (*al != 'q')
12151 goto process_value;
12152 al++;
12153
12154 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12155 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12156 al++;
12157 if (al >= end)
12158 goto process_value;
12159
12160 /* Expect '='. If no '=', continue in best effort */
12161 if (*al != '=')
12162 goto process_value;
12163 al++;
12164
12165 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12166 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12167 al++;
12168 if (al >= end)
12169 goto process_value;
12170
12171 /* Parse the q value. */
12172 qvalue = parse_qvalue(al, &al);
12173
12174process_value:
12175
12176 /* If the new q value is the best q value, then store the associated
12177 * language in the response. If qvalue is the biggest value (1000),
12178 * break the process.
12179 */
12180 if (qvalue > best_q) {
12181 smp->data.str.str = (char *)w;
12182 smp->data.str.len = str - w;
12183 if (qvalue >= 1000)
12184 break;
12185 best_q = qvalue;
12186 }
12187
12188expect_comma:
12189
12190 /* Expect comma or end. If the end is detected, quit the loop. */
12191 while (al < end && *al != ',')
12192 al++;
12193 if (al >= end)
12194 break;
12195
12196 /* Comma is found, jump it and restart the analyzer. */
12197 al++;
12198 }
12199
12200 /* Set default value if required. */
12201 if (smp->data.str.len == 0 && args[1].type == ARGT_STR) {
12202 smp->data.str.str = args[1].data.str.str;
12203 smp->data.str.len = args[1].data.str.len;
12204 }
12205
12206 /* Return true only if a matching language was found. */
12207 return smp->data.str.len != 0;
12208}
12209
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12210/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12211static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12212{
12213 /* If the constant flag is set or if not size is avalaible at
12214 * the end of the buffer, copy the string in other buffer
12215 * before decoding.
12216 */
12217 if (smp->flags & SMP_F_CONST || smp->data.str.size <= smp->data.str.len) {
12218 struct chunk *str = get_trash_chunk();
12219 memcpy(str->str, smp->data.str.str, smp->data.str.len);
12220 smp->data.str.str = str->str;
12221 smp->data.str.size = str->size;
12222 smp->flags &= ~SMP_F_CONST;
12223 }
12224
12225 /* Add final \0 required by url_decode(), and convert the input string. */
12226 smp->data.str.str[smp->data.str.len] = '\0';
12227 smp->data.str.len = url_decode(smp->data.str.str);
12228 return 1;
12229}
12230
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]12231static int smp_conv_req_capture(const struct arg *args, struct sample *smp, void *private)
12232{
12233 struct proxy *fe = strm_fe(smp->strm);
12234 int idx, i;
12235 struct cap_hdr *hdr;
12236 int len;
12237
12238 if (!args || args->type != ARGT_UINT)
12239 return 0;
12240
12241 idx = args->data.uint;
12242
12243 /* Check the availibity of the capture id. */
12244 if (idx > fe->nb_req_cap - 1)
12245 return 0;
12246
12247 /* Look for the original configuration. */
12248 for (hdr = fe->req_cap, i = fe->nb_req_cap - 1;
12249 hdr != NULL && i != idx ;
12250 i--, hdr = hdr->next);
12251 if (!hdr)
12252 return 0;
12253
12254 /* check for the memory allocation */
12255 if (smp->strm->req_cap[hdr->index] == NULL)
12256 smp->strm->req_cap[hdr->index] = pool_alloc2(hdr->pool);
12257 if (smp->strm->req_cap[hdr->index] == NULL)
12258 return 0;
12259
12260 /* Check length. */
12261 len = smp->data.str.len;
12262 if (len > hdr->len)
12263 len = hdr->len;
12264
12265 /* Capture input data. */
12266 memcpy(smp->strm->req_cap[idx], smp->data.str.str, len);
12267 smp->strm->req_cap[idx][len] = '\0';
12268
12269 return 1;
12270}
12271
12272static int smp_conv_res_capture(const struct arg *args, struct sample *smp, void *private)
12273{
12274 struct proxy *fe = strm_fe(smp->strm);
12275 int idx, i;
12276 struct cap_hdr *hdr;
12277 int len;
12278
12279 if (!args || args->type != ARGT_UINT)
12280 return 0;
12281
12282 idx = args->data.uint;
12283
12284 /* Check the availibity of the capture id. */
12285 if (idx > fe->nb_rsp_cap - 1)
12286 return 0;
12287
12288 /* Look for the original configuration. */
12289 for (hdr = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12290 hdr != NULL && i != idx ;
12291 i--, hdr = hdr->next);
12292 if (!hdr)
12293 return 0;
12294
12295 /* check for the memory allocation */
12296 if (smp->strm->res_cap[hdr->index] == NULL)
12297 smp->strm->res_cap[hdr->index] = pool_alloc2(hdr->pool);
12298 if (smp->strm->res_cap[hdr->index] == NULL)
12299 return 0;
12300
12301 /* Check length. */
12302 len = smp->data.str.len;
12303 if (len > hdr->len)
12304 len = hdr->len;
12305
12306 /* Capture input data. */
12307 memcpy(smp->strm->res_cap[idx], smp->data.str.str, len);
12308 smp->strm->res_cap[idx][len] = '\0';
12309
12310 return 1;
12311}
12312
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12313/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12314 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12315 * the relevant part of the request line accordingly. Then it updates various
12316 * pointers to the next elements which were moved, and the total buffer length.
12317 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12318 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
12319 * error, though this can be revisited when this code is finally exploited.
12320 *
12321 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
12322 * query string and 3 to replace uri.
12323 *
12324 * In query string case, the mark question '?' must be set at the start of the
12325 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12326 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12327int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12328 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12329{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12330 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12331 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12332 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12333 int delta;
12334
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12335 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12336 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12337 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12338 cur_end = cur_ptr + txn->req.sl.rq.m_l;
12339
12340 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12341 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12342 txn->req.sl.rq.m_l += delta;
12343 txn->req.sl.rq.u += delta;
12344 txn->req.sl.rq.v += delta;
12345 break;
12346
12347 case 1: // path
12348 cur_ptr = http_get_path(txn);
12349 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12350 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12351
12352 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12353 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]12354 cur_end++;
12355
12356 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12357 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12358 txn->req.sl.rq.u_l += delta;
12359 txn->req.sl.rq.v += delta;
12360 break;
12361
12362 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12363 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12364 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12365 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12366 while (cur_ptr < cur_end && *cur_ptr != '?')
12367 cur_ptr++;
12368
12369 /* skip the question mark or indicate that we must insert it
12370 * (but only if the format string is not empty then).
12371 */
12372 if (cur_ptr < cur_end)
12373 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12374 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12375 offset = 0;
12376
12377 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12378 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12379 txn->req.sl.rq.u_l += delta;
12380 txn->req.sl.rq.v += delta;
12381 break;
12382
12383 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12384 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12385 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12386
12387 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12388 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12389 txn->req.sl.rq.u_l += delta;
12390 txn->req.sl.rq.v += delta;
12391 break;
12392
12393 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12394 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12395 }
12396
12397 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12398 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]12399 txn->req.sl.rq.l += delta;
12400 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12401 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12402 return 0;
12403}
12404
12405/* This function executes one of the set-{method,path,query,uri} actions. It
12406 * builds a string in the trash from the specified format string. It finds
12407 * the action to be performed in p[2], previously filled by function
12408 * parse_set_req_line(). The replacement action is excuted by the function
12409 * http_action_set_req_line_exec(). It always returns 1. If an error occurs
12410 * the action is canceled, but the rule processing continue.
12411 */
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12412int 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]12413{
12414 chunk_reset(&trash);
12415
12416 /* If we have to create a query string, prepare a '?'. */
12417 if (*(int *)&rule->arg.act.p[2] == 2)
12418 trash.str[trash.len++] = '?';
12419 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, (struct list *)&rule->arg.act.p[0]);
12420
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12421 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]12422 return 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12423}
12424
12425/* parse an http-request action among :
12426 * set-method
12427 * set-path
12428 * set-query
12429 * set-uri
12430 *
12431 * All of them accept a single argument of type string representing a log-format.
12432 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
12433 * head, and p[2] to store the action as an int (0=method, 1=path, 2=query, 3=uri).
12434 * It returns 0 on success, < 0 on error.
12435 */
12436int parse_set_req_line(const char **args, int *orig_arg, struct proxy *px, struct http_req_rule *rule, char **err)
12437{
12438 int cur_arg = *orig_arg;
12439
12440 rule->action = HTTP_REQ_ACT_CUSTOM_CONT;
12441
12442 switch (args[0][4]) {
12443 case 'm' :
12444 *(int *)&rule->arg.act.p[2] = 0;
12445 rule->action_ptr = http_action_set_req_line;
12446 break;
12447 case 'p' :
12448 *(int *)&rule->arg.act.p[2] = 1;
12449 rule->action_ptr = http_action_set_req_line;
12450 break;
12451 case 'q' :
12452 *(int *)&rule->arg.act.p[2] = 2;
12453 rule->action_ptr = http_action_set_req_line;
12454 break;
12455 case 'u' :
12456 *(int *)&rule->arg.act.p[2] = 3;
12457 rule->action_ptr = http_action_set_req_line;
12458 break;
12459 default:
12460 memprintf(err, "internal error: unhandled action '%s'", args[0]);
12461 return -1;
12462 }
12463
12464 if (!*args[cur_arg] ||
12465 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12466 memprintf(err, "expects exactly 1 argument <format>");
12467 return -1;
12468 }
12469
12470 LIST_INIT((struct list *)&rule->arg.act.p[0]);
12471 proxy->conf.args.ctx = ARGC_HRQ;
12472 parse_logformat_string(args[cur_arg], proxy, (struct list *)&rule->arg.act.p[0], LOG_OPT_HTTP,
12473 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
12474 proxy->conf.args.file, proxy->conf.args.line);
12475
12476 (*orig_arg)++;
12477 return 0;
12478}
12479
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12480/* This function executes the "capture" action. It executes a fetch expression,
12481 * turns the result into a string and puts it in a capture slot. It always
12482 * returns 1. If an error occurs the action is cancelled, but the rule
12483 * processing continues.
12484 */
12485int http_action_req_capture(struct http_req_rule *rule, struct proxy *px, struct stream *s)
12486{
12487 struct session *sess = s->sess;
12488 struct sample *key;
12489 struct sample_expr *expr = rule->arg.act.p[0];
12490 struct cap_hdr *h = rule->arg.act.p[1];
12491 char **cap = s->req_cap;
12492 int len;
12493
12494 key = sample_fetch_string(s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, expr);
12495 if (!key)
12496 return 1;
12497
12498 if (cap[h->index] == NULL)
12499 cap[h->index] = pool_alloc2(h->pool);
12500
12501 if (cap[h->index] == NULL) /* no more capture memory */
12502 return 1;
12503
12504 len = key->data.str.len;
12505 if (len > h->len)
12506 len = h->len;
12507
12508 memcpy(cap[h->index], key->data.str.str, len);
12509 cap[h->index][len] = 0;
12510 return 1;
12511}
12512
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12513/* This function executes the "capture" action and store the result in a
12514 * capture slot if exists. It executes a fetch expression, turns the result
12515 * into a string and puts it in a capture slot. It always returns 1. If an
12516 * error occurs the action is cancelled, but the rule processing continues.
12517 */
12518int http_action_req_capture_by_id(struct http_req_rule *rule, struct proxy *px, struct stream *s)
12519{
12520 struct session *sess = s->sess;
12521 struct sample *key;
12522 struct sample_expr *expr = rule->arg.act.p[0];
12523 struct cap_hdr *h;
12524 int idx = (long)rule->arg.act.p[1];
12525 char **cap = s->req_cap;
12526 struct proxy *fe = strm_fe(s);
12527 int len;
12528 int i;
12529
12530 /* Look for the original configuration. */
12531 for (h = fe->req_cap, i = fe->nb_req_cap - 1;
12532 h != NULL && i != idx ;
12533 i--, h = h->next);
12534 if (!h)
12535 return 1;
12536
12537 key = sample_fetch_string(s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, expr);
12538 if (!key)
12539 return 1;
12540
12541 if (cap[h->index] == NULL)
12542 cap[h->index] = pool_alloc2(h->pool);
12543
12544 if (cap[h->index] == NULL) /* no more capture memory */
12545 return 1;
12546
12547 len = key->data.str.len;
12548 if (len > h->len)
12549 len = h->len;
12550
12551 memcpy(cap[h->index], key->data.str.str, len);
12552 cap[h->index][len] = 0;
12553 return 1;
12554}
12555
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12556/* parse an "http-request capture" action. It takes a single argument which is
12557 * a sample fetch expression. It stores the expression into arg->act.p[0] and
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12558 * the allocated hdr_cap struct or the preallocated "id" into arg->act.p[1].
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12559 * It returns 0 on success, < 0 on error.
12560 */
12561int parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px, struct http_req_rule *rule, char **err)
12562{
12563 struct sample_expr *expr;
12564 struct cap_hdr *hdr;
12565 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]12566 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12567
12568 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12569 if (strcmp(args[cur_arg], "if") == 0 ||
12570 strcmp(args[cur_arg], "unless") == 0)
12571 break;
12572
12573 if (cur_arg < *orig_arg + 3) {
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12574 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12575 return -1;
12576 }
12577
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12578 cur_arg = *orig_arg;
12579 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12580 if (!expr)
12581 return -1;
12582
12583 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
12584 memprintf(err,
12585 "fetch method '%s' extracts information from '%s', none of which is available here",
12586 args[cur_arg-1], sample_src_names(expr->fetch->use));
12587 free(expr);
12588 return -1;
12589 }
12590
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12591 if (!args[cur_arg] || !*args[cur_arg]) {
12592 memprintf(err, "expects 'len or 'id'");
12593 free(expr);
12594 return -1;
12595 }
12596
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12597 if (strcmp(args[cur_arg], "len") == 0) {
12598 cur_arg++;
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12599
12600 if (!(px->cap & PR_CAP_FE)) {
12601 memprintf(err, "proxy '%s' has no frontend capability", px->id);
12602 return -1;
12603 }
12604
12605 proxy->conf.args.ctx = ARGC_CAP;
12606
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12607 if (!args[cur_arg]) {
12608 memprintf(err, "missing length value");
12609 free(expr);
12610 return -1;
12611 }
12612 /* we copy the table name for now, it will be resolved later */
12613 len = atoi(args[cur_arg]);
12614 if (len <= 0) {
12615 memprintf(err, "length must be > 0");
12616 free(expr);
12617 return -1;
12618 }
12619 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12620
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12621 if (!len) {
12622 memprintf(err, "a positive 'len' argument is mandatory");
12623 free(expr);
12624 return -1;
12625 }
12626
12627 hdr = calloc(sizeof(struct cap_hdr), 1);
12628 hdr->next = px->req_cap;
12629 hdr->name = NULL; /* not a header capture */
12630 hdr->namelen = 0;
12631 hdr->len = len;
12632 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12633 hdr->index = px->nb_req_cap++;
12634
12635 px->req_cap = hdr;
12636 px->to_log |= LW_REQHDR;
12637
12638 rule->action = HTTP_REQ_ACT_CUSTOM_CONT;
12639 rule->action_ptr = http_action_req_capture;
12640 rule->arg.act.p[0] = expr;
12641 rule->arg.act.p[1] = hdr;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12642 }
12643
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12644 else if (strcmp(args[cur_arg], "id") == 0) {
12645 int id;
12646 char *error;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12647
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12648 cur_arg++;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12649
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12650 if (!args[cur_arg]) {
12651 memprintf(err, "missing id value");
12652 free(expr);
12653 return -1;
12654 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12655
Thierry FOURNIER82bf70d2015-05-26 17:58:29 +0200[diff] [blame]12656 id = strtol(args[cur_arg], &error, 10);
12657 if (*error != '\0') {
12658 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12659 free(expr);
12660 return -1;
12661 }
12662 cur_arg++;
12663
12664 proxy->conf.args.ctx = ARGC_CAP;
12665
12666 rule->action = HTTP_REQ_ACT_CUSTOM_CONT;
12667 rule->action_ptr = http_action_req_capture_by_id;
12668 rule->arg.act.p[0] = expr;
12669 rule->arg.act.p[1] = (void *)(long)id;
12670 }
12671
12672 else {
12673 memprintf(err, "expects 'len' or 'id', found '%s'", args[cur_arg]);
12674 free(expr);
12675 return -1;
12676 }
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12677
12678 *orig_arg = cur_arg;
12679 return 0;
12680}
12681
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]12682/* This function executes the "capture" action and store the result in a
12683 * capture slot if exists. It executes a fetch expression, turns the result
12684 * into a string and puts it in a capture slot. It always returns 1. If an
12685 * error occurs the action is cancelled, but the rule processing continues.
12686 */
12687int http_action_res_capture_by_id(struct http_res_rule *rule, struct proxy *px, struct stream *s)
12688{
12689 struct session *sess = s->sess;
12690 struct sample *key;
12691 struct sample_expr *expr = rule->arg.act.p[0];
12692 struct cap_hdr *h;
12693 int idx = (long)rule->arg.act.p[1];
12694 char **cap = s->res_cap;
12695 struct proxy *fe = strm_fe(s);
12696 int len;
12697 int i;
12698
12699 /* Look for the original configuration. */
12700 for (h = fe->rsp_cap, i = fe->nb_rsp_cap - 1;
12701 h != NULL && i != idx ;
12702 i--, h = h->next);
12703 if (!h)
12704 return 1;
12705
12706 key = sample_fetch_string(s->be, sess, s, SMP_OPT_DIR_RES|SMP_OPT_FINAL, expr);
12707 if (!key)
12708 return 1;
12709
12710 if (cap[h->index] == NULL)
12711 cap[h->index] = pool_alloc2(h->pool);
12712
12713 if (cap[h->index] == NULL) /* no more capture memory */
12714 return 1;
12715
12716 len = key->data.str.len;
12717 if (len > h->len)
12718 len = h->len;
12719
12720 memcpy(cap[h->index], key->data.str.str, len);
12721 cap[h->index][len] = 0;
12722 return 1;
12723}
12724
12725/* parse an "http-response capture" action. It takes a single argument which is
12726 * a sample fetch expression. It stores the expression into arg->act.p[0] and
12727 * the allocated hdr_cap struct od the preallocated id into arg->act.p[1].
12728 * It returns 0 on success, < 0 on error.
12729 */
12730int parse_http_res_capture(const char **args, int *orig_arg, struct proxy *px, struct http_res_rule *rule, char **err)
12731{
12732 struct sample_expr *expr;
12733 int cur_arg;
12734 int id;
12735 char *error;
12736
12737 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12738 if (strcmp(args[cur_arg], "if") == 0 ||
12739 strcmp(args[cur_arg], "unless") == 0)
12740 break;
12741
12742 if (cur_arg < *orig_arg + 3) {
12743 memprintf(err, "expects <expression> [ 'len' <length> | id <idx> ]");
12744 return -1;
12745 }
12746
12747 cur_arg = *orig_arg;
12748 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12749 if (!expr)
12750 return -1;
12751
12752 if (!(expr->fetch->val & SMP_VAL_FE_HRS_HDR)) {
12753 memprintf(err,
12754 "fetch method '%s' extracts information from '%s', none of which is available here",
12755 args[cur_arg-1], sample_src_names(expr->fetch->use));
12756 free(expr);
12757 return -1;
12758 }
12759
12760 if (!args[cur_arg] || !*args[cur_arg]) {
12761 memprintf(err, "expects 'len or 'id'");
12762 free(expr);
12763 return -1;
12764 }
12765
12766 if (strcmp(args[cur_arg], "id") != 0) {
12767 memprintf(err, "expects 'id', found '%s'", args[cur_arg]);
12768 free(expr);
12769 return -1;
12770 }
12771
12772 cur_arg++;
12773
12774 if (!args[cur_arg]) {
12775 memprintf(err, "missing id value");
12776 free(expr);
12777 return -1;
12778 }
12779
12780 id = strtol(args[cur_arg], &error, 10);
12781 if (*error != '\0') {
12782 memprintf(err, "cannot parse id '%s'", args[cur_arg]);
12783 free(expr);
12784 return -1;
12785 }
12786 cur_arg++;
12787
12788 LIST_INIT((struct list *)&rule->arg.act.p[0]);
12789 proxy->conf.args.ctx = ARGC_CAP;
12790
12791 rule->action = HTTP_RES_ACT_CUSTOM_CONT;
12792 rule->action_ptr = http_action_res_capture_by_id;
12793 rule->arg.act.p[0] = expr;
12794 rule->arg.act.p[1] = (void *)(long)id;
12795
12796 *orig_arg = cur_arg;
12797 return 0;
12798}
12799
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12800/*
12801 * Return the struct http_req_action_kw associated to a keyword.
12802 */
12803struct http_req_action_kw *action_http_req_custom(const char *kw)
12804{
12805 if (!LIST_ISEMPTY(&http_req_keywords.list)) {
12806 struct http_req_action_kw_list *kw_list;
12807 int i;
12808
12809 list_for_each_entry(kw_list, &http_req_keywords.list, list) {
12810 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
12811 if (!strcmp(kw, kw_list->kw[i].kw))
12812 return &kw_list->kw[i];
12813 }
12814 }
12815 }
12816 return NULL;
12817}
12818
12819/*
12820 * Return the struct http_res_action_kw associated to a keyword.
12821 */
12822struct http_res_action_kw *action_http_res_custom(const char *kw)
12823{
12824 if (!LIST_ISEMPTY(&http_res_keywords.list)) {
12825 struct http_res_action_kw_list *kw_list;
12826 int i;
12827
12828 list_for_each_entry(kw_list, &http_res_keywords.list, list) {
12829 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
12830 if (!strcmp(kw, kw_list->kw[i].kw))
12831 return &kw_list->kw[i];
12832 }
12833 }
12834 }
12835 return NULL;
12836}
12837
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12838/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12839/* All supported ACL keywords must be declared here. */
12840/************************************************************************/
12841
12842/* Note: must not be declared <const> as its list will be overwritten.
12843 * Please take care of keeping this list alphabetically sorted.
12844 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12845static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12846 { "base", "base", PAT_MATCH_STR },
12847 { "base_beg", "base", PAT_MATCH_BEG },
12848 { "base_dir", "base", PAT_MATCH_DIR },
12849 { "base_dom", "base", PAT_MATCH_DOM },
12850 { "base_end", "base", PAT_MATCH_END },
12851 { "base_len", "base", PAT_MATCH_LEN },
12852 { "base_reg", "base", PAT_MATCH_REG },
12853 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]12854
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12855 { "cook", "req.cook", PAT_MATCH_STR },
12856 { "cook_beg", "req.cook", PAT_MATCH_BEG },
12857 { "cook_dir", "req.cook", PAT_MATCH_DIR },
12858 { "cook_dom", "req.cook", PAT_MATCH_DOM },
12859 { "cook_end", "req.cook", PAT_MATCH_END },
12860 { "cook_len", "req.cook", PAT_MATCH_LEN },
12861 { "cook_reg", "req.cook", PAT_MATCH_REG },
12862 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12863
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12864 { "hdr", "req.hdr", PAT_MATCH_STR },
12865 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
12866 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
12867 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
12868 { "hdr_end", "req.hdr", PAT_MATCH_END },
12869 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
12870 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
12871 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12872
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12873 /* these two declarations uses strings with list storage (in place
12874 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
12875 * and delete functions are relative to the list management. The parse
12876 * and match method are related to the corresponding fetch methods. This
12877 * is very particular ACL declaration mode.
12878 */
12879 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
12880 { "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]12881
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12882 { "path", "path", PAT_MATCH_STR },
12883 { "path_beg", "path", PAT_MATCH_BEG },
12884 { "path_dir", "path", PAT_MATCH_DIR },
12885 { "path_dom", "path", PAT_MATCH_DOM },
12886 { "path_end", "path", PAT_MATCH_END },
12887 { "path_len", "path", PAT_MATCH_LEN },
12888 { "path_reg", "path", PAT_MATCH_REG },
12889 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12890
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12891 { "req_ver", "req.ver", PAT_MATCH_STR },
12892 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12893
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12894 { "scook", "res.cook", PAT_MATCH_STR },
12895 { "scook_beg", "res.cook", PAT_MATCH_BEG },
12896 { "scook_dir", "res.cook", PAT_MATCH_DIR },
12897 { "scook_dom", "res.cook", PAT_MATCH_DOM },
12898 { "scook_end", "res.cook", PAT_MATCH_END },
12899 { "scook_len", "res.cook", PAT_MATCH_LEN },
12900 { "scook_reg", "res.cook", PAT_MATCH_REG },
12901 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12902
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12903 { "shdr", "res.hdr", PAT_MATCH_STR },
12904 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
12905 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
12906 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
12907 { "shdr_end", "res.hdr", PAT_MATCH_END },
12908 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
12909 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
12910 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12911
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12912 { "url", "url", PAT_MATCH_STR },
12913 { "url_beg", "url", PAT_MATCH_BEG },
12914 { "url_dir", "url", PAT_MATCH_DIR },
12915 { "url_dom", "url", PAT_MATCH_DOM },
12916 { "url_end", "url", PAT_MATCH_END },
12917 { "url_len", "url", PAT_MATCH_LEN },
12918 { "url_reg", "url", PAT_MATCH_REG },
12919 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12920
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12921 { "urlp", "urlp", PAT_MATCH_STR },
12922 { "urlp_beg", "urlp", PAT_MATCH_BEG },
12923 { "urlp_dir", "urlp", PAT_MATCH_DIR },
12924 { "urlp_dom", "urlp", PAT_MATCH_DOM },
12925 { "urlp_end", "urlp", PAT_MATCH_END },
12926 { "urlp_len", "urlp", PAT_MATCH_LEN },
12927 { "urlp_reg", "urlp", PAT_MATCH_REG },
12928 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12929
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]12930 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12931}};
12932
12933/************************************************************************/
12934/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12935/************************************************************************/
12936/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12937static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12938 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12939 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
12940 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
12941
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]12942 /* capture are allocated and are permanent in the stream */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12943 { "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]12944
12945 /* retrieve these captures from the HTTP logs */
12946 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12947 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12948 { "capture.req.ver", smp_fetch_capture_req_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12949
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12950 { "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]12951 { "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]12952
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12953 /* cookie is valid in both directions (eg: for "stick ...") but cook*
12954 * are only here to match the ACL's name, are request-only and are used
12955 * for ACL compatibility only.
12956 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12957 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12958 { "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]12959 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12960 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12961
12962 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
12963 * only here to match the ACL's name, are request-only and are used for
12964 * ACL compatibility only.
12965 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12966 { "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]12967 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12968 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
12969 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
12970
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]12971 { "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]12972 { "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]12973 { "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]12974 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12975 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]12976 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12977
12978 /* HTTP protocol on the request path */
12979 { "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]12980 { "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]12981
12982 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12983 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
12984 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12985
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]12986 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
12987 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
12988 { "req.body_size", smp_fetch_body_size, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]12989 { "req.body_param", smp_fetch_body_param, ARG1(0,STR), NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]12990
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12991 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12992 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
12993 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12994
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12995 /* 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]12996 { "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]12997 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12998 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12999
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13000 { "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]13001 { "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]13002 { "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]13003 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
13004 { "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]13005 { "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]13006 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
13007
13008 /* 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]13009 { "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]13010 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
13011 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
13012
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13013 { "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]13014 { "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]13015 { "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]13016 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
13017 { "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]13018 { "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]13019 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
13020
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13021 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13022 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13023 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
13024 { "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]13025 { "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]13026
13027 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13028 { "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]13029 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
13030 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
13031 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
13032
13033 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]13034 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]13035 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
13036 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13037 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
13038 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]13039 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13040 { "urlp" , smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
13041 { "urlp_val", smp_fetch_url_param_val, ARG2(0,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]13042 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]13043}};
13044
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13045
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13046/************************************************************************/
13047/* All supported converter keywords must be declared here. */
13048/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13049/* Note: must not be declared <const> as its list will be overwritten */
13050static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]13051 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR},
13052 { "language", sample_conv_q_prefered, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_T_STR},
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]13053 { "capture-req", smp_conv_req_capture, ARG1(1,UINT), NULL, SMP_T_STR, SMP_T_STR},
13054 { "capture-res", smp_conv_res_capture, ARG1(1,UINT), NULL, SMP_T_STR, SMP_T_STR},
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]13055 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13056 { NULL, NULL, 0, 0, 0 },
13057}};
13058
Thierry FOURNIER35ab2752015-05-28 13:22:03 +0200[diff] [blame]13059
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13060/************************************************************************/
13061/* All supported http-request action keywords must be declared here. */
13062/************************************************************************/
13063struct http_req_action_kw_list http_req_actions = {
13064 .scope = "http",
13065 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]13066 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13067 { "set-method", parse_set_req_line },
13068 { "set-path", parse_set_req_line },
13069 { "set-query", parse_set_req_line },
13070 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]13071 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13072 }
13073};
13074
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13075struct http_res_action_kw_list http_res_actions = {
13076 .scope = "http",
13077 .kw = {
13078 { "capture", parse_http_res_capture },
13079 { NULL, NULL }
13080 }
13081};
13082
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13083__attribute__((constructor))
13084static void __http_protocol_init(void)
13085{
13086 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]13087 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]13088 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]13089 http_req_keywords_register(&http_req_actions);
Thierry FOURNIERe80fada2015-05-26 18:06:31 +0200[diff] [blame]13090 http_res_keywords_register(&http_res_actions);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]13091}
13092
13093
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]13094/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]13095 * Local variables:
13096 * c-indent-level: 8
13097 * c-basic-offset: 8
13098 * End:
13099 */