Gitiles
Code Review Sign In
git01.mediatek.com / haproxy / 26f77e534c68388a55838f299719e25976a81fe8 / . / src / proto_http.c
blob: 3d41c562b2f4dfe0d4660ad538ac2810b6416422 [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 Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3683/* Executes the http-response rules <rules> for stream <s>, proxy <px> and
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3684 * transaction <txn>. Returns 3 states: HTTP_RULE_RES_CONT, HTTP_RULE_RES_YIELD
3685 * or HTTP_RULE_RES_STOP. If *CONT is returned, the process can continue the
3686 * evaluation of next rule list. If *STOP is returned, the process must stop
3687 * the evaluation. It may set the TX_SVDENY on txn->flags if it encounters a deny
3688 * rule. If *YIELD is returned, the czller must call again the function with
3689 * the same context.
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3690 */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3691static enum rule_result
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3692http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct stream *s)
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3693{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3694 struct session *sess = strm_sess(s);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3695 struct http_txn *txn = s->txn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3696 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3697 struct http_res_rule *rule;
3698 struct hdr_ctx ctx;
3699
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3700 /* If "the current_rule_list" match the executed rule list, we are in
3701 * resume condition. If a resume is needed it is always in the action
3702 * and never in the ACL or converters. In this case, we initialise the
3703 * current rule, and go to the action execution point.
3704 */
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3705 if (s->current_rule) {
3706 rule = s->current_rule;
3707 s->current_rule = NULL;
3708 if (s->current_rule_list == rules)
3709 goto resume_execution;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3710 }
3711 s->current_rule_list = rules;
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3712
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3713 list_for_each_entry(rule, rules, list) {
3714 if (rule->action >= HTTP_RES_ACT_MAX)
3715 continue;
3716
3717 /* check optional condition */
3718 if (rule->cond) {
3719 int ret;
3720
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]3721 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]3722 ret = acl_pass(ret);
3723
3724 if (rule->cond->pol == ACL_COND_UNLESS)
3725 ret = !ret;
3726
3727 if (!ret) /* condition not matched */
3728 continue;
3729 }
3730
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3731resume_execution:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3732 switch (rule->action) {
3733 case HTTP_RES_ACT_ALLOW:
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3734 return HTTP_RULE_RES_STOP; /* "allow" rules are OK */
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3735
3736 case HTTP_RES_ACT_DENY:
3737 txn->flags |= TX_SVDENY;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3738 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3739
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3740 case HTTP_RES_ACT_SET_NICE:
3741 s->task->nice = rule->arg.nice;
3742 break;
3743
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3744 case HTTP_RES_ACT_SET_TOS:
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3745 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3746 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]3747 break;
3748
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3749 case HTTP_RES_ACT_SET_MARK:
3750#ifdef SO_MARK
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]3751 if ((cli_conn = objt_conn(sess->origin)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3752 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]3753#endif
3754 break;
3755
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3756 case HTTP_RES_ACT_SET_LOGL:
3757 s->logs.level = rule->arg.loglevel;
3758 break;
3759
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3760 case HTTP_RES_ACT_REPLACE_HDR:
3761 case HTTP_RES_ACT_REPLACE_VAL:
Thierry FOURNIER5a33ac72015-03-16 23:54:35 +0100[diff] [blame]3762 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name,
3763 rule->arg.hdr_add.name_len,
3764 &rule->arg.hdr_add.fmt,
3765 &rule->arg.hdr_add.re, rule->action))
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3766 return HTTP_RULE_RES_STOP; /* note: we should report an error here */
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3767 break;
3768
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3769 case HTTP_RES_ACT_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3770 ctx.idx = 0;
3771 /* remove all occurrences of the header */
3772 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3773 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3774 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3775 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3776 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3777
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3778 case HTTP_RES_ACT_SET_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3779 case HTTP_RES_ACT_ADD_HDR:
3780 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3781 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3782 trash.len = rule->arg.hdr_add.name_len;
3783 trash.str[trash.len++] = ':';
3784 trash.str[trash.len++] = ' ';
3785 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]3786
3787 if (rule->action == HTTP_RES_ACT_SET_HDR) {
3788 /* remove all occurrences of the header */
3789 ctx.idx = 0;
3790 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3791 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3792 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3793 }
3794 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3795 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3796 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3797
3798 case HTTP_RES_ACT_DEL_ACL:
3799 case HTTP_RES_ACT_DEL_MAP: {
3800 struct pat_ref *ref;
3801 char *key;
3802 int len;
3803
3804 /* collect reference */
3805 ref = pat_ref_lookup(rule->arg.map.ref);
3806 if (!ref)
3807 continue;
3808
3809 /* collect key */
3810 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3811 key = trash.str;
3812 key[len] = '\0';
3813
3814 /* perform update */
3815 /* returned code: 1=ok, 0=ko */
3816 pat_ref_delete(ref, key);
3817
3818 break;
3819 }
3820
3821 case HTTP_RES_ACT_ADD_ACL: {
3822 struct pat_ref *ref;
3823 char *key;
3824 struct chunk *trash_key;
3825 int len;
3826
3827 trash_key = get_trash_chunk();
3828
3829 /* collect reference */
3830 ref = pat_ref_lookup(rule->arg.map.ref);
3831 if (!ref)
3832 continue;
3833
3834 /* collect key */
3835 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3836 key = trash_key->str;
3837 key[len] = '\0';
3838
3839 /* perform update */
3840 /* check if the entry already exists */
3841 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3842 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3843
3844 break;
3845 }
3846
3847 case HTTP_RES_ACT_SET_MAP: {
3848 struct pat_ref *ref;
3849 char *key, *value;
3850 struct chunk *trash_key, *trash_value;
3851 int len;
3852
3853 trash_key = get_trash_chunk();
3854 trash_value = get_trash_chunk();
3855
3856 /* collect reference */
3857 ref = pat_ref_lookup(rule->arg.map.ref);
3858 if (!ref)
3859 continue;
3860
3861 /* collect key */
3862 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3863 key = trash_key->str;
3864 key[len] = '\0';
3865
3866 /* collect value */
3867 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3868 value = trash_value->str;
3869 value[len] = '\0';
3870
3871 /* perform update */
3872 if (pat_ref_find_elt(ref, key) != NULL)
3873 /* update entry if it exists */
3874 pat_ref_set(ref, key, value, NULL);
3875 else
3876 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3877 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3878
3879 break;
3880 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3881
3882 case HTTP_RES_ACT_CUSTOM_CONT:
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3883 if (!rule->action_ptr(rule, px, s)) {
Willy Tarreau152b81e2015-04-20 13:26:17 +0200[diff] [blame]3884 s->current_rule = rule;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]3885 return HTTP_RULE_RES_YIELD;
3886 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3887 break;
3888
3889 case HTTP_RES_ACT_CUSTOM_STOP:
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]3890 rule->action_ptr(rule, px, s);
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3891 return HTTP_RULE_RES_STOP;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3892 }
3893 }
3894
3895 /* we reached the end of the rules, nothing to report */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]3896 return HTTP_RULE_RES_CONT;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3897}
3898
3899
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3900/* Perform an HTTP redirect based on the information in <rule>. The function
3901 * returns non-zero on success, or zero in case of a, irrecoverable error such
3902 * as too large a request to build a valid response.
3903 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]3904static 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]3905{
3906 struct http_msg *msg = &txn->req;
3907 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3908 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3909
3910 /* build redirect message */
3911 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3912 case 308:
3913 msg_fmt = HTTP_308;
3914 break;
3915 case 307:
3916 msg_fmt = HTTP_307;
3917 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3918 case 303:
3919 msg_fmt = HTTP_303;
3920 break;
3921 case 301:
3922 msg_fmt = HTTP_301;
3923 break;
3924 case 302:
3925 default:
3926 msg_fmt = HTTP_302;
3927 break;
3928 }
3929
3930 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3931 return 0;
3932
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3933 location = trash.str + trash.len;
3934
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3935 switch(rule->type) {
3936 case REDIRECT_TYPE_SCHEME: {
3937 const char *path;
3938 const char *host;
3939 struct hdr_ctx ctx;
3940 int pathlen;
3941 int hostlen;
3942
3943 host = "";
3944 hostlen = 0;
3945 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]3946 if (http_find_header2("Host", 4, txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3947 host = ctx.line + ctx.val;
3948 hostlen = ctx.vlen;
3949 }
3950
3951 path = http_get_path(txn);
3952 /* build message using path */
3953 if (path) {
3954 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3955 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3956 int qs = 0;
3957 while (qs < pathlen) {
3958 if (path[qs] == '?') {
3959 pathlen = qs;
3960 break;
3961 }
3962 qs++;
3963 }
3964 }
3965 } else {
3966 path = "/";
3967 pathlen = 1;
3968 }
3969
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3970 if (rule->rdr_str) { /* this is an old "redirect" rule */
3971 /* check if we can add scheme + "://" + host + path */
3972 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3973 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3974
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3975 /* add scheme */
3976 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3977 trash.len += rule->rdr_len;
3978 }
3979 else {
3980 /* add scheme with executing log format */
3981 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]3982
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3983 /* check if we can add scheme + "://" + host + path */
3984 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3985 return 0;
3986 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3987 /* add "://" */
3988 memcpy(trash.str + trash.len, "://", 3);
3989 trash.len += 3;
3990
3991 /* add host */
3992 memcpy(trash.str + trash.len, host, hostlen);
3993 trash.len += hostlen;
3994
3995 /* add path */
3996 memcpy(trash.str + trash.len, path, pathlen);
3997 trash.len += pathlen;
3998
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3999 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4000 if (trash.len && trash.str[trash.len - 1] != '/' &&
4001 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4002 if (trash.len > trash.size - 5)
4003 return 0;
4004 trash.str[trash.len] = '/';
4005 trash.len++;
4006 }
4007
4008 break;
4009 }
4010 case REDIRECT_TYPE_PREFIX: {
4011 const char *path;
4012 int pathlen;
4013
4014 path = http_get_path(txn);
4015 /* build message using path */
4016 if (path) {
4017 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
4018 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
4019 int qs = 0;
4020 while (qs < pathlen) {
4021 if (path[qs] == '?') {
4022 pathlen = qs;
4023 break;
4024 }
4025 qs++;
4026 }
4027 }
4028 } else {
4029 path = "/";
4030 pathlen = 1;
4031 }
4032
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4033 if (rule->rdr_str) { /* this is an old "redirect" rule */
4034 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
4035 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4036
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4037 /* add prefix. Note that if prefix == "/", we don't want to
4038 * add anything, otherwise it makes it hard for the user to
4039 * configure a self-redirection.
4040 */
4041 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
4042 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4043 trash.len += rule->rdr_len;
4044 }
4045 }
4046 else {
4047 /* add prefix with executing log format */
4048 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
4049
4050 /* Check length */
4051 if (trash.len + pathlen > trash.size - 4)
4052 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4053 }
4054
4055 /* add path */
4056 memcpy(trash.str + trash.len, path, pathlen);
4057 trash.len += pathlen;
4058
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4059 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4060 if (trash.len && trash.str[trash.len - 1] != '/' &&
4061 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
4062 if (trash.len > trash.size - 5)
4063 return 0;
4064 trash.str[trash.len] = '/';
4065 trash.len++;
4066 }
4067
4068 break;
4069 }
4070 case REDIRECT_TYPE_LOCATION:
4071 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4072 if (rule->rdr_str) { /* this is an old "redirect" rule */
4073 if (trash.len + rule->rdr_len > trash.size - 4)
4074 return 0;
4075
4076 /* add location */
4077 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
4078 trash.len += rule->rdr_len;
4079 }
4080 else {
4081 /* add location with executing log format */
4082 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]4083
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4084 /* Check left length */
4085 if (trash.len > trash.size - 4)
4086 return 0;
4087 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4088 break;
4089 }
4090
4091 if (rule->cookie_len) {
4092 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
4093 trash.len += 14;
4094 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
4095 trash.len += rule->cookie_len;
4096 memcpy(trash.str + trash.len, "\r\n", 2);
4097 trash.len += 2;
4098 }
4099
4100 /* add end of headers and the keep-alive/close status.
4101 * We may choose to set keep-alive if the Location begins
4102 * with a slash, because the client will come back to the
4103 * same server.
4104 */
4105 txn->status = rule->code;
4106 /* let's log the request time */
4107 s->logs.tv_request = now;
4108
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]4109 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4110 (msg->flags & HTTP_MSGF_XFER_LEN) &&
4111 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
4112 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4113 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4114 /* keep-alive possible */
4115 if (!(msg->flags & HTTP_MSGF_VER_11)) {
4116 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4117 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
4118 trash.len += 30;
4119 } else {
4120 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
4121 trash.len += 24;
4122 }
4123 }
4124 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
4125 trash.len += 4;
4126 bo_inject(txn->rsp.chn, trash.str, trash.len);
4127 /* "eat" the request */
4128 bi_fast_delete(txn->req.chn->buf, msg->sov);
Willy Tarreau6d8bac72014-04-25 12:19:32 +0200[diff] [blame]4129 msg->next -= msg->sov;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4130 msg->sov = 0;
4131 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4132 s->res.analysers = AN_RES_HTTP_XFER_BODY;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4133 txn->req.msg_state = HTTP_MSG_CLOSED;
4134 txn->rsp.msg_state = HTTP_MSG_DONE;
4135 } else {
4136 /* keep-alive not possible */
4137 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
4138 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
4139 trash.len += 29;
4140 } else {
4141 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
4142 trash.len += 23;
4143 }
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4144 stream_int_retnclose(&s->si[0], &trash);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4145 txn->req.chn->analysers = 0;
4146 }
4147
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4148 if (!(s->flags & SF_ERR_MASK))
4149 s->flags |= SF_ERR_LOCAL;
4150 if (!(s->flags & SF_FINST_MASK))
4151 s->flags |= SF_FINST_R;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4152
4153 return 1;
4154}
4155
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4156/* This stream analyser runs all HTTP request processing which is common to
4157 * frontends and backends, which means blocking ACLs, filters, connection-close,
4158 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4159 * 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]4160 * either needs more data or wants to immediately abort the request (eg: deny,
4161 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4162 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4163int 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]4164{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4165 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4166 struct http_txn *txn = s->txn;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4167 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4168 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4169 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4170 enum rule_result verdict;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4171
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4172 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4173 /* we need more data */
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4174 goto return_prx_yield;
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4175 }
4176
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4177 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]4178 now_ms, __FUNCTION__,
4179 s,
4180 req,
4181 req->rex, req->wex,
4182 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4183 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4184 req->analysers);
4185
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4186 /* just in case we have some per-backend tracking */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4187 stream_inc_be_http_req_ctr(s);
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4188
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4189 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4190 if (!LIST_ISEMPTY(&px->http_req_rules)) {
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4191 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4192
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4193 switch (verdict) {
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4194 case HTTP_RULE_RES_YIELD: /* some data miss, call the function later. */
4195 goto return_prx_yield;
4196
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4197 case HTTP_RULE_RES_CONT:
4198 case HTTP_RULE_RES_STOP: /* nothing to do */
4199 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4200
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4201 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4202 if (txn->flags & TX_CLTARPIT)
4203 goto tarpit;
4204 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4205
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4206 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4207 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4208
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4209 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4210 goto done;
4211
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4212 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4213 goto return_bad_req;
4214 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4215 }
4216
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4217 /* OK at this stage, we know that the request was accepted according to
4218 * the http-request rules, we can check for the stats. Note that the
4219 * URI is detected *before* the req* rules in order not to be affected
4220 * by a possible reqrep, while they are processed *after* so that a
4221 * reqdeny can still block them. This clearly needs to change in 1.6!
4222 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4223 if (stats_check_uri(&s->si[1], txn, px)) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4224 s->target = &http_stats_applet.obj_type;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4225 if (unlikely(!stream_int_register_handler(&s->si[1], objt_applet(s->target)))) {
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4226 txn->status = 500;
4227 s->logs.tv_request = now;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4228 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4229
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4230 if (!(s->flags & SF_ERR_MASK))
4231 s->flags |= SF_ERR_RESOURCE;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4232 goto return_prx_cond;
4233 }
4234
4235 /* parse the whole stats request and extract the relevant information */
4236 http_handle_stats(s, req);
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]4237 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4238 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4239
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4240 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4241 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4242
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4243 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4244 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4245 }
4246
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4247 /* evaluate the req* rules except reqadd */
4248 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4249 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4250 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4251
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4252 if (txn->flags & TX_CLDENY)
4253 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4254
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4255 if (txn->flags & TX_CLTARPIT)
4256 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4257 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4258
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4259 /* add request headers from the rule sets in the same order */
4260 list_for_each_entry(wl, &px->req_add, list) {
4261 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4262 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]4263 ret = acl_pass(ret);
4264 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4265 ret = !ret;
4266 if (!ret)
4267 continue;
4268 }
4269
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4270 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4271 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4272 }
4273
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4274
4275 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4276 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4277 /* process the stats request now */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4278 if (sess->fe == s->be) /* report it if the request was intercepted by the frontend */
4279 sess->fe->fe_counters.intercepted_req++;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4280
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4281 if (!(s->flags & SF_ERR_MASK)) // this is not really an error but it is
4282 s->flags |= SF_ERR_LOCAL; // to mark that it comes from the proxy
4283 if (!(s->flags & SF_FINST_MASK))
4284 s->flags |= SF_FINST_R;
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4285
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4286 /* we may want to compress the stats page */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4287 if (sess->fe->comp || s->be->comp)
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4288 select_compression_request_header(s, req->buf);
4289
4290 /* 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]4291 req->analysers = (req->analysers & AN_REQ_HTTP_BODY) | AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4292 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4293 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4294
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4295 /* check whether we have some ACLs set to redirect this request */
4296 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4297 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4298 int ret;
4299
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]4300 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]4301 ret = acl_pass(ret);
4302 if (rule->cond->pol == ACL_COND_UNLESS)
4303 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4304 if (!ret)
4305 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4306 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4307 if (!http_apply_redirect_rule(rule, s, txn))
4308 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4309 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4310 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4311
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4312 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4313 * If this happens, then the data will not come immediately, so we must
4314 * send all what we have without waiting. Note that due to the small gain
4315 * 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]4316 * 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]4317 * itself once used.
4318 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4319 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4320
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4321 done: /* done with this analyser, continue with next ones that the calling
4322 * points will have set, if any.
4323 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4324 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4325 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4326 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4327 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4328
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4329 tarpit:
4330 /* When a connection is tarpitted, we use the tarpit timeout,
4331 * which may be the same as the connect timeout if unspecified.
4332 * If unset, then set it to zero because we really want it to
4333 * eventually expire. We build the tarpit as an analyser.
4334 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4335 channel_erase(&s->req);
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4336
4337 /* wipe the request out so that we can drop the connection early
4338 * if the client closes first.
4339 */
4340 channel_dont_connect(req);
4341 req->analysers = 0; /* remove switching rules etc... */
4342 req->analysers |= AN_REQ_HTTP_TARPIT;
4343 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4344 if (!req->analyse_exp)
4345 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4346 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4347 sess->fe->fe_counters.denied_req++;
4348 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4349 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4350 if (sess->listener->counters)
4351 sess->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4352 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4353
4354 deny: /* this request was blocked (denied) */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4355 txn->flags |= TX_CLDENY;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]4356 txn->status = http_err_codes[txn->rule_deny_status];
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4357 s->logs.tv_request = now;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]4358 stream_int_retnclose(&s->si[0], http_error_message(s, txn->rule_deny_status));
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4359 stream_inc_http_err_ctr(s);
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4360 sess->fe->fe_counters.denied_req++;
4361 if (sess->fe != s->be)
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4362 s->be->be_counters.denied_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4363 if (sess->listener->counters)
4364 sess->listener->counters->denied_req++;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4365 goto return_prx_cond;
4366
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4367 return_bad_req:
4368 /* We centralize bad requests processing here */
4369 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4370 /* we detected a parsing error. We want to archive this request
4371 * in the dedicated proxy area for later troubleshooting.
4372 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4373 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]4374 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4375
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4376 txn->req.msg_state = HTTP_MSG_ERROR;
4377 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4378 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4379
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4380 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4381 if (sess->listener->counters)
4382 sess->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4383
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4384 return_prx_cond:
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4385 if (!(s->flags & SF_ERR_MASK))
4386 s->flags |= SF_ERR_PRXCOND;
4387 if (!(s->flags & SF_FINST_MASK))
4388 s->flags |= SF_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4389
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4390 req->analysers = 0;
4391 req->analyse_exp = TICK_ETERNITY;
4392 return 0;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]4393
4394 return_prx_yield:
4395 channel_dont_connect(req);
4396 return 0;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4397}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4398
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4399/* This function performs all the processing enabled for the current request.
4400 * It returns 1 if the processing can continue on next analysers, or zero if it
4401 * needs more data, encounters an error, or wants to immediately abort the
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4402 * request. It relies on buffers flags, and updates s->req.analysers.
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4403 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4404int http_process_request(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4405{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4406 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4407 struct http_txn *txn = s->txn;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4408 struct http_msg *msg = &txn->req;
Willy Tarreauee335e62015-04-21 18:15:13 +0200[diff] [blame]4409 struct connection *cli_conn = objt_conn(strm_sess(s)->origin);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4410
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4411 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4412 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4413 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4414 return 0;
4415 }
4416
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4417 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]4418 now_ms, __FUNCTION__,
4419 s,
4420 req,
4421 req->rex, req->wex,
4422 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4423 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4424 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4425
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4426 if (sess->fe->comp || s->be->comp)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]4427 select_compression_request_header(s, req->buf);
4428
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4429 /*
4430 * Right now, we know that we have processed the entire headers
4431 * and that unwanted requests have been filtered out. We can do
4432 * whatever we want with the remaining request. Also, now we
4433 * may have separate values for ->fe, ->be.
4434 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4435
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4436 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4437 * If HTTP PROXY is set we simply get remote server address parsing
4438 * incoming request. Note that this requires that a connection is
4439 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4440 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4441 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SF_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4442 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4443 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4444
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4445 /* Note that for now we don't reuse existing proxy connections */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4446 if (unlikely((conn = si_alloc_conn(&s->si[1], 0)) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4447 txn->req.msg_state = HTTP_MSG_ERROR;
4448 txn->status = 500;
4449 req->analysers = 0;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4450 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4451
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4452 if (!(s->flags & SF_ERR_MASK))
4453 s->flags |= SF_ERR_RESOURCE;
4454 if (!(s->flags & SF_FINST_MASK))
4455 s->flags |= SF_FINST_R;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4456
4457 return 0;
4458 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4459
4460 path = http_get_path(txn);
4461 url2sa(req->buf->p + msg->sl.rq.u,
4462 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4463 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4464 /* if the path was found, we have to remove everything between
4465 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4466 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4467 * u_l characters by a single "/".
4468 */
4469 if (path) {
4470 char *cur_ptr = req->buf->p;
4471 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4472 int delta;
4473
4474 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4475 http_msg_move_end(&txn->req, delta);
4476 cur_end += delta;
4477 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4478 goto return_bad_req;
4479 }
4480 else {
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,
4486 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4487 http_msg_move_end(&txn->req, delta);
4488 cur_end += delta;
4489 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4490 goto return_bad_req;
4491 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4492 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4493
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4494 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4495 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4496 * Note that doing so might move headers in the request, but
4497 * the fields will stay coherent and the URI will not move.
4498 * This should only be performed in the backend.
4499 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4500 if ((s->be->cookie_name || s->be->appsession_name || sess->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4501 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
4502 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4503
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4504 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4505 * 8: the appsession cookie was looked up very early in 1.2,
4506 * so let's do the same now.
4507 */
4508
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4509 /* It needs to look into the URI unless persistence must be ignored */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4510 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4511 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]4512 }
4513
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4514 /* add unique-id if "header-unique-id" is specified */
4515
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4516 if (!LIST_ISEMPTY(&sess->fe->format_unique_id)) {
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4517 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4518 goto return_bad_req;
4519 s->unique_id[0] = '\0';
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4520 build_logline(s, s->unique_id, UNIQUEID_LEN, &sess->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4521 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4522
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4523 if (sess->fe->header_unique_id && s->unique_id) {
4524 chunk_printf(&trash, "%s: %s", sess->fe->header_unique_id, s->unique_id);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4525 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4526 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4527 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]4528 goto return_bad_req;
4529 }
4530
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4531 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4532 * 9: add X-Forwarded-For if either the frontend or the backend
4533 * asks for it.
4534 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4535 if ((sess->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4536 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4537 if (!((sess->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
4538 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : sess->fe->fwdfor_hdr_name,
4539 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]4540 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4541 /* The header is set to be added only if none is present
4542 * and we found it, so don't do anything.
4543 */
4544 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4545 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4546 /* Add an X-Forwarded-For header unless the source IP is
4547 * in the 'except' network range.
4548 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4549 if ((!sess->fe->except_mask.s_addr ||
4550 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & sess->fe->except_mask.s_addr)
4551 != sess->fe->except_net.s_addr) &&
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4552 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4553 (((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]4554 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4555 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4556 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4557 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4558
4559 /* Note: we rely on the backend to get the header name to be used for
4560 * x-forwarded-for, because the header is really meant for the backends.
4561 * However, if the backend did not specify any option, we have to rely
4562 * on the frontend's header name.
4563 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4564 if (s->be->fwdfor_hdr_len) {
4565 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4566 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4567 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4568 len = sess->fe->fwdfor_hdr_len;
4569 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4570 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4571 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]4572
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4573 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]4574 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4575 }
4576 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4577 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4578 /* FIXME: for the sake of completeness, we should also support
4579 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4580 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4581 int len;
4582 char pn[INET6_ADDRSTRLEN];
4583 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4584 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4585 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4586
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4587 /* Note: we rely on the backend to get the header name to be used for
4588 * x-forwarded-for, because the header is really meant for the backends.
4589 * However, if the backend did not specify any option, we have to rely
4590 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4591 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4592 if (s->be->fwdfor_hdr_len) {
4593 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4594 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4595 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4596 len = sess->fe->fwdfor_hdr_len;
4597 memcpy(trash.str, sess->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4598 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4599 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4600
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4601 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]4602 goto return_bad_req;
4603 }
4604 }
4605
4606 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4607 * 10: add X-Original-To if either the frontend or the backend
4608 * asks for it.
4609 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4610 if ((sess->fe->options | s->be->options) & PR_O_ORGTO) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4611
4612 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4613 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4614 /* Add an X-Original-To header unless the destination IP is
4615 * in the 'except' network range.
4616 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4617 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4618
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4619 if (cli_conn->addr.to.ss_family == AF_INET &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4620 ((!sess->fe->except_mask_to.s_addr ||
4621 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & sess->fe->except_mask_to.s_addr)
4622 != sess->fe->except_to.s_addr) &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4623 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4624 (((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]4625 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4626 int len;
4627 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4628 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4629
4630 /* Note: we rely on the backend to get the header name to be used for
4631 * x-original-to, because the header is really meant for the backends.
4632 * However, if the backend did not specify any option, we have to rely
4633 * on the frontend's header name.
4634 */
4635 if (s->be->orgto_hdr_len) {
4636 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4637 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4638 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4639 len = sess->fe->orgto_hdr_len;
4640 memcpy(trash.str, sess->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4641 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4642 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]4643
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4644 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]4645 goto return_bad_req;
4646 }
4647 }
4648 }
4649
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4650 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4651 * If an "Upgrade" token is found, the header is left untouched in order not to have
4652 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4653 * "Upgrade" is present in the Connection header.
4654 */
4655 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4656 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4657 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4658 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4659 unsigned int want_flags = 0;
4660
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4661 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4662 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4663 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4664 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4665 !((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4666 want_flags |= TX_CON_CLO_SET;
4667 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4668 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4669 ((sess->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4670 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4671 ((sess->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4672 want_flags |= TX_CON_KAL_SET;
4673 }
4674
4675 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4676 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4677 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4678
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4679
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4680 /* If we have no server assigned yet and we're balancing on url_param
4681 * with a POST request, we may be interested in checking the body for
4682 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4683 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4684 if (!(s->flags & (SF_ASSIGNED|SF_DIRECT)) &&
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4685 s->txn->meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4686 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4687 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4688 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4689 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4690
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4691 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4692 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4693#ifdef TCP_QUICKACK
4694 /* We expect some data from the client. Unless we know for sure
4695 * we already have a full request, we have to re-enable quick-ack
4696 * in case we previously disabled it, otherwise we might cause
4697 * the client to delay further data.
4698 */
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4699 if ((sess->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4700 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4701 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4702 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4703 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4704#endif
4705 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4706
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4707 /*************************************************************
4708 * OK, that's finished for the headers. We have done what we *
4709 * could. Let's switch to the DATA state. *
4710 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4711 req->analyse_exp = TICK_ETERNITY;
4712 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4713
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4714 /* if the server closes the connection, we want to immediately react
4715 * and close the socket to save packets and syscalls.
4716 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4717 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4718 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4719
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4720 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4721 /* OK let's go on with the BODY now */
4722 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4723
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4724 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4725 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4726 /* we detected a parsing error. We want to archive this request
4727 * in the dedicated proxy area for later troubleshooting.
4728 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4729 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]4730 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4731
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4732 txn->req.msg_state = HTTP_MSG_ERROR;
4733 txn->status = 400;
4734 req->analysers = 0;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4735 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4736
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4737 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4738 if (sess->listener->counters)
4739 sess->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4740
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4741 if (!(s->flags & SF_ERR_MASK))
4742 s->flags |= SF_ERR_PRXCOND;
4743 if (!(s->flags & SF_FINST_MASK))
4744 s->flags |= SF_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4745 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4746}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4747
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4748/* This function is an analyser which processes the HTTP tarpit. It always
4749 * returns zero, at the beginning because it prevents any other processing
4750 * from occurring, and at the end because it terminates the request.
4751 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4752int http_process_tarpit(struct stream *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4753{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4754 struct http_txn *txn = s->txn;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4755
4756 /* This connection is being tarpitted. The CLIENT side has
4757 * already set the connect expiration date to the right
4758 * timeout. We just have to check that the client is still
4759 * there and that the timeout has not expired.
4760 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4761 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4762 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4763 !tick_is_expired(req->analyse_exp, now_ms))
4764 return 0;
4765
4766 /* We will set the queue timer to the time spent, just for
4767 * logging purposes. We fake a 500 server error, so that the
4768 * attacker will not suspect his connection has been tarpitted.
4769 * It will not cause trouble to the logs because we can exclude
4770 * the tarpitted connections by filtering on the 'PT' status flags.
4771 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4772 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4773
4774 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4775 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4776 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4777
4778 req->analysers = 0;
4779 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4780
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4781 if (!(s->flags & SF_ERR_MASK))
4782 s->flags |= SF_ERR_PRXCOND;
4783 if (!(s->flags & SF_FINST_MASK))
4784 s->flags |= SF_FINST_T;
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4785 return 0;
4786}
4787
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4788/* This function is an analyser which waits for the HTTP request body. It waits
4789 * for either the buffer to be full, or the full advertised contents to have
4790 * reached the buffer. It must only be called after the standard HTTP request
4791 * processing has occurred, because it expects the request to be parsed and will
4792 * look for the Expect header. It may send a 100-Continue interim response. It
4793 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4794 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4795 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4796 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4797int http_wait_for_request_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4798{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4799 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4800 struct http_txn *txn = s->txn;
4801 struct http_msg *msg = &s->txn->req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4802
4803 /* We have to parse the HTTP request body to find any required data.
4804 * "balance url_param check_post" should have been the only way to get
4805 * into this. We were brought here after HTTP header analysis, so all
4806 * related structures are ready.
4807 */
4808
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4809 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4810 /* This is the first call */
4811 if (msg->msg_state < HTTP_MSG_BODY)
4812 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4813
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4814 if (msg->msg_state < HTTP_MSG_100_SENT) {
4815 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4816 * send an HTTP/1.1 100 Continue intermediate response.
4817 */
4818 if (msg->flags & HTTP_MSGF_VER_11) {
4819 struct hdr_ctx ctx;
4820 ctx.idx = 0;
4821 /* Expect is allowed in 1.1, look for it */
4822 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4823 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]4824 bo_inject(&s->res, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4825 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4826 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4827 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4828 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4829
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4830 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4831 * req->buf->p still points to the beginning of the message. We
4832 * must save the body in msg->next because it survives buffer
4833 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4834 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4835 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4836
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4837 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4838 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4839 else
4840 msg->msg_state = HTTP_MSG_DATA;
4841 }
4842
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4843 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4844 /* We're in content-length mode, we just have to wait for enough data. */
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4845 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4846 goto missing_data;
4847
4848 /* OK we have everything we need now */
4849 goto http_end;
4850 }
4851
4852 /* OK here we're parsing a chunked-encoded message */
4853
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4854 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4855 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4856 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4857 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4858 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4859 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4860
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4861 if (!ret)
4862 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4863 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4864 stream_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4865 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4866 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4867 }
4868
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4869 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4870 * We have the first data byte is in msg->sov + msg->sol. We're waiting
4871 * for at least a whole chunk or the whole content length bytes after
4872 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4873 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4874 if (msg->msg_state == HTTP_MSG_TRAILERS)
4875 goto http_end;
4876
Willy Tarreaue115b492015-05-01 23:05:14 +0200[diff] [blame]4877 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4878 goto http_end;
4879
4880 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4881 /* we get here if we need to wait for more data. If the buffer is full,
4882 * we have the maximum we can expect.
4883 */
4884 if (buffer_full(req->buf, global.tune.maxrewrite))
4885 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4886
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4887 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4888 txn->status = 408;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4889 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4890
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4891 if (!(s->flags & SF_ERR_MASK))
4892 s->flags |= SF_ERR_CLITO;
4893 if (!(s->flags & SF_FINST_MASK))
4894 s->flags |= SF_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4895 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4896 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4897
4898 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4899 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4900 /* Not enough data. We'll re-use the http-request
4901 * timeout here. Ideally, we should set the timeout
4902 * relative to the accept() date. We just set the
4903 * request timeout once at the beginning of the
4904 * request.
4905 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4906 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4907 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4908 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4909 return 0;
4910 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4911
4912 http_end:
4913 /* The situation will not evolve, so let's give up on the analysis. */
4914 s->logs.tv_request = now; /* update the request timer to reflect full request */
4915 req->analysers &= ~an_bit;
4916 req->analyse_exp = TICK_ETERNITY;
4917 return 1;
4918
4919 return_bad_req: /* let's centralize all bad requests */
4920 txn->req.msg_state = HTTP_MSG_ERROR;
4921 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]4922 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4923
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]4924 if (!(s->flags & SF_ERR_MASK))
4925 s->flags |= SF_ERR_PRXCOND;
4926 if (!(s->flags & SF_FINST_MASK))
4927 s->flags |= SF_FINST_R;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4928
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4929 return_err_msg:
4930 req->analysers = 0;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]4931 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]4932 if (sess->listener->counters)
4933 sess->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4934 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4935}
4936
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4937/* send a server's name with an outgoing request over an established connection.
4938 * Note: this function is designed to be called once the request has been scheduled
4939 * for being forwarded. This is the reason why it rewinds the buffer before
4940 * proceeding.
4941 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4942int 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]4943
4944 struct hdr_ctx ctx;
4945
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4946 char *hdr_name = be->server_id_hdr_name;
4947 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4948 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4949 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4950 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4951
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4952 ctx.idx = 0;
4953
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4954 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4955 if (old_o) {
4956 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4957 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4958 txn->req.next += old_o;
4959 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4960 }
4961
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4962 old_i = chn->buf->i;
4963 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]4964 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4965 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4966 }
4967
4968 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4969 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4970 memcpy(hdr_val, hdr_name, hdr_name_len);
4971 hdr_val += hdr_name_len;
4972 *hdr_val++ = ':';
4973 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4974 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4975 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]4976
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4977 if (old_o) {
4978 /* If this was a forwarded request, we must readjust the amount of
4979 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4980 * variations. Note that the current state is >= HTTP_MSG_BODY,
4981 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4982 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4983 old_o += chn->buf->i - old_i;
4984 b_adv(chn->buf, old_o);
4985 txn->req.next -= old_o;
4986 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4987 }
4988
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4989 return 0;
4990}
4991
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4992/* Terminate current transaction and prepare a new one. This is very tricky
4993 * right now but it works.
4994 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]4995void http_end_txn_clean_session(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4996{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]4997 int prev_status = s->txn->status;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]4998 struct proxy *fe = strm_fe(s);
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4999
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5000 /* FIXME: We need a more portable way of releasing a backend's and a
5001 * server's connections. We need a safer way to reinitialize buffer
5002 * flags. We also need a more accurate method for computing per-request
5003 * data.
5004 */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5005
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5006 /* unless we're doing keep-alive, we want to quickly close the connection
5007 * to the server.
5008 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5009 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5010 !si_conn_ready(&s->si[1])) {
5011 s->si[1].flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
5012 si_shutr(&s->si[1]);
5013 si_shutw(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5014 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5015
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5016 if (s->flags & SF_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5017 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]5018 if (unlikely(s->srv_conn))
5019 sess_change_server(s, NULL);
5020 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5021
5022 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5023 stream_process_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5024
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5025 if (s->txn->status) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5026 int n;
5027
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5028 n = s->txn->status / 100;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5029 if (n < 1 || n > 5)
5030 n = 0;
5031
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5032 if (fe->mode == PR_MODE_HTTP) {
5033 fe->fe_counters.p.http.rsp[n]++;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5034 if (s->comp_algo && (s->flags & SF_COMP_READY))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5035 fe->fe_counters.p.http.comp_rsp++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5036 }
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5037 if ((s->flags & SF_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5038 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5039 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5040 s->be->be_counters.p.http.cum_req++;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5041 if (s->comp_algo && (s->flags & SF_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]5042 s->be->be_counters.p.http.comp_rsp++;
5043 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5044 }
5045
5046 /* don't count other requests' data */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5047 s->logs.bytes_in -= s->req.buf->i;
5048 s->logs.bytes_out -= s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5049
5050 /* let's do a final log if we need it */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5051 if (!LIST_ISEMPTY(&fe->logformat) && s->logs.logwait &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5052 !(s->flags & SF_MONITOR) &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5053 (!(fe->options & PR_O_NULLNOLOG) || s->req.total)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5054 s->do_log(s);
5055 }
5056
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]5057 /* stop tracking content-based counters */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5058 stream_stop_content_counters(s);
5059 stream_update_time_stats(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]5060
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5061 s->logs.accept_date = date; /* user-visible date for logging */
5062 s->logs.tv_accept = now; /* corrected date for internal use */
5063 tv_zero(&s->logs.tv_request);
5064 s->logs.t_queue = -1;
5065 s->logs.t_connect = -1;
5066 s->logs.t_data = -1;
5067 s->logs.t_close = 0;
5068 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
5069 s->logs.srv_queue_size = 0; /* we will get this number soon */
5070
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5071 s->logs.bytes_in = s->req.total = s->req.buf->i;
5072 s->logs.bytes_out = s->res.total = s->res.buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5073
5074 if (s->pend_pos)
5075 pendconn_free(s->pend_pos);
5076
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5077 if (objt_server(s->target)) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5078 if (s->flags & SF_CURR_SESS) {
5079 s->flags &= ~SF_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5080 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5081 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5082 if (may_dequeue_tasks(objt_server(s->target), s->be))
5083 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5084 }
5085
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5086 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5087
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5088 /* only release our endpoint if we don't intend to reuse the
5089 * connection.
5090 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5091 if (((s->txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5092 !si_conn_ready(&s->si[1])) {
5093 si_release_endpoint(&s->si[1]);
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5094 }
5095
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5096 s->si[1].state = s->si[1].prev_state = SI_ST_INI;
5097 s->si[1].err_type = SI_ET_NONE;
5098 s->si[1].conn_retries = 0; /* used for logging too */
5099 s->si[1].exp = TICK_ETERNITY;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5100 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]5101 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);
5102 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]5103 s->flags &= ~(SF_DIRECT|SF_ASSIGNED|SF_ADDR_SET|SF_BE_ASSIGNED|SF_FORCE_PRST|SF_IGNORE_PRST);
5104 s->flags &= ~(SF_CURR_SESS|SF_REDIRECTABLE|SF_SRV_REUSED);
5105 s->flags &= ~(SF_ERR_MASK|SF_FINST_MASK|SF_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]5106
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5107 s->txn->meth = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5108 http_reset_txn(s);
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5109 s->txn->flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5110
5111 if (prev_status == 401 || prev_status == 407) {
5112 /* In HTTP keep-alive mode, if we receive a 401, we still have
5113 * a chance of being able to send the visitor again to the same
5114 * server over the same connection. This is required by some
5115 * broken protocols such as NTLM, and anyway whenever there is
5116 * an opportunity for sending the challenge to the proper place,
5117 * it's better to do it (at least it helps with debugging).
5118 */
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5119 s->txn->flags |= TX_PREFER_LAST;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]5120 }
5121
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5122 if (fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5123 s->si[1].flags |= SI_FL_INDEP_STR;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5124
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5125 if (fe->options2 & PR_O2_NODELAY) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5126 s->req.flags |= CF_NEVER_WAIT;
5127 s->res.flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]5128 }
5129
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5130 /* if the request buffer is not empty, it means we're
5131 * about to process another request, so send pending
5132 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5133 * Just don't do this if the buffer is close to be full,
5134 * because the request will wait for it to flush a little
5135 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5136 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5137 if (s->req.buf->i) {
5138 if (s->res.buf->o &&
5139 !buffer_full(s->res.buf, global.tune.maxrewrite) &&
5140 bi_end(s->res.buf) <= s->res.buf->data + s->res.buf->size - global.tune.maxrewrite)
5141 s->res.flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]5142 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5143
5144 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5145 channel_auto_read(&s->req);
5146 channel_auto_close(&s->req);
5147 channel_auto_read(&s->res);
5148 channel_auto_close(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5149
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5150 /* we're in keep-alive with an idle connection, monitor it */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5151 si_idle_conn(&s->si[1]);
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]5152
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]5153 s->req.analysers = strm_li(s)->analysers;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5154 s->res.analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5155}
5156
5157
5158/* This function updates the request state machine according to the response
5159 * state machine and buffer flags. It returns 1 if it changes anything (flag
5160 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5161 * it is only used to find when a request/response couple is complete. Both
5162 * this function and its equivalent should loop until both return zero. It
5163 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5164 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5165int http_sync_req_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5166{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5167 struct channel *chn = &s->req;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5168 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5169 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5170 unsigned int old_state = txn->req.msg_state;
5171
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5172 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5173 return 0;
5174
5175 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5176 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5177 * We can shut the read side unless we want to abort_on_close,
5178 * or we have a POST request. The issue with POST requests is
5179 * that some browsers still send a CRLF after the request, and
5180 * this CRLF must be read so that it does not remain in the kernel
5181 * buffers, otherwise a close could cause an RST on some systems
5182 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5183 * Note that if we're using keep-alive on the client side, we'd
5184 * rather poll now and keep the polling enabled for the whole
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5185 * stream's life than enabling/disabling it between each
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5186 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5187 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5188 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5189 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5190 !(s->be->options & PR_O_ABRT_CLOSE) &&
5191 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5192 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5193
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5194 /* if the server closes the connection, we want to immediately react
5195 * and close the socket to save packets and syscalls.
5196 */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5197 s->si[1].flags |= SI_FL_NOHALF;
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5198
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5199 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5200 goto wait_other_side;
5201
5202 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5203 /* The server has not finished to respond, so we
5204 * don't want to move in order not to upset it.
5205 */
5206 goto wait_other_side;
5207 }
5208
5209 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5210 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5211 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5212 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5213 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5214 goto wait_other_side;
5215 }
5216
5217 /* When we get here, it means that both the request and the
5218 * response have finished receiving. Depending on the connection
5219 * mode, we'll have to wait for the last bytes to leave in either
5220 * direction, and sometimes for a close to be effective.
5221 */
5222
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5223 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5224 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5225 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5226 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5227 }
5228 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5229 /* Option forceclose is set, or either side wants to close,
5230 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5231 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5232 * once both states are CLOSED.
5233 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5234 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5235 channel_shutr_now(chn);
5236 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5237 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5238 }
5239 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5240 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5241 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5242 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5243 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5244 channel_auto_read(chn);
5245 txn->req.msg_state = HTTP_MSG_TUNNEL;
5246 chn->flags |= CF_NEVER_WAIT;
5247 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5248 }
5249
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5250 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5251 /* if we've just closed an output, let's switch */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5252 s->si[1].flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5253
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5254 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5255 txn->req.msg_state = HTTP_MSG_CLOSING;
5256 goto http_msg_closing;
5257 }
5258 else {
5259 txn->req.msg_state = HTTP_MSG_CLOSED;
5260 goto http_msg_closed;
5261 }
5262 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5263 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5264 }
5265
5266 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5267 http_msg_closing:
5268 /* nothing else to forward, just waiting for the output buffer
5269 * to be empty and for the shutw_now to take effect.
5270 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5271 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5272 txn->req.msg_state = HTTP_MSG_CLOSED;
5273 goto http_msg_closed;
5274 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5275 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5276 txn->req.msg_state = HTTP_MSG_ERROR;
5277 goto wait_other_side;
5278 }
5279 }
5280
5281 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5282 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5283 /* see above in MSG_DONE why we only do this in these states */
5284 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5285 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5286 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5287 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5288 goto wait_other_side;
5289 }
5290
5291 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5292 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5293}
5294
5295
5296/* This function updates the response state machine according to the request
5297 * state machine and buffer flags. It returns 1 if it changes anything (flag
5298 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5299 * it is only used to find when a request/response couple is complete. Both
5300 * this function and its equivalent should loop until both return zero. It
5301 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5302 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5303int http_sync_res_state(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5304{
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5305 struct channel *chn = &s->res;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5306 struct http_txn *txn = s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5307 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5308 unsigned int old_state = txn->rsp.msg_state;
5309
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5310 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5311 return 0;
5312
5313 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5314 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5315 * still monitor the server connection for a possible close
5316 * while the request is being uploaded, so we don't disable
5317 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5318 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5319 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5320
5321 if (txn->req.msg_state == HTTP_MSG_ERROR)
5322 goto wait_other_side;
5323
5324 if (txn->req.msg_state < HTTP_MSG_DONE) {
5325 /* The client seems to still be sending data, probably
5326 * because we got an error response during an upload.
5327 * We have the choice of either breaking the connection
5328 * or letting it pass through. Let's do the later.
5329 */
5330 goto wait_other_side;
5331 }
5332
5333 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5334 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5335 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5336 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5337 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5338 goto wait_other_side;
5339 }
5340
5341 /* When we get here, it means that both the request and the
5342 * response have finished receiving. Depending on the connection
5343 * mode, we'll have to wait for the last bytes to leave in either
5344 * direction, and sometimes for a close to be effective.
5345 */
5346
5347 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5348 /* Server-close mode : shut read and wait for the request
5349 * side to close its output buffer. The caller will detect
5350 * when we're in DONE and the other is in CLOSED and will
5351 * catch that for the final cleanup.
5352 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5353 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5354 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5355 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5356 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5357 /* Option forceclose is set, or either side wants to close,
5358 * let's enforce it now that we're not expecting any new
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5359 * data to come. The caller knows the stream is complete
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5360 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5361 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5362 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5363 channel_shutr_now(chn);
5364 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5365 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5366 }
5367 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5368 /* The last possible modes are keep-alive and tunnel. Tunnel will
5369 * need to forward remaining data. Keep-alive will need to monitor
5370 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5371 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5372 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5373 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5374 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5375 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5376 }
5377
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5378 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5379 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5380 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5381 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5382 goto http_msg_closing;
5383 }
5384 else {
5385 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5386 goto http_msg_closed;
5387 }
5388 }
5389 goto wait_other_side;
5390 }
5391
5392 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5393 http_msg_closing:
5394 /* nothing else to forward, just waiting for the output buffer
5395 * to be empty and for the shutw_now to take effect.
5396 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5397 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5398 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5399 goto http_msg_closed;
5400 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5401 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5402 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5403 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5404 if (objt_server(s->target))
5405 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5406 goto wait_other_side;
5407 }
5408 }
5409
5410 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5411 http_msg_closed:
5412 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5413 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5414 channel_auto_close(chn);
5415 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5416 goto wait_other_side;
5417 }
5418
5419 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5420 /* We force the response to leave immediately if we're waiting for the
5421 * other side, since there is no pending shutdown to push it out.
5422 */
5423 if (!channel_is_empty(chn))
5424 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5425 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5426}
5427
5428
5429/* Resync the request and response state machines. Return 1 if either state
5430 * changes.
5431 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5432int http_resync_states(struct stream *s)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5433{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5434 struct http_txn *txn = s->txn;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5435 int old_req_state = txn->req.msg_state;
5436 int old_res_state = txn->rsp.msg_state;
5437
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5438 http_sync_req_state(s);
5439 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5440 if (!http_sync_res_state(s))
5441 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5442 if (!http_sync_req_state(s))
5443 break;
5444 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5445
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5446 /* OK, both state machines agree on a compatible state.
5447 * There are a few cases we're interested in :
5448 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5449 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5450 * directions, so let's simply disable both analysers.
5451 * - HTTP_MSG_CLOSED on the response only means we must abort the
5452 * request.
5453 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5454 * with server-close mode means we've completed one request and we
5455 * must re-initialize the server connection.
5456 */
5457
5458 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5459 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5460 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5461 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5462 s->req.analysers = 0;
5463 channel_auto_close(&s->req);
5464 channel_auto_read(&s->req);
5465 s->res.analysers = 0;
5466 channel_auto_close(&s->res);
5467 channel_auto_read(&s->res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5468 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5469 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5470 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->res.flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5471 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5472 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5473 s->res.analysers = 0;
5474 channel_auto_close(&s->res);
5475 channel_auto_read(&s->res);
5476 s->req.analysers = 0;
5477 channel_abort(&s->req);
5478 channel_auto_close(&s->req);
5479 channel_auto_read(&s->req);
5480 channel_truncate(&s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5481 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5482 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5483 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5484 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5485 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5486 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5487 /* server-close/keep-alive: terminate this transaction,
5488 * possibly killing the server connection and reinitialize
5489 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5490 */
5491 http_end_txn_clean_session(s);
5492 }
5493
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5494 return txn->req.msg_state != old_req_state ||
5495 txn->rsp.msg_state != old_res_state;
5496}
5497
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5498/* This function is an analyser which forwards request body (including chunk
5499 * sizes if any). It is called as soon as we must forward, even if we forward
5500 * zero byte. The only situation where it must not be called is when we're in
5501 * tunnel mode and we want to forward till the close. It's used both to forward
5502 * remaining data and to resync after end of body. It expects the msg_state to
5503 * 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]5504 * 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]5505 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5506 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5507 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5508int http_request_forward_body(struct stream *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5509{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5510 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5511 struct http_txn *txn = s->txn;
5512 struct http_msg *msg = &s->txn->req;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5513
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5514 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5515 return 0;
5516
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5517 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]5518 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5519 /* Output closed while we were sending data. We must abort and
5520 * wake the other side up.
5521 */
5522 msg->msg_state = HTTP_MSG_ERROR;
5523 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5524 return 1;
5525 }
5526
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5527 /* Note that we don't have to send 100-continue back because we don't
5528 * need the data to complete our job, and it's up to the server to
5529 * decide whether to return 100, 417 or anything else in return of
5530 * an "Expect: 100-continue" header.
5531 */
5532
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5533 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5534 /* we have msg->sov which points to the first byte of message
5535 * body, and req->buf.p still points to the beginning of the
5536 * message. We forward the headers now, as we don't need them
5537 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5538 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5539 b_adv(req->buf, msg->sov);
5540 msg->next -= msg->sov;
5541 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5542
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5543 /* The previous analysers guarantee that the state is somewhere
5544 * between MSG_BODY and the first MSG_DATA. So msg->sol and
5545 * msg->next are always correct.
5546 */
5547 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
5548 if (msg->flags & HTTP_MSGF_TE_CHNK)
5549 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5550 else
5551 msg->msg_state = HTTP_MSG_DATA;
5552 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5553 }
5554
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5555 /* Some post-connect processing might want us to refrain from starting to
5556 * forward data. Currently, the only reason for this is "balance url_param"
5557 * whichs need to parse/process the request after we've enabled forwarding.
5558 */
5559 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5560 if (!(s->res.flags & CF_READ_ATTACHED)) {
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5561 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5562 req->flags |= CF_WAKE_CONNECT;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5563 goto missing_data;
5564 }
5565 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5566 }
5567
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5568 /* in most states, we should abort in case of early close */
5569 channel_auto_close(req);
5570
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5571 if (req->to_forward) {
5572 /* We can't process the buffer's contents yet */
5573 req->flags |= CF_WAKE_WRITE;
5574 goto missing_data;
5575 }
5576
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5577 while (1) {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5578 if (msg->msg_state == HTTP_MSG_DATA) {
5579 /* must still forward */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5580 /* we may have some pending data starting at req->buf->p */
5581 if (msg->chunk_len > req->buf->i - msg->next) {
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5582 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5583 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5584 }
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5585 msg->next += msg->chunk_len;
5586 msg->chunk_len = 0;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5587
5588 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5589 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5590 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5591 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5592 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5593 }
5594 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5595 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5596 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5597 * TRAILERS state.
5598 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5599 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5600
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5601 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5602 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5603 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5604 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5605 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5606 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]5607 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5608 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5609 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5610 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5611 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5612 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5613 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5614
5615 if (ret == 0)
5616 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5617 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5618 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5619 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5620 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]5621 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5622 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5623 /* we're in MSG_CHUNK_SIZE now */
5624 }
5625 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5626 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5627
5628 if (ret == 0)
5629 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5630 else if (ret < 0) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5631 stream_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5632 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5633 http_capture_bad_message(&sess->fe->invalid_req, s, msg, HTTP_MSG_TRAILERS, s->be);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5634 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5635 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5636 /* we're in HTTP_MSG_DONE now */
5637 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5638 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5639 int old_state = msg->msg_state;
5640
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5641 /* other states, DONE...TUNNEL */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5642
5643 /* we may have some pending data starting at req->buf->p
5644 * such as last chunk of data or trailers.
5645 */
5646 b_adv(req->buf, msg->next);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5647 if (unlikely(!(s->req.flags & CF_WROTE_DATA)))
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5648 msg->sov -= msg->next;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5649 msg->next = 0;
5650
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5651 /* we don't want to forward closes on DONE except in
5652 * tunnel mode.
5653 */
5654 if ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5655 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5656 if (http_resync_states(s)) {
5657 /* some state changes occurred, maybe the analyser
5658 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5659 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5660 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5661 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5662 /* request errors are most likely due to
5663 * the server aborting the transfer.
5664 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5665 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5666 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5667 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5668 http_capture_bad_message(&sess->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5669 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5670 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5671 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5672 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5673
5674 /* If "option abortonclose" is set on the backend, we
5675 * want to monitor the client's connection and forward
5676 * any shutdown notification to the server, which will
5677 * decide whether to close or to go on processing the
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5678 * request. We only do that in tunnel mode, and not in
5679 * other modes since it can be abused to exhaust source
5680 * ports.
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5681 */
5682 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5683 channel_auto_read(req);
Willy Tarreaubbfb6c42015-05-11 18:30:33 +0200[diff] [blame]5684 if ((req->flags & (CF_SHUTR|CF_READ_NULL)) &&
5685 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN))
5686 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5687 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5688 }
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5689 else if (s->txn->meth == HTTP_METH_POST) {
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5690 /* POST requests may require to read extra CRLF
5691 * sent by broken browsers and which could cause
5692 * an RST to be sent upon close on some systems
5693 * (eg: Linux).
5694 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5695 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5696 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5697
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5698 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5699 }
5700 }
5701
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5702 missing_data:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5703 /* we may have some pending data starting at req->buf->p */
5704 b_adv(req->buf, msg->next);
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5705 if (unlikely(!(s->req.flags & CF_WROTE_DATA)))
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5706 msg->sov -= msg->next + MIN(msg->chunk_len, req->buf->i);
5707
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5708 msg->next = 0;
5709 msg->chunk_len -= channel_forward(req, msg->chunk_len);
5710
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5711 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5712 if (req->flags & CF_SHUTR) {
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5713 if (!(s->flags & SF_ERR_MASK))
5714 s->flags |= SF_ERR_CLICL;
5715 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5716 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5717 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5718 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5719 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5720 }
5721
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5722 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5723 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5724 if (objt_server(s->target))
5725 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5726
5727 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5728 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5729
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5730 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5731 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5732 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5733
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5734 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5735 * 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]5736 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5737 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5738 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5739
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5740 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5741 * 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]5742 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5743 * modes are already handled by the stream sock layer. We must not do
5744 * this in content-length mode because it could present the MSG_MORE
5745 * flag with the last block of forwarded data, which would cause an
5746 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5747 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5748 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5749 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5750
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5751 return 0;
5752
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5753 return_bad_req: /* let's centralize all bad requests */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5754 sess->fe->fe_counters.failed_req++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]5755 if (sess->listener->counters)
5756 sess->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5757
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5758 return_bad_req_stats_ok:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5759 /* we may have some pending data starting at req->buf->p */
5760 b_adv(req->buf, msg->next);
5761 msg->next = 0;
5762
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5763 txn->req.msg_state = HTTP_MSG_ERROR;
5764 if (txn->status) {
5765 /* Note: we don't send any error if some data were already sent */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5766 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5767 } else {
5768 txn->status = 400;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5769 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5770 }
5771 req->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5772 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]5773
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5774 if (!(s->flags & SF_ERR_MASK))
5775 s->flags |= SF_ERR_PRXCOND;
5776 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5777 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5778 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5779 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5780 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5781 }
5782 return 0;
5783
5784 aborted_xfer:
5785 txn->req.msg_state = HTTP_MSG_ERROR;
5786 if (txn->status) {
5787 /* Note: we don't send any error if some data were already sent */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5788 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5789 } else {
5790 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5791 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5792 }
5793 req->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5794 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]5795
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5796 sess->fe->fe_counters.srv_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5797 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5798 if (objt_server(s->target))
5799 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5800
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5801 if (!(s->flags & SF_ERR_MASK))
5802 s->flags |= SF_ERR_SRVCL;
5803 if (!(s->flags & SF_FINST_MASK)) {
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5804 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5805 s->flags |= SF_FINST_H;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5806 else
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5807 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5808 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5809 return 0;
5810}
5811
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5812/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5813 * processing can continue on next analysers, or zero if it either needs more
5814 * data or wants to immediately abort the response (eg: timeout, error, ...). It
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]5815 * 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]5816 * when it has nothing left to do, and may remove any analyser when it wants to
5817 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5818 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5819int http_wait_for_response(struct stream *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5820{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5821 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]5822 struct http_txn *txn = s->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5823 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5824 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5825 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5826 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5827 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5828
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]5829 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]5830 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5831 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5832 rep,
5833 rep->rex, rep->wex,
5834 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5835 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5836 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5837
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5838 /*
5839 * Now parse the partial (or complete) lines.
5840 * We will check the response syntax, and also join multi-line
5841 * headers. An index of all the lines will be elaborated while
5842 * parsing.
5843 *
5844 * For the parsing, we use a 28 states FSM.
5845 *
5846 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5847 * rep->buf->p = beginning of response
5848 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5849 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5850 * msg->eol = end of current header or line (LF or CRLF)
5851 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5852 */
5853
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5854 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5855 /* There's a protected area at the end of the buffer for rewriting
5856 * purposes. We don't want to start to parse the request if the
5857 * protected area is affected, because we may have to move processed
5858 * data later, which is much more complicated.
5859 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5860 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5861 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5862 /* some data has still not left the buffer, wake us once that's done */
5863 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5864 goto abort_response;
5865 channel_dont_close(rep);
5866 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5867 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5868 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5869 }
5870
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5871 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5872 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5873 buffer_slow_realign(rep->buf);
5874
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5875 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5876 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5877 }
5878
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5879 /* 1: we might have to print this header in debug mode */
5880 if (unlikely((global.mode & MODE_DEBUG) &&
5881 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5882 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5883 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5884
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5885 sol = rep->buf->p;
5886 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5887 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5888
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5889 sol += hdr_idx_first_pos(&txn->hdr_idx);
5890 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5891
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5892 while (cur_idx) {
5893 eol = sol + txn->hdr_idx.v[cur_idx].len;
5894 debug_hdr("srvhdr", s, sol, eol);
5895 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5896 cur_idx = txn->hdr_idx.v[cur_idx].next;
5897 }
5898 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5899
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5900 /*
5901 * Now we quickly check if we have found a full valid response.
5902 * If not so, we check the FD and buffer states before leaving.
5903 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5904 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5905 * responses are checked first.
5906 *
5907 * Depending on whether the client is still there or not, we
5908 * may send an error response back or not. Note that normally
5909 * we should only check for HTTP status there, and check I/O
5910 * errors somewhere else.
5911 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5912
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5913 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5914 /* Invalid response */
5915 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5916 /* we detected a parsing error. We want to archive this response
5917 * in the dedicated proxy area for later troubleshooting.
5918 */
5919 hdr_response_bad:
5920 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5921 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]5922
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5923 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5924 if (objt_server(s->target)) {
5925 objt_server(s->target)->counters.failed_resp++;
5926 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5927 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5928 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5929 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5930 rep->analysers = 0;
5931 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5932 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5933 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5934 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5935
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5936 if (!(s->flags & SF_ERR_MASK))
5937 s->flags |= SF_ERR_PRXCOND;
5938 if (!(s->flags & SF_FINST_MASK))
5939 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5940
5941 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5942 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5943
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5944 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5945 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5946 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5947 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5948 goto hdr_response_bad;
5949 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5950
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5951 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5952 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5953 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5954 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]5955 else if (txn->flags & TX_NOT_FIRST)
5956 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5957
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5958 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5959 if (objt_server(s->target)) {
5960 objt_server(s->target)->counters.failed_resp++;
5961 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5962 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5963
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5964 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5965 rep->analysers = 0;
5966 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5967 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5968 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5969 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5970
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5971 if (!(s->flags & SF_ERR_MASK))
5972 s->flags |= SF_ERR_SRVCL;
5973 if (!(s->flags & SF_FINST_MASK))
5974 s->flags |= SF_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5975 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5976 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5977
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]5978 /* read timeout : return a 504 to the client. */
5979 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5980 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]5981 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]5982 else if (txn->flags & TX_NOT_FIRST)
5983 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5984
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5985 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5986 if (objt_server(s->target)) {
5987 objt_server(s->target)->counters.failed_resp++;
5988 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5989 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5990
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5991 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5992 rep->analysers = 0;
5993 txn->status = 504;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5994 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5995 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]5996 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5997
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]5998 if (!(s->flags & SF_ERR_MASK))
5999 s->flags |= SF_ERR_SRVTO;
6000 if (!(s->flags & SF_FINST_MASK))
6001 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6002 return 0;
6003 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]6004
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6005 /* client abort with an abortonclose */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6006 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]6007 sess->fe->fe_counters.cli_aborts++;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6008 s->be->be_counters.cli_aborts++;
6009 if (objt_server(s->target))
6010 objt_server(s->target)->counters.cli_aborts++;
6011
6012 rep->analysers = 0;
6013 channel_auto_close(rep);
6014
6015 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6016 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6017 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_400));
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6018
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6019 if (!(s->flags & SF_ERR_MASK))
6020 s->flags |= SF_ERR_CLICL;
6021 if (!(s->flags & SF_FINST_MASK))
6022 s->flags |= SF_FINST_H;
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6023
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6024 /* process_stream() will take care of the error */
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6025 return 0;
6026 }
6027
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6028 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6029 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]6030 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6031 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]6032 else if (txn->flags & TX_NOT_FIRST)
6033 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6034
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6035 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6036 if (objt_server(s->target)) {
6037 objt_server(s->target)->counters.failed_resp++;
6038 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6039 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6040
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6041 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6042 rep->analysers = 0;
6043 txn->status = 502;
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6044 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6045 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6046 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6047
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6048 if (!(s->flags & SF_ERR_MASK))
6049 s->flags |= SF_ERR_SRVCL;
6050 if (!(s->flags & SF_FINST_MASK))
6051 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6052 return 0;
6053 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6054
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6055 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6056 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6057 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6058 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]6059 else if (txn->flags & TX_NOT_FIRST)
6060 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]6061
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6062 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6063 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6064 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6065
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6066 if (!(s->flags & SF_ERR_MASK))
6067 s->flags |= SF_ERR_CLICL;
6068 if (!(s->flags & SF_FINST_MASK))
6069 s->flags |= SF_FINST_H;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6070
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6071 /* process_stream() will take care of the error */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6072 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6073 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6074
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6075 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]6076 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6077 return 0;
6078 }
6079
6080 /* More interesting part now : we know that we have a complete
6081 * response which at least looks like HTTP. We have an indicator
6082 * of each header's length, so we can parse them quickly.
6083 */
6084
6085 if (unlikely(msg->err_pos >= 0))
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6086 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]6087
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6088 /*
6089 * 1: get the status code
6090 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6091 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6092 if (n < 1 || n > 5)
6093 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6094 /* when the client triggers a 4xx from the server, it's most often due
6095 * to a missing object or permission. These events should be tracked
6096 * because if they happen often, it may indicate a brute force or a
6097 * vulnerability scan.
6098 */
6099 if (n == 4)
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6100 stream_inc_http_err_ctr(s);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]6101
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6102 if (objt_server(s->target))
6103 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6104
Willy Tarreau91852eb2015-05-01 13:26:00 +0200[diff] [blame]6105 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
6106 * exactly one digit "." one digit. This check may be disabled using
6107 * option accept-invalid-http-response.
6108 */
6109 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
6110 if (msg->sl.st.v_l != 8) {
6111 msg->err_pos = 0;
6112 goto hdr_response_bad;
6113 }
6114
6115 if (rep->buf->p[4] != '/' ||
6116 !isdigit((unsigned char)rep->buf->p[5]) ||
6117 rep->buf->p[6] != '.' ||
6118 !isdigit((unsigned char)rep->buf->p[7])) {
6119 msg->err_pos = 4;
6120 goto hdr_response_bad;
6121 }
6122 }
6123
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6124 /* check if the response is HTTP/1.1 or above */
6125 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6126 ((rep->buf->p[5] > '1') ||
6127 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6128 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6129
6130 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6131 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]6132
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6133 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6134 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6135
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6136 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]6137
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]6138 /* Adjust server's health based on status code. Note: status codes 501
6139 * and 505 are triggered on demand by client request, so we must not
6140 * count them as server failures.
6141 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6142 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6143 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6144 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6145 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6146 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]6147 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]6148
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6149 /*
6150 * 2: check for cacheability.
6151 */
6152
6153 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]6154 case 100:
6155 /*
6156 * We may be facing a 100-continue response, in which case this
6157 * is not the right response, and we're waiting for the next one.
6158 * Let's allow this response to go to the client and wait for the
6159 * next one.
6160 */
6161 hdr_idx_init(&txn->hdr_idx);
6162 msg->next -= channel_forward(rep, msg->next);
6163 msg->msg_state = HTTP_MSG_RPBEFORE;
6164 txn->status = 0;
6165 s->logs.t_data = -1; /* was not a response yet */
6166 goto next_one;
6167
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6168 case 200:
6169 case 203:
6170 case 206:
6171 case 300:
6172 case 301:
6173 case 410:
6174 /* RFC2616 @13.4:
6175 * "A response received with a status code of
6176 * 200, 203, 206, 300, 301 or 410 MAY be stored
6177 * by a cache (...) unless a cache-control
6178 * directive prohibits caching."
6179 *
6180 * RFC2616 @9.5: POST method :
6181 * "Responses to this method are not cacheable,
6182 * unless the response includes appropriate
6183 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6184 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6185 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6186 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6187 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6188 break;
6189 default:
6190 break;
6191 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6192
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6193 /*
6194 * 3: we may need to capture headers
6195 */
6196 s->logs.logwait &= ~LW_RESP;
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6197 if (unlikely((s->logs.logwait & LW_RSPHDR) && s->res_cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6198 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]6199 s->res_cap, sess->fe->rsp_cap);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6200
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6201 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
6202 * by RFC7230#3.3.3 :
6203 *
6204 * The length of a message body is determined by one of the following
6205 * (in order of precedence):
6206 *
6207 * 1. Any response to a HEAD request and any response with a 1xx
6208 * (Informational), 204 (No Content), or 304 (Not Modified) status
6209 * code is always terminated by the first empty line after the
6210 * header fields, regardless of the header fields present in the
6211 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6212 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6213 * 2. Any 2xx (Successful) response to a CONNECT request implies that
6214 * the connection will become a tunnel immediately after the empty
6215 * line that concludes the header fields. A client MUST ignore any
6216 * Content-Length or Transfer-Encoding header fields received in
6217 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6218 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6219 * 3. If a Transfer-Encoding header field is present and the chunked
6220 * transfer coding (Section 4.1) is the final encoding, the message
6221 * body length is determined by reading and decoding the chunked
6222 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6223 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6224 * If a Transfer-Encoding header field is present in a response and
6225 * the chunked transfer coding is not the final encoding, the
6226 * message body length is determined by reading the connection until
6227 * it is closed by the server. If a Transfer-Encoding header field
6228 * is present in a request and the chunked transfer coding is not
6229 * the final encoding, the message body length cannot be determined
6230 * reliably; the server MUST respond with the 400 (Bad Request)
6231 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6232 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6233 * If a message is received with both a Transfer-Encoding and a
6234 * Content-Length header field, the Transfer-Encoding overrides the
6235 * Content-Length. Such a message might indicate an attempt to
6236 * perform request smuggling (Section 9.5) or response splitting
6237 * (Section 9.4) and ought to be handled as an error. A sender MUST
6238 * remove the received Content-Length field prior to forwarding such
6239 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6240 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6241 * 4. If a message is received without Transfer-Encoding and with
6242 * either multiple Content-Length header fields having differing
6243 * field-values or a single Content-Length header field having an
6244 * invalid value, then the message framing is invalid and the
6245 * recipient MUST treat it as an unrecoverable error. If this is a
6246 * request message, the server MUST respond with a 400 (Bad Request)
6247 * status code and then close the connection. If this is a response
6248 * message received by a proxy, the proxy MUST close the connection
6249 * to the server, discard the received response, and send a 502 (Bad
6250 * Gateway) response to the client. If this is a response message
6251 * received by a user agent, the user agent MUST close the
6252 * connection to the server and discard the received response.
6253 *
6254 * 5. If a valid Content-Length header field is present without
6255 * Transfer-Encoding, its decimal value defines the expected message
6256 * body length in octets. If the sender closes the connection or
6257 * the recipient times out before the indicated number of octets are
6258 * received, the recipient MUST consider the message to be
6259 * incomplete and close the connection.
6260 *
6261 * 6. If this is a request message and none of the above are true, then
6262 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6263 *
Willy Tarreau557f1992015-05-01 10:05:17 +0200[diff] [blame]6264 * 7. Otherwise, this is a response message without a declared message
6265 * body length, so the message body length is determined by the
6266 * number of octets received prior to the server closing the
6267 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6268 */
6269
6270 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6271 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6272 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6273 * FIXME: should we parse anyway and return an error on chunked encoding ?
6274 */
6275 if (txn->meth == HTTP_METH_HEAD ||
6276 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6277 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6278 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]6279 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6280 goto skip_content_length;
6281 }
6282
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6283 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6284 ctx.idx = 0;
Willy Tarreau4979d5c2015-05-01 10:06:30 +0200[diff] [blame]6285 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6286 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6287 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6288 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6289 /* bad transfer-encoding (chunked followed by something else) */
6290 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6291 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6292 break;
6293 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6294 }
6295
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6296 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6297 ctx.idx = 0;
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6298 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreau1c913912015-04-30 10:57:51 +0200[diff] [blame]6299 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6300 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6301 }
Willy Tarreaub4d0c032015-05-01 10:25:45 +0200[diff] [blame]6302 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]6303 signed long long cl;
6304
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6305 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6306 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6307 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6308 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6309
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6310 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6311 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6312 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6313 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6314
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6315 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6316 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6317 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6318 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6319
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6320 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6321 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6322 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6323 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6324
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6325 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6326 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6327 }
6328
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6329 if (sess->fe->comp || s->be->comp)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6330 select_compression_response_header(s, rep->buf);
6331
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6332skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6333 /* Now we have to check if we need to modify the Connection header.
6334 * This is more difficult on the response than it is on the request,
6335 * because we can have two different HTTP versions and we don't know
6336 * how the client will interprete a response. For instance, let's say
6337 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6338 * HTTP/1.1 response without any header. Maybe it will bound itself to
6339 * HTTP/1.0 because it only knows about it, and will consider the lack
6340 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6341 * the lack of header as a keep-alive. Thus we will use two flags
6342 * indicating how a request MAY be understood by the client. In case
6343 * of multiple possibilities, we'll fix the header to be explicit. If
6344 * ambiguous cases such as both close and keepalive are seen, then we
6345 * will fall back to explicit close. Note that we won't take risks with
6346 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6347 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6348 */
6349
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6350 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6351 txn->status == 101)) {
6352 /* Either we've established an explicit tunnel, or we're
6353 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6354 * to understand the next protocols. We have to switch to tunnel
6355 * mode, so that we transfer the request and responses then let
6356 * this protocol pass unmodified. When we later implement specific
6357 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6358 * header which contains information about that protocol for
6359 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6360 */
6361 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6362 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6363 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6364 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6365 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6366 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6367 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6368
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6369 /* this situation happens when combining pretend-keepalive with httpclose. */
6370 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6371 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6372 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6373 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6374
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6375 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6376 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6377 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6378 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6379
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6380 /* now adjust header transformations depending on current state */
6381 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6382 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6383 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6384 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6385 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6386 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6387 else { /* SCL / KAL */
6388 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6389 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6390 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6391 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6392
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6393 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6394 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6395
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6396 /* Some keep-alive responses are converted to Server-close if
6397 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6398 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6399 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6400 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6401 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6402 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6403 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6404 }
6405
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6406 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6407 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6408
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6409 /* end of job, return OK */
6410 rep->analysers &= ~an_bit;
6411 rep->analyse_exp = TICK_ETERNITY;
6412 channel_auto_close(rep);
6413 return 1;
6414
6415 abort_keep_alive:
6416 /* A keep-alive request to the server failed on a network error.
6417 * The client is required to retry. We need to close without returning
6418 * any other information so that the client retries.
6419 */
6420 txn->status = 0;
6421 rep->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6422 s->req.analysers = 0;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6423 channel_auto_close(rep);
6424 s->logs.logwait = 0;
6425 s->logs.level = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6426 s->res.flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6427 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6428 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6429 return 0;
6430}
6431
6432/* This function performs all the processing enabled for the current response.
6433 * It normally returns 1 unless it wants to break. It relies on buffers flags,
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6434 * and updates s->res.analysers. It might make sense to explode it into several
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6435 * other functions. It works like process_request (see indications above).
6436 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6437int 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]6438{
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6439 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6440 struct http_txn *txn = s->txn;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6441 struct http_msg *msg = &txn->rsp;
6442 struct proxy *cur_proxy;
6443 struct cond_wordlist *wl;
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6444 enum rule_result ret = HTTP_RULE_RES_CONT;
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6445
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6446 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]6447 now_ms, __FUNCTION__,
6448 s,
6449 rep,
6450 rep->rex, rep->wex,
6451 rep->flags,
6452 rep->buf->i,
6453 rep->analysers);
6454
6455 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6456 return 0;
6457
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6458 /* The stats applet needs to adjust the Connection header but we don't
6459 * apply any filter there.
6460 */
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6461 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
6462 rep->analysers &= ~an_bit;
6463 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6464 goto skip_filters;
Willy Tarreau612adb82015-03-10 15:25:54 +0100[diff] [blame]6465 }
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6466
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6467 /*
6468 * We will have to evaluate the filters.
6469 * As opposed to version 1.2, now they will be evaluated in the
6470 * filters order and not in the header order. This means that
6471 * each filter has to be validated among all headers.
6472 *
6473 * Filters are tried with ->be first, then with ->fe if it is
6474 * different from ->be.
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6475 *
6476 * Maybe we are in resume condiion. In this case I choose the
6477 * "struct proxy" which contains the rule list matching the resume
6478 * pointer. If none of theses "struct proxy" match, I initialise
6479 * the process with the first one.
6480 *
6481 * In fact, I check only correspondance betwwen the current list
6482 * pointer and the ->fe rule list. If it doesn't match, I initialize
6483 * the loop with the ->be.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6484 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6485 if (s->current_rule_list == &sess->fe->http_res_rules)
6486 cur_proxy = sess->fe;
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6487 else
6488 cur_proxy = s->be;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6489 while (1) {
6490 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6491
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6492 /* evaluate http-response rules */
Thierry FOURNIER9e2ef992015-02-25 13:51:19 +0100[diff] [blame]6493 if (ret == HTTP_RULE_RES_CONT)
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]6494 ret = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6495
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6496 /* we need to be called again. */
6497 if (ret == HTTP_RULE_RES_YIELD) {
6498 channel_dont_close(rep);
6499 return 0;
6500 }
6501
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6502 /* try headers filters */
6503 if (rule_set->rsp_exp != NULL) {
6504 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6505 return_bad_resp:
6506 if (objt_server(s->target)) {
6507 objt_server(s->target)->counters.failed_resp++;
6508 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6509 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6510 s->be->be_counters.failed_resp++;
6511 return_srv_prx_502:
6512 rep->analysers = 0;
6513 txn->status = 502;
6514 s->logs.t_data = -1; /* was not a valid response */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6515 s->si[1].flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6516 channel_truncate(rep);
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]6517 stream_int_retnclose(&s->si[0], http_error_message(s, HTTP_ERR_502));
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6518 if (!(s->flags & SF_ERR_MASK))
6519 s->flags |= SF_ERR_PRXCOND;
6520 if (!(s->flags & SF_FINST_MASK))
6521 s->flags |= SF_FINST_H;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6522 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6523 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6524 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6525
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6526 /* has the response been denied ? */
6527 if (txn->flags & TX_SVDENY) {
6528 if (objt_server(s->target))
6529 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6530
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6531 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6532 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6533 if (sess->listener->counters)
6534 sess->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6535
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6536 goto return_srv_prx_502;
6537 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6538
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6539 /* add response headers from the rule sets in the same order */
6540 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6541 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6542 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6543 if (wl->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]6544 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]6545 ret = acl_pass(ret);
6546 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6547 ret = !ret;
6548 if (!ret)
6549 continue;
6550 }
6551 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6552 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6553 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6554
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6555 /* check whether we're already working on the frontend */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6556 if (cur_proxy == sess->fe)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6557 break;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6558 cur_proxy = sess->fe;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6559 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6560
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]6561 /* After this point, this anayzer can't return yield, so we can
6562 * remove the bit corresponding to this analyzer from the list.
6563 *
6564 * Note that the intermediate returns and goto found previously
6565 * reset the analyzers.
6566 */
6567 rep->analysers &= ~an_bit;
6568 rep->analyse_exp = TICK_ETERNITY;
6569
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6570 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6571 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6572 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6573
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6574 /*
6575 * Now check for a server cookie.
6576 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6577 if (s->be->cookie_name || s->be->appsession_name || sess->fe->capture_name ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6578 (s->be->options & PR_O_CHK_CACHE))
6579 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6580
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6581 /*
6582 * Check for cache-control or pragma headers if required.
6583 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6584 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]6585 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6586
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6587 /*
6588 * Add server cookie in the response if needed
6589 */
6590 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6591 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6592 (!(s->flags & SF_DIRECT) ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6593 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6594 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6595 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6596 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6597 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6598 !(s->flags & SF_IGNORE_PRST)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6599 /* the server is known, it's not the one the client requested, or the
6600 * cookie's last seen date needs to be refreshed. We have to
6601 * insert a set-cookie here, except if we want to insert only on POST
6602 * requests and this one isn't. Note that servers which don't have cookies
6603 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6604 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6605 if (!objt_server(s->target)->cookie) {
6606 chunk_printf(&trash,
6607 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6608 s->be->cookie_name);
6609 }
6610 else {
6611 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]6612
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6613 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6614 /* emit last_date, which is mandatory */
6615 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6616 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6617 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6618
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6619 if (s->be->cookie_maxlife) {
6620 /* emit first_date, which is either the original one or
6621 * the current date.
6622 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6623 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6624 s30tob64(txn->cookie_first_date ?
6625 txn->cookie_first_date >> 2 :
6626 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6627 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6628 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6629 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6630 chunk_appendf(&trash, "; path=/");
6631 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6632
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6633 if (s->be->cookie_domain)
6634 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6635
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6636 if (s->be->ck_opts & PR_CK_HTTPONLY)
6637 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6638
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6639 if (s->be->ck_opts & PR_CK_SECURE)
6640 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6641
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6642 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6643 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6644
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6645 txn->flags &= ~TX_SCK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6646 if (objt_server(s->target)->cookie && (s->flags & SF_DIRECT))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6647 /* the server did not change, only the date was updated */
6648 txn->flags |= TX_SCK_UPDATED;
6649 else
6650 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6651
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6652 /* Here, we will tell an eventual cache on the client side that we don't
6653 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6654 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6655 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6656 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6657 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6658
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6659 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6660
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6661 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6662 "Cache-control: private", 22) < 0))
6663 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6664 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6665 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6666
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6667 /*
6668 * Check if result will be cacheable with a cookie.
6669 * We'll block the response if security checks have caught
6670 * nasty things such as a cacheable cookie.
6671 */
6672 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6673 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6674 (s->be->options & PR_O_CHK_CACHE)) {
6675 /* we're in presence of a cacheable response containing
6676 * a set-cookie header. We'll block it as requested by
6677 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6678 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6679 if (objt_server(s->target))
6680 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6681
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6682 s->be->be_counters.denied_resp++;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6683 sess->fe->fe_counters.denied_resp++;
Willy Tarreaufb0afa72015-04-03 14:46:27 +0200[diff] [blame]6684 if (sess->listener->counters)
6685 sess->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6686
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6687 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6688 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6689 send_log(s->be, LOG_ALERT,
6690 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6691 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6692 goto return_srv_prx_502;
6693 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6694
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6695 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6696 /*
6697 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6698 * If an "Upgrade" token is found, the header is left untouched in order
6699 * 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]6700 * if anything but "Upgrade" is present in the Connection header. We don't
6701 * want to touch any 101 response either since it's switching to another
6702 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6703 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6704 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6705 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6706 ((sess->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6707 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6708 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6709
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6710 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6711 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6712 /* we want a keep-alive response here. Keep-alive header
6713 * required if either side is not 1.1.
6714 */
6715 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6716 want_flags |= TX_CON_KAL_SET;
6717 }
6718 else {
6719 /* we want a close response here. Close header required if
6720 * the server is 1.1, regardless of the client.
6721 */
6722 if (msg->flags & HTTP_MSGF_VER_11)
6723 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6724 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6725
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6726 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6727 http_change_connection_header(txn, msg, want_flags);
6728 }
6729
6730 skip_header_mangling:
6731 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
6732 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
6733 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6734
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6735 /* if the user wants to log as soon as possible, without counting
6736 * bytes from the server, then this is the right moment. We have
6737 * to temporarily assign bytes_out to log what we currently have.
6738 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6739 if (!LIST_ISEMPTY(&sess->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6740 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6741 s->logs.bytes_out = txn->rsp.eoh;
6742 s->do_log(s);
6743 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6744 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6745 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6746}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6747
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6748/* This function is an analyser which forwards response body (including chunk
6749 * sizes if any). It is called as soon as we must forward, even if we forward
6750 * zero byte. The only situation where it must not be called is when we're in
6751 * tunnel mode and we want to forward till the close. It's used both to forward
6752 * remaining data and to resync after end of body. It expects the msg_state to
6753 * 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]6754 * 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]6755 *
6756 * It is capable of compressing response data both in content-length mode and
6757 * in chunked mode. The state machines follows different flows depending on
6758 * whether content-length and chunked modes are used, since there are no
6759 * trailers in content-length :
6760 *
6761 * chk-mode cl-mode
6762 * ,----- BODY -----.
6763 * / \
6764 * V size > 0 V chk-mode
6765 * .--> SIZE -------------> DATA -------------> CRLF
6766 * | | size == 0 | last byte |
6767 * | v final crlf v inspected |
6768 * | TRAILERS -----------> DONE |
6769 * | |
6770 * `----------------------------------------------'
6771 *
6772 * Compression only happens in the DATA state, and must be flushed in final
6773 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6774 * is performed at once on final states for all bytes parsed, or when leaving
6775 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6776 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]6777int http_response_forward_body(struct stream *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6778{
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6779 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]6780 struct http_txn *txn = s->txn;
6781 struct http_msg *msg = &s->txn->rsp;
Willy Tarreauf2f7d6b2014-11-24 11:55:08 +0100[diff] [blame]6782 static struct buffer *tmpbuf = &buf_empty;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6783 int compressing = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6784 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6785
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6786 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6787 return 0;
6788
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6789 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]6790 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6791 !s->req.analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6792 /* Output closed while we were sending data. We must abort and
6793 * wake the other side up.
6794 */
6795 msg->msg_state = HTTP_MSG_ERROR;
6796 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6797 return 1;
6798 }
6799
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6800 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6801 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6802
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]6803 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6804 /* we have msg->sov which points to the first byte of message
6805 * body, and res->buf.p still points to the beginning of the
6806 * message. We forward the headers now, as we don't need them
6807 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6808 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6809 b_adv(res->buf, msg->sov);
6810 msg->next -= msg->sov;
6811 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6812
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6813 /* The previous analysers guarantee that the state is somewhere
6814 * between MSG_BODY and the first MSG_DATA. So msg->sol and
6815 * msg->next are always correct.
6816 */
6817 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
6818 if (msg->flags & HTTP_MSGF_TE_CHNK)
6819 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6820 else
6821 msg->msg_state = HTTP_MSG_DATA;
6822 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6823 }
6824
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6825 if (res->to_forward) {
6826 /* We can't process the buffer's contents yet */
6827 res->flags |= CF_WAKE_WRITE;
6828 goto missing_data;
6829 }
6830
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6831 if (unlikely(s->comp_algo != NULL) && msg->msg_state < HTTP_MSG_TRAILERS) {
6832 /* We need a compression buffer in the DATA state to put the
6833 * output of compressed data, and in CRLF state to let the
6834 * TRAILERS state finish the job of removing the trailing CRLF.
6835 */
Willy Tarreauf2f7d6b2014-11-24 11:55:08 +0100[diff] [blame]6836 if (unlikely(!tmpbuf->size)) {
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6837 /* this is the first time we need the compression buffer */
Willy Tarreaue583ea52014-11-24 11:30:16 +0100[diff] [blame]6838 if (b_alloc(&tmpbuf) == NULL)
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6839 goto aborted_xfer; /* no memory */
6840 }
6841
6842 ret = http_compression_buffer_init(s, res->buf, tmpbuf);
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6843 if (ret < 0) {
6844 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6845 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6846 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6847 compressing = 1;
6848 }
6849
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6850 while (1) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6851 switch (msg->msg_state - HTTP_MSG_DATA) {
6852 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6853 /* we may have some pending data starting at res->buf->p */
6854 if (unlikely(s->comp_algo)) {
Willy Tarreau7f2f8d52014-04-18 00:20:14 +0200[diff] [blame]6855 ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6856 if (ret < 0)
6857 goto aborted_xfer;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6858
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6859 if (msg->chunk_len) {
6860 /* input empty or output full */
6861 if (res->buf->i > msg->next)
6862 res->flags |= CF_WAKE_WRITE;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6863 goto missing_data;
6864 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6865 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6866 else {
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6867 if (msg->chunk_len > res->buf->i - msg->next) {
6868 /* output full */
6869 res->flags |= CF_WAKE_WRITE;
6870 goto missing_data;
6871 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6872 msg->next += msg->chunk_len;
6873 msg->chunk_len = 0;
6874 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6875
6876 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6877 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6878 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6879 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6880 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6881 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6882 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6883 /* fall through for HTTP_MSG_CHUNK_CRLF */
6884
6885 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6886 /* we want the CRLF after the data */
6887
6888 ret = http_skip_chunk_crlf(msg);
6889 if (ret == 0)
6890 goto missing_data;
6891 else if (ret < 0) {
6892 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6893 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]6894 goto return_bad_res;
6895 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6896 /* we're in MSG_CHUNK_SIZE now, fall through */
6897
6898 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6899 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6900 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6901 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6902 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6903
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6904 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6905 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6906 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6907 else if (ret < 0) {
6908 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6909 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]6910 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6911 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6912 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6913 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6914
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6915 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6916 if (unlikely(compressing)) {
6917 /* we need to flush output contents before syncing FSMs */
6918 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6919 compressing = 0;
6920 }
6921
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6922 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6923 if (ret == 0)
6924 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6925 else if (ret < 0) {
6926 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6927 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]6928 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6929 }
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6930 /* we're in HTTP_MSG_DONE now, fall through */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6931
6932 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6933 /* other states, DONE...TUNNEL */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6934 if (unlikely(compressing)) {
6935 /* we need to flush output contents before syncing FSMs */
6936 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6937 compressing = 0;
6938 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6939
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6940 /* we may have some pending data starting at res->buf->p
6941 * such as a last chunk of data or trailers.
6942 */
6943 b_adv(res->buf, msg->next);
6944 msg->next = 0;
6945
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6946 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6947 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6948 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6949 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6950 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6951
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6952 if (http_resync_states(s)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6953 /* some state changes occurred, maybe the analyser
6954 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6955 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6956 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6957 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6958 /* response errors are most likely due to
6959 * the client aborting the transfer.
6960 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6961 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6962 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6963 if (msg->err_pos >= 0)
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]6964 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, sess->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6965 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6966 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6967 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6968 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6969 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6970 }
6971 }
6972
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6973 missing_data:
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6974 /* we may have some pending data starting at res->buf->p */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6975 if (unlikely(compressing)) {
6976 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6977 compressing = 0;
6978 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6979
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6980 if ((s->comp_algo == NULL || msg->msg_state >= HTTP_MSG_TRAILERS)) {
6981 b_adv(res->buf, msg->next);
6982 msg->next = 0;
6983 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6984 }
6985
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6986 if (res->flags & CF_SHUTW)
6987 goto aborted_xfer;
6988
6989 /* stop waiting for data if the input is closed before the end. If the
6990 * client side was already closed, it means that the client has aborted,
6991 * so we don't want to count this as a server abort. Otherwise it's a
6992 * server abort.
6993 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6994 if (res->flags & CF_SHUTR) {
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]6995 if ((s->req.flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6996 goto aborted_xfer;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]6997 if (!(s->flags & SF_ERR_MASK))
6998 s->flags |= SF_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6999 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7000 if (objt_server(s->target))
7001 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7002 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7003 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]7004
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7005 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7006 if (!s->req.analysers)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]7007 goto return_bad_res;
7008
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7009 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7010 * 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]7011 * Similarly, with keep-alive on the client side, we don't want to forward a
7012 * close.
7013 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]7014 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7015 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
7016 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]7017 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]7018
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7019 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7020 * 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]7021 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]7022 * modes are already handled by the stream sock layer. We must not do
7023 * this in content-length mode because it could present the MSG_MORE
7024 * flag with the last block of forwarded data, which would cause an
7025 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7026 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]7027 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]7028 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]7029
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7030 /* the stream handler will take care of timeouts and errors */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7031 return 0;
7032
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]7033 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7034 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7035 if (objt_server(s->target))
7036 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7037
7038 return_bad_res_stats_ok:
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]7039 if (unlikely(compressing)) {
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]7040 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]7041 compressing = 0;
7042 }
7043
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]7044 /* we may have some pending data starting at res->buf->p */
7045 if (s->comp_algo == NULL) {
7046 b_adv(res->buf, msg->next);
7047 msg->next = 0;
7048 }
7049
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7050 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]7051 /* don't send any error message as we're in the body */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]7052 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7053 res->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7054 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]7055 if (objt_server(s->target))
7056 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7057
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7058 if (!(s->flags & SF_ERR_MASK))
7059 s->flags |= SF_ERR_PRXCOND;
7060 if (!(s->flags & SF_FINST_MASK))
7061 s->flags |= SF_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7062 return 0;
7063
7064 aborted_xfer:
Willy Tarreau6fef8ae2014-04-22 21:22:06 +0200[diff] [blame]7065 if (unlikely(compressing)) {
7066 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
7067 compressing = 0;
7068 }
7069
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7070 txn->rsp.msg_state = HTTP_MSG_ERROR;
7071 /* don't send any error message as we're in the body */
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]7072 stream_int_retnclose(&s->si[0], NULL);
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7073 res->analysers = 0;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]7074 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]7075
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7076 sess->fe->fe_counters.cli_aborts++;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]7077 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7078 if (objt_server(s->target))
7079 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]7080
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7081 if (!(s->flags & SF_ERR_MASK))
7082 s->flags |= SF_ERR_CLICL;
7083 if (!(s->flags & SF_FINST_MASK))
7084 s->flags |= SF_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]7085 return 0;
7086}
7087
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7088/* Iterate the same filter through all request headers.
7089 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7090 * Since it can manage the switch to another backend, it updates the per-proxy
7091 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7092 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7093int 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]7094{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7095 char *cur_ptr, *cur_end, *cur_next;
7096 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7097 struct http_txn *txn = s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7098 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7099 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]7100
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7101 last_hdr = 0;
7102
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7103 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7104 old_idx = 0;
7105
7106 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7107 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7108 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7109 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7110 (exp->action == ACT_ALLOW ||
7111 exp->action == ACT_DENY ||
7112 exp->action == ACT_TARPIT))
7113 return 0;
7114
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7115 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7116 if (!cur_idx)
7117 break;
7118
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7119 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7120 cur_ptr = cur_next;
7121 cur_end = cur_ptr + cur_hdr->len;
7122 cur_next = cur_end + cur_hdr->cr + 1;
7123
7124 /* Now we have one header between cur_ptr and cur_end,
7125 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7126 */
7127
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7128 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]7129 switch (exp->action) {
7130 case ACT_SETBE:
7131 /* It is not possible to jump a second time.
7132 * FIXME: should we return an HTTP/500 here so that
7133 * the admin knows there's a problem ?
7134 */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]7135 if (s->be != strm_fe(s))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7136 break;
7137
7138 /* Swithing Proxy */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7139 stream_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7140 last_hdr = 1;
7141 break;
7142
7143 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7144 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7145 last_hdr = 1;
7146 break;
7147
7148 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7149 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7150 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7151 break;
7152
7153 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7154 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7155 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7156 break;
7157
7158 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7159 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7160 if (trash.len < 0)
7161 return -1;
7162
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7163 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7164 /* FIXME: if the user adds a newline in the replacement, the
7165 * index will not be recalculated for now, and the new line
7166 * will not be counted as a new header.
7167 */
7168
7169 cur_end += delta;
7170 cur_next += delta;
7171 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7172 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7173 break;
7174
7175 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7176 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7177 cur_next += delta;
7178
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7179 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7180 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7181 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7182 cur_hdr->len = 0;
7183 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7184 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7185 break;
7186
7187 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7188 }
7189
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7190 /* keep the link from this header to next one in case of later
7191 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7192 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7193 old_idx = cur_idx;
7194 }
7195 return 0;
7196}
7197
7198
7199/* Apply the filter to the request line.
7200 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7201 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7202 * Since it can manage the switch to another backend, it updates the per-proxy
7203 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7204 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7205int 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]7206{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7207 char *cur_ptr, *cur_end;
7208 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7209 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7210 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7211
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7212 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7213 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7214 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7215 (exp->action == ACT_ALLOW ||
7216 exp->action == ACT_DENY ||
7217 exp->action == ACT_TARPIT))
7218 return 0;
7219 else if (exp->action == ACT_REMOVE)
7220 return 0;
7221
7222 done = 0;
7223
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7224 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7225 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7226
7227 /* Now we have the request line between cur_ptr and cur_end */
7228
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7229 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]7230 switch (exp->action) {
7231 case ACT_SETBE:
7232 /* It is not possible to jump a second time.
7233 * FIXME: should we return an HTTP/500 here so that
7234 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7235 */
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]7236 if (s->be != strm_fe(s))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7237 break;
7238
7239 /* Swithing Proxy */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7240 stream_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7241 done = 1;
7242 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7243
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7244 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7245 txn->flags |= TX_CLALLOW;
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_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7250 txn->flags |= TX_CLDENY;
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_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7255 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7256 done = 1;
7257 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7258
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7259 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7260 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7261 if (trash.len < 0)
7262 return -1;
7263
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7264 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7265 /* FIXME: if the user adds a newline in the replacement, the
7266 * index will not be recalculated for now, and the new line
7267 * will not be counted as a new header.
7268 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7269
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7270 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7271 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7272 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7273 HTTP_MSG_RQMETH,
7274 cur_ptr, cur_end + 1,
7275 NULL, NULL);
7276 if (unlikely(!cur_end))
7277 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7278
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7279 /* we have a full request and we know that we have either a CR
7280 * or an LF at <ptr>.
7281 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7282 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7283 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]7284 /* there is no point trying this regex on headers */
7285 return 1;
7286 }
7287 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7288 return done;
7289}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7290
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7291
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7292
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7293/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7294 * 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]7295 * 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]7296 * unparsable request. Since it can manage the switch to another backend, it
7297 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7298 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7299int apply_filters_to_request(struct stream *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7300{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7301 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7302 struct http_txn *txn = s->txn;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7303 struct hdr_exp *exp;
7304
7305 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7306 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7307
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7308 /*
7309 * The interleaving of transformations and verdicts
7310 * makes it difficult to decide to continue or stop
7311 * the evaluation.
7312 */
7313
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7314 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7315 break;
7316
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7317 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7318 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7319 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7320 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7321
7322 /* if this filter had a condition, evaluate it now and skip to
7323 * next filter if the condition does not match.
7324 */
7325 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]7326 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]7327 ret = acl_pass(ret);
7328 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7329 ret = !ret;
7330
7331 if (!ret)
7332 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7333 }
7334
7335 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7336 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7337 if (unlikely(ret < 0))
7338 return -1;
7339
7340 if (likely(ret == 0)) {
7341 /* The filter did not match the request, it can be
7342 * iterated through all headers.
7343 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7344 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7345 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7346 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7347 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7348 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7349}
7350
7351
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7352
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7353/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7354 * Try to retrieve the server associated to the appsession.
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7355 * If the server is found, it's assigned to the stream.
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7356 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7357void manage_client_side_appsession(struct stream *s, const char *buf, int len) {
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7358 struct http_txn *txn = s->txn;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7359 appsess *asession = NULL;
7360 char *sessid_temp = NULL;
7361
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7362 if (len > s->be->appsession_len) {
7363 len = s->be->appsession_len;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7364 }
7365
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7366 if (s->be->options2 & PR_O2_AS_REQL) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7367 /* request-learn option is enabled : store the sessid in the stream for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7368 if (txn->sessid != NULL) {
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7369 /* 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]7370 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7371 }
7372
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7373 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7374 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7375 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]7376 return;
7377 }
7378
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7379 memcpy(txn->sessid, buf, len);
7380 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7381 }
7382
7383 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
7384 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7385 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]7386 return;
7387 }
7388
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7389 memcpy(sessid_temp, buf, len);
7390 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7391
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7392 asession = appsession_hash_lookup(&(s->be->htbl_proxy), sessid_temp);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7393 /* free previously allocated memory */
7394 pool_free2(apools.sessid, sessid_temp);
7395
7396 if (asession != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7397 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
7398 if (!(s->be->options2 & PR_O2_AS_REQL))
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7399 asession->request_count++;
7400
7401 if (asession->serverid != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7402 struct server *srv = s->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7403
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7404 while (srv) {
7405 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7406 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7407 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7408 (s->flags & SF_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7409 /* we found the server and it's usable */
7410 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7411 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7412 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7413 s->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]7414
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7415 break;
7416 } else {
7417 txn->flags &= ~TX_CK_MASK;
7418 txn->flags |= TX_CK_DOWN;
7419 }
7420 }
7421 srv = srv->next;
7422 }
7423 }
7424 }
7425}
7426
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7427/* Find the end of a cookie value contained between <s> and <e>. It works the
7428 * same way as with headers above except that the semi-colon also ends a token.
7429 * See RFC2965 for more information. Note that it requires a valid header to
7430 * return a valid result.
7431 */
7432char *find_cookie_value_end(char *s, const char *e)
7433{
7434 int quoted, qdpair;
7435
7436 quoted = qdpair = 0;
7437 for (; s < e; s++) {
7438 if (qdpair) qdpair = 0;
7439 else if (quoted) {
7440 if (*s == '\\') qdpair = 1;
7441 else if (*s == '"') quoted = 0;
7442 }
7443 else if (*s == '"') quoted = 1;
7444 else if (*s == ',' || *s == ';') return s;
7445 }
7446 return s;
7447}
7448
7449/* Delete a value in a header between delimiters <from> and <next> in buffer
7450 * <buf>. The number of characters displaced is returned, and the pointer to
7451 * the first delimiter is updated if required. The function tries as much as
7452 * possible to respect the following principles :
7453 * - replace <from> delimiter by the <next> one unless <from> points to a
7454 * colon, in which case <next> is simply removed
7455 * - set exactly one space character after the new first delimiter, unless
7456 * there are not enough characters in the block being moved to do so.
7457 * - remove unneeded spaces before the previous delimiter and after the new
7458 * one.
7459 *
7460 * It is the caller's responsibility to ensure that :
7461 * - <from> points to a valid delimiter or the colon ;
7462 * - <next> points to a valid delimiter or the final CR/LF ;
7463 * - there are non-space chars before <from> ;
7464 * - there is a CR/LF at or after <next>.
7465 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7466int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7467{
7468 char *prev = *from;
7469
7470 if (*prev == ':') {
7471 /* We're removing the first value, preserve the colon and add a
7472 * space if possible.
7473 */
7474 if (!http_is_crlf[(unsigned char)*next])
7475 next++;
7476 prev++;
7477 if (prev < next)
7478 *prev++ = ' ';
7479
7480 while (http_is_spht[(unsigned char)*next])
7481 next++;
7482 } else {
7483 /* Remove useless spaces before the old delimiter. */
7484 while (http_is_spht[(unsigned char)*(prev-1)])
7485 prev--;
7486 *from = prev;
7487
7488 /* copy the delimiter and if possible a space if we're
7489 * not at the end of the line.
7490 */
7491 if (!http_is_crlf[(unsigned char)*next]) {
7492 *prev++ = *next++;
7493 if (prev + 1 < next)
7494 *prev++ = ' ';
7495 while (http_is_spht[(unsigned char)*next])
7496 next++;
7497 }
7498 }
7499 return buffer_replace2(buf, prev, next, NULL, 0);
7500}
7501
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7502/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7503 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7504 * desirable to call it only when needed. This code is quite complex because
7505 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7506 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7507 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7508void manage_client_side_cookies(struct stream *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7509{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7510 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7511 struct session *sess = s->sess;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7512 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7513 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7514 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7515 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7516
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7517 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7518 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7519 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7520
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7521 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7522 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7523 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7524
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7525 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7526 hdr_beg = hdr_next;
7527 hdr_end = hdr_beg + cur_hdr->len;
7528 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7529
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7530 /* We have one full header between hdr_beg and hdr_end, and the
7531 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7532 * "Cookie:" headers.
7533 */
7534
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7535 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7536 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7537 old_idx = cur_idx;
7538 continue;
7539 }
7540
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7541 del_from = NULL; /* nothing to be deleted */
7542 preserve_hdr = 0; /* assume we may kill the whole header */
7543
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7544 /* Now look for cookies. Conforming to RFC2109, we have to support
7545 * attributes whose name begin with a '$', and associate them with
7546 * the right cookie, if we want to delete this cookie.
7547 * So there are 3 cases for each cookie read :
7548 * 1) it's a special attribute, beginning with a '$' : ignore it.
7549 * 2) it's a server id cookie that we *MAY* want to delete : save
7550 * some pointers on it (last semi-colon, beginning of cookie...)
7551 * 3) it's an application cookie : we *MAY* have to delete a previous
7552 * "special" cookie.
7553 * At the end of loop, if a "special" cookie remains, we may have to
7554 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7555 * *MUST* delete it.
7556 *
7557 * Note: RFC2965 is unclear about the processing of spaces around
7558 * the equal sign in the ATTR=VALUE form. A careful inspection of
7559 * the RFC explicitly allows spaces before it, and not within the
7560 * tokens (attrs or values). An inspection of RFC2109 allows that
7561 * too but section 10.1.3 lets one think that spaces may be allowed
7562 * after the equal sign too, resulting in some (rare) buggy
7563 * implementations trying to do that. So let's do what servers do.
7564 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7565 * allowed quoted strings in values, with any possible character
7566 * after a backslash, including control chars and delimitors, which
7567 * causes parsing to become ambiguous. Browsers also allow spaces
7568 * within values even without quotes.
7569 *
7570 * We have to keep multiple pointers in order to support cookie
7571 * removal at the beginning, middle or end of header without
7572 * corrupting the header. All of these headers are valid :
7573 *
7574 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7575 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7576 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7577 * | | | | | | | | |
7578 * | | | | | | | | hdr_end <--+
7579 * | | | | | | | +--> next
7580 * | | | | | | +----> val_end
7581 * | | | | | +-----------> val_beg
7582 * | | | | +--------------> equal
7583 * | | | +----------------> att_end
7584 * | | +---------------------> att_beg
7585 * | +--------------------------> prev
7586 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7587 */
7588
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7589 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7590 /* Iterate through all cookies on this line */
7591
7592 /* find att_beg */
7593 att_beg = prev + 1;
7594 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7595 att_beg++;
7596
7597 /* find att_end : this is the first character after the last non
7598 * space before the equal. It may be equal to hdr_end.
7599 */
7600 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7601
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7602 while (equal < hdr_end) {
7603 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7604 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7605 if (http_is_spht[(unsigned char)*equal++])
7606 continue;
7607 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7608 }
7609
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7610 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7611 * is between <att_beg> and <equal>, both may be identical.
7612 */
7613
7614 /* look for end of cookie if there is an equal sign */
7615 if (equal < hdr_end && *equal == '=') {
7616 /* look for the beginning of the value */
7617 val_beg = equal + 1;
7618 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7619 val_beg++;
7620
7621 /* find the end of the value, respecting quotes */
7622 next = find_cookie_value_end(val_beg, hdr_end);
7623
7624 /* make val_end point to the first white space or delimitor after the value */
7625 val_end = next;
7626 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7627 val_end--;
7628 } else {
7629 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7630 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7631
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7632 /* We have nothing to do with attributes beginning with '$'. However,
7633 * they will automatically be removed if a header before them is removed,
7634 * since they're supposed to be linked together.
7635 */
7636 if (*att_beg == '$')
7637 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7638
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7639 /* Ignore cookies with no equal sign */
7640 if (equal == next) {
7641 /* This is not our cookie, so we must preserve it. But if we already
7642 * scheduled another cookie for removal, we cannot remove the
7643 * complete header, but we can remove the previous block itself.
7644 */
7645 preserve_hdr = 1;
7646 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7647 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7648 val_end += delta;
7649 next += delta;
7650 hdr_end += delta;
7651 hdr_next += delta;
7652 cur_hdr->len += delta;
7653 http_msg_move_end(&txn->req, delta);
7654 prev = del_from;
7655 del_from = NULL;
7656 }
7657 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7658 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7659
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7660 /* if there are spaces around the equal sign, we need to
7661 * strip them otherwise we'll get trouble for cookie captures,
7662 * or even for rewrites. Since this happens extremely rarely,
7663 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7664 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7665 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7666 int stripped_before = 0;
7667 int stripped_after = 0;
7668
7669 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7670 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7671 equal += stripped_before;
7672 val_beg += stripped_before;
7673 }
7674
7675 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7676 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7677 val_beg += stripped_after;
7678 stripped_before += stripped_after;
7679 }
7680
7681 val_end += stripped_before;
7682 next += stripped_before;
7683 hdr_end += stripped_before;
7684 hdr_next += stripped_before;
7685 cur_hdr->len += stripped_before;
7686 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7687 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7688 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7689
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7690 /* First, let's see if we want to capture this cookie. We check
7691 * that we don't already have a client side cookie, because we
7692 * can only capture one. Also as an optimisation, we ignore
7693 * cookies shorter than the declared name.
7694 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7695 if (sess->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7696 (val_end - att_beg >= sess->fe->capture_namelen) &&
7697 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7698 int log_len = val_end - att_beg;
7699
7700 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7701 Alert("HTTP logging : out of memory.\n");
7702 } else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]7703 if (log_len > sess->fe->capture_len)
7704 log_len = sess->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7705 memcpy(txn->cli_cookie, att_beg, log_len);
7706 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7707 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7708 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7709
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7710 /* Persistence cookies in passive, rewrite or insert mode have the
7711 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7712 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7713 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7714 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7715 * For cookies in prefix mode, the form is :
7716 *
7717 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7718 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7719 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7720 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7721 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7722 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7723
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7724 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7725 * have the server ID between val_beg and delim, and the original cookie between
7726 * delim+1 and val_end. Otherwise, delim==val_end :
7727 *
7728 * Cookie: NAME=SRV; # in all but prefix modes
7729 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7730 * | || || | |+-> next
7731 * | || || | +--> val_end
7732 * | || || +---------> delim
7733 * | || |+------------> val_beg
7734 * | || +-------------> att_end = equal
7735 * | |+-----------------> att_beg
7736 * | +------------------> prev
7737 * +-------------------------> hdr_beg
7738 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7739
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7740 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7741 for (delim = val_beg; delim < val_end; delim++)
7742 if (*delim == COOKIE_DELIM)
7743 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7744 } else {
7745 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7746 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7747 /* Now check if the cookie contains a date field, which would
7748 * appear after a vertical bar ('|') just after the server name
7749 * and before the delimiter.
7750 */
7751 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7752 if (vbar1) {
7753 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7754 * right is the last seen date. It is a base64 encoded
7755 * 30-bit value representing the UNIX date since the
7756 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7757 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7758 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7759 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7760 if (val_end - vbar1 >= 5) {
7761 val = b64tos30(vbar1);
7762 if (val > 0)
7763 txn->cookie_last_date = val << 2;
7764 }
7765 /* look for a second vertical bar */
7766 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7767 if (vbar1 && (val_end - vbar1 > 5)) {
7768 val = b64tos30(vbar1 + 1);
7769 if (val > 0)
7770 txn->cookie_first_date = val << 2;
7771 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7772 }
7773 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7774
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7775 /* if the cookie has an expiration date and the proxy wants to check
7776 * it, then we do that now. We first check if the cookie is too old,
7777 * then only if it has expired. We detect strict overflow because the
7778 * time resolution here is not great (4 seconds). Cookies with dates
7779 * in the future are ignored if their offset is beyond one day. This
7780 * allows an admin to fix timezone issues without expiring everyone
7781 * and at the same time avoids keeping unwanted side effects for too
7782 * long.
7783 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7784 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7785 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7786 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7787 txn->flags &= ~TX_CK_MASK;
7788 txn->flags |= TX_CK_OLD;
7789 delim = val_beg; // let's pretend we have not found the cookie
7790 txn->cookie_first_date = 0;
7791 txn->cookie_last_date = 0;
7792 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7793 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7794 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7795 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7796 txn->flags &= ~TX_CK_MASK;
7797 txn->flags |= TX_CK_EXPIRED;
7798 delim = val_beg; // let's pretend we have not found the cookie
7799 txn->cookie_first_date = 0;
7800 txn->cookie_last_date = 0;
7801 }
7802
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7803 /* Here, we'll look for the first running server which supports the cookie.
7804 * This allows to share a same cookie between several servers, for example
7805 * to dedicate backup servers to specific servers only.
7806 * However, to prevent clients from sticking to cookie-less backup server
7807 * when they have incidentely learned an empty cookie, we simply ignore
7808 * empty cookies and mark them as invalid.
7809 * The same behaviour is applied when persistence must be ignored.
7810 */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7811 if ((delim == val_beg) || (s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7812 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7813
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7814 while (srv) {
7815 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7816 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7817 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7818 (s->be->options & PR_O_PERSIST) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7819 (s->flags & SF_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7820 /* we found the server and we can use it */
7821 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7822 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7823 s->flags |= SF_DIRECT | SF_ASSIGNED;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7824 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7825 break;
7826 } else {
7827 /* we found a server, but it's down,
7828 * mark it as such and go on in case
7829 * another one is available.
7830 */
7831 txn->flags &= ~TX_CK_MASK;
7832 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7833 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7834 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7835 srv = srv->next;
7836 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7837
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7838 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7839 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7840 txn->flags &= ~TX_CK_MASK;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7841 if ((s->flags & (SF_IGNORE_PRST | SF_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7842 txn->flags |= TX_CK_UNUSED;
7843 else
7844 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7845 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7846
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7847 /* depending on the cookie mode, we may have to either :
7848 * - delete the complete cookie if we're in insert+indirect mode, so that
7849 * the server never sees it ;
7850 * - remove the server id from the cookie value, and tag the cookie as an
7851 * application cookie so that it does not get accidentely removed later,
7852 * if we're in cookie prefix mode
7853 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7854 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7855 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7856
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7857 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7858 val_end += delta;
7859 next += delta;
7860 hdr_end += delta;
7861 hdr_next += delta;
7862 cur_hdr->len += delta;
7863 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7864
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7865 del_from = NULL;
7866 preserve_hdr = 1; /* we want to keep this cookie */
7867 }
7868 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7869 (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]7870 del_from = prev;
7871 }
7872 } else {
7873 /* This is not our cookie, so we must preserve it. But if we already
7874 * scheduled another cookie for removal, we cannot remove the
7875 * complete header, but we can remove the previous block itself.
7876 */
7877 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7878
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7879 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7880 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7881 if (att_beg >= del_from)
7882 att_beg += delta;
7883 if (att_end >= del_from)
7884 att_end += delta;
7885 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7886 val_end += delta;
7887 next += delta;
7888 hdr_end += delta;
7889 hdr_next += delta;
7890 cur_hdr->len += delta;
7891 http_msg_move_end(&txn->req, delta);
7892 prev = del_from;
7893 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7894 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7895 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7896
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7897 /* Look for the appsession cookie unless persistence must be ignored */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]7898 if (!(s->flags & SF_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7899 int cmp_len, value_len;
7900 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7901
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7902 if (s->be->options2 & PR_O2_AS_PFX) {
7903 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
7904 value_begin = att_beg + s->be->appsession_name_len;
7905 value_len = val_end - att_beg - s->be->appsession_name_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7906 } else {
7907 cmp_len = att_end - att_beg;
7908 value_begin = val_beg;
7909 value_len = val_end - val_beg;
7910 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7911
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7912 /* let's see if the cookie is our appcookie */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7913 if (cmp_len == s->be->appsession_name_len &&
7914 memcmp(att_beg, s->be->appsession_name, cmp_len) == 0) {
7915 manage_client_side_appsession(s, value_begin, value_len);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7916 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7917 }
7918
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7919 /* continue with next cookie on this header line */
7920 att_beg = next;
7921 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7922
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7923 /* There are no more cookies on this line.
7924 * We may still have one (or several) marked for deletion at the
7925 * end of the line. We must do this now in two ways :
7926 * - if some cookies must be preserved, we only delete from the
7927 * mark to the end of line ;
7928 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7929 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7930 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7931 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7932 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7933 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7934 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7935 cur_hdr->len += delta;
7936 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7937 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7938
7939 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7940 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7941 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7942 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7943 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7944 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7945 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7946 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7947 }
7948
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7949 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7950 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7951 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7952}
7953
7954
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7955/* Iterate the same filter through all response headers contained in <rtr>.
7956 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7957 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]7958int 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]7959{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7960 char *cur_ptr, *cur_end, *cur_next;
7961 int cur_idx, old_idx, last_hdr;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]7962 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7963 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7964 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7965
7966 last_hdr = 0;
7967
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7968 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7969 old_idx = 0;
7970
7971 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7972 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7973 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7974 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7975 (exp->action == ACT_ALLOW ||
7976 exp->action == ACT_DENY))
7977 return 0;
7978
7979 cur_idx = txn->hdr_idx.v[old_idx].next;
7980 if (!cur_idx)
7981 break;
7982
7983 cur_hdr = &txn->hdr_idx.v[cur_idx];
7984 cur_ptr = cur_next;
7985 cur_end = cur_ptr + cur_hdr->len;
7986 cur_next = cur_end + cur_hdr->cr + 1;
7987
7988 /* Now we have one header between cur_ptr and cur_end,
7989 * and the next header starts at cur_next.
7990 */
7991
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7992 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]7993 switch (exp->action) {
7994 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7995 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7996 last_hdr = 1;
7997 break;
7998
7999 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8000 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8001 last_hdr = 1;
8002 break;
8003
8004 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8005 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8006 if (trash.len < 0)
8007 return -1;
8008
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8009 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8010 /* FIXME: if the user adds a newline in the replacement, the
8011 * index will not be recalculated for now, and the new line
8012 * will not be counted as a new header.
8013 */
8014
8015 cur_end += delta;
8016 cur_next += delta;
8017 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8018 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8019 break;
8020
8021 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8022 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8023 cur_next += delta;
8024
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8025 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8026 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8027 txn->hdr_idx.used--;
8028 cur_hdr->len = 0;
8029 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8030 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8031 break;
8032
8033 }
8034 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8035
8036 /* keep the link from this header to next one in case of later
8037 * removal of next header.
8038 */
8039 old_idx = cur_idx;
8040 }
8041 return 0;
8042}
8043
8044
8045/* Apply the filter to the status line in the response buffer <rtr>.
8046 * Returns 0 if nothing has been done, 1 if the filter has been applied,
8047 * or -1 if a replacement resulted in an invalid status line.
8048 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8049int 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]8050{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8051 char *cur_ptr, *cur_end;
8052 int done;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8053 struct http_txn *txn = s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8054 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8055
8056
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8057 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8058 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8059 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8060 (exp->action == ACT_ALLOW ||
8061 exp->action == ACT_DENY))
8062 return 0;
8063 else if (exp->action == ACT_REMOVE)
8064 return 0;
8065
8066 done = 0;
8067
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8068 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]8069 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8070
8071 /* Now we have the status line between cur_ptr and cur_end */
8072
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]8073 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]8074 switch (exp->action) {
8075 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8076 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8077 done = 1;
8078 break;
8079
8080 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8081 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8082 done = 1;
8083 break;
8084
8085 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8086 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
8087 if (trash.len < 0)
8088 return -1;
8089
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8090 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8091 /* FIXME: if the user adds a newline in the replacement, the
8092 * index will not be recalculated for now, and the new line
8093 * will not be counted as a new header.
8094 */
8095
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8096 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8097 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8098 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]8099 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8100 cur_ptr, cur_end + 1,
8101 NULL, NULL);
8102 if (unlikely(!cur_end))
8103 return -1;
8104
8105 /* we have a full respnse and we know that we have either a CR
8106 * or an LF at <ptr>.
8107 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8108 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]8109 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]8110 /* there is no point trying this regex on headers */
8111 return 1;
8112 }
8113 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8114 return done;
8115}
8116
8117
8118
8119/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8120 * 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]8121 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
8122 * unparsable response.
8123 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8124int apply_filters_to_response(struct stream *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8125{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8126 struct session *sess = s->sess;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8127 struct http_txn *txn = s->txn;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8128 struct hdr_exp *exp;
8129
8130 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8131 int ret;
8132
8133 /*
8134 * The interleaving of transformations and verdicts
8135 * makes it difficult to decide to continue or stop
8136 * the evaluation.
8137 */
8138
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8139 if (txn->flags & TX_SVDENY)
8140 break;
8141
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8142 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8143 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
8144 exp->action == ACT_PASS)) {
8145 exp = exp->next;
8146 continue;
8147 }
8148
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8149 /* if this filter had a condition, evaluate it now and skip to
8150 * next filter if the condition does not match.
8151 */
8152 if (exp->cond) {
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]8153 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]8154 ret = acl_pass(ret);
8155 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
8156 ret = !ret;
8157 if (!ret)
8158 continue;
8159 }
8160
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8161 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]8162 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8163 if (unlikely(ret < 0))
8164 return -1;
8165
8166 if (likely(ret == 0)) {
8167 /* The filter did not match the response, it can be
8168 * iterated through all headers.
8169 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]8170 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
8171 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8172 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8173 }
8174 return 0;
8175}
8176
8177
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8178/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]8179 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8180 * desirable to call it only when needed. This function is also used when we
8181 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8182 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8183void manage_server_side_cookies(struct stream *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8184{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8185 struct http_txn *txn = s->txn;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8186 struct session *sess = s->sess;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8187 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8188 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8189 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8190 char *hdr_beg, *hdr_end, *hdr_next;
8191 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8192
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8193 /* Iterate through the headers.
8194 * we start with the start line.
8195 */
8196 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8197 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8198
8199 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
8200 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8201 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8202
8203 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8204 hdr_beg = hdr_next;
8205 hdr_end = hdr_beg + cur_hdr->len;
8206 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8207
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8208 /* We have one full header between hdr_beg and hdr_end, and the
8209 * next header starts at hdr_next. We're only interested in
8210 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8211 */
8212
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8213 is_cookie2 = 0;
8214 prev = hdr_beg + 10;
8215 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8216 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8217 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
8218 if (!val) {
8219 old_idx = cur_idx;
8220 continue;
8221 }
8222 is_cookie2 = 1;
8223 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8224 }
8225
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8226 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8227 * <prev> points to the colon.
8228 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8229 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8230
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8231 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8232 * check-cache is enabled) and we are not interested in checking
8233 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8234 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8235 if (s->be->cookie_name == NULL &&
8236 s->be->appsession_name == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8237 sess->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8238 return;
8239
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8240 /* OK so now we know we have to process this response cookie.
8241 * The format of the Set-Cookie header is slightly different
8242 * from the format of the Cookie header in that it does not
8243 * support the comma as a cookie delimiter (thus the header
8244 * cannot be folded) because the Expires attribute described in
8245 * the original Netscape's spec may contain an unquoted date
8246 * with a comma inside. We have to live with this because
8247 * many browsers don't support Max-Age and some browsers don't
8248 * support quoted strings. However the Set-Cookie2 header is
8249 * clean.
8250 *
8251 * We have to keep multiple pointers in order to support cookie
8252 * removal at the beginning, middle or end of header without
8253 * corrupting the header (in case of set-cookie2). A special
8254 * pointer, <scav> points to the beginning of the set-cookie-av
8255 * fields after the first semi-colon. The <next> pointer points
8256 * either to the end of line (set-cookie) or next unquoted comma
8257 * (set-cookie2). All of these headers are valid :
8258 *
8259 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8260 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8261 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8262 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8263 * | | | | | | | | | |
8264 * | | | | | | | | +-> next hdr_end <--+
8265 * | | | | | | | +------------> scav
8266 * | | | | | | +--------------> val_end
8267 * | | | | | +--------------------> val_beg
8268 * | | | | +----------------------> equal
8269 * | | | +------------------------> att_end
8270 * | | +----------------------------> att_beg
8271 * | +------------------------------> prev
8272 * +-----------------------------------------> hdr_beg
8273 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8274
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8275 for (; prev < hdr_end; prev = next) {
8276 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8277
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8278 /* find att_beg */
8279 att_beg = prev + 1;
8280 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8281 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8282
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8283 /* find att_end : this is the first character after the last non
8284 * space before the equal. It may be equal to hdr_end.
8285 */
8286 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8287
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8288 while (equal < hdr_end) {
8289 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8290 break;
8291 if (http_is_spht[(unsigned char)*equal++])
8292 continue;
8293 att_end = equal;
8294 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8295
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8296 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8297 * is between <att_beg> and <equal>, both may be identical.
8298 */
8299
8300 /* look for end of cookie if there is an equal sign */
8301 if (equal < hdr_end && *equal == '=') {
8302 /* look for the beginning of the value */
8303 val_beg = equal + 1;
8304 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8305 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8306
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8307 /* find the end of the value, respecting quotes */
8308 next = find_cookie_value_end(val_beg, hdr_end);
8309
8310 /* make val_end point to the first white space or delimitor after the value */
8311 val_end = next;
8312 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8313 val_end--;
8314 } else {
8315 /* <equal> points to next comma, semi-colon or EOL */
8316 val_beg = val_end = next = equal;
8317 }
8318
8319 if (next < hdr_end) {
8320 /* Set-Cookie2 supports multiple cookies, and <next> points to
8321 * a colon or semi-colon before the end. So skip all attr-value
8322 * pairs and look for the next comma. For Set-Cookie, since
8323 * commas are permitted in values, skip to the end.
8324 */
8325 if (is_cookie2)
8326 next = find_hdr_value_end(next, hdr_end);
8327 else
8328 next = hdr_end;
8329 }
8330
8331 /* Now everything is as on the diagram above */
8332
8333 /* Ignore cookies with no equal sign */
8334 if (equal == val_end)
8335 continue;
8336
8337 /* If there are spaces around the equal sign, we need to
8338 * strip them otherwise we'll get trouble for cookie captures,
8339 * or even for rewrites. Since this happens extremely rarely,
8340 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8341 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8342 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8343 int stripped_before = 0;
8344 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8345
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8346 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8347 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8348 equal += stripped_before;
8349 val_beg += stripped_before;
8350 }
8351
8352 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8353 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8354 val_beg += stripped_after;
8355 stripped_before += stripped_after;
8356 }
8357
8358 val_end += stripped_before;
8359 next += stripped_before;
8360 hdr_end += stripped_before;
8361 hdr_next += stripped_before;
8362 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8363 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8364 }
8365
8366 /* First, let's see if we want to capture this cookie. We check
8367 * that we don't already have a server side cookie, because we
8368 * can only capture one. Also as an optimisation, we ignore
8369 * cookies shorter than the declared name.
8370 */
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8371 if (sess->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8372 txn->srv_cookie == NULL &&
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8373 (val_end - att_beg >= sess->fe->capture_namelen) &&
8374 memcmp(att_beg, sess->fe->capture_name, sess->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8375 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8376 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8377 Alert("HTTP logging : out of memory.\n");
8378 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8379 else {
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]8380 if (log_len > sess->fe->capture_len)
8381 log_len = sess->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8382 memcpy(txn->srv_cookie, att_beg, log_len);
8383 txn->srv_cookie[log_len] = 0;
8384 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8385 }
8386
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8387 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8388 /* now check if we need to process it for persistence */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8389 if (!(s->flags & SF_IGNORE_PRST) &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8390 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8391 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8392 /* assume passive cookie by default */
8393 txn->flags &= ~TX_SCK_MASK;
8394 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8395
8396 /* If the cookie is in insert mode on a known server, we'll delete
8397 * this occurrence because we'll insert another one later.
8398 * 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]8399 * a direct access.
8400 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8401 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8402 /* The "preserve" flag was set, we don't want to touch the
8403 * server's cookie.
8404 */
8405 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8406 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]8407 ((s->flags & SF_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8408 /* this cookie must be deleted */
8409 if (*prev == ':' && next == hdr_end) {
8410 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8411 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8412 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8413 txn->hdr_idx.used--;
8414 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8415 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8416 hdr_next += delta;
8417 http_msg_move_end(&txn->rsp, delta);
8418 /* note: while both invalid now, <next> and <hdr_end>
8419 * are still equal, so the for() will stop as expected.
8420 */
8421 } else {
8422 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8423 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8424 next = prev;
8425 hdr_end += delta;
8426 hdr_next += delta;
8427 cur_hdr->len += delta;
8428 http_msg_move_end(&txn->rsp, delta);
8429 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8430 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8431 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8432 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8433 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8434 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8435 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8436 * with this server since we know it.
8437 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8438 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8439 next += delta;
8440 hdr_end += delta;
8441 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8442 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8443 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8444
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8445 txn->flags &= ~TX_SCK_MASK;
8446 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8447 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8448 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8449 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8450 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8451 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8452 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8453 next += delta;
8454 hdr_end += delta;
8455 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8456 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8457 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8458
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8459 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8460 txn->flags &= ~TX_SCK_MASK;
8461 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8462 }
8463 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]8464 /* 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]8465 else if (!(s->flags & SF_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8466 int cmp_len, value_len;
8467 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8468
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8469 if (s->be->options2 & PR_O2_AS_PFX) {
8470 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
8471 value_begin = att_beg + s->be->appsession_name_len;
8472 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]8473 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8474 cmp_len = att_end - att_beg;
8475 value_begin = val_beg;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8476 value_len = MIN(s->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8477 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8478
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8479 if ((cmp_len == s->be->appsession_name_len) &&
8480 (memcmp(att_beg, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8481 /* free a possibly previously allocated memory */
8482 pool_free2(apools.sessid, txn->sessid);
8483
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8484 /* Store the sessid in the stream for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8485 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8486 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8487 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]8488 return;
8489 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8490 memcpy(txn->sessid, value_begin, value_len);
8491 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8492 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8493 }
8494 /* that's done for this cookie, check the next one on the same
8495 * line when next != hdr_end (only if is_cookie2).
8496 */
8497 }
8498 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8499 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8500 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8501
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8502 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8503 appsess *asession = NULL;
8504 /* only do insert, if lookup fails */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8505 asession = appsession_hash_lookup(&(s->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8506 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]8507 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8508 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
8509 Alert("Not enough Memory process_srv():asession:calloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8510 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8511 return;
8512 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8513 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
8514
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8515 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
8516 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8517 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8518 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8519 return;
8520 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8521 memcpy(asession->sessid, txn->sessid, s->be->appsession_len);
8522 asession->sessid[s->be->appsession_len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8523
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8524 server_id_len = strlen(objt_server(s->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8525 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8526 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8527 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8528 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8529 return;
8530 }
8531 asession->serverid[0] = '\0';
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8532 memcpy(asession->serverid, objt_server(s->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8533
8534 asession->request_count = 0;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8535 appsession_hash_insert(&(s->be->htbl_proxy), asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8536 }
8537
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8538 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8539 asession->request_count++;
8540 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8541}
8542
8543
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8544/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8545 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8546 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8547void check_response_for_cacheability(struct stream *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8548{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8549 struct http_txn *txn = s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8550 char *p1, *p2;
8551
8552 char *cur_ptr, *cur_end, *cur_next;
8553 int cur_idx;
8554
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8555 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8556 return;
8557
8558 /* Iterate through the headers.
8559 * we start with the start line.
8560 */
8561 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8562 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8563
8564 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8565 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8566 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8567
8568 cur_hdr = &txn->hdr_idx.v[cur_idx];
8569 cur_ptr = cur_next;
8570 cur_end = cur_ptr + cur_hdr->len;
8571 cur_next = cur_end + cur_hdr->cr + 1;
8572
8573 /* We have one full header between cur_ptr and cur_end, and the
8574 * next header starts at cur_next. We're only interested in
8575 * "Cookie:" headers.
8576 */
8577
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8578 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8579 if (val) {
8580 if ((cur_end - (cur_ptr + val) >= 8) &&
8581 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8582 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8583 return;
8584 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8585 }
8586
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8587 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8588 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8589 continue;
8590
8591 /* OK, right now we know we have a cache-control header at cur_ptr */
8592
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8593 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8594
8595 if (p1 >= cur_end) /* no more info */
8596 continue;
8597
8598 /* p1 is at the beginning of the value */
8599 p2 = p1;
8600
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8601 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8602 p2++;
8603
8604 /* we have a complete value between p1 and p2 */
8605 if (p2 < cur_end && *p2 == '=') {
8606 /* we have something of the form no-cache="set-cookie" */
8607 if ((cur_end - p1 >= 21) &&
8608 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8609 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8610 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8611 continue;
8612 }
8613
8614 /* OK, so we know that either p2 points to the end of string or to a comma */
8615 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8616 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8617 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8618 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8619 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 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 return;
8622 }
8623
8624 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8625 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8626 continue;
8627 }
8628 }
8629}
8630
8631
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8632/*
8633 * Try to retrieve a known appsession in the URI, then the associated server.
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8634 * If the server is found, it's assigned to the stream.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8635 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8636void get_srv_from_appsession(struct stream *s, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8637{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8638 char *end_params, *first_param, *cur_param, *next_param;
8639 char separator;
8640 int value_len;
8641
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8642 int mode = s->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8643
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8644 if (s->be->appsession_name == NULL ||
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8645 (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]8646 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8647 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8648
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8649 first_param = NULL;
8650 switch (mode) {
8651 case PR_O2_AS_M_PP:
8652 first_param = memchr(begin, ';', len);
8653 break;
8654 case PR_O2_AS_M_QS:
8655 first_param = memchr(begin, '?', len);
8656 break;
8657 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8658
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8659 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8660 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8661 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8662
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8663 switch (mode) {
8664 case PR_O2_AS_M_PP:
8665 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
8666 end_params = (char *) begin + len;
8667 }
8668 separator = ';';
8669 break;
8670 case PR_O2_AS_M_QS:
8671 end_params = (char *) begin + len;
8672 separator = '&';
8673 break;
8674 default:
8675 /* unknown mode, shouldn't happen */
8676 return;
8677 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8678
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8679 cur_param = next_param = end_params;
8680 while (cur_param > first_param) {
8681 cur_param--;
8682 if ((cur_param[0] == separator) || (cur_param == first_param)) {
8683 /* let's see if this is the appsession parameter */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8684 if ((cur_param + s->be->appsession_name_len + 1 < next_param) &&
8685 ((s->be->options2 & PR_O2_AS_PFX) || cur_param[s->be->appsession_name_len + 1] == '=') &&
8686 (strncasecmp(cur_param + 1, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8687 /* Cool... it's the right one */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8688 cur_param += s->be->appsession_name_len + (s->be->options2 & PR_O2_AS_PFX ? 1 : 2);
8689 value_len = MIN(s->be->appsession_len, next_param - cur_param);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8690 if (value_len > 0) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8691 manage_client_side_appsession(s, cur_param, value_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8692 }
8693 break;
8694 }
8695 next_param = cur_param;
8696 }
8697 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8698#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]8699 Alert("get_srv_from_appsession\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8700 appsession_hash_dump(&(s->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8701#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8702}
8703
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8704/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8705 * 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]8706 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8707 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8708 * 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]8709 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8710 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8711 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8712 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8713int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8714{
8715 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8716 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8717 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8718
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8719 if (!uri_auth)
8720 return 0;
8721
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8722 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]8723 return 0;
8724
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8725 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8726 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8727 return 0;
8728
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8729 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8730 return 0;
8731
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8732 return 1;
8733}
8734
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8735/*
8736 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8737 * By default it tries to report the error position as msg->err_pos. However if
8738 * this one is not set, it will then report msg->next, which is the last known
8739 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8740 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8741 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8742void http_capture_bad_message(struct error_snapshot *es, struct stream *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8743 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8744 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8745{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8746 struct session *sess = strm_sess(s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8747 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8748 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8749
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8750 es->len = MIN(chn->buf->i, sizeof(es->buf));
8751 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8752 len1 = MIN(len1, es->len);
8753 len2 = es->len - len1; /* remaining data if buffer wraps */
8754
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8755 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8756 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8757 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8758
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8759 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8760 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8761 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8762 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8763
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8764 es->when = date; // user-visible date
8765 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8766 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8767 es->oe = other_end;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8768 if (objt_conn(sess->origin))
8769 es->src = __objt_conn(sess->origin)->addr.from;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8770 else
8771 memset(&es->src, 0, sizeof(es->src));
8772
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8773 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8774 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8775 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8776 es->s_flags = s->flags;
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8777 es->t_flags = s->txn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8778 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8779 es->b_out = chn->buf->o;
8780 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8781 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8782 es->m_clen = msg->chunk_len;
8783 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8784}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8785
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8786/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8787 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8788 * performed over the whole headers. Otherwise it must contain a valid header
8789 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8790 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8791 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8792 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8793 * -1. The value fetch stops at commas, so this function is suited for use with
8794 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8795 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8796 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8797unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8798 struct hdr_idx *idx, int occ,
8799 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8800{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8801 struct hdr_ctx local_ctx;
8802 char *ptr_hist[MAX_HDR_HISTORY];
8803 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8804 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8805 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8806
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8807 if (!ctx) {
8808 local_ctx.idx = 0;
8809 ctx = &local_ctx;
8810 }
8811
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8812 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8813 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8814 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8815 occ--;
8816 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8817 *vptr = ctx->line + ctx->val;
8818 *vlen = ctx->vlen;
8819 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8820 }
8821 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8822 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8823 }
8824
8825 /* negative occurrence, we scan all the list then walk back */
8826 if (-occ > MAX_HDR_HISTORY)
8827 return 0;
8828
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8829 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8830 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8831 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8832 len_hist[hist_ptr] = ctx->vlen;
8833 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8834 hist_ptr = 0;
8835 found++;
8836 }
8837 if (-occ > found)
8838 return 0;
8839 /* 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]8840 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8841 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8842 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8843 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8844 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8845 if (hist_ptr >= MAX_HDR_HISTORY)
8846 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8847 *vptr = ptr_hist[hist_ptr];
8848 *vlen = len_hist[hist_ptr];
8849 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8850}
8851
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8852/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8853 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8854 * performed over the whole headers. Otherwise it must contain a valid header
8855 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8856 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8857 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8858 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8859 * -1. This function differs from http_get_hdr() in that it only returns full
8860 * line header values and does not stop at commas.
8861 * The return value is 0 if nothing was found, or non-zero otherwise.
8862 */
8863unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8864 struct hdr_idx *idx, int occ,
8865 struct hdr_ctx *ctx, char **vptr, int *vlen)
8866{
8867 struct hdr_ctx local_ctx;
8868 char *ptr_hist[MAX_HDR_HISTORY];
8869 int len_hist[MAX_HDR_HISTORY];
8870 unsigned int hist_ptr;
8871 int found;
8872
8873 if (!ctx) {
8874 local_ctx.idx = 0;
8875 ctx = &local_ctx;
8876 }
8877
8878 if (occ >= 0) {
8879 /* search from the beginning */
8880 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8881 occ--;
8882 if (occ <= 0) {
8883 *vptr = ctx->line + ctx->val;
8884 *vlen = ctx->vlen;
8885 return 1;
8886 }
8887 }
8888 return 0;
8889 }
8890
8891 /* negative occurrence, we scan all the list then walk back */
8892 if (-occ > MAX_HDR_HISTORY)
8893 return 0;
8894
8895 found = hist_ptr = 0;
8896 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8897 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8898 len_hist[hist_ptr] = ctx->vlen;
8899 if (++hist_ptr >= MAX_HDR_HISTORY)
8900 hist_ptr = 0;
8901 found++;
8902 }
8903 if (-occ > found)
8904 return 0;
8905 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8906 * find occurrence -occ, so we have to check [hist_ptr+occ].
8907 */
8908 hist_ptr += occ;
8909 if (hist_ptr >= MAX_HDR_HISTORY)
8910 hist_ptr -= MAX_HDR_HISTORY;
8911 *vptr = ptr_hist[hist_ptr];
8912 *vlen = len_hist[hist_ptr];
8913 return 1;
8914}
8915
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8916/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8917 * Print a debug line with a header. Always stop at the first CR or LF char,
8918 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8919 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8920 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8921void debug_hdr(const char *dir, struct stream *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8922{
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8923 struct session *sess = strm_sess(s);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8924 int max;
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8925
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8926 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8927 dir,
Willy Tarreau9ad7bd42015-04-03 19:19:59 +0200[diff] [blame]8928 objt_conn(sess->origin) ? (unsigned short)objt_conn(sess->origin)->t.sock.fd : -1,
Willy Tarreau350f4872014-11-28 14:42:25 +0100[diff] [blame]8929 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]8930
8931 for (max = 0; start + max < end; max++)
8932 if (start[max] == '\r' || start[max] == '\n')
8933 break;
8934
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8935 UBOUND(max, trash.size - trash.len - 3);
8936 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8937 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8938 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8939}
8940
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8941
8942/* Allocate a new HTTP transaction for stream <s> unless there is one already.
8943 * The hdr_idx is allocated as well. In case of allocation failure, everything
8944 * allocated is freed and NULL is returned. Otherwise the new transaction is
8945 * assigned to the stream and returned.
8946 */
8947struct http_txn *http_alloc_txn(struct stream *s)
8948{
8949 struct http_txn *txn = s->txn;
8950
8951 if (txn)
8952 return txn;
8953
8954 txn = pool_alloc2(pool2_http_txn);
8955 if (!txn)
8956 return txn;
8957
8958 txn->hdr_idx.size = global.tune.max_http_hdr;
8959 txn->hdr_idx.v = pool_alloc2(pool2_hdr_idx);
8960 if (!txn->hdr_idx.v) {
8961 pool_free2(pool2_http_txn, txn);
8962 return NULL;
8963 }
8964
8965 s->txn = txn;
8966 return txn;
8967}
8968
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8969/*
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8970 * Initialize a new HTTP transaction for stream <s>. It is assumed that all
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8971 * the required fields are properly allocated and that we only need to (re)init
8972 * them. This should be used before processing any new request.
8973 */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]8974void http_init_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8975{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8976 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]8977 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8978
8979 txn->flags = 0;
8980 txn->status = -1;
8981
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8982 txn->cookie_first_date = 0;
8983 txn->cookie_last_date = 0;
8984
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]8985 txn->sessid = NULL;
8986 txn->srv_cookie = NULL;
8987 txn->cli_cookie = NULL;
8988 txn->uri = NULL;
8989
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8990 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8991 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8992 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8993 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8994 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8995 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8996 txn->req.chunk_len = 0LL;
8997 txn->req.body_len = 0LL;
8998 txn->rsp.chunk_len = 0LL;
8999 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9000 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
9001 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9002 txn->req.chn = &s->req;
9003 txn->rsp.chn = &s->res;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9004
9005 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9006
9007 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
9008 if (fe->options2 & PR_O2_REQBUG_OK)
9009 txn->req.err_pos = -1; /* let buggy requests pass */
9010
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9011 if (txn->hdr_idx.v)
9012 hdr_idx_init(&txn->hdr_idx);
9013}
9014
9015/* to be used at the end of a transaction */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9016void http_end_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9017{
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]9018 struct http_txn *txn = s->txn;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9019 struct proxy *fe = strm_fe(s);
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9020
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9021 /* release any possible compression context */
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9022 if (s->flags & SF_COMP_READY)
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9023 s->comp_algo->end(&s->comp_ctx);
9024 s->comp_algo = NULL;
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]9025 s->flags &= ~SF_COMP_READY;
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]9026
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9027 /* these ones will have been dynamically allocated */
9028 pool_free2(pool2_requri, txn->uri);
9029 pool_free2(pool2_capture, txn->cli_cookie);
9030 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]9031 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]9032 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9033
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]9034 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]9035 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9036 txn->uri = NULL;
9037 txn->srv_cookie = NULL;
9038 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9039
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9040 if (s->req_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9041 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]9042 for (h = fe->req_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9043 pool_free2(h->pool, s->req_cap[h->index]);
9044 memset(s->req_cap, 0, fe->nb_req_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9045 }
9046
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9047 if (s->res_cap) {
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9048 struct cap_hdr *h;
Willy Tarreaue36cbcb2015-04-03 15:40:56 +0200[diff] [blame]9049 for (h = fe->rsp_cap; h; h = h->next)
Willy Tarreaucb7dd012015-04-03 22:16:32 +0200[diff] [blame]9050 pool_free2(h->pool, s->res_cap[h->index]);
9051 memset(s->res_cap, 0, fe->nb_rsp_cap * sizeof(void *));
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]9052 }
9053
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9054}
9055
9056/* to be used at the end of a transaction to prepare a new one */
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9057void http_reset_txn(struct stream *s)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9058{
9059 http_end_txn(s);
9060 http_init_txn(s);
9061
Thierry FOURNIERbc4c1ac2015-02-25 13:36:14 +0100[diff] [blame]9062 /* reinitialise the current rule list pointer to NULL. We are sure that
9063 * any rulelist match the NULL pointer.
9064 */
9065 s->current_rule_list = NULL;
9066
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9067 s->be = strm_fe(s);
9068 s->logs.logwait = strm_fe(s)->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]9069 s->logs.level = 0;
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]9070 stream_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]9071 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]9072 /* re-init store persistence */
9073 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]9074 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]9075
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9076 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9077
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9078 s->req.flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9079
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]9080 /* We must trim any excess data from the response buffer, because we
9081 * may have blocked an invalid response from a server that we don't
9082 * want to accidentely forward once we disable the analysers, nor do
9083 * we want those data to come along with next response. A typical
9084 * example of such data would be from a buggy server responding to
9085 * a HEAD with some data, or sending more than the advertised
9086 * content-length.
9087 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9088 if (unlikely(s->res.buf->i))
9089 s->res.buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]9090
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9091 s->req.rto = strm_fe(s)->timeout.client;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9092 s->req.wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9093
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9094 s->res.rto = TICK_ETERNITY;
Willy Tarreaud0d8da92015-04-04 02:10:38 +0200[diff] [blame]9095 s->res.wto = strm_fe(s)->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9096
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]9097 s->req.rex = TICK_ETERNITY;
9098 s->req.wex = TICK_ETERNITY;
9099 s->req.analyse_exp = TICK_ETERNITY;
9100 s->res.rex = TICK_ETERNITY;
9101 s->res.wex = TICK_ETERNITY;
9102 s->res.analyse_exp = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]9103}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]9104
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9105void free_http_res_rules(struct list *r)
9106{
9107 struct http_res_rule *tr, *pr;
9108
9109 list_for_each_entry_safe(pr, tr, r, list) {
9110 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9111 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9112 free(pr);
9113 }
9114}
9115
9116void free_http_req_rules(struct list *r)
9117{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9118 struct http_req_rule *tr, *pr;
9119
9120 list_for_each_entry_safe(pr, tr, r, list) {
9121 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9122 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9123 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9124
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9125 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9126 free(pr);
9127 }
9128}
9129
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9130/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9131struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9132{
9133 struct http_req_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9134 struct http_req_action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9135 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9136 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9137
9138 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
9139 if (!rule) {
9140 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9141 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9142 }
9143
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9144 rule->deny_status = HTTP_ERR_403;
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9145 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9146 rule->action = HTTP_REQ_ACT_ALLOW;
9147 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]9148 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9149 int code;
9150 int hc;
9151
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9152 rule->action = HTTP_REQ_ACT_DENY;
9153 cur_arg = 1;
CJ Ess108b1dd2015-04-07 12:03:37 -0400[diff] [blame]9154 if (strcmp(args[cur_arg], "deny_status") == 0) {
9155 cur_arg++;
9156 if (!args[cur_arg]) {
9157 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing status code.\n",
9158 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9159 goto out_err;
9160 }
9161
9162 code = atol(args[cur_arg]);
9163 cur_arg++;
9164 for (hc = 0; hc < HTTP_ERR_SIZE; hc++) {
9165 if (http_err_codes[hc] == code) {
9166 rule->deny_status = hc;
9167 break;
9168 }
9169 }
9170
9171 if (hc >= HTTP_ERR_SIZE) {
9172 Warning("parsing [%s:%d] : status code %d not handled, using default code 403.\n",
9173 file, linenum, code);
9174 }
9175 }
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]9176 } else if (!strcmp(args[0], "tarpit")) {
9177 rule->action = HTTP_REQ_ACT_TARPIT;
9178 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9179 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9180 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9181 cur_arg = 1;
9182
9183 while(*args[cur_arg]) {
9184 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9185 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9186 cur_arg+=2;
9187 continue;
9188 } else
9189 break;
9190 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9191 } else if (!strcmp(args[0], "set-nice")) {
9192 rule->action = HTTP_REQ_ACT_SET_NICE;
9193 cur_arg = 1;
9194
9195 if (!*args[cur_arg] ||
9196 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9197 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
9198 file, linenum, args[0]);
9199 goto out_err;
9200 }
9201 rule->arg.nice = atoi(args[cur_arg]);
9202 if (rule->arg.nice < -1024)
9203 rule->arg.nice = -1024;
9204 else if (rule->arg.nice > 1024)
9205 rule->arg.nice = 1024;
9206 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9207 } else if (!strcmp(args[0], "set-tos")) {
9208#ifdef IP_TOS
9209 char *err;
9210 rule->action = HTTP_REQ_ACT_SET_TOS;
9211 cur_arg = 1;
9212
9213 if (!*args[cur_arg] ||
9214 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9215 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9216 file, linenum, args[0]);
9217 goto out_err;
9218 }
9219
9220 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9221 if (err && *err != '\0') {
9222 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9223 file, linenum, err, args[0]);
9224 goto out_err;
9225 }
9226 cur_arg++;
9227#else
9228 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9229 goto out_err;
9230#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9231 } else if (!strcmp(args[0], "set-mark")) {
9232#ifdef SO_MARK
9233 char *err;
9234 rule->action = HTTP_REQ_ACT_SET_MARK;
9235 cur_arg = 1;
9236
9237 if (!*args[cur_arg] ||
9238 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9239 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
9240 file, linenum, args[0]);
9241 goto out_err;
9242 }
9243
9244 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9245 if (err && *err != '\0') {
9246 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
9247 file, linenum, err, args[0]);
9248 goto out_err;
9249 }
9250 cur_arg++;
9251 global.last_checks |= LSTCHK_NETADM;
9252#else
9253 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9254 goto out_err;
9255#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9256 } else if (!strcmp(args[0], "set-log-level")) {
9257 rule->action = HTTP_REQ_ACT_SET_LOGL;
9258 cur_arg = 1;
9259
9260 if (!*args[cur_arg] ||
9261 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9262 bad_log_level:
9263 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
9264 file, linenum, args[0]);
9265 goto out_err;
9266 }
9267 if (strcmp(args[cur_arg], "silent") == 0)
9268 rule->arg.loglevel = -1;
9269 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
9270 goto bad_log_level;
9271 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9272 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9273 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
9274 cur_arg = 1;
9275
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]9276 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9277 (*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]9278 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9279 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9280 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9281 }
9282
9283 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9284 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9285 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]9286
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9287 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9288 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]9289 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9290 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9291 free(proxy->conf.lfs_file);
9292 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9293 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9294 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9295 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
9296 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]9297 cur_arg = 1;
9298
9299 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]9300 (*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]9301 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9302 file, linenum, args[0]);
9303 goto out_err;
9304 }
9305
9306 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9307 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9308 LIST_INIT(&rule->arg.hdr_add.fmt);
9309
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9310 error = NULL;
9311 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9312 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9313 args[cur_arg + 1], error);
9314 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9315 goto out_err;
9316 }
9317
9318 proxy->conf.args.ctx = ARGC_HRQ;
9319 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9320 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9321 file, linenum);
9322
9323 free(proxy->conf.lfs_file);
9324 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9325 proxy->conf.lfs_line = proxy->conf.args.line;
9326 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9327 } else if (strcmp(args[0], "del-header") == 0) {
9328 rule->action = HTTP_REQ_ACT_DEL_HDR;
9329 cur_arg = 1;
9330
9331 if (!*args[cur_arg] ||
9332 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9333 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9334 file, linenum, args[0]);
9335 goto out_err;
9336 }
9337
9338 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9339 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9340
9341 proxy->conf.args.ctx = ARGC_HRQ;
9342 free(proxy->conf.lfs_file);
9343 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9344 proxy->conf.lfs_line = proxy->conf.args.line;
9345 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9346 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9347 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9348 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9349 struct sample_expr *expr;
9350 unsigned int where;
9351 char *err = NULL;
9352
9353 cur_arg = 1;
9354 proxy->conf.args.ctx = ARGC_TRK;
9355
9356 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9357 if (!expr) {
9358 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9359 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9360 free(err);
9361 goto out_err;
9362 }
9363
9364 where = 0;
9365 if (proxy->cap & PR_CAP_FE)
9366 where |= SMP_VAL_FE_HRQ_HDR;
9367 if (proxy->cap & PR_CAP_BE)
9368 where |= SMP_VAL_BE_HRQ_HDR;
9369
9370 if (!(expr->fetch->val & where)) {
9371 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9372 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9373 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9374 args[cur_arg-1], sample_src_names(expr->fetch->use));
9375 free(expr);
9376 goto out_err;
9377 }
9378
9379 if (strcmp(args[cur_arg], "table") == 0) {
9380 cur_arg++;
9381 if (!args[cur_arg]) {
9382 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9383 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9384 free(expr);
9385 goto out_err;
9386 }
9387 /* we copy the table name for now, it will be resolved later */
9388 rule->act_prm.trk_ctr.table.n = strdup(args[cur_arg]);
9389 cur_arg++;
9390 }
9391 rule->act_prm.trk_ctr.expr = expr;
9392 rule->action = HTTP_REQ_ACT_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9393 } else if (strcmp(args[0], "redirect") == 0) {
9394 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9395 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9396
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9397 if ((redir = http_parse_redirect_rule(file, linenum, proxy, (const char **)args + 1, &errmsg, 1)) == NULL) {
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9398 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9399 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9400 goto out_err;
9401 }
9402
9403 /* this redirect rule might already contain a parsed condition which
9404 * we'll pass to the http-request rule.
9405 */
9406 rule->action = HTTP_REQ_ACT_REDIR;
9407 rule->arg.redir = redir;
9408 rule->cond = redir->cond;
9409 redir->cond = NULL;
9410 cur_arg = 2;
9411 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9412 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9413 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9414 rule->action = HTTP_REQ_ACT_ADD_ACL;
9415 /*
9416 * '+ 8' for 'add-acl('
9417 * '- 9' for 'add-acl(' + trailing ')'
9418 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9419 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9420
9421 cur_arg = 1;
9422
9423 if (!*args[cur_arg] ||
9424 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9425 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9426 file, linenum, args[0]);
9427 goto out_err;
9428 }
9429
9430 LIST_INIT(&rule->arg.map.key);
9431 proxy->conf.args.ctx = ARGC_HRQ;
9432 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9433 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9434 file, linenum);
9435 free(proxy->conf.lfs_file);
9436 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9437 proxy->conf.lfs_line = proxy->conf.args.line;
9438 cur_arg += 1;
9439 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9440 /* http-request del-acl(<reference (acl name)>) <key pattern> */
9441 rule->action = HTTP_REQ_ACT_DEL_ACL;
9442 /*
9443 * '+ 8' for 'del-acl('
9444 * '- 9' for 'del-acl(' + trailing ')'
9445 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9446 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9447
9448 cur_arg = 1;
9449
9450 if (!*args[cur_arg] ||
9451 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9452 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9453 file, linenum, args[0]);
9454 goto out_err;
9455 }
9456
9457 LIST_INIT(&rule->arg.map.key);
9458 proxy->conf.args.ctx = ARGC_HRQ;
9459 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9460 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9461 file, linenum);
9462 free(proxy->conf.lfs_file);
9463 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9464 proxy->conf.lfs_line = proxy->conf.args.line;
9465 cur_arg += 1;
9466 } else if (strncmp(args[0], "del-map", 7) == 0) {
9467 /* http-request del-map(<reference (map name)>) <key pattern> */
9468 rule->action = HTTP_REQ_ACT_DEL_MAP;
9469 /*
9470 * '+ 8' for 'del-map('
9471 * '- 9' for 'del-map(' + trailing ')'
9472 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9473 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9474
9475 cur_arg = 1;
9476
9477 if (!*args[cur_arg] ||
9478 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9479 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9480 file, linenum, args[0]);
9481 goto out_err;
9482 }
9483
9484 LIST_INIT(&rule->arg.map.key);
9485 proxy->conf.args.ctx = ARGC_HRQ;
9486 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9487 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9488 file, linenum);
9489 free(proxy->conf.lfs_file);
9490 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9491 proxy->conf.lfs_line = proxy->conf.args.line;
9492 cur_arg += 1;
9493 } else if (strncmp(args[0], "set-map", 7) == 0) {
9494 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
9495 rule->action = HTTP_REQ_ACT_SET_MAP;
9496 /*
9497 * '+ 8' for 'set-map('
9498 * '- 9' for 'set-map(' + trailing ')'
9499 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9500 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9501
9502 cur_arg = 1;
9503
9504 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9505 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9506 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9507 file, linenum, args[0]);
9508 goto out_err;
9509 }
9510
9511 LIST_INIT(&rule->arg.map.key);
9512 LIST_INIT(&rule->arg.map.value);
9513 proxy->conf.args.ctx = ARGC_HRQ;
9514
9515 /* key pattern */
9516 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9517 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9518 file, linenum);
9519
9520 /* value pattern */
9521 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9522 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9523 file, linenum);
9524 free(proxy->conf.lfs_file);
9525 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9526 proxy->conf.lfs_line = proxy->conf.args.line;
9527
9528 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9529 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9530 char *errmsg = NULL;
9531 cur_arg = 1;
9532 /* try in the module list */
9533 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9534 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9535 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9536 free(errmsg);
9537 goto out_err;
9538 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9539 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9540 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]9541 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9542 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9543 }
9544
9545 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9546 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9547 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9548
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9549 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9550 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9551 file, linenum, args[0], errmsg);
9552 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9553 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9554 }
9555 rule->cond = cond;
9556 }
9557 else if (*args[cur_arg]) {
9558 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9559 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9560 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9561 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9562 }
9563
9564 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9565 out_err:
9566 free(rule);
9567 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9568}
9569
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9570/* parse an "http-respose" rule */
9571struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9572{
9573 struct http_res_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9574 struct http_res_action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9575 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9576 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9577
9578 rule = calloc(1, sizeof(*rule));
9579 if (!rule) {
9580 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9581 goto out_err;
9582 }
9583
9584 if (!strcmp(args[0], "allow")) {
9585 rule->action = HTTP_RES_ACT_ALLOW;
9586 cur_arg = 1;
9587 } else if (!strcmp(args[0], "deny")) {
9588 rule->action = HTTP_RES_ACT_DENY;
9589 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9590 } else if (!strcmp(args[0], "set-nice")) {
9591 rule->action = HTTP_RES_ACT_SET_NICE;
9592 cur_arg = 1;
9593
9594 if (!*args[cur_arg] ||
9595 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9596 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9597 file, linenum, args[0]);
9598 goto out_err;
9599 }
9600 rule->arg.nice = atoi(args[cur_arg]);
9601 if (rule->arg.nice < -1024)
9602 rule->arg.nice = -1024;
9603 else if (rule->arg.nice > 1024)
9604 rule->arg.nice = 1024;
9605 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9606 } else if (!strcmp(args[0], "set-tos")) {
9607#ifdef IP_TOS
9608 char *err;
9609 rule->action = HTTP_RES_ACT_SET_TOS;
9610 cur_arg = 1;
9611
9612 if (!*args[cur_arg] ||
9613 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9614 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9615 file, linenum, args[0]);
9616 goto out_err;
9617 }
9618
9619 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9620 if (err && *err != '\0') {
9621 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9622 file, linenum, err, args[0]);
9623 goto out_err;
9624 }
9625 cur_arg++;
9626#else
9627 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9628 goto out_err;
9629#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9630 } else if (!strcmp(args[0], "set-mark")) {
9631#ifdef SO_MARK
9632 char *err;
9633 rule->action = HTTP_RES_ACT_SET_MARK;
9634 cur_arg = 1;
9635
9636 if (!*args[cur_arg] ||
9637 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9638 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9639 file, linenum, args[0]);
9640 goto out_err;
9641 }
9642
9643 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9644 if (err && *err != '\0') {
9645 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9646 file, linenum, err, args[0]);
9647 goto out_err;
9648 }
9649 cur_arg++;
9650 global.last_checks |= LSTCHK_NETADM;
9651#else
9652 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9653 goto out_err;
9654#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9655 } else if (!strcmp(args[0], "set-log-level")) {
9656 rule->action = HTTP_RES_ACT_SET_LOGL;
9657 cur_arg = 1;
9658
9659 if (!*args[cur_arg] ||
9660 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9661 bad_log_level:
9662 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9663 file, linenum, args[0]);
9664 goto out_err;
9665 }
9666 if (strcmp(args[cur_arg], "silent") == 0)
9667 rule->arg.loglevel = -1;
9668 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9669 goto bad_log_level;
9670 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9671 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9672 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
9673 cur_arg = 1;
9674
9675 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9676 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9677 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9678 file, linenum, args[0]);
9679 goto out_err;
9680 }
9681
9682 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9683 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9684 LIST_INIT(&rule->arg.hdr_add.fmt);
9685
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9686 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9687 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]9688 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9689 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9690 free(proxy->conf.lfs_file);
9691 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9692 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9693 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9694 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9695 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]9696 cur_arg = 1;
9697
9698 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9699 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9700 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9701 file, linenum, args[0]);
9702 goto out_err;
9703 }
9704
9705 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9706 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9707 LIST_INIT(&rule->arg.hdr_add.fmt);
9708
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9709 error = NULL;
9710 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9711 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9712 args[cur_arg + 1], error);
9713 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9714 goto out_err;
9715 }
9716
9717 proxy->conf.args.ctx = ARGC_HRQ;
9718 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9719 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9720 file, linenum);
9721
9722 free(proxy->conf.lfs_file);
9723 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9724 proxy->conf.lfs_line = proxy->conf.args.line;
9725 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9726 } else if (strcmp(args[0], "del-header") == 0) {
9727 rule->action = HTTP_RES_ACT_DEL_HDR;
9728 cur_arg = 1;
9729
9730 if (!*args[cur_arg] ||
9731 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9732 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9733 file, linenum, args[0]);
9734 goto out_err;
9735 }
9736
9737 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9738 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9739
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9740 proxy->conf.args.ctx = ARGC_HRS;
9741 free(proxy->conf.lfs_file);
9742 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9743 proxy->conf.lfs_line = proxy->conf.args.line;
9744 cur_arg += 1;
9745 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9746 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9747 rule->action = HTTP_RES_ACT_ADD_ACL;
9748 /*
9749 * '+ 8' for 'add-acl('
9750 * '- 9' for 'add-acl(' + trailing ')'
9751 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9752 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9753
9754 cur_arg = 1;
9755
9756 if (!*args[cur_arg] ||
9757 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9758 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9759 file, linenum, args[0]);
9760 goto out_err;
9761 }
9762
9763 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9764 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9765 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9766 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9767 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9768 free(proxy->conf.lfs_file);
9769 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9770 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9771
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9772 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9773 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9774 /* http-response del-acl(<reference (acl name)>) <key pattern> */
9775 rule->action = HTTP_RES_ACT_DEL_ACL;
9776 /*
9777 * '+ 8' for 'del-acl('
9778 * '- 9' for 'del-acl(' + trailing ')'
9779 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9780 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9781
9782 cur_arg = 1;
9783
9784 if (!*args[cur_arg] ||
9785 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9786 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9787 file, linenum, args[0]);
9788 goto out_err;
9789 }
9790
9791 LIST_INIT(&rule->arg.map.key);
9792 proxy->conf.args.ctx = ARGC_HRS;
9793 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9794 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9795 file, linenum);
9796 free(proxy->conf.lfs_file);
9797 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9798 proxy->conf.lfs_line = proxy->conf.args.line;
9799 cur_arg += 1;
9800 } else if (strncmp(args[0], "del-map", 7) == 0) {
9801 /* http-response del-map(<reference (map name)>) <key pattern> */
9802 rule->action = HTTP_RES_ACT_DEL_MAP;
9803 /*
9804 * '+ 8' for 'del-map('
9805 * '- 9' for 'del-map(' + trailing ')'
9806 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9807 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9808
9809 cur_arg = 1;
9810
9811 if (!*args[cur_arg] ||
9812 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9813 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9814 file, linenum, args[0]);
9815 goto out_err;
9816 }
9817
9818 LIST_INIT(&rule->arg.map.key);
9819 proxy->conf.args.ctx = ARGC_HRS;
9820 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9821 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9822 file, linenum);
9823 free(proxy->conf.lfs_file);
9824 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9825 proxy->conf.lfs_line = proxy->conf.args.line;
9826 cur_arg += 1;
9827 } else if (strncmp(args[0], "set-map", 7) == 0) {
9828 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
9829 rule->action = HTTP_RES_ACT_SET_MAP;
9830 /*
9831 * '+ 8' for 'set-map('
9832 * '- 9' for 'set-map(' + trailing ')'
9833 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9834 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9835
9836 cur_arg = 1;
9837
9838 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9839 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9840 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9841 file, linenum, args[0]);
9842 goto out_err;
9843 }
9844
9845 LIST_INIT(&rule->arg.map.key);
9846 LIST_INIT(&rule->arg.map.value);
9847
9848 proxy->conf.args.ctx = ARGC_HRS;
9849
9850 /* key pattern */
9851 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9852 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9853 file, linenum);
9854
9855 /* value pattern */
9856 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9857 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9858 file, linenum);
9859
9860 free(proxy->conf.lfs_file);
9861 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9862 proxy->conf.lfs_line = proxy->conf.args.line;
9863
9864 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9865 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9866 char *errmsg = NULL;
9867 cur_arg = 1;
9868 /* try in the module list */
9869 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9870 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9871 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9872 free(errmsg);
9873 goto out_err;
9874 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9875 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9876 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]9877 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
9878 goto out_err;
9879 }
9880
9881 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9882 struct acl_cond *cond;
9883 char *errmsg = NULL;
9884
9885 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9886 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9887 file, linenum, args[0], errmsg);
9888 free(errmsg);
9889 goto out_err;
9890 }
9891 rule->cond = cond;
9892 }
9893 else if (*args[cur_arg]) {
9894 Alert("parsing [%s:%d]: 'http-response %s' expects"
9895 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9896 file, linenum, args[0], args[cur_arg]);
9897 goto out_err;
9898 }
9899
9900 return rule;
9901 out_err:
9902 free(rule);
9903 return NULL;
9904}
9905
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9906/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9907 * with <err> filled with the error message. If <use_fmt> is not null, builds a
9908 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9909 */
9910struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9911 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9912{
9913 struct redirect_rule *rule;
9914 int cur_arg;
9915 int type = REDIRECT_TYPE_NONE;
9916 int code = 302;
9917 const char *destination = NULL;
9918 const char *cookie = NULL;
9919 int cookie_set = 0;
9920 unsigned int flags = REDIRECT_FLAG_NONE;
9921 struct acl_cond *cond = NULL;
9922
9923 cur_arg = 0;
9924 while (*(args[cur_arg])) {
9925 if (strcmp(args[cur_arg], "location") == 0) {
9926 if (!*args[cur_arg + 1])
9927 goto missing_arg;
9928
9929 type = REDIRECT_TYPE_LOCATION;
9930 cur_arg++;
9931 destination = args[cur_arg];
9932 }
9933 else if (strcmp(args[cur_arg], "prefix") == 0) {
9934 if (!*args[cur_arg + 1])
9935 goto missing_arg;
9936
9937 type = REDIRECT_TYPE_PREFIX;
9938 cur_arg++;
9939 destination = args[cur_arg];
9940 }
9941 else if (strcmp(args[cur_arg], "scheme") == 0) {
9942 if (!*args[cur_arg + 1])
9943 goto missing_arg;
9944
9945 type = REDIRECT_TYPE_SCHEME;
9946 cur_arg++;
9947 destination = args[cur_arg];
9948 }
9949 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9950 if (!*args[cur_arg + 1])
9951 goto missing_arg;
9952
9953 cur_arg++;
9954 cookie = args[cur_arg];
9955 cookie_set = 1;
9956 }
9957 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9958 if (!*args[cur_arg + 1])
9959 goto missing_arg;
9960
9961 cur_arg++;
9962 cookie = args[cur_arg];
9963 cookie_set = 0;
9964 }
9965 else if (strcmp(args[cur_arg], "code") == 0) {
9966 if (!*args[cur_arg + 1])
9967 goto missing_arg;
9968
9969 cur_arg++;
9970 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9971 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9972 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9973 "'%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]9974 args[cur_arg - 1], args[cur_arg]);
9975 return NULL;
9976 }
9977 }
9978 else if (!strcmp(args[cur_arg],"drop-query")) {
9979 flags |= REDIRECT_FLAG_DROP_QS;
9980 }
9981 else if (!strcmp(args[cur_arg],"append-slash")) {
9982 flags |= REDIRECT_FLAG_APPEND_SLASH;
9983 }
9984 else if (strcmp(args[cur_arg], "if") == 0 ||
9985 strcmp(args[cur_arg], "unless") == 0) {
9986 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9987 if (!cond) {
9988 memprintf(errmsg, "error in condition: %s", *errmsg);
9989 return NULL;
9990 }
9991 break;
9992 }
9993 else {
9994 memprintf(errmsg,
9995 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9996 args[cur_arg]);
9997 return NULL;
9998 }
9999 cur_arg++;
10000 }
10001
10002 if (type == REDIRECT_TYPE_NONE) {
10003 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
10004 return NULL;
10005 }
10006
10007 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
10008 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]10009 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10010
10011 if (!use_fmt) {
10012 /* old-style static redirect rule */
10013 rule->rdr_str = strdup(destination);
10014 rule->rdr_len = strlen(destination);
10015 }
10016 else {
10017 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10018
10019 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
10020 * if prefix == "/", we don't want to add anything, otherwise it
10021 * makes it hard for the user to configure a self-redirection.
10022 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]10023 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10024 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]10025 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]10026 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
10027 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]10028 free(curproxy->conf.lfs_file);
10029 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
10030 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]10031 }
10032 }
10033
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]10034 if (cookie) {
10035 /* depending on cookie_set, either we want to set the cookie, or to clear it.
10036 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
10037 */
10038 rule->cookie_len = strlen(cookie);
10039 if (cookie_set) {
10040 rule->cookie_str = malloc(rule->cookie_len + 10);
10041 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10042 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
10043 rule->cookie_len += 9;
10044 } else {
10045 rule->cookie_str = malloc(rule->cookie_len + 21);
10046 memcpy(rule->cookie_str, cookie, rule->cookie_len);
10047 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
10048 rule->cookie_len += 20;
10049 }
10050 }
10051 rule->type = type;
10052 rule->code = code;
10053 rule->flags = flags;
10054 LIST_INIT(&rule->list);
10055 return rule;
10056
10057 missing_arg:
10058 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
10059 return NULL;
10060}
10061
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10062/************************************************************************/
10063/* The code below is dedicated to ACL parsing and matching */
10064/************************************************************************/
10065
10066
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10067/* This function ensures that the prerequisites for an L7 fetch are ready,
10068 * which means that a request or response is ready. If some data is missing,
10069 * 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]10070 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
10071 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10072 *
10073 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10074 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
10075 * decide whether or not an HTTP message is present ;
10076 * 0 if the requested data cannot be fetched or if it is certain that
10077 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10078 * 1 if an HTTP message is ready
10079 */
10080static int
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10081smp_prefetch_http(struct proxy *px, struct stream *s, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10082 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10083{
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10084 struct http_txn *txn;
10085 struct http_msg *msg;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10086
Willy Tarreaueee5b512015-04-03 23:46:31 +0200[diff] [blame]10087 /* Note: this function may only be used from places where
10088 * http_init_txn() has already been done, and implies that <s>,
10089 * <txn>, and <hdr_idx.v> are properly set. An extra check protects
10090 * against an eventual mistake in the fetch capability matrix.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10091 */
10092
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10093 if (!s)
10094 return 0;
10095 txn = s->txn;
10096
10097 if (!txn)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10098 return 0;
Willy Tarreau192252e2015-04-04 01:47:55 +0200[diff] [blame]10099 msg = &txn->req;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10100
10101 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10102 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10103
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10104 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10105 /* If the buffer does not leave enough free space at the end,
10106 * we must first realign it.
10107 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10108 if (s->req.buf->p > s->req.buf->data &&
10109 s->req.buf->i + s->req.buf->p > s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)
10110 buffer_slow_realign(s->req.buf);
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10111
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10112 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]10113 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10114 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10115
10116 /* Try to decode HTTP request */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10117 if (likely(msg->next < s->req.buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10118 http_msg_analyzer(msg, &txn->hdr_idx);
10119
10120 /* Still no valid request ? */
10121 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]10122 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10123 buffer_full(s->req.buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10124 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10125 }
10126 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10127 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10128 return 0;
10129 }
10130
10131 /* OK we just got a valid HTTP request. We have some minor
10132 * preparation to perform so that further checks can rely
10133 * on HTTP tests.
10134 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10135
10136 /* If the request was parsed but was too large, we must absolutely
10137 * return an error so that it is not processed. At the moment this
10138 * cannot happen, but if the parsers are to change in the future,
10139 * we want this check to be maintained.
10140 */
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]10141 if (unlikely(s->req.buf->i + s->req.buf->p >
10142 s->req.buf->data + s->req.buf->size - global.tune.maxrewrite)) {
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10143 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10144 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]10145 return 1;
10146 }
10147
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10148 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10149 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
Willy Tarreaue7dff022015-04-03 01:14:29 +0200[diff] [blame]10150 s->flags |= SF_REDIRECTABLE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10151
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10152 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
10153 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10154 }
10155
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10156 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10157 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10158 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10159
10160 /* otherwise everything's ready for the request */
10161 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10162 else {
10163 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10164 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
10165 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10166 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10167 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10168 }
10169
10170 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]10171 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]10172 return 1;
10173}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10174
Willy Tarreau6c616e02014-06-25 16:56:41 +0200[diff] [blame]10175/* Note: these functinos *do* modify the sample. Even in case of success, at
10176 * least the type and uint value are modified.
10177 */
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10178#define CHECK_HTTP_MESSAGE_FIRST() \
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10179 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]10180
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10181#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10182 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]10183
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10184
10185/* 1. Check on METHOD
10186 * We use the pre-parsed method if it is known, and store its number as an
10187 * integer. If it is unknown, we use the pointer and the length.
10188 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10189static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10190{
10191 int len, meth;
10192
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]10193 len = strlen(text);
10194 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10195
10196 pattern->val.i = meth;
10197 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]10198 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10199 pattern->len = len;
10200 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10201 else {
10202 pattern->ptr.str = NULL;
10203 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10204 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10205 return 1;
10206}
10207
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10208/* This function fetches the method of current HTTP request and stores
10209 * it in the global pattern struct as a chunk. There are two possibilities :
10210 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
10211 * in <len> and <ptr> is NULL ;
10212 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
10213 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10214 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10215 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10216static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10217smp_fetch_meth(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10218{
10219 int meth;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10220 struct http_txn *txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10221
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10222 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10223
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10224 meth = txn->meth;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10225 smp->type = SMP_T_METH;
10226 smp->data.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10227 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10228 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
10229 /* ensure the indexes are not affected */
10230 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10231 smp->flags |= SMP_F_CONST;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]10232 smp->data.meth.str.len = txn->req.sl.rq.m_l;
10233 smp->data.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10234 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10235 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10236 return 1;
10237}
10238
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]10239/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10240static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10241{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10242 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10243 struct pattern_list *lst;
10244 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10245
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10246 list_for_each_entry(lst, &expr->patterns, list) {
10247 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10248
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10249 /* well-known method */
10250 if (pattern->val.i != HTTP_METH_OTHER) {
10251 if (smp->data.meth.meth == pattern->val.i)
10252 return pattern;
10253 else
10254 continue;
10255 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]10256
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]10257 /* Other method, we must compare the strings */
10258 if (pattern->len != smp->data.meth.str.len)
10259 continue;
10260
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]10261 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Willy Tarreau4de2a942014-08-28 20:42:57 +0200[diff] [blame]10262 if ((icase && strncasecmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0) ||
10263 (!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]10264 return pattern;
10265 }
10266 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10267}
10268
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10269static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10270smp_fetch_rqver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10271{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10272 struct http_txn *txn = smp->strm->txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10273 char *ptr;
10274 int len;
10275
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10276 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10277
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10278 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10279 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10280
10281 while ((len-- > 0) && (*ptr++ != '/'));
10282 if (len <= 0)
10283 return 0;
10284
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10285 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10286 smp->data.str.str = ptr;
10287 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10288
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10289 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10290 return 1;
10291}
10292
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10293static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10294smp_fetch_stver(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10295{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10296 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10297 char *ptr;
10298 int len;
10299
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10300 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10301
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10302 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10303 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10304 return 0;
10305
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10306 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10307 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10308
10309 while ((len-- > 0) && (*ptr++ != '/'));
10310 if (len <= 0)
10311 return 0;
10312
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10313 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10314 smp->data.str.str = ptr;
10315 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10316
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10317 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10318 return 1;
10319}
10320
10321/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10322static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10323smp_fetch_stcode(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10324{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10325 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10326 char *ptr;
10327 int len;
10328
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10329 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10330
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10331 txn = smp->strm->txn;
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10332 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10333 return 0;
10334
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10335 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10336 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10337
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10338 smp->type = SMP_T_UINT;
10339 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10340 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10341 return 1;
10342}
10343
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10344/* returns the longest available part of the body. This requires that the body
10345 * has been waited for using http-buffer-request.
10346 */
10347static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10348smp_fetch_body(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10349{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10350 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10351 struct http_msg *msg;
10352 unsigned long len;
10353 unsigned long block1;
10354 char *body;
10355 struct chunk *temp;
10356
10357 CHECK_HTTP_MESSAGE_FIRST();
10358
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10359 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10360 msg = &txn->req;
10361 else
10362 msg = &txn->rsp;
10363
10364 len = http_body_bytes(msg);
10365 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
10366
10367 block1 = len;
10368 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
10369 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
10370
10371 if (block1 == len) {
10372 /* buffer is not wrapped (or empty) */
10373 smp->type = SMP_T_BIN;
10374 smp->data.str.str = body;
10375 smp->data.str.len = len;
10376 smp->flags = SMP_F_VOL_TEST | SMP_F_CONST;
10377 }
10378 else {
10379 /* buffer is wrapped, we need to defragment it */
10380 temp = get_trash_chunk();
10381 memcpy(temp->str, body, block1);
10382 memcpy(temp->str + block1, msg->chn->buf->data, len - block1);
10383 smp->type = SMP_T_BIN;
10384 smp->data.str.str = temp->str;
10385 smp->data.str.len = len;
10386 smp->flags = SMP_F_VOL_TEST;
10387 }
10388 return 1;
10389}
10390
10391
10392/* returns the available length of the body. This requires that the body
10393 * has been waited for using http-buffer-request.
10394 */
10395static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10396smp_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]10397{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10398 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10399 struct http_msg *msg;
10400
10401 CHECK_HTTP_MESSAGE_FIRST();
10402
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10403 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10404 msg = &txn->req;
10405 else
10406 msg = &txn->rsp;
10407
10408 smp->type = SMP_T_UINT;
10409 smp->data.uint = http_body_bytes(msg);
10410
10411 smp->flags = SMP_F_VOL_TEST;
10412 return 1;
10413}
10414
10415
10416/* returns the advertised length of the body, or the advertised size of the
10417 * chunks available in the buffer. This requires that the body has been waited
10418 * for using http-buffer-request.
10419 */
10420static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10421smp_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]10422{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10423 struct http_txn *txn = smp->strm->txn;
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10424 struct http_msg *msg;
10425
10426 CHECK_HTTP_MESSAGE_FIRST();
10427
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10428 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]10429 msg = &txn->req;
10430 else
10431 msg = &txn->rsp;
10432
10433 smp->type = SMP_T_UINT;
10434 smp->data.uint = msg->body_len;
10435
10436 smp->flags = SMP_F_VOL_TEST;
10437 return 1;
10438}
10439
10440
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10441/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10442static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10443smp_fetch_url(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10444{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10445 struct http_txn *txn;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10446
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10447 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10448
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10449 txn = smp->strm->txn;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10450 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10451 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10452 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10453 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10454 return 1;
10455}
10456
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10457static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10458smp_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]10459{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10460 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10461 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10462
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10463 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10464
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10465 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10466 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]10467 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10468 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10469
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10470 smp->type = SMP_T_IPV4;
10471 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10472 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10473 return 1;
10474}
10475
10476static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10477smp_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]10478{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10479 struct http_txn *txn;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10480 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10481
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10482 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10483
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10484 txn = smp->strm->txn;
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10485 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]10486 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10487 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10488
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10489 smp->type = SMP_T_UINT;
10490 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10491 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10492 return 1;
10493}
10494
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10495/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10496 * Accepts an optional argument of type string containing the header field name,
10497 * and an optional argument of type signed or unsigned integer to request an
10498 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10499 * headers are considered from the first one. It does not stop on commas and
10500 * returns full lines instead (useful for User-Agent or Date for example).
10501 */
10502static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10503smp_fetch_fhdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10504{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10505 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10506 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10507 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10508 int occ = 0;
10509 const char *name_str = NULL;
10510 int name_len = 0;
10511
10512 if (!ctx) {
10513 /* first call */
10514 ctx = &static_hdr_ctx;
10515 ctx->idx = 0;
10516 smp->ctx.a[0] = ctx;
10517 }
10518
10519 if (args) {
10520 if (args[0].type != ARGT_STR)
10521 return 0;
10522 name_str = args[0].data.str.str;
10523 name_len = args[0].data.str.len;
10524
10525 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10526 occ = args[1].data.uint;
10527 }
10528
10529 CHECK_HTTP_MESSAGE_FIRST();
10530
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10531 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10532 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]10533
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10534 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10535 /* search for header from the beginning */
10536 ctx->idx = 0;
10537
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10538 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10539 /* no explicit occurrence and single fetch => last header by default */
10540 occ = -1;
10541
10542 if (!occ)
10543 /* prepare to report multiple occurrences for ACL fetches */
10544 smp->flags |= SMP_F_NOT_LAST;
10545
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10546 smp->type = SMP_T_STR;
10547 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10548 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
10549 return 1;
10550
10551 smp->flags &= ~SMP_F_NOT_LAST;
10552 return 0;
10553}
10554
10555/* 6. Check on HTTP header count. The number of occurrences is returned.
10556 * Accepts exactly 1 argument of type string. It does not stop on commas and
10557 * returns full lines instead (useful for User-Agent or Date for example).
10558 */
10559static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10560smp_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]10561{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10562 struct hdr_idx *idx;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10563 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10564 const struct http_msg *msg;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10565 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10566 const char *name = NULL;
10567 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10568
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10569 if (args && args->type == ARGT_STR) {
10570 name = args->data.str.str;
10571 len = args->data.str.len;
10572 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10573
10574 CHECK_HTTP_MESSAGE_FIRST();
10575
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10576 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10577 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]10578
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10579 ctx.idx = 0;
10580 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10581 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10582 cnt++;
10583
10584 smp->type = SMP_T_UINT;
10585 smp->data.uint = cnt;
10586 smp->flags = SMP_F_VOL_HDR;
10587 return 1;
10588}
10589
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10590static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10591smp_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]10592{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10593 struct hdr_idx *idx;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10594 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10595 const struct http_msg *msg;
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10596 struct chunk *temp;
10597 char del = ',';
10598
10599 if (args && args->type == ARGT_STR)
10600 del = *args[0].data.str.str;
10601
10602 CHECK_HTTP_MESSAGE_FIRST();
10603
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10604 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10605 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]10606
Willy Tarreaueb27ec72015-02-20 13:55:29 +0100[diff] [blame]10607 temp = get_trash_chunk();
10608
10609 ctx.idx = 0;
10610 while (http_find_next_header(msg->chn->buf->p, idx, &ctx)) {
10611 if (temp->len)
10612 temp->str[temp->len++] = del;
10613 memcpy(temp->str + temp->len, ctx.line, ctx.del);
10614 temp->len += ctx.del;
10615 }
10616
10617 smp->type = SMP_T_STR;
10618 smp->data.str.str = temp->str;
10619 smp->data.str.len = temp->len;
10620 smp->flags = SMP_F_VOL_HDR;
10621 return 1;
10622}
10623
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10624/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10625 * Accepts an optional argument of type string containing the header field name,
10626 * and an optional argument of type signed or unsigned integer to request an
10627 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10628 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10629 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10630static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10631smp_fetch_hdr(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10632{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10633 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10634 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10635 const struct http_msg *msg;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10636 int occ = 0;
10637 const char *name_str = NULL;
10638 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10639
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10640 if (!ctx) {
10641 /* first call */
10642 ctx = &static_hdr_ctx;
10643 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10644 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10645 }
10646
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10647 if (args) {
10648 if (args[0].type != ARGT_STR)
10649 return 0;
10650 name_str = args[0].data.str.str;
10651 name_len = args[0].data.str.len;
10652
10653 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10654 occ = args[1].data.uint;
10655 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10656
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10657 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10658
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10659 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10660 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]10661
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10662 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10663 /* search for header from the beginning */
10664 ctx->idx = 0;
10665
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10666 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10667 /* no explicit occurrence and single fetch => last header by default */
10668 occ = -1;
10669
10670 if (!occ)
10671 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10672 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10673
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10674 smp->type = SMP_T_STR;
10675 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10676 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]10677 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10678
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10679 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10680 return 0;
10681}
10682
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10683/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10684 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10685 */
10686static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10687smp_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]10688{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10689 struct hdr_idx *idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10690 struct hdr_ctx ctx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10691 const struct http_msg *msg;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10692 int cnt;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10693 const char *name = NULL;
10694 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10695
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10696 if (args && args->type == ARGT_STR) {
10697 name = args->data.str.str;
10698 len = args->data.str.len;
10699 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10700
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10701 CHECK_HTTP_MESSAGE_FIRST();
10702
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10703 idx = &smp->strm->txn->hdr_idx;
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10704 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]10705
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10706 ctx.idx = 0;
10707 cnt = 0;
Willy Tarreau601a4d12015-04-01 19:16:09 +0200[diff] [blame]10708 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10709 cnt++;
10710
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10711 smp->type = SMP_T_UINT;
10712 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10713 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10714 return 1;
10715}
10716
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10717/* Fetch an HTTP header's integer value. The integer value is returned. It
10718 * takes a mandatory argument of type string and an optional one of type int
10719 * to designate a specific occurrence. It returns an unsigned integer, which
10720 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10721 */
10722static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10723smp_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]10724{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10725 int ret = smp_fetch_hdr(args, smp, kw, private);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10726
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10727 if (ret > 0) {
10728 smp->type = SMP_T_UINT;
10729 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10730 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10731
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10732 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10733}
10734
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10735/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10736 * and an optional one of type int to designate a specific occurrence.
10737 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10738 */
10739static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10740smp_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]10741{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10742 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10743
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10744 while ((ret = smp_fetch_hdr(args, smp, kw, private)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10745 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
10746 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10747 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10748 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10749 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10750 if (smp->data.str.len < temp->size - 1) {
10751 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
10752 temp->str[smp->data.str.len] = '\0';
10753 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
10754 smp->type = SMP_T_IPV6;
10755 break;
10756 }
10757 }
10758 }
10759
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10760 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10761 if (!(smp->flags & SMP_F_NOT_LAST))
10762 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10763 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10764 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10765}
10766
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10767/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10768 * the first '/' after the possible hostname, and ends before the possible '?'.
10769 */
10770static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10771smp_fetch_path(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10772{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10773 struct http_txn *txn;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10774 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10775
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10776 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10777
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10778 txn = smp->strm->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10779 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]10780 ptr = http_get_path(txn);
10781 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10782 return 0;
10783
10784 /* OK, we got the '/' ! */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10785 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10786 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10787
10788 while (ptr < end && *ptr != '?')
10789 ptr++;
10790
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10791 smp->data.str.len = ptr - smp->data.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10792 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10793 return 1;
10794}
10795
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10796/* This produces a concatenation of the first occurrence of the Host header
10797 * followed by the path component if it begins with a slash ('/'). This means
10798 * that '*' will not be added, resulting in exactly the first Host entry.
10799 * If no Host header is found, then the path is returned as-is. The returned
10800 * 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]10801 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10802 */
10803static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10804smp_fetch_base(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10805{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10806 struct http_txn *txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10807 char *ptr, *end, *beg;
10808 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10809 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10810
10811 CHECK_HTTP_MESSAGE_FIRST();
10812
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10813 txn = smp->strm->txn;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10814 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10815 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]10816 return smp_fetch_path(args, smp, kw, private);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10817
10818 /* 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]10819 temp = get_trash_chunk();
10820 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10821 smp->type = SMP_T_STR;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10822 smp->data.str.str = temp->str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10823 smp->data.str.len = ctx.vlen;
10824
10825 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10826 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]10827 beg = http_get_path(txn);
10828 if (!beg)
10829 beg = end;
10830
10831 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10832
10833 if (beg < ptr && *beg == '/') {
10834 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
10835 smp->data.str.len += ptr - beg;
10836 }
10837
10838 smp->flags = SMP_F_VOL_1ST;
10839 return 1;
10840}
10841
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10842/* This produces a 32-bit hash of the concatenation of the first occurrence of
10843 * the Host header followed by the path component if it begins with a slash ('/').
10844 * This means that '*' will not be added, resulting in exactly the first Host
10845 * 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]10846 * is hashed using the path hash followed by a full avalanche hash and provides a
10847 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10848 * high-traffic sites without having to store whole paths.
10849 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10850int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10851smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10852{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10853 struct http_txn *txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10854 struct hdr_ctx ctx;
10855 unsigned int hash = 0;
10856 char *ptr, *beg, *end;
10857 int len;
10858
10859 CHECK_HTTP_MESSAGE_FIRST();
10860
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10861 txn = smp->strm->txn;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10862 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10863 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]10864 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10865 ptr = ctx.line + ctx.val;
10866 len = ctx.vlen;
10867 while (len--)
10868 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10869 }
10870
10871 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10872 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]10873 beg = http_get_path(txn);
10874 if (!beg)
10875 beg = end;
10876
10877 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10878
10879 if (beg < ptr && *beg == '/') {
10880 while (beg < ptr)
10881 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10882 }
10883 hash = full_hash(hash);
10884
10885 smp->type = SMP_T_UINT;
10886 smp->data.uint = hash;
10887 smp->flags = SMP_F_VOL_1ST;
10888 return 1;
10889}
10890
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10891/* 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]10892 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10893 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10894 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10895 * that in environments where IPv6 is insignificant, truncating the output to
10896 * 8 bytes would still work.
10897 */
10898static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10899smp_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]10900{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10901 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10902 struct connection *cli_conn = objt_conn(smp->sess->origin);
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10903
10904 if (!cli_conn)
10905 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10906
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10907 if (!smp_fetch_base32(args, smp, kw, private))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10908 return 0;
10909
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10910 temp = get_trash_chunk();
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]10911 *(unsigned int *)temp->str = htonl(smp->data.uint);
10912 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10913
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10914 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10915 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10916 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]10917 temp->len += 4;
10918 break;
10919 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10920 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]10921 temp->len += 16;
10922 break;
10923 default:
10924 return 0;
10925 }
10926
10927 smp->data.str = *temp;
10928 smp->type = SMP_T_BIN;
10929 return 1;
10930}
10931
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10932/* Extracts the query string, which comes after the question mark '?'. If no
10933 * question mark is found, nothing is returned. Otherwise it returns a sample
10934 * of type string carrying the whole query string.
10935 */
10936static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10937smp_fetch_query(const struct arg *args, struct sample *smp, const char *kw, void *private)
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10938{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]10939 struct http_txn *txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10940 char *ptr, *end;
10941
10942 CHECK_HTTP_MESSAGE_FIRST();
10943
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10944 txn = smp->strm->txn;
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10945 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
10946 end = ptr + txn->req.sl.rq.u_l;
10947
10948 /* look up the '?' */
10949 do {
10950 if (ptr == end)
10951 return 0;
10952 } while (*ptr++ != '?');
10953
10954 smp->type = SMP_T_STR;
10955 smp->data.str.str = ptr;
10956 smp->data.str.len = end - ptr;
10957 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
10958 return 1;
10959}
10960
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10961static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10962smp_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]10963{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10964 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10965 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10966 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10967
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10968 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10969
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10970 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10971 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10972 return 1;
10973}
10974
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10975/* return a valid test if the current request is the first one on the connection */
10976static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10977smp_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]10978{
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10979 smp->type = SMP_T_BOOL;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10980 smp->data.uint = !(smp->strm->txn->flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10981 return 1;
10982}
10983
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10984/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10985static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]10986smp_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]10987{
10988
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10989 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10990 return 0;
10991
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10992 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10993
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10994 if (!get_http_auth(smp->strm))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10995 return 0;
10996
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10997 smp->type = SMP_T_BOOL;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]10998 smp->data.uint = check_user(args->data.usr, smp->strm->txn->auth.user,
10999 smp->strm->txn->auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]11000 return 1;
11001}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11002
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11003/* Accepts exactly 1 argument of type userlist */
11004static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11005smp_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]11006{
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11007 if (!args || args->type != ARGT_USR)
11008 return 0;
11009
11010 CHECK_HTTP_MESSAGE_FIRST();
11011
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11012 if (!get_http_auth(smp->strm))
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11013 return 0;
11014
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11015 /* if the user does not belong to the userlist or has a wrong password,
11016 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11017 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11018 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11019 if (!check_user(args->data.usr, smp->strm->txn->auth.user,
11020 smp->strm->txn->auth.pass))
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]11021 return 0;
11022
11023 /* pat_match_auth() will need the user list */
11024 smp->ctx.a[0] = args->data.usr;
11025
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11026 smp->type = SMP_T_STR;
11027 smp->flags = SMP_F_CONST;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11028 smp->data.str.str = smp->strm->txn->auth.user;
11029 smp->data.str.len = strlen(smp->strm->txn->auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]11030
11031 return 1;
11032}
11033
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11034/* Try to find the next occurrence of a cookie name in a cookie header value.
11035 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
11036 * the cookie value is returned into *value and *value_l, and the function
11037 * returns a pointer to the next pointer to search from if the value was found.
11038 * Otherwise if the cookie was not found, NULL is returned and neither value
11039 * nor value_l are touched. The input <hdr> string should first point to the
11040 * header's value, and the <hdr_end> pointer must point to the first character
11041 * not part of the value. <list> must be non-zero if value may represent a list
11042 * of values (cookie headers). This makes it faster to abort parsing when no
11043 * list is expected.
11044 */
11045static char *
11046extract_cookie_value(char *hdr, const char *hdr_end,
11047 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]11048 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11049{
11050 char *equal, *att_end, *att_beg, *val_beg, *val_end;
11051 char *next;
11052
11053 /* we search at least a cookie name followed by an equal, and more
11054 * generally something like this :
11055 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
11056 */
11057 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
11058 /* Iterate through all cookies on this line */
11059
11060 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
11061 att_beg++;
11062
11063 /* find att_end : this is the first character after the last non
11064 * space before the equal. It may be equal to hdr_end.
11065 */
11066 equal = att_end = att_beg;
11067
11068 while (equal < hdr_end) {
11069 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
11070 break;
11071 if (http_is_spht[(unsigned char)*equal++])
11072 continue;
11073 att_end = equal;
11074 }
11075
11076 /* here, <equal> points to '=', a delimitor or the end. <att_end>
11077 * is between <att_beg> and <equal>, both may be identical.
11078 */
11079
11080 /* look for end of cookie if there is an equal sign */
11081 if (equal < hdr_end && *equal == '=') {
11082 /* look for the beginning of the value */
11083 val_beg = equal + 1;
11084 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
11085 val_beg++;
11086
11087 /* find the end of the value, respecting quotes */
11088 next = find_cookie_value_end(val_beg, hdr_end);
11089
11090 /* make val_end point to the first white space or delimitor after the value */
11091 val_end = next;
11092 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
11093 val_end--;
11094 } else {
11095 val_beg = val_end = next = equal;
11096 }
11097
11098 /* We have nothing to do with attributes beginning with '$'. However,
11099 * they will automatically be removed if a header before them is removed,
11100 * since they're supposed to be linked together.
11101 */
11102 if (*att_beg == '$')
11103 continue;
11104
11105 /* Ignore cookies with no equal sign */
11106 if (equal == next)
11107 continue;
11108
11109 /* Now we have the cookie name between att_beg and att_end, and
11110 * its value between val_beg and val_end.
11111 */
11112
11113 if (att_end - att_beg == cookie_name_l &&
11114 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
11115 /* let's return this value and indicate where to go on from */
11116 *value = val_beg;
11117 *value_l = val_end - val_beg;
11118 return next + 1;
11119 }
11120
11121 /* Set-Cookie headers only have the name in the first attr=value part */
11122 if (!list)
11123 break;
11124 }
11125
11126 return NULL;
11127}
11128
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11129/* Fetch a captured HTTP request header. The index is the position of
11130 * the "capture" option in the configuration file
11131 */
11132static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11133smp_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]11134{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11135 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11136 int idx;
11137
11138 if (!args || args->type != ARGT_UINT)
11139 return 0;
11140
11141 idx = args->data.uint;
11142
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11143 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]11144 return 0;
11145
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11146 smp->type = SMP_T_STR;
11147 smp->flags |= SMP_F_CONST;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11148 smp->data.str.str = smp->strm->req_cap[idx];
11149 smp->data.str.len = strlen(smp->strm->req_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11150
11151 return 1;
11152}
11153
11154/* Fetch a captured HTTP response header. The index is the position of
11155 * the "capture" option in the configuration file
11156 */
11157static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11158smp_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]11159{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11160 struct proxy *fe = strm_fe(smp->strm);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11161 int idx;
11162
11163 if (!args || args->type != ARGT_UINT)
11164 return 0;
11165
11166 idx = args->data.uint;
11167
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11168 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]11169 return 0;
11170
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11171 smp->type = SMP_T_STR;
11172 smp->flags |= SMP_F_CONST;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11173 smp->data.str.str = smp->strm->res_cap[idx];
11174 smp->data.str.len = strlen(smp->strm->res_cap[idx]);
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11175
11176 return 1;
11177}
11178
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11179/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
11180static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11181smp_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]11182{
11183 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11184 struct http_txn *txn = smp->strm->txn;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11185 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11186
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11187 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11188 return 0;
11189
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11190 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11191
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11192 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11193 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11194
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11195 temp = get_trash_chunk();
11196 temp->str = txn->uri;
11197 temp->len = ptr - txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11198 smp->data.str = *temp;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11199 smp->type = SMP_T_STR;
11200 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11201
11202 return 1;
11203
11204}
11205
11206/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
11207static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11208smp_fetch_capture_req_uri(const struct arg *args, struct sample *smp, const char *kw, void *private)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11209{
11210 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11211 struct http_txn *txn = smp->strm->txn;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11212 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11213
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11214 if (!txn || !txn->uri)
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11215 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11216
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11217 ptr = txn->uri;
11218
11219 while (*ptr != ' ' && *ptr != '\0') /* find first space */
11220 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11221
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11222 if (!*ptr)
11223 return 0;
11224
11225 ptr++; /* skip the space */
11226
11227 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11228 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11229 if (!ptr)
11230 return 0;
11231 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
11232 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11233
11234 smp->data.str = *temp;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]11235 smp->data.str.len = ptr - temp->str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11236 smp->type = SMP_T_STR;
11237 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11238
11239 return 1;
11240}
11241
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11242/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
11243 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11244 */
11245static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11246smp_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]11247{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11248 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11249
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11250 if (!txn || txn->req.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11251 return 0;
11252
11253 if (txn->req.flags & HTTP_MSGF_VER_11)
11254 smp->data.str.str = "HTTP/1.1";
11255 else
11256 smp->data.str.str = "HTTP/1.0";
11257
11258 smp->data.str.len = 8;
11259 smp->type = SMP_T_STR;
11260 smp->flags = SMP_F_CONST;
11261 return 1;
11262
11263}
11264
11265/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
11266 * as a string (either "HTTP/1.0" or "HTTP/1.1").
11267 */
11268static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11269smp_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]11270{
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11271 struct http_txn *txn = smp->strm->txn;
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11272
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11273 if (!txn || txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11274 return 0;
11275
11276 if (txn->rsp.flags & HTTP_MSGF_VER_11)
11277 smp->data.str.str = "HTTP/1.1";
11278 else
11279 smp->data.str.str = "HTTP/1.0";
11280
11281 smp->data.str.len = 8;
11282 smp->type = SMP_T_STR;
11283 smp->flags = SMP_F_CONST;
11284 return 1;
11285
11286}
11287
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]11288
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11289/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11290 * 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]11291 * 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]11292 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11293 * 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]11294 * Accepts exactly 1 argument of type string. If the input options indicate
11295 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]11296 * The returned sample is of type CSTR. Can be used to parse cookies in other
11297 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11298 */
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11299int 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]11300{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11301 struct http_txn *txn;
11302 struct hdr_idx *idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11303 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11304 const struct http_msg *msg;
11305 const char *hdr_name;
11306 int hdr_name_len;
11307 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11308 int occ = 0;
11309 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11310
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11311 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11312 return 0;
11313
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]11314 if (!ctx) {
11315 /* first call */
11316 ctx = &static_hdr_ctx;
11317 ctx->idx = 0;
11318 smp->ctx.a[2] = ctx;
11319 }
11320
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11321 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11322
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11323 txn = smp->strm->txn;
11324 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11325
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11326 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11327 msg = &txn->req;
11328 hdr_name = "Cookie";
11329 hdr_name_len = 6;
11330 } else {
11331 msg = &txn->rsp;
11332 hdr_name = "Set-Cookie";
11333 hdr_name_len = 10;
11334 }
11335
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11336 if (!occ && !(smp->opt & SMP_OPT_ITERATE))
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11337 /* no explicit occurrence and single fetch => last cookie by default */
11338 occ = -1;
11339
11340 /* OK so basically here, either we want only one value and it's the
11341 * last one, or we want to iterate over all of them and we fetch the
11342 * next one.
11343 */
11344
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11345 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11346 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11347 /* search for the header from the beginning, we must first initialize
11348 * the search parameters.
11349 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11350 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11351 ctx->idx = 0;
11352 }
11353
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11354 smp->flags |= SMP_F_VOL_HDR;
11355
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11356 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11357 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
11358 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11359 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
11360 goto out;
11361
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11362 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11363 continue;
11364
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11365 smp->ctx.a[0] = ctx->line + ctx->val;
11366 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11367 }
11368
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11369 smp->type = SMP_T_STR;
11370 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11371 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]11372 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11373 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11374 &smp->data.str.str,
11375 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11376 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11377 found = 1;
11378 if (occ >= 0) {
11379 /* one value was returned into smp->data.str.{str,len} */
11380 smp->flags |= SMP_F_NOT_LAST;
11381 return 1;
11382 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11383 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11384 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11385 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11386 /* all cookie headers and values were scanned. If we're looking for the
11387 * last occurrence, we may return it now.
11388 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11389 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11390 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]11391 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11392}
11393
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11394/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11395 * 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]11396 * multiple cookies may be parsed on the same line. The returned sample is of
11397 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11398 */
11399static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11400smp_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]11401{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11402 struct http_txn *txn;
11403 struct hdr_idx *idx;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11404 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11405 const struct http_msg *msg;
11406 const char *hdr_name;
11407 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11408 int cnt;
11409 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11410 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11411
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11412 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]11413 return 0;
11414
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11415 CHECK_HTTP_MESSAGE_FIRST();
11416
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11417 txn = smp->strm->txn;
11418 idx = &smp->strm->txn->hdr_idx;
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11419
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11420 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]11421 msg = &txn->req;
11422 hdr_name = "Cookie";
11423 hdr_name_len = 6;
11424 } else {
11425 msg = &txn->rsp;
11426 hdr_name = "Set-Cookie";
11427 hdr_name_len = 10;
11428 }
11429
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11430 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]11431 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11432 ctx.idx = 0;
11433 cnt = 0;
11434
11435 while (1) {
11436 /* Note: val_beg == NULL every time we need to fetch a new header */
11437 if (!val_beg) {
11438 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
11439 break;
11440
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11441 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11442 continue;
11443
11444 val_beg = ctx.line + ctx.val;
11445 val_end = val_beg + ctx.vlen;
11446 }
11447
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11448 smp->type = SMP_T_STR;
11449 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11450 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11451 args->data.str.str, args->data.str.len,
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11452 (smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11453 &smp->data.str.str,
11454 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11455 cnt++;
11456 }
11457 }
11458
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]11459 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11460 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11461 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11462 return 1;
11463}
11464
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11465/* Fetch an cookie's integer value. The integer value is returned. It
11466 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11467 */
11468static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11469smp_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]11470{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11471 int ret = smp_fetch_cookie(args, smp, kw, private);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11472
11473 if (ret > 0) {
11474 smp->type = SMP_T_UINT;
11475 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11476 }
11477
11478 return ret;
11479}
11480
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11481/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11482/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11483/************************************************************************/
11484
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11485/*
11486 * Given a path string and its length, find the position of beginning of the
11487 * query string. Returns NULL if no query string is found in the path.
11488 *
11489 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11490 *
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11491 * find_query_string(path, n, '?') points to "yo=mama;ye=daddy" string.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11492 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11493static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11494{
11495 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11496
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11497 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11498 return p ? p + 1 : NULL;
11499}
11500
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11501static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11502{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11503 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11504}
11505
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11506/* after increasing a pointer value, it can exceed the first buffer
11507 * size. This function transform the value of <ptr> according with
11508 * the expected position. <chunks> is an array of the one or two
11509 * avalaible chunks. The first value is the start of the first chunk,
11510 * the second value if the end+1 of the first chunks. The third value
11511 * is NULL or the start of the second chunk and the fourth value is
11512 * the end+1 of the second chunk. The function returns 1 if does a
11513 * wrap, else returns 0.
11514 */
11515static inline int fix_pointer_if_wrap(const char **chunks, const char **ptr)
11516{
11517 if (*ptr < chunks[1])
11518 return 0;
11519 if (!chunks[2])
11520 return 0;
11521 *ptr = chunks[2] + ( *ptr - chunks[1] );
11522 return 1;
11523}
11524
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11525/*
11526 * Given a url parameter, find the starting position of the first occurence,
11527 * or NULL if the parameter is not found.
11528 *
11529 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11530 * the function will return query_string+8.
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11531 *
11532 * Warning:this function returns a pointer that can be point to the first chunk
11533 * or the second chunk. The caller must be check the position before using the
11534 * result.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11535 */
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11536static const char *
11537find_url_param_pos(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11538 const char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11539 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11540{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11541 const char *pos, *last, *equal;
11542 const char **bufs = chunks;
11543 int l1, l2;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11544
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11545
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11546 pos = bufs[0];
11547 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11548 while (pos <= last) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11549 /* Check the equal. */
11550 equal = pos + url_param_name_l;
11551 if (fix_pointer_if_wrap(chunks, &equal)) {
11552 if (equal >= chunks[3])
11553 return NULL;
11554 } else {
11555 if (equal >= chunks[1])
11556 return NULL;
11557 }
11558 if (*equal == '=') {
11559 if (pos + url_param_name_l > last) {
11560 /* process wrap case, we detect a wrap. In this case, the
11561 * comparison is performed in two parts.
11562 */
11563
11564 /* This is the end, we dont have any other chunk. */
11565 if (bufs != chunks || !bufs[2])
11566 return NULL;
11567
11568 /* Compute the length of each part of the comparison. */
11569 l1 = last - pos;
11570 l2 = url_param_name_l - l1;
11571
11572 /* The second buffer is too short to contain the compared string. */
11573 if (bufs[2] + l2 > bufs[3])
11574 return NULL;
11575
11576 if (memcmp(pos, url_param_name, l1) == 0 &&
11577 memcmp(bufs[2], url_param_name+l1, l2) == 0)
11578 return pos;
11579
11580 /* Perform wrapping and jump the string who fail the comparison. */
11581 bufs += 2;
11582 pos = bufs[0] + l2;
11583 last = bufs[1];
11584
11585 } else {
11586 /* process a simple comparison. */
11587 if (memcmp(pos, url_param_name, url_param_name_l) == 0) {
11588 return pos; }
11589 pos += url_param_name_l + 1;
11590 if (fix_pointer_if_wrap(chunks, &pos))
11591 last = bufs[2];
11592 }
11593 }
11594
11595 while (1) {
11596 /* Look for the next delimiter. */
11597 while (pos <= last && !is_param_delimiter(*pos, delim))
11598 pos++;
11599 if (pos < last)
11600 break;
11601 /* process buffer wrapping. */
11602 if (bufs != chunks || !bufs[2])
11603 return NULL;
11604 bufs += 2;
11605 pos = bufs[0];
11606 last = bufs[1];
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11607 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11608 pos++;
11609 }
11610 return NULL;
11611}
11612
11613/*
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11614 * Given a url parameter name and a query string, returns its value and size
11615 * into *value and *value_l respectively, and returns non-zero. An empty
11616 * url_param_name matches the first available parameter. If the parameter is
11617 * not found, zero is returned and value/value_l are not touched.
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11618 */
11619static int
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11620find_next_url_param(const char **chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11621 const char* url_param_name, size_t url_param_name_l,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11622 const char **vstart, const char **vend, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11623{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11624 const char *arg_start, *qs_end;
11625 const char *value_start, *value_end;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11626
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11627 arg_start = chunks[0];
11628 qs_end = chunks[1];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11629 if (url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11630 /* Looks for an argument name. */
11631 arg_start = find_url_param_pos(chunks,
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11632 url_param_name, url_param_name_l,
11633 delim);
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11634 /* Check for wrapping. */
11635 if (arg_start > qs_end)
11636 qs_end = chunks[3];
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11637 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11638 if (!arg_start)
11639 return 0;
11640
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11641 if (!url_param_name_l) {
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11642 while (1) {
11643 /* looks for the first argument. */
11644 value_start = memchr(arg_start, '=', qs_end - arg_start);
11645 if (!value_start) {
11646
11647 /* Check for wrapping. */
11648 if (arg_start >= chunks[0] &&
11649 arg_start <= chunks[1] &&
11650 chunks[2]) {
11651 arg_start = chunks[2];
11652 qs_end = chunks[3];
11653 continue;
11654 }
11655 return 0;
11656 }
11657 break;
11658 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11659 value_start++;
11660 }
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11661 else {
11662 /* Jump the argument length. */
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11663 value_start = arg_start + url_param_name_l + 1;
11664
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11665 /* Check for pointer wrapping. */
11666 if (fix_pointer_if_wrap(chunks, &value_start)) {
11667 /* Update the end pointer. */
11668 qs_end = chunks[3];
11669
11670 /* Check for overflow. */
11671 if (value_start > qs_end)
11672 return 0;
11673 }
11674 }
11675
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11676 value_end = value_start;
11677
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11678 while (1) {
11679 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
11680 value_end++;
11681 if (value_end < qs_end)
11682 break;
11683 /* process buffer wrapping. */
11684 if (value_end >= chunks[0] &&
11685 value_end <= chunks[1] &&
11686 chunks[2]) {
11687 value_end = chunks[2];
11688 qs_end = chunks[3];
11689 continue;
11690 }
11691 break;
11692 }
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11693
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11694 *vstart = value_start;
11695 *vend = value_end;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]11696 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11697}
11698
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11699/* This scans a URL-encoded query string. It takes an optionally wrapping
11700 * string whose first contigous chunk has its beginning in ctx->a[0] and end
11701 * in ctx->a[1], and the optional second part in (ctx->a[2]..ctx->a[3]). The
11702 * pointers are updated for next iteration before leaving.
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11703 */
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11704static int
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11705smp_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]11706{
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11707 const char *vstart, *vend;
11708 struct chunk *temp;
11709 const char **chunks = (const char **)smp->ctx.a;
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11710
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11711 if (!find_next_url_param(chunks,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11712 name, name_len,
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11713 &vstart, &vend,
Thierry FOURNIER0948d412015-05-20 15:22:37 +0200[diff] [blame]11714 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11715 return 0;
11716
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11717 /* Create sample. If the value is contiguous, return the pointer as CONST,
11718 * if the value is wrapped, copy-it in a buffer.
11719 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11720 smp->type = SMP_T_STR;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11721 if (chunks[2] &&
11722 vstart >= chunks[0] && vstart <= chunks[1] &&
11723 vend >= chunks[2] && vend <= chunks[3]) {
11724 /* Wrapped case. */
11725 temp = get_trash_chunk();
11726 memcpy(temp->str, vstart, chunks[1] - vstart);
11727 memcpy(temp->str + ( chunks[1] - vstart ), chunks[2], vend - chunks[2]);
11728 smp->data.str.str = temp->str;
11729 smp->data.str.len = ( chunks[1] - vstart ) + ( vend - chunks[2] );
11730 } else {
11731 /* Contiguous case. */
11732 smp->data.str.str = (char *)vstart;
11733 smp->data.str.len = vend - vstart;
11734 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
11735 }
11736
11737 /* Update context, check wrapping. */
11738 chunks[0] = vend;
11739 if (chunks[2] && vend >= chunks[2] && vend <= chunks[3]) {
11740 chunks[1] = chunks[3];
11741 chunks[2] = NULL;
11742 }
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11743
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11744 if (chunks[0] < chunks[1])
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]11745 smp->flags |= SMP_F_NOT_LAST;
11746
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11747 return 1;
11748}
11749
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11750/* This function iterates over each parameter of the query string. It uses
11751 * 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]11752 * parameter. Since it uses smp_fetch_param(), ctx->a[2..3] are both NULL.
11753 * An optional parameter name is passed in args[0], otherwise any parameter is
11754 * considered. It supports an optional delimiter argument for the beginning of
11755 * the string in args[1], which defaults to "?".
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11756 */
11757static int
11758smp_fetch_url_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11759{
11760 struct http_msg *msg;
11761 char delim = '?';
11762 const char *name;
11763 int name_len;
11764
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame^]11765 if (!args ||
11766 (args[0].type && args[0].type != ARGT_STR) ||
11767 (args[1].type && args[1].type != ARGT_STR))
11768 return 0;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11769
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame^]11770 name = "";
11771 name_len = 0;
11772 if (args->type == ARGT_STR) {
11773 name = args->data.str.str;
11774 name_len = args->data.str.len;
11775 }
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11776
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame^]11777 if (args[1].type)
11778 delim = *args[1].data.str.str;
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11779
Dragan Dosen26f77e52015-05-25 10:02:11 +0200[diff] [blame^]11780 if (!smp->ctx.a[0]) { // first call, find the query string
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11781 CHECK_HTTP_MESSAGE_FIRST();
11782
11783 msg = &smp->strm->txn->req;
11784
11785 smp->ctx.a[0] = find_param_list(msg->chn->buf->p + msg->sl.rq.u,
11786 msg->sl.rq.u_l, delim);
11787 if (!smp->ctx.a[0])
11788 return 0;
11789
11790 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]11791
11792 /* Assume that the context is filled with NULL pointer
11793 * before the first call.
11794 * smp->ctx.a[2] = NULL;
11795 * smp->ctx.a[3] = NULL;
11796 */
Thierry FOURNIER4fdc74c2015-05-19 14:46:23 +0200[diff] [blame]11797 }
11798
11799 return smp_fetch_param(delim, name, name_len, args, smp, kw, private);
11800}
11801
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11802/* This function iterates over each parameter of the body. This requires
11803 * that the body has been waited for using http-buffer-request. It uses
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11804 * ctx->a[0] and ctx->a[1] to store the beginning and end of the first
11805 * contigous part of the body, and optionally ctx->a[2..3] to reference the
11806 * optional second part if the body wraps at the end of the buffer. An optional
11807 * parameter name is passed in args[0], otherwise any parameter is considered.
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11808 */
11809static int
11810smp_fetch_body_param(const struct arg *args, struct sample *smp, const char *kw, void *private)
11811{
11812 struct http_txn *txn = smp->strm->txn;
11813 struct http_msg *msg;
11814 unsigned long len;
11815 unsigned long block1;
11816 char *body;
11817 const char *name;
11818 int name_len;
11819
11820 if (!args || (args[0].type && args[0].type != ARGT_STR))
11821 return 0;
11822
11823 name = "";
11824 name_len = 0;
11825 if (args[0].type == ARGT_STR) {
11826 name = args[0].data.str.str;
11827 name_len = args[0].data.str.len;
11828 }
11829
11830 if (!smp->ctx.a[0]) { // first call, find the query string
11831 CHECK_HTTP_MESSAGE_FIRST();
11832
11833 if ((smp->opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ)
11834 msg = &txn->req;
11835 else
11836 msg = &txn->rsp;
11837
11838 len = http_body_bytes(msg);
11839 body = b_ptr(msg->chn->buf, -http_data_rewind(msg));
11840
11841 block1 = len;
11842 if (block1 > msg->chn->buf->data + msg->chn->buf->size - body)
11843 block1 = msg->chn->buf->data + msg->chn->buf->size - body;
11844
11845 if (block1 == len) {
11846 /* buffer is not wrapped (or empty) */
11847 smp->ctx.a[0] = body;
11848 smp->ctx.a[1] = body + len;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11849
11850 /* Assume that the context is filled with NULL pointer
11851 * before the first call.
11852 * smp->ctx.a[2] = NULL;
11853 * smp->ctx.a[3] = NULL;
11854 */
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11855 }
11856 else {
11857 /* buffer is wrapped, we need to defragment it */
11858 smp->ctx.a[0] = body;
11859 smp->ctx.a[1] = body + block1;
Thierry FOURNIER8be451c2015-05-20 15:28:12 +0200[diff] [blame]11860 smp->ctx.a[2] = msg->chn->buf->data;
11861 smp->ctx.a[3] = msg->chn->buf->data + ( len - block1 );
Thierry FOURNIERe28c4992015-05-19 14:45:09 +0200[diff] [blame]11862 }
11863 }
11864 return smp_fetch_param('&', name, name_len, args, smp, kw, private);
11865}
11866
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11867/* Return the signed integer value for the specified url parameter (see url_param
11868 * above).
11869 */
11870static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11871smp_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]11872{
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11873 int ret = smp_fetch_url_param(args, smp, kw, private);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11874
11875 if (ret > 0) {
11876 smp->type = SMP_T_UINT;
11877 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11878 }
11879
11880 return ret;
11881}
11882
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11883/* This produces a 32-bit hash of the concatenation of the first occurrence of
11884 * the Host header followed by the path component if it begins with a slash ('/').
11885 * This means that '*' will not be added, resulting in exactly the first Host
11886 * entry. If no Host header is found, then the path is used. The resulting value
11887 * is hashed using the url hash followed by a full avalanche hash and provides a
11888 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11889 * high-traffic sites without having to store whole paths.
11890 * this differs from the base32 functions in that it includes the url parameters
11891 * as well as the path
11892 */
11893static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11894smp_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]11895{
Willy Tarreau15e91e12015-04-04 00:52:09 +0200[diff] [blame]11896 struct http_txn *txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11897 struct hdr_ctx ctx;
11898 unsigned int hash = 0;
11899 char *ptr, *beg, *end;
11900 int len;
11901
11902 CHECK_HTTP_MESSAGE_FIRST();
11903
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11904 txn = smp->strm->txn;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11905 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11906 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]11907 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11908 ptr = ctx.line + ctx.val;
11909 len = ctx.vlen;
11910 while (len--)
11911 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11912 }
11913
11914 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11915 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]11916 beg = http_get_path(txn);
11917 if (!beg)
11918 beg = end;
11919
11920 for (ptr = beg; ptr < end ; ptr++);
11921
11922 if (beg < ptr && *beg == '/') {
11923 while (beg < ptr)
11924 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11925 }
11926 hash = full_hash(hash);
11927
11928 smp->type = SMP_T_UINT;
11929 smp->data.uint = hash;
11930 smp->flags = SMP_F_VOL_1ST;
11931 return 1;
11932}
11933
11934/* This concatenates the source address with the 32-bit hash of the Host and
11935 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11936 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11937 * on the source address length. The URL hash is stored before the address so
11938 * that in environments where IPv6 is insignificant, truncating the output to
11939 * 8 bytes would still work.
11940 */
11941static int
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11942smp_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]11943{
11944 struct chunk *temp;
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11945 struct connection *cli_conn = objt_conn(smp->sess->origin);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11946
Thierry FOURNIER0786d052015-05-11 15:42:45 +0200[diff] [blame]11947 if (!smp_fetch_url32(args, smp, kw, private))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11948 return 0;
11949
11950 temp = get_trash_chunk();
11951 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
11952 temp->len += sizeof(smp->data.uint);
11953
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11954 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11955 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11956 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]11957 temp->len += 4;
11958 break;
11959 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11960 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]11961 temp->len += 16;
11962 break;
11963 default:
11964 return 0;
11965 }
11966
11967 smp->data.str = *temp;
11968 smp->type = SMP_T_BIN;
11969 return 1;
11970}
11971
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11972/* This function is used to validate the arguments passed to any "hdr" fetch
11973 * keyword. These keywords support an optional positive or negative occurrence
11974 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11975 * is assumed that the types are already the correct ones. Returns 0 on error,
11976 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11977 * error message in case of error, that the caller is responsible for freeing.
11978 * The initial location must either be freeable or NULL.
11979 */
Thierry FOURNIER49f45af2014-12-08 19:50:43 +0100[diff] [blame]11980int val_hdr(struct arg *arg, char **err_msg)
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11981{
11982 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11983 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11984 return 0;
11985 }
11986 return 1;
11987}
11988
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11989/* takes an UINT value on input supposed to represent the time since EPOCH,
11990 * adds an optional offset found in args[0] and emits a string representing
11991 * the date in RFC-1123/5322 format.
11992 */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]11993static int sample_conv_http_date(const struct arg *args, struct sample *smp, void *private)
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11994{
11995 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
11996 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11997 struct chunk *temp;
11998 struct tm *tm;
11999 time_t curr_date = smp->data.uint;
12000
12001 /* add offset */
12002 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
12003 curr_date += args[0].data.sint;
12004
12005 tm = gmtime(&curr_date);
12006
12007 temp = get_trash_chunk();
12008 temp->len = snprintf(temp->str, temp->size - temp->len,
12009 "%s, %02d %s %04d %02d:%02d:%02d GMT",
12010 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
12011 tm->tm_hour, tm->tm_min, tm->tm_sec);
12012
12013 smp->data.str = *temp;
12014 smp->type = SMP_T_STR;
12015 return 1;
12016}
12017
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12018/* Match language range with language tag. RFC2616 14.4:
12019 *
12020 * A language-range matches a language-tag if it exactly equals
12021 * the tag, or if it exactly equals a prefix of the tag such
12022 * that the first tag character following the prefix is "-".
12023 *
12024 * Return 1 if the strings match, else return 0.
12025 */
12026static inline int language_range_match(const char *range, int range_len,
12027 const char *tag, int tag_len)
12028{
12029 const char *end = range + range_len;
12030 const char *tend = tag + tag_len;
12031 while (range < end) {
12032 if (*range == '-' && tag == tend)
12033 return 1;
12034 if (*range != *tag || tag == tend)
12035 return 0;
12036 range++;
12037 tag++;
12038 }
12039 /* Return true only if the last char of the tag is matched. */
12040 return tag == tend;
12041}
12042
12043/* Arguments: The list of expected value, the number of parts returned and the separator */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12044static int sample_conv_q_prefered(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12045{
12046 const char *al = smp->data.str.str;
12047 const char *end = al + smp->data.str.len;
12048 const char *token;
12049 int toklen;
12050 int qvalue;
12051 const char *str;
12052 const char *w;
12053 int best_q = 0;
12054
12055 /* Set the constant to the sample, because the output of the
12056 * function will be peek in the constant configuration string.
12057 */
12058 smp->flags |= SMP_F_CONST;
12059 smp->data.str.size = 0;
12060 smp->data.str.str = "";
12061 smp->data.str.len = 0;
12062
12063 /* Parse the accept language */
12064 while (1) {
12065
12066 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12067 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12068 al++;
12069 if (al >= end)
12070 break;
12071
12072 /* Start of the fisrt word. */
12073 token = al;
12074
12075 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12076 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12077 al++;
12078 if (al == token)
12079 goto expect_comma;
12080
12081 /* Length of the token. */
12082 toklen = al - token;
12083 qvalue = 1000;
12084
12085 /* Check if the token exists in the list. If the token not exists,
12086 * jump to the next token.
12087 */
12088 str = args[0].data.str.str;
12089 w = str;
12090 while (1) {
12091 if (*str == ';' || *str == '\0') {
12092 if (language_range_match(token, toklen, w, str-w))
12093 goto look_for_q;
12094 if (*str == '\0')
12095 goto expect_comma;
12096 w = str + 1;
12097 }
12098 str++;
12099 }
12100 goto expect_comma;
12101
12102look_for_q:
12103
12104 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12105 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12106 al++;
12107 if (al >= end)
12108 goto process_value;
12109
12110 /* If ',' is found, process the result */
12111 if (*al == ',')
12112 goto process_value;
12113
12114 /* If the character is different from ';', look
12115 * for the end of the header part in best effort.
12116 */
12117 if (*al != ';')
12118 goto expect_comma;
12119
12120 /* Assumes that the char is ';', now expect "q=". */
12121 al++;
12122
12123 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12124 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12125 al++;
12126 if (al >= end)
12127 goto process_value;
12128
12129 /* Expect 'q'. If no 'q', continue in best effort */
12130 if (*al != 'q')
12131 goto process_value;
12132 al++;
12133
12134 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12135 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12136 al++;
12137 if (al >= end)
12138 goto process_value;
12139
12140 /* Expect '='. If no '=', continue in best effort */
12141 if (*al != '=')
12142 goto process_value;
12143 al++;
12144
12145 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]12146 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12147 al++;
12148 if (al >= end)
12149 goto process_value;
12150
12151 /* Parse the q value. */
12152 qvalue = parse_qvalue(al, &al);
12153
12154process_value:
12155
12156 /* If the new q value is the best q value, then store the associated
12157 * language in the response. If qvalue is the biggest value (1000),
12158 * break the process.
12159 */
12160 if (qvalue > best_q) {
12161 smp->data.str.str = (char *)w;
12162 smp->data.str.len = str - w;
12163 if (qvalue >= 1000)
12164 break;
12165 best_q = qvalue;
12166 }
12167
12168expect_comma:
12169
12170 /* Expect comma or end. If the end is detected, quit the loop. */
12171 while (al < end && *al != ',')
12172 al++;
12173 if (al >= end)
12174 break;
12175
12176 /* Comma is found, jump it and restart the analyzer. */
12177 al++;
12178 }
12179
12180 /* Set default value if required. */
12181 if (smp->data.str.len == 0 && args[1].type == ARGT_STR) {
12182 smp->data.str.str = args[1].data.str.str;
12183 smp->data.str.len = args[1].data.str.len;
12184 }
12185
12186 /* Return true only if a matching language was found. */
12187 return smp->data.str.len != 0;
12188}
12189
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12190/* This fetch url-decode any input string. */
Thierry FOURNIER0a9a2b82015-05-11 15:20:49 +0200[diff] [blame]12191static int sample_conv_url_dec(const struct arg *args, struct sample *smp, void *private)
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12192{
12193 /* If the constant flag is set or if not size is avalaible at
12194 * the end of the buffer, copy the string in other buffer
12195 * before decoding.
12196 */
12197 if (smp->flags & SMP_F_CONST || smp->data.str.size <= smp->data.str.len) {
12198 struct chunk *str = get_trash_chunk();
12199 memcpy(str->str, smp->data.str.str, smp->data.str.len);
12200 smp->data.str.str = str->str;
12201 smp->data.str.size = str->size;
12202 smp->flags &= ~SMP_F_CONST;
12203 }
12204
12205 /* Add final \0 required by url_decode(), and convert the input string. */
12206 smp->data.str.str[smp->data.str.len] = '\0';
12207 smp->data.str.len = url_decode(smp->data.str.str);
12208 return 1;
12209}
12210
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12211/* This function executes one of the set-{method,path,query,uri} actions. It
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12212 * takes the string from the variable 'replace' with length 'len', then modifies
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12213 * the relevant part of the request line accordingly. Then it updates various
12214 * pointers to the next elements which were moved, and the total buffer length.
12215 * It finds the action to be performed in p[2], previously filled by function
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12216 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
12217 * error, though this can be revisited when this code is finally exploited.
12218 *
12219 * 'action' can be '0' to replace method, '1' to replace path, '2' to replace
12220 * query string and 3 to replace uri.
12221 *
12222 * In query string case, the mark question '?' must be set at the start of the
12223 * string by the caller, event if the replacement query string is empty.
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12224 */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12225int http_replace_req_line(int action, const char *replace, int len,
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12226 struct proxy *px, struct stream *s)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12227{
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12228 struct http_txn *txn = s->txn;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12229 char *cur_ptr, *cur_end;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12230 int offset = 0;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12231 int delta;
12232
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12233 switch (action) {
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12234 case 0: // method
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12235 cur_ptr = s->req.buf->p;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12236 cur_end = cur_ptr + txn->req.sl.rq.m_l;
12237
12238 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12239 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12240 txn->req.sl.rq.m_l += delta;
12241 txn->req.sl.rq.u += delta;
12242 txn->req.sl.rq.v += delta;
12243 break;
12244
12245 case 1: // path
12246 cur_ptr = http_get_path(txn);
12247 if (!cur_ptr)
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12248 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12249
12250 cur_end = cur_ptr;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12251 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]12252 cur_end++;
12253
12254 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12255 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12256 txn->req.sl.rq.u_l += delta;
12257 txn->req.sl.rq.v += delta;
12258 break;
12259
12260 case 2: // query
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12261 offset = 1;
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12262 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12263 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12264 while (cur_ptr < cur_end && *cur_ptr != '?')
12265 cur_ptr++;
12266
12267 /* skip the question mark or indicate that we must insert it
12268 * (but only if the format string is not empty then).
12269 */
12270 if (cur_ptr < cur_end)
12271 cur_ptr++;
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12272 else if (len > 1)
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12273 offset = 0;
12274
12275 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12276 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12277 txn->req.sl.rq.u_l += delta;
12278 txn->req.sl.rq.v += delta;
12279 break;
12280
12281 case 3: // uri
Willy Tarreau22ec1ea2014-11-27 20:45:39 +0100[diff] [blame]12282 cur_ptr = s->req.buf->p + txn->req.sl.rq.u;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12283 cur_end = cur_ptr + txn->req.sl.rq.u_l;
12284
12285 /* adjust req line offsets and lengths */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12286 delta = len - offset - (cur_end - cur_ptr);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12287 txn->req.sl.rq.u_l += delta;
12288 txn->req.sl.rq.v += delta;
12289 break;
12290
12291 default:
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12292 return -1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12293 }
12294
12295 /* commit changes and adjust end of message */
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12296 delta = buffer_replace2(s->req.buf, cur_ptr, cur_end, replace + offset, len - offset);
Thierry FOURNIER7f6192c2015-04-26 18:01:40 +0200[diff] [blame]12297 txn->req.sl.rq.l += delta;
12298 txn->hdr_idx.v[0].len += delta;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12299 http_msg_move_end(&txn->req, delta);
Thierry FOURNIERb77aece2015-03-14 13:55:46 +0100[diff] [blame]12300 return 0;
12301}
12302
12303/* This function executes one of the set-{method,path,query,uri} actions. It
12304 * builds a string in the trash from the specified format string. It finds
12305 * the action to be performed in p[2], previously filled by function
12306 * parse_set_req_line(). The replacement action is excuted by the function
12307 * http_action_set_req_line_exec(). It always returns 1. If an error occurs
12308 * the action is canceled, but the rule processing continue.
12309 */
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12310int 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]12311{
12312 chunk_reset(&trash);
12313
12314 /* If we have to create a query string, prepare a '?'. */
12315 if (*(int *)&rule->arg.act.p[2] == 2)
12316 trash.str[trash.len++] = '?';
12317 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, (struct list *)&rule->arg.act.p[0]);
12318
Willy Tarreau987e3fb2015-04-04 01:09:08 +0200[diff] [blame]12319 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]12320 return 1;
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12321}
12322
12323/* parse an http-request action among :
12324 * set-method
12325 * set-path
12326 * set-query
12327 * set-uri
12328 *
12329 * All of them accept a single argument of type string representing a log-format.
12330 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
12331 * head, and p[2] to store the action as an int (0=method, 1=path, 2=query, 3=uri).
12332 * It returns 0 on success, < 0 on error.
12333 */
12334int parse_set_req_line(const char **args, int *orig_arg, struct proxy *px, struct http_req_rule *rule, char **err)
12335{
12336 int cur_arg = *orig_arg;
12337
12338 rule->action = HTTP_REQ_ACT_CUSTOM_CONT;
12339
12340 switch (args[0][4]) {
12341 case 'm' :
12342 *(int *)&rule->arg.act.p[2] = 0;
12343 rule->action_ptr = http_action_set_req_line;
12344 break;
12345 case 'p' :
12346 *(int *)&rule->arg.act.p[2] = 1;
12347 rule->action_ptr = http_action_set_req_line;
12348 break;
12349 case 'q' :
12350 *(int *)&rule->arg.act.p[2] = 2;
12351 rule->action_ptr = http_action_set_req_line;
12352 break;
12353 case 'u' :
12354 *(int *)&rule->arg.act.p[2] = 3;
12355 rule->action_ptr = http_action_set_req_line;
12356 break;
12357 default:
12358 memprintf(err, "internal error: unhandled action '%s'", args[0]);
12359 return -1;
12360 }
12361
12362 if (!*args[cur_arg] ||
12363 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
12364 memprintf(err, "expects exactly 1 argument <format>");
12365 return -1;
12366 }
12367
12368 LIST_INIT((struct list *)&rule->arg.act.p[0]);
12369 proxy->conf.args.ctx = ARGC_HRQ;
12370 parse_logformat_string(args[cur_arg], proxy, (struct list *)&rule->arg.act.p[0], LOG_OPT_HTTP,
12371 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
12372 proxy->conf.args.file, proxy->conf.args.line);
12373
12374 (*orig_arg)++;
12375 return 0;
12376}
12377
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12378/* This function executes the "capture" action. It executes a fetch expression,
12379 * turns the result into a string and puts it in a capture slot. It always
12380 * returns 1. If an error occurs the action is cancelled, but the rule
12381 * processing continues.
12382 */
12383int http_action_req_capture(struct http_req_rule *rule, struct proxy *px, struct stream *s)
12384{
12385 struct session *sess = s->sess;
12386 struct sample *key;
12387 struct sample_expr *expr = rule->arg.act.p[0];
12388 struct cap_hdr *h = rule->arg.act.p[1];
12389 char **cap = s->req_cap;
12390 int len;
12391
12392 key = sample_fetch_string(s->be, sess, s, SMP_OPT_DIR_REQ|SMP_OPT_FINAL, expr);
12393 if (!key)
12394 return 1;
12395
12396 if (cap[h->index] == NULL)
12397 cap[h->index] = pool_alloc2(h->pool);
12398
12399 if (cap[h->index] == NULL) /* no more capture memory */
12400 return 1;
12401
12402 len = key->data.str.len;
12403 if (len > h->len)
12404 len = h->len;
12405
12406 memcpy(cap[h->index], key->data.str.str, len);
12407 cap[h->index][len] = 0;
12408 return 1;
12409}
12410
12411/* parse an "http-request capture" action. It takes a single argument which is
12412 * a sample fetch expression. It stores the expression into arg->act.p[0] and
12413 * the allocated hdr_cap struct into arg->act.p[1].
12414 * It returns 0 on success, < 0 on error.
12415 */
12416int parse_http_req_capture(const char **args, int *orig_arg, struct proxy *px, struct http_req_rule *rule, char **err)
12417{
12418 struct sample_expr *expr;
12419 struct cap_hdr *hdr;
12420 int cur_arg;
Willy Tarreau3986ac12015-05-08 16:13:42 +0200[diff] [blame]12421 int len = 0;
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12422
12423 for (cur_arg = *orig_arg; cur_arg < *orig_arg + 3 && *args[cur_arg]; cur_arg++)
12424 if (strcmp(args[cur_arg], "if") == 0 ||
12425 strcmp(args[cur_arg], "unless") == 0)
12426 break;
12427
12428 if (cur_arg < *orig_arg + 3) {
12429 memprintf(err, "expects <expression> 'len' <length> ");
12430 return -1;
12431 }
12432
12433 if (!(px->cap & PR_CAP_FE)) {
12434 memprintf(err, "proxy '%s' has no frontend capability", px->id);
12435 return -1;
12436 }
12437
12438 LIST_INIT((struct list *)&rule->arg.act.p[0]);
12439 proxy->conf.args.ctx = ARGC_CAP;
12440
12441 cur_arg = *orig_arg;
12442 expr = sample_parse_expr((char **)args, &cur_arg, px->conf.args.file, px->conf.args.line, err, &px->conf.args);
12443 if (!expr)
12444 return -1;
12445
12446 if (!(expr->fetch->val & SMP_VAL_FE_HRQ_HDR)) {
12447 memprintf(err,
12448 "fetch method '%s' extracts information from '%s', none of which is available here",
12449 args[cur_arg-1], sample_src_names(expr->fetch->use));
12450 free(expr);
12451 return -1;
12452 }
12453
12454 if (strcmp(args[cur_arg], "len") == 0) {
12455 cur_arg++;
12456 if (!args[cur_arg]) {
12457 memprintf(err, "missing length value");
12458 free(expr);
12459 return -1;
12460 }
12461 /* we copy the table name for now, it will be resolved later */
12462 len = atoi(args[cur_arg]);
12463 if (len <= 0) {
12464 memprintf(err, "length must be > 0");
12465 free(expr);
12466 return -1;
12467 }
12468 cur_arg++;
12469 }
12470
12471 if (!len) {
12472 memprintf(err, "a positive 'len' argument is mandatory");
12473 free(expr);
12474 return -1;
12475 }
12476
12477
12478 hdr = calloc(sizeof(struct cap_hdr), 1);
12479 hdr->next = px->req_cap;
12480 hdr->name = NULL; /* not a header capture */
12481 hdr->namelen = 0;
12482 hdr->len = len;
12483 hdr->pool = create_pool("caphdr", hdr->len + 1, MEM_F_SHARED);
12484 hdr->index = px->nb_req_cap++;
12485
12486 px->req_cap = hdr;
12487 px->to_log |= LW_REQHDR;
12488
12489 rule->action = HTTP_REQ_ACT_CUSTOM_CONT;
12490 rule->action_ptr = http_action_req_capture;
12491 rule->arg.act.p[0] = expr;
12492 rule->arg.act.p[1] = hdr;
12493
12494 *orig_arg = cur_arg;
12495 return 0;
12496}
12497
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]12498/*
12499 * Return the struct http_req_action_kw associated to a keyword.
12500 */
12501struct http_req_action_kw *action_http_req_custom(const char *kw)
12502{
12503 if (!LIST_ISEMPTY(&http_req_keywords.list)) {
12504 struct http_req_action_kw_list *kw_list;
12505 int i;
12506
12507 list_for_each_entry(kw_list, &http_req_keywords.list, list) {
12508 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
12509 if (!strcmp(kw, kw_list->kw[i].kw))
12510 return &kw_list->kw[i];
12511 }
12512 }
12513 }
12514 return NULL;
12515}
12516
12517/*
12518 * Return the struct http_res_action_kw associated to a keyword.
12519 */
12520struct http_res_action_kw *action_http_res_custom(const char *kw)
12521{
12522 if (!LIST_ISEMPTY(&http_res_keywords.list)) {
12523 struct http_res_action_kw_list *kw_list;
12524 int i;
12525
12526 list_for_each_entry(kw_list, &http_res_keywords.list, list) {
12527 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
12528 if (!strcmp(kw, kw_list->kw[i].kw))
12529 return &kw_list->kw[i];
12530 }
12531 }
12532 }
12533 return NULL;
12534}
12535
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12536/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12537/* All supported ACL keywords must be declared here. */
12538/************************************************************************/
12539
12540/* Note: must not be declared <const> as its list will be overwritten.
12541 * Please take care of keeping this list alphabetically sorted.
12542 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12543static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12544 { "base", "base", PAT_MATCH_STR },
12545 { "base_beg", "base", PAT_MATCH_BEG },
12546 { "base_dir", "base", PAT_MATCH_DIR },
12547 { "base_dom", "base", PAT_MATCH_DOM },
12548 { "base_end", "base", PAT_MATCH_END },
12549 { "base_len", "base", PAT_MATCH_LEN },
12550 { "base_reg", "base", PAT_MATCH_REG },
12551 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]12552
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12553 { "cook", "req.cook", PAT_MATCH_STR },
12554 { "cook_beg", "req.cook", PAT_MATCH_BEG },
12555 { "cook_dir", "req.cook", PAT_MATCH_DIR },
12556 { "cook_dom", "req.cook", PAT_MATCH_DOM },
12557 { "cook_end", "req.cook", PAT_MATCH_END },
12558 { "cook_len", "req.cook", PAT_MATCH_LEN },
12559 { "cook_reg", "req.cook", PAT_MATCH_REG },
12560 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12561
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12562 { "hdr", "req.hdr", PAT_MATCH_STR },
12563 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
12564 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
12565 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
12566 { "hdr_end", "req.hdr", PAT_MATCH_END },
12567 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
12568 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
12569 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12570
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12571 /* these two declarations uses strings with list storage (in place
12572 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
12573 * and delete functions are relative to the list management. The parse
12574 * and match method are related to the corresponding fetch methods. This
12575 * is very particular ACL declaration mode.
12576 */
12577 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
12578 { "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]12579
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12580 { "path", "path", PAT_MATCH_STR },
12581 { "path_beg", "path", PAT_MATCH_BEG },
12582 { "path_dir", "path", PAT_MATCH_DIR },
12583 { "path_dom", "path", PAT_MATCH_DOM },
12584 { "path_end", "path", PAT_MATCH_END },
12585 { "path_len", "path", PAT_MATCH_LEN },
12586 { "path_reg", "path", PAT_MATCH_REG },
12587 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12588
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12589 { "req_ver", "req.ver", PAT_MATCH_STR },
12590 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12591
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12592 { "scook", "res.cook", PAT_MATCH_STR },
12593 { "scook_beg", "res.cook", PAT_MATCH_BEG },
12594 { "scook_dir", "res.cook", PAT_MATCH_DIR },
12595 { "scook_dom", "res.cook", PAT_MATCH_DOM },
12596 { "scook_end", "res.cook", PAT_MATCH_END },
12597 { "scook_len", "res.cook", PAT_MATCH_LEN },
12598 { "scook_reg", "res.cook", PAT_MATCH_REG },
12599 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12600
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12601 { "shdr", "res.hdr", PAT_MATCH_STR },
12602 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
12603 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
12604 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
12605 { "shdr_end", "res.hdr", PAT_MATCH_END },
12606 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
12607 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
12608 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12609
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12610 { "url", "url", PAT_MATCH_STR },
12611 { "url_beg", "url", PAT_MATCH_BEG },
12612 { "url_dir", "url", PAT_MATCH_DIR },
12613 { "url_dom", "url", PAT_MATCH_DOM },
12614 { "url_end", "url", PAT_MATCH_END },
12615 { "url_len", "url", PAT_MATCH_LEN },
12616 { "url_reg", "url", PAT_MATCH_REG },
12617 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12618
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]12619 { "urlp", "urlp", PAT_MATCH_STR },
12620 { "urlp_beg", "urlp", PAT_MATCH_BEG },
12621 { "urlp_dir", "urlp", PAT_MATCH_DIR },
12622 { "urlp_dom", "urlp", PAT_MATCH_DOM },
12623 { "urlp_end", "urlp", PAT_MATCH_END },
12624 { "urlp_len", "urlp", PAT_MATCH_LEN },
12625 { "urlp_reg", "urlp", PAT_MATCH_REG },
12626 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12627
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]12628 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]12629}};
12630
12631/************************************************************************/
12632/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12633/************************************************************************/
12634/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]12635static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12636 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12637 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
12638 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
12639
Willy Tarreau87b09662015-04-03 00:22:06 +0200[diff] [blame]12640 /* capture are allocated and are permanent in the stream */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12641 { "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]12642
12643 /* retrieve these captures from the HTTP logs */
12644 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12645 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12646 { "capture.req.ver", smp_fetch_capture_req_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
12647
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12648 { "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]12649 { "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]12650
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12651 /* cookie is valid in both directions (eg: for "stick ...") but cook*
12652 * are only here to match the ACL's name, are request-only and are used
12653 * for ACL compatibility only.
12654 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12655 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12656 { "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]12657 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12658 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12659
12660 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
12661 * only here to match the ACL's name, are request-only and are used for
12662 * ACL compatibility only.
12663 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12664 { "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]12665 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12666 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
12667 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
12668
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]12669 { "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]12670 { "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]12671 { "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]12672 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12673 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]12674 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12675
12676 /* HTTP protocol on the request path */
12677 { "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]12678 { "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]12679
12680 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12681 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
12682 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12683
Willy Tarreaua5910cc2015-05-02 00:46:08 +0200[diff] [blame]12684 { "req.body", smp_fetch_body, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
12685 { "req.body_len", smp_fetch_body_len, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
12686 { "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]12687 { "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]12688
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12689 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12690 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
12691 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12692
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]12693 /* 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]12694 { "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]12695 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12696 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12697
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12698 { "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]12699 { "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]12700 { "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]12701 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
12702 { "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]12703 { "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]12704 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
12705
12706 /* 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]12707 { "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]12708 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
12709 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
12710
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12711 { "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]12712 { "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]12713 { "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]12714 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
12715 { "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]12716 { "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]12717 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
12718
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12719 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12720 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12721 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
12722 { "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]12723 { "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]12724
12725 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12726 { "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]12727 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
12728 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
12729 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
12730
12731 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]12732 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]12733 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
12734 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]12735 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
12736 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
Willy Tarreau1ede1da2015-05-07 16:06:18 +0200[diff] [blame]12737 { "url_param", smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12738 { "urlp" , smp_fetch_url_param, ARG2(0,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
12739 { "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]12740 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]12741}};
12742
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12743
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12744/************************************************************************/
12745/* All supported converter keywords must be declared here. */
12746/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12747/* Note: must not be declared <const> as its list will be overwritten */
12748static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]12749 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR},
12750 { "language", sample_conv_q_prefered, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_T_STR},
Thierry FOURNIER82ff3c92015-05-07 15:46:20 +0200[diff] [blame]12751 { "url_dec", sample_conv_url_dec, 0, NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12752 { NULL, NULL, 0, 0, 0 },
12753}};
12754
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12755/************************************************************************/
12756/* All supported http-request action keywords must be declared here. */
12757/************************************************************************/
12758struct http_req_action_kw_list http_req_actions = {
12759 .scope = "http",
12760 .kw = {
Willy Tarreaua9083d02015-05-08 15:27:59 +0200[diff] [blame]12761 { "capture", parse_http_req_capture },
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12762 { "set-method", parse_set_req_line },
12763 { "set-path", parse_set_req_line },
12764 { "set-query", parse_set_req_line },
12765 { "set-uri", parse_set_req_line },
Willy Tarreaucb703b02015-04-03 09:52:01 +0200[diff] [blame]12766 { NULL, NULL }
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12767 }
12768};
12769
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12770__attribute__((constructor))
12771static void __http_protocol_init(void)
12772{
12773 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]12774 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]12775 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]12776 http_req_keywords_register(&http_req_actions);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]12777}
12778
12779
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]12780/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]12781 * Local variables:
12782 * c-indent-level: 8
12783 * c-basic-offset: 8
12784 * End:
12785 */