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git01.mediatek.com / haproxy / fcf75d200b1e6668a9498931c49f023f3b3c7153 / . / src / proto_http.c
blob: f567cece9100b0b62326ff43d01f6120fcca3a05 [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 Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]64#include <proto/session.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"
Godbachb3016542014-12-17 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,
134 [HTTP_ERR_408] = 408,
135 [HTTP_ERR_500] = 500,
136 [HTTP_ERR_502] = 502,
137 [HTTP_ERR_503] = 503,
138 [HTTP_ERR_504] = 504,
139};
140
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]141static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]142 [HTTP_ERR_200] =
143 "HTTP/1.0 200 OK\r\n"
144 "Cache-Control: no-cache\r\n"
145 "Connection: close\r\n"
146 "Content-Type: text/html\r\n"
147 "\r\n"
148 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
149
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]150 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]151 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]152 "Cache-Control: no-cache\r\n"
153 "Connection: close\r\n"
154 "Content-Type: text/html\r\n"
155 "\r\n"
156 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
157
158 [HTTP_ERR_403] =
159 "HTTP/1.0 403 Forbidden\r\n"
160 "Cache-Control: no-cache\r\n"
161 "Connection: close\r\n"
162 "Content-Type: text/html\r\n"
163 "\r\n"
164 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
165
166 [HTTP_ERR_408] =
167 "HTTP/1.0 408 Request Time-out\r\n"
168 "Cache-Control: no-cache\r\n"
169 "Connection: close\r\n"
170 "Content-Type: text/html\r\n"
171 "\r\n"
172 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
173
174 [HTTP_ERR_500] =
175 "HTTP/1.0 500 Server Error\r\n"
176 "Cache-Control: no-cache\r\n"
177 "Connection: close\r\n"
178 "Content-Type: text/html\r\n"
179 "\r\n"
180 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
181
182 [HTTP_ERR_502] =
183 "HTTP/1.0 502 Bad Gateway\r\n"
184 "Cache-Control: no-cache\r\n"
185 "Connection: close\r\n"
186 "Content-Type: text/html\r\n"
187 "\r\n"
188 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
189
190 [HTTP_ERR_503] =
191 "HTTP/1.0 503 Service Unavailable\r\n"
192 "Cache-Control: no-cache\r\n"
193 "Connection: close\r\n"
194 "Content-Type: text/html\r\n"
195 "\r\n"
196 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
197
198 [HTTP_ERR_504] =
199 "HTTP/1.0 504 Gateway Time-out\r\n"
200 "Cache-Control: no-cache\r\n"
201 "Connection: close\r\n"
202 "Content-Type: text/html\r\n"
203 "\r\n"
204 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
205
206};
207
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]208/* status codes available for the stats admin page (strictly 4 chars length) */
209const char *stat_status_codes[STAT_STATUS_SIZE] = {
210 [STAT_STATUS_DENY] = "DENY",
211 [STAT_STATUS_DONE] = "DONE",
212 [STAT_STATUS_ERRP] = "ERRP",
213 [STAT_STATUS_EXCD] = "EXCD",
214 [STAT_STATUS_NONE] = "NONE",
215 [STAT_STATUS_PART] = "PART",
216 [STAT_STATUS_UNKN] = "UNKN",
217};
218
219
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]220/* List head of all known action keywords for "http-request" */
221struct http_req_action_kw_list http_req_keywords = {
222 .list = LIST_HEAD_INIT(http_req_keywords.list)
223};
224
225/* List head of all known action keywords for "http-response" */
226struct http_res_action_kw_list http_res_keywords = {
227 .list = LIST_HEAD_INIT(http_res_keywords.list)
228};
229
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]230/* We must put the messages here since GCC cannot initialize consts depending
231 * on strlen().
232 */
233struct chunk http_err_chunks[HTTP_ERR_SIZE];
234
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]235/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
236static struct hdr_ctx static_hdr_ctx;
237
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]238#define FD_SETS_ARE_BITFIELDS
239#ifdef FD_SETS_ARE_BITFIELDS
240/*
241 * This map is used with all the FD_* macros to check whether a particular bit
242 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
243 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
244 * byte should be encoded. Be careful to always pass bytes from 0 to 255
245 * exclusively to the macros.
246 */
247fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
248fd_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]249fd_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]250
251#else
252#error "Check if your OS uses bitfields for fd_sets"
253#endif
254
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]255static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn);
256
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]257void init_proto_http()
258{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]259 int i;
260 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]261 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]262
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]263 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
264 if (!http_err_msgs[msg]) {
265 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
266 abort();
267 }
268
269 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
270 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
271 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]272
273 /* initialize the log header encoding map : '{|}"#' should be encoded with
274 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
275 * URL encoding only requires '"', '#' to be encoded as well as non-
276 * printable characters above.
277 */
278 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
279 memset(url_encode_map, 0, sizeof(url_encode_map));
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]280 memset(http_encode_map, 0, sizeof(url_encode_map));
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]281 for (i = 0; i < 32; i++) {
282 FD_SET(i, hdr_encode_map);
283 FD_SET(i, url_encode_map);
284 }
285 for (i = 127; i < 256; i++) {
286 FD_SET(i, hdr_encode_map);
287 FD_SET(i, url_encode_map);
288 }
289
290 tmp = "\"#{|}";
291 while (*tmp) {
292 FD_SET(*tmp, hdr_encode_map);
293 tmp++;
294 }
295
296 tmp = "\"#";
297 while (*tmp) {
298 FD_SET(*tmp, url_encode_map);
299 tmp++;
300 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]301
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]302 /* initialize the http header encoding map. The draft httpbis define the
303 * header content as:
304 *
305 * HTTP-message = start-line
306 * *( header-field CRLF )
307 * CRLF
308 * [ message-body ]
309 * header-field = field-name ":" OWS field-value OWS
310 * field-value = *( field-content / obs-fold )
311 * field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
312 * obs-fold = CRLF 1*( SP / HTAB )
313 * field-vchar = VCHAR / obs-text
314 * VCHAR = %x21-7E
315 * obs-text = %x80-FF
316 *
317 * All the chars are encoded except "VCHAR", "obs-text", SP and HTAB.
318 * The encoded chars are form 0x00 to 0x08, 0x0a to 0x1f and 0x7f. The
319 * "obs-fold" is volontary forgotten because haproxy remove this.
320 */
321 memset(http_encode_map, 0, sizeof(http_encode_map));
322 for (i = 0x00; i <= 0x08; i++)
323 FD_SET(i, http_encode_map);
324 for (i = 0x0a; i <= 0x1f; i++)
325 FD_SET(i, http_encode_map);
326 FD_SET(0x7f, http_encode_map);
327
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]328 /* memory allocations */
329 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]330 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]331}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]332
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]333/*
334 * We have 26 list of methods (1 per first letter), each of which can have
335 * up to 3 entries (2 valid, 1 null).
336 */
337struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]338 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]339 int len;
340 const char text[8];
341};
342
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]343const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]344 ['C' - 'A'] = {
345 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
346 },
347 ['D' - 'A'] = {
348 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
349 },
350 ['G' - 'A'] = {
351 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
352 },
353 ['H' - 'A'] = {
354 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
355 },
356 ['P' - 'A'] = {
357 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
358 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
359 },
360 ['T' - 'A'] = {
361 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
362 },
363 /* rest is empty like this :
364 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
365 */
366};
367
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]368const struct http_method_name http_known_methods[HTTP_METH_OTHER] = {
369 [HTTP_METH_NONE] = { "", 0 },
370 [HTTP_METH_OPTIONS] = { "OPTIONS", 7 },
371 [HTTP_METH_GET] = { "GET", 3 },
372 [HTTP_METH_HEAD] = { "HEAD", 4 },
373 [HTTP_METH_POST] = { "POST", 4 },
374 [HTTP_METH_PUT] = { "PUT", 3 },
375 [HTTP_METH_DELETE] = { "DELETE", 6 },
376 [HTTP_METH_TRACE] = { "TRACE", 5 },
377 [HTTP_METH_CONNECT] = { "CONNECT", 7 },
378};
379
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]380/* 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]381 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]382 * RFC2616 for those chars.
383 */
384
385const char http_is_spht[256] = {
386 [' '] = 1, ['\t'] = 1,
387};
388
389const char http_is_crlf[256] = {
390 ['\r'] = 1, ['\n'] = 1,
391};
392
393const char http_is_lws[256] = {
394 [' '] = 1, ['\t'] = 1,
395 ['\r'] = 1, ['\n'] = 1,
396};
397
398const char http_is_sep[256] = {
399 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
400 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
401 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
402 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
403 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
404};
405
406const char http_is_ctl[256] = {
407 [0 ... 31] = 1,
408 [127] = 1,
409};
410
411/*
412 * A token is any ASCII char that is neither a separator nor a CTL char.
413 * Do not overwrite values in assignment since gcc-2.95 will not handle
414 * them correctly. Instead, define every non-CTL char's status.
415 */
416const char http_is_token[256] = {
417 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
418 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
419 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
420 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
421 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
422 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
423 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
424 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
425 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
426 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
427 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
428 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
429 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
430 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
431 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
432 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
433 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
434 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
435 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
436 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
437 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
438 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
439 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
440 ['|'] = 1, ['}'] = 0, ['~'] = 1,
441};
442
443
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]444/*
445 * An http ver_token is any ASCII which can be found in an HTTP version,
446 * which includes 'H', 'T', 'P', '/', '.' and any digit.
447 */
448const char http_is_ver_token[256] = {
449 ['.'] = 1, ['/'] = 1,
450 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
451 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
452 ['H'] = 1, ['P'] = 1, ['T'] = 1,
453};
454
455
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]456/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]457 * Adds a header and its CRLF at the tail of the message's buffer, just before
458 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]459 * The header is also automatically added to the index <hdr_idx>, and the end
460 * of headers is automatically adjusted. The number of bytes added is returned
461 * on success, otherwise <0 is returned indicating an error.
462 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]463int 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]464{
465 int bytes, len;
466
467 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]468 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]469 if (!bytes)
470 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]471 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]472 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
473}
474
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. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]478 * the buffer is only opened and the space reserved, but nothing is copied.
479 * The header is also automatically added to the index <hdr_idx>, and the end
480 * of headers is automatically adjusted. The number of bytes added is returned
481 * on success, otherwise <0 is returned indicating an error.
482 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]483int http_header_add_tail2(struct http_msg *msg,
484 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]485{
486 int bytes;
487
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]488 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]489 if (!bytes)
490 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]491 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]492 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
493}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]494
495/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]496 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
497 * If so, returns the position of the first non-space character relative to
498 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
499 * to return a pointer to the place after the first space. Returns 0 if the
500 * header name does not match. Checks are case-insensitive.
501 */
502int http_header_match2(const char *hdr, const char *end,
503 const char *name, int len)
504{
505 const char *val;
506
507 if (hdr + len >= end)
508 return 0;
509 if (hdr[len] != ':')
510 return 0;
511 if (strncasecmp(hdr, name, len) != 0)
512 return 0;
513 val = hdr + len + 1;
514 while (val < end && HTTP_IS_SPHT(*val))
515 val++;
516 if ((val >= end) && (len + 2 <= end - hdr))
517 return len + 2; /* we may replace starting from second space */
518 return val - hdr;
519}
520
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]521/* Find the first or next occurrence of header <name> in message buffer <sol>
522 * using headers index <idx>, and return it in the <ctx> structure. This
523 * structure holds everything necessary to use the header and find next
524 * occurrence. If its <idx> member is 0, the header is searched from the
525 * beginning. Otherwise, the next occurrence is returned. The function returns
526 * 1 when it finds a value, and 0 when there is no more. It is very similar to
527 * http_find_header2() except that it is designed to work with full-line headers
528 * whose comma is not a delimiter but is part of the syntax. As a special case,
529 * if ctx->val is NULL when searching for a new values of a header, the current
530 * header is rescanned. This allows rescanning after a header deletion.
531 */
532int http_find_full_header2(const char *name, int len,
533 char *sol, struct hdr_idx *idx,
534 struct hdr_ctx *ctx)
535{
536 char *eol, *sov;
537 int cur_idx, old_idx;
538
539 cur_idx = ctx->idx;
540 if (cur_idx) {
541 /* We have previously returned a header, let's search another one */
542 sol = ctx->line;
543 eol = sol + idx->v[cur_idx].len;
544 goto next_hdr;
545 }
546
547 /* first request for this header */
548 sol += hdr_idx_first_pos(idx);
549 old_idx = 0;
550 cur_idx = hdr_idx_first_idx(idx);
551 while (cur_idx) {
552 eol = sol + idx->v[cur_idx].len;
553
554 if (len == 0) {
555 /* No argument was passed, we want any header.
556 * To achieve this, we simply build a fake request. */
557 while (sol + len < eol && sol[len] != ':')
558 len++;
559 name = sol;
560 }
561
562 if ((len < eol - sol) &&
563 (sol[len] == ':') &&
564 (strncasecmp(sol, name, len) == 0)) {
565 ctx->del = len;
566 sov = sol + len + 1;
567 while (sov < eol && http_is_lws[(unsigned char)*sov])
568 sov++;
569
570 ctx->line = sol;
571 ctx->prev = old_idx;
572 ctx->idx = cur_idx;
573 ctx->val = sov - sol;
574 ctx->tws = 0;
575 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
576 eol--;
577 ctx->tws++;
578 }
579 ctx->vlen = eol - sov;
580 return 1;
581 }
582 next_hdr:
583 sol = eol + idx->v[cur_idx].cr + 1;
584 old_idx = cur_idx;
585 cur_idx = idx->v[cur_idx].next;
586 }
587 return 0;
588}
589
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]590/* Find the end of the header value contained between <s> and <e>. See RFC2616,
591 * par 2.2 for more information. Note that it requires a valid header to return
592 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]593 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]594char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]595{
596 int quoted, qdpair;
597
598 quoted = qdpair = 0;
599 for (; s < e; s++) {
600 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]601 else if (quoted) {
602 if (*s == '\\') qdpair = 1;
603 else if (*s == '"') quoted = 0;
604 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]605 else if (*s == '"') quoted = 1;
606 else if (*s == ',') return s;
607 }
608 return s;
609}
610
611/* Find the first or next occurrence of header <name> in message buffer <sol>
612 * using headers index <idx>, and return it in the <ctx> structure. This
613 * structure holds everything necessary to use the header and find next
614 * occurrence. If its <idx> member is 0, the header is searched from the
615 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]616 * 1 when it finds a value, and 0 when there is no more. It is designed to work
617 * with headers defined as comma-separated lists. As a special case, if ctx->val
618 * is NULL when searching for a new values of a header, the current header is
619 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]620 */
621int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]622 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]623 struct hdr_ctx *ctx)
624{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]625 char *eol, *sov;
626 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]627
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]628 cur_idx = ctx->idx;
629 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]630 /* We have previously returned a value, let's search
631 * another one on the same line.
632 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]633 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]634 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]635 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]636 eol = sol + idx->v[cur_idx].len;
637
638 if (sov >= eol)
639 /* no more values in this header */
640 goto next_hdr;
641
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]642 /* values remaining for this header, skip the comma but save it
643 * for later use (eg: for header deletion).
644 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]645 sov++;
646 while (sov < eol && http_is_lws[(unsigned char)*sov])
647 sov++;
648
649 goto return_hdr;
650 }
651
652 /* first request for this header */
653 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]654 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]655 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]656 while (cur_idx) {
657 eol = sol + idx->v[cur_idx].len;
658
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]659 if (len == 0) {
660 /* No argument was passed, we want any header.
661 * To achieve this, we simply build a fake request. */
662 while (sol + len < eol && sol[len] != ':')
663 len++;
664 name = sol;
665 }
666
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]667 if ((len < eol - sol) &&
668 (sol[len] == ':') &&
669 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]670 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]671 sov = sol + len + 1;
672 while (sov < eol && http_is_lws[(unsigned char)*sov])
673 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]674
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]675 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]676 ctx->prev = old_idx;
677 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]678 ctx->idx = cur_idx;
679 ctx->val = sov - sol;
680
681 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]682 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]683 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]684 eol--;
685 ctx->tws++;
686 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]687 ctx->vlen = eol - sov;
688 return 1;
689 }
690 next_hdr:
691 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]692 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]693 cur_idx = idx->v[cur_idx].next;
694 }
695 return 0;
696}
697
698int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]699 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]700 struct hdr_ctx *ctx)
701{
702 return http_find_header2(name, strlen(name), sol, idx, ctx);
703}
704
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]705/* Remove one value of a header. This only works on a <ctx> returned by one of
706 * the http_find_header functions. The value is removed, as well as surrounding
707 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]708 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]709 * message <msg>. The new index is returned. If it is zero, it means there is
710 * no more header, so any processing may stop. The ctx is always left in a form
711 * that can be handled by http_find_header2() to find next occurrence.
712 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]713int 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]714{
715 int cur_idx = ctx->idx;
716 char *sol = ctx->line;
717 struct hdr_idx_elem *hdr;
718 int delta, skip_comma;
719
720 if (!cur_idx)
721 return 0;
722
723 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]724 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]725 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]726 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]727 http_msg_move_end(msg, delta);
728 idx->used--;
729 hdr->len = 0; /* unused entry */
730 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]731 if (idx->tail == ctx->idx)
732 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]733 ctx->idx = ctx->prev; /* walk back to the end of previous header */
Willy Tarreau14acc652015-01-07 17:23:50 +0100[diff] [blame]734 ctx->line -= idx->v[ctx->idx].len + idx->v[ctx->idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]735 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]736 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]737 return ctx->idx;
738 }
739
740 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]741 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
742 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]743 */
744
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]745 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]746 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]747 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]748 NULL, 0);
749 hdr->len += delta;
750 http_msg_move_end(msg, delta);
751 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]752 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]753 return ctx->idx;
754}
755
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]756/* This function handles a server error at the stream interface level. The
757 * stream interface is assumed to be already in a closed state. An optional
758 * message is copied into the input buffer, and an HTTP status code stored.
759 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]760 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]761 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]762static void http_server_error(struct session *s, struct stream_interface *si,
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]763 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]764{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]765 channel_auto_read(si->ob);
766 channel_abort(si->ob);
767 channel_auto_close(si->ob);
768 channel_erase(si->ob);
769 channel_auto_close(si->ib);
770 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]771 if (status > 0 && msg) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]772 s->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]773 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]774 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]775 if (!(s->flags & SN_ERR_MASK))
776 s->flags |= err;
777 if (!(s->flags & SN_FINST_MASK))
778 s->flags |= finst;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]779}
780
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]781/* This function returns the appropriate error location for the given session
782 * and message.
783 */
784
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]785struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]786{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]787 if (s->be->errmsg[msgnum].str)
788 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]789 else if (s->fe->errmsg[msgnum].str)
790 return &s->fe->errmsg[msgnum];
791 else
792 return &http_err_chunks[msgnum];
793}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]794
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]795/*
796 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
797 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
798 */
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]799enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]800{
801 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]802 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]803
804 m = ((unsigned)*str - 'A');
805
806 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]807 for (h = http_methods[m]; h->len > 0; h++) {
808 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]809 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]810 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]811 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]812 };
813 return HTTP_METH_OTHER;
814 }
815 return HTTP_METH_NONE;
816
817}
818
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]819/* Parse the URI from the given transaction (which is assumed to be in request
820 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
821 * It is returned otherwise.
822 */
823static char *
824http_get_path(struct http_txn *txn)
825{
826 char *ptr, *end;
827
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]828 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]829 end = ptr + txn->req.sl.rq.u_l;
830
831 if (ptr >= end)
832 return NULL;
833
834 /* RFC2616, par. 5.1.2 :
835 * Request-URI = "*" | absuri | abspath | authority
836 */
837
838 if (*ptr == '*')
839 return NULL;
840
841 if (isalpha((unsigned char)*ptr)) {
842 /* this is a scheme as described by RFC3986, par. 3.1 */
843 ptr++;
844 while (ptr < end &&
845 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
846 ptr++;
847 /* skip '://' */
848 if (ptr == end || *ptr++ != ':')
849 return NULL;
850 if (ptr == end || *ptr++ != '/')
851 return NULL;
852 if (ptr == end || *ptr++ != '/')
853 return NULL;
854 }
855 /* skip [user[:passwd]@]host[:[port]] */
856
857 while (ptr < end && *ptr != '/')
858 ptr++;
859
860 if (ptr == end)
861 return NULL;
862
863 /* OK, we got the '/' ! */
864 return ptr;
865}
866
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]867/* Parse the URI from the given string and look for the "/" beginning the PATH.
868 * If not found, return NULL. It is returned otherwise.
869 */
870static char *
871http_get_path_from_string(char *str)
872{
873 char *ptr = str;
874
875 /* RFC2616, par. 5.1.2 :
876 * Request-URI = "*" | absuri | abspath | authority
877 */
878
879 if (*ptr == '*')
880 return NULL;
881
882 if (isalpha((unsigned char)*ptr)) {
883 /* this is a scheme as described by RFC3986, par. 3.1 */
884 ptr++;
885 while (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.')
886 ptr++;
887 /* skip '://' */
888 if (*ptr == '\0' || *ptr++ != ':')
889 return NULL;
890 if (*ptr == '\0' || *ptr++ != '/')
891 return NULL;
892 if (*ptr == '\0' || *ptr++ != '/')
893 return NULL;
894 }
895 /* skip [user[:passwd]@]host[:[port]] */
896
897 while (*ptr != '\0' && *ptr != ' ' && *ptr != '/')
898 ptr++;
899
900 if (*ptr == '\0' || *ptr == ' ')
901 return NULL;
902
903 /* OK, we got the '/' ! */
904 return ptr;
905}
906
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]907/* Returns a 302 for a redirectable request that reaches a server working in
908 * in redirect mode. This may only be called just after the stream interface
909 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
910 * follow normal proxy processing. NOTE: this function is designed to support
911 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]912 */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]913void http_perform_server_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]914{
915 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]916 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]917 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]918 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]919
920 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]921 trash.len = strlen(HTTP_302);
922 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]923
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]924 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]925
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]926 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]927 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]928 return;
929
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]930 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]931 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]932 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
933 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]934 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]935
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]936 /* 3: add the request URI. Since it was already forwarded, we need
937 * to temporarily rewind the buffer.
938 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]939 txn = &s->txn;
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]940 b_rew(s->req->buf, rewind = http_hdr_rewind(&txn->req));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]941
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]942 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]943 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]944
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]945 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]946
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]947 if (!path)
948 return;
949
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]950 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]951 return;
952
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]953 memcpy(trash.str + trash.len, path, len);
954 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]955
956 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]957 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
958 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]959 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]960 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
961 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]962 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]963
964 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]965 si_shutr(si);
966 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]967 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]968 si->state = SI_ST_CLO;
969
970 /* send the message */
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]971 http_server_error(s, si, SN_ERR_LOCAL, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]972
973 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]974 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500[diff] [blame]975 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]976}
977
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]978/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]979 * that the server side is closed. Note that err_type is actually a
980 * bitmask, where almost only aborts may be cumulated with other
981 * values. We consider that aborted operations are more important
982 * than timeouts or errors due to the fact that nobody else in the
983 * logs might explain incomplete retries. All others should avoid
984 * being cumulated. It should normally not be possible to have multiple
985 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]986 * Note that connection errors appearing on the second request of a keep-alive
987 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]988 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]989void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]990{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]991 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]992
993 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]994 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]995 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]996 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]997 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]998 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
999 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1000 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1001 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1002 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1003 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1004 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1005 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1006 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1007 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1008 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
1009 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1010 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1011 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau36346242014-02-24 18:26:30 +0100[diff] [blame]1012 503, (s->flags & SN_SRV_REUSED) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1013 http_error_message(s, HTTP_ERR_503));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]1014 else if (err_type & SI_ET_CONN_RES)
1015 http_server_error(s, si, SN_ERR_RESOURCE, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1016 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
1017 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1018 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1019 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1020 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1021}
1022
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1023extern const char sess_term_cond[8];
1024extern const char sess_fin_state[8];
1025extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1026struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]1027struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]1028struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1029
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1030/*
1031 * Capture headers from message starting at <som> according to header list
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1032 * <cap_hdr>, and fill the <cap> pointers appropriately.
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1033 */
1034void capture_headers(char *som, struct hdr_idx *idx,
1035 char **cap, struct cap_hdr *cap_hdr)
1036{
1037 char *eol, *sol, *col, *sov;
1038 int cur_idx;
1039 struct cap_hdr *h;
1040 int len;
1041
1042 sol = som + hdr_idx_first_pos(idx);
1043 cur_idx = hdr_idx_first_idx(idx);
1044
1045 while (cur_idx) {
1046 eol = sol + idx->v[cur_idx].len;
1047
1048 col = sol;
1049 while (col < eol && *col != ':')
1050 col++;
1051
1052 sov = col + 1;
1053 while (sov < eol && http_is_lws[(unsigned char)*sov])
1054 sov++;
1055
1056 for (h = cap_hdr; h; h = h->next) {
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1057 if (h->namelen && (h->namelen == col - sol) &&
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1058 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1059 if (cap[h->index] == NULL)
1060 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1061 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1062
1063 if (cap[h->index] == NULL) {
1064 Alert("HTTP capture : out of memory.\n");
1065 continue;
1066 }
1067
1068 len = eol - sov;
1069 if (len > h->len)
1070 len = h->len;
1071
1072 memcpy(cap[h->index], sov, len);
1073 cap[h->index][len]=0;
1074 }
1075 }
1076 sol = eol + idx->v[cur_idx].cr + 1;
1077 cur_idx = idx->v[cur_idx].next;
1078 }
1079}
1080
1081
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1082/* either we find an LF at <ptr> or we jump to <bad>.
1083 */
1084#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1085
1086/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1087 * otherwise to <http_msg_ood> with <state> set to <st>.
1088 */
1089#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1090 ptr++; \
1091 if (likely(ptr < end)) \
1092 goto good; \
1093 else { \
1094 state = (st); \
1095 goto http_msg_ood; \
1096 } \
1097 } while (0)
1098
1099
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1100/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1101 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1102 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1103 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1104 * will give undefined results.
1105 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1106 * and that msg->sol points to the beginning of the response.
1107 * If a complete line is found (which implies that at least one CR or LF is
1108 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1109 * returned indicating an incomplete line (which does not mean that parts have
1110 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1111 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1112 * upon next call.
1113 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1114 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1115 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1116 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1117 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1118 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1119const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1120 enum ht_state state, const char *ptr, const char *end,
1121 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1122{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1123 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1124
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1125 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1126 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1127 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1128 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1129 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1130
1131 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1132 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1133 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1134 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1135 state = HTTP_MSG_ERROR;
1136 break;
1137
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1138 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1139 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1140 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1141 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1142 goto http_msg_rpcode;
1143 }
1144 if (likely(HTTP_IS_SPHT(*ptr)))
1145 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1146 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1147 state = HTTP_MSG_ERROR;
1148 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1149
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1150 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1151 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1152 if (likely(!HTTP_IS_LWS(*ptr)))
1153 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1154
1155 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1156 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1157 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1158 }
1159
1160 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1161 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1162 http_msg_rsp_reason:
1163 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1164 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1165 msg->sl.st.r_l = 0;
1166 goto http_msg_rpline_eol;
1167
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1168 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1169 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1170 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1171 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1172 goto http_msg_rpreason;
1173 }
1174 if (likely(HTTP_IS_SPHT(*ptr)))
1175 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1176 /* so it's a CR/LF, so there is no reason phrase */
1177 goto http_msg_rsp_reason;
1178
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1179 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1180 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1181 if (likely(!HTTP_IS_CRLF(*ptr)))
1182 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1183 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1184 http_msg_rpline_eol:
1185 /* We have seen the end of line. Note that we do not
1186 * necessarily have the \n yet, but at least we know that we
1187 * have EITHER \r OR \n, otherwise the response would not be
1188 * complete. We can then record the response length and return
1189 * to the caller which will be able to register it.
1190 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1191 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1192 return ptr;
1193
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1194 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1195#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1196 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1197 exit(1);
1198#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1199 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1200 }
1201
1202 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1203 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1204 if (ret_state)
1205 *ret_state = state;
1206 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1207 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1208 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1209}
1210
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1211/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1212 * This function parses a request line between <ptr> and <end>, starting with
1213 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1214 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1215 * will give undefined results.
1216 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1217 * and that msg->sol points to the beginning of the request.
1218 * If a complete line is found (which implies that at least one CR or LF is
1219 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1220 * returned indicating an incomplete line (which does not mean that parts have
1221 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1222 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1223 * upon next call.
1224 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1225 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1226 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1227 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1228 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1229 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1230const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1231 enum ht_state state, const char *ptr, const char *end,
1232 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1233{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1234 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1235
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1236 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1237 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1238 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1239 if (likely(HTTP_IS_TOKEN(*ptr)))
1240 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1241
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1242 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1243 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1244 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1245 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1246
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1247 if (likely(HTTP_IS_CRLF(*ptr))) {
1248 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1249 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1250 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1251 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1252 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1253 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1254 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1255 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1256 msg->sl.rq.v_l = 0;
1257 goto http_msg_rqline_eol;
1258 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1259 state = HTTP_MSG_ERROR;
1260 break;
1261
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1262 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1263 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1264 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1265 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1266 goto http_msg_rquri;
1267 }
1268 if (likely(HTTP_IS_SPHT(*ptr)))
1269 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1270 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1271 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1272
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1273 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1274 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1275 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1276 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1277
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1278 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1279 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1280 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1281 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1282
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1283 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1284 /* non-ASCII chars are forbidden unless option
1285 * accept-invalid-http-request is enabled in the frontend.
1286 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1287 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1288 if (msg->err_pos < -1)
1289 goto invalid_char;
1290 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1291 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1292 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1293 }
1294
1295 if (likely(HTTP_IS_CRLF(*ptr))) {
1296 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1297 goto http_msg_req09_uri_e;
1298 }
1299
1300 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1301 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1302 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1303 state = HTTP_MSG_ERROR;
1304 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1305
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1306 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1307 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1308 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1309 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1310 goto http_msg_rqver;
1311 }
1312 if (likely(HTTP_IS_SPHT(*ptr)))
1313 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1314 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1315 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1316
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1317 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1318 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1319 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1320 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1321
1322 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1323 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1324 http_msg_rqline_eol:
1325 /* We have seen the end of line. Note that we do not
1326 * necessarily have the \n yet, but at least we know that we
1327 * have EITHER \r OR \n, otherwise the request would not be
1328 * complete. We can then record the request length and return
1329 * to the caller which will be able to register it.
1330 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1331 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1332 return ptr;
1333 }
1334
1335 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1336 state = HTTP_MSG_ERROR;
1337 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1338
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1339 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1340#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1341 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1342 exit(1);
1343#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1344 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1345 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1346
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1347 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1348 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1349 if (ret_state)
1350 *ret_state = state;
1351 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1352 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1353 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1354}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1355
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1356/*
1357 * Returns the data from Authorization header. Function may be called more
1358 * than once so data is stored in txn->auth_data. When no header is found
1359 * 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]1360 * searching again for something we are unable to find anyway. However, if
1361 * the result if valid, the cache is not reused because we would risk to
1362 * have the credentials overwritten by another session in parallel.
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1363 */
1364
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1365/* This bufffer is initialized in the file 'src/haproxy.c'. This length is
1366 * set according to global.tune.bufsize.
1367 */
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1368char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1369
1370int
1371get_http_auth(struct session *s)
1372{
1373
1374 struct http_txn *txn = &s->txn;
1375 struct chunk auth_method;
1376 struct hdr_ctx ctx;
1377 char *h, *p;
1378 int len;
1379
1380#ifdef DEBUG_AUTH
1381 printf("Auth for session %p: %d\n", s, txn->auth.method);
1382#endif
1383
1384 if (txn->auth.method == HTTP_AUTH_WRONG)
1385 return 0;
1386
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1387 txn->auth.method = HTTP_AUTH_WRONG;
1388
1389 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1390
1391 if (txn->flags & TX_USE_PX_CONN) {
1392 h = "Proxy-Authorization";
1393 len = strlen(h);
1394 } else {
1395 h = "Authorization";
1396 len = strlen(h);
1397 }
1398
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1399 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]1400 return 0;
1401
1402 h = ctx.line + ctx.val;
1403
1404 p = memchr(h, ' ', ctx.vlen);
1405 if (!p || p == h)
1406 return 0;
1407
1408 chunk_initlen(&auth_method, h, 0, p-h);
1409 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1410
1411 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1412
1413 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1414 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1415
1416 if (len < 0)
1417 return 0;
1418
1419
1420 get_http_auth_buff[len] = '\0';
1421
1422 p = strchr(get_http_auth_buff, ':');
1423
1424 if (!p)
1425 return 0;
1426
1427 txn->auth.user = get_http_auth_buff;
1428 *p = '\0';
1429 txn->auth.pass = p+1;
1430
1431 txn->auth.method = HTTP_AUTH_BASIC;
1432 return 1;
1433 }
1434
1435 return 0;
1436}
1437
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1438
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1439/*
1440 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1441 * depending on the initial msg->msg_state. The caller is responsible for
1442 * ensuring that the message does not wrap. The function can be preempted
1443 * everywhere when data are missing and recalled at the exact same location
1444 * with no information loss. The message may even be realigned between two
1445 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1446 * 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]1447 * fields. Note that msg->sol will be initialized after completing the first
1448 * state, so that none of the msg pointers has to be initialized prior to the
1449 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1450 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1451void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1452{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1453 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1454 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1455 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1456
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1457 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1458 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1459 ptr = buf->p + msg->next;
1460 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1461
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1462 if (unlikely(ptr >= end))
1463 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1464
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1465 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1466 /*
1467 * First, states that are specific to the response only.
1468 * We check them first so that request and headers are
1469 * closer to each other (accessed more often).
1470 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1471 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1472 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1473 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1474 /* we have a start of message, but we have to check
1475 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1476 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1477 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1478 if (unlikely(ptr != buf->p)) {
1479 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1480 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1481 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1482 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1483 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1484 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1485 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1486 hdr_idx_init(idx);
1487 state = HTTP_MSG_RPVER;
1488 goto http_msg_rpver;
1489 }
1490
1491 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1492 goto http_msg_invalid;
1493
1494 if (unlikely(*ptr == '\n'))
1495 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1496 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1497 /* stop here */
1498
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1499 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1500 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1501 EXPECT_LF_HERE(ptr, http_msg_invalid);
1502 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1503 /* stop here */
1504
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1505 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1506 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1507 case HTTP_MSG_RPVER_SP:
1508 case HTTP_MSG_RPCODE:
1509 case HTTP_MSG_RPCODE_SP:
1510 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1511 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1512 state, ptr, end,
1513 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1514 if (unlikely(!ptr))
1515 return;
1516
1517 /* we have a full response and we know that we have either a CR
1518 * or an LF at <ptr>.
1519 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1520 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1521
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1522 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1523 if (likely(*ptr == '\r'))
1524 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1525 goto http_msg_rpline_end;
1526
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1527 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1528 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1529 /* msg->sol must point to the first of CR or LF. */
1530 EXPECT_LF_HERE(ptr, http_msg_invalid);
1531 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1532 /* stop here */
1533
1534 /*
1535 * Second, states that are specific to the request only
1536 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1537 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1538 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1539 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1540 /* we have a start of message, but we have to check
1541 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1542 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1543 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1544 if (likely(ptr != buf->p)) {
1545 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1546 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1547 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1548 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1549 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1550 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1551 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1552 state = HTTP_MSG_RQMETH;
1553 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1554 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1555
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1556 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1557 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1558
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1559 if (unlikely(*ptr == '\n'))
1560 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1561 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1562 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1563
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1564 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1565 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1566 EXPECT_LF_HERE(ptr, http_msg_invalid);
1567 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1568 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1569
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1570 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1571 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1572 case HTTP_MSG_RQMETH_SP:
1573 case HTTP_MSG_RQURI:
1574 case HTTP_MSG_RQURI_SP:
1575 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1576 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1577 state, ptr, end,
1578 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1579 if (unlikely(!ptr))
1580 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1581
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1582 /* we have a full request and we know that we have either a CR
1583 * or an LF at <ptr>.
1584 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1585 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1586
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1587 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1588 if (likely(*ptr == '\r'))
1589 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1590 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1591
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1592 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1593 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1594 /* check for HTTP/0.9 request : no version information available.
1595 * msg->sol must point to the first of CR or LF.
1596 */
1597 if (unlikely(msg->sl.rq.v_l == 0))
1598 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1599
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1600 EXPECT_LF_HERE(ptr, http_msg_invalid);
1601 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1602 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1603
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1604 /*
1605 * Common states below
1606 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1607 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1608 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1609 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1610 if (likely(!HTTP_IS_CRLF(*ptr))) {
1611 goto http_msg_hdr_name;
1612 }
1613
1614 if (likely(*ptr == '\r'))
1615 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1616 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1617
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1618 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1619 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1620 /* assumes msg->sol points to the first char */
1621 if (likely(HTTP_IS_TOKEN(*ptr)))
1622 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1623
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1624 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1625 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]1626
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1627 if (likely(msg->err_pos < -1) || *ptr == '\n')
1628 goto http_msg_invalid;
1629
1630 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1631 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1632
1633 /* and we still accept this non-token character */
1634 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1635
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1636 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1637 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1638 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1639 if (likely(HTTP_IS_SPHT(*ptr)))
1640 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]1641
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1642 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1643 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1644
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1645 if (likely(!HTTP_IS_CRLF(*ptr))) {
1646 goto http_msg_hdr_val;
1647 }
1648
1649 if (likely(*ptr == '\r'))
1650 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1651 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1652
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1653 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1654 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1655 EXPECT_LF_HERE(ptr, http_msg_invalid);
1656 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]1657
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1658 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1659 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1660 if (likely(HTTP_IS_SPHT(*ptr))) {
1661 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1662 for (; buf->p + msg->sov < ptr; msg->sov++)
1663 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1664 goto http_msg_hdr_l1_sp;
1665 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1666 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1667 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1668 goto http_msg_complete_header;
1669
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1670 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1671 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1672 /* assumes msg->sol points to the first char, and msg->sov
1673 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1674 */
1675 if (likely(!HTTP_IS_CRLF(*ptr)))
1676 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1677
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1678 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1679 /* Note: we could also copy eol into ->eoh so that we have the
1680 * real header end in case it ends with lots of LWS, but is this
1681 * really needed ?
1682 */
1683 if (likely(*ptr == '\r'))
1684 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1685 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1686
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1687 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1688 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1689 EXPECT_LF_HERE(ptr, http_msg_invalid);
1690 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]1691
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1692 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1693 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1694 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1695 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1696 for (; buf->p + msg->eol < ptr; msg->eol++)
1697 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1698 goto http_msg_hdr_val;
1699 }
1700 http_msg_complete_header:
1701 /*
1702 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1703 * Assumes msg->sol points to the first char, msg->sov points
1704 * to the first character of the value and msg->eol to the
1705 * first CR or LF so we know how the line ends. We insert last
1706 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1707 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1708 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1709 idx, idx->tail) < 0))
1710 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1711
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1712 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1713 if (likely(!HTTP_IS_CRLF(*ptr))) {
1714 goto http_msg_hdr_name;
1715 }
1716
1717 if (likely(*ptr == '\r'))
1718 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1719 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1720
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1721 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1722 http_msg_last_lf:
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1723 /* Assumes msg->sol points to the first of either CR or LF.
1724 * Sets ->sov and ->next to the total header length, ->eoh to
1725 * the last CRLF, and ->eol to the last CRLF length (1 or 2).
1726 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1727 EXPECT_LF_HERE(ptr, http_msg_invalid);
1728 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1729 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1730 msg->eoh = msg->sol;
1731 msg->sol = 0;
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1732 msg->eol = msg->sov - msg->eoh;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1733 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1734 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1735
1736 case HTTP_MSG_ERROR:
1737 /* this may only happen if we call http_msg_analyser() twice with an error */
1738 break;
1739
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1740 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1741#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1742 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1743 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1744#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1745 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1746 }
1747 http_msg_ood:
1748 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1749 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1750 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1751 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1752
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1753 http_msg_invalid:
1754 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1755 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1756 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1757 return;
1758}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1759
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1760/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1761 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1762 * nothing is done and 1 is returned.
1763 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1764static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1765{
1766 int delta;
1767 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1768 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1769
1770 if (msg->sl.rq.v_l != 0)
1771 return 1;
1772
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1773 /* RFC 1945 allows only GET for HTTP/0.9 requests */
1774 if (txn->meth != HTTP_METH_GET)
1775 return 0;
1776
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1777 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1778 delta = 0;
1779
1780 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1781 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
1782 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1783 }
1784 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1785 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]1786 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1787 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1788 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1789 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1790 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1791 NULL, NULL);
1792 if (unlikely(!cur_end))
1793 return 0;
1794
1795 /* we have a full HTTP/1.0 request now and we know that
1796 * we have either a CR or an LF at <ptr>.
1797 */
1798 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1799 return 1;
1800}
1801
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1802/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1803 * and "keep-alive" values. If we already know that some headers may safely
1804 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1805 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1806 * - 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]1807 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1808 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1809 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1810 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1811 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1812 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1813void 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]1814{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1815 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1816 const char *hdr_val = "Connection";
1817 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1818
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1819 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1820 return;
1821
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1822 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1823 hdr_val = "Proxy-Connection";
1824 hdr_len = 16;
1825 }
1826
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1827 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1828 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1829 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]1830 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1831 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1832 if (to_del & 2)
1833 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1834 else
1835 txn->flags |= TX_CON_KAL_SET;
1836 }
1837 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1838 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1839 if (to_del & 1)
1840 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1841 else
1842 txn->flags |= TX_CON_CLO_SET;
1843 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1844 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1845 txn->flags |= TX_HDR_CONN_UPG;
1846 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1847 }
1848
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1849 txn->flags |= TX_HDR_CONN_PRS;
1850 return;
1851}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1852
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1853/* Apply desired changes on the Connection: header. Values may be removed and/or
1854 * added depending on the <wanted> flags, which are exclusively composed of
1855 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1856 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1857 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1858void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1859{
1860 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1861 const char *hdr_val = "Connection";
1862 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1863
1864 ctx.idx = 0;
1865
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1866
1867 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1868 hdr_val = "Proxy-Connection";
1869 hdr_len = 16;
1870 }
1871
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1872 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1873 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]1874 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1875 if (wanted & TX_CON_KAL_SET)
1876 txn->flags |= TX_CON_KAL_SET;
1877 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1878 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1879 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1880 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1881 if (wanted & TX_CON_CLO_SET)
1882 txn->flags |= TX_CON_CLO_SET;
1883 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1884 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1885 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1886 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1887
1888 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1889 return;
1890
1891 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1892 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1893 hdr_val = "Connection: close";
1894 hdr_len = 17;
1895 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1896 hdr_val = "Proxy-Connection: close";
1897 hdr_len = 23;
1898 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1899 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1900 }
1901
1902 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1903 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1904 hdr_val = "Connection: keep-alive";
1905 hdr_len = 22;
1906 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1907 hdr_val = "Proxy-Connection: keep-alive";
1908 hdr_len = 28;
1909 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1910 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1911 }
1912 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1913}
1914
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]1915/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to
1916 * the first byte of data after the chunk size, so that we know we can forward
1917 * exactly msg->next bytes. msg->sol contains the exact number of bytes forming
1918 * the chunk size. That way it is always possible to differentiate between the
1919 * start of the body and the start of the data.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1920 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1921 * 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]1922 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1923static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1924{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1925 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1926 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1927 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1928 const char *end = buf->data + buf->size;
1929 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1930 unsigned int chunk = 0;
1931
1932 /* The chunk size is in the following form, though we are only
1933 * interested in the size and CRLF :
1934 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1935 */
1936 while (1) {
1937 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1938 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1939 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1940 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1941 if (c < 0) /* not a hex digit anymore */
1942 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1943 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1944 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1945 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1946 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1947 chunk = (chunk << 4) + c;
1948 }
1949
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1950 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1951 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1952 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1953
1954 while (http_is_spht[(unsigned char)*ptr]) {
1955 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1956 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1957 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1958 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1959 }
1960
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1961 /* Up to there, we know that at least one byte is present at *ptr. Check
1962 * for the end of chunk size.
1963 */
1964 while (1) {
1965 if (likely(HTTP_IS_CRLF(*ptr))) {
1966 /* we now have a CR or an LF at ptr */
1967 if (likely(*ptr == '\r')) {
1968 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1969 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1970 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1971 return 0;
1972 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1973
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1974 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1975 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1976 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1977 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1978 /* done */
1979 break;
1980 }
1981 else if (*ptr == ';') {
1982 /* chunk extension, ends at next CRLF */
1983 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1984 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1985 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1986 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1987
1988 while (!HTTP_IS_CRLF(*ptr)) {
1989 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1990 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1991 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1992 return 0;
1993 }
1994 /* we have a CRLF now, loop above */
1995 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1996 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1997 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1998 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1999 }
2000
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2001 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2002 * which may or may not be present. We save that into ->next,
2003 * and the number of bytes parsed into msg->sol.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2004 */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2005 msg->sol = ptr - ptr_old;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2006 if (unlikely(ptr < ptr_old))
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2007 msg->sol += buf->size;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2008 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2009 msg->chunk_len = chunk;
2010 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2011 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2012 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2013 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2014 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2015 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2016}
2017
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2018/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2019 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2020 * the trailers is found, it is automatically scheduled to be forwarded,
2021 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
2022 * If not enough data are available, the function does not change anything
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2023 * except maybe msg->next if it could parse some lines, and returns zero.
2024 * If a parse error is encountered, the function returns < 0 and does not
2025 * change anything except maybe msg->next. Note that the message must
2026 * already be in HTTP_MSG_TRAILERS state before calling this function,
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2027 * which implies that all non-trailers data have already been scheduled for
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2028 * forwarding, and that msg->next exactly matches the length of trailers
2029 * already parsed and not forwarded. It is also important to note that this
2030 * function is designed to be able to parse wrapped headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2031 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2032static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2033{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2034 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2035
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2036 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2037 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2038 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2039 const char *ptr = b_ptr(buf, msg->next);
2040 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2041 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2042
2043 /* scan current line and stop at LF or CRLF */
2044 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2045 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2046 return 0;
2047
2048 if (*ptr == '\n') {
2049 if (!p1)
2050 p1 = ptr;
2051 p2 = ptr;
2052 break;
2053 }
2054
2055 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2056 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2057 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2058 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2059 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2060 p1 = ptr;
2061 }
2062
2063 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2064 if (ptr >= buf->data + buf->size)
2065 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2066 }
2067
2068 /* after LF; point to beginning of next line */
2069 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2070 if (p2 >= buf->data + buf->size)
2071 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2072
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2073 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2074 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2075 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2076
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2077 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2078 /* LF/CRLF at beginning of line => end of trailers at p2.
2079 * Everything was scheduled for forwarding, there's nothing
2080 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]2081 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2082 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2083 msg->msg_state = HTTP_MSG_DONE;
2084 return 1;
2085 }
2086 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2087 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2088 }
2089}
2090
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2091/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF
2092 * or a possible LF alone at the end of a chunk. It automatically adjusts
2093 * msg->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2094 * 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]2095 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
2096 * not enough data are available, the function does not change anything and
2097 * returns zero. If a parse error is encountered, the function returns < 0 and
2098 * does not change anything. Note: this function is designed to parse wrapped
2099 * CRLF at the end of the buffer.
2100 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2101static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2102{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2103 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2104 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2105 int bytes;
2106
2107 /* NB: we'll check data availabilty at the end. It's not a
2108 * problem because whatever we match first will be checked
2109 * against the correct length.
2110 */
2111 bytes = 1;
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2112 ptr = b_ptr(buf, msg->next);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2113 if (*ptr == '\r') {
2114 bytes++;
2115 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2116 if (ptr >= buf->data + buf->size)
2117 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2118 }
2119
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2120 if (msg->next + bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2121 return 0;
2122
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2123 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2124 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2125 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2126 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2127
2128 ptr++;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2129 if (unlikely(ptr >= buf->data + buf->size))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2130 ptr = buf->data;
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2131 /* Advance ->next to allow the CRLF to be forwarded */
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2132 msg->next += bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2133 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
2134 return 1;
2135}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2136
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2137/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2138 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2139 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2140 * Unparsable qvalues return 1000 as "q=1.000".
2141 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2142int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2143{
2144 int q = 1000;
2145
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]2146 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2147 goto out;
2148 q = (*qvalue++ - '0') * 1000;
2149
2150 if (*qvalue++ != '.')
2151 goto out;
2152
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]2153 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2154 goto out;
2155 q += (*qvalue++ - '0') * 100;
2156
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]2157 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2158 goto out;
2159 q += (*qvalue++ - '0') * 10;
2160
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]2161 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2162 goto out;
2163 q += (*qvalue++ - '0') * 1;
2164 out:
2165 if (q > 1000)
2166 q = 1000;
Willy Tarreau38b3aa52014-04-22 23:32:05 +0200[diff] [blame]2167 if (end)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2168 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2169 return q;
2170}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2171
2172/*
2173 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2174 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2175int select_compression_request_header(struct session *s, struct buffer *req)
2176{
2177 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2178 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2179 struct hdr_ctx ctx;
2180 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2181 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2182
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2183 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
2184 * 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]2185 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
2186 */
2187 ctx.idx = 0;
2188 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
2189 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2190 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
2191 (ctx.vlen < 31 ||
2192 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
2193 ctx.line[ctx.val + 30] < '6' ||
2194 (ctx.line[ctx.val + 30] == '6' &&
2195 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
2196 s->comp_algo = NULL;
2197 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2198 }
2199
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2200 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2201 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2202 int best_q = 0;
2203
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2204 ctx.idx = 0;
2205 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2206 const char *qval;
2207 int q;
2208 int toklen;
2209
2210 /* try to isolate the token from the optional q-value */
2211 toklen = 0;
2212 while (toklen < ctx.vlen && http_is_token[(unsigned char)*(ctx.line + ctx.val + toklen)])
2213 toklen++;
2214
2215 qval = ctx.line + ctx.val + toklen;
2216 while (1) {
2217 while (qval < ctx.line + ctx.val + ctx.vlen && http_is_lws[(unsigned char)*qval])
2218 qval++;
2219
2220 if (qval >= ctx.line + ctx.val + ctx.vlen || *qval != ';') {
2221 qval = NULL;
2222 break;
2223 }
2224 qval++;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2225
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2226 while (qval < ctx.line + ctx.val + ctx.vlen && http_is_lws[(unsigned char)*qval])
2227 qval++;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2228
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2229 if (qval >= ctx.line + ctx.val + ctx.vlen) {
2230 qval = NULL;
2231 break;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2232 }
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2233 if (strncmp(qval, "q=", MIN(ctx.line + ctx.val + ctx.vlen - qval, 2)) == 0)
2234 break;
2235
2236 while (qval < ctx.line + ctx.val + ctx.vlen && *qval != ';')
2237 qval++;
2238 }
2239
2240 /* 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]2241 q = qval ? parse_qvalue(qval + 2, NULL) : 1000;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2242
2243 if (q <= best_q)
2244 continue;
2245
2246 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
2247 if (*(ctx.line + ctx.val) == '*' ||
2248 word_match(ctx.line + ctx.val, toklen, comp_algo->name, comp_algo->name_len)) {
2249 s->comp_algo = comp_algo;
2250 best_q = q;
2251 break;
2252 }
2253 }
2254 }
2255 }
2256
2257 /* remove all occurrences of the header when "compression offload" is set */
2258 if (s->comp_algo) {
2259 if ((s->be->comp && s->be->comp->offload) || (s->fe->comp && s->fe->comp->offload)) {
2260 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2261 ctx.idx = 0;
2262 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2263 http_remove_header2(msg, &txn->hdr_idx, &ctx);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2264 }
2265 }
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2266 return 1;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2267 }
2268
2269 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2270 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2271 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2272 if (comp_algo->add_data == identity_add_data) {
2273 s->comp_algo = comp_algo;
2274 return 1;
2275 }
2276 }
2277 }
2278
2279 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2280 return 0;
2281}
2282
2283/*
2284 * Selects a comression algorithm depending of the server response.
2285 */
2286int select_compression_response_header(struct session *s, struct buffer *res)
2287{
2288 struct http_txn *txn = &s->txn;
2289 struct http_msg *msg = &txn->rsp;
2290 struct hdr_ctx ctx;
2291 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2292
2293 /* no common compression algorithm was found in request header */
2294 if (s->comp_algo == NULL)
2295 goto fail;
2296
2297 /* HTTP < 1.1 should not be compressed */
Willy Tarreau72575502013-12-24 14:41:35 +0100[diff] [blame]2298 if (!(msg->flags & HTTP_MSGF_VER_11) || !(txn->req.flags & HTTP_MSGF_VER_11))
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2299 goto fail;
2300
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2301 /* 200 only */
2302 if (txn->status != 200)
2303 goto fail;
2304
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2305 /* Content-Length is null */
2306 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2307 goto fail;
2308
2309 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2310 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2311 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2312 goto fail;
2313
Willy Tarreau56e9ffa2013-01-05 16:20:35 +0100[diff] [blame]2314 /* no compression when Cache-Control: no-transform is present in the message */
2315 ctx.idx = 0;
2316 while (http_find_header2("Cache-Control", 13, res->p, &txn->hdr_idx, &ctx)) {
2317 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12))
2318 goto fail;
2319 }
2320
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2321 comp_type = NULL;
2322
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2323 /* we don't want to compress multipart content-types, nor content-types that are
2324 * not listed in the "compression type" directive if any. If no content-type was
2325 * found but configuration requires one, we don't compress either. Backend has
2326 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2327 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2328 ctx.idx = 0;
2329 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2330 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2331 goto fail;
2332
2333 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
2334 (s->fe->comp && (comp_type = s->fe->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2335 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2336 if (ctx.vlen >= comp_type->name_len &&
2337 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2338 /* this Content-Type should be compressed */
2339 break;
2340 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2341 /* this Content-Type should not be compressed */
2342 if (comp_type == NULL)
2343 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2344 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2345 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2346 else { /* no content-type header */
2347 if ((s->be->comp && s->be->comp->types) || (s->fe->comp && s->fe->comp->types))
2348 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2349 }
2350
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2351 /* limit compression rate */
2352 if (global.comp_rate_lim > 0)
2353 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2354 goto fail;
2355
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2356 /* limit cpu usage */
2357 if (idle_pct < compress_min_idle)
2358 goto fail;
2359
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2360 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2361 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2362 goto fail;
2363
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2364 s->flags |= SN_COMP_READY;
2365
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2366 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2367 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2368 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2369 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2370
2371 /* add Transfer-Encoding header */
2372 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2373 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2374
2375 /*
2376 * Add Content-Encoding header when it's not identity encoding.
2377 * RFC 2616 : Identity encoding: This content-coding is used only in the
2378 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2379 * header.
2380 */
2381 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2382 trash.len = 18;
2383 memcpy(trash.str, "Content-Encoding: ", trash.len);
2384 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2385 trash.len += s->comp_algo->name_len;
2386 trash.str[trash.len] = '\0';
2387 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2388 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2389 return 1;
2390
2391fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2392 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2393 return 0;
2394}
2395
Willy Tarreau2e47a3a2014-09-30 18:44:22 +0200[diff] [blame]2396void http_adjust_conn_mode(struct session *s, struct http_txn *txn, struct http_msg *msg)
2397{
2398 int tmp = TX_CON_WANT_KAL;
2399
2400 if (!((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
2401 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
2402 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
2403 tmp = TX_CON_WANT_TUN;
2404
2405 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
2406 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2407 tmp = TX_CON_WANT_TUN;
2408 }
2409
2410 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
2411 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
2412 /* option httpclose + server_close => forceclose */
2413 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
2414 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2415 tmp = TX_CON_WANT_CLO;
2416 else
2417 tmp = TX_CON_WANT_SCL;
2418 }
2419
2420 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
2421 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
2422 tmp = TX_CON_WANT_CLO;
2423
2424 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2425 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2426
2427 if (!(txn->flags & TX_HDR_CONN_PRS) &&
2428 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
2429 /* parse the Connection header and possibly clean it */
2430 int to_del = 0;
2431 if ((msg->flags & HTTP_MSGF_VER_11) ||
2432 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
2433 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
2434 to_del |= 2; /* remove "keep-alive" */
2435 if (!(msg->flags & HTTP_MSGF_VER_11))
2436 to_del |= 1; /* remove "close" */
2437 http_parse_connection_header(txn, msg, to_del);
2438 }
2439
2440 /* check if client or config asks for explicit close in KAL/SCL */
2441 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2442 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2443 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
2444 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
2445 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
2446 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
2447 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2448}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2449
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2450/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2451 * processing can continue on next analysers, or zero if it either needs more
2452 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2453 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2454 * when it has nothing left to do, and may remove any analyser when it wants to
2455 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2456 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2457int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2458{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2459 /*
2460 * We will parse the partial (or complete) lines.
2461 * We will check the request syntax, and also join multi-line
2462 * headers. An index of all the lines will be elaborated while
2463 * parsing.
2464 *
2465 * For the parsing, we use a 28 states FSM.
2466 *
2467 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2468 * req->buf->p = beginning of request
2469 * req->buf->p + msg->eoh = end of processed headers / start of current one
2470 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2471 * msg->eol = end of current header or line (LF or CRLF)
2472 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2473 *
2474 * At end of parsing, we may perform a capture of the error (if any), and
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]2475 * we will set a few fields (txn->meth, sn->flags/SN_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2476 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2477 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2478 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2479
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2480 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2481 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2482 struct http_txn *txn = &s->txn;
2483 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2484 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2485
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2486 DPRINTF(stderr,"[%u] %s: session=%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]2487 now_ms, __FUNCTION__,
2488 s,
2489 req,
2490 req->rex, req->wex,
2491 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2492 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2493 req->analysers);
2494
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2495 /* we're speaking HTTP here, so let's speak HTTP to the client */
2496 s->srv_error = http_return_srv_error;
2497
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2498 /* There's a protected area at the end of the buffer for rewriting
2499 * purposes. We don't want to start to parse the request if the
2500 * protected area is affected, because we may have to move processed
2501 * data later, which is much more complicated.
2502 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2503 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2504 if (txn->flags & TX_NOT_FIRST) {
2505 if (unlikely(!channel_reserved(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2506 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2507 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2508 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2509 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2510 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2511 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2512 return 0;
2513 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2514 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2515 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2516 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2517 }
2518
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2519 /* Note that we have the same problem with the response ; we
2520 * may want to send a redirect, error or anything which requires
2521 * some spare space. So we'll ensure that we have at least
2522 * maxrewrite bytes available in the response buffer before
2523 * processing that one. This will only affect pipelined
2524 * keep-alive requests.
2525 */
2526 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2527 unlikely(!channel_reserved(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2528 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2529 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2530 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2531 if (s->rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2532 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2533 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2534 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2535 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2536 s->rep->flags |= CF_WAKE_WRITE;
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2537 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2538 return 0;
2539 }
2540 }
2541
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2542 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2543 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2544 }
2545
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2546 /* 1: we might have to print this header in debug mode */
2547 if (unlikely((global.mode & MODE_DEBUG) &&
2548 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau8767b132014-10-21 19:36:09 +0200[diff] [blame]2549 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2550 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2551
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2552 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2553 /* this is a bit complex : in case of error on the request line,
2554 * we know that rq.l is still zero, so we display only the part
2555 * up to the end of the line (truncated by debug_hdr).
2556 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2557 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2558 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2559
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2560 sol += hdr_idx_first_pos(&txn->hdr_idx);
2561 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2562
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2563 while (cur_idx) {
2564 eol = sol + txn->hdr_idx.v[cur_idx].len;
2565 debug_hdr("clihdr", s, sol, eol);
2566 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2567 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2568 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2569 }
2570
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2571
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2572 /*
2573 * Now we quickly check if we have found a full valid request.
2574 * If not so, we check the FD and buffer states before leaving.
2575 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2576 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2577 * requests are checked first. When waiting for a second request
2578 * on a keep-alive session, if we encounter and error, close, t/o,
2579 * we note the error in the session flags but don't set any state.
2580 * Since the error will be noted there, it will not be counted by
2581 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2582 * Last, we may increase some tracked counters' http request errors on
2583 * the cases that are deliberately the client's fault. For instance,
2584 * a timeout or connection reset is not counted as an error. However
2585 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2586 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2587
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2588 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2589 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2590 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2591 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2592 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2593 session_inc_http_req_ctr(s);
2594 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2595 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2596 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2597 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2598
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2599 /* 1: Since we are in header mode, if there's no space
2600 * left for headers, we won't be able to free more
2601 * later, so the session will never terminate. We
2602 * must terminate it now.
2603 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2604 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2605 /* FIXME: check if URI is set and return Status
2606 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2607 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2608 session_inc_http_req_ctr(s);
2609 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2610 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2611 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2612 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2613 goto return_bad_req;
2614 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2615
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2616 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2617 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2618 if (!(s->flags & SN_ERR_MASK))
2619 s->flags |= SN_ERR_CLICL;
2620
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2621 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2622 goto failed_keep_alive;
2623
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2624 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2625 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2626 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2627 session_inc_http_err_ctr(s);
2628 }
2629
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2630 txn->status = 400;
2631 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2632 msg->msg_state = HTTP_MSG_ERROR;
2633 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2634
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2635 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2636 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2637 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2638 if (s->listener->counters)
2639 s->listener->counters->failed_req++;
2640
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2641 if (!(s->flags & SN_FINST_MASK))
2642 s->flags |= SN_FINST_R;
2643 return 0;
2644 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2645
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2646 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2647 else if (req->flags & CF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2648 if (!(s->flags & SN_ERR_MASK))
2649 s->flags |= SN_ERR_CLITO;
2650
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2651 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2652 goto failed_keep_alive;
2653
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2654 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2655 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2656 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2657 session_inc_http_err_ctr(s);
2658 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2659 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2660 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2661 msg->msg_state = HTTP_MSG_ERROR;
2662 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2663
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2664 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2665 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2666 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2667 if (s->listener->counters)
2668 s->listener->counters->failed_req++;
2669
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2670 if (!(s->flags & SN_FINST_MASK))
2671 s->flags |= SN_FINST_R;
2672 return 0;
2673 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2674
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2675 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2676 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2677 if (!(s->flags & SN_ERR_MASK))
2678 s->flags |= SN_ERR_CLICL;
2679
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2680 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2681 goto failed_keep_alive;
2682
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2683 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2684 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2685 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2686 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2687 msg->msg_state = HTTP_MSG_ERROR;
2688 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2689
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2690 session_inc_http_err_ctr(s);
2691 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2692 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2693 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2694 if (s->listener->counters)
2695 s->listener->counters->failed_req++;
2696
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2697 if (!(s->flags & SN_FINST_MASK))
2698 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2699 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2700 }
2701
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2702 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2703 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2704 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2705#ifdef TCP_QUICKACK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]2706 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i && objt_conn(s->req->prod->end) && conn_ctrl_ready(__objt_conn(s->req->prod->end))) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2707 /* We need more data, we have to re-enable quick-ack in case we
2708 * previously disabled it, otherwise we might cause the client
2709 * to delay next data.
2710 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2711 setsockopt(__objt_conn(s->req->prod->end)->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2712 }
2713#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2714
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2715 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2716 /* If the client starts to talk, let's fall back to
2717 * request timeout processing.
2718 */
2719 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2720 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2721 }
2722
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2723 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2724 if (!tick_isset(req->analyse_exp)) {
2725 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2726 (txn->flags & TX_WAIT_NEXT_RQ) &&
2727 tick_isset(s->be->timeout.httpka))
2728 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2729 else
2730 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2731 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2732
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2733 /* we're not ready yet */
2734 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2735
2736 failed_keep_alive:
2737 /* Here we process low-level errors for keep-alive requests. In
2738 * short, if the request is not the first one and it experiences
2739 * a timeout, read error or shutdown, we just silently close so
2740 * that the client can try again.
2741 */
2742 txn->status = 0;
2743 msg->msg_state = HTTP_MSG_RQBEFORE;
2744 req->analysers = 0;
2745 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2746 s->logs.level = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2747 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2748 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2749 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2750 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2751
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2752 /* OK now we have a complete HTTP request with indexed headers. Let's
2753 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2754 * 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]2755 * 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]2756 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2757 * byte after the last LF. msg->sov points to the first byte of data.
2758 * msg->eol cannot be trusted because it may have been left uninitialized
2759 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2760 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2761
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2762 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2763 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2764
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2765 if (txn->flags & TX_WAIT_NEXT_RQ) {
2766 /* kill the pending keep-alive timeout */
2767 txn->flags &= ~TX_WAIT_NEXT_RQ;
2768 req->analyse_exp = TICK_ETERNITY;
2769 }
2770
2771
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2772 /* Maybe we found in invalid header name while we were configured not
2773 * to block on that, so we have to capture it now.
2774 */
2775 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2776 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2777
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2778 /*
2779 * 1: identify the method
2780 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2781 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2782
2783 /* we can make use of server redirect on GET and HEAD */
2784 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2785 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2786
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2787 /*
2788 * 2: check if the URI matches the monitor_uri.
2789 * We have to do this for every request which gets in, because
2790 * the monitor-uri is defined by the frontend.
2791 */
2792 if (unlikely((s->fe->monitor_uri_len != 0) &&
2793 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2794 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2795 s->fe->monitor_uri,
2796 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2797 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2798 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2799 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2800 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2801
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2802 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2803 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2804
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2805 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2806 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2807 int ret = acl_exec_cond(cond, s->fe, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2808
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2809 ret = acl_pass(ret);
2810 if (cond->pol == ACL_COND_UNLESS)
2811 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2812
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2813 if (ret) {
2814 /* we fail this request, let's return 503 service unavail */
2815 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2816 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2817 if (!(s->flags & SN_ERR_MASK))
2818 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2819 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2820 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2821 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2822
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2823 /* nothing to fail, let's reply normaly */
2824 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2825 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2826 if (!(s->flags & SN_ERR_MASK))
2827 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2828 goto return_prx_cond;
2829 }
2830
2831 /*
2832 * 3: Maybe we have to copy the original REQURI for the logs ?
2833 * Note: we cannot log anymore if the request has been
2834 * classified as invalid.
2835 */
2836 if (unlikely(s->logs.logwait & LW_REQ)) {
2837 /* we have a complete HTTP request that we must log */
2838 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2839 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2840
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2841 if (urilen >= REQURI_LEN)
2842 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2843 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2844 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2845
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2846 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2847 s->do_log(s);
2848 } else {
2849 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2850 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2851 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2852
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2853 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2854 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2855 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2856
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2857 /* ... and check if the request is HTTP/1.1 or above */
2858 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2859 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2860 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2861 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2862 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2863
2864 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2865 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]2866
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2867 /* if the frontend has "option http-use-proxy-header", we'll check if
2868 * we have what looks like a proxied connection instead of a connection,
2869 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2870 * Note that this is *not* RFC-compliant, however browsers and proxies
2871 * happen to do that despite being non-standard :-(
2872 * We consider that a request not beginning with either '/' or '*' is
2873 * a proxied connection, which covers both "scheme://location" and
2874 * CONNECT ip:port.
2875 */
2876 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2877 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2878 txn->flags |= TX_USE_PX_CONN;
2879
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2880 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2881 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2882
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2883 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2884 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2885 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2886 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2887
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2888 /* 6: determine the transfer-length.
2889 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2890 * the presence of a message-body in a REQUEST and its transfer length
2891 * must be determined that way (in order of precedence) :
2892 * 1. The presence of a message-body in a request is signaled by the
2893 * inclusion of a Content-Length or Transfer-Encoding header field
2894 * in the request's header fields. When a request message contains
2895 * both a message-body of non-zero length and a method that does
2896 * not define any semantics for that request message-body, then an
2897 * origin server SHOULD either ignore the message-body or respond
2898 * with an appropriate error message (e.g., 413). A proxy or
2899 * gateway, when presented the same request, SHOULD either forward
2900 * the request inbound with the message- body or ignore the
2901 * message-body when determining a response.
2902 *
2903 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2904 * and the "chunked" transfer-coding (Section 6.2) is used, the
2905 * transfer-length is defined by the use of this transfer-coding.
2906 * If a Transfer-Encoding header field is present and the "chunked"
2907 * transfer-coding is not present, the transfer-length is defined
2908 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2909 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2910 * 3. If a Content-Length header field is present, its decimal value in
2911 * OCTETs represents both the entity-length and the transfer-length.
2912 * If a message is received with both a Transfer-Encoding header
2913 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2914 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2915 * 4. By the server closing the connection. (Closing the connection
2916 * cannot be used to indicate the end of a request body, since that
2917 * would leave no possibility for the server to send back a response.)
2918 *
2919 * Whenever a transfer-coding is applied to a message-body, the set of
2920 * transfer-codings MUST include "chunked", unless the message indicates
2921 * it is terminated by closing the connection. When the "chunked"
2922 * transfer-coding is used, it MUST be the last transfer-coding applied
2923 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2924 */
2925
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2926 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2927 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2928 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2929 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2930 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2931 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2932 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2933 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2934 /* bad transfer-encoding (chunked followed by something else) */
2935 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2936 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2937 break;
2938 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2939 }
2940
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2941 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2942 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2943 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2944 signed long long cl;
2945
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2946 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2947 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2948 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2949 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2950
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2951 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2952 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2953 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2954 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2955
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2956 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2957 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2958 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2959 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2960
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2961 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2962 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2963 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2964 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2965
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2966 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2967 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2968 }
2969
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2970 /* bodyless requests have a known length */
2971 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2972 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2973
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]2974 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
2975 * only change if both the request and the config reference something else.
2976 * Option httpclose by itself sets tunnel mode where headers are mangled.
2977 * However, if another mode is set, it will affect it (eg: server-close/
2978 * keep-alive + httpclose = close). Note that we avoid to redo the same work
2979 * if FE and BE have the same settings (common). The method consists in
2980 * checking if options changed between the two calls (implying that either
2981 * one is non-null, or one of them is non-null and we are there for the first
2982 * time.
2983 */
2984 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreau2e47a3a2014-09-30 18:44:22 +0200[diff] [blame]2985 ((s->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
2986 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]2987
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2988 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2989 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2990 req->analyse_exp = TICK_ETERNITY;
2991 return 1;
2992
2993 return_bad_req:
2994 /* We centralize bad requests processing here */
2995 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2996 /* we detected a parsing error. We want to archive this request
2997 * in the dedicated proxy area for later troubleshooting.
2998 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2999 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3000 }
3001
3002 txn->req.msg_state = HTTP_MSG_ERROR;
3003 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3004 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3005
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3006 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3007 if (s->listener->counters)
3008 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3009
3010 return_prx_cond:
3011 if (!(s->flags & SN_ERR_MASK))
3012 s->flags |= SN_ERR_PRXCOND;
3013 if (!(s->flags & SN_FINST_MASK))
3014 s->flags |= SN_FINST_R;
3015
3016 req->analysers = 0;
3017 req->analyse_exp = TICK_ETERNITY;
3018 return 0;
3019}
3020
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3021
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3022/* This function prepares an applet to handle the stats. It can deal with the
3023 * "100-continue" expectation, check that admin rules are met for POST requests,
3024 * and program a response message if something was unexpected. It cannot fail
3025 * 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]3026 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3027 * s->target which is supposed to already point to the stats applet. The caller
3028 * is expected to have already assigned an appctx to the session.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3029 */
3030int http_handle_stats(struct session *s, struct channel *req)
3031{
3032 struct stats_admin_rule *stats_admin_rule;
3033 struct stream_interface *si = s->rep->prod;
3034 struct http_txn *txn = &s->txn;
3035 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3036 struct uri_auth *uri_auth = s->be->uri_auth;
3037 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3038 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3039
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3040 appctx = si_appctx(si);
3041 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3042 appctx->st1 = appctx->st2 = 0;
3043 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3044 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3045 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn.meth != HTTP_METH_HEAD))
3046 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3047
3048 uri = msg->chn->buf->p + msg->sl.rq.u;
3049 lookup = uri + uri_auth->uri_len;
3050
3051 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3052 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3053 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3054 break;
3055 }
3056 }
3057
3058 if (uri_auth->refresh) {
3059 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3060 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3061 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3062 break;
3063 }
3064 }
3065 }
3066
3067 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3068 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3069 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3070 break;
3071 }
3072 }
3073
3074 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3075 if (memcmp(h, ";st=", 4) == 0) {
3076 int i;
3077 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3078 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3079 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3080 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3081 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3082 break;
3083 }
3084 }
3085 break;
3086 }
3087 }
3088
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3089 appctx->ctx.stats.scope_str = 0;
3090 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3091 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3092 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3093 int itx = 0;
3094 const char *h2;
3095 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3096 const char *err;
3097
3098 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3099 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3100 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3101 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3102 itx++;
3103 h++;
3104 }
3105
3106 if (itx > STAT_SCOPE_TXT_MAXLEN)
3107 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3108 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3109
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3110 /* 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]3111 memcpy(scope_txt, h2, itx);
3112 scope_txt[itx] = '\0';
3113 err = invalid_char(scope_txt);
3114 if (err) {
3115 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3116 appctx->ctx.stats.scope_str = 0;
3117 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3118 }
3119 break;
3120 }
3121 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3122
3123 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3124 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3125 int ret = 1;
3126
3127 if (stats_admin_rule->cond) {
3128 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
3129 ret = acl_pass(ret);
3130 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3131 ret = !ret;
3132 }
3133
3134 if (ret) {
3135 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3136 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3137 break;
3138 }
3139 }
3140
3141 /* Was the status page requested with a POST ? */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3142 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3143 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3144 /* we'll need the request body, possibly after sending 100-continue */
3145 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3146 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3147 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3148 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3149 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3150 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3151 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3152 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3153 else {
3154 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3155 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3156 }
3157
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3158 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3159 return 1;
3160}
3161
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3162/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3163 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3164 */
3165static inline void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
3166{
3167#ifdef IP_TOS
3168 if (from.ss_family == AF_INET)
3169 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3170#endif
3171#ifdef IPV6_TCLASS
3172 if (from.ss_family == AF_INET6) {
3173 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
3174 /* v4-mapped addresses need IP_TOS */
3175 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3176 else
3177 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3178 }
3179#endif
3180}
3181
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3182/* Returns the number of characters written to destination,
3183 * -1 on internal error and -2 if no replacement took place.
3184 */
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3185static int http_replace_header(struct my_regex *re, char *dst, uint dst_size, char *val, int len,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3186 const char *rep_str)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3187{
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3188 if (!regex_exec_match2(re, val, len, MAX_MATCH, pmatch))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3189 return -2;
3190
3191 return exp_replace(dst, dst_size, val, rep_str, pmatch);
3192}
3193
3194/* Returns the number of characters written to destination,
3195 * -1 on internal error and -2 if no replacement took place.
3196 */
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3197static int http_replace_value(struct my_regex *re, char *dst, uint dst_size, char *val, int len, char delim,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3198 const char *rep_str)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3199{
3200 char* p = val;
3201 char* dst_end = dst + dst_size;
3202 char* dst_p = dst;
3203
3204 for (;;) {
3205 char *p_delim;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3206
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3207 /* look for delim. */
3208 p_delim = p;
3209 while (p_delim < p + len && *p_delim != delim)
3210 p_delim++;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3211
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3212 if (regex_exec_match2(re, p, p_delim-p, MAX_MATCH, pmatch)) {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3213 int replace_n = exp_replace(dst_p, dst_end - dst_p, p, rep_str, pmatch);
3214
3215 if (replace_n < 0)
3216 return -1;
3217
3218 dst_p += replace_n;
3219 } else {
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3220 uint len = p_delim - p;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3221
3222 if (dst_p + len >= dst_end)
3223 return -1;
3224
3225 memcpy(dst_p, p, len);
3226 dst_p += len;
3227 }
3228
3229 if (dst_p >= dst_end)
3230 return -1;
3231
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3232 /* end of the replacements. */
3233 if (p_delim >= p + len)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3234 break;
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3235
3236 /* Next part. */
3237 *dst_p++ = delim;
3238 p = p_delim + 1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3239 }
3240
3241 return dst_p - dst;
3242}
3243
3244static int http_transform_header(struct session* s, struct http_msg *msg, const char* name, uint name_len,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3245 char* buf, struct hdr_idx* idx, struct list *fmt, struct my_regex *re,
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3246 struct hdr_ctx* ctx, int action)
3247{
3248 ctx->idx = 0;
3249
3250 while (http_find_full_header2(name, name_len, buf, idx, ctx)) {
3251 struct hdr_idx_elem *hdr = idx->v + ctx->idx;
3252 int delta;
3253 char* val = (char*)ctx->line + name_len + 2;
3254 char* val_end = (char*)ctx->line + hdr->len;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3255 char* reg_dst_buf;
3256 uint reg_dst_buf_size;
3257 int n_replaced;
3258
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3259 trash.len = build_logline(s, trash.str, trash.size, fmt);
3260
3261 if (trash.len >= trash.size - 1)
3262 return -1;
3263
3264 reg_dst_buf = trash.str + trash.len + 1;
3265 reg_dst_buf_size = trash.size - trash.len - 1;
3266
3267 switch (action) {
3268 case HTTP_REQ_ACT_REPLACE_VAL:
3269 case HTTP_RES_ACT_REPLACE_VAL:
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3270 n_replaced = http_replace_value(re, reg_dst_buf, reg_dst_buf_size, val, val_end-val, ',', trash.str);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3271 break;
3272 case HTTP_REQ_ACT_REPLACE_HDR:
3273 case HTTP_RES_ACT_REPLACE_HDR:
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3274 n_replaced = http_replace_header(re, reg_dst_buf, reg_dst_buf_size, val, val_end-val, trash.str);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3275 break;
3276 default: /* impossible */
3277 return -1;
3278 }
3279
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3280 switch (n_replaced) {
3281 case -1: return -1;
3282 case -2: continue;
3283 }
3284
3285 delta = buffer_replace2(msg->chn->buf, val, val_end, reg_dst_buf, n_replaced);
3286
3287 hdr->len += delta;
3288 http_msg_move_end(msg, delta);
3289 }
3290
3291 return 0;
3292}
3293
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3294/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3295 * transaction <txn>. Returns the verdict of the first rule that prevents
3296 * further processing of the request (auth, deny, ...), and defaults to
3297 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3298 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
3299 * on txn->flags if it encounters a tarpit rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3300 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3301enum rule_result
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3302http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3303{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3304 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3305 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3306 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3307 const char *auth_realm;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3308
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3309 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3310 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3311 continue;
3312
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3313 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3314 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3315 int ret;
3316
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3317 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3318 ret = acl_pass(ret);
3319
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3320 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3321 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3322
3323 if (!ret) /* condition not matched */
3324 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3325 }
3326
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3327
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3328 switch (rule->action) {
3329 case HTTP_REQ_ACT_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3330 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3331
3332 case HTTP_REQ_ACT_DENY:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3333 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3334
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3335 case HTTP_REQ_ACT_TARPIT:
3336 txn->flags |= TX_CLTARPIT;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3337 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3338
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3339 case HTTP_REQ_ACT_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3340 /* Auth might be performed on regular http-req rules as well as on stats */
3341 auth_realm = rule->arg.auth.realm;
3342 if (!auth_realm) {
3343 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3344 auth_realm = STATS_DEFAULT_REALM;
3345 else
3346 auth_realm = px->id;
3347 }
3348 /* send 401/407 depending on whether we use a proxy or not. We still
3349 * count one error, because normal browsing won't significantly
3350 * increase the counter but brute force attempts will.
3351 */
3352 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3353 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
3354 stream_int_retnclose(&s->si[0], &trash);
3355 session_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3356 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3357
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3358 case HTTP_REQ_ACT_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3359 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3360 return HTTP_RULE_RES_BADREQ;
3361 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3362
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3363 case HTTP_REQ_ACT_SET_NICE:
3364 s->task->nice = rule->arg.nice;
3365 break;
3366
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3367 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3368 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3369 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]3370 break;
3371
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3372 case HTTP_REQ_ACT_SET_MARK:
3373#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3374 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3375 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]3376#endif
3377 break;
3378
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3379 case HTTP_REQ_ACT_SET_LOGL:
3380 s->logs.level = rule->arg.loglevel;
3381 break;
3382
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3383 case HTTP_REQ_ACT_REPLACE_HDR:
3384 case HTTP_REQ_ACT_REPLACE_VAL:
3385 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3386 txn->req.chn->buf->p, &txn->hdr_idx, &rule->arg.hdr_add.fmt,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3387 &rule->arg.hdr_add.re, &ctx, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3388 return HTTP_RULE_RES_BADREQ;
3389 break;
3390
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3391 case HTTP_REQ_ACT_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3392 ctx.idx = 0;
3393 /* remove all occurrences of the header */
3394 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3395 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3396 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3397 }
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame^]3398 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3399
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame^]3400 case HTTP_REQ_ACT_SET_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3401 case HTTP_REQ_ACT_ADD_HDR:
3402 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3403 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3404 trash.len = rule->arg.hdr_add.name_len;
3405 trash.str[trash.len++] = ':';
3406 trash.str[trash.len++] = ' ';
3407 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame^]3408
3409 if (rule->action == HTTP_REQ_ACT_SET_HDR) {
3410 /* remove all occurrences of the header */
3411 ctx.idx = 0;
3412 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3413 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3414 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3415 }
3416 }
3417
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3418 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3419 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3420
3421 case HTTP_REQ_ACT_DEL_ACL:
3422 case HTTP_REQ_ACT_DEL_MAP: {
3423 struct pat_ref *ref;
3424 char *key;
3425 int len;
3426
3427 /* collect reference */
3428 ref = pat_ref_lookup(rule->arg.map.ref);
3429 if (!ref)
3430 continue;
3431
3432 /* collect key */
3433 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3434 key = trash.str;
3435 key[len] = '\0';
3436
3437 /* perform update */
3438 /* returned code: 1=ok, 0=ko */
3439 pat_ref_delete(ref, key);
3440
3441 break;
3442 }
3443
3444 case HTTP_REQ_ACT_ADD_ACL: {
3445 struct pat_ref *ref;
3446 char *key;
3447 struct chunk *trash_key;
3448 int len;
3449
3450 trash_key = get_trash_chunk();
3451
3452 /* collect reference */
3453 ref = pat_ref_lookup(rule->arg.map.ref);
3454 if (!ref)
3455 continue;
3456
3457 /* collect key */
3458 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3459 key = trash_key->str;
3460 key[len] = '\0';
3461
3462 /* perform update */
3463 /* add entry only if it does not already exist */
3464 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3465 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3466
3467 break;
3468 }
3469
3470 case HTTP_REQ_ACT_SET_MAP: {
3471 struct pat_ref *ref;
3472 char *key, *value;
3473 struct chunk *trash_key, *trash_value;
3474 int len;
3475
3476 trash_key = get_trash_chunk();
3477 trash_value = get_trash_chunk();
3478
3479 /* collect reference */
3480 ref = pat_ref_lookup(rule->arg.map.ref);
3481 if (!ref)
3482 continue;
3483
3484 /* collect key */
3485 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3486 key = trash_key->str;
3487 key[len] = '\0';
3488
3489 /* collect value */
3490 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3491 value = trash_value->str;
3492 value[len] = '\0';
3493
3494 /* perform update */
3495 if (pat_ref_find_elt(ref, key) != NULL)
3496 /* update entry if it exists */
3497 pat_ref_set(ref, key, value, NULL);
3498 else
3499 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3500 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3501
3502 break;
3503 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3504
3505 case HTTP_REQ_ACT_CUSTOM_CONT:
3506 rule->action_ptr(rule, px, s, txn);
3507 break;
3508
3509 case HTTP_REQ_ACT_CUSTOM_STOP:
3510 rule->action_ptr(rule, px, s, txn);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3511 return HTTP_RULE_RES_DONE;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3512 }
3513 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3514
3515 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3516 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3517}
3518
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3519
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3520/* Executes the http-response rules <rules> for session <s>, proxy <px> and
3521 * transaction <txn>. Returns the first rule that prevents further processing
3522 * of the response (deny, ...) or NULL if it executed all rules or stopped
3523 * on an allow. It may set the TX_SVDENY on txn->flags if it encounters a deny
3524 * rule.
3525 */
3526static struct http_res_rule *
3527http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3528{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3529 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3530 struct http_res_rule *rule;
3531 struct hdr_ctx ctx;
3532
3533 list_for_each_entry(rule, rules, list) {
3534 if (rule->action >= HTTP_RES_ACT_MAX)
3535 continue;
3536
3537 /* check optional condition */
3538 if (rule->cond) {
3539 int ret;
3540
3541 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
3542 ret = acl_pass(ret);
3543
3544 if (rule->cond->pol == ACL_COND_UNLESS)
3545 ret = !ret;
3546
3547 if (!ret) /* condition not matched */
3548 continue;
3549 }
3550
3551
3552 switch (rule->action) {
3553 case HTTP_RES_ACT_ALLOW:
3554 return NULL; /* "allow" rules are OK */
3555
3556 case HTTP_RES_ACT_DENY:
3557 txn->flags |= TX_SVDENY;
3558 return rule;
3559
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3560 case HTTP_RES_ACT_SET_NICE:
3561 s->task->nice = rule->arg.nice;
3562 break;
3563
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3564 case HTTP_RES_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3565 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3566 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]3567 break;
3568
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3569 case HTTP_RES_ACT_SET_MARK:
3570#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3571 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3572 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]3573#endif
3574 break;
3575
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3576 case HTTP_RES_ACT_SET_LOGL:
3577 s->logs.level = rule->arg.loglevel;
3578 break;
3579
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3580 case HTTP_RES_ACT_REPLACE_HDR:
3581 case HTTP_RES_ACT_REPLACE_VAL:
3582 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3583 txn->rsp.chn->buf->p, &txn->hdr_idx, &rule->arg.hdr_add.fmt,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3584 &rule->arg.hdr_add.re, &ctx, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3585 return NULL; /* note: we should report an error here */
3586 break;
3587
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3588 case HTTP_RES_ACT_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3589 ctx.idx = 0;
3590 /* remove all occurrences of the header */
3591 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3592 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3593 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3594 }
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame^]3595 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3596
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame^]3597 case HTTP_RES_ACT_SET_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3598 case HTTP_RES_ACT_ADD_HDR:
3599 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3600 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3601 trash.len = rule->arg.hdr_add.name_len;
3602 trash.str[trash.len++] = ':';
3603 trash.str[trash.len++] = ' ';
3604 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame^]3605
3606 if (rule->action == HTTP_RES_ACT_SET_HDR) {
3607 /* remove all occurrences of the header */
3608 ctx.idx = 0;
3609 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3610 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3611 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3612 }
3613 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3614 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3615 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3616
3617 case HTTP_RES_ACT_DEL_ACL:
3618 case HTTP_RES_ACT_DEL_MAP: {
3619 struct pat_ref *ref;
3620 char *key;
3621 int len;
3622
3623 /* collect reference */
3624 ref = pat_ref_lookup(rule->arg.map.ref);
3625 if (!ref)
3626 continue;
3627
3628 /* collect key */
3629 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3630 key = trash.str;
3631 key[len] = '\0';
3632
3633 /* perform update */
3634 /* returned code: 1=ok, 0=ko */
3635 pat_ref_delete(ref, key);
3636
3637 break;
3638 }
3639
3640 case HTTP_RES_ACT_ADD_ACL: {
3641 struct pat_ref *ref;
3642 char *key;
3643 struct chunk *trash_key;
3644 int len;
3645
3646 trash_key = get_trash_chunk();
3647
3648 /* collect reference */
3649 ref = pat_ref_lookup(rule->arg.map.ref);
3650 if (!ref)
3651 continue;
3652
3653 /* collect key */
3654 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3655 key = trash_key->str;
3656 key[len] = '\0';
3657
3658 /* perform update */
3659 /* check if the entry already exists */
3660 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3661 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3662
3663 break;
3664 }
3665
3666 case HTTP_RES_ACT_SET_MAP: {
3667 struct pat_ref *ref;
3668 char *key, *value;
3669 struct chunk *trash_key, *trash_value;
3670 int len;
3671
3672 trash_key = get_trash_chunk();
3673 trash_value = get_trash_chunk();
3674
3675 /* collect reference */
3676 ref = pat_ref_lookup(rule->arg.map.ref);
3677 if (!ref)
3678 continue;
3679
3680 /* collect key */
3681 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3682 key = trash_key->str;
3683 key[len] = '\0';
3684
3685 /* collect value */
3686 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3687 value = trash_value->str;
3688 value[len] = '\0';
3689
3690 /* perform update */
3691 if (pat_ref_find_elt(ref, key) != NULL)
3692 /* update entry if it exists */
3693 pat_ref_set(ref, key, value, NULL);
3694 else
3695 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3696 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3697
3698 break;
3699 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3700
3701 case HTTP_RES_ACT_CUSTOM_CONT:
3702 rule->action_ptr(rule, px, s, txn);
3703 break;
3704
3705 case HTTP_RES_ACT_CUSTOM_STOP:
3706 rule->action_ptr(rule, px, s, txn);
3707 return rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3708 }
3709 }
3710
3711 /* we reached the end of the rules, nothing to report */
3712 return NULL;
3713}
3714
3715
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3716/* Perform an HTTP redirect based on the information in <rule>. The function
3717 * returns non-zero on success, or zero in case of a, irrecoverable error such
3718 * as too large a request to build a valid response.
3719 */
3720static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3721{
3722 struct http_msg *msg = &txn->req;
3723 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3724 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3725
3726 /* build redirect message */
3727 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3728 case 308:
3729 msg_fmt = HTTP_308;
3730 break;
3731 case 307:
3732 msg_fmt = HTTP_307;
3733 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3734 case 303:
3735 msg_fmt = HTTP_303;
3736 break;
3737 case 301:
3738 msg_fmt = HTTP_301;
3739 break;
3740 case 302:
3741 default:
3742 msg_fmt = HTTP_302;
3743 break;
3744 }
3745
3746 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3747 return 0;
3748
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3749 location = trash.str + trash.len;
3750
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3751 switch(rule->type) {
3752 case REDIRECT_TYPE_SCHEME: {
3753 const char *path;
3754 const char *host;
3755 struct hdr_ctx ctx;
3756 int pathlen;
3757 int hostlen;
3758
3759 host = "";
3760 hostlen = 0;
3761 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]3762 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]3763 host = ctx.line + ctx.val;
3764 hostlen = ctx.vlen;
3765 }
3766
3767 path = http_get_path(txn);
3768 /* build message using path */
3769 if (path) {
3770 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3771 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3772 int qs = 0;
3773 while (qs < pathlen) {
3774 if (path[qs] == '?') {
3775 pathlen = qs;
3776 break;
3777 }
3778 qs++;
3779 }
3780 }
3781 } else {
3782 path = "/";
3783 pathlen = 1;
3784 }
3785
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3786 if (rule->rdr_str) { /* this is an old "redirect" rule */
3787 /* check if we can add scheme + "://" + host + path */
3788 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3789 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3790
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3791 /* add scheme */
3792 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3793 trash.len += rule->rdr_len;
3794 }
3795 else {
3796 /* add scheme with executing log format */
3797 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]3798
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3799 /* check if we can add scheme + "://" + host + path */
3800 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3801 return 0;
3802 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3803 /* add "://" */
3804 memcpy(trash.str + trash.len, "://", 3);
3805 trash.len += 3;
3806
3807 /* add host */
3808 memcpy(trash.str + trash.len, host, hostlen);
3809 trash.len += hostlen;
3810
3811 /* add path */
3812 memcpy(trash.str + trash.len, path, pathlen);
3813 trash.len += pathlen;
3814
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3815 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3816 if (trash.len && trash.str[trash.len - 1] != '/' &&
3817 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3818 if (trash.len > trash.size - 5)
3819 return 0;
3820 trash.str[trash.len] = '/';
3821 trash.len++;
3822 }
3823
3824 break;
3825 }
3826 case REDIRECT_TYPE_PREFIX: {
3827 const char *path;
3828 int pathlen;
3829
3830 path = http_get_path(txn);
3831 /* build message using path */
3832 if (path) {
3833 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3834 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3835 int qs = 0;
3836 while (qs < pathlen) {
3837 if (path[qs] == '?') {
3838 pathlen = qs;
3839 break;
3840 }
3841 qs++;
3842 }
3843 }
3844 } else {
3845 path = "/";
3846 pathlen = 1;
3847 }
3848
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3849 if (rule->rdr_str) { /* this is an old "redirect" rule */
3850 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3851 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3852
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3853 /* add prefix. Note that if prefix == "/", we don't want to
3854 * add anything, otherwise it makes it hard for the user to
3855 * configure a self-redirection.
3856 */
3857 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3858 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3859 trash.len += rule->rdr_len;
3860 }
3861 }
3862 else {
3863 /* add prefix with executing log format */
3864 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3865
3866 /* Check length */
3867 if (trash.len + pathlen > trash.size - 4)
3868 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3869 }
3870
3871 /* add path */
3872 memcpy(trash.str + trash.len, path, pathlen);
3873 trash.len += pathlen;
3874
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3875 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3876 if (trash.len && trash.str[trash.len - 1] != '/' &&
3877 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3878 if (trash.len > trash.size - 5)
3879 return 0;
3880 trash.str[trash.len] = '/';
3881 trash.len++;
3882 }
3883
3884 break;
3885 }
3886 case REDIRECT_TYPE_LOCATION:
3887 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3888 if (rule->rdr_str) { /* this is an old "redirect" rule */
3889 if (trash.len + rule->rdr_len > trash.size - 4)
3890 return 0;
3891
3892 /* add location */
3893 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3894 trash.len += rule->rdr_len;
3895 }
3896 else {
3897 /* add location with executing log format */
3898 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]3899
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3900 /* Check left length */
3901 if (trash.len > trash.size - 4)
3902 return 0;
3903 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3904 break;
3905 }
3906
3907 if (rule->cookie_len) {
3908 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3909 trash.len += 14;
3910 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3911 trash.len += rule->cookie_len;
3912 memcpy(trash.str + trash.len, "\r\n", 2);
3913 trash.len += 2;
3914 }
3915
3916 /* add end of headers and the keep-alive/close status.
3917 * We may choose to set keep-alive if the Location begins
3918 * with a slash, because the client will come back to the
3919 * same server.
3920 */
3921 txn->status = rule->code;
3922 /* let's log the request time */
3923 s->logs.tv_request = now;
3924
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3925 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3926 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3927 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3928 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3929 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3930 /* keep-alive possible */
3931 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3932 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3933 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3934 trash.len += 30;
3935 } else {
3936 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3937 trash.len += 24;
3938 }
3939 }
3940 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3941 trash.len += 4;
3942 bo_inject(txn->rsp.chn, trash.str, trash.len);
3943 /* "eat" the request */
3944 bi_fast_delete(txn->req.chn->buf, msg->sov);
Willy Tarreau6d8bac72014-04-25 12:19:32 +0200[diff] [blame]3945 msg->next -= msg->sov;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3946 msg->sov = 0;
3947 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3948 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3949 txn->req.msg_state = HTTP_MSG_CLOSED;
3950 txn->rsp.msg_state = HTTP_MSG_DONE;
3951 } else {
3952 /* keep-alive not possible */
3953 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3954 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3955 trash.len += 29;
3956 } else {
3957 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3958 trash.len += 23;
3959 }
3960 stream_int_retnclose(txn->req.chn->prod, &trash);
3961 txn->req.chn->analysers = 0;
3962 }
3963
3964 if (!(s->flags & SN_ERR_MASK))
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3965 s->flags |= SN_ERR_LOCAL;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3966 if (!(s->flags & SN_FINST_MASK))
3967 s->flags |= SN_FINST_R;
3968
3969 return 1;
3970}
3971
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3972/* This stream analyser runs all HTTP request processing which is common to
3973 * frontends and backends, which means blocking ACLs, filters, connection-close,
3974 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3975 * 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]3976 * either needs more data or wants to immediately abort the request (eg: deny,
3977 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3978 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3979int http_process_req_common(struct session *s, struct channel *req, int an_bit, struct proxy *px)
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3980{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3981 struct http_txn *txn = &s->txn;
3982 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3983 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3984 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3985 enum rule_result verdict;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3986
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3987 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3988 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3989 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3990 return 0;
3991 }
3992
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3993 DPRINTF(stderr,"[%u] %s: session=%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]3994 now_ms, __FUNCTION__,
3995 s,
3996 req,
3997 req->rex, req->wex,
3998 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3999 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4000 req->analysers);
4001
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4002 /* just in case we have some per-backend tracking */
4003 session_inc_be_http_req_ctr(s);
4004
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4005 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4006 if (!LIST_ISEMPTY(&px->http_req_rules)) {
4007 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, txn);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4008
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4009 switch (verdict) {
4010 case HTTP_RULE_RES_CONT:
4011 case HTTP_RULE_RES_STOP: /* nothing to do */
4012 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4013
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4014 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4015 if (txn->flags & TX_CLTARPIT)
4016 goto tarpit;
4017 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4018
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4019 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4020 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4021
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4022 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4023 goto done;
4024
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4025 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4026 goto return_bad_req;
4027 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4028 }
4029
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4030 /* OK at this stage, we know that the request was accepted according to
4031 * the http-request rules, we can check for the stats. Note that the
4032 * URI is detected *before* the req* rules in order not to be affected
4033 * by a possible reqrep, while they are processed *after* so that a
4034 * reqdeny can still block them. This clearly needs to change in 1.6!
4035 */
4036 if (stats_check_uri(s->rep->prod, txn, px)) {
4037 s->target = &http_stats_applet.obj_type;
4038 if (unlikely(!stream_int_register_handler(s->rep->prod, objt_applet(s->target)))) {
4039 txn->status = 500;
4040 s->logs.tv_request = now;
4041 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4042
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4043 if (!(s->flags & SN_ERR_MASK))
4044 s->flags |= SN_ERR_RESOURCE;
4045 goto return_prx_cond;
4046 }
4047
4048 /* parse the whole stats request and extract the relevant information */
4049 http_handle_stats(s, req);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4050 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, txn);
4051 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4052
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4053 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4054 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4055
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4056 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4057 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4058 }
4059
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4060 /* evaluate the req* rules except reqadd */
4061 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4062 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4063 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4064
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4065 if (txn->flags & TX_CLDENY)
4066 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4067
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4068 if (txn->flags & TX_CLTARPIT)
4069 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4070 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4071
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4072 /* add request headers from the rule sets in the same order */
4073 list_for_each_entry(wl, &px->req_add, list) {
4074 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]4075 int ret = acl_exec_cond(wl->cond, px, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4076 ret = acl_pass(ret);
4077 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4078 ret = !ret;
4079 if (!ret)
4080 continue;
4081 }
4082
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4083 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4084 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4085 }
4086
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4087
4088 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4089 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4090 /* process the stats request now */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4091 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
4092 s->fe->fe_counters.intercepted_req++;
4093
4094 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
4095 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
4096 if (!(s->flags & SN_FINST_MASK))
4097 s->flags |= SN_FINST_R;
4098
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4099 /* we may want to compress the stats page */
4100 if (s->fe->comp || s->be->comp)
4101 select_compression_request_header(s, req->buf);
4102
4103 /* enable the minimally required analyzers to handle keep-alive and compression on the HTTP response */
Willy Tarreaude8ca962014-11-20 22:23:10 +0100[diff] [blame]4104 req->analysers = (req->analysers & AN_REQ_HTTP_BODY) | AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4105 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4106 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4107
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4108 /* check whether we have some ACLs set to redirect this request */
4109 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4110 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4111 int ret;
4112
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]4113 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4114 ret = acl_pass(ret);
4115 if (rule->cond->pol == ACL_COND_UNLESS)
4116 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4117 if (!ret)
4118 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4119 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4120 if (!http_apply_redirect_rule(rule, s, txn))
4121 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4122 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4123 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4124
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4125 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4126 * If this happens, then the data will not come immediately, so we must
4127 * send all what we have without waiting. Note that due to the small gain
4128 * 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]4129 * 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]4130 * itself once used.
4131 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4132 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4133
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4134 done: /* done with this analyser, continue with next ones that the calling
4135 * points will have set, if any.
4136 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4137 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIERfc566b52014-08-22 06:55:26 +0200[diff] [blame]4138 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4139 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4140 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4141
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4142 tarpit:
4143 /* When a connection is tarpitted, we use the tarpit timeout,
4144 * which may be the same as the connect timeout if unspecified.
4145 * If unset, then set it to zero because we really want it to
4146 * eventually expire. We build the tarpit as an analyser.
4147 */
4148 channel_erase(s->req);
4149
4150 /* wipe the request out so that we can drop the connection early
4151 * if the client closes first.
4152 */
4153 channel_dont_connect(req);
4154 req->analysers = 0; /* remove switching rules etc... */
4155 req->analysers |= AN_REQ_HTTP_TARPIT;
4156 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4157 if (!req->analyse_exp)
4158 req->analyse_exp = tick_add(now_ms, 0);
4159 session_inc_http_err_ctr(s);
4160 s->fe->fe_counters.denied_req++;
4161 if (s->fe != s->be)
4162 s->be->be_counters.denied_req++;
4163 if (s->listener->counters)
4164 s->listener->counters->denied_req++;
Thierry FOURNIERfc566b52014-08-22 06:55:26 +0200[diff] [blame]4165 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4166
4167 deny: /* this request was blocked (denied) */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4168 txn->flags |= TX_CLDENY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4169 txn->status = 403;
4170 s->logs.tv_request = now;
4171 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
4172 session_inc_http_err_ctr(s);
4173 s->fe->fe_counters.denied_req++;
4174 if (s->fe != s->be)
4175 s->be->be_counters.denied_req++;
4176 if (s->listener->counters)
4177 s->listener->counters->denied_req++;
4178 goto return_prx_cond;
4179
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4180 return_bad_req:
4181 /* We centralize bad requests processing here */
4182 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4183 /* we detected a parsing error. We want to archive this request
4184 * in the dedicated proxy area for later troubleshooting.
4185 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4186 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4187 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4188
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4189 txn->req.msg_state = HTTP_MSG_ERROR;
4190 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4191 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4192
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4193 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4194 if (s->listener->counters)
4195 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4196
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4197 return_prx_cond:
4198 if (!(s->flags & SN_ERR_MASK))
4199 s->flags |= SN_ERR_PRXCOND;
4200 if (!(s->flags & SN_FINST_MASK))
4201 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4202
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4203 req->analysers = 0;
4204 req->analyse_exp = TICK_ETERNITY;
4205 return 0;
4206}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4207
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4208/* This function performs all the processing enabled for the current request.
4209 * It returns 1 if the processing can continue on next analysers, or zero if it
4210 * needs more data, encounters an error, or wants to immediately abort the
4211 * request. It relies on buffers flags, and updates s->req->analysers.
4212 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4213int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4214{
4215 struct http_txn *txn = &s->txn;
4216 struct http_msg *msg = &txn->req;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4217 struct connection *cli_conn = objt_conn(req->prod->end);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4218
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4219 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4220 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4221 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4222 return 0;
4223 }
4224
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4225 DPRINTF(stderr,"[%u] %s: session=%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]4226 now_ms, __FUNCTION__,
4227 s,
4228 req,
4229 req->rex, req->wex,
4230 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4231 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4232 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4233
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]4234 if (s->fe->comp || s->be->comp)
4235 select_compression_request_header(s, req->buf);
4236
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4237 /*
4238 * Right now, we know that we have processed the entire headers
4239 * and that unwanted requests have been filtered out. We can do
4240 * whatever we want with the remaining request. Also, now we
4241 * may have separate values for ->fe, ->be.
4242 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4243
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4244 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4245 * If HTTP PROXY is set we simply get remote server address parsing
4246 * incoming request. Note that this requires that a connection is
4247 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4248 */
4249 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4250 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4251 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4252
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4253 /* Note that for now we don't reuse existing proxy connections */
4254 if (unlikely((conn = si_alloc_conn(req->cons, 0)) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4255 txn->req.msg_state = HTTP_MSG_ERROR;
4256 txn->status = 500;
4257 req->analysers = 0;
4258 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
4259
4260 if (!(s->flags & SN_ERR_MASK))
4261 s->flags |= SN_ERR_RESOURCE;
4262 if (!(s->flags & SN_FINST_MASK))
4263 s->flags |= SN_FINST_R;
4264
4265 return 0;
4266 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4267
4268 path = http_get_path(txn);
4269 url2sa(req->buf->p + msg->sl.rq.u,
4270 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4271 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4272 /* if the path was found, we have to remove everything between
4273 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4274 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4275 * u_l characters by a single "/".
4276 */
4277 if (path) {
4278 char *cur_ptr = req->buf->p;
4279 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4280 int delta;
4281
4282 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4283 http_msg_move_end(&txn->req, delta);
4284 cur_end += delta;
4285 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4286 goto return_bad_req;
4287 }
4288 else {
4289 char *cur_ptr = req->buf->p;
4290 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4291 int delta;
4292
4293 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4294 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4295 http_msg_move_end(&txn->req, delta);
4296 cur_end += delta;
4297 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4298 goto return_bad_req;
4299 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4300 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4301
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4302 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4303 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4304 * Note that doing so might move headers in the request, but
4305 * the fields will stay coherent and the URI will not move.
4306 * This should only be performed in the backend.
4307 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4308 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4309 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
4310 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4311
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4312 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4313 * 8: the appsession cookie was looked up very early in 1.2,
4314 * so let's do the same now.
4315 */
4316
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4317 /* It needs to look into the URI unless persistence must be ignored */
4318 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4319 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]4320 }
4321
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4322 /* add unique-id if "header-unique-id" is specified */
4323
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4324 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
4325 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4326 goto return_bad_req;
4327 s->unique_id[0] = '\0';
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4328 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4329 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4330
4331 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4332 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
4333 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4334 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4335 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]4336 goto return_bad_req;
4337 }
4338
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4339 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4340 * 9: add X-Forwarded-For if either the frontend or the backend
4341 * asks for it.
4342 */
4343 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4344 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4345 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]4346 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
4347 s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_len : s->fe->fwdfor_hdr_len,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4348 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4349 /* The header is set to be added only if none is present
4350 * and we found it, so don't do anything.
4351 */
4352 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4353 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4354 /* Add an X-Forwarded-For header unless the source IP is
4355 * in the 'except' network range.
4356 */
4357 if ((!s->fe->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4358 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & s->fe->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4359 != s->fe->except_net.s_addr) &&
4360 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4361 (((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]4362 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4363 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4364 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4365 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4366
4367 /* Note: we rely on the backend to get the header name to be used for
4368 * x-forwarded-for, because the header is really meant for the backends.
4369 * However, if the backend did not specify any option, we have to rely
4370 * on the frontend's header name.
4371 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4372 if (s->be->fwdfor_hdr_len) {
4373 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4374 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4375 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4376 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4377 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4378 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4379 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]4380
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4381 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]4382 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4383 }
4384 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4385 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4386 /* FIXME: for the sake of completeness, we should also support
4387 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4388 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4389 int len;
4390 char pn[INET6_ADDRSTRLEN];
4391 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4392 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4393 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4394
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4395 /* Note: we rely on the backend to get the header name to be used for
4396 * x-forwarded-for, because the header is really meant for the backends.
4397 * However, if the backend did not specify any option, we have to rely
4398 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4399 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4400 if (s->be->fwdfor_hdr_len) {
4401 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4402 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4403 } else {
4404 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4405 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4406 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4407 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4408
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4409 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]4410 goto return_bad_req;
4411 }
4412 }
4413
4414 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4415 * 10: add X-Original-To if either the frontend or the backend
4416 * asks for it.
4417 */
4418 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
4419
4420 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4421 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4422 /* Add an X-Original-To header unless the destination IP is
4423 * in the 'except' network range.
4424 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4425 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4426
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4427 if (cli_conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4428 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4429 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & s->fe->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4430 != s->fe->except_to.s_addr) &&
4431 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4432 (((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]4433 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4434 int len;
4435 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4436 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4437
4438 /* Note: we rely on the backend to get the header name to be used for
4439 * x-original-to, because the header is really meant for the backends.
4440 * However, if the backend did not specify any option, we have to rely
4441 * on the frontend's header name.
4442 */
4443 if (s->be->orgto_hdr_len) {
4444 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4445 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4446 } else {
4447 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4448 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4449 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4450 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]4451
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4452 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]4453 goto return_bad_req;
4454 }
4455 }
4456 }
4457
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4458 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4459 * If an "Upgrade" token is found, the header is left untouched in order not to have
4460 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4461 * "Upgrade" is present in the Connection header.
4462 */
4463 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4464 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4465 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4466 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4467 unsigned int want_flags = 0;
4468
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4469 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4470 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4471 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4472 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4473 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4474 want_flags |= TX_CON_CLO_SET;
4475 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4476 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4477 ((s->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
4478 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4479 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4480 want_flags |= TX_CON_KAL_SET;
4481 }
4482
4483 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4484 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4485 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4486
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4487
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4488 /* If we have no server assigned yet and we're balancing on url_param
4489 * with a POST request, we may be interested in checking the body for
4490 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4491 */
4492 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
4493 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4494 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4495 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4496 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4497 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4498
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4499 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4500 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4501#ifdef TCP_QUICKACK
4502 /* We expect some data from the client. Unless we know for sure
4503 * we already have a full request, we have to re-enable quick-ack
4504 * in case we previously disabled it, otherwise we might cause
4505 * the client to delay further data.
4506 */
4507 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4508 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4509 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4510 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4511 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4512#endif
4513 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4514
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4515 /*************************************************************
4516 * OK, that's finished for the headers. We have done what we *
4517 * could. Let's switch to the DATA state. *
4518 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4519 req->analyse_exp = TICK_ETERNITY;
4520 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4521
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4522 /* if the server closes the connection, we want to immediately react
4523 * and close the socket to save packets and syscalls.
4524 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4525 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
4526 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4527
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4528 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4529 /* OK let's go on with the BODY now */
4530 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4531
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4532 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4533 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4534 /* we detected a parsing error. We want to archive this request
4535 * in the dedicated proxy area for later troubleshooting.
4536 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4537 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4538 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4539
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4540 txn->req.msg_state = HTTP_MSG_ERROR;
4541 txn->status = 400;
4542 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4543 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4544
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4545 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4546 if (s->listener->counters)
4547 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4548
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4549 if (!(s->flags & SN_ERR_MASK))
4550 s->flags |= SN_ERR_PRXCOND;
4551 if (!(s->flags & SN_FINST_MASK))
4552 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4553 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4554}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4555
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4556/* This function is an analyser which processes the HTTP tarpit. It always
4557 * returns zero, at the beginning because it prevents any other processing
4558 * from occurring, and at the end because it terminates the request.
4559 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4560int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4561{
4562 struct http_txn *txn = &s->txn;
4563
4564 /* This connection is being tarpitted. The CLIENT side has
4565 * already set the connect expiration date to the right
4566 * timeout. We just have to check that the client is still
4567 * there and that the timeout has not expired.
4568 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4569 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4570 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4571 !tick_is_expired(req->analyse_exp, now_ms))
4572 return 0;
4573
4574 /* We will set the queue timer to the time spent, just for
4575 * logging purposes. We fake a 500 server error, so that the
4576 * attacker will not suspect his connection has been tarpitted.
4577 * It will not cause trouble to the logs because we can exclude
4578 * the tarpitted connections by filtering on the 'PT' status flags.
4579 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4580 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4581
4582 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4583 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4584 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4585
4586 req->analysers = 0;
4587 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4588
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4589 if (!(s->flags & SN_ERR_MASK))
4590 s->flags |= SN_ERR_PRXCOND;
4591 if (!(s->flags & SN_FINST_MASK))
4592 s->flags |= SN_FINST_T;
4593 return 0;
4594}
4595
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4596/* This function is an analyser which waits for the HTTP request body. It waits
4597 * for either the buffer to be full, or the full advertised contents to have
4598 * reached the buffer. It must only be called after the standard HTTP request
4599 * processing has occurred, because it expects the request to be parsed and will
4600 * look for the Expect header. It may send a 100-Continue interim response. It
4601 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4602 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4603 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4604 */
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4605int http_wait_for_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4606{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4607 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4608 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4609
4610 /* We have to parse the HTTP request body to find any required data.
4611 * "balance url_param check_post" should have been the only way to get
4612 * into this. We were brought here after HTTP header analysis, so all
4613 * related structures are ready.
4614 */
4615
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4616 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4617 /* This is the first call */
4618 if (msg->msg_state < HTTP_MSG_BODY)
4619 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4620
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4621 if (msg->msg_state < HTTP_MSG_100_SENT) {
4622 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4623 * send an HTTP/1.1 100 Continue intermediate response.
4624 */
4625 if (msg->flags & HTTP_MSGF_VER_11) {
4626 struct hdr_ctx ctx;
4627 ctx.idx = 0;
4628 /* Expect is allowed in 1.1, look for it */
4629 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4630 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
4631 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
4632 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4633 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4634 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4635 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4636
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4637 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4638 * req->buf->p still points to the beginning of the message. We
4639 * must save the body in msg->next because it survives buffer
4640 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4641 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4642 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4643
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4644 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4645 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4646 else
4647 msg->msg_state = HTTP_MSG_DATA;
4648 }
4649
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4650 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4651 /* We're in content-length mode, we just have to wait for enough data. */
4652 if (req->buf->i - msg->sov < msg->body_len)
4653 goto missing_data;
4654
4655 /* OK we have everything we need now */
4656 goto http_end;
4657 }
4658
4659 /* OK here we're parsing a chunked-encoded message */
4660
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4661 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4662 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4663 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4664 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4665 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4666 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4667
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4668 if (!ret)
4669 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4670 else if (ret < 0) {
4671 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4672 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4673 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4674 }
4675
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4676 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4677 * We have the first data byte is in msg->sov. We're waiting for at
Willy Tarreau226071e2014-04-10 11:55:45 +0200[diff] [blame]4678 * least a whole chunk or the whole content length bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4679 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4680 if (msg->msg_state == HTTP_MSG_TRAILERS)
4681 goto http_end;
4682
Willy Tarreau226071e2014-04-10 11:55:45 +0200[diff] [blame]4683 if (req->buf->i - msg->sov >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4684 goto http_end;
4685
4686 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4687 /* we get here if we need to wait for more data. If the buffer is full,
4688 * we have the maximum we can expect.
4689 */
4690 if (buffer_full(req->buf, global.tune.maxrewrite))
4691 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4692
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4693 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4694 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4695 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4696
4697 if (!(s->flags & SN_ERR_MASK))
4698 s->flags |= SN_ERR_CLITO;
4699 if (!(s->flags & SN_FINST_MASK))
4700 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4701 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4702 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4703
4704 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4705 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4706 /* Not enough data. We'll re-use the http-request
4707 * timeout here. Ideally, we should set the timeout
4708 * relative to the accept() date. We just set the
4709 * request timeout once at the beginning of the
4710 * request.
4711 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4712 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4713 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4714 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4715 return 0;
4716 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4717
4718 http_end:
4719 /* The situation will not evolve, so let's give up on the analysis. */
4720 s->logs.tv_request = now; /* update the request timer to reflect full request */
4721 req->analysers &= ~an_bit;
4722 req->analyse_exp = TICK_ETERNITY;
4723 return 1;
4724
4725 return_bad_req: /* let's centralize all bad requests */
4726 txn->req.msg_state = HTTP_MSG_ERROR;
4727 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4728 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4729
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4730 if (!(s->flags & SN_ERR_MASK))
4731 s->flags |= SN_ERR_PRXCOND;
4732 if (!(s->flags & SN_FINST_MASK))
4733 s->flags |= SN_FINST_R;
4734
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4735 return_err_msg:
4736 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4737 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4738 if (s->listener->counters)
4739 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4740 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4741}
4742
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4743/* send a server's name with an outgoing request over an established connection.
4744 * Note: this function is designed to be called once the request has been scheduled
4745 * for being forwarded. This is the reason why it rewinds the buffer before
4746 * proceeding.
4747 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4748int 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]4749
4750 struct hdr_ctx ctx;
4751
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4752 char *hdr_name = be->server_id_hdr_name;
4753 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4754 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4755 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4756 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4757
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4758 ctx.idx = 0;
4759
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4760 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4761 if (old_o) {
4762 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4763 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4764 txn->req.next += old_o;
4765 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4766 }
4767
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4768 old_i = chn->buf->i;
4769 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]4770 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4771 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4772 }
4773
4774 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4775 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4776 memcpy(hdr_val, hdr_name, hdr_name_len);
4777 hdr_val += hdr_name_len;
4778 *hdr_val++ = ':';
4779 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4780 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4781 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]4782
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4783 if (old_o) {
4784 /* If this was a forwarded request, we must readjust the amount of
4785 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4786 * variations. Note that the current state is >= HTTP_MSG_BODY,
4787 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4788 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4789 old_o += chn->buf->i - old_i;
4790 b_adv(chn->buf, old_o);
4791 txn->req.next -= old_o;
4792 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4793 }
4794
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4795 return 0;
4796}
4797
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4798/* Terminate current transaction and prepare a new one. This is very tricky
4799 * right now but it works.
4800 */
4801void http_end_txn_clean_session(struct session *s)
4802{
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4803 int prev_status = s->txn.status;
4804
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4805 /* FIXME: We need a more portable way of releasing a backend's and a
4806 * server's connections. We need a safer way to reinitialize buffer
4807 * flags. We also need a more accurate method for computing per-request
4808 * data.
4809 */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4810
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4811 /* unless we're doing keep-alive, we want to quickly close the connection
4812 * to the server.
4813 */
4814 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4815 !si_conn_ready(s->req->cons)) {
4816 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4817 si_shutr(s->req->cons);
4818 si_shutw(s->req->cons);
4819 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4820
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4821 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4822 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4823 if (unlikely(s->srv_conn))
4824 sess_change_server(s, NULL);
4825 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4826
4827 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4828 session_process_counters(s);
4829
4830 if (s->txn.status) {
4831 int n;
4832
4833 n = s->txn.status / 100;
4834 if (n < 1 || n > 5)
4835 n = 0;
4836
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4837 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4838 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4839 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4840 s->fe->fe_counters.p.http.comp_rsp++;
4841 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4842 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4843 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4844 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4845 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4846 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4847 s->be->be_counters.p.http.comp_rsp++;
4848 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4849 }
4850
4851 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4852 s->logs.bytes_in -= s->req->buf->i;
4853 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4854
4855 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4856 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4857 !(s->flags & SN_MONITOR) &&
4858 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4859 s->do_log(s);
4860 }
4861
Willy Tarreauc177ea72014-06-25 15:36:04 +0200[diff] [blame]4862 /* stop tracking content-based counters */
4863 session_stop_content_counters(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]4864 session_update_time_stats(s);
4865
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4866 s->logs.accept_date = date; /* user-visible date for logging */
4867 s->logs.tv_accept = now; /* corrected date for internal use */
4868 tv_zero(&s->logs.tv_request);
4869 s->logs.t_queue = -1;
4870 s->logs.t_connect = -1;
4871 s->logs.t_data = -1;
4872 s->logs.t_close = 0;
4873 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4874 s->logs.srv_queue_size = 0; /* we will get this number soon */
4875
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4876 s->logs.bytes_in = s->req->total = s->req->buf->i;
4877 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4878
4879 if (s->pend_pos)
4880 pendconn_free(s->pend_pos);
4881
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4882 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4883 if (s->flags & SN_CURR_SESS) {
4884 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4885 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4886 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4887 if (may_dequeue_tasks(objt_server(s->target), s->be))
4888 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4889 }
4890
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4891 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4892
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4893 /* only release our endpoint if we don't intend to reuse the
4894 * connection.
4895 */
4896 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4897 !si_conn_ready(s->req->cons)) {
4898 si_release_endpoint(s->req->cons);
4899 }
4900
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4901 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4902 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4903 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4904 s->req->cons->exp = TICK_ETERNITY;
Willy Tarreauc9200962013-12-31 23:03:09 +0100[diff] [blame]4905 s->req->cons->flags &= SI_FL_DONT_WAKE; /* we're in the context of process_session */
Willy Tarreaub4d05092014-09-01 20:35:55 +0200[diff] [blame]4906 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);
4907 s->rep->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);
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4908 s->flags &= ~(SN_DIRECT|SN_ASSIGNED|SN_ADDR_SET|SN_BE_ASSIGNED|SN_FORCE_PRST|SN_IGNORE_PRST);
Willy Tarreau36346242014-02-24 18:26:30 +0100[diff] [blame]4909 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE|SN_SRV_REUSED);
Cyril Bonté17f77072014-10-22 22:30:13 +0200[diff] [blame]4910 s->flags &= ~(SN_ERR_MASK|SN_FINST_MASK|SN_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4911
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4912 s->txn.meth = 0;
4913 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4914 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4915
4916 if (prev_status == 401 || prev_status == 407) {
4917 /* In HTTP keep-alive mode, if we receive a 401, we still have
4918 * a chance of being able to send the visitor again to the same
4919 * server over the same connection. This is required by some
4920 * broken protocols such as NTLM, and anyway whenever there is
4921 * an opportunity for sending the challenge to the proper place,
4922 * it's better to do it (at least it helps with debugging).
4923 */
4924 s->txn.flags |= TX_PREFER_LAST;
4925 }
4926
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4927 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4928 s->req->cons->flags |= SI_FL_INDEP_STR;
4929
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4930 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4931 s->req->flags |= CF_NEVER_WAIT;
4932 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4933 }
4934
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4935 /* if the request buffer is not empty, it means we're
4936 * about to process another request, so send pending
4937 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4938 * Just don't do this if the buffer is close to be full,
4939 * because the request will wait for it to flush a little
4940 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4941 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4942 if (s->req->buf->i) {
4943 if (s->rep->buf->o &&
4944 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4945 bi_end(s->rep->buf) <= s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4946 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4947 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4948
4949 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4950 channel_auto_read(s->req);
4951 channel_auto_close(s->req);
4952 channel_auto_read(s->rep);
4953 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4954
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]4955 /* we're in keep-alive with an idle connection, monitor it */
4956 si_idle_conn(s->req->cons);
4957
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4958 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4959 s->rep->analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4960}
4961
4962
4963/* This function updates the request state machine according to the response
4964 * state machine and buffer flags. It returns 1 if it changes anything (flag
4965 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4966 * it is only used to find when a request/response couple is complete. Both
4967 * this function and its equivalent should loop until both return zero. It
4968 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4969 */
4970int http_sync_req_state(struct session *s)
4971{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4972 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4973 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4974 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4975 unsigned int old_state = txn->req.msg_state;
4976
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4977 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4978 return 0;
4979
4980 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4981 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4982 * We can shut the read side unless we want to abort_on_close,
4983 * or we have a POST request. The issue with POST requests is
4984 * that some browsers still send a CRLF after the request, and
4985 * this CRLF must be read so that it does not remain in the kernel
4986 * buffers, otherwise a close could cause an RST on some systems
4987 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4988 * Note that if we're using keep-alive on the client side, we'd
4989 * rather poll now and keep the polling enabled for the whole
4990 * session's life than enabling/disabling it between each
4991 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4992 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4993 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
4994 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
4995 !(s->be->options & PR_O_ABRT_CLOSE) &&
4996 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4997 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4998
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4999 /* if the server closes the connection, we want to immediately react
5000 * and close the socket to save packets and syscalls.
5001 */
5002 chn->cons->flags |= SI_FL_NOHALF;
5003
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5004 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5005 goto wait_other_side;
5006
5007 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5008 /* The server has not finished to respond, so we
5009 * don't want to move in order not to upset it.
5010 */
5011 goto wait_other_side;
5012 }
5013
5014 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5015 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5016 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5017 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5018 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5019 goto wait_other_side;
5020 }
5021
5022 /* When we get here, it means that both the request and the
5023 * response have finished receiving. Depending on the connection
5024 * mode, we'll have to wait for the last bytes to leave in either
5025 * direction, and sometimes for a close to be effective.
5026 */
5027
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5028 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5029 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5030 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5031 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5032 }
5033 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5034 /* Option forceclose is set, or either side wants to close,
5035 * let's enforce it now that we're not expecting any new
5036 * data to come. The caller knows the session is complete
5037 * once both states are CLOSED.
5038 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5039 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5040 channel_shutr_now(chn);
5041 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5042 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5043 }
5044 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5045 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5046 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5047 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5048 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5049 channel_auto_read(chn);
5050 txn->req.msg_state = HTTP_MSG_TUNNEL;
5051 chn->flags |= CF_NEVER_WAIT;
5052 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5053 }
5054
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5055 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5056 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5057 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5058
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5059 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5060 txn->req.msg_state = HTTP_MSG_CLOSING;
5061 goto http_msg_closing;
5062 }
5063 else {
5064 txn->req.msg_state = HTTP_MSG_CLOSED;
5065 goto http_msg_closed;
5066 }
5067 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5068 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5069 }
5070
5071 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5072 http_msg_closing:
5073 /* nothing else to forward, just waiting for the output buffer
5074 * to be empty and for the shutw_now to take effect.
5075 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5076 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5077 txn->req.msg_state = HTTP_MSG_CLOSED;
5078 goto http_msg_closed;
5079 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5080 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5081 txn->req.msg_state = HTTP_MSG_ERROR;
5082 goto wait_other_side;
5083 }
5084 }
5085
5086 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5087 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5088 /* see above in MSG_DONE why we only do this in these states */
5089 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5090 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5091 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5092 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5093 goto wait_other_side;
5094 }
5095
5096 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5097 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5098}
5099
5100
5101/* This function updates the response state machine according to the request
5102 * state machine and buffer flags. It returns 1 if it changes anything (flag
5103 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5104 * it is only used to find when a request/response couple is complete. Both
5105 * this function and its equivalent should loop until both return zero. It
5106 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5107 */
5108int http_sync_res_state(struct session *s)
5109{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5110 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5111 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5112 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5113 unsigned int old_state = txn->rsp.msg_state;
5114
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5115 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5116 return 0;
5117
5118 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5119 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5120 * still monitor the server connection for a possible close
5121 * while the request is being uploaded, so we don't disable
5122 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5123 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5124 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5125
5126 if (txn->req.msg_state == HTTP_MSG_ERROR)
5127 goto wait_other_side;
5128
5129 if (txn->req.msg_state < HTTP_MSG_DONE) {
5130 /* The client seems to still be sending data, probably
5131 * because we got an error response during an upload.
5132 * We have the choice of either breaking the connection
5133 * or letting it pass through. Let's do the later.
5134 */
5135 goto wait_other_side;
5136 }
5137
5138 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5139 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5140 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5141 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5142 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5143 goto wait_other_side;
5144 }
5145
5146 /* When we get here, it means that both the request and the
5147 * response have finished receiving. Depending on the connection
5148 * mode, we'll have to wait for the last bytes to leave in either
5149 * direction, and sometimes for a close to be effective.
5150 */
5151
5152 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5153 /* Server-close mode : shut read and wait for the request
5154 * side to close its output buffer. The caller will detect
5155 * when we're in DONE and the other is in CLOSED and will
5156 * catch that for the final cleanup.
5157 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5158 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5159 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5160 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5161 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5162 /* Option forceclose is set, or either side wants to close,
5163 * let's enforce it now that we're not expecting any new
5164 * data to come. The caller knows the session is complete
5165 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5166 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5167 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5168 channel_shutr_now(chn);
5169 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5170 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5171 }
5172 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5173 /* The last possible modes are keep-alive and tunnel. Tunnel will
5174 * need to forward remaining data. Keep-alive will need to monitor
5175 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5176 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5177 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5178 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5179 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5180 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5181 }
5182
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5183 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5184 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5185 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5186 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5187 goto http_msg_closing;
5188 }
5189 else {
5190 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5191 goto http_msg_closed;
5192 }
5193 }
5194 goto wait_other_side;
5195 }
5196
5197 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5198 http_msg_closing:
5199 /* nothing else to forward, just waiting for the output buffer
5200 * to be empty and for the shutw_now to take effect.
5201 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5202 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5203 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5204 goto http_msg_closed;
5205 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5206 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5207 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5208 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5209 if (objt_server(s->target))
5210 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5211 goto wait_other_side;
5212 }
5213 }
5214
5215 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5216 http_msg_closed:
5217 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5218 bi_erase(chn);
5219 channel_auto_close(chn);
5220 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5221 goto wait_other_side;
5222 }
5223
5224 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5225 /* We force the response to leave immediately if we're waiting for the
5226 * other side, since there is no pending shutdown to push it out.
5227 */
5228 if (!channel_is_empty(chn))
5229 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5230 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5231}
5232
5233
5234/* Resync the request and response state machines. Return 1 if either state
5235 * changes.
5236 */
5237int http_resync_states(struct session *s)
5238{
5239 struct http_txn *txn = &s->txn;
5240 int old_req_state = txn->req.msg_state;
5241 int old_res_state = txn->rsp.msg_state;
5242
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5243 http_sync_req_state(s);
5244 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5245 if (!http_sync_res_state(s))
5246 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5247 if (!http_sync_req_state(s))
5248 break;
5249 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5250
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5251 /* OK, both state machines agree on a compatible state.
5252 * There are a few cases we're interested in :
5253 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5254 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5255 * directions, so let's simply disable both analysers.
5256 * - HTTP_MSG_CLOSED on the response only means we must abort the
5257 * request.
5258 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5259 * with server-close mode means we've completed one request and we
5260 * must re-initialize the server connection.
5261 */
5262
5263 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5264 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5265 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5266 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
5267 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5268 channel_auto_close(s->req);
5269 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5270 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5271 channel_auto_close(s->rep);
5272 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5273 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5274 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
5275 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5276 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5277 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5278 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5279 channel_auto_close(s->rep);
5280 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5281 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5282 channel_abort(s->req);
5283 channel_auto_close(s->req);
5284 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5285 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5286 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5287 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5288 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5289 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5290 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5291 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5292 /* server-close/keep-alive: terminate this transaction,
5293 * possibly killing the server connection and reinitialize
5294 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5295 */
5296 http_end_txn_clean_session(s);
5297 }
5298
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5299 return txn->req.msg_state != old_req_state ||
5300 txn->rsp.msg_state != old_res_state;
5301}
5302
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5303/* This function is an analyser which forwards request body (including chunk
5304 * sizes if any). It is called as soon as we must forward, even if we forward
5305 * zero byte. The only situation where it must not be called is when we're in
5306 * tunnel mode and we want to forward till the close. It's used both to forward
5307 * remaining data and to resync after end of body. It expects the msg_state to
5308 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5309 * read more data, or 1 once we can go on with next request or end the session.
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5310 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5311 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5312 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5313int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5314{
5315 struct http_txn *txn = &s->txn;
5316 struct http_msg *msg = &s->txn.req;
5317
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5318 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5319 return 0;
5320
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5321 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]5322 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5323 /* Output closed while we were sending data. We must abort and
5324 * wake the other side up.
5325 */
5326 msg->msg_state = HTTP_MSG_ERROR;
5327 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5328 return 1;
5329 }
5330
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5331 /* Note that we don't have to send 100-continue back because we don't
5332 * need the data to complete our job, and it's up to the server to
5333 * decide whether to return 100, 417 or anything else in return of
5334 * an "Expect: 100-continue" header.
5335 */
5336
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5337 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5338 /* we have msg->sov which points to the first byte of message
5339 * body, and req->buf.p still points to the beginning of the
5340 * message. We forward the headers now, as we don't need them
5341 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5342 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5343 b_adv(req->buf, msg->sov);
5344 msg->next -= msg->sov;
5345 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5346
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5347 /* The previous analysers guarantee that the state is somewhere
5348 * between MSG_BODY and the first MSG_DATA. So msg->sol and
5349 * msg->next are always correct.
5350 */
5351 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
5352 if (msg->flags & HTTP_MSGF_TE_CHNK)
5353 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5354 else
5355 msg->msg_state = HTTP_MSG_DATA;
5356 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5357 }
5358
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5359 /* Some post-connect processing might want us to refrain from starting to
5360 * forward data. Currently, the only reason for this is "balance url_param"
5361 * whichs need to parse/process the request after we've enabled forwarding.
5362 */
5363 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
5364 if (!(s->rep->flags & CF_READ_ATTACHED)) {
5365 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5366 req->flags |= CF_WAKE_CONNECT;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5367 goto missing_data;
5368 }
5369 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5370 }
5371
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5372 /* in most states, we should abort in case of early close */
5373 channel_auto_close(req);
5374
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5375 if (req->to_forward) {
5376 /* We can't process the buffer's contents yet */
5377 req->flags |= CF_WAKE_WRITE;
5378 goto missing_data;
5379 }
5380
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5381 while (1) {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5382 if (msg->msg_state == HTTP_MSG_DATA) {
5383 /* must still forward */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5384 /* we may have some pending data starting at req->buf->p */
5385 if (msg->chunk_len > req->buf->i - msg->next) {
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5386 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5387 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5388 }
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5389 msg->next += msg->chunk_len;
5390 msg->chunk_len = 0;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5391
5392 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5393 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5394 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5395 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5396 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5397 }
5398 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5399 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5400 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5401 * TRAILERS state.
5402 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5403 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5404
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5405 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5406 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5407 else if (ret < 0) {
5408 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5409 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5410 http_capture_bad_message(&s->fe->invalid_req, s, msg, HTTP_MSG_CHUNK_SIZE, s->be);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5411 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5412 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5413 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5414 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5415 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5416 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5417 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5418
5419 if (ret == 0)
5420 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5421 else if (ret < 0) {
5422 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5423 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5424 http_capture_bad_message(&s->fe->invalid_req, s, msg, HTTP_MSG_CHUNK_CRLF, s->be);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5425 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5426 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5427 /* we're in MSG_CHUNK_SIZE now */
5428 }
5429 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5430 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5431
5432 if (ret == 0)
5433 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5434 else if (ret < 0) {
5435 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5436 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5437 http_capture_bad_message(&s->fe->invalid_req, s, msg, HTTP_MSG_TRAILERS, s->be);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5438 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5439 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5440 /* we're in HTTP_MSG_DONE now */
5441 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5442 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5443 int old_state = msg->msg_state;
5444
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5445 /* other states, DONE...TUNNEL */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5446
5447 /* we may have some pending data starting at req->buf->p
5448 * such as last chunk of data or trailers.
5449 */
5450 b_adv(req->buf, msg->next);
Willy Tarreaub4d05092014-09-01 20:35:55 +0200[diff] [blame]5451 if (unlikely(!(s->req->flags & CF_WROTE_DATA)))
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5452 msg->sov -= msg->next;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5453 msg->next = 0;
5454
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5455 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5456 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5457 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5458 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5459 if (http_resync_states(s)) {
5460 /* some state changes occurred, maybe the analyser
5461 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5462 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5463 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5464 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5465 /* request errors are most likely due to
5466 * the server aborting the transfer.
5467 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5468 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5469 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5470 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5471 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5472 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5473 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5474 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5475 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5476
5477 /* If "option abortonclose" is set on the backend, we
5478 * want to monitor the client's connection and forward
5479 * any shutdown notification to the server, which will
5480 * decide whether to close or to go on processing the
5481 * request.
5482 */
5483 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5484 channel_auto_read(req);
5485 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5486 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5487 else if (s->txn.meth == HTTP_METH_POST) {
5488 /* POST requests may require to read extra CRLF
5489 * sent by broken browsers and which could cause
5490 * an RST to be sent upon close on some systems
5491 * (eg: Linux).
5492 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5493 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5494 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5495
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5496 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5497 }
5498 }
5499
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5500 missing_data:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5501 /* we may have some pending data starting at req->buf->p */
5502 b_adv(req->buf, msg->next);
Willy Tarreaub4d05092014-09-01 20:35:55 +0200[diff] [blame]5503 if (unlikely(!(s->req->flags & CF_WROTE_DATA)))
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5504 msg->sov -= msg->next + MIN(msg->chunk_len, req->buf->i);
5505
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5506 msg->next = 0;
5507 msg->chunk_len -= channel_forward(req, msg->chunk_len);
5508
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5509 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5510 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5511 if (!(s->flags & SN_ERR_MASK))
5512 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5513 if (!(s->flags & SN_FINST_MASK)) {
5514 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5515 s->flags |= SN_FINST_H;
5516 else
5517 s->flags |= SN_FINST_D;
5518 }
5519
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5520 s->fe->fe_counters.cli_aborts++;
5521 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5522 if (objt_server(s->target))
5523 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5524
5525 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5526 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5527
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5528 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5529 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5530 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5531
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5532 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5533 * 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]5534 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5535 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5536 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5537
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5538 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5539 * 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]5540 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5541 * modes are already handled by the stream sock layer. We must not do
5542 * this in content-length mode because it could present the MSG_MORE
5543 * flag with the last block of forwarded data, which would cause an
5544 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5545 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5546 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5547 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5548
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5549 return 0;
5550
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5551 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5552 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5553 if (s->listener->counters)
5554 s->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5555
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5556 return_bad_req_stats_ok:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5557 /* we may have some pending data starting at req->buf->p */
5558 b_adv(req->buf, msg->next);
5559 msg->next = 0;
5560
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5561 txn->req.msg_state = HTTP_MSG_ERROR;
5562 if (txn->status) {
5563 /* Note: we don't send any error if some data were already sent */
5564 stream_int_retnclose(req->prod, NULL);
5565 } else {
5566 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5567 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5568 }
5569 req->analysers = 0;
5570 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5571
5572 if (!(s->flags & SN_ERR_MASK))
5573 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5574 if (!(s->flags & SN_FINST_MASK)) {
5575 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5576 s->flags |= SN_FINST_H;
5577 else
5578 s->flags |= SN_FINST_D;
5579 }
5580 return 0;
5581
5582 aborted_xfer:
5583 txn->req.msg_state = HTTP_MSG_ERROR;
5584 if (txn->status) {
5585 /* Note: we don't send any error if some data were already sent */
5586 stream_int_retnclose(req->prod, NULL);
5587 } else {
5588 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5589 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5590 }
5591 req->analysers = 0;
5592 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5593
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5594 s->fe->fe_counters.srv_aborts++;
5595 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5596 if (objt_server(s->target))
5597 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5598
5599 if (!(s->flags & SN_ERR_MASK))
5600 s->flags |= SN_ERR_SRVCL;
5601 if (!(s->flags & SN_FINST_MASK)) {
5602 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5603 s->flags |= SN_FINST_H;
5604 else
5605 s->flags |= SN_FINST_D;
5606 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5607 return 0;
5608}
5609
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5610/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5611 * processing can continue on next analysers, or zero if it either needs more
5612 * data or wants to immediately abort the response (eg: timeout, error, ...). It
5613 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
5614 * when it has nothing left to do, and may remove any analyser when it wants to
5615 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5616 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5617int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5618{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5619 struct http_txn *txn = &s->txn;
5620 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5621 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5622 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5623 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5624 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5625
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5626 DPRINTF(stderr,"[%u] %s: session=%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]5627 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5628 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5629 rep,
5630 rep->rex, rep->wex,
5631 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5632 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5633 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5634
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5635 /*
5636 * Now parse the partial (or complete) lines.
5637 * We will check the response syntax, and also join multi-line
5638 * headers. An index of all the lines will be elaborated while
5639 * parsing.
5640 *
5641 * For the parsing, we use a 28 states FSM.
5642 *
5643 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5644 * rep->buf->p = beginning of response
5645 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5646 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5647 * msg->eol = end of current header or line (LF or CRLF)
5648 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5649 */
5650
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5651 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5652 /* There's a protected area at the end of the buffer for rewriting
5653 * purposes. We don't want to start to parse the request if the
5654 * protected area is affected, because we may have to move processed
5655 * data later, which is much more complicated.
5656 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5657 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5658 if (unlikely(!channel_reserved(rep))) {
5659 /* some data has still not left the buffer, wake us once that's done */
5660 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5661 goto abort_response;
5662 channel_dont_close(rep);
5663 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5664 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5665 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5666 }
5667
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5668 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5669 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5670 buffer_slow_realign(rep->buf);
5671
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5672 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5673 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5674 }
5675
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5676 /* 1: we might have to print this header in debug mode */
5677 if (unlikely((global.mode & MODE_DEBUG) &&
5678 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau8767b132014-10-21 19:36:09 +0200[diff] [blame]5679 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5680 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5681
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5682 sol = rep->buf->p;
5683 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5684 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5685
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5686 sol += hdr_idx_first_pos(&txn->hdr_idx);
5687 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5688
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5689 while (cur_idx) {
5690 eol = sol + txn->hdr_idx.v[cur_idx].len;
5691 debug_hdr("srvhdr", s, sol, eol);
5692 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5693 cur_idx = txn->hdr_idx.v[cur_idx].next;
5694 }
5695 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5696
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5697 /*
5698 * Now we quickly check if we have found a full valid response.
5699 * If not so, we check the FD and buffer states before leaving.
5700 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5701 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5702 * responses are checked first.
5703 *
5704 * Depending on whether the client is still there or not, we
5705 * may send an error response back or not. Note that normally
5706 * we should only check for HTTP status there, and check I/O
5707 * errors somewhere else.
5708 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5709
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5710 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5711 /* Invalid response */
5712 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5713 /* we detected a parsing error. We want to archive this response
5714 * in the dedicated proxy area for later troubleshooting.
5715 */
5716 hdr_response_bad:
5717 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5718 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5719
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5720 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5721 if (objt_server(s->target)) {
5722 objt_server(s->target)->counters.failed_resp++;
5723 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5724 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5725 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5726 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5727 rep->analysers = 0;
5728 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5729 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5730 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5731 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5732
5733 if (!(s->flags & SN_ERR_MASK))
5734 s->flags |= SN_ERR_PRXCOND;
5735 if (!(s->flags & SN_FINST_MASK))
5736 s->flags |= SN_FINST_H;
5737
5738 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5739 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5740
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5741 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5742 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5743 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5744 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5745 goto hdr_response_bad;
5746 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5747
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5748 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5749 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5750 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5751 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5752 else if (txn->flags & TX_NOT_FIRST)
5753 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5754
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5755 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5756 if (objt_server(s->target)) {
5757 objt_server(s->target)->counters.failed_resp++;
5758 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5759 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5760
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5761 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5762 rep->analysers = 0;
5763 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5764 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5765 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5766 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5767
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5768 if (!(s->flags & SN_ERR_MASK))
5769 s->flags |= SN_ERR_SRVCL;
5770 if (!(s->flags & SN_FINST_MASK))
5771 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5772 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5773 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5774
Willy Tarreau2a4f5112014-06-23 15:22:31 +0200[diff] [blame]5775 /* read timeout : return a 504 to the client. */
5776 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5777 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5778 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5779 else if (txn->flags & TX_NOT_FIRST)
5780 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5781
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5782 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5783 if (objt_server(s->target)) {
5784 objt_server(s->target)->counters.failed_resp++;
5785 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5786 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5787
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5788 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5789 rep->analysers = 0;
5790 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5791 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5792 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5793 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5794
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5795 if (!(s->flags & SN_ERR_MASK))
5796 s->flags |= SN_ERR_SRVTO;
5797 if (!(s->flags & SN_FINST_MASK))
5798 s->flags |= SN_FINST_H;
5799 return 0;
5800 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5801
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5802 /* client abort with an abortonclose */
5803 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5804 s->fe->fe_counters.cli_aborts++;
5805 s->be->be_counters.cli_aborts++;
5806 if (objt_server(s->target))
5807 objt_server(s->target)->counters.cli_aborts++;
5808
5809 rep->analysers = 0;
5810 channel_auto_close(rep);
5811
5812 txn->status = 400;
5813 bi_erase(rep);
5814 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5815
5816 if (!(s->flags & SN_ERR_MASK))
5817 s->flags |= SN_ERR_CLICL;
5818 if (!(s->flags & SN_FINST_MASK))
5819 s->flags |= SN_FINST_H;
5820
5821 /* process_session() will take care of the error */
5822 return 0;
5823 }
5824
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5825 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5826 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5827 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5828 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5829 else if (txn->flags & TX_NOT_FIRST)
5830 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5831
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5832 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5833 if (objt_server(s->target)) {
5834 objt_server(s->target)->counters.failed_resp++;
5835 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5836 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5837
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5838 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5839 rep->analysers = 0;
5840 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5841 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5842 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5843 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5844
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5845 if (!(s->flags & SN_ERR_MASK))
5846 s->flags |= SN_ERR_SRVCL;
5847 if (!(s->flags & SN_FINST_MASK))
5848 s->flags |= SN_FINST_H;
5849 return 0;
5850 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5851
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5852 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5853 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5854 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5855 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5856 else if (txn->flags & TX_NOT_FIRST)
5857 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5858
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5859 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5860 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5861 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5862
5863 if (!(s->flags & SN_ERR_MASK))
5864 s->flags |= SN_ERR_CLICL;
5865 if (!(s->flags & SN_FINST_MASK))
5866 s->flags |= SN_FINST_H;
5867
5868 /* process_session() will take care of the error */
5869 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5870 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5871
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5872 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5873 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5874 return 0;
5875 }
5876
5877 /* More interesting part now : we know that we have a complete
5878 * response which at least looks like HTTP. We have an indicator
5879 * of each header's length, so we can parse them quickly.
5880 */
5881
5882 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5883 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5884
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5885 /*
5886 * 1: get the status code
5887 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5888 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5889 if (n < 1 || n > 5)
5890 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5891 /* when the client triggers a 4xx from the server, it's most often due
5892 * to a missing object or permission. These events should be tracked
5893 * because if they happen often, it may indicate a brute force or a
5894 * vulnerability scan.
5895 */
5896 if (n == 4)
5897 session_inc_http_err_ctr(s);
5898
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5899 if (objt_server(s->target))
5900 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5901
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5902 /* check if the response is HTTP/1.1 or above */
5903 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5904 ((rep->buf->p[5] > '1') ||
5905 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5906 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5907
5908 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5909 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]5910
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5911 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5912 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5913
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5914 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]5915
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5916 /* Adjust server's health based on status code. Note: status codes 501
5917 * and 505 are triggered on demand by client request, so we must not
5918 * count them as server failures.
5919 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5920 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5921 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5922 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5923 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5924 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5925 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5926
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5927 /*
5928 * 2: check for cacheability.
5929 */
5930
5931 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5932 case 100:
5933 /*
5934 * We may be facing a 100-continue response, in which case this
5935 * is not the right response, and we're waiting for the next one.
5936 * Let's allow this response to go to the client and wait for the
5937 * next one.
5938 */
5939 hdr_idx_init(&txn->hdr_idx);
5940 msg->next -= channel_forward(rep, msg->next);
5941 msg->msg_state = HTTP_MSG_RPBEFORE;
5942 txn->status = 0;
5943 s->logs.t_data = -1; /* was not a response yet */
5944 goto next_one;
5945
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5946 case 200:
5947 case 203:
5948 case 206:
5949 case 300:
5950 case 301:
5951 case 410:
5952 /* RFC2616 @13.4:
5953 * "A response received with a status code of
5954 * 200, 203, 206, 300, 301 or 410 MAY be stored
5955 * by a cache (...) unless a cache-control
5956 * directive prohibits caching."
5957 *
5958 * RFC2616 @9.5: POST method :
5959 * "Responses to this method are not cacheable,
5960 * unless the response includes appropriate
5961 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5962 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5963 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5964 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5965 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5966 break;
5967 default:
5968 break;
5969 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5970
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5971 /*
5972 * 3: we may need to capture headers
5973 */
5974 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5975 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5976 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5977 txn->rsp.cap, s->fe->rsp_cap);
5978
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5979 /* 4: determine the transfer-length.
5980 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5981 * the presence of a message-body in a RESPONSE and its transfer length
5982 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5983 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5984 * All responses to the HEAD request method MUST NOT include a
5985 * message-body, even though the presence of entity-header fields
5986 * might lead one to believe they do. All 1xx (informational), 204
5987 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5988 * message-body. All other responses do include a message-body,
5989 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5990 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5991 * 1. Any response which "MUST NOT" include a message-body (such as the
5992 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5993 * always terminated by the first empty line after the header fields,
5994 * regardless of the entity-header fields present in the message.
5995 *
5996 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5997 * the "chunked" transfer-coding (Section 6.2) is used, the
5998 * transfer-length is defined by the use of this transfer-coding.
5999 * If a Transfer-Encoding header field is present and the "chunked"
6000 * transfer-coding is not present, the transfer-length is defined by
6001 * the sender closing the connection.
6002 *
6003 * 3. If a Content-Length header field is present, its decimal value in
6004 * OCTETs represents both the entity-length and the transfer-length.
6005 * If a message is received with both a Transfer-Encoding header
6006 * field and a Content-Length header field, the latter MUST be ignored.
6007 *
6008 * 4. If the message uses the media type "multipart/byteranges", and
6009 * the transfer-length is not otherwise specified, then this self-
6010 * delimiting media type defines the transfer-length. This media
6011 * type MUST NOT be used unless the sender knows that the recipient
6012 * can parse it; the presence in a request of a Range header with
6013 * multiple byte-range specifiers from a 1.1 client implies that the
6014 * client can parse multipart/byteranges responses.
6015 *
6016 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6017 */
6018
6019 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6020 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6021 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6022 * FIXME: should we parse anyway and return an error on chunked encoding ?
6023 */
6024 if (txn->meth == HTTP_METH_HEAD ||
6025 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6026 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6027 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]6028 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6029 goto skip_content_length;
6030 }
6031
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6032 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6033 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6034 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6035 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6036 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6037 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6038 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6039 /* bad transfer-encoding (chunked followed by something else) */
6040 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6041 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6042 break;
6043 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6044 }
6045
6046 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
6047 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6048 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6049 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6050 signed long long cl;
6051
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6052 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6053 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6054 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6055 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6056
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6057 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6058 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6059 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6060 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6061
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6062 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6063 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6064 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6065 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6066
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6067 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6068 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6069 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6070 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6071
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6072 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6073 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6074 }
6075
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6076 if (s->fe->comp || s->be->comp)
6077 select_compression_response_header(s, rep->buf);
6078
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6079skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6080 /* Now we have to check if we need to modify the Connection header.
6081 * This is more difficult on the response than it is on the request,
6082 * because we can have two different HTTP versions and we don't know
6083 * how the client will interprete a response. For instance, let's say
6084 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6085 * HTTP/1.1 response without any header. Maybe it will bound itself to
6086 * HTTP/1.0 because it only knows about it, and will consider the lack
6087 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6088 * the lack of header as a keep-alive. Thus we will use two flags
6089 * indicating how a request MAY be understood by the client. In case
6090 * of multiple possibilities, we'll fix the header to be explicit. If
6091 * ambiguous cases such as both close and keepalive are seen, then we
6092 * will fall back to explicit close. Note that we won't take risks with
6093 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6094 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6095 */
6096
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6097 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6098 txn->status == 101)) {
6099 /* Either we've established an explicit tunnel, or we're
6100 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6101 * to understand the next protocols. We have to switch to tunnel
6102 * mode, so that we transfer the request and responses then let
6103 * this protocol pass unmodified. When we later implement specific
6104 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6105 * header which contains information about that protocol for
6106 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6107 */
6108 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6109 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6110 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6111 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6112 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6113 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6114 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6115
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6116 /* this situation happens when combining pretend-keepalive with httpclose. */
6117 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6118 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6119 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6120 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6121
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6122 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6123 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6124 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6125 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6126
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6127 /* now adjust header transformations depending on current state */
6128 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6129 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6130 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6131 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6132 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6133 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6134 else { /* SCL / KAL */
6135 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6136 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6137 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6138 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6139
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6140 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6141 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6142
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6143 /* Some keep-alive responses are converted to Server-close if
6144 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6145 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6146 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6147 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6148 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6149 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6150 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6151 }
6152
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6153 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6154 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6155
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6156 /* end of job, return OK */
6157 rep->analysers &= ~an_bit;
6158 rep->analyse_exp = TICK_ETERNITY;
6159 channel_auto_close(rep);
6160 return 1;
6161
6162 abort_keep_alive:
6163 /* A keep-alive request to the server failed on a network error.
6164 * The client is required to retry. We need to close without returning
6165 * any other information so that the client retries.
6166 */
6167 txn->status = 0;
6168 rep->analysers = 0;
6169 s->req->analysers = 0;
6170 channel_auto_close(rep);
6171 s->logs.logwait = 0;
6172 s->logs.level = 0;
6173 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
6174 bi_erase(rep);
6175 stream_int_retnclose(rep->cons, NULL);
6176 return 0;
6177}
6178
6179/* This function performs all the processing enabled for the current response.
6180 * It normally returns 1 unless it wants to break. It relies on buffers flags,
6181 * and updates s->rep->analysers. It might make sense to explode it into several
6182 * other functions. It works like process_request (see indications above).
6183 */
6184int http_process_res_common(struct session *s, struct channel *rep, int an_bit, struct proxy *px)
6185{
6186 struct http_txn *txn = &s->txn;
6187 struct http_msg *msg = &txn->rsp;
6188 struct proxy *cur_proxy;
6189 struct cond_wordlist *wl;
6190 struct http_res_rule *http_res_last_rule = NULL;
6191
6192 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
6193 now_ms, __FUNCTION__,
6194 s,
6195 rep,
6196 rep->rex, rep->wex,
6197 rep->flags,
6198 rep->buf->i,
6199 rep->analysers);
6200
6201 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6202 return 0;
6203
6204 rep->analysers &= ~an_bit;
6205 rep->analyse_exp = TICK_ETERNITY;
6206
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6207 /* The stats applet needs to adjust the Connection header but we don't
6208 * apply any filter there.
6209 */
6210 if (unlikely(objt_applet(s->target) == &http_stats_applet))
6211 goto skip_filters;
6212
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6213 /*
6214 * We will have to evaluate the filters.
6215 * As opposed to version 1.2, now they will be evaluated in the
6216 * filters order and not in the header order. This means that
6217 * each filter has to be validated among all headers.
6218 *
6219 * Filters are tried with ->be first, then with ->fe if it is
6220 * different from ->be.
6221 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6222
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6223 cur_proxy = s->be;
6224 while (1) {
6225 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6226
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6227 /* evaluate http-response rules */
6228 if (!http_res_last_rule)
6229 http_res_last_rule = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s, txn);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6230
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6231 /* try headers filters */
6232 if (rule_set->rsp_exp != NULL) {
6233 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6234 return_bad_resp:
6235 if (objt_server(s->target)) {
6236 objt_server(s->target)->counters.failed_resp++;
6237 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6238 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6239 s->be->be_counters.failed_resp++;
6240 return_srv_prx_502:
6241 rep->analysers = 0;
6242 txn->status = 502;
6243 s->logs.t_data = -1; /* was not a valid response */
6244 rep->prod->flags |= SI_FL_NOLINGER;
6245 bi_erase(rep);
6246 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
6247 if (!(s->flags & SN_ERR_MASK))
6248 s->flags |= SN_ERR_PRXCOND;
6249 if (!(s->flags & SN_FINST_MASK))
6250 s->flags |= SN_FINST_H;
6251 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6252 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6253 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6254
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6255 /* has the response been denied ? */
6256 if (txn->flags & TX_SVDENY) {
6257 if (objt_server(s->target))
6258 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6259
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6260 s->be->be_counters.denied_resp++;
6261 s->fe->fe_counters.denied_resp++;
6262 if (s->listener->counters)
6263 s->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6264
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6265 goto return_srv_prx_502;
6266 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6267
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6268 /* add response headers from the rule sets in the same order */
6269 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6270 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6271 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6272 if (wl->cond) {
6273 int ret = acl_exec_cond(wl->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
6274 ret = acl_pass(ret);
6275 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6276 ret = !ret;
6277 if (!ret)
6278 continue;
6279 }
6280 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6281 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6282 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6283
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6284 /* check whether we're already working on the frontend */
6285 if (cur_proxy == s->fe)
6286 break;
6287 cur_proxy = s->fe;
6288 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6289
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6290 /* OK that's all we can do for 1xx responses */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6291 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6292 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6293
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6294 /*
6295 * Now check for a server cookie.
6296 */
6297 if (s->be->cookie_name || s->be->appsession_name || s->fe->capture_name ||
6298 (s->be->options & PR_O_CHK_CACHE))
6299 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6300
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6301 /*
6302 * Check for cache-control or pragma headers if required.
6303 */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6304 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]6305 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6306
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6307 /*
6308 * Add server cookie in the response if needed
6309 */
6310 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6311 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
6312 (!(s->flags & SN_DIRECT) ||
6313 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6314 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6315 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6316 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6317 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
6318 !(s->flags & SN_IGNORE_PRST)) {
6319 /* the server is known, it's not the one the client requested, or the
6320 * cookie's last seen date needs to be refreshed. We have to
6321 * insert a set-cookie here, except if we want to insert only on POST
6322 * requests and this one isn't. Note that servers which don't have cookies
6323 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6324 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6325 if (!objt_server(s->target)->cookie) {
6326 chunk_printf(&trash,
6327 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6328 s->be->cookie_name);
6329 }
6330 else {
6331 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]6332
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6333 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6334 /* emit last_date, which is mandatory */
6335 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6336 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6337 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6338
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6339 if (s->be->cookie_maxlife) {
6340 /* emit first_date, which is either the original one or
6341 * the current date.
6342 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6343 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6344 s30tob64(txn->cookie_first_date ?
6345 txn->cookie_first_date >> 2 :
6346 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6347 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6348 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6349 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6350 chunk_appendf(&trash, "; path=/");
6351 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6352
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6353 if (s->be->cookie_domain)
6354 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6355
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6356 if (s->be->ck_opts & PR_CK_HTTPONLY)
6357 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6358
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6359 if (s->be->ck_opts & PR_CK_SECURE)
6360 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6361
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6362 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6363 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6364
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6365 txn->flags &= ~TX_SCK_MASK;
6366 if (objt_server(s->target)->cookie && (s->flags & SN_DIRECT))
6367 /* the server did not change, only the date was updated */
6368 txn->flags |= TX_SCK_UPDATED;
6369 else
6370 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6371
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6372 /* Here, we will tell an eventual cache on the client side that we don't
6373 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6374 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6375 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6376 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6377 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6378
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6379 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6380
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6381 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6382 "Cache-control: private", 22) < 0))
6383 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6384 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6385 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6386
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6387 /*
6388 * Check if result will be cacheable with a cookie.
6389 * We'll block the response if security checks have caught
6390 * nasty things such as a cacheable cookie.
6391 */
6392 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6393 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6394 (s->be->options & PR_O_CHK_CACHE)) {
6395 /* we're in presence of a cacheable response containing
6396 * a set-cookie header. We'll block it as requested by
6397 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6398 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6399 if (objt_server(s->target))
6400 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6401
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6402 s->be->be_counters.denied_resp++;
6403 s->fe->fe_counters.denied_resp++;
6404 if (s->listener->counters)
6405 s->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6406
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6407 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6408 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6409 send_log(s->be, LOG_ALERT,
6410 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6411 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6412 goto return_srv_prx_502;
6413 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6414
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6415 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6416 /*
6417 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6418 * If an "Upgrade" token is found, the header is left untouched in order
6419 * not to have to deal with some client bugs : some of them fail an upgrade
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6420 * if anything but "Upgrade" is present in the Connection header. We don't
6421 * want to touch any 101 response either since it's switching to another
6422 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6423 */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6424 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6425 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
6426 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6427 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6428 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6429
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6430 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6431 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6432 /* we want a keep-alive response here. Keep-alive header
6433 * required if either side is not 1.1.
6434 */
6435 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6436 want_flags |= TX_CON_KAL_SET;
6437 }
6438 else {
6439 /* we want a close response here. Close header required if
6440 * the server is 1.1, regardless of the client.
6441 */
6442 if (msg->flags & HTTP_MSGF_VER_11)
6443 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6444 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6445
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6446 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6447 http_change_connection_header(txn, msg, want_flags);
6448 }
6449
6450 skip_header_mangling:
6451 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
6452 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
6453 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6454
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6455 /* if the user wants to log as soon as possible, without counting
6456 * bytes from the server, then this is the right moment. We have
6457 * to temporarily assign bytes_out to log what we currently have.
6458 */
6459 if (!LIST_ISEMPTY(&s->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
6460 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6461 s->logs.bytes_out = txn->rsp.eoh;
6462 s->do_log(s);
6463 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6464 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6465 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6466}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6467
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6468/* This function is an analyser which forwards response body (including chunk
6469 * sizes if any). It is called as soon as we must forward, even if we forward
6470 * zero byte. The only situation where it must not be called is when we're in
6471 * tunnel mode and we want to forward till the close. It's used both to forward
6472 * remaining data and to resync after end of body. It expects the msg_state to
6473 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
6474 * read more data, or 1 once we can go on with next request or end the session.
Willy Tarreaud3510212014-04-21 11:24:13 +0200[diff] [blame]6475 *
6476 * It is capable of compressing response data both in content-length mode and
6477 * in chunked mode. The state machines follows different flows depending on
6478 * whether content-length and chunked modes are used, since there are no
6479 * trailers in content-length :
6480 *
6481 * chk-mode cl-mode
6482 * ,----- BODY -----.
6483 * / \
6484 * V size > 0 V chk-mode
6485 * .--> SIZE -------------> DATA -------------> CRLF
6486 * | | size == 0 | last byte |
6487 * | v final crlf v inspected |
6488 * | TRAILERS -----------> DONE |
6489 * | |
6490 * `----------------------------------------------'
6491 *
6492 * Compression only happens in the DATA state, and must be flushed in final
6493 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6494 * is performed at once on final states for all bytes parsed, or when leaving
6495 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6496 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6497int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6498{
6499 struct http_txn *txn = &s->txn;
6500 struct http_msg *msg = &s->txn.rsp;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6501 static struct buffer *tmpbuf = NULL;
6502 int compressing = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6503 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6504
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6505 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6506 return 0;
6507
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6508 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]6509 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]6510 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6511 /* Output closed while we were sending data. We must abort and
6512 * wake the other side up.
6513 */
6514 msg->msg_state = HTTP_MSG_ERROR;
6515 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6516 return 1;
6517 }
6518
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6519 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6520 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6521
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]6522 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6523 /* we have msg->sov which points to the first byte of message
6524 * body, and res->buf.p still points to the beginning of the
6525 * message. We forward the headers now, as we don't need them
6526 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6527 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6528 b_adv(res->buf, msg->sov);
6529 msg->next -= msg->sov;
6530 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6531
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6532 /* The previous analysers guarantee that the state is somewhere
6533 * between MSG_BODY and the first MSG_DATA. So msg->sol and
6534 * msg->next are always correct.
6535 */
6536 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
6537 if (msg->flags & HTTP_MSGF_TE_CHNK)
6538 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6539 else
6540 msg->msg_state = HTTP_MSG_DATA;
6541 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6542 }
6543
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6544 if (res->to_forward) {
6545 /* We can't process the buffer's contents yet */
6546 res->flags |= CF_WAKE_WRITE;
6547 goto missing_data;
6548 }
6549
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6550 if (unlikely(s->comp_algo != NULL) && msg->msg_state < HTTP_MSG_TRAILERS) {
6551 /* We need a compression buffer in the DATA state to put the
6552 * output of compressed data, and in CRLF state to let the
6553 * TRAILERS state finish the job of removing the trailing CRLF.
6554 */
6555 if (unlikely(tmpbuf == NULL)) {
6556 /* this is the first time we need the compression buffer */
6557 tmpbuf = pool_alloc2(pool2_buffer);
6558 if (tmpbuf == NULL)
6559 goto aborted_xfer; /* no memory */
6560 }
6561
6562 ret = http_compression_buffer_init(s, res->buf, tmpbuf);
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6563 if (ret < 0) {
6564 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6565 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6566 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6567 compressing = 1;
6568 }
6569
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6570 while (1) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6571 switch (msg->msg_state - HTTP_MSG_DATA) {
6572 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6573 /* we may have some pending data starting at res->buf->p */
6574 if (unlikely(s->comp_algo)) {
Willy Tarreau7f2f8d52014-04-18 00:20:14 +0200[diff] [blame]6575 ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6576 if (ret < 0)
6577 goto aborted_xfer;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6578
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6579 if (msg->chunk_len) {
6580 /* input empty or output full */
6581 if (res->buf->i > msg->next)
6582 res->flags |= CF_WAKE_WRITE;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6583 goto missing_data;
6584 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6585 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6586 else {
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6587 if (msg->chunk_len > res->buf->i - msg->next) {
6588 /* output full */
6589 res->flags |= CF_WAKE_WRITE;
6590 goto missing_data;
6591 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6592 msg->next += msg->chunk_len;
6593 msg->chunk_len = 0;
6594 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6595
6596 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6597 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6598 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6599 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6600 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6601 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6602 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6603 /* fall through for HTTP_MSG_CHUNK_CRLF */
6604
6605 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6606 /* we want the CRLF after the data */
6607
6608 ret = http_skip_chunk_crlf(msg);
6609 if (ret == 0)
6610 goto missing_data;
6611 else if (ret < 0) {
6612 if (msg->err_pos >= 0)
6613 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
6614 goto return_bad_res;
6615 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6616 /* we're in MSG_CHUNK_SIZE now, fall through */
6617
6618 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6619 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6620 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6621 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6622 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6623
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6624 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6625 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6626 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6627 else if (ret < 0) {
6628 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6629 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_SIZE, s->fe);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6630 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6631 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6632 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6633 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6634
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6635 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6636 if (unlikely(compressing)) {
6637 /* we need to flush output contents before syncing FSMs */
6638 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6639 compressing = 0;
6640 }
6641
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6642 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6643 if (ret == 0)
6644 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6645 else if (ret < 0) {
6646 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6647 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_TRAILERS, s->fe);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6648 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6649 }
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6650 /* we're in HTTP_MSG_DONE now, fall through */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6651
6652 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6653 /* other states, DONE...TUNNEL */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6654 if (unlikely(compressing)) {
6655 /* we need to flush output contents before syncing FSMs */
6656 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6657 compressing = 0;
6658 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6659
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6660 /* we may have some pending data starting at res->buf->p
6661 * such as a last chunk of data or trailers.
6662 */
6663 b_adv(res->buf, msg->next);
6664 msg->next = 0;
6665
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6666 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6667 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6668 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6669 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6670 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6671
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6672 if (http_resync_states(s)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6673 /* some state changes occurred, maybe the analyser
6674 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6675 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6676 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6677 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6678 /* response errors are most likely due to
6679 * the client aborting the transfer.
6680 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6681 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6682 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6683 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6684 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6685 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6686 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6687 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6688 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6689 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6690 }
6691 }
6692
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6693 missing_data:
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6694 /* we may have some pending data starting at res->buf->p */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6695 if (unlikely(compressing)) {
6696 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6697 compressing = 0;
6698 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6699
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6700 if ((s->comp_algo == NULL || msg->msg_state >= HTTP_MSG_TRAILERS)) {
6701 b_adv(res->buf, msg->next);
6702 msg->next = 0;
6703 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6704 }
6705
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6706 if (res->flags & CF_SHUTW)
6707 goto aborted_xfer;
6708
6709 /* stop waiting for data if the input is closed before the end. If the
6710 * client side was already closed, it means that the client has aborted,
6711 * so we don't want to count this as a server abort. Otherwise it's a
6712 * server abort.
6713 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6714 if (res->flags & CF_SHUTR) {
Willy Tarreaub2c6a782014-04-23 20:29:01 +0200[diff] [blame]6715 if ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6716 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6717 if (!(s->flags & SN_ERR_MASK))
6718 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6719 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6720 if (objt_server(s->target))
6721 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6722 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6723 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6724
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6725 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6726 if (!s->req->analysers)
6727 goto return_bad_res;
6728
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6729 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6730 * 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]6731 * Similarly, with keep-alive on the client side, we don't want to forward a
6732 * close.
6733 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6734 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6735 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6736 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6737 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6738
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6739 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6740 * 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]6741 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6742 * modes are already handled by the stream sock layer. We must not do
6743 * this in content-length mode because it could present the MSG_MORE
6744 * flag with the last block of forwarded data, which would cause an
6745 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6746 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6747 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6748 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6749
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6750 /* the session handler will take care of timeouts and errors */
6751 return 0;
6752
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6753 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6754 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6755 if (objt_server(s->target))
6756 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6757
6758 return_bad_res_stats_ok:
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]6759 if (unlikely(compressing)) {
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6760 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]6761 compressing = 0;
6762 }
6763
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6764 /* we may have some pending data starting at res->buf->p */
6765 if (s->comp_algo == NULL) {
6766 b_adv(res->buf, msg->next);
6767 msg->next = 0;
6768 }
6769
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6770 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6771 /* don't send any error message as we're in the body */
6772 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6773 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6774 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]6775 if (objt_server(s->target))
6776 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6777
6778 if (!(s->flags & SN_ERR_MASK))
6779 s->flags |= SN_ERR_PRXCOND;
6780 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6781 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6782 return 0;
6783
6784 aborted_xfer:
Willy Tarreau6fef8ae2014-04-22 21:22:06 +0200[diff] [blame]6785 if (unlikely(compressing)) {
6786 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
6787 compressing = 0;
6788 }
6789
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6790 txn->rsp.msg_state = HTTP_MSG_ERROR;
6791 /* don't send any error message as we're in the body */
6792 stream_int_retnclose(res->cons, NULL);
6793 res->analysers = 0;
6794 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6795
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6796 s->fe->fe_counters.cli_aborts++;
6797 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6798 if (objt_server(s->target))
6799 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6800
6801 if (!(s->flags & SN_ERR_MASK))
6802 s->flags |= SN_ERR_CLICL;
6803 if (!(s->flags & SN_FINST_MASK))
6804 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6805 return 0;
6806}
6807
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6808/* Iterate the same filter through all request headers.
6809 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6810 * Since it can manage the switch to another backend, it updates the per-proxy
6811 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6812 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6813int apply_filter_to_req_headers(struct session *s, struct channel *req, struct hdr_exp *exp)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6814{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6815 char *cur_ptr, *cur_end, *cur_next;
6816 int cur_idx, old_idx, last_hdr;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6817 struct http_txn *txn = &s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6818 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6819 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6820
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6821 last_hdr = 0;
6822
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6823 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6824 old_idx = 0;
6825
6826 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6827 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6828 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6829 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6830 (exp->action == ACT_ALLOW ||
6831 exp->action == ACT_DENY ||
6832 exp->action == ACT_TARPIT))
6833 return 0;
6834
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6835 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6836 if (!cur_idx)
6837 break;
6838
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6839 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6840 cur_ptr = cur_next;
6841 cur_end = cur_ptr + cur_hdr->len;
6842 cur_next = cur_end + cur_hdr->cr + 1;
6843
6844 /* Now we have one header between cur_ptr and cur_end,
6845 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6846 */
6847
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]6848 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6849 switch (exp->action) {
6850 case ACT_SETBE:
6851 /* It is not possible to jump a second time.
6852 * FIXME: should we return an HTTP/500 here so that
6853 * the admin knows there's a problem ?
6854 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6855 if (s->be != s->fe)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6856 break;
6857
6858 /* Swithing Proxy */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6859 session_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6860 last_hdr = 1;
6861 break;
6862
6863 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6864 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6865 last_hdr = 1;
6866 break;
6867
6868 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6869 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6870 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6871 break;
6872
6873 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6874 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6875 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6876 break;
6877
6878 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]6879 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
6880 if (trash.len < 0)
6881 return -1;
6882
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6883 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6884 /* FIXME: if the user adds a newline in the replacement, the
6885 * index will not be recalculated for now, and the new line
6886 * will not be counted as a new header.
6887 */
6888
6889 cur_end += delta;
6890 cur_next += delta;
6891 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6892 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6893 break;
6894
6895 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6896 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6897 cur_next += delta;
6898
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6899 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6900 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6901 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6902 cur_hdr->len = 0;
6903 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6904 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6905 break;
6906
6907 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6908 }
6909
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6910 /* keep the link from this header to next one in case of later
6911 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6912 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6913 old_idx = cur_idx;
6914 }
6915 return 0;
6916}
6917
6918
6919/* Apply the filter to the request line.
6920 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6921 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6922 * Since it can manage the switch to another backend, it updates the per-proxy
6923 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6924 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6925int apply_filter_to_req_line(struct session *s, struct channel *req, struct hdr_exp *exp)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6926{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6927 char *cur_ptr, *cur_end;
6928 int done;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6929 struct http_txn *txn = &s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6930 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6931
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6932 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6933 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6934 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6935 (exp->action == ACT_ALLOW ||
6936 exp->action == ACT_DENY ||
6937 exp->action == ACT_TARPIT))
6938 return 0;
6939 else if (exp->action == ACT_REMOVE)
6940 return 0;
6941
6942 done = 0;
6943
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6944 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6945 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6946
6947 /* Now we have the request line between cur_ptr and cur_end */
6948
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]6949 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6950 switch (exp->action) {
6951 case ACT_SETBE:
6952 /* It is not possible to jump a second time.
6953 * FIXME: should we return an HTTP/500 here so that
6954 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6955 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6956 if (s->be != s->fe)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6957 break;
6958
6959 /* Swithing Proxy */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6960 session_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6961 done = 1;
6962 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6963
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6964 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6965 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6966 done = 1;
6967 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6968
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6969 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6970 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6971 done = 1;
6972 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6973
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6974 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6975 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6976 done = 1;
6977 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6978
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6979 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]6980 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
6981 if (trash.len < 0)
6982 return -1;
6983
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6984 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6985 /* FIXME: if the user adds a newline in the replacement, the
6986 * index will not be recalculated for now, and the new line
6987 * will not be counted as a new header.
6988 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6989
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6990 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6991 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6992 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6993 HTTP_MSG_RQMETH,
6994 cur_ptr, cur_end + 1,
6995 NULL, NULL);
6996 if (unlikely(!cur_end))
6997 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6998
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6999 /* we have a full request and we know that we have either a CR
7000 * or an LF at <ptr>.
7001 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7002 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7003 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]7004 /* there is no point trying this regex on headers */
7005 return 1;
7006 }
7007 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7008 return done;
7009}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7010
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7011
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7012
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7013/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7014 * Apply all the req filters of proxy <px> to all headers in buffer <req> of session <s>.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7015 * 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]7016 * unparsable request. Since it can manage the switch to another backend, it
7017 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7018 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7019int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7020{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7021 struct http_txn *txn = &s->txn;
7022 struct hdr_exp *exp;
7023
7024 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7025 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7026
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7027 /*
7028 * The interleaving of transformations and verdicts
7029 * makes it difficult to decide to continue or stop
7030 * the evaluation.
7031 */
7032
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7033 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7034 break;
7035
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7036 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7037 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7038 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7039 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7040
7041 /* if this filter had a condition, evaluate it now and skip to
7042 * next filter if the condition does not match.
7043 */
7044 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7045 ret = acl_exec_cond(exp->cond, px, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7046 ret = acl_pass(ret);
7047 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7048 ret = !ret;
7049
7050 if (!ret)
7051 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7052 }
7053
7054 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7055 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7056 if (unlikely(ret < 0))
7057 return -1;
7058
7059 if (likely(ret == 0)) {
7060 /* The filter did not match the request, it can be
7061 * iterated through all headers.
7062 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7063 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7064 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7065 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7066 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7067}
7068
7069
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7070
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7071/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7072 * Try to retrieve the server associated to the appsession.
7073 * If the server is found, it's assigned to the session.
7074 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7075void manage_client_side_appsession(struct session *s, const char *buf, int len) {
7076 struct http_txn *txn = &s->txn;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7077 appsess *asession = NULL;
7078 char *sessid_temp = NULL;
7079
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7080 if (len > s->be->appsession_len) {
7081 len = s->be->appsession_len;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7082 }
7083
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7084 if (s->be->options2 & PR_O2_AS_REQL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7085 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7086 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7087 /* free previously allocated memory as we don't need the session id found in the URL anymore */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7088 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7089 }
7090
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7091 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7092 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7093 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]7094 return;
7095 }
7096
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7097 memcpy(txn->sessid, buf, len);
7098 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7099 }
7100
7101 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
7102 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7103 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]7104 return;
7105 }
7106
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7107 memcpy(sessid_temp, buf, len);
7108 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7109
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7110 asession = appsession_hash_lookup(&(s->be->htbl_proxy), sessid_temp);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7111 /* free previously allocated memory */
7112 pool_free2(apools.sessid, sessid_temp);
7113
7114 if (asession != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7115 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
7116 if (!(s->be->options2 & PR_O2_AS_REQL))
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7117 asession->request_count++;
7118
7119 if (asession->serverid != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7120 struct server *srv = s->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7121
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7122 while (srv) {
7123 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7124 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7125 (s->be->options & PR_O_PERSIST) ||
7126 (s->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7127 /* we found the server and it's usable */
7128 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7129 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7130 s->flags |= SN_DIRECT | SN_ASSIGNED;
7131 s->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]7132
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7133 break;
7134 } else {
7135 txn->flags &= ~TX_CK_MASK;
7136 txn->flags |= TX_CK_DOWN;
7137 }
7138 }
7139 srv = srv->next;
7140 }
7141 }
7142 }
7143}
7144
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7145/* Find the end of a cookie value contained between <s> and <e>. It works the
7146 * same way as with headers above except that the semi-colon also ends a token.
7147 * See RFC2965 for more information. Note that it requires a valid header to
7148 * return a valid result.
7149 */
7150char *find_cookie_value_end(char *s, const char *e)
7151{
7152 int quoted, qdpair;
7153
7154 quoted = qdpair = 0;
7155 for (; s < e; s++) {
7156 if (qdpair) qdpair = 0;
7157 else if (quoted) {
7158 if (*s == '\\') qdpair = 1;
7159 else if (*s == '"') quoted = 0;
7160 }
7161 else if (*s == '"') quoted = 1;
7162 else if (*s == ',' || *s == ';') return s;
7163 }
7164 return s;
7165}
7166
7167/* Delete a value in a header between delimiters <from> and <next> in buffer
7168 * <buf>. The number of characters displaced is returned, and the pointer to
7169 * the first delimiter is updated if required. The function tries as much as
7170 * possible to respect the following principles :
7171 * - replace <from> delimiter by the <next> one unless <from> points to a
7172 * colon, in which case <next> is simply removed
7173 * - set exactly one space character after the new first delimiter, unless
7174 * there are not enough characters in the block being moved to do so.
7175 * - remove unneeded spaces before the previous delimiter and after the new
7176 * one.
7177 *
7178 * It is the caller's responsibility to ensure that :
7179 * - <from> points to a valid delimiter or the colon ;
7180 * - <next> points to a valid delimiter or the final CR/LF ;
7181 * - there are non-space chars before <from> ;
7182 * - there is a CR/LF at or after <next>.
7183 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7184int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7185{
7186 char *prev = *from;
7187
7188 if (*prev == ':') {
7189 /* We're removing the first value, preserve the colon and add a
7190 * space if possible.
7191 */
7192 if (!http_is_crlf[(unsigned char)*next])
7193 next++;
7194 prev++;
7195 if (prev < next)
7196 *prev++ = ' ';
7197
7198 while (http_is_spht[(unsigned char)*next])
7199 next++;
7200 } else {
7201 /* Remove useless spaces before the old delimiter. */
7202 while (http_is_spht[(unsigned char)*(prev-1)])
7203 prev--;
7204 *from = prev;
7205
7206 /* copy the delimiter and if possible a space if we're
7207 * not at the end of the line.
7208 */
7209 if (!http_is_crlf[(unsigned char)*next]) {
7210 *prev++ = *next++;
7211 if (prev + 1 < next)
7212 *prev++ = ' ';
7213 while (http_is_spht[(unsigned char)*next])
7214 next++;
7215 }
7216 }
7217 return buffer_replace2(buf, prev, next, NULL, 0);
7218}
7219
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7220/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7221 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7222 * desirable to call it only when needed. This code is quite complex because
7223 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7224 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7225 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7226void manage_client_side_cookies(struct session *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7227{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7228 struct http_txn *txn = &s->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7229 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7230 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7231 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7232 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7233
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7234 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7235 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7236 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7237
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7238 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7239 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7240 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7241
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7242 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7243 hdr_beg = hdr_next;
7244 hdr_end = hdr_beg + cur_hdr->len;
7245 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7246
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7247 /* We have one full header between hdr_beg and hdr_end, and the
7248 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7249 * "Cookie:" headers.
7250 */
7251
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7252 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7253 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7254 old_idx = cur_idx;
7255 continue;
7256 }
7257
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7258 del_from = NULL; /* nothing to be deleted */
7259 preserve_hdr = 0; /* assume we may kill the whole header */
7260
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7261 /* Now look for cookies. Conforming to RFC2109, we have to support
7262 * attributes whose name begin with a '$', and associate them with
7263 * the right cookie, if we want to delete this cookie.
7264 * So there are 3 cases for each cookie read :
7265 * 1) it's a special attribute, beginning with a '$' : ignore it.
7266 * 2) it's a server id cookie that we *MAY* want to delete : save
7267 * some pointers on it (last semi-colon, beginning of cookie...)
7268 * 3) it's an application cookie : we *MAY* have to delete a previous
7269 * "special" cookie.
7270 * At the end of loop, if a "special" cookie remains, we may have to
7271 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7272 * *MUST* delete it.
7273 *
7274 * Note: RFC2965 is unclear about the processing of spaces around
7275 * the equal sign in the ATTR=VALUE form. A careful inspection of
7276 * the RFC explicitly allows spaces before it, and not within the
7277 * tokens (attrs or values). An inspection of RFC2109 allows that
7278 * too but section 10.1.3 lets one think that spaces may be allowed
7279 * after the equal sign too, resulting in some (rare) buggy
7280 * implementations trying to do that. So let's do what servers do.
7281 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7282 * allowed quoted strings in values, with any possible character
7283 * after a backslash, including control chars and delimitors, which
7284 * causes parsing to become ambiguous. Browsers also allow spaces
7285 * within values even without quotes.
7286 *
7287 * We have to keep multiple pointers in order to support cookie
7288 * removal at the beginning, middle or end of header without
7289 * corrupting the header. All of these headers are valid :
7290 *
7291 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7292 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7293 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7294 * | | | | | | | | |
7295 * | | | | | | | | hdr_end <--+
7296 * | | | | | | | +--> next
7297 * | | | | | | +----> val_end
7298 * | | | | | +-----------> val_beg
7299 * | | | | +--------------> equal
7300 * | | | +----------------> att_end
7301 * | | +---------------------> att_beg
7302 * | +--------------------------> prev
7303 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7304 */
7305
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7306 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7307 /* Iterate through all cookies on this line */
7308
7309 /* find att_beg */
7310 att_beg = prev + 1;
7311 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7312 att_beg++;
7313
7314 /* find att_end : this is the first character after the last non
7315 * space before the equal. It may be equal to hdr_end.
7316 */
7317 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7318
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7319 while (equal < hdr_end) {
7320 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7321 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7322 if (http_is_spht[(unsigned char)*equal++])
7323 continue;
7324 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7325 }
7326
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7327 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7328 * is between <att_beg> and <equal>, both may be identical.
7329 */
7330
7331 /* look for end of cookie if there is an equal sign */
7332 if (equal < hdr_end && *equal == '=') {
7333 /* look for the beginning of the value */
7334 val_beg = equal + 1;
7335 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7336 val_beg++;
7337
7338 /* find the end of the value, respecting quotes */
7339 next = find_cookie_value_end(val_beg, hdr_end);
7340
7341 /* make val_end point to the first white space or delimitor after the value */
7342 val_end = next;
7343 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7344 val_end--;
7345 } else {
7346 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7347 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7348
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7349 /* We have nothing to do with attributes beginning with '$'. However,
7350 * they will automatically be removed if a header before them is removed,
7351 * since they're supposed to be linked together.
7352 */
7353 if (*att_beg == '$')
7354 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7355
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7356 /* Ignore cookies with no equal sign */
7357 if (equal == next) {
7358 /* This is not our cookie, so we must preserve it. But if we already
7359 * scheduled another cookie for removal, we cannot remove the
7360 * complete header, but we can remove the previous block itself.
7361 */
7362 preserve_hdr = 1;
7363 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7364 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7365 val_end += delta;
7366 next += delta;
7367 hdr_end += delta;
7368 hdr_next += delta;
7369 cur_hdr->len += delta;
7370 http_msg_move_end(&txn->req, delta);
7371 prev = del_from;
7372 del_from = NULL;
7373 }
7374 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7375 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7376
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7377 /* if there are spaces around the equal sign, we need to
7378 * strip them otherwise we'll get trouble for cookie captures,
7379 * or even for rewrites. Since this happens extremely rarely,
7380 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7381 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7382 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7383 int stripped_before = 0;
7384 int stripped_after = 0;
7385
7386 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7387 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7388 equal += stripped_before;
7389 val_beg += stripped_before;
7390 }
7391
7392 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7393 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7394 val_beg += stripped_after;
7395 stripped_before += stripped_after;
7396 }
7397
7398 val_end += stripped_before;
7399 next += stripped_before;
7400 hdr_end += stripped_before;
7401 hdr_next += stripped_before;
7402 cur_hdr->len += stripped_before;
7403 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7404 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7405 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7406
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7407 /* First, let's see if we want to capture this cookie. We check
7408 * that we don't already have a client side cookie, because we
7409 * can only capture one. Also as an optimisation, we ignore
7410 * cookies shorter than the declared name.
7411 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7412 if (s->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7413 (val_end - att_beg >= s->fe->capture_namelen) &&
7414 memcmp(att_beg, s->fe->capture_name, s->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7415 int log_len = val_end - att_beg;
7416
7417 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7418 Alert("HTTP logging : out of memory.\n");
7419 } else {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7420 if (log_len > s->fe->capture_len)
7421 log_len = s->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7422 memcpy(txn->cli_cookie, att_beg, log_len);
7423 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7424 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7425 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7426
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7427 /* Persistence cookies in passive, rewrite or insert mode have the
7428 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7429 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7430 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7431 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7432 * For cookies in prefix mode, the form is :
7433 *
7434 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7435 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7436 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7437 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7438 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7439 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7440
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7441 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7442 * have the server ID between val_beg and delim, and the original cookie between
7443 * delim+1 and val_end. Otherwise, delim==val_end :
7444 *
7445 * Cookie: NAME=SRV; # in all but prefix modes
7446 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7447 * | || || | |+-> next
7448 * | || || | +--> val_end
7449 * | || || +---------> delim
7450 * | || |+------------> val_beg
7451 * | || +-------------> att_end = equal
7452 * | |+-----------------> att_beg
7453 * | +------------------> prev
7454 * +-------------------------> hdr_beg
7455 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7456
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7457 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7458 for (delim = val_beg; delim < val_end; delim++)
7459 if (*delim == COOKIE_DELIM)
7460 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7461 } else {
7462 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7463 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7464 /* Now check if the cookie contains a date field, which would
7465 * appear after a vertical bar ('|') just after the server name
7466 * and before the delimiter.
7467 */
7468 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7469 if (vbar1) {
7470 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7471 * right is the last seen date. It is a base64 encoded
7472 * 30-bit value representing the UNIX date since the
7473 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7474 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7475 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7476 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7477 if (val_end - vbar1 >= 5) {
7478 val = b64tos30(vbar1);
7479 if (val > 0)
7480 txn->cookie_last_date = val << 2;
7481 }
7482 /* look for a second vertical bar */
7483 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7484 if (vbar1 && (val_end - vbar1 > 5)) {
7485 val = b64tos30(vbar1 + 1);
7486 if (val > 0)
7487 txn->cookie_first_date = val << 2;
7488 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7489 }
7490 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7491
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7492 /* if the cookie has an expiration date and the proxy wants to check
7493 * it, then we do that now. We first check if the cookie is too old,
7494 * then only if it has expired. We detect strict overflow because the
7495 * time resolution here is not great (4 seconds). Cookies with dates
7496 * in the future are ignored if their offset is beyond one day. This
7497 * allows an admin to fix timezone issues without expiring everyone
7498 * and at the same time avoids keeping unwanted side effects for too
7499 * long.
7500 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7501 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7502 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7503 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7504 txn->flags &= ~TX_CK_MASK;
7505 txn->flags |= TX_CK_OLD;
7506 delim = val_beg; // let's pretend we have not found the cookie
7507 txn->cookie_first_date = 0;
7508 txn->cookie_last_date = 0;
7509 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7510 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7511 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7512 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7513 txn->flags &= ~TX_CK_MASK;
7514 txn->flags |= TX_CK_EXPIRED;
7515 delim = val_beg; // let's pretend we have not found the cookie
7516 txn->cookie_first_date = 0;
7517 txn->cookie_last_date = 0;
7518 }
7519
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7520 /* Here, we'll look for the first running server which supports the cookie.
7521 * This allows to share a same cookie between several servers, for example
7522 * to dedicate backup servers to specific servers only.
7523 * However, to prevent clients from sticking to cookie-less backup server
7524 * when they have incidentely learned an empty cookie, we simply ignore
7525 * empty cookies and mark them as invalid.
7526 * The same behaviour is applied when persistence must be ignored.
7527 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7528 if ((delim == val_beg) || (s->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7529 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7530
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7531 while (srv) {
7532 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7533 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7534 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7535 (s->be->options & PR_O_PERSIST) ||
7536 (s->flags & SN_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7537 /* we found the server and we can use it */
7538 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7539 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7540 s->flags |= SN_DIRECT | SN_ASSIGNED;
7541 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7542 break;
7543 } else {
7544 /* we found a server, but it's down,
7545 * mark it as such and go on in case
7546 * another one is available.
7547 */
7548 txn->flags &= ~TX_CK_MASK;
7549 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7550 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7551 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7552 srv = srv->next;
7553 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7554
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7555 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7556 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7557 txn->flags &= ~TX_CK_MASK;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7558 if ((s->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7559 txn->flags |= TX_CK_UNUSED;
7560 else
7561 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7562 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7563
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7564 /* depending on the cookie mode, we may have to either :
7565 * - delete the complete cookie if we're in insert+indirect mode, so that
7566 * the server never sees it ;
7567 * - remove the server id from the cookie value, and tag the cookie as an
7568 * application cookie so that it does not get accidentely removed later,
7569 * if we're in cookie prefix mode
7570 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7571 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7572 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7573
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7574 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7575 val_end += delta;
7576 next += delta;
7577 hdr_end += delta;
7578 hdr_next += delta;
7579 cur_hdr->len += delta;
7580 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7581
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7582 del_from = NULL;
7583 preserve_hdr = 1; /* we want to keep this cookie */
7584 }
7585 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7586 (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]7587 del_from = prev;
7588 }
7589 } else {
7590 /* This is not our cookie, so we must preserve it. But if we already
7591 * scheduled another cookie for removal, we cannot remove the
7592 * complete header, but we can remove the previous block itself.
7593 */
7594 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7595
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7596 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7597 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7598 if (att_beg >= del_from)
7599 att_beg += delta;
7600 if (att_end >= del_from)
7601 att_end += delta;
7602 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7603 val_end += delta;
7604 next += delta;
7605 hdr_end += delta;
7606 hdr_next += delta;
7607 cur_hdr->len += delta;
7608 http_msg_move_end(&txn->req, delta);
7609 prev = del_from;
7610 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7611 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7612 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7613
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7614 /* Look for the appsession cookie unless persistence must be ignored */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7615 if (!(s->flags & SN_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7616 int cmp_len, value_len;
7617 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7618
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7619 if (s->be->options2 & PR_O2_AS_PFX) {
7620 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
7621 value_begin = att_beg + s->be->appsession_name_len;
7622 value_len = val_end - att_beg - s->be->appsession_name_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7623 } else {
7624 cmp_len = att_end - att_beg;
7625 value_begin = val_beg;
7626 value_len = val_end - val_beg;
7627 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7628
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7629 /* let's see if the cookie is our appcookie */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7630 if (cmp_len == s->be->appsession_name_len &&
7631 memcmp(att_beg, s->be->appsession_name, cmp_len) == 0) {
7632 manage_client_side_appsession(s, value_begin, value_len);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7633 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7634 }
7635
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7636 /* continue with next cookie on this header line */
7637 att_beg = next;
7638 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7639
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7640 /* There are no more cookies on this line.
7641 * We may still have one (or several) marked for deletion at the
7642 * end of the line. We must do this now in two ways :
7643 * - if some cookies must be preserved, we only delete from the
7644 * mark to the end of line ;
7645 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7646 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7647 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7648 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7649 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7650 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7651 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7652 cur_hdr->len += delta;
7653 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7654 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7655
7656 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7657 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7658 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7659 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7660 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7661 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7662 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7663 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7664 }
7665
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7666 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7667 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7668 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7669}
7670
7671
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7672/* Iterate the same filter through all response headers contained in <rtr>.
7673 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7674 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7675int apply_filter_to_resp_headers(struct session *s, struct channel *rtr, struct hdr_exp *exp)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7676{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7677 char *cur_ptr, *cur_end, *cur_next;
7678 int cur_idx, old_idx, last_hdr;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7679 struct http_txn *txn = &s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7680 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7681 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7682
7683 last_hdr = 0;
7684
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7685 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7686 old_idx = 0;
7687
7688 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7689 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7690 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7691 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7692 (exp->action == ACT_ALLOW ||
7693 exp->action == ACT_DENY))
7694 return 0;
7695
7696 cur_idx = txn->hdr_idx.v[old_idx].next;
7697 if (!cur_idx)
7698 break;
7699
7700 cur_hdr = &txn->hdr_idx.v[cur_idx];
7701 cur_ptr = cur_next;
7702 cur_end = cur_ptr + cur_hdr->len;
7703 cur_next = cur_end + cur_hdr->cr + 1;
7704
7705 /* Now we have one header between cur_ptr and cur_end,
7706 * and the next header starts at cur_next.
7707 */
7708
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]7709 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7710 switch (exp->action) {
7711 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7712 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7713 last_hdr = 1;
7714 break;
7715
7716 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7717 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7718 last_hdr = 1;
7719 break;
7720
7721 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7722 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7723 if (trash.len < 0)
7724 return -1;
7725
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7726 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7727 /* FIXME: if the user adds a newline in the replacement, the
7728 * index will not be recalculated for now, and the new line
7729 * will not be counted as a new header.
7730 */
7731
7732 cur_end += delta;
7733 cur_next += delta;
7734 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7735 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7736 break;
7737
7738 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7739 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7740 cur_next += delta;
7741
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7742 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7743 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7744 txn->hdr_idx.used--;
7745 cur_hdr->len = 0;
7746 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7747 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7748 break;
7749
7750 }
7751 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7752
7753 /* keep the link from this header to next one in case of later
7754 * removal of next header.
7755 */
7756 old_idx = cur_idx;
7757 }
7758 return 0;
7759}
7760
7761
7762/* Apply the filter to the status line in the response buffer <rtr>.
7763 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7764 * or -1 if a replacement resulted in an invalid status line.
7765 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7766int apply_filter_to_sts_line(struct session *s, struct channel *rtr, struct hdr_exp *exp)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7767{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7768 char *cur_ptr, *cur_end;
7769 int done;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7770 struct http_txn *txn = &s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7771 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7772
7773
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7774 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7775 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7776 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7777 (exp->action == ACT_ALLOW ||
7778 exp->action == ACT_DENY))
7779 return 0;
7780 else if (exp->action == ACT_REMOVE)
7781 return 0;
7782
7783 done = 0;
7784
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7785 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7786 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7787
7788 /* Now we have the status line between cur_ptr and cur_end */
7789
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]7790 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7791 switch (exp->action) {
7792 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7793 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7794 done = 1;
7795 break;
7796
7797 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7798 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7799 done = 1;
7800 break;
7801
7802 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7803 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7804 if (trash.len < 0)
7805 return -1;
7806
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7807 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7808 /* FIXME: if the user adds a newline in the replacement, the
7809 * index will not be recalculated for now, and the new line
7810 * will not be counted as a new header.
7811 */
7812
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7813 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7814 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7815 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7816 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7817 cur_ptr, cur_end + 1,
7818 NULL, NULL);
7819 if (unlikely(!cur_end))
7820 return -1;
7821
7822 /* we have a full respnse and we know that we have either a CR
7823 * or an LF at <ptr>.
7824 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7825 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]7826 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]7827 /* there is no point trying this regex on headers */
7828 return 1;
7829 }
7830 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7831 return done;
7832}
7833
7834
7835
7836/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7837 * Apply all the resp filters of proxy <px> to all headers in buffer <rtr> of session <s>.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7838 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7839 * unparsable response.
7840 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7841int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7842{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7843 struct http_txn *txn = &s->txn;
7844 struct hdr_exp *exp;
7845
7846 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7847 int ret;
7848
7849 /*
7850 * The interleaving of transformations and verdicts
7851 * makes it difficult to decide to continue or stop
7852 * the evaluation.
7853 */
7854
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7855 if (txn->flags & TX_SVDENY)
7856 break;
7857
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7858 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7859 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7860 exp->action == ACT_PASS)) {
7861 exp = exp->next;
7862 continue;
7863 }
7864
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7865 /* if this filter had a condition, evaluate it now and skip to
7866 * next filter if the condition does not match.
7867 */
7868 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7869 ret = acl_exec_cond(exp->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7870 ret = acl_pass(ret);
7871 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7872 ret = !ret;
7873 if (!ret)
7874 continue;
7875 }
7876
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7877 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7878 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7879 if (unlikely(ret < 0))
7880 return -1;
7881
7882 if (likely(ret == 0)) {
7883 /* The filter did not match the response, it can be
7884 * iterated through all headers.
7885 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7886 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
7887 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7888 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7889 }
7890 return 0;
7891}
7892
7893
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7894/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7895 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7896 * desirable to call it only when needed. This function is also used when we
7897 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7898 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7899void manage_server_side_cookies(struct session *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7900{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7901 struct http_txn *txn = &s->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7902 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7903 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7904 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7905 char *hdr_beg, *hdr_end, *hdr_next;
7906 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7907
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7908 /* Iterate through the headers.
7909 * we start with the start line.
7910 */
7911 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7912 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7913
7914 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7915 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7916 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7917
7918 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7919 hdr_beg = hdr_next;
7920 hdr_end = hdr_beg + cur_hdr->len;
7921 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7922
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7923 /* We have one full header between hdr_beg and hdr_end, and the
7924 * next header starts at hdr_next. We're only interested in
7925 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7926 */
7927
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7928 is_cookie2 = 0;
7929 prev = hdr_beg + 10;
7930 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7931 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7932 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7933 if (!val) {
7934 old_idx = cur_idx;
7935 continue;
7936 }
7937 is_cookie2 = 1;
7938 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7939 }
7940
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7941 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7942 * <prev> points to the colon.
7943 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7944 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7945
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7946 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7947 * check-cache is enabled) and we are not interested in checking
7948 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7949 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7950 if (s->be->cookie_name == NULL &&
7951 s->be->appsession_name == NULL &&
7952 s->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7953 return;
7954
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7955 /* OK so now we know we have to process this response cookie.
7956 * The format of the Set-Cookie header is slightly different
7957 * from the format of the Cookie header in that it does not
7958 * support the comma as a cookie delimiter (thus the header
7959 * cannot be folded) because the Expires attribute described in
7960 * the original Netscape's spec may contain an unquoted date
7961 * with a comma inside. We have to live with this because
7962 * many browsers don't support Max-Age and some browsers don't
7963 * support quoted strings. However the Set-Cookie2 header is
7964 * clean.
7965 *
7966 * We have to keep multiple pointers in order to support cookie
7967 * removal at the beginning, middle or end of header without
7968 * corrupting the header (in case of set-cookie2). A special
7969 * pointer, <scav> points to the beginning of the set-cookie-av
7970 * fields after the first semi-colon. The <next> pointer points
7971 * either to the end of line (set-cookie) or next unquoted comma
7972 * (set-cookie2). All of these headers are valid :
7973 *
7974 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7975 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7976 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7977 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7978 * | | | | | | | | | |
7979 * | | | | | | | | +-> next hdr_end <--+
7980 * | | | | | | | +------------> scav
7981 * | | | | | | +--------------> val_end
7982 * | | | | | +--------------------> val_beg
7983 * | | | | +----------------------> equal
7984 * | | | +------------------------> att_end
7985 * | | +----------------------------> att_beg
7986 * | +------------------------------> prev
7987 * +-----------------------------------------> hdr_beg
7988 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7989
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7990 for (; prev < hdr_end; prev = next) {
7991 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7992
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7993 /* find att_beg */
7994 att_beg = prev + 1;
7995 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7996 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7997
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7998 /* find att_end : this is the first character after the last non
7999 * space before the equal. It may be equal to hdr_end.
8000 */
8001 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8002
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8003 while (equal < hdr_end) {
8004 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8005 break;
8006 if (http_is_spht[(unsigned char)*equal++])
8007 continue;
8008 att_end = equal;
8009 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8010
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8011 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8012 * is between <att_beg> and <equal>, both may be identical.
8013 */
8014
8015 /* look for end of cookie if there is an equal sign */
8016 if (equal < hdr_end && *equal == '=') {
8017 /* look for the beginning of the value */
8018 val_beg = equal + 1;
8019 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8020 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8021
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8022 /* find the end of the value, respecting quotes */
8023 next = find_cookie_value_end(val_beg, hdr_end);
8024
8025 /* make val_end point to the first white space or delimitor after the value */
8026 val_end = next;
8027 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8028 val_end--;
8029 } else {
8030 /* <equal> points to next comma, semi-colon or EOL */
8031 val_beg = val_end = next = equal;
8032 }
8033
8034 if (next < hdr_end) {
8035 /* Set-Cookie2 supports multiple cookies, and <next> points to
8036 * a colon or semi-colon before the end. So skip all attr-value
8037 * pairs and look for the next comma. For Set-Cookie, since
8038 * commas are permitted in values, skip to the end.
8039 */
8040 if (is_cookie2)
8041 next = find_hdr_value_end(next, hdr_end);
8042 else
8043 next = hdr_end;
8044 }
8045
8046 /* Now everything is as on the diagram above */
8047
8048 /* Ignore cookies with no equal sign */
8049 if (equal == val_end)
8050 continue;
8051
8052 /* If there are spaces around the equal sign, we need to
8053 * strip them otherwise we'll get trouble for cookie captures,
8054 * or even for rewrites. Since this happens extremely rarely,
8055 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8056 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8057 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8058 int stripped_before = 0;
8059 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8060
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8061 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8062 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8063 equal += stripped_before;
8064 val_beg += stripped_before;
8065 }
8066
8067 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8068 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8069 val_beg += stripped_after;
8070 stripped_before += stripped_after;
8071 }
8072
8073 val_end += stripped_before;
8074 next += stripped_before;
8075 hdr_end += stripped_before;
8076 hdr_next += stripped_before;
8077 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8078 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8079 }
8080
8081 /* First, let's see if we want to capture this cookie. We check
8082 * that we don't already have a server side cookie, because we
8083 * can only capture one. Also as an optimisation, we ignore
8084 * cookies shorter than the declared name.
8085 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8086 if (s->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8087 txn->srv_cookie == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8088 (val_end - att_beg >= s->fe->capture_namelen) &&
8089 memcmp(att_beg, s->fe->capture_name, s->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8090 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8091 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8092 Alert("HTTP logging : out of memory.\n");
8093 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8094 else {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8095 if (log_len > s->fe->capture_len)
8096 log_len = s->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8097 memcpy(txn->srv_cookie, att_beg, log_len);
8098 txn->srv_cookie[log_len] = 0;
8099 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8100 }
8101
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8102 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8103 /* now check if we need to process it for persistence */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8104 if (!(s->flags & SN_IGNORE_PRST) &&
8105 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8106 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8107 /* assume passive cookie by default */
8108 txn->flags &= ~TX_SCK_MASK;
8109 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8110
8111 /* If the cookie is in insert mode on a known server, we'll delete
8112 * this occurrence because we'll insert another one later.
8113 * 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]8114 * a direct access.
8115 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8116 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8117 /* The "preserve" flag was set, we don't want to touch the
8118 * server's cookie.
8119 */
8120 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8121 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
8122 ((s->flags & SN_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8123 /* this cookie must be deleted */
8124 if (*prev == ':' && next == hdr_end) {
8125 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8126 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8127 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8128 txn->hdr_idx.used--;
8129 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8130 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8131 hdr_next += delta;
8132 http_msg_move_end(&txn->rsp, delta);
8133 /* note: while both invalid now, <next> and <hdr_end>
8134 * are still equal, so the for() will stop as expected.
8135 */
8136 } else {
8137 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8138 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8139 next = prev;
8140 hdr_end += delta;
8141 hdr_next += delta;
8142 cur_hdr->len += delta;
8143 http_msg_move_end(&txn->rsp, delta);
8144 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8145 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8146 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8147 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8148 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8149 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8150 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8151 * with this server since we know it.
8152 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8153 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8154 next += delta;
8155 hdr_end += delta;
8156 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8157 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8158 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8159
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8160 txn->flags &= ~TX_SCK_MASK;
8161 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8162 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8163 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8164 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8165 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8166 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8167 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8168 next += delta;
8169 hdr_end += delta;
8170 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8171 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8172 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8173
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8174 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8175 txn->flags &= ~TX_SCK_MASK;
8176 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8177 }
8178 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]8179 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8180 else if (!(s->flags & SN_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8181 int cmp_len, value_len;
8182 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8183
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8184 if (s->be->options2 & PR_O2_AS_PFX) {
8185 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
8186 value_begin = att_beg + s->be->appsession_name_len;
8187 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]8188 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8189 cmp_len = att_end - att_beg;
8190 value_begin = val_beg;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8191 value_len = MIN(s->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8192 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8193
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8194 if ((cmp_len == s->be->appsession_name_len) &&
8195 (memcmp(att_beg, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8196 /* free a possibly previously allocated memory */
8197 pool_free2(apools.sessid, txn->sessid);
8198
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8199 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8200 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8201 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8202 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]8203 return;
8204 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8205 memcpy(txn->sessid, value_begin, value_len);
8206 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8207 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8208 }
8209 /* that's done for this cookie, check the next one on the same
8210 * line when next != hdr_end (only if is_cookie2).
8211 */
8212 }
8213 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8214 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8215 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8216
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8217 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8218 appsess *asession = NULL;
8219 /* only do insert, if lookup fails */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8220 asession = appsession_hash_lookup(&(s->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8221 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]8222 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8223 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
8224 Alert("Not enough Memory process_srv():asession:calloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8225 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8226 return;
8227 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8228 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
8229
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8230 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
8231 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8232 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8233 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8234 return;
8235 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8236 memcpy(asession->sessid, txn->sessid, s->be->appsession_len);
8237 asession->sessid[s->be->appsession_len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8238
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8239 server_id_len = strlen(objt_server(s->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8240 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8241 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8242 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8243 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8244 return;
8245 }
8246 asession->serverid[0] = '\0';
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8247 memcpy(asession->serverid, objt_server(s->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8248
8249 asession->request_count = 0;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8250 appsession_hash_insert(&(s->be->htbl_proxy), asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8251 }
8252
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8253 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8254 asession->request_count++;
8255 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8256}
8257
8258
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8259/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8260 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8261 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8262void check_response_for_cacheability(struct session *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8263{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8264 struct http_txn *txn = &s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8265 char *p1, *p2;
8266
8267 char *cur_ptr, *cur_end, *cur_next;
8268 int cur_idx;
8269
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8270 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8271 return;
8272
8273 /* Iterate through the headers.
8274 * we start with the start line.
8275 */
8276 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8277 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8278
8279 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8280 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8281 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8282
8283 cur_hdr = &txn->hdr_idx.v[cur_idx];
8284 cur_ptr = cur_next;
8285 cur_end = cur_ptr + cur_hdr->len;
8286 cur_next = cur_end + cur_hdr->cr + 1;
8287
8288 /* We have one full header between cur_ptr and cur_end, and the
8289 * next header starts at cur_next. We're only interested in
8290 * "Cookie:" headers.
8291 */
8292
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8293 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8294 if (val) {
8295 if ((cur_end - (cur_ptr + val) >= 8) &&
8296 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8297 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8298 return;
8299 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8300 }
8301
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8302 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8303 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8304 continue;
8305
8306 /* OK, right now we know we have a cache-control header at cur_ptr */
8307
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8308 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8309
8310 if (p1 >= cur_end) /* no more info */
8311 continue;
8312
8313 /* p1 is at the beginning of the value */
8314 p2 = p1;
8315
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8316 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8317 p2++;
8318
8319 /* we have a complete value between p1 and p2 */
8320 if (p2 < cur_end && *p2 == '=') {
8321 /* we have something of the form no-cache="set-cookie" */
8322 if ((cur_end - p1 >= 21) &&
8323 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8324 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8325 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8326 continue;
8327 }
8328
8329 /* OK, so we know that either p2 points to the end of string or to a comma */
8330 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8331 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8332 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8333 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8334 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8335 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8336 return;
8337 }
8338
8339 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8340 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8341 continue;
8342 }
8343 }
8344}
8345
8346
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8347/*
8348 * Try to retrieve a known appsession in the URI, then the associated server.
8349 * If the server is found, it's assigned to the session.
8350 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8351void get_srv_from_appsession(struct session *s, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8352{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8353 char *end_params, *first_param, *cur_param, *next_param;
8354 char separator;
8355 int value_len;
8356
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8357 int mode = s->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8358
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8359 if (s->be->appsession_name == NULL ||
8360 (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]8361 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8362 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8363
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8364 first_param = NULL;
8365 switch (mode) {
8366 case PR_O2_AS_M_PP:
8367 first_param = memchr(begin, ';', len);
8368 break;
8369 case PR_O2_AS_M_QS:
8370 first_param = memchr(begin, '?', len);
8371 break;
8372 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8373
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8374 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8375 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8376 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8377
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8378 switch (mode) {
8379 case PR_O2_AS_M_PP:
8380 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
8381 end_params = (char *) begin + len;
8382 }
8383 separator = ';';
8384 break;
8385 case PR_O2_AS_M_QS:
8386 end_params = (char *) begin + len;
8387 separator = '&';
8388 break;
8389 default:
8390 /* unknown mode, shouldn't happen */
8391 return;
8392 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8393
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8394 cur_param = next_param = end_params;
8395 while (cur_param > first_param) {
8396 cur_param--;
8397 if ((cur_param[0] == separator) || (cur_param == first_param)) {
8398 /* let's see if this is the appsession parameter */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8399 if ((cur_param + s->be->appsession_name_len + 1 < next_param) &&
8400 ((s->be->options2 & PR_O2_AS_PFX) || cur_param[s->be->appsession_name_len + 1] == '=') &&
8401 (strncasecmp(cur_param + 1, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8402 /* Cool... it's the right one */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8403 cur_param += s->be->appsession_name_len + (s->be->options2 & PR_O2_AS_PFX ? 1 : 2);
8404 value_len = MIN(s->be->appsession_len, next_param - cur_param);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8405 if (value_len > 0) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8406 manage_client_side_appsession(s, cur_param, value_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8407 }
8408 break;
8409 }
8410 next_param = cur_param;
8411 }
8412 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8413#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]8414 Alert("get_srv_from_appsession\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8415 appsession_hash_dump(&(s->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8416#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8417}
8418
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8419/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8420 * 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]8421 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8422 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8423 * 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]8424 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8425 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8426 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8427 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8428int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8429{
8430 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8431 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8432 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8433
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8434 if (!uri_auth)
8435 return 0;
8436
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8437 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]8438 return 0;
8439
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8440 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8441 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8442 return 0;
8443
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8444 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8445 return 0;
8446
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8447 return 1;
8448}
8449
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8450/*
8451 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8452 * By default it tries to report the error position as msg->err_pos. However if
8453 * this one is not set, it will then report msg->next, which is the last known
8454 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8455 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8456 */
8457void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8458 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8459 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8460{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8461 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8462 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8463
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8464 es->len = MIN(chn->buf->i, sizeof(es->buf));
8465 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8466 len1 = MIN(len1, es->len);
8467 len2 = es->len - len1; /* remaining data if buffer wraps */
8468
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8469 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8470 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8471 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8472
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8473 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8474 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8475 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8476 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8477
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8478 es->when = date; // user-visible date
8479 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8480 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8481 es->oe = other_end;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8482 if (objt_conn(s->req->prod->end))
8483 es->src = __objt_conn(s->req->prod->end)->addr.from;
8484 else
8485 memset(&es->src, 0, sizeof(es->src));
8486
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8487 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8488 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8489 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8490 es->s_flags = s->flags;
8491 es->t_flags = s->txn.flags;
8492 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8493 es->b_out = chn->buf->o;
8494 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8495 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8496 es->m_clen = msg->chunk_len;
8497 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8498}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8499
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8500/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8501 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8502 * performed over the whole headers. Otherwise it must contain a valid header
8503 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8504 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8505 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8506 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8507 * -1. The value fetch stops at commas, so this function is suited for use with
8508 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8509 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8510 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8511unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8512 struct hdr_idx *idx, int occ,
8513 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8514{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8515 struct hdr_ctx local_ctx;
8516 char *ptr_hist[MAX_HDR_HISTORY];
8517 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8518 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8519 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8520
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8521 if (!ctx) {
8522 local_ctx.idx = 0;
8523 ctx = &local_ctx;
8524 }
8525
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8526 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8527 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8528 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8529 occ--;
8530 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8531 *vptr = ctx->line + ctx->val;
8532 *vlen = ctx->vlen;
8533 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8534 }
8535 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8536 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8537 }
8538
8539 /* negative occurrence, we scan all the list then walk back */
8540 if (-occ > MAX_HDR_HISTORY)
8541 return 0;
8542
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8543 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8544 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8545 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8546 len_hist[hist_ptr] = ctx->vlen;
8547 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8548 hist_ptr = 0;
8549 found++;
8550 }
8551 if (-occ > found)
8552 return 0;
8553 /* 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]8554 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8555 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8556 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8557 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8558 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8559 if (hist_ptr >= MAX_HDR_HISTORY)
8560 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8561 *vptr = ptr_hist[hist_ptr];
8562 *vlen = len_hist[hist_ptr];
8563 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8564}
8565
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8566/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8567 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8568 * performed over the whole headers. Otherwise it must contain a valid header
8569 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8570 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8571 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8572 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8573 * -1. This function differs from http_get_hdr() in that it only returns full
8574 * line header values and does not stop at commas.
8575 * The return value is 0 if nothing was found, or non-zero otherwise.
8576 */
8577unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8578 struct hdr_idx *idx, int occ,
8579 struct hdr_ctx *ctx, char **vptr, int *vlen)
8580{
8581 struct hdr_ctx local_ctx;
8582 char *ptr_hist[MAX_HDR_HISTORY];
8583 int len_hist[MAX_HDR_HISTORY];
8584 unsigned int hist_ptr;
8585 int found;
8586
8587 if (!ctx) {
8588 local_ctx.idx = 0;
8589 ctx = &local_ctx;
8590 }
8591
8592 if (occ >= 0) {
8593 /* search from the beginning */
8594 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8595 occ--;
8596 if (occ <= 0) {
8597 *vptr = ctx->line + ctx->val;
8598 *vlen = ctx->vlen;
8599 return 1;
8600 }
8601 }
8602 return 0;
8603 }
8604
8605 /* negative occurrence, we scan all the list then walk back */
8606 if (-occ > MAX_HDR_HISTORY)
8607 return 0;
8608
8609 found = hist_ptr = 0;
8610 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8611 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8612 len_hist[hist_ptr] = ctx->vlen;
8613 if (++hist_ptr >= MAX_HDR_HISTORY)
8614 hist_ptr = 0;
8615 found++;
8616 }
8617 if (-occ > found)
8618 return 0;
8619 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8620 * find occurrence -occ, so we have to check [hist_ptr+occ].
8621 */
8622 hist_ptr += occ;
8623 if (hist_ptr >= MAX_HDR_HISTORY)
8624 hist_ptr -= MAX_HDR_HISTORY;
8625 *vptr = ptr_hist[hist_ptr];
8626 *vlen = len_hist[hist_ptr];
8627 return 1;
8628}
8629
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8630/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8631 * Print a debug line with a header. Always stop at the first CR or LF char,
8632 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8633 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8634 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8635void debug_hdr(const char *dir, struct session *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8636{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8637 int max;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8638 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8639 dir,
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8640 objt_conn(s->req->prod->end) ? (unsigned short)objt_conn(s->req->prod->end)->t.sock.fd : -1,
8641 objt_conn(s->req->cons->end) ? (unsigned short)objt_conn(s->req->cons->end)->t.sock.fd : -1);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8642
8643 for (max = 0; start + max < end; max++)
8644 if (start[max] == '\r' || start[max] == '\n')
8645 break;
8646
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8647 UBOUND(max, trash.size - trash.len - 3);
8648 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8649 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8650 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8651}
8652
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8653/*
8654 * Initialize a new HTTP transaction for session <s>. It is assumed that all
8655 * the required fields are properly allocated and that we only need to (re)init
8656 * them. This should be used before processing any new request.
8657 */
8658void http_init_txn(struct session *s)
8659{
8660 struct http_txn *txn = &s->txn;
8661 struct proxy *fe = s->fe;
8662
8663 txn->flags = 0;
8664 txn->status = -1;
8665
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8666 txn->cookie_first_date = 0;
8667 txn->cookie_last_date = 0;
8668
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8669 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8670 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8671 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8672 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8673 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8674 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8675 txn->req.chunk_len = 0LL;
8676 txn->req.body_len = 0LL;
8677 txn->rsp.chunk_len = 0LL;
8678 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8679 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8680 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8681 txn->req.chn = s->req;
8682 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8683
8684 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8685
8686 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8687 if (fe->options2 & PR_O2_REQBUG_OK)
8688 txn->req.err_pos = -1; /* let buggy requests pass */
8689
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8690 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8691 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8692
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8693 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8694 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8695
8696 if (txn->hdr_idx.v)
8697 hdr_idx_init(&txn->hdr_idx);
8698}
8699
8700/* to be used at the end of a transaction */
8701void http_end_txn(struct session *s)
8702{
8703 struct http_txn *txn = &s->txn;
8704
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]8705 /* release any possible compression context */
8706 if (s->flags & SN_COMP_READY)
8707 s->comp_algo->end(&s->comp_ctx);
8708 s->comp_algo = NULL;
8709 s->flags &= ~SN_COMP_READY;
8710
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8711 /* these ones will have been dynamically allocated */
8712 pool_free2(pool2_requri, txn->uri);
8713 pool_free2(pool2_capture, txn->cli_cookie);
8714 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8715 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8716 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8717
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8718 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8719 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8720 txn->uri = NULL;
8721 txn->srv_cookie = NULL;
8722 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8723
8724 if (txn->req.cap) {
8725 struct cap_hdr *h;
8726 for (h = s->fe->req_cap; h; h = h->next)
8727 pool_free2(h->pool, txn->req.cap[h->index]);
8728 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8729 }
8730
8731 if (txn->rsp.cap) {
8732 struct cap_hdr *h;
8733 for (h = s->fe->rsp_cap; h; h = h->next)
8734 pool_free2(h->pool, txn->rsp.cap[h->index]);
8735 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8736 }
8737
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8738}
8739
8740/* to be used at the end of a transaction to prepare a new one */
8741void http_reset_txn(struct session *s)
8742{
8743 http_end_txn(s);
8744 http_init_txn(s);
8745
8746 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8747 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8748 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8749 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8750 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8751 /* re-init store persistence */
8752 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8753 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8754
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8755 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8756
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8757 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8758
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8759 /* We must trim any excess data from the response buffer, because we
8760 * may have blocked an invalid response from a server that we don't
8761 * want to accidentely forward once we disable the analysers, nor do
8762 * we want those data to come along with next response. A typical
8763 * example of such data would be from a buggy server responding to
8764 * a HEAD with some data, or sending more than the advertised
8765 * content-length.
8766 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8767 if (unlikely(s->rep->buf->i))
8768 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8769
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8770 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8771 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8772
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8773 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8774 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8775
8776 s->req->rex = TICK_ETERNITY;
8777 s->req->wex = TICK_ETERNITY;
8778 s->req->analyse_exp = TICK_ETERNITY;
8779 s->rep->rex = TICK_ETERNITY;
8780 s->rep->wex = TICK_ETERNITY;
8781 s->rep->analyse_exp = TICK_ETERNITY;
8782}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8783
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8784void free_http_res_rules(struct list *r)
8785{
8786 struct http_res_rule *tr, *pr;
8787
8788 list_for_each_entry_safe(pr, tr, r, list) {
8789 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8790 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8791 free(pr);
8792 }
8793}
8794
8795void free_http_req_rules(struct list *r)
8796{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8797 struct http_req_rule *tr, *pr;
8798
8799 list_for_each_entry_safe(pr, tr, r, list) {
8800 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8801 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8802 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8803
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8804 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8805 free(pr);
8806 }
8807}
8808
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8809/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8810struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8811{
8812 struct http_req_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]8813 struct http_req_action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8814 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8815 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8816
8817 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8818 if (!rule) {
8819 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8820 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8821 }
8822
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8823 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8824 rule->action = HTTP_REQ_ACT_ALLOW;
8825 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]8826 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8827 rule->action = HTTP_REQ_ACT_DENY;
8828 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8829 } else if (!strcmp(args[0], "tarpit")) {
8830 rule->action = HTTP_REQ_ACT_TARPIT;
8831 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8832 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8833 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8834 cur_arg = 1;
8835
8836 while(*args[cur_arg]) {
8837 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8838 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8839 cur_arg+=2;
8840 continue;
8841 } else
8842 break;
8843 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8844 } else if (!strcmp(args[0], "set-nice")) {
8845 rule->action = HTTP_REQ_ACT_SET_NICE;
8846 cur_arg = 1;
8847
8848 if (!*args[cur_arg] ||
8849 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8850 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8851 file, linenum, args[0]);
8852 goto out_err;
8853 }
8854 rule->arg.nice = atoi(args[cur_arg]);
8855 if (rule->arg.nice < -1024)
8856 rule->arg.nice = -1024;
8857 else if (rule->arg.nice > 1024)
8858 rule->arg.nice = 1024;
8859 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8860 } else if (!strcmp(args[0], "set-tos")) {
8861#ifdef IP_TOS
8862 char *err;
8863 rule->action = HTTP_REQ_ACT_SET_TOS;
8864 cur_arg = 1;
8865
8866 if (!*args[cur_arg] ||
8867 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8868 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8869 file, linenum, args[0]);
8870 goto out_err;
8871 }
8872
8873 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8874 if (err && *err != '\0') {
8875 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8876 file, linenum, err, args[0]);
8877 goto out_err;
8878 }
8879 cur_arg++;
8880#else
8881 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8882 goto out_err;
8883#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8884 } else if (!strcmp(args[0], "set-mark")) {
8885#ifdef SO_MARK
8886 char *err;
8887 rule->action = HTTP_REQ_ACT_SET_MARK;
8888 cur_arg = 1;
8889
8890 if (!*args[cur_arg] ||
8891 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8892 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8893 file, linenum, args[0]);
8894 goto out_err;
8895 }
8896
8897 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8898 if (err && *err != '\0') {
8899 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8900 file, linenum, err, args[0]);
8901 goto out_err;
8902 }
8903 cur_arg++;
8904 global.last_checks |= LSTCHK_NETADM;
8905#else
8906 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8907 goto out_err;
8908#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8909 } else if (!strcmp(args[0], "set-log-level")) {
8910 rule->action = HTTP_REQ_ACT_SET_LOGL;
8911 cur_arg = 1;
8912
8913 if (!*args[cur_arg] ||
8914 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8915 bad_log_level:
8916 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8917 file, linenum, args[0]);
8918 goto out_err;
8919 }
8920 if (strcmp(args[cur_arg], "silent") == 0)
8921 rule->arg.loglevel = -1;
8922 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8923 goto bad_log_level;
8924 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8925 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8926 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8927 cur_arg = 1;
8928
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8929 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8930 (*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]8931 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8932 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8933 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8934 }
8935
8936 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8937 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8938 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8939
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8940 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8941 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]8942 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8943 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8944 free(proxy->conf.lfs_file);
8945 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8946 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8947 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]8948 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
8949 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]8950 cur_arg = 1;
8951
8952 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann8f249f42014-06-24 11:10:00 +0200[diff] [blame]8953 (*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]8954 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
8955 file, linenum, args[0]);
8956 goto out_err;
8957 }
8958
8959 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8960 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8961 LIST_INIT(&rule->arg.hdr_add.fmt);
8962
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8963 error = NULL;
8964 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
8965 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
8966 args[cur_arg + 1], error);
8967 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8968 goto out_err;
8969 }
8970
8971 proxy->conf.args.ctx = ARGC_HRQ;
8972 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
8973 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8974 file, linenum);
8975
8976 free(proxy->conf.lfs_file);
8977 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8978 proxy->conf.lfs_line = proxy->conf.args.line;
8979 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8980 } else if (strcmp(args[0], "del-header") == 0) {
8981 rule->action = HTTP_REQ_ACT_DEL_HDR;
8982 cur_arg = 1;
8983
8984 if (!*args[cur_arg] ||
8985 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8986 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
8987 file, linenum, args[0]);
8988 goto out_err;
8989 }
8990
8991 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8992 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8993
8994 proxy->conf.args.ctx = ARGC_HRQ;
8995 free(proxy->conf.lfs_file);
8996 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8997 proxy->conf.lfs_line = proxy->conf.args.line;
8998 cur_arg += 1;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8999 } else if (strcmp(args[0], "redirect") == 0) {
9000 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9001 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9002
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9003 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]9004 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9005 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9006 goto out_err;
9007 }
9008
9009 /* this redirect rule might already contain a parsed condition which
9010 * we'll pass to the http-request rule.
9011 */
9012 rule->action = HTTP_REQ_ACT_REDIR;
9013 rule->arg.redir = redir;
9014 rule->cond = redir->cond;
9015 redir->cond = NULL;
9016 cur_arg = 2;
9017 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9018 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9019 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9020 rule->action = HTTP_REQ_ACT_ADD_ACL;
9021 /*
9022 * '+ 8' for 'add-acl('
9023 * '- 9' for 'add-acl(' + trailing ')'
9024 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9025 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9026
9027 cur_arg = 1;
9028
9029 if (!*args[cur_arg] ||
9030 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9031 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9032 file, linenum, args[0]);
9033 goto out_err;
9034 }
9035
9036 LIST_INIT(&rule->arg.map.key);
9037 proxy->conf.args.ctx = ARGC_HRQ;
9038 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9039 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9040 file, linenum);
9041 free(proxy->conf.lfs_file);
9042 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9043 proxy->conf.lfs_line = proxy->conf.args.line;
9044 cur_arg += 1;
9045 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9046 /* http-request del-acl(<reference (acl name)>) <key pattern> */
9047 rule->action = HTTP_REQ_ACT_DEL_ACL;
9048 /*
9049 * '+ 8' for 'del-acl('
9050 * '- 9' for 'del-acl(' + trailing ')'
9051 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9052 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9053
9054 cur_arg = 1;
9055
9056 if (!*args[cur_arg] ||
9057 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9058 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9059 file, linenum, args[0]);
9060 goto out_err;
9061 }
9062
9063 LIST_INIT(&rule->arg.map.key);
9064 proxy->conf.args.ctx = ARGC_HRQ;
9065 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9066 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9067 file, linenum);
9068 free(proxy->conf.lfs_file);
9069 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9070 proxy->conf.lfs_line = proxy->conf.args.line;
9071 cur_arg += 1;
9072 } else if (strncmp(args[0], "del-map", 7) == 0) {
9073 /* http-request del-map(<reference (map name)>) <key pattern> */
9074 rule->action = HTTP_REQ_ACT_DEL_MAP;
9075 /*
9076 * '+ 8' for 'del-map('
9077 * '- 9' for 'del-map(' + trailing ')'
9078 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9079 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9080
9081 cur_arg = 1;
9082
9083 if (!*args[cur_arg] ||
9084 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9085 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9086 file, linenum, args[0]);
9087 goto out_err;
9088 }
9089
9090 LIST_INIT(&rule->arg.map.key);
9091 proxy->conf.args.ctx = ARGC_HRQ;
9092 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9093 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9094 file, linenum);
9095 free(proxy->conf.lfs_file);
9096 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9097 proxy->conf.lfs_line = proxy->conf.args.line;
9098 cur_arg += 1;
9099 } else if (strncmp(args[0], "set-map", 7) == 0) {
9100 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
9101 rule->action = HTTP_REQ_ACT_SET_MAP;
9102 /*
9103 * '+ 8' for 'set-map('
9104 * '- 9' for 'set-map(' + trailing ')'
9105 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9106 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9107
9108 cur_arg = 1;
9109
9110 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9111 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9112 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9113 file, linenum, args[0]);
9114 goto out_err;
9115 }
9116
9117 LIST_INIT(&rule->arg.map.key);
9118 LIST_INIT(&rule->arg.map.value);
9119 proxy->conf.args.ctx = ARGC_HRQ;
9120
9121 /* key pattern */
9122 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9123 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9124 file, linenum);
9125
9126 /* value pattern */
9127 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9128 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9129 file, linenum);
9130 free(proxy->conf.lfs_file);
9131 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9132 proxy->conf.lfs_line = proxy->conf.args.line;
9133
9134 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9135 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9136 char *errmsg = NULL;
9137 cur_arg = 1;
9138 /* try in the module list */
9139 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9140 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9141 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9142 free(errmsg);
9143 goto out_err;
9144 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9145 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9146 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]9147 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9148 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9149 }
9150
9151 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9152 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9153 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9154
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9155 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9156 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9157 file, linenum, args[0], errmsg);
9158 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9159 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9160 }
9161 rule->cond = cond;
9162 }
9163 else if (*args[cur_arg]) {
9164 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9165 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9166 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9167 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9168 }
9169
9170 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9171 out_err:
9172 free(rule);
9173 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9174}
9175
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9176/* parse an "http-respose" rule */
9177struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9178{
9179 struct http_res_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9180 struct http_res_action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9181 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9182 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9183
9184 rule = calloc(1, sizeof(*rule));
9185 if (!rule) {
9186 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9187 goto out_err;
9188 }
9189
9190 if (!strcmp(args[0], "allow")) {
9191 rule->action = HTTP_RES_ACT_ALLOW;
9192 cur_arg = 1;
9193 } else if (!strcmp(args[0], "deny")) {
9194 rule->action = HTTP_RES_ACT_DENY;
9195 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9196 } else if (!strcmp(args[0], "set-nice")) {
9197 rule->action = HTTP_RES_ACT_SET_NICE;
9198 cur_arg = 1;
9199
9200 if (!*args[cur_arg] ||
9201 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9202 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9203 file, linenum, args[0]);
9204 goto out_err;
9205 }
9206 rule->arg.nice = atoi(args[cur_arg]);
9207 if (rule->arg.nice < -1024)
9208 rule->arg.nice = -1024;
9209 else if (rule->arg.nice > 1024)
9210 rule->arg.nice = 1024;
9211 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9212 } else if (!strcmp(args[0], "set-tos")) {
9213#ifdef IP_TOS
9214 char *err;
9215 rule->action = HTTP_RES_ACT_SET_TOS;
9216 cur_arg = 1;
9217
9218 if (!*args[cur_arg] ||
9219 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9220 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9221 file, linenum, args[0]);
9222 goto out_err;
9223 }
9224
9225 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9226 if (err && *err != '\0') {
9227 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9228 file, linenum, err, args[0]);
9229 goto out_err;
9230 }
9231 cur_arg++;
9232#else
9233 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9234 goto out_err;
9235#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9236 } else if (!strcmp(args[0], "set-mark")) {
9237#ifdef SO_MARK
9238 char *err;
9239 rule->action = HTTP_RES_ACT_SET_MARK;
9240 cur_arg = 1;
9241
9242 if (!*args[cur_arg] ||
9243 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9244 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9245 file, linenum, args[0]);
9246 goto out_err;
9247 }
9248
9249 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9250 if (err && *err != '\0') {
9251 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9252 file, linenum, err, args[0]);
9253 goto out_err;
9254 }
9255 cur_arg++;
9256 global.last_checks |= LSTCHK_NETADM;
9257#else
9258 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9259 goto out_err;
9260#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9261 } else if (!strcmp(args[0], "set-log-level")) {
9262 rule->action = HTTP_RES_ACT_SET_LOGL;
9263 cur_arg = 1;
9264
9265 if (!*args[cur_arg] ||
9266 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9267 bad_log_level:
9268 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9269 file, linenum, args[0]);
9270 goto out_err;
9271 }
9272 if (strcmp(args[cur_arg], "silent") == 0)
9273 rule->arg.loglevel = -1;
9274 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9275 goto bad_log_level;
9276 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9277 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9278 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
9279 cur_arg = 1;
9280
9281 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9282 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9283 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9284 file, linenum, args[0]);
9285 goto out_err;
9286 }
9287
9288 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9289 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9290 LIST_INIT(&rule->arg.hdr_add.fmt);
9291
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9292 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9293 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]9294 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9295 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9296 free(proxy->conf.lfs_file);
9297 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9298 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9299 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9300 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9301 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]9302 cur_arg = 1;
9303
9304 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmanna772b942014-08-08 17:29:06 +0200[diff] [blame]9305 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9306 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9307 file, linenum, args[0]);
9308 goto out_err;
9309 }
9310
9311 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9312 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9313 LIST_INIT(&rule->arg.hdr_add.fmt);
9314
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9315 error = NULL;
9316 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9317 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9318 args[cur_arg + 1], error);
9319 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9320 goto out_err;
9321 }
9322
9323 proxy->conf.args.ctx = ARGC_HRQ;
9324 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9325 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9326 file, linenum);
9327
9328 free(proxy->conf.lfs_file);
9329 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9330 proxy->conf.lfs_line = proxy->conf.args.line;
9331 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9332 } else if (strcmp(args[0], "del-header") == 0) {
9333 rule->action = HTTP_RES_ACT_DEL_HDR;
9334 cur_arg = 1;
9335
9336 if (!*args[cur_arg] ||
9337 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9338 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9339 file, linenum, args[0]);
9340 goto out_err;
9341 }
9342
9343 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9344 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9345
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9346 proxy->conf.args.ctx = ARGC_HRS;
9347 free(proxy->conf.lfs_file);
9348 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9349 proxy->conf.lfs_line = proxy->conf.args.line;
9350 cur_arg += 1;
9351 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9352 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9353 rule->action = HTTP_RES_ACT_ADD_ACL;
9354 /*
9355 * '+ 8' for 'add-acl('
9356 * '- 9' for 'add-acl(' + trailing ')'
9357 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9358 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9359
9360 cur_arg = 1;
9361
9362 if (!*args[cur_arg] ||
9363 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9364 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9365 file, linenum, args[0]);
9366 goto out_err;
9367 }
9368
9369 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9370 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9371 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9372 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9373 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9374 free(proxy->conf.lfs_file);
9375 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9376 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9377
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9378 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9379 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9380 /* http-response del-acl(<reference (acl name)>) <key pattern> */
9381 rule->action = HTTP_RES_ACT_DEL_ACL;
9382 /*
9383 * '+ 8' for 'del-acl('
9384 * '- 9' for 'del-acl(' + trailing ')'
9385 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9386 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9387
9388 cur_arg = 1;
9389
9390 if (!*args[cur_arg] ||
9391 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9392 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9393 file, linenum, args[0]);
9394 goto out_err;
9395 }
9396
9397 LIST_INIT(&rule->arg.map.key);
9398 proxy->conf.args.ctx = ARGC_HRS;
9399 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9400 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9401 file, linenum);
9402 free(proxy->conf.lfs_file);
9403 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9404 proxy->conf.lfs_line = proxy->conf.args.line;
9405 cur_arg += 1;
9406 } else if (strncmp(args[0], "del-map", 7) == 0) {
9407 /* http-response del-map(<reference (map name)>) <key pattern> */
9408 rule->action = HTTP_RES_ACT_DEL_MAP;
9409 /*
9410 * '+ 8' for 'del-map('
9411 * '- 9' for 'del-map(' + trailing ')'
9412 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9413 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9414
9415 cur_arg = 1;
9416
9417 if (!*args[cur_arg] ||
9418 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9419 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9420 file, linenum, args[0]);
9421 goto out_err;
9422 }
9423
9424 LIST_INIT(&rule->arg.map.key);
9425 proxy->conf.args.ctx = ARGC_HRS;
9426 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9427 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9428 file, linenum);
9429 free(proxy->conf.lfs_file);
9430 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9431 proxy->conf.lfs_line = proxy->conf.args.line;
9432 cur_arg += 1;
9433 } else if (strncmp(args[0], "set-map", 7) == 0) {
9434 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
9435 rule->action = HTTP_RES_ACT_SET_MAP;
9436 /*
9437 * '+ 8' for 'set-map('
9438 * '- 9' for 'set-map(' + trailing ')'
9439 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9440 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9441
9442 cur_arg = 1;
9443
9444 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9445 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9446 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9447 file, linenum, args[0]);
9448 goto out_err;
9449 }
9450
9451 LIST_INIT(&rule->arg.map.key);
9452 LIST_INIT(&rule->arg.map.value);
9453
9454 proxy->conf.args.ctx = ARGC_HRS;
9455
9456 /* key pattern */
9457 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9458 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9459 file, linenum);
9460
9461 /* value pattern */
9462 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9463 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9464 file, linenum);
9465
9466 free(proxy->conf.lfs_file);
9467 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9468 proxy->conf.lfs_line = proxy->conf.args.line;
9469
9470 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9471 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9472 char *errmsg = NULL;
9473 cur_arg = 1;
9474 /* try in the module list */
9475 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9476 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9477 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9478 free(errmsg);
9479 goto out_err;
9480 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9481 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9482 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]9483 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
9484 goto out_err;
9485 }
9486
9487 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9488 struct acl_cond *cond;
9489 char *errmsg = NULL;
9490
9491 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9492 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9493 file, linenum, args[0], errmsg);
9494 free(errmsg);
9495 goto out_err;
9496 }
9497 rule->cond = cond;
9498 }
9499 else if (*args[cur_arg]) {
9500 Alert("parsing [%s:%d]: 'http-response %s' expects"
9501 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9502 file, linenum, args[0], args[cur_arg]);
9503 goto out_err;
9504 }
9505
9506 return rule;
9507 out_err:
9508 free(rule);
9509 return NULL;
9510}
9511
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9512/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9513 * with <err> filled with the error message. If <use_fmt> is not null, builds a
9514 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9515 */
9516struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9517 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9518{
9519 struct redirect_rule *rule;
9520 int cur_arg;
9521 int type = REDIRECT_TYPE_NONE;
9522 int code = 302;
9523 const char *destination = NULL;
9524 const char *cookie = NULL;
9525 int cookie_set = 0;
9526 unsigned int flags = REDIRECT_FLAG_NONE;
9527 struct acl_cond *cond = NULL;
9528
9529 cur_arg = 0;
9530 while (*(args[cur_arg])) {
9531 if (strcmp(args[cur_arg], "location") == 0) {
9532 if (!*args[cur_arg + 1])
9533 goto missing_arg;
9534
9535 type = REDIRECT_TYPE_LOCATION;
9536 cur_arg++;
9537 destination = args[cur_arg];
9538 }
9539 else if (strcmp(args[cur_arg], "prefix") == 0) {
9540 if (!*args[cur_arg + 1])
9541 goto missing_arg;
9542
9543 type = REDIRECT_TYPE_PREFIX;
9544 cur_arg++;
9545 destination = args[cur_arg];
9546 }
9547 else if (strcmp(args[cur_arg], "scheme") == 0) {
9548 if (!*args[cur_arg + 1])
9549 goto missing_arg;
9550
9551 type = REDIRECT_TYPE_SCHEME;
9552 cur_arg++;
9553 destination = args[cur_arg];
9554 }
9555 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9556 if (!*args[cur_arg + 1])
9557 goto missing_arg;
9558
9559 cur_arg++;
9560 cookie = args[cur_arg];
9561 cookie_set = 1;
9562 }
9563 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9564 if (!*args[cur_arg + 1])
9565 goto missing_arg;
9566
9567 cur_arg++;
9568 cookie = args[cur_arg];
9569 cookie_set = 0;
9570 }
9571 else if (strcmp(args[cur_arg], "code") == 0) {
9572 if (!*args[cur_arg + 1])
9573 goto missing_arg;
9574
9575 cur_arg++;
9576 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9577 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9578 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9579 "'%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]9580 args[cur_arg - 1], args[cur_arg]);
9581 return NULL;
9582 }
9583 }
9584 else if (!strcmp(args[cur_arg],"drop-query")) {
9585 flags |= REDIRECT_FLAG_DROP_QS;
9586 }
9587 else if (!strcmp(args[cur_arg],"append-slash")) {
9588 flags |= REDIRECT_FLAG_APPEND_SLASH;
9589 }
9590 else if (strcmp(args[cur_arg], "if") == 0 ||
9591 strcmp(args[cur_arg], "unless") == 0) {
9592 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9593 if (!cond) {
9594 memprintf(errmsg, "error in condition: %s", *errmsg);
9595 return NULL;
9596 }
9597 break;
9598 }
9599 else {
9600 memprintf(errmsg,
9601 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9602 args[cur_arg]);
9603 return NULL;
9604 }
9605 cur_arg++;
9606 }
9607
9608 if (type == REDIRECT_TYPE_NONE) {
9609 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9610 return NULL;
9611 }
9612
9613 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
9614 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9615 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9616
9617 if (!use_fmt) {
9618 /* old-style static redirect rule */
9619 rule->rdr_str = strdup(destination);
9620 rule->rdr_len = strlen(destination);
9621 }
9622 else {
9623 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9624
9625 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
9626 * if prefix == "/", we don't want to add anything, otherwise it
9627 * makes it hard for the user to configure a self-redirection.
9628 */
Godbach543b9782014-12-18 15:44:58 +0800[diff] [blame]9629 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9630 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9631 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]9632 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9633 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9634 free(curproxy->conf.lfs_file);
9635 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
9636 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9637 }
9638 }
9639
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9640 if (cookie) {
9641 /* depending on cookie_set, either we want to set the cookie, or to clear it.
9642 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
9643 */
9644 rule->cookie_len = strlen(cookie);
9645 if (cookie_set) {
9646 rule->cookie_str = malloc(rule->cookie_len + 10);
9647 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9648 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
9649 rule->cookie_len += 9;
9650 } else {
9651 rule->cookie_str = malloc(rule->cookie_len + 21);
9652 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9653 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
9654 rule->cookie_len += 20;
9655 }
9656 }
9657 rule->type = type;
9658 rule->code = code;
9659 rule->flags = flags;
9660 LIST_INIT(&rule->list);
9661 return rule;
9662
9663 missing_arg:
9664 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9665 return NULL;
9666}
9667
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9668/************************************************************************/
9669/* The code below is dedicated to ACL parsing and matching */
9670/************************************************************************/
9671
9672
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9673/* This function ensures that the prerequisites for an L7 fetch are ready,
9674 * which means that a request or response is ready. If some data is missing,
9675 * 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]9676 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9677 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9678 *
9679 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9680 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9681 * decide whether or not an HTTP message is present ;
9682 * 0 if the requested data cannot be fetched or if it is certain that
9683 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9684 * 1 if an HTTP message is ready
9685 */
9686static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9687smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9688 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9689{
9690 struct http_txn *txn = l7;
9691 struct http_msg *msg = &txn->req;
9692
9693 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9694 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9695 */
9696
9697 if (unlikely(!s || !txn))
9698 return 0;
9699
9700 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9701 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9702
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9703 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9704 if (unlikely(!s->req))
9705 return 0;
9706
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9707 /* If the buffer does not leave enough free space at the end,
9708 * we must first realign it.
9709 */
9710 if (s->req->buf->p > s->req->buf->data &&
9711 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
9712 buffer_slow_realign(s->req->buf);
9713
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9714 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9715 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9716 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9717
9718 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9719 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9720 http_msg_analyzer(msg, &txn->hdr_idx);
9721
9722 /* Still no valid request ? */
9723 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9724 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9725 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9726 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9727 }
9728 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9729 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9730 return 0;
9731 }
9732
9733 /* OK we just got a valid HTTP request. We have some minor
9734 * preparation to perform so that further checks can rely
9735 * on HTTP tests.
9736 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9737
9738 /* If the request was parsed but was too large, we must absolutely
9739 * return an error so that it is not processed. At the moment this
9740 * cannot happen, but if the parsers are to change in the future,
9741 * we want this check to be maintained.
9742 */
9743 if (unlikely(s->req->buf->i + s->req->buf->p >
9744 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
9745 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9746 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9747 return 1;
9748 }
9749
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9750 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9751 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
9752 s->flags |= SN_REDIRECTABLE;
9753
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9754 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
9755 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9756 }
9757
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9758 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9759 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9760 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9761
9762 /* otherwise everything's ready for the request */
9763 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9764 else {
9765 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9766 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
9767 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9768 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9769 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9770 }
9771
9772 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9773 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9774 return 1;
9775}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9776
Willy Tarreaua4ba9db2014-06-25 16:56:41 +0200[diff] [blame]9777/* Note: these functinos *do* modify the sample. Even in case of success, at
9778 * least the type and uint value are modified.
9779 */
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9780#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9781 do { int r = smp_prefetch_http(px, l4, l7, opt, args, smp, 1); if (r <= 0) return r; } while (0)
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9782
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9783#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9784 do { int r = smp_prefetch_http(px, l4, l7, opt, args, smp, 0); if (r <= 0) return r; } while (0)
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9785
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9786
9787/* 1. Check on METHOD
9788 * We use the pre-parsed method if it is known, and store its number as an
9789 * integer. If it is unknown, we use the pointer and the length.
9790 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9791static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9792{
9793 int len, meth;
9794
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]9795 len = strlen(text);
9796 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9797
9798 pattern->val.i = meth;
9799 if (meth == HTTP_METH_OTHER) {
Willy Tarreau71196f32014-08-29 15:15:50 +0200[diff] [blame]9800 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9801 pattern->len = len;
9802 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9803 else {
9804 pattern->ptr.str = NULL;
9805 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9806 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9807 return 1;
9808}
9809
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9810/* This function fetches the method of current HTTP request and stores
9811 * it in the global pattern struct as a chunk. There are two possibilities :
9812 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
9813 * in <len> and <ptr> is NULL ;
9814 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
9815 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9816 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9817 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9818static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9819smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9820 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9821{
9822 int meth;
9823 struct http_txn *txn = l7;
9824
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9825 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9826
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9827 meth = txn->meth;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9828 smp->type = SMP_T_METH;
9829 smp->data.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9830 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9831 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
9832 /* ensure the indexes are not affected */
9833 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9834 smp->flags |= SMP_F_CONST;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9835 smp->data.meth.str.len = txn->req.sl.rq.m_l;
9836 smp->data.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9837 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9838 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9839 return 1;
9840}
9841
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9842/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9843static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9844{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9845 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9846 struct pattern_list *lst;
9847 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9848
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9849 list_for_each_entry(lst, &expr->patterns, list) {
9850 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9851
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9852 /* well-known method */
9853 if (pattern->val.i != HTTP_METH_OTHER) {
9854 if (smp->data.meth.meth == pattern->val.i)
9855 return pattern;
9856 else
9857 continue;
9858 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9859
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9860 /* Other method, we must compare the strings */
9861 if (pattern->len != smp->data.meth.str.len)
9862 continue;
9863
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9864 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Willy Tarreauc62a0c62014-08-28 20:42:57 +0200[diff] [blame]9865 if ((icase && strncasecmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0) ||
9866 (!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]9867 return pattern;
9868 }
9869 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9870}
9871
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9872static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9873smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9874 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9875{
9876 struct http_txn *txn = l7;
9877 char *ptr;
9878 int len;
9879
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9880 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9881
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9882 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9883 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9884
9885 while ((len-- > 0) && (*ptr++ != '/'));
9886 if (len <= 0)
9887 return 0;
9888
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9889 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9890 smp->data.str.str = ptr;
9891 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9892
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9893 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9894 return 1;
9895}
9896
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9897static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9898smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9899 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9900{
9901 struct http_txn *txn = l7;
9902 char *ptr;
9903 int len;
9904
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9905 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9906
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9907 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9908 return 0;
9909
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9910 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9911 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9912
9913 while ((len-- > 0) && (*ptr++ != '/'));
9914 if (len <= 0)
9915 return 0;
9916
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9917 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9918 smp->data.str.str = ptr;
9919 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9920
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9921 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9922 return 1;
9923}
9924
9925/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9926static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9927smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9928 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9929{
9930 struct http_txn *txn = l7;
9931 char *ptr;
9932 int len;
9933
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9934 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9935
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9936 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9937 return 0;
9938
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9939 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9940 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9941
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9942 smp->type = SMP_T_UINT;
9943 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9944 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9945 return 1;
9946}
9947
9948/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9949static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9950smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9951 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9952{
9953 struct http_txn *txn = l7;
9954
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9955 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9956
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9957 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9958 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9959 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9960 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9961 return 1;
9962}
9963
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9964static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9965smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9966 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9967{
9968 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9969 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9970
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9971 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9972
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]9973 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]9974 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]9975 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9976
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9977 smp->type = SMP_T_IPV4;
9978 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9979 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9980 return 1;
9981}
9982
9983static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9984smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9985 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9986{
9987 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9988 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9989
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9990 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9991
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]9992 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]9993 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
9994 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9995
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9996 smp->type = SMP_T_UINT;
9997 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]9998 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9999 return 1;
10000}
10001
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10002/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10003 * Accepts an optional argument of type string containing the header field name,
10004 * and an optional argument of type signed or unsigned integer to request an
10005 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10006 * headers are considered from the first one. It does not stop on commas and
10007 * returns full lines instead (useful for User-Agent or Date for example).
10008 */
10009static int
10010smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10011 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10012{
10013 struct http_txn *txn = l7;
10014 struct hdr_idx *idx = &txn->hdr_idx;
10015 struct hdr_ctx *ctx = smp->ctx.a[0];
10016 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
10017 int occ = 0;
10018 const char *name_str = NULL;
10019 int name_len = 0;
10020
10021 if (!ctx) {
10022 /* first call */
10023 ctx = &static_hdr_ctx;
10024 ctx->idx = 0;
10025 smp->ctx.a[0] = ctx;
10026 }
10027
10028 if (args) {
10029 if (args[0].type != ARGT_STR)
10030 return 0;
10031 name_str = args[0].data.str.str;
10032 name_len = args[0].data.str.len;
10033
10034 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10035 occ = args[1].data.uint;
10036 }
10037
10038 CHECK_HTTP_MESSAGE_FIRST();
10039
10040 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10041 /* search for header from the beginning */
10042 ctx->idx = 0;
10043
10044 if (!occ && !(opt & SMP_OPT_ITERATE))
10045 /* no explicit occurrence and single fetch => last header by default */
10046 occ = -1;
10047
10048 if (!occ)
10049 /* prepare to report multiple occurrences for ACL fetches */
10050 smp->flags |= SMP_F_NOT_LAST;
10051
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10052 smp->type = SMP_T_STR;
10053 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10054 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
10055 return 1;
10056
10057 smp->flags &= ~SMP_F_NOT_LAST;
10058 return 0;
10059}
10060
10061/* 6. Check on HTTP header count. The number of occurrences is returned.
10062 * Accepts exactly 1 argument of type string. It does not stop on commas and
10063 * returns full lines instead (useful for User-Agent or Date for example).
10064 */
10065static int
10066smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10067 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10068{
10069 struct http_txn *txn = l7;
10070 struct hdr_idx *idx = &txn->hdr_idx;
10071 struct hdr_ctx ctx;
10072 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
10073 int cnt;
10074
10075 if (!args || args->type != ARGT_STR)
10076 return 0;
10077
10078 CHECK_HTTP_MESSAGE_FIRST();
10079
10080 ctx.idx = 0;
10081 cnt = 0;
10082 while (http_find_full_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
10083 cnt++;
10084
10085 smp->type = SMP_T_UINT;
10086 smp->data.uint = cnt;
10087 smp->flags = SMP_F_VOL_HDR;
10088 return 1;
10089}
10090
10091/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10092 * Accepts an optional argument of type string containing the header field name,
10093 * and an optional argument of type signed or unsigned integer to request an
10094 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10095 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10096 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10097static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10098smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10099 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10100{
10101 struct http_txn *txn = l7;
10102 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10103 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10104 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10105 int occ = 0;
10106 const char *name_str = NULL;
10107 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10108
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10109 if (!ctx) {
10110 /* first call */
10111 ctx = &static_hdr_ctx;
10112 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10113 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10114 }
10115
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10116 if (args) {
10117 if (args[0].type != ARGT_STR)
10118 return 0;
10119 name_str = args[0].data.str.str;
10120 name_len = args[0].data.str.len;
10121
10122 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10123 occ = args[1].data.uint;
10124 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10125
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10126 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10127
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10128 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10129 /* search for header from the beginning */
10130 ctx->idx = 0;
10131
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10132 if (!occ && !(opt & SMP_OPT_ITERATE))
10133 /* no explicit occurrence and single fetch => last header by default */
10134 occ = -1;
10135
10136 if (!occ)
10137 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10138 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10139
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10140 smp->type = SMP_T_STR;
10141 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10142 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]10143 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10144
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10145 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10146 return 0;
10147}
10148
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10149/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10150 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10151 */
10152static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10153smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10154 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10155{
10156 struct http_txn *txn = l7;
10157 struct hdr_idx *idx = &txn->hdr_idx;
10158 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10159 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10160 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10161
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10162 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10163 return 0;
10164
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10165 CHECK_HTTP_MESSAGE_FIRST();
10166
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10167 ctx.idx = 0;
10168 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10169 while (http_find_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10170 cnt++;
10171
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10172 smp->type = SMP_T_UINT;
10173 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10174 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10175 return 1;
10176}
10177
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10178/* Fetch an HTTP header's integer value. The integer value is returned. It
10179 * takes a mandatory argument of type string and an optional one of type int
10180 * to designate a specific occurrence. It returns an unsigned integer, which
10181 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10182 */
10183static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10184smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10185 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10186{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10187 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10188
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10189 if (ret > 0) {
10190 smp->type = SMP_T_UINT;
10191 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10192 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10193
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10194 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10195}
10196
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10197/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10198 * and an optional one of type int to designate a specific occurrence.
10199 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10200 */
10201static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10202smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10203 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10204{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10205 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10206
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10207 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10208 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
10209 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10210 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10211 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10212 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10213 if (smp->data.str.len < temp->size - 1) {
10214 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
10215 temp->str[smp->data.str.len] = '\0';
10216 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
10217 smp->type = SMP_T_IPV6;
10218 break;
10219 }
10220 }
10221 }
10222
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10223 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10224 if (!(smp->flags & SMP_F_NOT_LAST))
10225 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10226 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10227 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10228}
10229
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10230/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10231 * the first '/' after the possible hostname, and ends before the possible '?'.
10232 */
10233static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10234smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10235 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10236{
10237 struct http_txn *txn = l7;
10238 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10239
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10240 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10241
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10242 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]10243 ptr = http_get_path(txn);
10244 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10245 return 0;
10246
10247 /* OK, we got the '/' ! */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10248 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10249 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10250
10251 while (ptr < end && *ptr != '?')
10252 ptr++;
10253
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10254 smp->data.str.len = ptr - smp->data.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10255 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10256 return 1;
10257}
10258
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10259/* This produces a concatenation of the first occurrence of the Host header
10260 * followed by the path component if it begins with a slash ('/'). This means
10261 * that '*' will not be added, resulting in exactly the first Host entry.
10262 * If no Host header is found, then the path is returned as-is. The returned
10263 * 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]10264 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10265 */
10266static int
10267smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10268 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10269{
10270 struct http_txn *txn = l7;
10271 char *ptr, *end, *beg;
10272 struct hdr_ctx ctx;
Willy Tarreauc1fbbd42014-06-24 17:27:02 +0200[diff] [blame]10273 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10274
10275 CHECK_HTTP_MESSAGE_FIRST();
10276
10277 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10278 if (!http_find_header2("Host", 4, txn->req.chn->buf->p, &txn->hdr_idx, &ctx) || !ctx.vlen)
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10279 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10280
10281 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
Willy Tarreauc1fbbd42014-06-24 17:27:02 +0200[diff] [blame]10282 temp = get_trash_chunk();
10283 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10284 smp->type = SMP_T_STR;
Willy Tarreauc1fbbd42014-06-24 17:27:02 +0200[diff] [blame]10285 smp->data.str.str = temp->str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10286 smp->data.str.len = ctx.vlen;
10287
10288 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10289 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]10290 beg = http_get_path(txn);
10291 if (!beg)
10292 beg = end;
10293
10294 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10295
10296 if (beg < ptr && *beg == '/') {
10297 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
10298 smp->data.str.len += ptr - beg;
10299 }
10300
10301 smp->flags = SMP_F_VOL_1ST;
10302 return 1;
10303}
10304
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10305/* This produces a 32-bit hash of the concatenation of the first occurrence of
10306 * the Host header followed by the path component if it begins with a slash ('/').
10307 * This means that '*' will not be added, resulting in exactly the first Host
10308 * 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]10309 * is hashed using the path hash followed by a full avalanche hash and provides a
10310 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10311 * high-traffic sites without having to store whole paths.
10312 */
10313static int
10314smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10315 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10316{
10317 struct http_txn *txn = l7;
10318 struct hdr_ctx ctx;
10319 unsigned int hash = 0;
10320 char *ptr, *beg, *end;
10321 int len;
10322
10323 CHECK_HTTP_MESSAGE_FIRST();
10324
10325 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10326 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]10327 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10328 ptr = ctx.line + ctx.val;
10329 len = ctx.vlen;
10330 while (len--)
10331 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10332 }
10333
10334 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10335 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]10336 beg = http_get_path(txn);
10337 if (!beg)
10338 beg = end;
10339
10340 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10341
10342 if (beg < ptr && *beg == '/') {
10343 while (beg < ptr)
10344 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10345 }
10346 hash = full_hash(hash);
10347
10348 smp->type = SMP_T_UINT;
10349 smp->data.uint = hash;
10350 smp->flags = SMP_F_VOL_1ST;
10351 return 1;
10352}
10353
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10354/* 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]10355 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10356 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10357 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10358 * that in environments where IPv6 is insignificant, truncating the output to
10359 * 8 bytes would still work.
10360 */
10361static int
10362smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10363 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10364{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10365 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10366 struct connection *cli_conn = objt_conn(l4->si[0].end);
10367
10368 if (!cli_conn)
10369 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10370
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10371 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10372 return 0;
10373
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10374 temp = get_trash_chunk();
Willy Tarreau0dff81c2014-07-15 21:34:06 +0200[diff] [blame]10375 *(unsigned int *)temp->str = htonl(smp->data.uint);
10376 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10377
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10378 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10379 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10380 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]10381 temp->len += 4;
10382 break;
10383 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10384 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]10385 temp->len += 16;
10386 break;
10387 default:
10388 return 0;
10389 }
10390
10391 smp->data.str = *temp;
10392 smp->type = SMP_T_BIN;
10393 return 1;
10394}
10395
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10396static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10397smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10398 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10399{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10400 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10401 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10402 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10403
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10404 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10405
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10406 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10407 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10408 return 1;
10409}
10410
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10411/* return a valid test if the current request is the first one on the connection */
10412static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10413smp_fetch_http_first_req(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10414 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10415{
10416 if (!s)
10417 return 0;
10418
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10419 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10420 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10421 return 1;
10422}
10423
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10424/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10425static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10426smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10427 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10428{
10429
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10430 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10431 return 0;
10432
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10433 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10434
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10435 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10436 return 0;
10437
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10438 smp->type = SMP_T_BOOL;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10439 smp->data.uint = check_user(args->data.usr, l4->txn.auth.user, l4->txn.auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10440 return 1;
10441}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10442
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10443/* Accepts exactly 1 argument of type userlist */
10444static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10445smp_fetch_http_auth_grp(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10446 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10447{
10448
10449 if (!args || args->type != ARGT_USR)
10450 return 0;
10451
10452 CHECK_HTTP_MESSAGE_FIRST();
10453
10454 if (!get_http_auth(l4))
10455 return 0;
10456
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10457 /* if the user does not belong to the userlist or has a wrong password,
10458 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10459 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10460 */
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10461 if (!check_user(args->data.usr, l4->txn.auth.user, l4->txn.auth.pass))
10462 return 0;
10463
10464 /* pat_match_auth() will need the user list */
10465 smp->ctx.a[0] = args->data.usr;
10466
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10467 smp->type = SMP_T_STR;
10468 smp->flags = SMP_F_CONST;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10469 smp->data.str.str = l4->txn.auth.user;
10470 smp->data.str.len = strlen(l4->txn.auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10471
10472 return 1;
10473}
10474
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10475/* Try to find the next occurrence of a cookie name in a cookie header value.
10476 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10477 * the cookie value is returned into *value and *value_l, and the function
10478 * returns a pointer to the next pointer to search from if the value was found.
10479 * Otherwise if the cookie was not found, NULL is returned and neither value
10480 * nor value_l are touched. The input <hdr> string should first point to the
10481 * header's value, and the <hdr_end> pointer must point to the first character
10482 * not part of the value. <list> must be non-zero if value may represent a list
10483 * of values (cookie headers). This makes it faster to abort parsing when no
10484 * list is expected.
10485 */
10486static char *
10487extract_cookie_value(char *hdr, const char *hdr_end,
10488 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10489 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10490{
10491 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10492 char *next;
10493
10494 /* we search at least a cookie name followed by an equal, and more
10495 * generally something like this :
10496 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
10497 */
10498 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
10499 /* Iterate through all cookies on this line */
10500
10501 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
10502 att_beg++;
10503
10504 /* find att_end : this is the first character after the last non
10505 * space before the equal. It may be equal to hdr_end.
10506 */
10507 equal = att_end = att_beg;
10508
10509 while (equal < hdr_end) {
10510 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
10511 break;
10512 if (http_is_spht[(unsigned char)*equal++])
10513 continue;
10514 att_end = equal;
10515 }
10516
10517 /* here, <equal> points to '=', a delimitor or the end. <att_end>
10518 * is between <att_beg> and <equal>, both may be identical.
10519 */
10520
10521 /* look for end of cookie if there is an equal sign */
10522 if (equal < hdr_end && *equal == '=') {
10523 /* look for the beginning of the value */
10524 val_beg = equal + 1;
10525 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
10526 val_beg++;
10527
10528 /* find the end of the value, respecting quotes */
10529 next = find_cookie_value_end(val_beg, hdr_end);
10530
10531 /* make val_end point to the first white space or delimitor after the value */
10532 val_end = next;
10533 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
10534 val_end--;
10535 } else {
10536 val_beg = val_end = next = equal;
10537 }
10538
10539 /* We have nothing to do with attributes beginning with '$'. However,
10540 * they will automatically be removed if a header before them is removed,
10541 * since they're supposed to be linked together.
10542 */
10543 if (*att_beg == '$')
10544 continue;
10545
10546 /* Ignore cookies with no equal sign */
10547 if (equal == next)
10548 continue;
10549
10550 /* Now we have the cookie name between att_beg and att_end, and
10551 * its value between val_beg and val_end.
10552 */
10553
10554 if (att_end - att_beg == cookie_name_l &&
10555 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
10556 /* let's return this value and indicate where to go on from */
10557 *value = val_beg;
10558 *value_l = val_end - val_beg;
10559 return next + 1;
10560 }
10561
10562 /* Set-Cookie headers only have the name in the first attr=value part */
10563 if (!list)
10564 break;
10565 }
10566
10567 return NULL;
10568}
10569
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10570/* Fetch a captured HTTP request header. The index is the position of
10571 * the "capture" option in the configuration file
10572 */
10573static int
10574smp_fetch_capture_header_req(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10575 const struct arg *args, struct sample *smp, const char *kw)
10576{
10577 struct proxy *fe = l4->fe;
10578 struct http_txn *txn = l7;
10579 int idx;
10580
10581 if (!args || args->type != ARGT_UINT)
10582 return 0;
10583
10584 idx = args->data.uint;
10585
10586 if (idx > (fe->nb_req_cap - 1) || txn->req.cap == NULL || txn->req.cap[idx] == NULL)
10587 return 0;
10588
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10589 smp->type = SMP_T_STR;
10590 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10591 smp->data.str.str = txn->req.cap[idx];
10592 smp->data.str.len = strlen(txn->req.cap[idx]);
10593
10594 return 1;
10595}
10596
10597/* Fetch a captured HTTP response header. The index is the position of
10598 * the "capture" option in the configuration file
10599 */
10600static int
10601smp_fetch_capture_header_res(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10602 const struct arg *args, struct sample *smp, const char *kw)
10603{
10604 struct proxy *fe = l4->fe;
10605 struct http_txn *txn = l7;
10606 int idx;
10607
10608 if (!args || args->type != ARGT_UINT)
10609 return 0;
10610
10611 idx = args->data.uint;
10612
10613 if (idx > (fe->nb_rsp_cap - 1) || txn->rsp.cap == NULL || txn->rsp.cap[idx] == NULL)
10614 return 0;
10615
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10616 smp->type = SMP_T_STR;
10617 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10618 smp->data.str.str = txn->rsp.cap[idx];
10619 smp->data.str.len = strlen(txn->rsp.cap[idx]);
10620
10621 return 1;
10622}
10623
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10624/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
10625static int
10626smp_fetch_capture_req_method(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10627 const struct arg *args, struct sample *smp, const char *kw)
10628{
10629 struct chunk *temp;
10630 struct http_txn *txn = l7;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10631 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10632
10633 if (!txn->uri)
10634 return 0;
10635
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10636 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10637
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10638 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10639 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10640
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10641 temp = get_trash_chunk();
10642 temp->str = txn->uri;
10643 temp->len = ptr - txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10644 smp->data.str = *temp;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10645 smp->type = SMP_T_STR;
10646 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10647
10648 return 1;
10649
10650}
10651
10652/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
10653static int
10654smp_fetch_capture_req_uri(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10655 const struct arg *args, struct sample *smp, const char *kw)
10656{
10657 struct chunk *temp;
10658 struct http_txn *txn = l7;
10659 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10660
10661 if (!txn->uri)
10662 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10663
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10664 ptr = txn->uri;
10665
10666 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10667 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10668
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10669 if (!*ptr)
10670 return 0;
10671
10672 ptr++; /* skip the space */
10673
10674 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10675 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10676 if (!ptr)
10677 return 0;
10678 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
10679 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10680
10681 smp->data.str = *temp;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10682 smp->data.str.len = ptr - temp->str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10683 smp->type = SMP_T_STR;
10684 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10685
10686 return 1;
10687}
10688
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10689/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
10690 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10691 */
10692static int
10693smp_fetch_capture_req_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10694 const struct arg *args, struct sample *smp, const char *kw)
10695{
10696 struct http_txn *txn = l7;
10697
10698 if (txn->req.msg_state < HTTP_MSG_HDR_FIRST)
10699 return 0;
10700
10701 if (txn->req.flags & HTTP_MSGF_VER_11)
10702 smp->data.str.str = "HTTP/1.1";
10703 else
10704 smp->data.str.str = "HTTP/1.0";
10705
10706 smp->data.str.len = 8;
10707 smp->type = SMP_T_STR;
10708 smp->flags = SMP_F_CONST;
10709 return 1;
10710
10711}
10712
10713/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
10714 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10715 */
10716static int
10717smp_fetch_capture_res_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10718 const struct arg *args, struct sample *smp, const char *kw)
10719{
10720 struct http_txn *txn = l7;
10721
10722 if (txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
10723 return 0;
10724
10725 if (txn->rsp.flags & HTTP_MSGF_VER_11)
10726 smp->data.str.str = "HTTP/1.1";
10727 else
10728 smp->data.str.str = "HTTP/1.0";
10729
10730 smp->data.str.len = 8;
10731 smp->type = SMP_T_STR;
10732 smp->flags = SMP_F_CONST;
10733 return 1;
10734
10735}
10736
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10737
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10738/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10739 * 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]10740 * 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]10741 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10742 * 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]10743 * Accepts exactly 1 argument of type string. If the input options indicate
10744 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10745 * The returned sample is of type CSTR. Can be used to parse cookies in other
10746 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10747 */
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10748int smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10749 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10750{
10751 struct http_txn *txn = l7;
10752 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10753 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10754 const struct http_msg *msg;
10755 const char *hdr_name;
10756 int hdr_name_len;
10757 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10758 int occ = 0;
10759 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10760
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10761 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10762 return 0;
10763
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10764 if (!ctx) {
10765 /* first call */
10766 ctx = &static_hdr_ctx;
10767 ctx->idx = 0;
10768 smp->ctx.a[2] = ctx;
10769 }
10770
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10771 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10772
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10773 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10774 msg = &txn->req;
10775 hdr_name = "Cookie";
10776 hdr_name_len = 6;
10777 } else {
10778 msg = &txn->rsp;
10779 hdr_name = "Set-Cookie";
10780 hdr_name_len = 10;
10781 }
10782
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10783 if (!occ && !(opt & SMP_OPT_ITERATE))
10784 /* no explicit occurrence and single fetch => last cookie by default */
10785 occ = -1;
10786
10787 /* OK so basically here, either we want only one value and it's the
10788 * last one, or we want to iterate over all of them and we fetch the
10789 * next one.
10790 */
10791
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10792 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10793 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10794 /* search for the header from the beginning, we must first initialize
10795 * the search parameters.
10796 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10797 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10798 ctx->idx = 0;
10799 }
10800
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10801 smp->flags |= SMP_F_VOL_HDR;
10802
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10803 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10804 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
10805 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10806 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
10807 goto out;
10808
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10809 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10810 continue;
10811
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10812 smp->ctx.a[0] = ctx->line + ctx->val;
10813 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10814 }
10815
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10816 smp->type = SMP_T_STR;
10817 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10818 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]10819 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10820 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10821 &smp->data.str.str,
10822 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10823 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10824 found = 1;
10825 if (occ >= 0) {
10826 /* one value was returned into smp->data.str.{str,len} */
10827 smp->flags |= SMP_F_NOT_LAST;
10828 return 1;
10829 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10830 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10831 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10832 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10833 /* all cookie headers and values were scanned. If we're looking for the
10834 * last occurrence, we may return it now.
10835 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10836 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10837 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10838 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10839}
10840
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10841/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10842 * 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]10843 * multiple cookies may be parsed on the same line. The returned sample is of
10844 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10845 */
10846static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10847smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10848 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10849{
10850 struct http_txn *txn = l7;
10851 struct hdr_idx *idx = &txn->hdr_idx;
10852 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10853 const struct http_msg *msg;
10854 const char *hdr_name;
10855 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10856 int cnt;
10857 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10858 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10859
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10860 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10861 return 0;
10862
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10863 CHECK_HTTP_MESSAGE_FIRST();
10864
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10865 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10866 msg = &txn->req;
10867 hdr_name = "Cookie";
10868 hdr_name_len = 6;
10869 } else {
10870 msg = &txn->rsp;
10871 hdr_name = "Set-Cookie";
10872 hdr_name_len = 10;
10873 }
10874
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10875 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]10876 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10877 ctx.idx = 0;
10878 cnt = 0;
10879
10880 while (1) {
10881 /* Note: val_beg == NULL every time we need to fetch a new header */
10882 if (!val_beg) {
10883 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
10884 break;
10885
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10886 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10887 continue;
10888
10889 val_beg = ctx.line + ctx.val;
10890 val_end = val_beg + ctx.vlen;
10891 }
10892
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10893 smp->type = SMP_T_STR;
10894 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10895 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10896 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10897 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10898 &smp->data.str.str,
10899 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10900 cnt++;
10901 }
10902 }
10903
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]10904 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10905 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10906 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10907 return 1;
10908}
10909
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10910/* Fetch an cookie's integer value. The integer value is returned. It
10911 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
10912 */
10913static int
10914smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10915 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10916{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10917 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10918
10919 if (ret > 0) {
10920 smp->type = SMP_T_UINT;
10921 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10922 }
10923
10924 return ret;
10925}
10926
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10927/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10928/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10929/************************************************************************/
10930
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10931/*
10932 * Given a path string and its length, find the position of beginning of the
10933 * query string. Returns NULL if no query string is found in the path.
10934 *
10935 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
10936 *
10937 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
10938 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10939static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10940{
10941 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]10942
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10943 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10944 return p ? p + 1 : NULL;
10945}
10946
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10947static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10948{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10949 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10950}
10951
10952/*
10953 * Given a url parameter, find the starting position of the first occurence,
10954 * or NULL if the parameter is not found.
10955 *
10956 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
10957 * the function will return query_string+8.
10958 */
10959static char*
10960find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10961 char* url_param_name, size_t url_param_name_l,
10962 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10963{
10964 char *pos, *last;
10965
10966 pos = query_string;
10967 last = query_string + query_string_l - url_param_name_l - 1;
10968
10969 while (pos <= last) {
10970 if (pos[url_param_name_l] == '=') {
10971 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
10972 return pos;
10973 pos += url_param_name_l + 1;
10974 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10975 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10976 pos++;
10977 pos++;
10978 }
10979 return NULL;
10980}
10981
10982/*
10983 * Given a url parameter name, returns its value and size into *value and
10984 * *value_l respectively, and returns non-zero. If the parameter is not found,
10985 * zero is returned and value/value_l are not touched.
10986 */
10987static int
10988find_url_param_value(char* path, size_t path_l,
10989 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10990 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10991{
10992 char *query_string, *qs_end;
10993 char *arg_start;
10994 char *value_start, *value_end;
10995
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10996 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10997 if (!query_string)
10998 return 0;
10999
11000 qs_end = path + path_l;
11001 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11002 url_param_name, url_param_name_l,
11003 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11004 if (!arg_start)
11005 return 0;
11006
11007 value_start = arg_start + url_param_name_l + 1;
11008 value_end = value_start;
11009
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11010 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11011 value_end++;
11012
11013 *value = value_start;
11014 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]11015 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11016}
11017
11018static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11019smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11020 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11021{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11022 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11023 struct http_txn *txn = l7;
11024 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11025
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11026 if (!args || args[0].type != ARGT_STR ||
11027 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11028 return 0;
11029
11030 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11031
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11032 if (args[1].type)
11033 delim = *args[1].data.str.str;
11034
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11035 if (!find_url_param_value(msg->chn->buf->p + msg->sl.rq.u, msg->sl.rq.u_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11036 args->data.str.str, args->data.str.len,
11037 &smp->data.str.str, &smp->data.str.len,
11038 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11039 return 0;
11040
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11041 smp->type = SMP_T_STR;
11042 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11043 return 1;
11044}
11045
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11046/* Return the signed integer value for the specified url parameter (see url_param
11047 * above).
11048 */
11049static int
11050smp_fetch_url_param_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11051 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11052{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11053 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11054
11055 if (ret > 0) {
11056 smp->type = SMP_T_UINT;
11057 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11058 }
11059
11060 return ret;
11061}
11062
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11063/* This produces a 32-bit hash of the concatenation of the first occurrence of
11064 * the Host header followed by the path component if it begins with a slash ('/').
11065 * This means that '*' will not be added, resulting in exactly the first Host
11066 * entry. If no Host header is found, then the path is used. The resulting value
11067 * is hashed using the url hash followed by a full avalanche hash and provides a
11068 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11069 * high-traffic sites without having to store whole paths.
11070 * this differs from the base32 functions in that it includes the url parameters
11071 * as well as the path
11072 */
11073static int
11074smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11075 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11076{
11077 struct http_txn *txn = l7;
11078 struct hdr_ctx ctx;
11079 unsigned int hash = 0;
11080 char *ptr, *beg, *end;
11081 int len;
11082
11083 CHECK_HTTP_MESSAGE_FIRST();
11084
11085 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11086 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]11087 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11088 ptr = ctx.line + ctx.val;
11089 len = ctx.vlen;
11090 while (len--)
11091 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11092 }
11093
11094 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11095 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]11096 beg = http_get_path(txn);
11097 if (!beg)
11098 beg = end;
11099
11100 for (ptr = beg; ptr < end ; ptr++);
11101
11102 if (beg < ptr && *beg == '/') {
11103 while (beg < ptr)
11104 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11105 }
11106 hash = full_hash(hash);
11107
11108 smp->type = SMP_T_UINT;
11109 smp->data.uint = hash;
11110 smp->flags = SMP_F_VOL_1ST;
11111 return 1;
11112}
11113
11114/* This concatenates the source address with the 32-bit hash of the Host and
11115 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11116 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11117 * on the source address length. The URL hash is stored before the address so
11118 * that in environments where IPv6 is insignificant, truncating the output to
11119 * 8 bytes would still work.
11120 */
11121static int
11122smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11123 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11124{
11125 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11126 struct connection *cli_conn = objt_conn(l4->si[0].end);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11127
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11128 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11129 return 0;
11130
11131 temp = get_trash_chunk();
11132 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
11133 temp->len += sizeof(smp->data.uint);
11134
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11135 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11136 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11137 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]11138 temp->len += 4;
11139 break;
11140 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11141 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]11142 temp->len += 16;
11143 break;
11144 default:
11145 return 0;
11146 }
11147
11148 smp->data.str = *temp;
11149 smp->type = SMP_T_BIN;
11150 return 1;
11151}
11152
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11153/* This function is used to validate the arguments passed to any "hdr" fetch
11154 * keyword. These keywords support an optional positive or negative occurrence
11155 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11156 * is assumed that the types are already the correct ones. Returns 0 on error,
11157 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11158 * error message in case of error, that the caller is responsible for freeing.
11159 * The initial location must either be freeable or NULL.
11160 */
11161static int val_hdr(struct arg *arg, char **err_msg)
11162{
11163 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11164 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11165 return 0;
11166 }
11167 return 1;
11168}
11169
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11170/* takes an UINT value on input supposed to represent the time since EPOCH,
11171 * adds an optional offset found in args[0] and emits a string representing
11172 * the date in RFC-1123/5322 format.
11173 */
11174static int sample_conv_http_date(const struct arg *args, struct sample *smp)
11175{
11176 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
11177 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11178 struct chunk *temp;
11179 struct tm *tm;
11180 time_t curr_date = smp->data.uint;
11181
11182 /* add offset */
11183 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
11184 curr_date += args[0].data.sint;
11185
11186 tm = gmtime(&curr_date);
11187
11188 temp = get_trash_chunk();
11189 temp->len = snprintf(temp->str, temp->size - temp->len,
11190 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11191 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11192 tm->tm_hour, tm->tm_min, tm->tm_sec);
11193
11194 smp->data.str = *temp;
11195 smp->type = SMP_T_STR;
11196 return 1;
11197}
11198
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11199/* Match language range with language tag. RFC2616 14.4:
11200 *
11201 * A language-range matches a language-tag if it exactly equals
11202 * the tag, or if it exactly equals a prefix of the tag such
11203 * that the first tag character following the prefix is "-".
11204 *
11205 * Return 1 if the strings match, else return 0.
11206 */
11207static inline int language_range_match(const char *range, int range_len,
11208 const char *tag, int tag_len)
11209{
11210 const char *end = range + range_len;
11211 const char *tend = tag + tag_len;
11212 while (range < end) {
11213 if (*range == '-' && tag == tend)
11214 return 1;
11215 if (*range != *tag || tag == tend)
11216 return 0;
11217 range++;
11218 tag++;
11219 }
11220 /* Return true only if the last char of the tag is matched. */
11221 return tag == tend;
11222}
11223
11224/* Arguments: The list of expected value, the number of parts returned and the separator */
11225static int sample_conv_q_prefered(const struct arg *args, struct sample *smp)
11226{
11227 const char *al = smp->data.str.str;
11228 const char *end = al + smp->data.str.len;
11229 const char *token;
11230 int toklen;
11231 int qvalue;
11232 const char *str;
11233 const char *w;
11234 int best_q = 0;
11235
11236 /* Set the constant to the sample, because the output of the
11237 * function will be peek in the constant configuration string.
11238 */
11239 smp->flags |= SMP_F_CONST;
11240 smp->data.str.size = 0;
11241 smp->data.str.str = "";
11242 smp->data.str.len = 0;
11243
11244 /* Parse the accept language */
11245 while (1) {
11246
11247 /* Jump spaces, quit if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11248 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11249 al++;
11250 if (al >= end)
11251 break;
11252
11253 /* Start of the fisrt word. */
11254 token = al;
11255
11256 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11257 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11258 al++;
11259 if (al == token)
11260 goto expect_comma;
11261
11262 /* Length of the token. */
11263 toklen = al - token;
11264 qvalue = 1000;
11265
11266 /* Check if the token exists in the list. If the token not exists,
11267 * jump to the next token.
11268 */
11269 str = args[0].data.str.str;
11270 w = str;
11271 while (1) {
11272 if (*str == ';' || *str == '\0') {
11273 if (language_range_match(token, toklen, w, str-w))
11274 goto look_for_q;
11275 if (*str == '\0')
11276 goto expect_comma;
11277 w = str + 1;
11278 }
11279 str++;
11280 }
11281 goto expect_comma;
11282
11283look_for_q:
11284
11285 /* Jump spaces, quit if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11286 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11287 al++;
11288 if (al >= end)
11289 goto process_value;
11290
11291 /* If ',' is found, process the result */
11292 if (*al == ',')
11293 goto process_value;
11294
11295 /* If the character is different from ';', look
11296 * for the end of the header part in best effort.
11297 */
11298 if (*al != ';')
11299 goto expect_comma;
11300
11301 /* Assumes that the char is ';', now expect "q=". */
11302 al++;
11303
11304 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11305 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11306 al++;
11307 if (al >= end)
11308 goto process_value;
11309
11310 /* Expect 'q'. If no 'q', continue in best effort */
11311 if (*al != 'q')
11312 goto process_value;
11313 al++;
11314
11315 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11316 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11317 al++;
11318 if (al >= end)
11319 goto process_value;
11320
11321 /* Expect '='. If no '=', continue in best effort */
11322 if (*al != '=')
11323 goto process_value;
11324 al++;
11325
11326 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11327 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11328 al++;
11329 if (al >= end)
11330 goto process_value;
11331
11332 /* Parse the q value. */
11333 qvalue = parse_qvalue(al, &al);
11334
11335process_value:
11336
11337 /* If the new q value is the best q value, then store the associated
11338 * language in the response. If qvalue is the biggest value (1000),
11339 * break the process.
11340 */
11341 if (qvalue > best_q) {
11342 smp->data.str.str = (char *)w;
11343 smp->data.str.len = str - w;
11344 if (qvalue >= 1000)
11345 break;
11346 best_q = qvalue;
11347 }
11348
11349expect_comma:
11350
11351 /* Expect comma or end. If the end is detected, quit the loop. */
11352 while (al < end && *al != ',')
11353 al++;
11354 if (al >= end)
11355 break;
11356
11357 /* Comma is found, jump it and restart the analyzer. */
11358 al++;
11359 }
11360
11361 /* Set default value if required. */
11362 if (smp->data.str.len == 0 && args[1].type == ARGT_STR) {
11363 smp->data.str.str = args[1].data.str.str;
11364 smp->data.str.len = args[1].data.str.len;
11365 }
11366
11367 /* Return true only if a matching language was found. */
11368 return smp->data.str.len != 0;
11369}
11370
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]11371/*
11372 * Return the struct http_req_action_kw associated to a keyword.
11373 */
11374struct http_req_action_kw *action_http_req_custom(const char *kw)
11375{
11376 if (!LIST_ISEMPTY(&http_req_keywords.list)) {
11377 struct http_req_action_kw_list *kw_list;
11378 int i;
11379
11380 list_for_each_entry(kw_list, &http_req_keywords.list, list) {
11381 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
11382 if (!strcmp(kw, kw_list->kw[i].kw))
11383 return &kw_list->kw[i];
11384 }
11385 }
11386 }
11387 return NULL;
11388}
11389
11390/*
11391 * Return the struct http_res_action_kw associated to a keyword.
11392 */
11393struct http_res_action_kw *action_http_res_custom(const char *kw)
11394{
11395 if (!LIST_ISEMPTY(&http_res_keywords.list)) {
11396 struct http_res_action_kw_list *kw_list;
11397 int i;
11398
11399 list_for_each_entry(kw_list, &http_res_keywords.list, list) {
11400 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
11401 if (!strcmp(kw, kw_list->kw[i].kw))
11402 return &kw_list->kw[i];
11403 }
11404 }
11405 }
11406 return NULL;
11407}
11408
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11409/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11410/* All supported ACL keywords must be declared here. */
11411/************************************************************************/
11412
11413/* Note: must not be declared <const> as its list will be overwritten.
11414 * Please take care of keeping this list alphabetically sorted.
11415 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]11416static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11417 { "base", "base", PAT_MATCH_STR },
11418 { "base_beg", "base", PAT_MATCH_BEG },
11419 { "base_dir", "base", PAT_MATCH_DIR },
11420 { "base_dom", "base", PAT_MATCH_DOM },
11421 { "base_end", "base", PAT_MATCH_END },
11422 { "base_len", "base", PAT_MATCH_LEN },
11423 { "base_reg", "base", PAT_MATCH_REG },
11424 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11425
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11426 { "cook", "req.cook", PAT_MATCH_STR },
11427 { "cook_beg", "req.cook", PAT_MATCH_BEG },
11428 { "cook_dir", "req.cook", PAT_MATCH_DIR },
11429 { "cook_dom", "req.cook", PAT_MATCH_DOM },
11430 { "cook_end", "req.cook", PAT_MATCH_END },
11431 { "cook_len", "req.cook", PAT_MATCH_LEN },
11432 { "cook_reg", "req.cook", PAT_MATCH_REG },
11433 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11434
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11435 { "hdr", "req.hdr", PAT_MATCH_STR },
11436 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
11437 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
11438 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
11439 { "hdr_end", "req.hdr", PAT_MATCH_END },
11440 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
11441 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
11442 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11443
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11444 /* these two declarations uses strings with list storage (in place
11445 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
11446 * and delete functions are relative to the list management. The parse
11447 * and match method are related to the corresponding fetch methods. This
11448 * is very particular ACL declaration mode.
11449 */
11450 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
11451 { "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]11452
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11453 { "path", "path", PAT_MATCH_STR },
11454 { "path_beg", "path", PAT_MATCH_BEG },
11455 { "path_dir", "path", PAT_MATCH_DIR },
11456 { "path_dom", "path", PAT_MATCH_DOM },
11457 { "path_end", "path", PAT_MATCH_END },
11458 { "path_len", "path", PAT_MATCH_LEN },
11459 { "path_reg", "path", PAT_MATCH_REG },
11460 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11461
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11462 { "req_ver", "req.ver", PAT_MATCH_STR },
11463 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11464
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11465 { "scook", "res.cook", PAT_MATCH_STR },
11466 { "scook_beg", "res.cook", PAT_MATCH_BEG },
11467 { "scook_dir", "res.cook", PAT_MATCH_DIR },
11468 { "scook_dom", "res.cook", PAT_MATCH_DOM },
11469 { "scook_end", "res.cook", PAT_MATCH_END },
11470 { "scook_len", "res.cook", PAT_MATCH_LEN },
11471 { "scook_reg", "res.cook", PAT_MATCH_REG },
11472 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11473
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11474 { "shdr", "res.hdr", PAT_MATCH_STR },
11475 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
11476 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
11477 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
11478 { "shdr_end", "res.hdr", PAT_MATCH_END },
11479 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
11480 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
11481 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11482
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11483 { "url", "url", PAT_MATCH_STR },
11484 { "url_beg", "url", PAT_MATCH_BEG },
11485 { "url_dir", "url", PAT_MATCH_DIR },
11486 { "url_dom", "url", PAT_MATCH_DOM },
11487 { "url_end", "url", PAT_MATCH_END },
11488 { "url_len", "url", PAT_MATCH_LEN },
11489 { "url_reg", "url", PAT_MATCH_REG },
11490 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11491
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11492 { "urlp", "urlp", PAT_MATCH_STR },
11493 { "urlp_beg", "urlp", PAT_MATCH_BEG },
11494 { "urlp_dir", "urlp", PAT_MATCH_DIR },
11495 { "urlp_dom", "urlp", PAT_MATCH_DOM },
11496 { "urlp_end", "urlp", PAT_MATCH_END },
11497 { "urlp_len", "urlp", PAT_MATCH_LEN },
11498 { "urlp_reg", "urlp", PAT_MATCH_REG },
11499 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11500
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]11501 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11502}};
11503
11504/************************************************************************/
11505/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11506/************************************************************************/
11507/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]11508static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11509 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11510 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
11511 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
11512
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11513 /* capture are allocated and are permanent in the session */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11514 { "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]11515
11516 /* retrieve these captures from the HTTP logs */
11517 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11518 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11519 { "capture.req.ver", smp_fetch_capture_req_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11520
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11521 { "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]11522 { "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]11523
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11524 /* cookie is valid in both directions (eg: for "stick ...") but cook*
11525 * are only here to match the ACL's name, are request-only and are used
11526 * for ACL compatibility only.
11527 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11528 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
11529 { "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]11530 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11531 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11532
11533 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
11534 * only here to match the ACL's name, are request-only and are used for
11535 * ACL compatibility only.
11536 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11537 { "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]11538 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11539 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
11540 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
11541
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]11542 { "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]11543 { "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]11544 { "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]11545 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11546 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11547
11548 /* HTTP protocol on the request path */
11549 { "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]11550 { "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]11551
11552 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11553 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
11554 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11555
11556 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11557 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
11558 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11559
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11560 /* 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]11561 { "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]11562 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11563 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11564
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11565 { "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]11566 { "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]11567 { "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]11568 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11569 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
11570 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
11571
11572 /* 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]11573 { "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]11574 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11575 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11576
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11577 { "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]11578 { "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]11579 { "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]11580 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11581 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
11582 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
11583
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11584 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11585 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11586 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11587 { "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]11588 { "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]11589
11590 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11591 { "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]11592 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11593 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
11594 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
11595
11596 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11597 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11598 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
11599 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11600 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
11601 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11602 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
11603 { "urlp" , smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11604 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11605 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11606}};
11607
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11608
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11609/* Note: must not be declared <const> as its list will be overwritten */
11610static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11611 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR},
11612 { "language", sample_conv_q_prefered, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_T_STR},
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11613 { NULL, NULL, 0, 0, 0 },
11614}};
11615
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11616__attribute__((constructor))
11617static void __http_protocol_init(void)
11618{
11619 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11620 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11621 sample_register_convs(&sample_conv_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11622}
11623
11624
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]11625/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]11626 * Local variables:
11627 * c-indent-level: 8
11628 * c-basic-offset: 8
11629 * End:
11630 */