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git01.mediatek.com / haproxy / 2943734024525d4b9aeec13cca2c1d230c358ee5 / . / src / proto_http.c
blob: ccd52ad0b54ac9ff19d4b2e6d235543ed9085548 [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]3182static 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]3183 char* buf, struct hdr_idx* idx, struct list *fmt, struct my_regex *re,
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3184 struct hdr_ctx* ctx, int action)
3185{
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3186 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3187 struct hdr_idx *idx, struct hdr_ctx *ctx);
3188 struct chunk *replace = get_trash_chunk();
3189 struct chunk *output = get_trash_chunk();
3190
3191 replace->len = build_logline(s, replace->str, replace->size, fmt);
3192 if (replace->len >= replace->size - 1)
3193 return -1;
3194
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3195 ctx->idx = 0;
3196
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3197 /* Choose the header browsing function. */
3198 switch (action) {
3199 case HTTP_REQ_ACT_REPLACE_VAL:
3200 case HTTP_RES_ACT_REPLACE_VAL:
3201 http_find_hdr_func = http_find_header2;
3202 break;
3203 case HTTP_REQ_ACT_REPLACE_HDR:
3204 case HTTP_RES_ACT_REPLACE_HDR:
3205 http_find_hdr_func = http_find_full_header2;
3206 break;
3207 default: /* impossible */
3208 return -1;
3209 }
3210
3211 while (http_find_hdr_func(name, name_len, buf, idx, ctx)) {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3212 struct hdr_idx_elem *hdr = idx->v + ctx->idx;
3213 int delta;
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3214 char *val = ctx->line + ctx->val;
3215 char* val_end = val + ctx->vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3216
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3217 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch))
3218 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3219
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3220 output->len = exp_replace(output->str, output->size, val, replace->str, pmatch);
3221 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3222 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3223
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3224 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3225
3226 hdr->len += delta;
3227 http_msg_move_end(msg, delta);
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3228
3229 /* Adjust the length of the current value of the index. */
3230 ctx->vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3231 }
3232
3233 return 0;
3234}
3235
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3236/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3237 * transaction <txn>. Returns the verdict of the first rule that prevents
3238 * further processing of the request (auth, deny, ...), and defaults to
3239 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3240 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
3241 * on txn->flags if it encounters a tarpit rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3242 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3243enum rule_result
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3244http_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]3245{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3246 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3247 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3248 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3249 const char *auth_realm;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3250
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3251 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3252 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3253 continue;
3254
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3255 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3256 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3257 int ret;
3258
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3259 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]3260 ret = acl_pass(ret);
3261
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3262 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3263 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3264
3265 if (!ret) /* condition not matched */
3266 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3267 }
3268
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3269
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3270 switch (rule->action) {
3271 case HTTP_REQ_ACT_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3272 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3273
3274 case HTTP_REQ_ACT_DENY:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3275 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3276
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3277 case HTTP_REQ_ACT_TARPIT:
3278 txn->flags |= TX_CLTARPIT;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3279 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3280
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3281 case HTTP_REQ_ACT_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3282 /* Auth might be performed on regular http-req rules as well as on stats */
3283 auth_realm = rule->arg.auth.realm;
3284 if (!auth_realm) {
3285 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3286 auth_realm = STATS_DEFAULT_REALM;
3287 else
3288 auth_realm = px->id;
3289 }
3290 /* send 401/407 depending on whether we use a proxy or not. We still
3291 * count one error, because normal browsing won't significantly
3292 * increase the counter but brute force attempts will.
3293 */
3294 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3295 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
3296 stream_int_retnclose(&s->si[0], &trash);
3297 session_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3298 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3299
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3300 case HTTP_REQ_ACT_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3301 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3302 return HTTP_RULE_RES_BADREQ;
3303 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3304
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3305 case HTTP_REQ_ACT_SET_NICE:
3306 s->task->nice = rule->arg.nice;
3307 break;
3308
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3309 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3310 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3311 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]3312 break;
3313
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3314 case HTTP_REQ_ACT_SET_MARK:
3315#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3316 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3317 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]3318#endif
3319 break;
3320
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3321 case HTTP_REQ_ACT_SET_LOGL:
3322 s->logs.level = rule->arg.loglevel;
3323 break;
3324
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3325 case HTTP_REQ_ACT_REPLACE_HDR:
3326 case HTTP_REQ_ACT_REPLACE_VAL:
3327 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3328 txn->req.chn->buf->p, &txn->hdr_idx, &rule->arg.hdr_add.fmt,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3329 &rule->arg.hdr_add.re, &ctx, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3330 return HTTP_RULE_RES_BADREQ;
3331 break;
3332
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3333 case HTTP_REQ_ACT_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3334 ctx.idx = 0;
3335 /* remove all occurrences of the header */
3336 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3337 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3338 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3339 }
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3340 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3341
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3342 case HTTP_REQ_ACT_SET_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3343 case HTTP_REQ_ACT_ADD_HDR:
3344 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3345 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3346 trash.len = rule->arg.hdr_add.name_len;
3347 trash.str[trash.len++] = ':';
3348 trash.str[trash.len++] = ' ';
3349 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]3350
3351 if (rule->action == HTTP_REQ_ACT_SET_HDR) {
3352 /* remove all occurrences of the header */
3353 ctx.idx = 0;
3354 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3355 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3356 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3357 }
3358 }
3359
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3360 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3361 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3362
3363 case HTTP_REQ_ACT_DEL_ACL:
3364 case HTTP_REQ_ACT_DEL_MAP: {
3365 struct pat_ref *ref;
3366 char *key;
3367 int len;
3368
3369 /* collect reference */
3370 ref = pat_ref_lookup(rule->arg.map.ref);
3371 if (!ref)
3372 continue;
3373
3374 /* collect key */
3375 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3376 key = trash.str;
3377 key[len] = '\0';
3378
3379 /* perform update */
3380 /* returned code: 1=ok, 0=ko */
3381 pat_ref_delete(ref, key);
3382
3383 break;
3384 }
3385
3386 case HTTP_REQ_ACT_ADD_ACL: {
3387 struct pat_ref *ref;
3388 char *key;
3389 struct chunk *trash_key;
3390 int len;
3391
3392 trash_key = get_trash_chunk();
3393
3394 /* collect reference */
3395 ref = pat_ref_lookup(rule->arg.map.ref);
3396 if (!ref)
3397 continue;
3398
3399 /* collect key */
3400 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3401 key = trash_key->str;
3402 key[len] = '\0';
3403
3404 /* perform update */
3405 /* add entry only if it does not already exist */
3406 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3407 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3408
3409 break;
3410 }
3411
3412 case HTTP_REQ_ACT_SET_MAP: {
3413 struct pat_ref *ref;
3414 char *key, *value;
3415 struct chunk *trash_key, *trash_value;
3416 int len;
3417
3418 trash_key = get_trash_chunk();
3419 trash_value = get_trash_chunk();
3420
3421 /* collect reference */
3422 ref = pat_ref_lookup(rule->arg.map.ref);
3423 if (!ref)
3424 continue;
3425
3426 /* collect key */
3427 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3428 key = trash_key->str;
3429 key[len] = '\0';
3430
3431 /* collect value */
3432 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3433 value = trash_value->str;
3434 value[len] = '\0';
3435
3436 /* perform update */
3437 if (pat_ref_find_elt(ref, key) != NULL)
3438 /* update entry if it exists */
3439 pat_ref_set(ref, key, value, NULL);
3440 else
3441 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3442 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3443
3444 break;
3445 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3446
3447 case HTTP_REQ_ACT_CUSTOM_CONT:
3448 rule->action_ptr(rule, px, s, txn);
3449 break;
3450
3451 case HTTP_REQ_ACT_CUSTOM_STOP:
3452 rule->action_ptr(rule, px, s, txn);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3453 return HTTP_RULE_RES_DONE;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3454 }
3455 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3456
3457 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3458 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3459}
3460
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3461
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3462/* Executes the http-response rules <rules> for session <s>, proxy <px> and
3463 * transaction <txn>. Returns the first rule that prevents further processing
3464 * of the response (deny, ...) or NULL if it executed all rules or stopped
3465 * on an allow. It may set the TX_SVDENY on txn->flags if it encounters a deny
3466 * rule.
3467 */
3468static struct http_res_rule *
3469http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3470{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3471 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3472 struct http_res_rule *rule;
3473 struct hdr_ctx ctx;
3474
3475 list_for_each_entry(rule, rules, list) {
3476 if (rule->action >= HTTP_RES_ACT_MAX)
3477 continue;
3478
3479 /* check optional condition */
3480 if (rule->cond) {
3481 int ret;
3482
3483 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
3484 ret = acl_pass(ret);
3485
3486 if (rule->cond->pol == ACL_COND_UNLESS)
3487 ret = !ret;
3488
3489 if (!ret) /* condition not matched */
3490 continue;
3491 }
3492
3493
3494 switch (rule->action) {
3495 case HTTP_RES_ACT_ALLOW:
3496 return NULL; /* "allow" rules are OK */
3497
3498 case HTTP_RES_ACT_DENY:
3499 txn->flags |= TX_SVDENY;
3500 return rule;
3501
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3502 case HTTP_RES_ACT_SET_NICE:
3503 s->task->nice = rule->arg.nice;
3504 break;
3505
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3506 case HTTP_RES_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3507 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3508 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]3509 break;
3510
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3511 case HTTP_RES_ACT_SET_MARK:
3512#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3513 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3514 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]3515#endif
3516 break;
3517
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3518 case HTTP_RES_ACT_SET_LOGL:
3519 s->logs.level = rule->arg.loglevel;
3520 break;
3521
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3522 case HTTP_RES_ACT_REPLACE_HDR:
3523 case HTTP_RES_ACT_REPLACE_VAL:
3524 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3525 txn->rsp.chn->buf->p, &txn->hdr_idx, &rule->arg.hdr_add.fmt,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3526 &rule->arg.hdr_add.re, &ctx, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3527 return NULL; /* note: we should report an error here */
3528 break;
3529
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3530 case HTTP_RES_ACT_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3531 ctx.idx = 0;
3532 /* remove all occurrences of the header */
3533 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3534 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3535 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3536 }
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3537 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3538
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3539 case HTTP_RES_ACT_SET_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3540 case HTTP_RES_ACT_ADD_HDR:
3541 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3542 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3543 trash.len = rule->arg.hdr_add.name_len;
3544 trash.str[trash.len++] = ':';
3545 trash.str[trash.len++] = ' ';
3546 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]3547
3548 if (rule->action == HTTP_RES_ACT_SET_HDR) {
3549 /* remove all occurrences of the header */
3550 ctx.idx = 0;
3551 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3552 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3553 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3554 }
3555 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3556 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3557 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3558
3559 case HTTP_RES_ACT_DEL_ACL:
3560 case HTTP_RES_ACT_DEL_MAP: {
3561 struct pat_ref *ref;
3562 char *key;
3563 int len;
3564
3565 /* collect reference */
3566 ref = pat_ref_lookup(rule->arg.map.ref);
3567 if (!ref)
3568 continue;
3569
3570 /* collect key */
3571 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3572 key = trash.str;
3573 key[len] = '\0';
3574
3575 /* perform update */
3576 /* returned code: 1=ok, 0=ko */
3577 pat_ref_delete(ref, key);
3578
3579 break;
3580 }
3581
3582 case HTTP_RES_ACT_ADD_ACL: {
3583 struct pat_ref *ref;
3584 char *key;
3585 struct chunk *trash_key;
3586 int len;
3587
3588 trash_key = get_trash_chunk();
3589
3590 /* collect reference */
3591 ref = pat_ref_lookup(rule->arg.map.ref);
3592 if (!ref)
3593 continue;
3594
3595 /* collect key */
3596 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3597 key = trash_key->str;
3598 key[len] = '\0';
3599
3600 /* perform update */
3601 /* check if the entry already exists */
3602 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3603 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3604
3605 break;
3606 }
3607
3608 case HTTP_RES_ACT_SET_MAP: {
3609 struct pat_ref *ref;
3610 char *key, *value;
3611 struct chunk *trash_key, *trash_value;
3612 int len;
3613
3614 trash_key = get_trash_chunk();
3615 trash_value = get_trash_chunk();
3616
3617 /* collect reference */
3618 ref = pat_ref_lookup(rule->arg.map.ref);
3619 if (!ref)
3620 continue;
3621
3622 /* collect key */
3623 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3624 key = trash_key->str;
3625 key[len] = '\0';
3626
3627 /* collect value */
3628 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3629 value = trash_value->str;
3630 value[len] = '\0';
3631
3632 /* perform update */
3633 if (pat_ref_find_elt(ref, key) != NULL)
3634 /* update entry if it exists */
3635 pat_ref_set(ref, key, value, NULL);
3636 else
3637 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3638 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3639
3640 break;
3641 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3642
3643 case HTTP_RES_ACT_CUSTOM_CONT:
3644 rule->action_ptr(rule, px, s, txn);
3645 break;
3646
3647 case HTTP_RES_ACT_CUSTOM_STOP:
3648 rule->action_ptr(rule, px, s, txn);
3649 return rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3650 }
3651 }
3652
3653 /* we reached the end of the rules, nothing to report */
3654 return NULL;
3655}
3656
3657
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3658/* Perform an HTTP redirect based on the information in <rule>. The function
3659 * returns non-zero on success, or zero in case of a, irrecoverable error such
3660 * as too large a request to build a valid response.
3661 */
3662static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3663{
3664 struct http_msg *msg = &txn->req;
3665 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3666 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3667
3668 /* build redirect message */
3669 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3670 case 308:
3671 msg_fmt = HTTP_308;
3672 break;
3673 case 307:
3674 msg_fmt = HTTP_307;
3675 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3676 case 303:
3677 msg_fmt = HTTP_303;
3678 break;
3679 case 301:
3680 msg_fmt = HTTP_301;
3681 break;
3682 case 302:
3683 default:
3684 msg_fmt = HTTP_302;
3685 break;
3686 }
3687
3688 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3689 return 0;
3690
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3691 location = trash.str + trash.len;
3692
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3693 switch(rule->type) {
3694 case REDIRECT_TYPE_SCHEME: {
3695 const char *path;
3696 const char *host;
3697 struct hdr_ctx ctx;
3698 int pathlen;
3699 int hostlen;
3700
3701 host = "";
3702 hostlen = 0;
3703 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]3704 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]3705 host = ctx.line + ctx.val;
3706 hostlen = ctx.vlen;
3707 }
3708
3709 path = http_get_path(txn);
3710 /* build message using path */
3711 if (path) {
3712 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3713 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3714 int qs = 0;
3715 while (qs < pathlen) {
3716 if (path[qs] == '?') {
3717 pathlen = qs;
3718 break;
3719 }
3720 qs++;
3721 }
3722 }
3723 } else {
3724 path = "/";
3725 pathlen = 1;
3726 }
3727
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3728 if (rule->rdr_str) { /* this is an old "redirect" rule */
3729 /* check if we can add scheme + "://" + host + path */
3730 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3731 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3732
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3733 /* add scheme */
3734 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3735 trash.len += rule->rdr_len;
3736 }
3737 else {
3738 /* add scheme with executing log format */
3739 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]3740
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3741 /* check if we can add scheme + "://" + host + path */
3742 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3743 return 0;
3744 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3745 /* add "://" */
3746 memcpy(trash.str + trash.len, "://", 3);
3747 trash.len += 3;
3748
3749 /* add host */
3750 memcpy(trash.str + trash.len, host, hostlen);
3751 trash.len += hostlen;
3752
3753 /* add path */
3754 memcpy(trash.str + trash.len, path, pathlen);
3755 trash.len += pathlen;
3756
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3757 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3758 if (trash.len && trash.str[trash.len - 1] != '/' &&
3759 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3760 if (trash.len > trash.size - 5)
3761 return 0;
3762 trash.str[trash.len] = '/';
3763 trash.len++;
3764 }
3765
3766 break;
3767 }
3768 case REDIRECT_TYPE_PREFIX: {
3769 const char *path;
3770 int pathlen;
3771
3772 path = http_get_path(txn);
3773 /* build message using path */
3774 if (path) {
3775 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3776 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3777 int qs = 0;
3778 while (qs < pathlen) {
3779 if (path[qs] == '?') {
3780 pathlen = qs;
3781 break;
3782 }
3783 qs++;
3784 }
3785 }
3786 } else {
3787 path = "/";
3788 pathlen = 1;
3789 }
3790
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3791 if (rule->rdr_str) { /* this is an old "redirect" rule */
3792 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3793 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3794
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3795 /* add prefix. Note that if prefix == "/", we don't want to
3796 * add anything, otherwise it makes it hard for the user to
3797 * configure a self-redirection.
3798 */
3799 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3800 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3801 trash.len += rule->rdr_len;
3802 }
3803 }
3804 else {
3805 /* add prefix with executing log format */
3806 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3807
3808 /* Check length */
3809 if (trash.len + pathlen > trash.size - 4)
3810 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3811 }
3812
3813 /* add path */
3814 memcpy(trash.str + trash.len, path, pathlen);
3815 trash.len += pathlen;
3816
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3817 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3818 if (trash.len && trash.str[trash.len - 1] != '/' &&
3819 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3820 if (trash.len > trash.size - 5)
3821 return 0;
3822 trash.str[trash.len] = '/';
3823 trash.len++;
3824 }
3825
3826 break;
3827 }
3828 case REDIRECT_TYPE_LOCATION:
3829 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3830 if (rule->rdr_str) { /* this is an old "redirect" rule */
3831 if (trash.len + rule->rdr_len > trash.size - 4)
3832 return 0;
3833
3834 /* add location */
3835 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3836 trash.len += rule->rdr_len;
3837 }
3838 else {
3839 /* add location with executing log format */
3840 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]3841
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3842 /* Check left length */
3843 if (trash.len > trash.size - 4)
3844 return 0;
3845 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3846 break;
3847 }
3848
3849 if (rule->cookie_len) {
3850 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3851 trash.len += 14;
3852 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3853 trash.len += rule->cookie_len;
3854 memcpy(trash.str + trash.len, "\r\n", 2);
3855 trash.len += 2;
3856 }
3857
3858 /* add end of headers and the keep-alive/close status.
3859 * We may choose to set keep-alive if the Location begins
3860 * with a slash, because the client will come back to the
3861 * same server.
3862 */
3863 txn->status = rule->code;
3864 /* let's log the request time */
3865 s->logs.tv_request = now;
3866
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3867 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3868 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3869 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3870 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3871 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3872 /* keep-alive possible */
3873 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3874 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3875 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3876 trash.len += 30;
3877 } else {
3878 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3879 trash.len += 24;
3880 }
3881 }
3882 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3883 trash.len += 4;
3884 bo_inject(txn->rsp.chn, trash.str, trash.len);
3885 /* "eat" the request */
3886 bi_fast_delete(txn->req.chn->buf, msg->sov);
Willy Tarreau6d8bac72014-04-25 12:19:32 +0200[diff] [blame]3887 msg->next -= msg->sov;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3888 msg->sov = 0;
3889 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3890 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3891 txn->req.msg_state = HTTP_MSG_CLOSED;
3892 txn->rsp.msg_state = HTTP_MSG_DONE;
3893 } else {
3894 /* keep-alive not possible */
3895 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3896 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3897 trash.len += 29;
3898 } else {
3899 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3900 trash.len += 23;
3901 }
3902 stream_int_retnclose(txn->req.chn->prod, &trash);
3903 txn->req.chn->analysers = 0;
3904 }
3905
3906 if (!(s->flags & SN_ERR_MASK))
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3907 s->flags |= SN_ERR_LOCAL;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3908 if (!(s->flags & SN_FINST_MASK))
3909 s->flags |= SN_FINST_R;
3910
3911 return 1;
3912}
3913
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3914/* This stream analyser runs all HTTP request processing which is common to
3915 * frontends and backends, which means blocking ACLs, filters, connection-close,
3916 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3917 * 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]3918 * either needs more data or wants to immediately abort the request (eg: deny,
3919 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3920 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3921int 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]3922{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3923 struct http_txn *txn = &s->txn;
3924 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3925 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3926 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3927 enum rule_result verdict;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3928
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3929 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3930 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3931 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3932 return 0;
3933 }
3934
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3935 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]3936 now_ms, __FUNCTION__,
3937 s,
3938 req,
3939 req->rex, req->wex,
3940 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3941 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3942 req->analysers);
3943
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]3944 /* just in case we have some per-backend tracking */
3945 session_inc_be_http_req_ctr(s);
3946
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3947 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3948 if (!LIST_ISEMPTY(&px->http_req_rules)) {
3949 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, txn);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]3950
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3951 switch (verdict) {
3952 case HTTP_RULE_RES_CONT:
3953 case HTTP_RULE_RES_STOP: /* nothing to do */
3954 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3955
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3956 case HTTP_RULE_RES_DENY: /* deny or tarpit */
3957 if (txn->flags & TX_CLTARPIT)
3958 goto tarpit;
3959 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3960
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3961 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
3962 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3963
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3964 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3965 goto done;
3966
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3967 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
3968 goto return_bad_req;
3969 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3970 }
3971
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3972 /* OK at this stage, we know that the request was accepted according to
3973 * the http-request rules, we can check for the stats. Note that the
3974 * URI is detected *before* the req* rules in order not to be affected
3975 * by a possible reqrep, while they are processed *after* so that a
3976 * reqdeny can still block them. This clearly needs to change in 1.6!
3977 */
3978 if (stats_check_uri(s->rep->prod, txn, px)) {
3979 s->target = &http_stats_applet.obj_type;
3980 if (unlikely(!stream_int_register_handler(s->rep->prod, objt_applet(s->target)))) {
3981 txn->status = 500;
3982 s->logs.tv_request = now;
3983 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3984
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3985 if (!(s->flags & SN_ERR_MASK))
3986 s->flags |= SN_ERR_RESOURCE;
3987 goto return_prx_cond;
3988 }
3989
3990 /* parse the whole stats request and extract the relevant information */
3991 http_handle_stats(s, req);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3992 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, txn);
3993 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3994
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3995 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
3996 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3997
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3998 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
3999 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4000 }
4001
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4002 /* evaluate the req* rules except reqadd */
4003 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4004 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4005 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4006
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4007 if (txn->flags & TX_CLDENY)
4008 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4009
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4010 if (txn->flags & TX_CLTARPIT)
4011 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4012 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4013
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4014 /* add request headers from the rule sets in the same order */
4015 list_for_each_entry(wl, &px->req_add, list) {
4016 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]4017 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]4018 ret = acl_pass(ret);
4019 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4020 ret = !ret;
4021 if (!ret)
4022 continue;
4023 }
4024
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4025 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4026 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4027 }
4028
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4029
4030 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4031 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4032 /* process the stats request now */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4033 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
4034 s->fe->fe_counters.intercepted_req++;
4035
4036 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
4037 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
4038 if (!(s->flags & SN_FINST_MASK))
4039 s->flags |= SN_FINST_R;
4040
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4041 /* we may want to compress the stats page */
4042 if (s->fe->comp || s->be->comp)
4043 select_compression_request_header(s, req->buf);
4044
4045 /* 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]4046 req->analysers = (req->analysers & AN_REQ_HTTP_BODY) | AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4047 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4048 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4049
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4050 /* check whether we have some ACLs set to redirect this request */
4051 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4052 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4053 int ret;
4054
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]4055 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]4056 ret = acl_pass(ret);
4057 if (rule->cond->pol == ACL_COND_UNLESS)
4058 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4059 if (!ret)
4060 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4061 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4062 if (!http_apply_redirect_rule(rule, s, txn))
4063 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4064 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4065 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4066
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4067 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4068 * If this happens, then the data will not come immediately, so we must
4069 * send all what we have without waiting. Note that due to the small gain
4070 * 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]4071 * 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]4072 * itself once used.
4073 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4074 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4075
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4076 done: /* done with this analyser, continue with next ones that the calling
4077 * points will have set, if any.
4078 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4079 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIERfc566b52014-08-22 06:55:26 +0200[diff] [blame]4080 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4081 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4082 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4083
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4084 tarpit:
4085 /* When a connection is tarpitted, we use the tarpit timeout,
4086 * which may be the same as the connect timeout if unspecified.
4087 * If unset, then set it to zero because we really want it to
4088 * eventually expire. We build the tarpit as an analyser.
4089 */
4090 channel_erase(s->req);
4091
4092 /* wipe the request out so that we can drop the connection early
4093 * if the client closes first.
4094 */
4095 channel_dont_connect(req);
4096 req->analysers = 0; /* remove switching rules etc... */
4097 req->analysers |= AN_REQ_HTTP_TARPIT;
4098 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4099 if (!req->analyse_exp)
4100 req->analyse_exp = tick_add(now_ms, 0);
4101 session_inc_http_err_ctr(s);
4102 s->fe->fe_counters.denied_req++;
4103 if (s->fe != s->be)
4104 s->be->be_counters.denied_req++;
4105 if (s->listener->counters)
4106 s->listener->counters->denied_req++;
Thierry FOURNIERfc566b52014-08-22 06:55:26 +0200[diff] [blame]4107 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4108
4109 deny: /* this request was blocked (denied) */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4110 txn->flags |= TX_CLDENY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4111 txn->status = 403;
4112 s->logs.tv_request = now;
4113 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
4114 session_inc_http_err_ctr(s);
4115 s->fe->fe_counters.denied_req++;
4116 if (s->fe != s->be)
4117 s->be->be_counters.denied_req++;
4118 if (s->listener->counters)
4119 s->listener->counters->denied_req++;
4120 goto return_prx_cond;
4121
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4122 return_bad_req:
4123 /* We centralize bad requests processing here */
4124 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4125 /* we detected a parsing error. We want to archive this request
4126 * in the dedicated proxy area for later troubleshooting.
4127 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4128 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]4129 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4130
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4131 txn->req.msg_state = HTTP_MSG_ERROR;
4132 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4133 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4134
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4135 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4136 if (s->listener->counters)
4137 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4138
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4139 return_prx_cond:
4140 if (!(s->flags & SN_ERR_MASK))
4141 s->flags |= SN_ERR_PRXCOND;
4142 if (!(s->flags & SN_FINST_MASK))
4143 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4144
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4145 req->analysers = 0;
4146 req->analyse_exp = TICK_ETERNITY;
4147 return 0;
4148}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4149
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4150/* This function performs all the processing enabled for the current request.
4151 * It returns 1 if the processing can continue on next analysers, or zero if it
4152 * needs more data, encounters an error, or wants to immediately abort the
4153 * request. It relies on buffers flags, and updates s->req->analysers.
4154 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4155int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4156{
4157 struct http_txn *txn = &s->txn;
4158 struct http_msg *msg = &txn->req;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4159 struct connection *cli_conn = objt_conn(req->prod->end);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4160
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4161 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4162 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4163 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4164 return 0;
4165 }
4166
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4167 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]4168 now_ms, __FUNCTION__,
4169 s,
4170 req,
4171 req->rex, req->wex,
4172 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4173 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4174 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4175
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]4176 if (s->fe->comp || s->be->comp)
4177 select_compression_request_header(s, req->buf);
4178
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4179 /*
4180 * Right now, we know that we have processed the entire headers
4181 * and that unwanted requests have been filtered out. We can do
4182 * whatever we want with the remaining request. Also, now we
4183 * may have separate values for ->fe, ->be.
4184 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4185
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4186 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4187 * If HTTP PROXY is set we simply get remote server address parsing
4188 * incoming request. Note that this requires that a connection is
4189 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4190 */
4191 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4192 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4193 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4194
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4195 /* Note that for now we don't reuse existing proxy connections */
4196 if (unlikely((conn = si_alloc_conn(req->cons, 0)) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4197 txn->req.msg_state = HTTP_MSG_ERROR;
4198 txn->status = 500;
4199 req->analysers = 0;
4200 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
4201
4202 if (!(s->flags & SN_ERR_MASK))
4203 s->flags |= SN_ERR_RESOURCE;
4204 if (!(s->flags & SN_FINST_MASK))
4205 s->flags |= SN_FINST_R;
4206
4207 return 0;
4208 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4209
4210 path = http_get_path(txn);
4211 url2sa(req->buf->p + msg->sl.rq.u,
4212 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4213 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4214 /* if the path was found, we have to remove everything between
4215 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4216 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4217 * u_l characters by a single "/".
4218 */
4219 if (path) {
4220 char *cur_ptr = req->buf->p;
4221 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4222 int delta;
4223
4224 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4225 http_msg_move_end(&txn->req, delta);
4226 cur_end += delta;
4227 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4228 goto return_bad_req;
4229 }
4230 else {
4231 char *cur_ptr = req->buf->p;
4232 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4233 int delta;
4234
4235 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4236 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4237 http_msg_move_end(&txn->req, delta);
4238 cur_end += delta;
4239 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4240 goto return_bad_req;
4241 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4242 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4243
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4244 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4245 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4246 * Note that doing so might move headers in the request, but
4247 * the fields will stay coherent and the URI will not move.
4248 * This should only be performed in the backend.
4249 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4250 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4251 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
4252 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4253
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4254 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4255 * 8: the appsession cookie was looked up very early in 1.2,
4256 * so let's do the same now.
4257 */
4258
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4259 /* It needs to look into the URI unless persistence must be ignored */
4260 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4261 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]4262 }
4263
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4264 /* add unique-id if "header-unique-id" is specified */
4265
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4266 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
4267 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4268 goto return_bad_req;
4269 s->unique_id[0] = '\0';
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4270 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4271 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4272
4273 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4274 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
4275 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4276 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4277 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]4278 goto return_bad_req;
4279 }
4280
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4281 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4282 * 9: add X-Forwarded-For if either the frontend or the backend
4283 * asks for it.
4284 */
4285 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4286 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4287 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]4288 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
4289 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]4290 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4291 /* The header is set to be added only if none is present
4292 * and we found it, so don't do anything.
4293 */
4294 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4295 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4296 /* Add an X-Forwarded-For header unless the source IP is
4297 * in the 'except' network range.
4298 */
4299 if ((!s->fe->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4300 (((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]4301 != s->fe->except_net.s_addr) &&
4302 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4303 (((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]4304 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4305 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4306 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4307 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4308
4309 /* Note: we rely on the backend to get the header name to be used for
4310 * x-forwarded-for, because the header is really meant for the backends.
4311 * However, if the backend did not specify any option, we have to rely
4312 * on the frontend's header name.
4313 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4314 if (s->be->fwdfor_hdr_len) {
4315 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4316 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4317 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4318 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4319 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4320 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4321 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]4322
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4323 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]4324 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4325 }
4326 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4327 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4328 /* FIXME: for the sake of completeness, we should also support
4329 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4330 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4331 int len;
4332 char pn[INET6_ADDRSTRLEN];
4333 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4334 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4335 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4336
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4337 /* Note: we rely on the backend to get the header name to be used for
4338 * x-forwarded-for, because the header is really meant for the backends.
4339 * However, if the backend did not specify any option, we have to rely
4340 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4341 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4342 if (s->be->fwdfor_hdr_len) {
4343 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4344 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4345 } else {
4346 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4347 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4348 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4349 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4350
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4351 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]4352 goto return_bad_req;
4353 }
4354 }
4355
4356 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4357 * 10: add X-Original-To if either the frontend or the backend
4358 * asks for it.
4359 */
4360 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
4361
4362 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4363 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4364 /* Add an X-Original-To header unless the destination IP is
4365 * in the 'except' network range.
4366 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4367 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4368
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4369 if (cli_conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4370 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4371 (((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]4372 != s->fe->except_to.s_addr) &&
4373 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4374 (((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]4375 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4376 int len;
4377 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4378 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4379
4380 /* Note: we rely on the backend to get the header name to be used for
4381 * x-original-to, because the header is really meant for the backends.
4382 * However, if the backend did not specify any option, we have to rely
4383 * on the frontend's header name.
4384 */
4385 if (s->be->orgto_hdr_len) {
4386 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4387 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4388 } else {
4389 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4390 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4391 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4392 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]4393
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4394 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]4395 goto return_bad_req;
4396 }
4397 }
4398 }
4399
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4400 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4401 * If an "Upgrade" token is found, the header is left untouched in order not to have
4402 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4403 * "Upgrade" is present in the Connection header.
4404 */
4405 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4406 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4407 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4408 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4409 unsigned int want_flags = 0;
4410
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4411 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4412 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4413 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4414 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4415 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4416 want_flags |= TX_CON_CLO_SET;
4417 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4418 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4419 ((s->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
4420 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4421 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4422 want_flags |= TX_CON_KAL_SET;
4423 }
4424
4425 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4426 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4427 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4428
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4429
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4430 /* If we have no server assigned yet and we're balancing on url_param
4431 * with a POST request, we may be interested in checking the body for
4432 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4433 */
4434 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
4435 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4436 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4437 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4438 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4439 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4440
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4441 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4442 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4443#ifdef TCP_QUICKACK
4444 /* We expect some data from the client. Unless we know for sure
4445 * we already have a full request, we have to re-enable quick-ack
4446 * in case we previously disabled it, otherwise we might cause
4447 * the client to delay further data.
4448 */
4449 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4450 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4451 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4452 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4453 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4454#endif
4455 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4456
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4457 /*************************************************************
4458 * OK, that's finished for the headers. We have done what we *
4459 * could. Let's switch to the DATA state. *
4460 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4461 req->analyse_exp = TICK_ETERNITY;
4462 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4463
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4464 /* if the server closes the connection, we want to immediately react
4465 * and close the socket to save packets and syscalls.
4466 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4467 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
4468 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4469
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4470 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4471 /* OK let's go on with the BODY now */
4472 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4473
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4474 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4475 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4476 /* we detected a parsing error. We want to archive this request
4477 * in the dedicated proxy area for later troubleshooting.
4478 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4479 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]4480 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4481
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4482 txn->req.msg_state = HTTP_MSG_ERROR;
4483 txn->status = 400;
4484 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4485 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4486
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4487 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4488 if (s->listener->counters)
4489 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4490
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4491 if (!(s->flags & SN_ERR_MASK))
4492 s->flags |= SN_ERR_PRXCOND;
4493 if (!(s->flags & SN_FINST_MASK))
4494 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4495 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4496}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4497
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4498/* This function is an analyser which processes the HTTP tarpit. It always
4499 * returns zero, at the beginning because it prevents any other processing
4500 * from occurring, and at the end because it terminates the request.
4501 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4502int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4503{
4504 struct http_txn *txn = &s->txn;
4505
4506 /* This connection is being tarpitted. The CLIENT side has
4507 * already set the connect expiration date to the right
4508 * timeout. We just have to check that the client is still
4509 * there and that the timeout has not expired.
4510 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4511 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4512 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4513 !tick_is_expired(req->analyse_exp, now_ms))
4514 return 0;
4515
4516 /* We will set the queue timer to the time spent, just for
4517 * logging purposes. We fake a 500 server error, so that the
4518 * attacker will not suspect his connection has been tarpitted.
4519 * It will not cause trouble to the logs because we can exclude
4520 * the tarpitted connections by filtering on the 'PT' status flags.
4521 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4522 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4523
4524 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4525 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4526 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4527
4528 req->analysers = 0;
4529 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4530
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4531 if (!(s->flags & SN_ERR_MASK))
4532 s->flags |= SN_ERR_PRXCOND;
4533 if (!(s->flags & SN_FINST_MASK))
4534 s->flags |= SN_FINST_T;
4535 return 0;
4536}
4537
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4538/* This function is an analyser which waits for the HTTP request body. It waits
4539 * for either the buffer to be full, or the full advertised contents to have
4540 * reached the buffer. It must only be called after the standard HTTP request
4541 * processing has occurred, because it expects the request to be parsed and will
4542 * look for the Expect header. It may send a 100-Continue interim response. It
4543 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4544 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4545 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4546 */
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4547int http_wait_for_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4548{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4549 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4550 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4551
4552 /* We have to parse the HTTP request body to find any required data.
4553 * "balance url_param check_post" should have been the only way to get
4554 * into this. We were brought here after HTTP header analysis, so all
4555 * related structures are ready.
4556 */
4557
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4558 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4559 /* This is the first call */
4560 if (msg->msg_state < HTTP_MSG_BODY)
4561 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4562
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4563 if (msg->msg_state < HTTP_MSG_100_SENT) {
4564 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4565 * send an HTTP/1.1 100 Continue intermediate response.
4566 */
4567 if (msg->flags & HTTP_MSGF_VER_11) {
4568 struct hdr_ctx ctx;
4569 ctx.idx = 0;
4570 /* Expect is allowed in 1.1, look for it */
4571 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4572 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
4573 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
4574 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4575 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4576 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4577 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4578
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4579 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4580 * req->buf->p still points to the beginning of the message. We
4581 * must save the body in msg->next because it survives buffer
4582 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4583 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4584 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4585
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4586 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4587 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4588 else
4589 msg->msg_state = HTTP_MSG_DATA;
4590 }
4591
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4592 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4593 /* We're in content-length mode, we just have to wait for enough data. */
4594 if (req->buf->i - msg->sov < msg->body_len)
4595 goto missing_data;
4596
4597 /* OK we have everything we need now */
4598 goto http_end;
4599 }
4600
4601 /* OK here we're parsing a chunked-encoded message */
4602
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4603 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4604 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4605 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4606 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4607 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4608 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4609
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4610 if (!ret)
4611 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4612 else if (ret < 0) {
4613 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4614 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4615 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4616 }
4617
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4618 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4619 * 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]4620 * least a whole chunk or the whole content length bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4621 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4622 if (msg->msg_state == HTTP_MSG_TRAILERS)
4623 goto http_end;
4624
Willy Tarreau226071e2014-04-10 11:55:45 +0200[diff] [blame]4625 if (req->buf->i - msg->sov >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4626 goto http_end;
4627
4628 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4629 /* we get here if we need to wait for more data. If the buffer is full,
4630 * we have the maximum we can expect.
4631 */
4632 if (buffer_full(req->buf, global.tune.maxrewrite))
4633 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4634
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4635 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4636 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4637 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4638
4639 if (!(s->flags & SN_ERR_MASK))
4640 s->flags |= SN_ERR_CLITO;
4641 if (!(s->flags & SN_FINST_MASK))
4642 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4643 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4644 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4645
4646 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4647 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4648 /* Not enough data. We'll re-use the http-request
4649 * timeout here. Ideally, we should set the timeout
4650 * relative to the accept() date. We just set the
4651 * request timeout once at the beginning of the
4652 * request.
4653 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4654 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4655 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4656 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4657 return 0;
4658 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4659
4660 http_end:
4661 /* The situation will not evolve, so let's give up on the analysis. */
4662 s->logs.tv_request = now; /* update the request timer to reflect full request */
4663 req->analysers &= ~an_bit;
4664 req->analyse_exp = TICK_ETERNITY;
4665 return 1;
4666
4667 return_bad_req: /* let's centralize all bad requests */
4668 txn->req.msg_state = HTTP_MSG_ERROR;
4669 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4670 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4671
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4672 if (!(s->flags & SN_ERR_MASK))
4673 s->flags |= SN_ERR_PRXCOND;
4674 if (!(s->flags & SN_FINST_MASK))
4675 s->flags |= SN_FINST_R;
4676
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4677 return_err_msg:
4678 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4679 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4680 if (s->listener->counters)
4681 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4682 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4683}
4684
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4685/* send a server's name with an outgoing request over an established connection.
4686 * Note: this function is designed to be called once the request has been scheduled
4687 * for being forwarded. This is the reason why it rewinds the buffer before
4688 * proceeding.
4689 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4690int 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]4691
4692 struct hdr_ctx ctx;
4693
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4694 char *hdr_name = be->server_id_hdr_name;
4695 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4696 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4697 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4698 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4699
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4700 ctx.idx = 0;
4701
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4702 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4703 if (old_o) {
4704 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4705 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4706 txn->req.next += old_o;
4707 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4708 }
4709
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4710 old_i = chn->buf->i;
4711 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]4712 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4713 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4714 }
4715
4716 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4717 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4718 memcpy(hdr_val, hdr_name, hdr_name_len);
4719 hdr_val += hdr_name_len;
4720 *hdr_val++ = ':';
4721 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4722 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4723 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]4724
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4725 if (old_o) {
4726 /* If this was a forwarded request, we must readjust the amount of
4727 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4728 * variations. Note that the current state is >= HTTP_MSG_BODY,
4729 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4730 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4731 old_o += chn->buf->i - old_i;
4732 b_adv(chn->buf, old_o);
4733 txn->req.next -= old_o;
4734 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4735 }
4736
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4737 return 0;
4738}
4739
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4740/* Terminate current transaction and prepare a new one. This is very tricky
4741 * right now but it works.
4742 */
4743void http_end_txn_clean_session(struct session *s)
4744{
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4745 int prev_status = s->txn.status;
4746
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4747 /* FIXME: We need a more portable way of releasing a backend's and a
4748 * server's connections. We need a safer way to reinitialize buffer
4749 * flags. We also need a more accurate method for computing per-request
4750 * data.
4751 */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4752
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4753 /* unless we're doing keep-alive, we want to quickly close the connection
4754 * to the server.
4755 */
4756 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4757 !si_conn_ready(s->req->cons)) {
4758 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4759 si_shutr(s->req->cons);
4760 si_shutw(s->req->cons);
4761 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4762
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4763 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4764 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4765 if (unlikely(s->srv_conn))
4766 sess_change_server(s, NULL);
4767 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4768
4769 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4770 session_process_counters(s);
4771
4772 if (s->txn.status) {
4773 int n;
4774
4775 n = s->txn.status / 100;
4776 if (n < 1 || n > 5)
4777 n = 0;
4778
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4779 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4780 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4781 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4782 s->fe->fe_counters.p.http.comp_rsp++;
4783 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4784 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4785 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4786 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4787 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4788 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4789 s->be->be_counters.p.http.comp_rsp++;
4790 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4791 }
4792
4793 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4794 s->logs.bytes_in -= s->req->buf->i;
4795 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4796
4797 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4798 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4799 !(s->flags & SN_MONITOR) &&
4800 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4801 s->do_log(s);
4802 }
4803
Willy Tarreauc177ea72014-06-25 15:36:04 +0200[diff] [blame]4804 /* stop tracking content-based counters */
4805 session_stop_content_counters(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]4806 session_update_time_stats(s);
4807
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4808 s->logs.accept_date = date; /* user-visible date for logging */
4809 s->logs.tv_accept = now; /* corrected date for internal use */
4810 tv_zero(&s->logs.tv_request);
4811 s->logs.t_queue = -1;
4812 s->logs.t_connect = -1;
4813 s->logs.t_data = -1;
4814 s->logs.t_close = 0;
4815 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4816 s->logs.srv_queue_size = 0; /* we will get this number soon */
4817
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4818 s->logs.bytes_in = s->req->total = s->req->buf->i;
4819 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4820
4821 if (s->pend_pos)
4822 pendconn_free(s->pend_pos);
4823
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4824 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4825 if (s->flags & SN_CURR_SESS) {
4826 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4827 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4828 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4829 if (may_dequeue_tasks(objt_server(s->target), s->be))
4830 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4831 }
4832
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4833 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4834
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4835 /* only release our endpoint if we don't intend to reuse the
4836 * connection.
4837 */
4838 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4839 !si_conn_ready(s->req->cons)) {
4840 si_release_endpoint(s->req->cons);
4841 }
4842
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4843 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4844 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4845 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4846 s->req->cons->exp = TICK_ETERNITY;
Willy Tarreauc9200962013-12-31 23:03:09 +0100[diff] [blame]4847 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]4848 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);
4849 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]4850 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]4851 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE|SN_SRV_REUSED);
Cyril Bonté17f77072014-10-22 22:30:13 +0200[diff] [blame]4852 s->flags &= ~(SN_ERR_MASK|SN_FINST_MASK|SN_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4853
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4854 s->txn.meth = 0;
4855 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4856 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4857
4858 if (prev_status == 401 || prev_status == 407) {
4859 /* In HTTP keep-alive mode, if we receive a 401, we still have
4860 * a chance of being able to send the visitor again to the same
4861 * server over the same connection. This is required by some
4862 * broken protocols such as NTLM, and anyway whenever there is
4863 * an opportunity for sending the challenge to the proper place,
4864 * it's better to do it (at least it helps with debugging).
4865 */
4866 s->txn.flags |= TX_PREFER_LAST;
4867 }
4868
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4869 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4870 s->req->cons->flags |= SI_FL_INDEP_STR;
4871
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4872 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4873 s->req->flags |= CF_NEVER_WAIT;
4874 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4875 }
4876
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4877 /* if the request buffer is not empty, it means we're
4878 * about to process another request, so send pending
4879 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4880 * Just don't do this if the buffer is close to be full,
4881 * because the request will wait for it to flush a little
4882 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4883 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4884 if (s->req->buf->i) {
4885 if (s->rep->buf->o &&
4886 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4887 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]4888 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4889 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4890
4891 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4892 channel_auto_read(s->req);
4893 channel_auto_close(s->req);
4894 channel_auto_read(s->rep);
4895 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4896
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]4897 /* we're in keep-alive with an idle connection, monitor it */
4898 si_idle_conn(s->req->cons);
4899
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4900 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4901 s->rep->analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4902}
4903
4904
4905/* This function updates the request state machine according to the response
4906 * state machine and buffer flags. It returns 1 if it changes anything (flag
4907 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4908 * it is only used to find when a request/response couple is complete. Both
4909 * this function and its equivalent should loop until both return zero. It
4910 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4911 */
4912int http_sync_req_state(struct session *s)
4913{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4914 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4915 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4916 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4917 unsigned int old_state = txn->req.msg_state;
4918
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4919 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4920 return 0;
4921
4922 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4923 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4924 * We can shut the read side unless we want to abort_on_close,
4925 * or we have a POST request. The issue with POST requests is
4926 * that some browsers still send a CRLF after the request, and
4927 * this CRLF must be read so that it does not remain in the kernel
4928 * buffers, otherwise a close could cause an RST on some systems
4929 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4930 * Note that if we're using keep-alive on the client side, we'd
4931 * rather poll now and keep the polling enabled for the whole
4932 * session's life than enabling/disabling it between each
4933 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4934 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4935 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
4936 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
4937 !(s->be->options & PR_O_ABRT_CLOSE) &&
4938 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4939 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4940
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4941 /* if the server closes the connection, we want to immediately react
4942 * and close the socket to save packets and syscalls.
4943 */
4944 chn->cons->flags |= SI_FL_NOHALF;
4945
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4946 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4947 goto wait_other_side;
4948
4949 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4950 /* The server has not finished to respond, so we
4951 * don't want to move in order not to upset it.
4952 */
4953 goto wait_other_side;
4954 }
4955
4956 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4957 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4958 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4959 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4960 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4961 goto wait_other_side;
4962 }
4963
4964 /* When we get here, it means that both the request and the
4965 * response have finished receiving. Depending on the connection
4966 * mode, we'll have to wait for the last bytes to leave in either
4967 * direction, and sometimes for a close to be effective.
4968 */
4969
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4970 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4971 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4972 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4973 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4974 }
4975 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4976 /* Option forceclose is set, or either side wants to close,
4977 * let's enforce it now that we're not expecting any new
4978 * data to come. The caller knows the session is complete
4979 * once both states are CLOSED.
4980 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4981 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4982 channel_shutr_now(chn);
4983 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4984 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4985 }
4986 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4987 /* The last possible modes are keep-alive and tunnel. Tunnel mode
4988 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4989 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4990 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
4991 channel_auto_read(chn);
4992 txn->req.msg_state = HTTP_MSG_TUNNEL;
4993 chn->flags |= CF_NEVER_WAIT;
4994 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4995 }
4996
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4997 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4998 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4999 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5000
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5001 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5002 txn->req.msg_state = HTTP_MSG_CLOSING;
5003 goto http_msg_closing;
5004 }
5005 else {
5006 txn->req.msg_state = HTTP_MSG_CLOSED;
5007 goto http_msg_closed;
5008 }
5009 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5010 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5011 }
5012
5013 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5014 http_msg_closing:
5015 /* nothing else to forward, just waiting for the output buffer
5016 * to be empty and for the shutw_now to take effect.
5017 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5018 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5019 txn->req.msg_state = HTTP_MSG_CLOSED;
5020 goto http_msg_closed;
5021 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5022 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5023 txn->req.msg_state = HTTP_MSG_ERROR;
5024 goto wait_other_side;
5025 }
5026 }
5027
5028 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5029 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5030 /* see above in MSG_DONE why we only do this in these states */
5031 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5032 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5033 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5034 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5035 goto wait_other_side;
5036 }
5037
5038 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5039 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5040}
5041
5042
5043/* This function updates the response state machine according to the request
5044 * state machine and buffer flags. It returns 1 if it changes anything (flag
5045 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5046 * it is only used to find when a request/response couple is complete. Both
5047 * this function and its equivalent should loop until both return zero. It
5048 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5049 */
5050int http_sync_res_state(struct session *s)
5051{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5052 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5053 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5054 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5055 unsigned int old_state = txn->rsp.msg_state;
5056
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5057 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5058 return 0;
5059
5060 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5061 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5062 * still monitor the server connection for a possible close
5063 * while the request is being uploaded, so we don't disable
5064 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5065 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5066 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5067
5068 if (txn->req.msg_state == HTTP_MSG_ERROR)
5069 goto wait_other_side;
5070
5071 if (txn->req.msg_state < HTTP_MSG_DONE) {
5072 /* The client seems to still be sending data, probably
5073 * because we got an error response during an upload.
5074 * We have the choice of either breaking the connection
5075 * or letting it pass through. Let's do the later.
5076 */
5077 goto wait_other_side;
5078 }
5079
5080 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5081 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5082 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5083 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5084 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5085 goto wait_other_side;
5086 }
5087
5088 /* When we get here, it means that both the request and the
5089 * response have finished receiving. Depending on the connection
5090 * mode, we'll have to wait for the last bytes to leave in either
5091 * direction, and sometimes for a close to be effective.
5092 */
5093
5094 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5095 /* Server-close mode : shut read and wait for the request
5096 * side to close its output buffer. The caller will detect
5097 * when we're in DONE and the other is in CLOSED and will
5098 * catch that for the final cleanup.
5099 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5100 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5101 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5102 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5103 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5104 /* Option forceclose is set, or either side wants to close,
5105 * let's enforce it now that we're not expecting any new
5106 * data to come. The caller knows the session is complete
5107 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5108 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5109 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5110 channel_shutr_now(chn);
5111 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5112 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5113 }
5114 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5115 /* The last possible modes are keep-alive and tunnel. Tunnel will
5116 * need to forward remaining data. Keep-alive will need to monitor
5117 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5118 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5119 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5120 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5121 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5122 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5123 }
5124
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5125 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5126 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5127 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5128 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5129 goto http_msg_closing;
5130 }
5131 else {
5132 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5133 goto http_msg_closed;
5134 }
5135 }
5136 goto wait_other_side;
5137 }
5138
5139 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5140 http_msg_closing:
5141 /* nothing else to forward, just waiting for the output buffer
5142 * to be empty and for the shutw_now to take effect.
5143 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5144 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5145 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5146 goto http_msg_closed;
5147 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5148 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5149 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5150 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5151 if (objt_server(s->target))
5152 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5153 goto wait_other_side;
5154 }
5155 }
5156
5157 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5158 http_msg_closed:
5159 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5160 bi_erase(chn);
5161 channel_auto_close(chn);
5162 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5163 goto wait_other_side;
5164 }
5165
5166 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5167 /* We force the response to leave immediately if we're waiting for the
5168 * other side, since there is no pending shutdown to push it out.
5169 */
5170 if (!channel_is_empty(chn))
5171 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5172 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5173}
5174
5175
5176/* Resync the request and response state machines. Return 1 if either state
5177 * changes.
5178 */
5179int http_resync_states(struct session *s)
5180{
5181 struct http_txn *txn = &s->txn;
5182 int old_req_state = txn->req.msg_state;
5183 int old_res_state = txn->rsp.msg_state;
5184
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5185 http_sync_req_state(s);
5186 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5187 if (!http_sync_res_state(s))
5188 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5189 if (!http_sync_req_state(s))
5190 break;
5191 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5192
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5193 /* OK, both state machines agree on a compatible state.
5194 * There are a few cases we're interested in :
5195 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5196 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5197 * directions, so let's simply disable both analysers.
5198 * - HTTP_MSG_CLOSED on the response only means we must abort the
5199 * request.
5200 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5201 * with server-close mode means we've completed one request and we
5202 * must re-initialize the server connection.
5203 */
5204
5205 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5206 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5207 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5208 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
5209 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5210 channel_auto_close(s->req);
5211 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5212 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5213 channel_auto_close(s->rep);
5214 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5215 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5216 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
5217 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5218 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5219 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5220 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5221 channel_auto_close(s->rep);
5222 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5223 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5224 channel_abort(s->req);
5225 channel_auto_close(s->req);
5226 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5227 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5228 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5229 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5230 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5231 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5232 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5233 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5234 /* server-close/keep-alive: terminate this transaction,
5235 * possibly killing the server connection and reinitialize
5236 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5237 */
5238 http_end_txn_clean_session(s);
5239 }
5240
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5241 return txn->req.msg_state != old_req_state ||
5242 txn->rsp.msg_state != old_res_state;
5243}
5244
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5245/* This function is an analyser which forwards request body (including chunk
5246 * sizes if any). It is called as soon as we must forward, even if we forward
5247 * zero byte. The only situation where it must not be called is when we're in
5248 * tunnel mode and we want to forward till the close. It's used both to forward
5249 * remaining data and to resync after end of body. It expects the msg_state to
5250 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5251 * 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]5252 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5253 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5254 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5255int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5256{
5257 struct http_txn *txn = &s->txn;
5258 struct http_msg *msg = &s->txn.req;
5259
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5260 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5261 return 0;
5262
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5263 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]5264 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5265 /* Output closed while we were sending data. We must abort and
5266 * wake the other side up.
5267 */
5268 msg->msg_state = HTTP_MSG_ERROR;
5269 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5270 return 1;
5271 }
5272
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5273 /* Note that we don't have to send 100-continue back because we don't
5274 * need the data to complete our job, and it's up to the server to
5275 * decide whether to return 100, 417 or anything else in return of
5276 * an "Expect: 100-continue" header.
5277 */
5278
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5279 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5280 /* we have msg->sov which points to the first byte of message
5281 * body, and req->buf.p still points to the beginning of the
5282 * message. We forward the headers now, as we don't need them
5283 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5284 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5285 b_adv(req->buf, msg->sov);
5286 msg->next -= msg->sov;
5287 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5288
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5289 /* The previous analysers guarantee that the state is somewhere
5290 * between MSG_BODY and the first MSG_DATA. So msg->sol and
5291 * msg->next are always correct.
5292 */
5293 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
5294 if (msg->flags & HTTP_MSGF_TE_CHNK)
5295 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5296 else
5297 msg->msg_state = HTTP_MSG_DATA;
5298 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5299 }
5300
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5301 /* Some post-connect processing might want us to refrain from starting to
5302 * forward data. Currently, the only reason for this is "balance url_param"
5303 * whichs need to parse/process the request after we've enabled forwarding.
5304 */
5305 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
5306 if (!(s->rep->flags & CF_READ_ATTACHED)) {
5307 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5308 req->flags |= CF_WAKE_CONNECT;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5309 goto missing_data;
5310 }
5311 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5312 }
5313
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5314 /* in most states, we should abort in case of early close */
5315 channel_auto_close(req);
5316
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5317 if (req->to_forward) {
5318 /* We can't process the buffer's contents yet */
5319 req->flags |= CF_WAKE_WRITE;
5320 goto missing_data;
5321 }
5322
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5323 while (1) {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5324 if (msg->msg_state == HTTP_MSG_DATA) {
5325 /* must still forward */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5326 /* we may have some pending data starting at req->buf->p */
5327 if (msg->chunk_len > req->buf->i - msg->next) {
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5328 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5329 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5330 }
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5331 msg->next += msg->chunk_len;
5332 msg->chunk_len = 0;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5333
5334 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5335 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5336 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5337 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5338 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5339 }
5340 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5341 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5342 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5343 * TRAILERS state.
5344 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5345 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5346
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5347 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5348 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5349 else if (ret < 0) {
5350 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5351 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5352 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]5353 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5354 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5355 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5356 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5357 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5358 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5359 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5360
5361 if (ret == 0)
5362 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5363 else if (ret < 0) {
5364 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5365 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5366 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]5367 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5368 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5369 /* we're in MSG_CHUNK_SIZE now */
5370 }
5371 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5372 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5373
5374 if (ret == 0)
5375 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5376 else if (ret < 0) {
5377 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5378 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5379 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]5380 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5381 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5382 /* we're in HTTP_MSG_DONE now */
5383 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5384 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5385 int old_state = msg->msg_state;
5386
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5387 /* other states, DONE...TUNNEL */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5388
5389 /* we may have some pending data starting at req->buf->p
5390 * such as last chunk of data or trailers.
5391 */
5392 b_adv(req->buf, msg->next);
Willy Tarreaub4d05092014-09-01 20:35:55 +0200[diff] [blame]5393 if (unlikely(!(s->req->flags & CF_WROTE_DATA)))
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5394 msg->sov -= msg->next;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5395 msg->next = 0;
5396
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5397 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5398 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5399 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5400 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5401 if (http_resync_states(s)) {
5402 /* some state changes occurred, maybe the analyser
5403 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5404 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5405 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5406 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5407 /* request errors are most likely due to
5408 * the server aborting the transfer.
5409 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5410 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5411 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5412 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5413 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5414 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5415 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5416 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5417 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5418
5419 /* If "option abortonclose" is set on the backend, we
5420 * want to monitor the client's connection and forward
5421 * any shutdown notification to the server, which will
5422 * decide whether to close or to go on processing the
5423 * request.
5424 */
5425 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5426 channel_auto_read(req);
5427 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5428 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5429 else if (s->txn.meth == HTTP_METH_POST) {
5430 /* POST requests may require to read extra CRLF
5431 * sent by broken browsers and which could cause
5432 * an RST to be sent upon close on some systems
5433 * (eg: Linux).
5434 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5435 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5436 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5437
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5438 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5439 }
5440 }
5441
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5442 missing_data:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5443 /* we may have some pending data starting at req->buf->p */
5444 b_adv(req->buf, msg->next);
Willy Tarreaub4d05092014-09-01 20:35:55 +0200[diff] [blame]5445 if (unlikely(!(s->req->flags & CF_WROTE_DATA)))
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5446 msg->sov -= msg->next + MIN(msg->chunk_len, req->buf->i);
5447
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5448 msg->next = 0;
5449 msg->chunk_len -= channel_forward(req, msg->chunk_len);
5450
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5451 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5452 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5453 if (!(s->flags & SN_ERR_MASK))
5454 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5455 if (!(s->flags & SN_FINST_MASK)) {
5456 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5457 s->flags |= SN_FINST_H;
5458 else
5459 s->flags |= SN_FINST_D;
5460 }
5461
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5462 s->fe->fe_counters.cli_aborts++;
5463 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5464 if (objt_server(s->target))
5465 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5466
5467 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5468 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5469
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5470 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5471 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5472 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5473
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5474 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5475 * 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]5476 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5477 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5478 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5479
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5480 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5481 * 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]5482 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5483 * modes are already handled by the stream sock layer. We must not do
5484 * this in content-length mode because it could present the MSG_MORE
5485 * flag with the last block of forwarded data, which would cause an
5486 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5487 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5488 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5489 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5490
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5491 return 0;
5492
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5493 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5494 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5495 if (s->listener->counters)
5496 s->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5497
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5498 return_bad_req_stats_ok:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5499 /* we may have some pending data starting at req->buf->p */
5500 b_adv(req->buf, msg->next);
5501 msg->next = 0;
5502
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5503 txn->req.msg_state = HTTP_MSG_ERROR;
5504 if (txn->status) {
5505 /* Note: we don't send any error if some data were already sent */
5506 stream_int_retnclose(req->prod, NULL);
5507 } else {
5508 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5509 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5510 }
5511 req->analysers = 0;
5512 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]5513
5514 if (!(s->flags & SN_ERR_MASK))
5515 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5516 if (!(s->flags & SN_FINST_MASK)) {
5517 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5518 s->flags |= SN_FINST_H;
5519 else
5520 s->flags |= SN_FINST_D;
5521 }
5522 return 0;
5523
5524 aborted_xfer:
5525 txn->req.msg_state = HTTP_MSG_ERROR;
5526 if (txn->status) {
5527 /* Note: we don't send any error if some data were already sent */
5528 stream_int_retnclose(req->prod, NULL);
5529 } else {
5530 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5531 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5532 }
5533 req->analysers = 0;
5534 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5535
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5536 s->fe->fe_counters.srv_aborts++;
5537 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5538 if (objt_server(s->target))
5539 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5540
5541 if (!(s->flags & SN_ERR_MASK))
5542 s->flags |= SN_ERR_SRVCL;
5543 if (!(s->flags & SN_FINST_MASK)) {
5544 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5545 s->flags |= SN_FINST_H;
5546 else
5547 s->flags |= SN_FINST_D;
5548 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5549 return 0;
5550}
5551
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5552/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5553 * processing can continue on next analysers, or zero if it either needs more
5554 * data or wants to immediately abort the response (eg: timeout, error, ...). It
5555 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
5556 * when it has nothing left to do, and may remove any analyser when it wants to
5557 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5558 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5559int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5560{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5561 struct http_txn *txn = &s->txn;
5562 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5563 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5564 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5565 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5566 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5567
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5568 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]5569 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5570 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5571 rep,
5572 rep->rex, rep->wex,
5573 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5574 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5575 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5576
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5577 /*
5578 * Now parse the partial (or complete) lines.
5579 * We will check the response syntax, and also join multi-line
5580 * headers. An index of all the lines will be elaborated while
5581 * parsing.
5582 *
5583 * For the parsing, we use a 28 states FSM.
5584 *
5585 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5586 * rep->buf->p = beginning of response
5587 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5588 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5589 * msg->eol = end of current header or line (LF or CRLF)
5590 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5591 */
5592
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5593 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5594 /* There's a protected area at the end of the buffer for rewriting
5595 * purposes. We don't want to start to parse the request if the
5596 * protected area is affected, because we may have to move processed
5597 * data later, which is much more complicated.
5598 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5599 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5600 if (unlikely(!channel_reserved(rep))) {
5601 /* some data has still not left the buffer, wake us once that's done */
5602 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5603 goto abort_response;
5604 channel_dont_close(rep);
5605 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5606 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5607 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5608 }
5609
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5610 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5611 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5612 buffer_slow_realign(rep->buf);
5613
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5614 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5615 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5616 }
5617
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5618 /* 1: we might have to print this header in debug mode */
5619 if (unlikely((global.mode & MODE_DEBUG) &&
5620 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau8767b132014-10-21 19:36:09 +0200[diff] [blame]5621 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5622 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5623
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5624 sol = rep->buf->p;
5625 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5626 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5627
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5628 sol += hdr_idx_first_pos(&txn->hdr_idx);
5629 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5630
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5631 while (cur_idx) {
5632 eol = sol + txn->hdr_idx.v[cur_idx].len;
5633 debug_hdr("srvhdr", s, sol, eol);
5634 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5635 cur_idx = txn->hdr_idx.v[cur_idx].next;
5636 }
5637 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5638
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5639 /*
5640 * Now we quickly check if we have found a full valid response.
5641 * If not so, we check the FD and buffer states before leaving.
5642 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5643 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5644 * responses are checked first.
5645 *
5646 * Depending on whether the client is still there or not, we
5647 * may send an error response back or not. Note that normally
5648 * we should only check for HTTP status there, and check I/O
5649 * errors somewhere else.
5650 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5651
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5652 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5653 /* Invalid response */
5654 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5655 /* we detected a parsing error. We want to archive this response
5656 * in the dedicated proxy area for later troubleshooting.
5657 */
5658 hdr_response_bad:
5659 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5660 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]5661
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5662 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5663 if (objt_server(s->target)) {
5664 objt_server(s->target)->counters.failed_resp++;
5665 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5666 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5667 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5668 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5669 rep->analysers = 0;
5670 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5671 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5672 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5673 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5674
5675 if (!(s->flags & SN_ERR_MASK))
5676 s->flags |= SN_ERR_PRXCOND;
5677 if (!(s->flags & SN_FINST_MASK))
5678 s->flags |= SN_FINST_H;
5679
5680 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5681 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5682
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5683 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5684 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5685 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5686 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5687 goto hdr_response_bad;
5688 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5689
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5690 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5691 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5692 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5693 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]5694 else if (txn->flags & TX_NOT_FIRST)
5695 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5696
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5697 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5698 if (objt_server(s->target)) {
5699 objt_server(s->target)->counters.failed_resp++;
5700 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5701 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5702
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5703 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5704 rep->analysers = 0;
5705 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5706 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5707 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5708 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5709
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5710 if (!(s->flags & SN_ERR_MASK))
5711 s->flags |= SN_ERR_SRVCL;
5712 if (!(s->flags & SN_FINST_MASK))
5713 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5714 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5715 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5716
Willy Tarreau2a4f5112014-06-23 15:22:31 +0200[diff] [blame]5717 /* read timeout : return a 504 to the client. */
5718 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5719 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5720 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]5721 else if (txn->flags & TX_NOT_FIRST)
5722 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5723
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5724 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5725 if (objt_server(s->target)) {
5726 objt_server(s->target)->counters.failed_resp++;
5727 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5728 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5729
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5730 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5731 rep->analysers = 0;
5732 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5733 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5734 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5735 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5736
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5737 if (!(s->flags & SN_ERR_MASK))
5738 s->flags |= SN_ERR_SRVTO;
5739 if (!(s->flags & SN_FINST_MASK))
5740 s->flags |= SN_FINST_H;
5741 return 0;
5742 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5743
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5744 /* client abort with an abortonclose */
5745 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5746 s->fe->fe_counters.cli_aborts++;
5747 s->be->be_counters.cli_aborts++;
5748 if (objt_server(s->target))
5749 objt_server(s->target)->counters.cli_aborts++;
5750
5751 rep->analysers = 0;
5752 channel_auto_close(rep);
5753
5754 txn->status = 400;
5755 bi_erase(rep);
5756 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5757
5758 if (!(s->flags & SN_ERR_MASK))
5759 s->flags |= SN_ERR_CLICL;
5760 if (!(s->flags & SN_FINST_MASK))
5761 s->flags |= SN_FINST_H;
5762
5763 /* process_session() will take care of the error */
5764 return 0;
5765 }
5766
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5767 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5768 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5769 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5770 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]5771 else if (txn->flags & TX_NOT_FIRST)
5772 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5773
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5774 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5775 if (objt_server(s->target)) {
5776 objt_server(s->target)->counters.failed_resp++;
5777 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5778 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5779
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5780 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5781 rep->analysers = 0;
5782 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5783 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5784 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5785 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5786
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5787 if (!(s->flags & SN_ERR_MASK))
5788 s->flags |= SN_ERR_SRVCL;
5789 if (!(s->flags & SN_FINST_MASK))
5790 s->flags |= SN_FINST_H;
5791 return 0;
5792 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5793
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5794 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5795 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5796 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5797 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]5798 else if (txn->flags & TX_NOT_FIRST)
5799 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5800
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5801 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5802 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5803 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5804
5805 if (!(s->flags & SN_ERR_MASK))
5806 s->flags |= SN_ERR_CLICL;
5807 if (!(s->flags & SN_FINST_MASK))
5808 s->flags |= SN_FINST_H;
5809
5810 /* process_session() will take care of the error */
5811 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5812 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5813
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5814 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5815 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5816 return 0;
5817 }
5818
5819 /* More interesting part now : we know that we have a complete
5820 * response which at least looks like HTTP. We have an indicator
5821 * of each header's length, so we can parse them quickly.
5822 */
5823
5824 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5825 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]5826
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5827 /*
5828 * 1: get the status code
5829 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5830 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5831 if (n < 1 || n > 5)
5832 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5833 /* when the client triggers a 4xx from the server, it's most often due
5834 * to a missing object or permission. These events should be tracked
5835 * because if they happen often, it may indicate a brute force or a
5836 * vulnerability scan.
5837 */
5838 if (n == 4)
5839 session_inc_http_err_ctr(s);
5840
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5841 if (objt_server(s->target))
5842 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5843
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5844 /* check if the response is HTTP/1.1 or above */
5845 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5846 ((rep->buf->p[5] > '1') ||
5847 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5848 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5849
5850 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5851 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]5852
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5853 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5854 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5855
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5856 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]5857
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5858 /* Adjust server's health based on status code. Note: status codes 501
5859 * and 505 are triggered on demand by client request, so we must not
5860 * count them as server failures.
5861 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5862 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5863 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5864 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5865 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5866 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5867 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5868
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5869 /*
5870 * 2: check for cacheability.
5871 */
5872
5873 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5874 case 100:
5875 /*
5876 * We may be facing a 100-continue response, in which case this
5877 * is not the right response, and we're waiting for the next one.
5878 * Let's allow this response to go to the client and wait for the
5879 * next one.
5880 */
5881 hdr_idx_init(&txn->hdr_idx);
5882 msg->next -= channel_forward(rep, msg->next);
5883 msg->msg_state = HTTP_MSG_RPBEFORE;
5884 txn->status = 0;
5885 s->logs.t_data = -1; /* was not a response yet */
5886 goto next_one;
5887
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5888 case 200:
5889 case 203:
5890 case 206:
5891 case 300:
5892 case 301:
5893 case 410:
5894 /* RFC2616 @13.4:
5895 * "A response received with a status code of
5896 * 200, 203, 206, 300, 301 or 410 MAY be stored
5897 * by a cache (...) unless a cache-control
5898 * directive prohibits caching."
5899 *
5900 * RFC2616 @9.5: POST method :
5901 * "Responses to this method are not cacheable,
5902 * unless the response includes appropriate
5903 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5904 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5905 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5906 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5907 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5908 break;
5909 default:
5910 break;
5911 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5912
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5913 /*
5914 * 3: we may need to capture headers
5915 */
5916 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5917 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5918 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5919 txn->rsp.cap, s->fe->rsp_cap);
5920
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5921 /* 4: determine the transfer-length.
5922 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5923 * the presence of a message-body in a RESPONSE and its transfer length
5924 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5925 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5926 * All responses to the HEAD request method MUST NOT include a
5927 * message-body, even though the presence of entity-header fields
5928 * might lead one to believe they do. All 1xx (informational), 204
5929 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5930 * message-body. All other responses do include a message-body,
5931 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5932 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5933 * 1. Any response which "MUST NOT" include a message-body (such as the
5934 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5935 * always terminated by the first empty line after the header fields,
5936 * regardless of the entity-header fields present in the message.
5937 *
5938 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5939 * the "chunked" transfer-coding (Section 6.2) is used, the
5940 * transfer-length is defined by the use of this transfer-coding.
5941 * If a Transfer-Encoding header field is present and the "chunked"
5942 * transfer-coding is not present, the transfer-length is defined by
5943 * the sender closing the connection.
5944 *
5945 * 3. If a Content-Length header field is present, its decimal value in
5946 * OCTETs represents both the entity-length and the transfer-length.
5947 * If a message is received with both a Transfer-Encoding header
5948 * field and a Content-Length header field, the latter MUST be ignored.
5949 *
5950 * 4. If the message uses the media type "multipart/byteranges", and
5951 * the transfer-length is not otherwise specified, then this self-
5952 * delimiting media type defines the transfer-length. This media
5953 * type MUST NOT be used unless the sender knows that the recipient
5954 * can parse it; the presence in a request of a Range header with
5955 * multiple byte-range specifiers from a 1.1 client implies that the
5956 * client can parse multipart/byteranges responses.
5957 *
5958 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5959 */
5960
5961 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5962 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5963 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5964 * FIXME: should we parse anyway and return an error on chunked encoding ?
5965 */
5966 if (txn->meth == HTTP_METH_HEAD ||
5967 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5968 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5969 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5970 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5971 goto skip_content_length;
5972 }
5973
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5974 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5975 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5976 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5977 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5978 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5979 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5980 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5981 /* bad transfer-encoding (chunked followed by something else) */
5982 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5983 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5984 break;
5985 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5986 }
5987
5988 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5989 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5990 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5991 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5992 signed long long cl;
5993
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5994 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5995 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5996 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5997 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5998
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5999 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6000 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6001 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6002 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6003
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6004 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6005 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6006 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6007 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6008
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6009 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6010 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6011 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6012 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6013
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6014 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6015 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6016 }
6017
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6018 if (s->fe->comp || s->be->comp)
6019 select_compression_response_header(s, rep->buf);
6020
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6021skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6022 /* Now we have to check if we need to modify the Connection header.
6023 * This is more difficult on the response than it is on the request,
6024 * because we can have two different HTTP versions and we don't know
6025 * how the client will interprete a response. For instance, let's say
6026 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6027 * HTTP/1.1 response without any header. Maybe it will bound itself to
6028 * HTTP/1.0 because it only knows about it, and will consider the lack
6029 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6030 * the lack of header as a keep-alive. Thus we will use two flags
6031 * indicating how a request MAY be understood by the client. In case
6032 * of multiple possibilities, we'll fix the header to be explicit. If
6033 * ambiguous cases such as both close and keepalive are seen, then we
6034 * will fall back to explicit close. Note that we won't take risks with
6035 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6036 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6037 */
6038
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6039 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6040 txn->status == 101)) {
6041 /* Either we've established an explicit tunnel, or we're
6042 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6043 * to understand the next protocols. We have to switch to tunnel
6044 * mode, so that we transfer the request and responses then let
6045 * this protocol pass unmodified. When we later implement specific
6046 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6047 * header which contains information about that protocol for
6048 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6049 */
6050 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6051 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6052 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6053 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6054 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6055 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6056 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6057
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6058 /* this situation happens when combining pretend-keepalive with httpclose. */
6059 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6060 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6061 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6062 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6063
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6064 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6065 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6066 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6067 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6068
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6069 /* now adjust header transformations depending on current state */
6070 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6071 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6072 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6073 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6074 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6075 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6076 else { /* SCL / KAL */
6077 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6078 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6079 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6080 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6081
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6082 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6083 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6084
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6085 /* Some keep-alive responses are converted to Server-close if
6086 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6087 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6088 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6089 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6090 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6091 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6092 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6093 }
6094
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6095 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6096 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6097
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6098 /* end of job, return OK */
6099 rep->analysers &= ~an_bit;
6100 rep->analyse_exp = TICK_ETERNITY;
6101 channel_auto_close(rep);
6102 return 1;
6103
6104 abort_keep_alive:
6105 /* A keep-alive request to the server failed on a network error.
6106 * The client is required to retry. We need to close without returning
6107 * any other information so that the client retries.
6108 */
6109 txn->status = 0;
6110 rep->analysers = 0;
6111 s->req->analysers = 0;
6112 channel_auto_close(rep);
6113 s->logs.logwait = 0;
6114 s->logs.level = 0;
6115 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
6116 bi_erase(rep);
6117 stream_int_retnclose(rep->cons, NULL);
6118 return 0;
6119}
6120
6121/* This function performs all the processing enabled for the current response.
6122 * It normally returns 1 unless it wants to break. It relies on buffers flags,
6123 * and updates s->rep->analysers. It might make sense to explode it into several
6124 * other functions. It works like process_request (see indications above).
6125 */
6126int http_process_res_common(struct session *s, struct channel *rep, int an_bit, struct proxy *px)
6127{
6128 struct http_txn *txn = &s->txn;
6129 struct http_msg *msg = &txn->rsp;
6130 struct proxy *cur_proxy;
6131 struct cond_wordlist *wl;
6132 struct http_res_rule *http_res_last_rule = NULL;
6133
6134 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
6135 now_ms, __FUNCTION__,
6136 s,
6137 rep,
6138 rep->rex, rep->wex,
6139 rep->flags,
6140 rep->buf->i,
6141 rep->analysers);
6142
6143 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6144 return 0;
6145
6146 rep->analysers &= ~an_bit;
6147 rep->analyse_exp = TICK_ETERNITY;
6148
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6149 /* The stats applet needs to adjust the Connection header but we don't
6150 * apply any filter there.
6151 */
6152 if (unlikely(objt_applet(s->target) == &http_stats_applet))
6153 goto skip_filters;
6154
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6155 /*
6156 * We will have to evaluate the filters.
6157 * As opposed to version 1.2, now they will be evaluated in the
6158 * filters order and not in the header order. This means that
6159 * each filter has to be validated among all headers.
6160 *
6161 * Filters are tried with ->be first, then with ->fe if it is
6162 * different from ->be.
6163 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6164
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6165 cur_proxy = s->be;
6166 while (1) {
6167 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6168
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6169 /* evaluate http-response rules */
6170 if (!http_res_last_rule)
6171 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]6172
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6173 /* try headers filters */
6174 if (rule_set->rsp_exp != NULL) {
6175 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6176 return_bad_resp:
6177 if (objt_server(s->target)) {
6178 objt_server(s->target)->counters.failed_resp++;
6179 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6180 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6181 s->be->be_counters.failed_resp++;
6182 return_srv_prx_502:
6183 rep->analysers = 0;
6184 txn->status = 502;
6185 s->logs.t_data = -1; /* was not a valid response */
6186 rep->prod->flags |= SI_FL_NOLINGER;
6187 bi_erase(rep);
6188 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
6189 if (!(s->flags & SN_ERR_MASK))
6190 s->flags |= SN_ERR_PRXCOND;
6191 if (!(s->flags & SN_FINST_MASK))
6192 s->flags |= SN_FINST_H;
6193 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6194 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6195 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6196
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6197 /* has the response been denied ? */
6198 if (txn->flags & TX_SVDENY) {
6199 if (objt_server(s->target))
6200 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6201
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6202 s->be->be_counters.denied_resp++;
6203 s->fe->fe_counters.denied_resp++;
6204 if (s->listener->counters)
6205 s->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6206
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6207 goto return_srv_prx_502;
6208 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6209
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6210 /* add response headers from the rule sets in the same order */
6211 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6212 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6213 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6214 if (wl->cond) {
6215 int ret = acl_exec_cond(wl->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
6216 ret = acl_pass(ret);
6217 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6218 ret = !ret;
6219 if (!ret)
6220 continue;
6221 }
6222 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6223 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6224 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6225
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6226 /* check whether we're already working on the frontend */
6227 if (cur_proxy == s->fe)
6228 break;
6229 cur_proxy = s->fe;
6230 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6231
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6232 /* OK that's all we can do for 1xx responses */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6233 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6234 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6235
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6236 /*
6237 * Now check for a server cookie.
6238 */
6239 if (s->be->cookie_name || s->be->appsession_name || s->fe->capture_name ||
6240 (s->be->options & PR_O_CHK_CACHE))
6241 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6242
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6243 /*
6244 * Check for cache-control or pragma headers if required.
6245 */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6246 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]6247 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6248
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6249 /*
6250 * Add server cookie in the response if needed
6251 */
6252 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6253 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
6254 (!(s->flags & SN_DIRECT) ||
6255 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6256 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6257 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6258 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6259 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
6260 !(s->flags & SN_IGNORE_PRST)) {
6261 /* the server is known, it's not the one the client requested, or the
6262 * cookie's last seen date needs to be refreshed. We have to
6263 * insert a set-cookie here, except if we want to insert only on POST
6264 * requests and this one isn't. Note that servers which don't have cookies
6265 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6266 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6267 if (!objt_server(s->target)->cookie) {
6268 chunk_printf(&trash,
6269 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6270 s->be->cookie_name);
6271 }
6272 else {
6273 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]6274
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6275 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6276 /* emit last_date, which is mandatory */
6277 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6278 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6279 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6280
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6281 if (s->be->cookie_maxlife) {
6282 /* emit first_date, which is either the original one or
6283 * the current date.
6284 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6285 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6286 s30tob64(txn->cookie_first_date ?
6287 txn->cookie_first_date >> 2 :
6288 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6289 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6290 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6291 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6292 chunk_appendf(&trash, "; path=/");
6293 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6294
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6295 if (s->be->cookie_domain)
6296 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6297
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6298 if (s->be->ck_opts & PR_CK_HTTPONLY)
6299 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6300
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6301 if (s->be->ck_opts & PR_CK_SECURE)
6302 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6303
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6304 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6305 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6306
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6307 txn->flags &= ~TX_SCK_MASK;
6308 if (objt_server(s->target)->cookie && (s->flags & SN_DIRECT))
6309 /* the server did not change, only the date was updated */
6310 txn->flags |= TX_SCK_UPDATED;
6311 else
6312 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6313
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6314 /* Here, we will tell an eventual cache on the client side that we don't
6315 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6316 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6317 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6318 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6319 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6320
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6321 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6322
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6323 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6324 "Cache-control: private", 22) < 0))
6325 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6326 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6327 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6328
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6329 /*
6330 * Check if result will be cacheable with a cookie.
6331 * We'll block the response if security checks have caught
6332 * nasty things such as a cacheable cookie.
6333 */
6334 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6335 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6336 (s->be->options & PR_O_CHK_CACHE)) {
6337 /* we're in presence of a cacheable response containing
6338 * a set-cookie header. We'll block it as requested by
6339 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6340 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6341 if (objt_server(s->target))
6342 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6343
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6344 s->be->be_counters.denied_resp++;
6345 s->fe->fe_counters.denied_resp++;
6346 if (s->listener->counters)
6347 s->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6348
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6349 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6350 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6351 send_log(s->be, LOG_ALERT,
6352 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6353 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6354 goto return_srv_prx_502;
6355 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6356
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6357 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6358 /*
6359 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6360 * If an "Upgrade" token is found, the header is left untouched in order
6361 * 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]6362 * if anything but "Upgrade" is present in the Connection header. We don't
6363 * want to touch any 101 response either since it's switching to another
6364 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6365 */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6366 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6367 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
6368 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6369 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6370 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6371
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6372 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6373 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6374 /* we want a keep-alive response here. Keep-alive header
6375 * required if either side is not 1.1.
6376 */
6377 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6378 want_flags |= TX_CON_KAL_SET;
6379 }
6380 else {
6381 /* we want a close response here. Close header required if
6382 * the server is 1.1, regardless of the client.
6383 */
6384 if (msg->flags & HTTP_MSGF_VER_11)
6385 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6386 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6387
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6388 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6389 http_change_connection_header(txn, msg, want_flags);
6390 }
6391
6392 skip_header_mangling:
6393 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
6394 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
6395 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6396
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6397 /* if the user wants to log as soon as possible, without counting
6398 * bytes from the server, then this is the right moment. We have
6399 * to temporarily assign bytes_out to log what we currently have.
6400 */
6401 if (!LIST_ISEMPTY(&s->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
6402 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6403 s->logs.bytes_out = txn->rsp.eoh;
6404 s->do_log(s);
6405 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6406 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6407 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6408}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6409
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6410/* This function is an analyser which forwards response body (including chunk
6411 * sizes if any). It is called as soon as we must forward, even if we forward
6412 * zero byte. The only situation where it must not be called is when we're in
6413 * tunnel mode and we want to forward till the close. It's used both to forward
6414 * remaining data and to resync after end of body. It expects the msg_state to
6415 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
6416 * 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]6417 *
6418 * It is capable of compressing response data both in content-length mode and
6419 * in chunked mode. The state machines follows different flows depending on
6420 * whether content-length and chunked modes are used, since there are no
6421 * trailers in content-length :
6422 *
6423 * chk-mode cl-mode
6424 * ,----- BODY -----.
6425 * / \
6426 * V size > 0 V chk-mode
6427 * .--> SIZE -------------> DATA -------------> CRLF
6428 * | | size == 0 | last byte |
6429 * | v final crlf v inspected |
6430 * | TRAILERS -----------> DONE |
6431 * | |
6432 * `----------------------------------------------'
6433 *
6434 * Compression only happens in the DATA state, and must be flushed in final
6435 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6436 * is performed at once on final states for all bytes parsed, or when leaving
6437 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6438 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6439int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6440{
6441 struct http_txn *txn = &s->txn;
6442 struct http_msg *msg = &s->txn.rsp;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6443 static struct buffer *tmpbuf = NULL;
6444 int compressing = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6445 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6446
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6447 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6448 return 0;
6449
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6450 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]6451 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]6452 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6453 /* Output closed while we were sending data. We must abort and
6454 * wake the other side up.
6455 */
6456 msg->msg_state = HTTP_MSG_ERROR;
6457 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6458 return 1;
6459 }
6460
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6461 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6462 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6463
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]6464 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6465 /* we have msg->sov which points to the first byte of message
6466 * body, and res->buf.p still points to the beginning of the
6467 * message. We forward the headers now, as we don't need them
6468 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6469 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6470 b_adv(res->buf, msg->sov);
6471 msg->next -= msg->sov;
6472 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6473
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6474 /* The previous analysers guarantee that the state is somewhere
6475 * between MSG_BODY and the first MSG_DATA. So msg->sol and
6476 * msg->next are always correct.
6477 */
6478 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
6479 if (msg->flags & HTTP_MSGF_TE_CHNK)
6480 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6481 else
6482 msg->msg_state = HTTP_MSG_DATA;
6483 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6484 }
6485
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6486 if (res->to_forward) {
6487 /* We can't process the buffer's contents yet */
6488 res->flags |= CF_WAKE_WRITE;
6489 goto missing_data;
6490 }
6491
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6492 if (unlikely(s->comp_algo != NULL) && msg->msg_state < HTTP_MSG_TRAILERS) {
6493 /* We need a compression buffer in the DATA state to put the
6494 * output of compressed data, and in CRLF state to let the
6495 * TRAILERS state finish the job of removing the trailing CRLF.
6496 */
6497 if (unlikely(tmpbuf == NULL)) {
6498 /* this is the first time we need the compression buffer */
6499 tmpbuf = pool_alloc2(pool2_buffer);
6500 if (tmpbuf == NULL)
6501 goto aborted_xfer; /* no memory */
6502 }
6503
6504 ret = http_compression_buffer_init(s, res->buf, tmpbuf);
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6505 if (ret < 0) {
6506 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6507 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6508 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6509 compressing = 1;
6510 }
6511
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6512 while (1) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6513 switch (msg->msg_state - HTTP_MSG_DATA) {
6514 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6515 /* we may have some pending data starting at res->buf->p */
6516 if (unlikely(s->comp_algo)) {
Willy Tarreau7f2f8d52014-04-18 00:20:14 +0200[diff] [blame]6517 ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6518 if (ret < 0)
6519 goto aborted_xfer;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6520
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6521 if (msg->chunk_len) {
6522 /* input empty or output full */
6523 if (res->buf->i > msg->next)
6524 res->flags |= CF_WAKE_WRITE;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6525 goto missing_data;
6526 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6527 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6528 else {
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6529 if (msg->chunk_len > res->buf->i - msg->next) {
6530 /* output full */
6531 res->flags |= CF_WAKE_WRITE;
6532 goto missing_data;
6533 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6534 msg->next += msg->chunk_len;
6535 msg->chunk_len = 0;
6536 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6537
6538 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6539 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6540 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6541 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6542 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6543 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6544 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6545 /* fall through for HTTP_MSG_CHUNK_CRLF */
6546
6547 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6548 /* we want the CRLF after the data */
6549
6550 ret = http_skip_chunk_crlf(msg);
6551 if (ret == 0)
6552 goto missing_data;
6553 else if (ret < 0) {
6554 if (msg->err_pos >= 0)
6555 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
6556 goto return_bad_res;
6557 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6558 /* we're in MSG_CHUNK_SIZE now, fall through */
6559
6560 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6561 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6562 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6563 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6564 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6565
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6566 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6567 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6568 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6569 else if (ret < 0) {
6570 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6571 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]6572 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6573 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6574 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6575 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6576
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6577 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6578 if (unlikely(compressing)) {
6579 /* we need to flush output contents before syncing FSMs */
6580 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6581 compressing = 0;
6582 }
6583
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6584 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6585 if (ret == 0)
6586 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6587 else if (ret < 0) {
6588 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6589 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]6590 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6591 }
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6592 /* we're in HTTP_MSG_DONE now, fall through */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6593
6594 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6595 /* other states, DONE...TUNNEL */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6596 if (unlikely(compressing)) {
6597 /* we need to flush output contents before syncing FSMs */
6598 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6599 compressing = 0;
6600 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6601
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6602 /* we may have some pending data starting at res->buf->p
6603 * such as a last chunk of data or trailers.
6604 */
6605 b_adv(res->buf, msg->next);
6606 msg->next = 0;
6607
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6608 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6609 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6610 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6611 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6612 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6613
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6614 if (http_resync_states(s)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6615 /* some state changes occurred, maybe the analyser
6616 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6617 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6618 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6619 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6620 /* response errors are most likely due to
6621 * the client aborting the transfer.
6622 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6623 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6624 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6625 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6626 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6627 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6628 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6629 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6630 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6631 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6632 }
6633 }
6634
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6635 missing_data:
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6636 /* we may have some pending data starting at res->buf->p */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6637 if (unlikely(compressing)) {
6638 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6639 compressing = 0;
6640 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6641
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6642 if ((s->comp_algo == NULL || msg->msg_state >= HTTP_MSG_TRAILERS)) {
6643 b_adv(res->buf, msg->next);
6644 msg->next = 0;
6645 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6646 }
6647
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6648 if (res->flags & CF_SHUTW)
6649 goto aborted_xfer;
6650
6651 /* stop waiting for data if the input is closed before the end. If the
6652 * client side was already closed, it means that the client has aborted,
6653 * so we don't want to count this as a server abort. Otherwise it's a
6654 * server abort.
6655 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6656 if (res->flags & CF_SHUTR) {
Willy Tarreaub2c6a782014-04-23 20:29:01 +0200[diff] [blame]6657 if ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6658 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6659 if (!(s->flags & SN_ERR_MASK))
6660 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6661 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6662 if (objt_server(s->target))
6663 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6664 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6665 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6666
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6667 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6668 if (!s->req->analysers)
6669 goto return_bad_res;
6670
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6671 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6672 * 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]6673 * Similarly, with keep-alive on the client side, we don't want to forward a
6674 * close.
6675 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6676 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6677 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6678 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6679 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6680
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6681 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6682 * 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]6683 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6684 * modes are already handled by the stream sock layer. We must not do
6685 * this in content-length mode because it could present the MSG_MORE
6686 * flag with the last block of forwarded data, which would cause an
6687 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6688 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6689 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6690 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6691
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6692 /* the session handler will take care of timeouts and errors */
6693 return 0;
6694
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6695 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6696 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6697 if (objt_server(s->target))
6698 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6699
6700 return_bad_res_stats_ok:
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]6701 if (unlikely(compressing)) {
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6702 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]6703 compressing = 0;
6704 }
6705
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6706 /* we may have some pending data starting at res->buf->p */
6707 if (s->comp_algo == NULL) {
6708 b_adv(res->buf, msg->next);
6709 msg->next = 0;
6710 }
6711
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6712 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6713 /* don't send any error message as we're in the body */
6714 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6715 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6716 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]6717 if (objt_server(s->target))
6718 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6719
6720 if (!(s->flags & SN_ERR_MASK))
6721 s->flags |= SN_ERR_PRXCOND;
6722 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6723 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6724 return 0;
6725
6726 aborted_xfer:
Willy Tarreau6fef8ae2014-04-22 21:22:06 +0200[diff] [blame]6727 if (unlikely(compressing)) {
6728 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
6729 compressing = 0;
6730 }
6731
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6732 txn->rsp.msg_state = HTTP_MSG_ERROR;
6733 /* don't send any error message as we're in the body */
6734 stream_int_retnclose(res->cons, NULL);
6735 res->analysers = 0;
6736 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6737
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6738 s->fe->fe_counters.cli_aborts++;
6739 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6740 if (objt_server(s->target))
6741 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6742
6743 if (!(s->flags & SN_ERR_MASK))
6744 s->flags |= SN_ERR_CLICL;
6745 if (!(s->flags & SN_FINST_MASK))
6746 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6747 return 0;
6748}
6749
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6750/* Iterate the same filter through all request headers.
6751 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6752 * Since it can manage the switch to another backend, it updates the per-proxy
6753 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6754 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6755int 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]6756{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6757 char *cur_ptr, *cur_end, *cur_next;
6758 int cur_idx, old_idx, last_hdr;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6759 struct http_txn *txn = &s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6760 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6761 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6762
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6763 last_hdr = 0;
6764
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6765 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6766 old_idx = 0;
6767
6768 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6769 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6770 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6771 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6772 (exp->action == ACT_ALLOW ||
6773 exp->action == ACT_DENY ||
6774 exp->action == ACT_TARPIT))
6775 return 0;
6776
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6777 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6778 if (!cur_idx)
6779 break;
6780
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6781 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6782 cur_ptr = cur_next;
6783 cur_end = cur_ptr + cur_hdr->len;
6784 cur_next = cur_end + cur_hdr->cr + 1;
6785
6786 /* Now we have one header between cur_ptr and cur_end,
6787 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6788 */
6789
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]6790 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]6791 switch (exp->action) {
6792 case ACT_SETBE:
6793 /* It is not possible to jump a second time.
6794 * FIXME: should we return an HTTP/500 here so that
6795 * the admin knows there's a problem ?
6796 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6797 if (s->be != s->fe)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6798 break;
6799
6800 /* Swithing Proxy */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6801 session_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6802 last_hdr = 1;
6803 break;
6804
6805 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6806 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6807 last_hdr = 1;
6808 break;
6809
6810 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6811 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6812 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6813 break;
6814
6815 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6816 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6817 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6818 break;
6819
6820 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]6821 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
6822 if (trash.len < 0)
6823 return -1;
6824
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6825 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6826 /* FIXME: if the user adds a newline in the replacement, the
6827 * index will not be recalculated for now, and the new line
6828 * will not be counted as a new header.
6829 */
6830
6831 cur_end += delta;
6832 cur_next += delta;
6833 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6834 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6835 break;
6836
6837 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6838 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6839 cur_next += delta;
6840
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6841 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6842 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6843 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6844 cur_hdr->len = 0;
6845 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6846 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6847 break;
6848
6849 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6850 }
6851
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6852 /* keep the link from this header to next one in case of later
6853 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6854 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6855 old_idx = cur_idx;
6856 }
6857 return 0;
6858}
6859
6860
6861/* Apply the filter to the request line.
6862 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6863 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6864 * Since it can manage the switch to another backend, it updates the per-proxy
6865 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6866 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6867int 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]6868{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6869 char *cur_ptr, *cur_end;
6870 int done;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6871 struct http_txn *txn = &s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6872 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6873
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6874 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6875 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6876 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6877 (exp->action == ACT_ALLOW ||
6878 exp->action == ACT_DENY ||
6879 exp->action == ACT_TARPIT))
6880 return 0;
6881 else if (exp->action == ACT_REMOVE)
6882 return 0;
6883
6884 done = 0;
6885
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6886 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6887 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6888
6889 /* Now we have the request line between cur_ptr and cur_end */
6890
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]6891 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]6892 switch (exp->action) {
6893 case ACT_SETBE:
6894 /* It is not possible to jump a second time.
6895 * FIXME: should we return an HTTP/500 here so that
6896 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6897 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6898 if (s->be != s->fe)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6899 break;
6900
6901 /* Swithing Proxy */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6902 session_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6903 done = 1;
6904 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6905
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6906 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6907 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6908 done = 1;
6909 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6910
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6911 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6912 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6913 done = 1;
6914 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6915
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6916 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6917 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6918 done = 1;
6919 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6920
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6921 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]6922 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
6923 if (trash.len < 0)
6924 return -1;
6925
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6926 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6927 /* FIXME: if the user adds a newline in the replacement, the
6928 * index will not be recalculated for now, and the new line
6929 * will not be counted as a new header.
6930 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6931
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6932 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6933 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6934 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6935 HTTP_MSG_RQMETH,
6936 cur_ptr, cur_end + 1,
6937 NULL, NULL);
6938 if (unlikely(!cur_end))
6939 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6940
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6941 /* we have a full request and we know that we have either a CR
6942 * or an LF at <ptr>.
6943 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6944 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6945 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]6946 /* there is no point trying this regex on headers */
6947 return 1;
6948 }
6949 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6950 return done;
6951}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6952
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6953
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6954
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6955/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6956 * 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]6957 * 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]6958 * unparsable request. Since it can manage the switch to another backend, it
6959 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6960 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6961int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6962{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6963 struct http_txn *txn = &s->txn;
6964 struct hdr_exp *exp;
6965
6966 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6967 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6968
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6969 /*
6970 * The interleaving of transformations and verdicts
6971 * makes it difficult to decide to continue or stop
6972 * the evaluation.
6973 */
6974
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6975 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6976 break;
6977
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6978 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6979 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6980 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6981 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6982
6983 /* if this filter had a condition, evaluate it now and skip to
6984 * next filter if the condition does not match.
6985 */
6986 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6987 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]6988 ret = acl_pass(ret);
6989 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6990 ret = !ret;
6991
6992 if (!ret)
6993 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6994 }
6995
6996 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6997 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6998 if (unlikely(ret < 0))
6999 return -1;
7000
7001 if (likely(ret == 0)) {
7002 /* The filter did not match the request, it can be
7003 * iterated through all headers.
7004 */
Willy Tarreaua256fae2015-01-30 20:58:58 +0100[diff] [blame]7005 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7006 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7007 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7008 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7009 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7010}
7011
7012
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7013
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7014/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7015 * Try to retrieve the server associated to the appsession.
7016 * If the server is found, it's assigned to the session.
7017 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7018void manage_client_side_appsession(struct session *s, const char *buf, int len) {
7019 struct http_txn *txn = &s->txn;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7020 appsess *asession = NULL;
7021 char *sessid_temp = NULL;
7022
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7023 if (len > s->be->appsession_len) {
7024 len = s->be->appsession_len;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7025 }
7026
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7027 if (s->be->options2 & PR_O2_AS_REQL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7028 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7029 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7030 /* 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]7031 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7032 }
7033
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7034 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7035 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7036 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]7037 return;
7038 }
7039
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7040 memcpy(txn->sessid, buf, len);
7041 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7042 }
7043
7044 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
7045 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7046 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]7047 return;
7048 }
7049
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7050 memcpy(sessid_temp, buf, len);
7051 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7052
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7053 asession = appsession_hash_lookup(&(s->be->htbl_proxy), sessid_temp);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7054 /* free previously allocated memory */
7055 pool_free2(apools.sessid, sessid_temp);
7056
7057 if (asession != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7058 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
7059 if (!(s->be->options2 & PR_O2_AS_REQL))
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7060 asession->request_count++;
7061
7062 if (asession->serverid != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7063 struct server *srv = s->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7064
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7065 while (srv) {
7066 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7067 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7068 (s->be->options & PR_O_PERSIST) ||
7069 (s->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7070 /* we found the server and it's usable */
7071 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7072 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7073 s->flags |= SN_DIRECT | SN_ASSIGNED;
7074 s->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]7075
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7076 break;
7077 } else {
7078 txn->flags &= ~TX_CK_MASK;
7079 txn->flags |= TX_CK_DOWN;
7080 }
7081 }
7082 srv = srv->next;
7083 }
7084 }
7085 }
7086}
7087
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7088/* Find the end of a cookie value contained between <s> and <e>. It works the
7089 * same way as with headers above except that the semi-colon also ends a token.
7090 * See RFC2965 for more information. Note that it requires a valid header to
7091 * return a valid result.
7092 */
7093char *find_cookie_value_end(char *s, const char *e)
7094{
7095 int quoted, qdpair;
7096
7097 quoted = qdpair = 0;
7098 for (; s < e; s++) {
7099 if (qdpair) qdpair = 0;
7100 else if (quoted) {
7101 if (*s == '\\') qdpair = 1;
7102 else if (*s == '"') quoted = 0;
7103 }
7104 else if (*s == '"') quoted = 1;
7105 else if (*s == ',' || *s == ';') return s;
7106 }
7107 return s;
7108}
7109
7110/* Delete a value in a header between delimiters <from> and <next> in buffer
7111 * <buf>. The number of characters displaced is returned, and the pointer to
7112 * the first delimiter is updated if required. The function tries as much as
7113 * possible to respect the following principles :
7114 * - replace <from> delimiter by the <next> one unless <from> points to a
7115 * colon, in which case <next> is simply removed
7116 * - set exactly one space character after the new first delimiter, unless
7117 * there are not enough characters in the block being moved to do so.
7118 * - remove unneeded spaces before the previous delimiter and after the new
7119 * one.
7120 *
7121 * It is the caller's responsibility to ensure that :
7122 * - <from> points to a valid delimiter or the colon ;
7123 * - <next> points to a valid delimiter or the final CR/LF ;
7124 * - there are non-space chars before <from> ;
7125 * - there is a CR/LF at or after <next>.
7126 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7127int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7128{
7129 char *prev = *from;
7130
7131 if (*prev == ':') {
7132 /* We're removing the first value, preserve the colon and add a
7133 * space if possible.
7134 */
7135 if (!http_is_crlf[(unsigned char)*next])
7136 next++;
7137 prev++;
7138 if (prev < next)
7139 *prev++ = ' ';
7140
7141 while (http_is_spht[(unsigned char)*next])
7142 next++;
7143 } else {
7144 /* Remove useless spaces before the old delimiter. */
7145 while (http_is_spht[(unsigned char)*(prev-1)])
7146 prev--;
7147 *from = prev;
7148
7149 /* copy the delimiter and if possible a space if we're
7150 * not at the end of the line.
7151 */
7152 if (!http_is_crlf[(unsigned char)*next]) {
7153 *prev++ = *next++;
7154 if (prev + 1 < next)
7155 *prev++ = ' ';
7156 while (http_is_spht[(unsigned char)*next])
7157 next++;
7158 }
7159 }
7160 return buffer_replace2(buf, prev, next, NULL, 0);
7161}
7162
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7163/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7164 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7165 * desirable to call it only when needed. This code is quite complex because
7166 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7167 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7168 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7169void manage_client_side_cookies(struct session *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7170{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7171 struct http_txn *txn = &s->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7172 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7173 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7174 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7175 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7176
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7177 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7178 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7179 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7180
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7181 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7182 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7183 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7184
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7185 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7186 hdr_beg = hdr_next;
7187 hdr_end = hdr_beg + cur_hdr->len;
7188 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7189
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7190 /* We have one full header between hdr_beg and hdr_end, and the
7191 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7192 * "Cookie:" headers.
7193 */
7194
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7195 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7196 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7197 old_idx = cur_idx;
7198 continue;
7199 }
7200
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7201 del_from = NULL; /* nothing to be deleted */
7202 preserve_hdr = 0; /* assume we may kill the whole header */
7203
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7204 /* Now look for cookies. Conforming to RFC2109, we have to support
7205 * attributes whose name begin with a '$', and associate them with
7206 * the right cookie, if we want to delete this cookie.
7207 * So there are 3 cases for each cookie read :
7208 * 1) it's a special attribute, beginning with a '$' : ignore it.
7209 * 2) it's a server id cookie that we *MAY* want to delete : save
7210 * some pointers on it (last semi-colon, beginning of cookie...)
7211 * 3) it's an application cookie : we *MAY* have to delete a previous
7212 * "special" cookie.
7213 * At the end of loop, if a "special" cookie remains, we may have to
7214 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7215 * *MUST* delete it.
7216 *
7217 * Note: RFC2965 is unclear about the processing of spaces around
7218 * the equal sign in the ATTR=VALUE form. A careful inspection of
7219 * the RFC explicitly allows spaces before it, and not within the
7220 * tokens (attrs or values). An inspection of RFC2109 allows that
7221 * too but section 10.1.3 lets one think that spaces may be allowed
7222 * after the equal sign too, resulting in some (rare) buggy
7223 * implementations trying to do that. So let's do what servers do.
7224 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7225 * allowed quoted strings in values, with any possible character
7226 * after a backslash, including control chars and delimitors, which
7227 * causes parsing to become ambiguous. Browsers also allow spaces
7228 * within values even without quotes.
7229 *
7230 * We have to keep multiple pointers in order to support cookie
7231 * removal at the beginning, middle or end of header without
7232 * corrupting the header. All of these headers are valid :
7233 *
7234 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7235 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7236 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7237 * | | | | | | | | |
7238 * | | | | | | | | hdr_end <--+
7239 * | | | | | | | +--> next
7240 * | | | | | | +----> val_end
7241 * | | | | | +-----------> val_beg
7242 * | | | | +--------------> equal
7243 * | | | +----------------> att_end
7244 * | | +---------------------> att_beg
7245 * | +--------------------------> prev
7246 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7247 */
7248
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7249 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7250 /* Iterate through all cookies on this line */
7251
7252 /* find att_beg */
7253 att_beg = prev + 1;
7254 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7255 att_beg++;
7256
7257 /* find att_end : this is the first character after the last non
7258 * space before the equal. It may be equal to hdr_end.
7259 */
7260 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7261
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7262 while (equal < hdr_end) {
7263 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7264 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7265 if (http_is_spht[(unsigned char)*equal++])
7266 continue;
7267 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7268 }
7269
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7270 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7271 * is between <att_beg> and <equal>, both may be identical.
7272 */
7273
7274 /* look for end of cookie if there is an equal sign */
7275 if (equal < hdr_end && *equal == '=') {
7276 /* look for the beginning of the value */
7277 val_beg = equal + 1;
7278 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7279 val_beg++;
7280
7281 /* find the end of the value, respecting quotes */
7282 next = find_cookie_value_end(val_beg, hdr_end);
7283
7284 /* make val_end point to the first white space or delimitor after the value */
7285 val_end = next;
7286 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7287 val_end--;
7288 } else {
7289 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7290 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7291
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7292 /* We have nothing to do with attributes beginning with '$'. However,
7293 * they will automatically be removed if a header before them is removed,
7294 * since they're supposed to be linked together.
7295 */
7296 if (*att_beg == '$')
7297 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7298
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7299 /* Ignore cookies with no equal sign */
7300 if (equal == next) {
7301 /* This is not our cookie, so we must preserve it. But if we already
7302 * scheduled another cookie for removal, we cannot remove the
7303 * complete header, but we can remove the previous block itself.
7304 */
7305 preserve_hdr = 1;
7306 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7307 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7308 val_end += delta;
7309 next += delta;
7310 hdr_end += delta;
7311 hdr_next += delta;
7312 cur_hdr->len += delta;
7313 http_msg_move_end(&txn->req, delta);
7314 prev = del_from;
7315 del_from = NULL;
7316 }
7317 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7318 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7319
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7320 /* if there are spaces around the equal sign, we need to
7321 * strip them otherwise we'll get trouble for cookie captures,
7322 * or even for rewrites. Since this happens extremely rarely,
7323 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7324 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7325 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7326 int stripped_before = 0;
7327 int stripped_after = 0;
7328
7329 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7330 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7331 equal += stripped_before;
7332 val_beg += stripped_before;
7333 }
7334
7335 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7336 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7337 val_beg += stripped_after;
7338 stripped_before += stripped_after;
7339 }
7340
7341 val_end += stripped_before;
7342 next += stripped_before;
7343 hdr_end += stripped_before;
7344 hdr_next += stripped_before;
7345 cur_hdr->len += stripped_before;
7346 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7347 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7348 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7349
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7350 /* First, let's see if we want to capture this cookie. We check
7351 * that we don't already have a client side cookie, because we
7352 * can only capture one. Also as an optimisation, we ignore
7353 * cookies shorter than the declared name.
7354 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7355 if (s->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7356 (val_end - att_beg >= s->fe->capture_namelen) &&
7357 memcmp(att_beg, s->fe->capture_name, s->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7358 int log_len = val_end - att_beg;
7359
7360 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7361 Alert("HTTP logging : out of memory.\n");
7362 } else {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7363 if (log_len > s->fe->capture_len)
7364 log_len = s->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7365 memcpy(txn->cli_cookie, att_beg, log_len);
7366 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7367 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7368 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7369
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7370 /* Persistence cookies in passive, rewrite or insert mode have the
7371 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7372 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7373 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7374 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7375 * For cookies in prefix mode, the form is :
7376 *
7377 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7378 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7379 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7380 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7381 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7382 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7383
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7384 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7385 * have the server ID between val_beg and delim, and the original cookie between
7386 * delim+1 and val_end. Otherwise, delim==val_end :
7387 *
7388 * Cookie: NAME=SRV; # in all but prefix modes
7389 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7390 * | || || | |+-> next
7391 * | || || | +--> val_end
7392 * | || || +---------> delim
7393 * | || |+------------> val_beg
7394 * | || +-------------> att_end = equal
7395 * | |+-----------------> att_beg
7396 * | +------------------> prev
7397 * +-------------------------> hdr_beg
7398 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7399
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7400 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7401 for (delim = val_beg; delim < val_end; delim++)
7402 if (*delim == COOKIE_DELIM)
7403 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7404 } else {
7405 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7406 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7407 /* Now check if the cookie contains a date field, which would
7408 * appear after a vertical bar ('|') just after the server name
7409 * and before the delimiter.
7410 */
7411 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7412 if (vbar1) {
7413 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7414 * right is the last seen date. It is a base64 encoded
7415 * 30-bit value representing the UNIX date since the
7416 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7417 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7418 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7419 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7420 if (val_end - vbar1 >= 5) {
7421 val = b64tos30(vbar1);
7422 if (val > 0)
7423 txn->cookie_last_date = val << 2;
7424 }
7425 /* look for a second vertical bar */
7426 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7427 if (vbar1 && (val_end - vbar1 > 5)) {
7428 val = b64tos30(vbar1 + 1);
7429 if (val > 0)
7430 txn->cookie_first_date = val << 2;
7431 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7432 }
7433 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7434
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7435 /* if the cookie has an expiration date and the proxy wants to check
7436 * it, then we do that now. We first check if the cookie is too old,
7437 * then only if it has expired. We detect strict overflow because the
7438 * time resolution here is not great (4 seconds). Cookies with dates
7439 * in the future are ignored if their offset is beyond one day. This
7440 * allows an admin to fix timezone issues without expiring everyone
7441 * and at the same time avoids keeping unwanted side effects for too
7442 * long.
7443 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7444 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7445 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7446 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7447 txn->flags &= ~TX_CK_MASK;
7448 txn->flags |= TX_CK_OLD;
7449 delim = val_beg; // let's pretend we have not found the cookie
7450 txn->cookie_first_date = 0;
7451 txn->cookie_last_date = 0;
7452 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7453 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7454 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7455 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7456 txn->flags &= ~TX_CK_MASK;
7457 txn->flags |= TX_CK_EXPIRED;
7458 delim = val_beg; // let's pretend we have not found the cookie
7459 txn->cookie_first_date = 0;
7460 txn->cookie_last_date = 0;
7461 }
7462
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7463 /* Here, we'll look for the first running server which supports the cookie.
7464 * This allows to share a same cookie between several servers, for example
7465 * to dedicate backup servers to specific servers only.
7466 * However, to prevent clients from sticking to cookie-less backup server
7467 * when they have incidentely learned an empty cookie, we simply ignore
7468 * empty cookies and mark them as invalid.
7469 * The same behaviour is applied when persistence must be ignored.
7470 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7471 if ((delim == val_beg) || (s->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7472 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7473
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7474 while (srv) {
7475 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7476 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7477 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7478 (s->be->options & PR_O_PERSIST) ||
7479 (s->flags & SN_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7480 /* we found the server and we can use it */
7481 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7482 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7483 s->flags |= SN_DIRECT | SN_ASSIGNED;
7484 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7485 break;
7486 } else {
7487 /* we found a server, but it's down,
7488 * mark it as such and go on in case
7489 * another one is available.
7490 */
7491 txn->flags &= ~TX_CK_MASK;
7492 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7493 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7494 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7495 srv = srv->next;
7496 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7497
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7498 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7499 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7500 txn->flags &= ~TX_CK_MASK;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7501 if ((s->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7502 txn->flags |= TX_CK_UNUSED;
7503 else
7504 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7505 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7506
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7507 /* depending on the cookie mode, we may have to either :
7508 * - delete the complete cookie if we're in insert+indirect mode, so that
7509 * the server never sees it ;
7510 * - remove the server id from the cookie value, and tag the cookie as an
7511 * application cookie so that it does not get accidentely removed later,
7512 * if we're in cookie prefix mode
7513 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7514 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7515 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7516
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7517 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7518 val_end += delta;
7519 next += delta;
7520 hdr_end += delta;
7521 hdr_next += delta;
7522 cur_hdr->len += delta;
7523 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7524
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7525 del_from = NULL;
7526 preserve_hdr = 1; /* we want to keep this cookie */
7527 }
7528 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7529 (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]7530 del_from = prev;
7531 }
7532 } else {
7533 /* This is not our cookie, so we must preserve it. But if we already
7534 * scheduled another cookie for removal, we cannot remove the
7535 * complete header, but we can remove the previous block itself.
7536 */
7537 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7538
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7539 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7540 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7541 if (att_beg >= del_from)
7542 att_beg += delta;
7543 if (att_end >= del_from)
7544 att_end += delta;
7545 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7546 val_end += delta;
7547 next += delta;
7548 hdr_end += delta;
7549 hdr_next += delta;
7550 cur_hdr->len += delta;
7551 http_msg_move_end(&txn->req, delta);
7552 prev = del_from;
7553 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7554 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7555 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7556
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7557 /* Look for the appsession cookie unless persistence must be ignored */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7558 if (!(s->flags & SN_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7559 int cmp_len, value_len;
7560 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7561
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7562 if (s->be->options2 & PR_O2_AS_PFX) {
7563 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
7564 value_begin = att_beg + s->be->appsession_name_len;
7565 value_len = val_end - att_beg - s->be->appsession_name_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7566 } else {
7567 cmp_len = att_end - att_beg;
7568 value_begin = val_beg;
7569 value_len = val_end - val_beg;
7570 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7571
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7572 /* let's see if the cookie is our appcookie */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7573 if (cmp_len == s->be->appsession_name_len &&
7574 memcmp(att_beg, s->be->appsession_name, cmp_len) == 0) {
7575 manage_client_side_appsession(s, value_begin, value_len);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7576 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7577 }
7578
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7579 /* continue with next cookie on this header line */
7580 att_beg = next;
7581 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7582
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7583 /* There are no more cookies on this line.
7584 * We may still have one (or several) marked for deletion at the
7585 * end of the line. We must do this now in two ways :
7586 * - if some cookies must be preserved, we only delete from the
7587 * mark to the end of line ;
7588 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7589 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7590 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7591 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7592 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7593 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7594 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7595 cur_hdr->len += delta;
7596 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7597 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7598
7599 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7600 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7601 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7602 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7603 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7604 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7605 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7606 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7607 }
7608
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7609 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7610 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7611 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7612}
7613
7614
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7615/* Iterate the same filter through all response headers contained in <rtr>.
7616 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7617 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7618int 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]7619{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7620 char *cur_ptr, *cur_end, *cur_next;
7621 int cur_idx, old_idx, last_hdr;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7622 struct http_txn *txn = &s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7623 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7624 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7625
7626 last_hdr = 0;
7627
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7628 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7629 old_idx = 0;
7630
7631 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7632 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7633 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7634 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7635 (exp->action == ACT_ALLOW ||
7636 exp->action == ACT_DENY))
7637 return 0;
7638
7639 cur_idx = txn->hdr_idx.v[old_idx].next;
7640 if (!cur_idx)
7641 break;
7642
7643 cur_hdr = &txn->hdr_idx.v[cur_idx];
7644 cur_ptr = cur_next;
7645 cur_end = cur_ptr + cur_hdr->len;
7646 cur_next = cur_end + cur_hdr->cr + 1;
7647
7648 /* Now we have one header between cur_ptr and cur_end,
7649 * and the next header starts at cur_next.
7650 */
7651
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]7652 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]7653 switch (exp->action) {
7654 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7655 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7656 last_hdr = 1;
7657 break;
7658
7659 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7660 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7661 last_hdr = 1;
7662 break;
7663
7664 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7665 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7666 if (trash.len < 0)
7667 return -1;
7668
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7669 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7670 /* FIXME: if the user adds a newline in the replacement, the
7671 * index will not be recalculated for now, and the new line
7672 * will not be counted as a new header.
7673 */
7674
7675 cur_end += delta;
7676 cur_next += delta;
7677 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7678 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7679 break;
7680
7681 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7682 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7683 cur_next += delta;
7684
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7685 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7686 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7687 txn->hdr_idx.used--;
7688 cur_hdr->len = 0;
7689 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7690 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7691 break;
7692
7693 }
7694 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7695
7696 /* keep the link from this header to next one in case of later
7697 * removal of next header.
7698 */
7699 old_idx = cur_idx;
7700 }
7701 return 0;
7702}
7703
7704
7705/* Apply the filter to the status line in the response buffer <rtr>.
7706 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7707 * or -1 if a replacement resulted in an invalid status line.
7708 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7709int 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]7710{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7711 char *cur_ptr, *cur_end;
7712 int done;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7713 struct http_txn *txn = &s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7714 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7715
7716
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7717 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7718 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7719 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7720 (exp->action == ACT_ALLOW ||
7721 exp->action == ACT_DENY))
7722 return 0;
7723 else if (exp->action == ACT_REMOVE)
7724 return 0;
7725
7726 done = 0;
7727
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7728 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7729 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7730
7731 /* Now we have the status line between cur_ptr and cur_end */
7732
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]7733 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]7734 switch (exp->action) {
7735 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7736 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7737 done = 1;
7738 break;
7739
7740 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7741 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7742 done = 1;
7743 break;
7744
7745 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7746 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7747 if (trash.len < 0)
7748 return -1;
7749
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7750 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7751 /* FIXME: if the user adds a newline in the replacement, the
7752 * index will not be recalculated for now, and the new line
7753 * will not be counted as a new header.
7754 */
7755
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7756 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7757 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7758 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7759 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7760 cur_ptr, cur_end + 1,
7761 NULL, NULL);
7762 if (unlikely(!cur_end))
7763 return -1;
7764
7765 /* we have a full respnse and we know that we have either a CR
7766 * or an LF at <ptr>.
7767 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7768 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]7769 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]7770 /* there is no point trying this regex on headers */
7771 return 1;
7772 }
7773 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7774 return done;
7775}
7776
7777
7778
7779/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7780 * 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]7781 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7782 * unparsable response.
7783 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7784int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7785{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7786 struct http_txn *txn = &s->txn;
7787 struct hdr_exp *exp;
7788
7789 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7790 int ret;
7791
7792 /*
7793 * The interleaving of transformations and verdicts
7794 * makes it difficult to decide to continue or stop
7795 * the evaluation.
7796 */
7797
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7798 if (txn->flags & TX_SVDENY)
7799 break;
7800
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7801 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7802 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7803 exp->action == ACT_PASS)) {
7804 exp = exp->next;
7805 continue;
7806 }
7807
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7808 /* if this filter had a condition, evaluate it now and skip to
7809 * next filter if the condition does not match.
7810 */
7811 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7812 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]7813 ret = acl_pass(ret);
7814 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7815 ret = !ret;
7816 if (!ret)
7817 continue;
7818 }
7819
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7820 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7821 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7822 if (unlikely(ret < 0))
7823 return -1;
7824
7825 if (likely(ret == 0)) {
7826 /* The filter did not match the response, it can be
7827 * iterated through all headers.
7828 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7829 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
7830 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7831 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7832 }
7833 return 0;
7834}
7835
7836
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7837/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7838 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7839 * desirable to call it only when needed. This function is also used when we
7840 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7841 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7842void manage_server_side_cookies(struct session *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7843{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7844 struct http_txn *txn = &s->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7845 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7846 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7847 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7848 char *hdr_beg, *hdr_end, *hdr_next;
7849 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7850
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7851 /* Iterate through the headers.
7852 * we start with the start line.
7853 */
7854 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7855 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7856
7857 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7858 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7859 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7860
7861 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7862 hdr_beg = hdr_next;
7863 hdr_end = hdr_beg + cur_hdr->len;
7864 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7865
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7866 /* We have one full header between hdr_beg and hdr_end, and the
7867 * next header starts at hdr_next. We're only interested in
7868 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7869 */
7870
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7871 is_cookie2 = 0;
7872 prev = hdr_beg + 10;
7873 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7874 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7875 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7876 if (!val) {
7877 old_idx = cur_idx;
7878 continue;
7879 }
7880 is_cookie2 = 1;
7881 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7882 }
7883
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7884 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7885 * <prev> points to the colon.
7886 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7887 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7888
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7889 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7890 * check-cache is enabled) and we are not interested in checking
7891 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7892 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7893 if (s->be->cookie_name == NULL &&
7894 s->be->appsession_name == NULL &&
7895 s->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7896 return;
7897
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7898 /* OK so now we know we have to process this response cookie.
7899 * The format of the Set-Cookie header is slightly different
7900 * from the format of the Cookie header in that it does not
7901 * support the comma as a cookie delimiter (thus the header
7902 * cannot be folded) because the Expires attribute described in
7903 * the original Netscape's spec may contain an unquoted date
7904 * with a comma inside. We have to live with this because
7905 * many browsers don't support Max-Age and some browsers don't
7906 * support quoted strings. However the Set-Cookie2 header is
7907 * clean.
7908 *
7909 * We have to keep multiple pointers in order to support cookie
7910 * removal at the beginning, middle or end of header without
7911 * corrupting the header (in case of set-cookie2). A special
7912 * pointer, <scav> points to the beginning of the set-cookie-av
7913 * fields after the first semi-colon. The <next> pointer points
7914 * either to the end of line (set-cookie) or next unquoted comma
7915 * (set-cookie2). All of these headers are valid :
7916 *
7917 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7918 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7919 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7920 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7921 * | | | | | | | | | |
7922 * | | | | | | | | +-> next hdr_end <--+
7923 * | | | | | | | +------------> scav
7924 * | | | | | | +--------------> val_end
7925 * | | | | | +--------------------> val_beg
7926 * | | | | +----------------------> equal
7927 * | | | +------------------------> att_end
7928 * | | +----------------------------> att_beg
7929 * | +------------------------------> prev
7930 * +-----------------------------------------> hdr_beg
7931 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7932
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7933 for (; prev < hdr_end; prev = next) {
7934 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7935
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7936 /* find att_beg */
7937 att_beg = prev + 1;
7938 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7939 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7940
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7941 /* find att_end : this is the first character after the last non
7942 * space before the equal. It may be equal to hdr_end.
7943 */
7944 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7945
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7946 while (equal < hdr_end) {
7947 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7948 break;
7949 if (http_is_spht[(unsigned char)*equal++])
7950 continue;
7951 att_end = equal;
7952 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7953
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7954 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7955 * is between <att_beg> and <equal>, both may be identical.
7956 */
7957
7958 /* look for end of cookie if there is an equal sign */
7959 if (equal < hdr_end && *equal == '=') {
7960 /* look for the beginning of the value */
7961 val_beg = equal + 1;
7962 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7963 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7964
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7965 /* find the end of the value, respecting quotes */
7966 next = find_cookie_value_end(val_beg, hdr_end);
7967
7968 /* make val_end point to the first white space or delimitor after the value */
7969 val_end = next;
7970 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7971 val_end--;
7972 } else {
7973 /* <equal> points to next comma, semi-colon or EOL */
7974 val_beg = val_end = next = equal;
7975 }
7976
7977 if (next < hdr_end) {
7978 /* Set-Cookie2 supports multiple cookies, and <next> points to
7979 * a colon or semi-colon before the end. So skip all attr-value
7980 * pairs and look for the next comma. For Set-Cookie, since
7981 * commas are permitted in values, skip to the end.
7982 */
7983 if (is_cookie2)
7984 next = find_hdr_value_end(next, hdr_end);
7985 else
7986 next = hdr_end;
7987 }
7988
7989 /* Now everything is as on the diagram above */
7990
7991 /* Ignore cookies with no equal sign */
7992 if (equal == val_end)
7993 continue;
7994
7995 /* If there are spaces around the equal sign, we need to
7996 * strip them otherwise we'll get trouble for cookie captures,
7997 * or even for rewrites. Since this happens extremely rarely,
7998 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7999 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8000 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8001 int stripped_before = 0;
8002 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8003
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8004 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8005 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8006 equal += stripped_before;
8007 val_beg += stripped_before;
8008 }
8009
8010 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8011 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8012 val_beg += stripped_after;
8013 stripped_before += stripped_after;
8014 }
8015
8016 val_end += stripped_before;
8017 next += stripped_before;
8018 hdr_end += stripped_before;
8019 hdr_next += stripped_before;
8020 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8021 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8022 }
8023
8024 /* First, let's see if we want to capture this cookie. We check
8025 * that we don't already have a server side cookie, because we
8026 * can only capture one. Also as an optimisation, we ignore
8027 * cookies shorter than the declared name.
8028 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8029 if (s->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8030 txn->srv_cookie == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8031 (val_end - att_beg >= s->fe->capture_namelen) &&
8032 memcmp(att_beg, s->fe->capture_name, s->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8033 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8034 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8035 Alert("HTTP logging : out of memory.\n");
8036 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8037 else {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8038 if (log_len > s->fe->capture_len)
8039 log_len = s->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8040 memcpy(txn->srv_cookie, att_beg, log_len);
8041 txn->srv_cookie[log_len] = 0;
8042 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8043 }
8044
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8045 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8046 /* now check if we need to process it for persistence */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8047 if (!(s->flags & SN_IGNORE_PRST) &&
8048 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8049 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8050 /* assume passive cookie by default */
8051 txn->flags &= ~TX_SCK_MASK;
8052 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8053
8054 /* If the cookie is in insert mode on a known server, we'll delete
8055 * this occurrence because we'll insert another one later.
8056 * 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]8057 * a direct access.
8058 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8059 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8060 /* The "preserve" flag was set, we don't want to touch the
8061 * server's cookie.
8062 */
8063 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8064 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
8065 ((s->flags & SN_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8066 /* this cookie must be deleted */
8067 if (*prev == ':' && next == hdr_end) {
8068 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8069 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8070 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8071 txn->hdr_idx.used--;
8072 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8073 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8074 hdr_next += delta;
8075 http_msg_move_end(&txn->rsp, delta);
8076 /* note: while both invalid now, <next> and <hdr_end>
8077 * are still equal, so the for() will stop as expected.
8078 */
8079 } else {
8080 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8081 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8082 next = prev;
8083 hdr_end += delta;
8084 hdr_next += delta;
8085 cur_hdr->len += delta;
8086 http_msg_move_end(&txn->rsp, delta);
8087 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8088 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8089 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8090 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8091 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8092 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8093 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8094 * with this server since we know it.
8095 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8096 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8097 next += delta;
8098 hdr_end += delta;
8099 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8100 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8101 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8102
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8103 txn->flags &= ~TX_SCK_MASK;
8104 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8105 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8106 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8107 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8108 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8109 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8110 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8111 next += delta;
8112 hdr_end += delta;
8113 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8114 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8115 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8116
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8117 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8118 txn->flags &= ~TX_SCK_MASK;
8119 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8120 }
8121 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]8122 /* 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]8123 else if (!(s->flags & SN_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8124 int cmp_len, value_len;
8125 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8126
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8127 if (s->be->options2 & PR_O2_AS_PFX) {
8128 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
8129 value_begin = att_beg + s->be->appsession_name_len;
8130 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]8131 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8132 cmp_len = att_end - att_beg;
8133 value_begin = val_beg;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8134 value_len = MIN(s->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8135 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8136
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8137 if ((cmp_len == s->be->appsession_name_len) &&
8138 (memcmp(att_beg, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8139 /* free a possibly previously allocated memory */
8140 pool_free2(apools.sessid, txn->sessid);
8141
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8142 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8143 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8144 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8145 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]8146 return;
8147 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8148 memcpy(txn->sessid, value_begin, value_len);
8149 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8150 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8151 }
8152 /* that's done for this cookie, check the next one on the same
8153 * line when next != hdr_end (only if is_cookie2).
8154 */
8155 }
8156 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8157 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8158 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8159
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8160 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8161 appsess *asession = NULL;
8162 /* only do insert, if lookup fails */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8163 asession = appsession_hash_lookup(&(s->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8164 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]8165 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8166 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
8167 Alert("Not enough Memory process_srv():asession:calloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8168 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8169 return;
8170 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8171 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
8172
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8173 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
8174 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8175 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8176 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8177 return;
8178 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8179 memcpy(asession->sessid, txn->sessid, s->be->appsession_len);
8180 asession->sessid[s->be->appsession_len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8181
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8182 server_id_len = strlen(objt_server(s->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8183 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8184 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8185 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8186 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8187 return;
8188 }
8189 asession->serverid[0] = '\0';
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8190 memcpy(asession->serverid, objt_server(s->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8191
8192 asession->request_count = 0;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8193 appsession_hash_insert(&(s->be->htbl_proxy), asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8194 }
8195
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8196 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8197 asession->request_count++;
8198 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8199}
8200
8201
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8202/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8203 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8204 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8205void check_response_for_cacheability(struct session *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8206{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8207 struct http_txn *txn = &s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8208 char *p1, *p2;
8209
8210 char *cur_ptr, *cur_end, *cur_next;
8211 int cur_idx;
8212
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8213 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8214 return;
8215
8216 /* Iterate through the headers.
8217 * we start with the start line.
8218 */
8219 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8220 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8221
8222 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8223 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8224 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8225
8226 cur_hdr = &txn->hdr_idx.v[cur_idx];
8227 cur_ptr = cur_next;
8228 cur_end = cur_ptr + cur_hdr->len;
8229 cur_next = cur_end + cur_hdr->cr + 1;
8230
8231 /* We have one full header between cur_ptr and cur_end, and the
8232 * next header starts at cur_next. We're only interested in
8233 * "Cookie:" headers.
8234 */
8235
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8236 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8237 if (val) {
8238 if ((cur_end - (cur_ptr + val) >= 8) &&
8239 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8240 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8241 return;
8242 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8243 }
8244
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8245 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8246 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8247 continue;
8248
8249 /* OK, right now we know we have a cache-control header at cur_ptr */
8250
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8251 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8252
8253 if (p1 >= cur_end) /* no more info */
8254 continue;
8255
8256 /* p1 is at the beginning of the value */
8257 p2 = p1;
8258
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8259 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8260 p2++;
8261
8262 /* we have a complete value between p1 and p2 */
8263 if (p2 < cur_end && *p2 == '=') {
8264 /* we have something of the form no-cache="set-cookie" */
8265 if ((cur_end - p1 >= 21) &&
8266 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8267 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8268 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8269 continue;
8270 }
8271
8272 /* OK, so we know that either p2 points to the end of string or to a comma */
8273 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8274 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8275 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8276 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8277 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8278 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8279 return;
8280 }
8281
8282 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8283 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8284 continue;
8285 }
8286 }
8287}
8288
8289
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8290/*
8291 * Try to retrieve a known appsession in the URI, then the associated server.
8292 * If the server is found, it's assigned to the session.
8293 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8294void get_srv_from_appsession(struct session *s, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8295{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8296 char *end_params, *first_param, *cur_param, *next_param;
8297 char separator;
8298 int value_len;
8299
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8300 int mode = s->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8301
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8302 if (s->be->appsession_name == NULL ||
8303 (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]8304 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8305 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8306
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8307 first_param = NULL;
8308 switch (mode) {
8309 case PR_O2_AS_M_PP:
8310 first_param = memchr(begin, ';', len);
8311 break;
8312 case PR_O2_AS_M_QS:
8313 first_param = memchr(begin, '?', len);
8314 break;
8315 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8316
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8317 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8318 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8319 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8320
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8321 switch (mode) {
8322 case PR_O2_AS_M_PP:
8323 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
8324 end_params = (char *) begin + len;
8325 }
8326 separator = ';';
8327 break;
8328 case PR_O2_AS_M_QS:
8329 end_params = (char *) begin + len;
8330 separator = '&';
8331 break;
8332 default:
8333 /* unknown mode, shouldn't happen */
8334 return;
8335 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8336
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8337 cur_param = next_param = end_params;
8338 while (cur_param > first_param) {
8339 cur_param--;
8340 if ((cur_param[0] == separator) || (cur_param == first_param)) {
8341 /* let's see if this is the appsession parameter */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8342 if ((cur_param + s->be->appsession_name_len + 1 < next_param) &&
8343 ((s->be->options2 & PR_O2_AS_PFX) || cur_param[s->be->appsession_name_len + 1] == '=') &&
8344 (strncasecmp(cur_param + 1, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8345 /* Cool... it's the right one */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8346 cur_param += s->be->appsession_name_len + (s->be->options2 & PR_O2_AS_PFX ? 1 : 2);
8347 value_len = MIN(s->be->appsession_len, next_param - cur_param);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8348 if (value_len > 0) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8349 manage_client_side_appsession(s, cur_param, value_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8350 }
8351 break;
8352 }
8353 next_param = cur_param;
8354 }
8355 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8356#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]8357 Alert("get_srv_from_appsession\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8358 appsession_hash_dump(&(s->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8359#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8360}
8361
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8362/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8363 * 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]8364 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8365 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8366 * 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]8367 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8368 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8369 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8370 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8371int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8372{
8373 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8374 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8375 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8376
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8377 if (!uri_auth)
8378 return 0;
8379
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8380 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]8381 return 0;
8382
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8383 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8384 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8385 return 0;
8386
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8387 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8388 return 0;
8389
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8390 return 1;
8391}
8392
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8393/*
8394 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8395 * By default it tries to report the error position as msg->err_pos. However if
8396 * this one is not set, it will then report msg->next, which is the last known
8397 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8398 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8399 */
8400void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8401 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8402 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8403{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8404 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8405 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8406
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8407 es->len = MIN(chn->buf->i, sizeof(es->buf));
8408 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8409 len1 = MIN(len1, es->len);
8410 len2 = es->len - len1; /* remaining data if buffer wraps */
8411
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8412 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8413 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8414 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8415
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8416 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8417 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8418 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8419 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8420
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8421 es->when = date; // user-visible date
8422 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8423 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8424 es->oe = other_end;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8425 if (objt_conn(s->req->prod->end))
8426 es->src = __objt_conn(s->req->prod->end)->addr.from;
8427 else
8428 memset(&es->src, 0, sizeof(es->src));
8429
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8430 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8431 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8432 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8433 es->s_flags = s->flags;
8434 es->t_flags = s->txn.flags;
8435 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8436 es->b_out = chn->buf->o;
8437 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8438 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8439 es->m_clen = msg->chunk_len;
8440 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8441}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8442
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8443/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8444 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8445 * performed over the whole headers. Otherwise it must contain a valid header
8446 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8447 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8448 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8449 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8450 * -1. The value fetch stops at commas, so this function is suited for use with
8451 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8452 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8453 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8454unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8455 struct hdr_idx *idx, int occ,
8456 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8457{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8458 struct hdr_ctx local_ctx;
8459 char *ptr_hist[MAX_HDR_HISTORY];
8460 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8461 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8462 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8463
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8464 if (!ctx) {
8465 local_ctx.idx = 0;
8466 ctx = &local_ctx;
8467 }
8468
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8469 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8470 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8471 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8472 occ--;
8473 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8474 *vptr = ctx->line + ctx->val;
8475 *vlen = ctx->vlen;
8476 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8477 }
8478 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8479 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8480 }
8481
8482 /* negative occurrence, we scan all the list then walk back */
8483 if (-occ > MAX_HDR_HISTORY)
8484 return 0;
8485
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8486 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8487 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8488 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8489 len_hist[hist_ptr] = ctx->vlen;
8490 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8491 hist_ptr = 0;
8492 found++;
8493 }
8494 if (-occ > found)
8495 return 0;
8496 /* 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]8497 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8498 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8499 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8500 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8501 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8502 if (hist_ptr >= MAX_HDR_HISTORY)
8503 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8504 *vptr = ptr_hist[hist_ptr];
8505 *vlen = len_hist[hist_ptr];
8506 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8507}
8508
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8509/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8510 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8511 * performed over the whole headers. Otherwise it must contain a valid header
8512 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8513 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8514 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8515 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8516 * -1. This function differs from http_get_hdr() in that it only returns full
8517 * line header values and does not stop at commas.
8518 * The return value is 0 if nothing was found, or non-zero otherwise.
8519 */
8520unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8521 struct hdr_idx *idx, int occ,
8522 struct hdr_ctx *ctx, char **vptr, int *vlen)
8523{
8524 struct hdr_ctx local_ctx;
8525 char *ptr_hist[MAX_HDR_HISTORY];
8526 int len_hist[MAX_HDR_HISTORY];
8527 unsigned int hist_ptr;
8528 int found;
8529
8530 if (!ctx) {
8531 local_ctx.idx = 0;
8532 ctx = &local_ctx;
8533 }
8534
8535 if (occ >= 0) {
8536 /* search from the beginning */
8537 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8538 occ--;
8539 if (occ <= 0) {
8540 *vptr = ctx->line + ctx->val;
8541 *vlen = ctx->vlen;
8542 return 1;
8543 }
8544 }
8545 return 0;
8546 }
8547
8548 /* negative occurrence, we scan all the list then walk back */
8549 if (-occ > MAX_HDR_HISTORY)
8550 return 0;
8551
8552 found = hist_ptr = 0;
8553 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8554 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8555 len_hist[hist_ptr] = ctx->vlen;
8556 if (++hist_ptr >= MAX_HDR_HISTORY)
8557 hist_ptr = 0;
8558 found++;
8559 }
8560 if (-occ > found)
8561 return 0;
8562 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8563 * find occurrence -occ, so we have to check [hist_ptr+occ].
8564 */
8565 hist_ptr += occ;
8566 if (hist_ptr >= MAX_HDR_HISTORY)
8567 hist_ptr -= MAX_HDR_HISTORY;
8568 *vptr = ptr_hist[hist_ptr];
8569 *vlen = len_hist[hist_ptr];
8570 return 1;
8571}
8572
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8573/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8574 * Print a debug line with a header. Always stop at the first CR or LF char,
8575 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8576 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8577 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8578void debug_hdr(const char *dir, struct session *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8579{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8580 int max;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8581 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8582 dir,
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8583 objt_conn(s->req->prod->end) ? (unsigned short)objt_conn(s->req->prod->end)->t.sock.fd : -1,
8584 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]8585
8586 for (max = 0; start + max < end; max++)
8587 if (start[max] == '\r' || start[max] == '\n')
8588 break;
8589
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8590 UBOUND(max, trash.size - trash.len - 3);
8591 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8592 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8593 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8594}
8595
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8596/*
8597 * Initialize a new HTTP transaction for session <s>. It is assumed that all
8598 * the required fields are properly allocated and that we only need to (re)init
8599 * them. This should be used before processing any new request.
8600 */
8601void http_init_txn(struct session *s)
8602{
8603 struct http_txn *txn = &s->txn;
8604 struct proxy *fe = s->fe;
8605
8606 txn->flags = 0;
8607 txn->status = -1;
8608
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8609 txn->cookie_first_date = 0;
8610 txn->cookie_last_date = 0;
8611
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8612 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8613 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8614 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8615 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8616 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8617 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8618 txn->req.chunk_len = 0LL;
8619 txn->req.body_len = 0LL;
8620 txn->rsp.chunk_len = 0LL;
8621 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8622 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8623 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8624 txn->req.chn = s->req;
8625 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8626
8627 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8628
8629 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8630 if (fe->options2 & PR_O2_REQBUG_OK)
8631 txn->req.err_pos = -1; /* let buggy requests pass */
8632
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8633 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8634 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8635
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8636 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8637 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8638
8639 if (txn->hdr_idx.v)
8640 hdr_idx_init(&txn->hdr_idx);
8641}
8642
8643/* to be used at the end of a transaction */
8644void http_end_txn(struct session *s)
8645{
8646 struct http_txn *txn = &s->txn;
8647
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]8648 /* release any possible compression context */
8649 if (s->flags & SN_COMP_READY)
8650 s->comp_algo->end(&s->comp_ctx);
8651 s->comp_algo = NULL;
8652 s->flags &= ~SN_COMP_READY;
8653
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8654 /* these ones will have been dynamically allocated */
8655 pool_free2(pool2_requri, txn->uri);
8656 pool_free2(pool2_capture, txn->cli_cookie);
8657 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8658 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8659 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8660
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8661 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8662 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8663 txn->uri = NULL;
8664 txn->srv_cookie = NULL;
8665 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8666
8667 if (txn->req.cap) {
8668 struct cap_hdr *h;
8669 for (h = s->fe->req_cap; h; h = h->next)
8670 pool_free2(h->pool, txn->req.cap[h->index]);
8671 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8672 }
8673
8674 if (txn->rsp.cap) {
8675 struct cap_hdr *h;
8676 for (h = s->fe->rsp_cap; h; h = h->next)
8677 pool_free2(h->pool, txn->rsp.cap[h->index]);
8678 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8679 }
8680
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8681}
8682
8683/* to be used at the end of a transaction to prepare a new one */
8684void http_reset_txn(struct session *s)
8685{
8686 http_end_txn(s);
8687 http_init_txn(s);
8688
8689 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8690 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8691 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8692 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8693 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8694 /* re-init store persistence */
8695 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8696 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8697
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8698 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8699
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8700 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8701
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8702 /* We must trim any excess data from the response buffer, because we
8703 * may have blocked an invalid response from a server that we don't
8704 * want to accidentely forward once we disable the analysers, nor do
8705 * we want those data to come along with next response. A typical
8706 * example of such data would be from a buggy server responding to
8707 * a HEAD with some data, or sending more than the advertised
8708 * content-length.
8709 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8710 if (unlikely(s->rep->buf->i))
8711 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8712
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8713 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8714 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8715
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8716 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8717 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8718
8719 s->req->rex = TICK_ETERNITY;
8720 s->req->wex = TICK_ETERNITY;
8721 s->req->analyse_exp = TICK_ETERNITY;
8722 s->rep->rex = TICK_ETERNITY;
8723 s->rep->wex = TICK_ETERNITY;
8724 s->rep->analyse_exp = TICK_ETERNITY;
8725}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8726
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8727void free_http_res_rules(struct list *r)
8728{
8729 struct http_res_rule *tr, *pr;
8730
8731 list_for_each_entry_safe(pr, tr, r, list) {
8732 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8733 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8734 free(pr);
8735 }
8736}
8737
8738void free_http_req_rules(struct list *r)
8739{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8740 struct http_req_rule *tr, *pr;
8741
8742 list_for_each_entry_safe(pr, tr, r, list) {
8743 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8744 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8745 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8746
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8747 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8748 free(pr);
8749 }
8750}
8751
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8752/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8753struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8754{
8755 struct http_req_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]8756 struct http_req_action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8757 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8758 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8759
8760 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8761 if (!rule) {
8762 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8763 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8764 }
8765
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8766 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8767 rule->action = HTTP_REQ_ACT_ALLOW;
8768 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]8769 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8770 rule->action = HTTP_REQ_ACT_DENY;
8771 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8772 } else if (!strcmp(args[0], "tarpit")) {
8773 rule->action = HTTP_REQ_ACT_TARPIT;
8774 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8775 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8776 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8777 cur_arg = 1;
8778
8779 while(*args[cur_arg]) {
8780 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8781 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8782 cur_arg+=2;
8783 continue;
8784 } else
8785 break;
8786 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8787 } else if (!strcmp(args[0], "set-nice")) {
8788 rule->action = HTTP_REQ_ACT_SET_NICE;
8789 cur_arg = 1;
8790
8791 if (!*args[cur_arg] ||
8792 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8793 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8794 file, linenum, args[0]);
8795 goto out_err;
8796 }
8797 rule->arg.nice = atoi(args[cur_arg]);
8798 if (rule->arg.nice < -1024)
8799 rule->arg.nice = -1024;
8800 else if (rule->arg.nice > 1024)
8801 rule->arg.nice = 1024;
8802 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8803 } else if (!strcmp(args[0], "set-tos")) {
8804#ifdef IP_TOS
8805 char *err;
8806 rule->action = HTTP_REQ_ACT_SET_TOS;
8807 cur_arg = 1;
8808
8809 if (!*args[cur_arg] ||
8810 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8811 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8812 file, linenum, args[0]);
8813 goto out_err;
8814 }
8815
8816 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8817 if (err && *err != '\0') {
8818 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8819 file, linenum, err, args[0]);
8820 goto out_err;
8821 }
8822 cur_arg++;
8823#else
8824 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8825 goto out_err;
8826#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8827 } else if (!strcmp(args[0], "set-mark")) {
8828#ifdef SO_MARK
8829 char *err;
8830 rule->action = HTTP_REQ_ACT_SET_MARK;
8831 cur_arg = 1;
8832
8833 if (!*args[cur_arg] ||
8834 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8835 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8836 file, linenum, args[0]);
8837 goto out_err;
8838 }
8839
8840 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8841 if (err && *err != '\0') {
8842 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8843 file, linenum, err, args[0]);
8844 goto out_err;
8845 }
8846 cur_arg++;
8847 global.last_checks |= LSTCHK_NETADM;
8848#else
8849 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8850 goto out_err;
8851#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8852 } else if (!strcmp(args[0], "set-log-level")) {
8853 rule->action = HTTP_REQ_ACT_SET_LOGL;
8854 cur_arg = 1;
8855
8856 if (!*args[cur_arg] ||
8857 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8858 bad_log_level:
8859 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8860 file, linenum, args[0]);
8861 goto out_err;
8862 }
8863 if (strcmp(args[cur_arg], "silent") == 0)
8864 rule->arg.loglevel = -1;
8865 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8866 goto bad_log_level;
8867 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8868 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8869 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8870 cur_arg = 1;
8871
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8872 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8873 (*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]8874 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8875 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8876 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8877 }
8878
8879 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8880 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8881 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8882
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8883 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8884 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]8885 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8886 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8887 free(proxy->conf.lfs_file);
8888 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8889 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8890 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]8891 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
8892 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]8893 cur_arg = 1;
8894
8895 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann8f249f42014-06-24 11:10:00 +0200[diff] [blame]8896 (*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]8897 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
8898 file, linenum, args[0]);
8899 goto out_err;
8900 }
8901
8902 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8903 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8904 LIST_INIT(&rule->arg.hdr_add.fmt);
8905
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8906 error = NULL;
8907 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
8908 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
8909 args[cur_arg + 1], error);
8910 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8911 goto out_err;
8912 }
8913
8914 proxy->conf.args.ctx = ARGC_HRQ;
8915 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
8916 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8917 file, linenum);
8918
8919 free(proxy->conf.lfs_file);
8920 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8921 proxy->conf.lfs_line = proxy->conf.args.line;
8922 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8923 } else if (strcmp(args[0], "del-header") == 0) {
8924 rule->action = HTTP_REQ_ACT_DEL_HDR;
8925 cur_arg = 1;
8926
8927 if (!*args[cur_arg] ||
8928 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8929 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
8930 file, linenum, args[0]);
8931 goto out_err;
8932 }
8933
8934 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8935 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8936
8937 proxy->conf.args.ctx = ARGC_HRQ;
8938 free(proxy->conf.lfs_file);
8939 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8940 proxy->conf.lfs_line = proxy->conf.args.line;
8941 cur_arg += 1;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8942 } else if (strcmp(args[0], "redirect") == 0) {
8943 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]8944 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8945
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8946 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]8947 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8948 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8949 goto out_err;
8950 }
8951
8952 /* this redirect rule might already contain a parsed condition which
8953 * we'll pass to the http-request rule.
8954 */
8955 rule->action = HTTP_REQ_ACT_REDIR;
8956 rule->arg.redir = redir;
8957 rule->cond = redir->cond;
8958 redir->cond = NULL;
8959 cur_arg = 2;
8960 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8961 } else if (strncmp(args[0], "add-acl", 7) == 0) {
8962 /* http-request add-acl(<reference (acl name)>) <key pattern> */
8963 rule->action = HTTP_REQ_ACT_ADD_ACL;
8964 /*
8965 * '+ 8' for 'add-acl('
8966 * '- 9' for 'add-acl(' + trailing ')'
8967 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]8968 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8969
8970 cur_arg = 1;
8971
8972 if (!*args[cur_arg] ||
8973 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8974 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
8975 file, linenum, args[0]);
8976 goto out_err;
8977 }
8978
8979 LIST_INIT(&rule->arg.map.key);
8980 proxy->conf.args.ctx = ARGC_HRQ;
8981 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
8982 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8983 file, linenum);
8984 free(proxy->conf.lfs_file);
8985 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8986 proxy->conf.lfs_line = proxy->conf.args.line;
8987 cur_arg += 1;
8988 } else if (strncmp(args[0], "del-acl", 7) == 0) {
8989 /* http-request del-acl(<reference (acl name)>) <key pattern> */
8990 rule->action = HTTP_REQ_ACT_DEL_ACL;
8991 /*
8992 * '+ 8' for 'del-acl('
8993 * '- 9' for 'del-acl(' + trailing ')'
8994 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]8995 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]8996
8997 cur_arg = 1;
8998
8999 if (!*args[cur_arg] ||
9000 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9001 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9002 file, linenum, args[0]);
9003 goto out_err;
9004 }
9005
9006 LIST_INIT(&rule->arg.map.key);
9007 proxy->conf.args.ctx = ARGC_HRQ;
9008 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9009 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9010 file, linenum);
9011 free(proxy->conf.lfs_file);
9012 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9013 proxy->conf.lfs_line = proxy->conf.args.line;
9014 cur_arg += 1;
9015 } else if (strncmp(args[0], "del-map", 7) == 0) {
9016 /* http-request del-map(<reference (map name)>) <key pattern> */
9017 rule->action = HTTP_REQ_ACT_DEL_MAP;
9018 /*
9019 * '+ 8' for 'del-map('
9020 * '- 9' for 'del-map(' + trailing ')'
9021 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9022 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9023
9024 cur_arg = 1;
9025
9026 if (!*args[cur_arg] ||
9027 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9028 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9029 file, linenum, args[0]);
9030 goto out_err;
9031 }
9032
9033 LIST_INIT(&rule->arg.map.key);
9034 proxy->conf.args.ctx = ARGC_HRQ;
9035 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9036 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9037 file, linenum);
9038 free(proxy->conf.lfs_file);
9039 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9040 proxy->conf.lfs_line = proxy->conf.args.line;
9041 cur_arg += 1;
9042 } else if (strncmp(args[0], "set-map", 7) == 0) {
9043 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
9044 rule->action = HTTP_REQ_ACT_SET_MAP;
9045 /*
9046 * '+ 8' for 'set-map('
9047 * '- 9' for 'set-map(' + trailing ')'
9048 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9049 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9050
9051 cur_arg = 1;
9052
9053 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9054 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9055 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9056 file, linenum, args[0]);
9057 goto out_err;
9058 }
9059
9060 LIST_INIT(&rule->arg.map.key);
9061 LIST_INIT(&rule->arg.map.value);
9062 proxy->conf.args.ctx = ARGC_HRQ;
9063
9064 /* key pattern */
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
9069 /* value pattern */
9070 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9071 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9072 file, linenum);
9073 free(proxy->conf.lfs_file);
9074 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9075 proxy->conf.lfs_line = proxy->conf.args.line;
9076
9077 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9078 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9079 char *errmsg = NULL;
9080 cur_arg = 1;
9081 /* try in the module list */
9082 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9083 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9084 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9085 free(errmsg);
9086 goto out_err;
9087 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9088 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9089 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]9090 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9091 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9092 }
9093
9094 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9095 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9096 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9097
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9098 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9099 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9100 file, linenum, args[0], errmsg);
9101 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9102 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9103 }
9104 rule->cond = cond;
9105 }
9106 else if (*args[cur_arg]) {
9107 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9108 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9109 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9110 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9111 }
9112
9113 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9114 out_err:
9115 free(rule);
9116 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9117}
9118
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9119/* parse an "http-respose" rule */
9120struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9121{
9122 struct http_res_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9123 struct http_res_action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9124 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9125 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9126
9127 rule = calloc(1, sizeof(*rule));
9128 if (!rule) {
9129 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9130 goto out_err;
9131 }
9132
9133 if (!strcmp(args[0], "allow")) {
9134 rule->action = HTTP_RES_ACT_ALLOW;
9135 cur_arg = 1;
9136 } else if (!strcmp(args[0], "deny")) {
9137 rule->action = HTTP_RES_ACT_DENY;
9138 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9139 } else if (!strcmp(args[0], "set-nice")) {
9140 rule->action = HTTP_RES_ACT_SET_NICE;
9141 cur_arg = 1;
9142
9143 if (!*args[cur_arg] ||
9144 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9145 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9146 file, linenum, args[0]);
9147 goto out_err;
9148 }
9149 rule->arg.nice = atoi(args[cur_arg]);
9150 if (rule->arg.nice < -1024)
9151 rule->arg.nice = -1024;
9152 else if (rule->arg.nice > 1024)
9153 rule->arg.nice = 1024;
9154 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9155 } else if (!strcmp(args[0], "set-tos")) {
9156#ifdef IP_TOS
9157 char *err;
9158 rule->action = HTTP_RES_ACT_SET_TOS;
9159 cur_arg = 1;
9160
9161 if (!*args[cur_arg] ||
9162 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9163 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9164 file, linenum, args[0]);
9165 goto out_err;
9166 }
9167
9168 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9169 if (err && *err != '\0') {
9170 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9171 file, linenum, err, args[0]);
9172 goto out_err;
9173 }
9174 cur_arg++;
9175#else
9176 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9177 goto out_err;
9178#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9179 } else if (!strcmp(args[0], "set-mark")) {
9180#ifdef SO_MARK
9181 char *err;
9182 rule->action = HTTP_RES_ACT_SET_MARK;
9183 cur_arg = 1;
9184
9185 if (!*args[cur_arg] ||
9186 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9187 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9188 file, linenum, args[0]);
9189 goto out_err;
9190 }
9191
9192 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9193 if (err && *err != '\0') {
9194 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9195 file, linenum, err, args[0]);
9196 goto out_err;
9197 }
9198 cur_arg++;
9199 global.last_checks |= LSTCHK_NETADM;
9200#else
9201 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9202 goto out_err;
9203#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9204 } else if (!strcmp(args[0], "set-log-level")) {
9205 rule->action = HTTP_RES_ACT_SET_LOGL;
9206 cur_arg = 1;
9207
9208 if (!*args[cur_arg] ||
9209 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9210 bad_log_level:
9211 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9212 file, linenum, args[0]);
9213 goto out_err;
9214 }
9215 if (strcmp(args[cur_arg], "silent") == 0)
9216 rule->arg.loglevel = -1;
9217 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9218 goto bad_log_level;
9219 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9220 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9221 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
9222 cur_arg = 1;
9223
9224 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9225 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9226 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9227 file, linenum, args[0]);
9228 goto out_err;
9229 }
9230
9231 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9232 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9233 LIST_INIT(&rule->arg.hdr_add.fmt);
9234
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9235 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9236 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]9237 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9238 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9239 free(proxy->conf.lfs_file);
9240 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9241 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9242 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9243 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9244 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]9245 cur_arg = 1;
9246
9247 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmanna772b942014-08-08 17:29:06 +0200[diff] [blame]9248 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9249 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9250 file, linenum, args[0]);
9251 goto out_err;
9252 }
9253
9254 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9255 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9256 LIST_INIT(&rule->arg.hdr_add.fmt);
9257
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9258 error = NULL;
9259 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9260 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9261 args[cur_arg + 1], error);
9262 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9263 goto out_err;
9264 }
9265
9266 proxy->conf.args.ctx = ARGC_HRQ;
9267 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9268 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9269 file, linenum);
9270
9271 free(proxy->conf.lfs_file);
9272 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9273 proxy->conf.lfs_line = proxy->conf.args.line;
9274 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9275 } else if (strcmp(args[0], "del-header") == 0) {
9276 rule->action = HTTP_RES_ACT_DEL_HDR;
9277 cur_arg = 1;
9278
9279 if (!*args[cur_arg] ||
9280 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9281 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9282 file, linenum, args[0]);
9283 goto out_err;
9284 }
9285
9286 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9287 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9288
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9289 proxy->conf.args.ctx = ARGC_HRS;
9290 free(proxy->conf.lfs_file);
9291 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9292 proxy->conf.lfs_line = proxy->conf.args.line;
9293 cur_arg += 1;
9294 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9295 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9296 rule->action = HTTP_RES_ACT_ADD_ACL;
9297 /*
9298 * '+ 8' for 'add-acl('
9299 * '- 9' for 'add-acl(' + trailing ')'
9300 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9301 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9302
9303 cur_arg = 1;
9304
9305 if (!*args[cur_arg] ||
9306 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9307 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9308 file, linenum, args[0]);
9309 goto out_err;
9310 }
9311
9312 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9313 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9314 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9315 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9316 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9317 free(proxy->conf.lfs_file);
9318 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9319 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9320
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9321 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9322 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9323 /* http-response del-acl(<reference (acl name)>) <key pattern> */
9324 rule->action = HTTP_RES_ACT_DEL_ACL;
9325 /*
9326 * '+ 8' for 'del-acl('
9327 * '- 9' for 'del-acl(' + trailing ')'
9328 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9329 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9330
9331 cur_arg = 1;
9332
9333 if (!*args[cur_arg] ||
9334 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9335 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9336 file, linenum, args[0]);
9337 goto out_err;
9338 }
9339
9340 LIST_INIT(&rule->arg.map.key);
9341 proxy->conf.args.ctx = ARGC_HRS;
9342 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9343 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9344 file, linenum);
9345 free(proxy->conf.lfs_file);
9346 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9347 proxy->conf.lfs_line = proxy->conf.args.line;
9348 cur_arg += 1;
9349 } else if (strncmp(args[0], "del-map", 7) == 0) {
9350 /* http-response del-map(<reference (map name)>) <key pattern> */
9351 rule->action = HTTP_RES_ACT_DEL_MAP;
9352 /*
9353 * '+ 8' for 'del-map('
9354 * '- 9' for 'del-map(' + trailing ')'
9355 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9356 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9357
9358 cur_arg = 1;
9359
9360 if (!*args[cur_arg] ||
9361 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9362 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9363 file, linenum, args[0]);
9364 goto out_err;
9365 }
9366
9367 LIST_INIT(&rule->arg.map.key);
9368 proxy->conf.args.ctx = ARGC_HRS;
9369 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9370 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9371 file, linenum);
9372 free(proxy->conf.lfs_file);
9373 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9374 proxy->conf.lfs_line = proxy->conf.args.line;
9375 cur_arg += 1;
9376 } else if (strncmp(args[0], "set-map", 7) == 0) {
9377 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
9378 rule->action = HTTP_RES_ACT_SET_MAP;
9379 /*
9380 * '+ 8' for 'set-map('
9381 * '- 9' for 'set-map(' + trailing ')'
9382 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9383 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9384
9385 cur_arg = 1;
9386
9387 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9388 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9389 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9390 file, linenum, args[0]);
9391 goto out_err;
9392 }
9393
9394 LIST_INIT(&rule->arg.map.key);
9395 LIST_INIT(&rule->arg.map.value);
9396
9397 proxy->conf.args.ctx = ARGC_HRS;
9398
9399 /* key pattern */
9400 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9401 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9402 file, linenum);
9403
9404 /* value pattern */
9405 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9406 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9407 file, linenum);
9408
9409 free(proxy->conf.lfs_file);
9410 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9411 proxy->conf.lfs_line = proxy->conf.args.line;
9412
9413 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9414 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9415 char *errmsg = NULL;
9416 cur_arg = 1;
9417 /* try in the module list */
9418 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9419 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9420 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9421 free(errmsg);
9422 goto out_err;
9423 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9424 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9425 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]9426 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
9427 goto out_err;
9428 }
9429
9430 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9431 struct acl_cond *cond;
9432 char *errmsg = NULL;
9433
9434 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9435 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9436 file, linenum, args[0], errmsg);
9437 free(errmsg);
9438 goto out_err;
9439 }
9440 rule->cond = cond;
9441 }
9442 else if (*args[cur_arg]) {
9443 Alert("parsing [%s:%d]: 'http-response %s' expects"
9444 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9445 file, linenum, args[0], args[cur_arg]);
9446 goto out_err;
9447 }
9448
9449 return rule;
9450 out_err:
9451 free(rule);
9452 return NULL;
9453}
9454
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9455/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9456 * with <err> filled with the error message. If <use_fmt> is not null, builds a
9457 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9458 */
9459struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9460 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9461{
9462 struct redirect_rule *rule;
9463 int cur_arg;
9464 int type = REDIRECT_TYPE_NONE;
9465 int code = 302;
9466 const char *destination = NULL;
9467 const char *cookie = NULL;
9468 int cookie_set = 0;
9469 unsigned int flags = REDIRECT_FLAG_NONE;
9470 struct acl_cond *cond = NULL;
9471
9472 cur_arg = 0;
9473 while (*(args[cur_arg])) {
9474 if (strcmp(args[cur_arg], "location") == 0) {
9475 if (!*args[cur_arg + 1])
9476 goto missing_arg;
9477
9478 type = REDIRECT_TYPE_LOCATION;
9479 cur_arg++;
9480 destination = args[cur_arg];
9481 }
9482 else if (strcmp(args[cur_arg], "prefix") == 0) {
9483 if (!*args[cur_arg + 1])
9484 goto missing_arg;
9485
9486 type = REDIRECT_TYPE_PREFIX;
9487 cur_arg++;
9488 destination = args[cur_arg];
9489 }
9490 else if (strcmp(args[cur_arg], "scheme") == 0) {
9491 if (!*args[cur_arg + 1])
9492 goto missing_arg;
9493
9494 type = REDIRECT_TYPE_SCHEME;
9495 cur_arg++;
9496 destination = args[cur_arg];
9497 }
9498 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9499 if (!*args[cur_arg + 1])
9500 goto missing_arg;
9501
9502 cur_arg++;
9503 cookie = args[cur_arg];
9504 cookie_set = 1;
9505 }
9506 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9507 if (!*args[cur_arg + 1])
9508 goto missing_arg;
9509
9510 cur_arg++;
9511 cookie = args[cur_arg];
9512 cookie_set = 0;
9513 }
9514 else if (strcmp(args[cur_arg], "code") == 0) {
9515 if (!*args[cur_arg + 1])
9516 goto missing_arg;
9517
9518 cur_arg++;
9519 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9520 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9521 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9522 "'%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]9523 args[cur_arg - 1], args[cur_arg]);
9524 return NULL;
9525 }
9526 }
9527 else if (!strcmp(args[cur_arg],"drop-query")) {
9528 flags |= REDIRECT_FLAG_DROP_QS;
9529 }
9530 else if (!strcmp(args[cur_arg],"append-slash")) {
9531 flags |= REDIRECT_FLAG_APPEND_SLASH;
9532 }
9533 else if (strcmp(args[cur_arg], "if") == 0 ||
9534 strcmp(args[cur_arg], "unless") == 0) {
9535 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9536 if (!cond) {
9537 memprintf(errmsg, "error in condition: %s", *errmsg);
9538 return NULL;
9539 }
9540 break;
9541 }
9542 else {
9543 memprintf(errmsg,
9544 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9545 args[cur_arg]);
9546 return NULL;
9547 }
9548 cur_arg++;
9549 }
9550
9551 if (type == REDIRECT_TYPE_NONE) {
9552 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9553 return NULL;
9554 }
9555
9556 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
9557 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9558 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9559
9560 if (!use_fmt) {
9561 /* old-style static redirect rule */
9562 rule->rdr_str = strdup(destination);
9563 rule->rdr_len = strlen(destination);
9564 }
9565 else {
9566 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9567
9568 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
9569 * if prefix == "/", we don't want to add anything, otherwise it
9570 * makes it hard for the user to configure a self-redirection.
9571 */
Godbach543b9782014-12-18 15:44:58 +0800[diff] [blame]9572 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9573 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9574 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]9575 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9576 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9577 free(curproxy->conf.lfs_file);
9578 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
9579 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9580 }
9581 }
9582
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9583 if (cookie) {
9584 /* depending on cookie_set, either we want to set the cookie, or to clear it.
9585 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
9586 */
9587 rule->cookie_len = strlen(cookie);
9588 if (cookie_set) {
9589 rule->cookie_str = malloc(rule->cookie_len + 10);
9590 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9591 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
9592 rule->cookie_len += 9;
9593 } else {
9594 rule->cookie_str = malloc(rule->cookie_len + 21);
9595 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9596 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
9597 rule->cookie_len += 20;
9598 }
9599 }
9600 rule->type = type;
9601 rule->code = code;
9602 rule->flags = flags;
9603 LIST_INIT(&rule->list);
9604 return rule;
9605
9606 missing_arg:
9607 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9608 return NULL;
9609}
9610
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9611/************************************************************************/
9612/* The code below is dedicated to ACL parsing and matching */
9613/************************************************************************/
9614
9615
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9616/* This function ensures that the prerequisites for an L7 fetch are ready,
9617 * which means that a request or response is ready. If some data is missing,
9618 * 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]9619 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9620 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9621 *
9622 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9623 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9624 * decide whether or not an HTTP message is present ;
9625 * 0 if the requested data cannot be fetched or if it is certain that
9626 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9627 * 1 if an HTTP message is ready
9628 */
9629static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9630smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9631 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9632{
9633 struct http_txn *txn = l7;
9634 struct http_msg *msg = &txn->req;
9635
9636 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9637 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9638 */
9639
9640 if (unlikely(!s || !txn))
9641 return 0;
9642
9643 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9644 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9645
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9646 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9647 if (unlikely(!s->req))
9648 return 0;
9649
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9650 /* If the buffer does not leave enough free space at the end,
9651 * we must first realign it.
9652 */
9653 if (s->req->buf->p > s->req->buf->data &&
9654 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
9655 buffer_slow_realign(s->req->buf);
9656
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9657 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9658 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9659 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9660
9661 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9662 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9663 http_msg_analyzer(msg, &txn->hdr_idx);
9664
9665 /* Still no valid request ? */
9666 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9667 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9668 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9669 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9670 }
9671 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9672 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9673 return 0;
9674 }
9675
9676 /* OK we just got a valid HTTP request. We have some minor
9677 * preparation to perform so that further checks can rely
9678 * on HTTP tests.
9679 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9680
9681 /* If the request was parsed but was too large, we must absolutely
9682 * return an error so that it is not processed. At the moment this
9683 * cannot happen, but if the parsers are to change in the future,
9684 * we want this check to be maintained.
9685 */
9686 if (unlikely(s->req->buf->i + s->req->buf->p >
9687 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
9688 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9689 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9690 return 1;
9691 }
9692
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9693 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9694 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
9695 s->flags |= SN_REDIRECTABLE;
9696
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9697 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
9698 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9699 }
9700
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9701 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9702 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9703 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9704
9705 /* otherwise everything's ready for the request */
9706 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9707 else {
9708 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9709 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
9710 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9711 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9712 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9713 }
9714
9715 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9716 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9717 return 1;
9718}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9719
Willy Tarreaua4ba9db2014-06-25 16:56:41 +0200[diff] [blame]9720/* Note: these functinos *do* modify the sample. Even in case of success, at
9721 * least the type and uint value are modified.
9722 */
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9723#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9724 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]9725
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9726#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9727 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]9728
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9729
9730/* 1. Check on METHOD
9731 * We use the pre-parsed method if it is known, and store its number as an
9732 * integer. If it is unknown, we use the pointer and the length.
9733 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9734static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9735{
9736 int len, meth;
9737
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]9738 len = strlen(text);
9739 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9740
9741 pattern->val.i = meth;
9742 if (meth == HTTP_METH_OTHER) {
Willy Tarreau71196f32014-08-29 15:15:50 +0200[diff] [blame]9743 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9744 pattern->len = len;
9745 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9746 else {
9747 pattern->ptr.str = NULL;
9748 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9749 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9750 return 1;
9751}
9752
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9753/* This function fetches the method of current HTTP request and stores
9754 * it in the global pattern struct as a chunk. There are two possibilities :
9755 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
9756 * in <len> and <ptr> is NULL ;
9757 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
9758 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9759 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9760 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9761static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9762smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9763 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9764{
9765 int meth;
9766 struct http_txn *txn = l7;
9767
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9768 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9769
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9770 meth = txn->meth;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9771 smp->type = SMP_T_METH;
9772 smp->data.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9773 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9774 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
9775 /* ensure the indexes are not affected */
9776 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9777 smp->flags |= SMP_F_CONST;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9778 smp->data.meth.str.len = txn->req.sl.rq.m_l;
9779 smp->data.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9780 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9781 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9782 return 1;
9783}
9784
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9785/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9786static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9787{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9788 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9789 struct pattern_list *lst;
9790 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9791
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9792 list_for_each_entry(lst, &expr->patterns, list) {
9793 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9794
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9795 /* well-known method */
9796 if (pattern->val.i != HTTP_METH_OTHER) {
9797 if (smp->data.meth.meth == pattern->val.i)
9798 return pattern;
9799 else
9800 continue;
9801 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9802
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9803 /* Other method, we must compare the strings */
9804 if (pattern->len != smp->data.meth.str.len)
9805 continue;
9806
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9807 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Willy Tarreauc62a0c62014-08-28 20:42:57 +0200[diff] [blame]9808 if ((icase && strncasecmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0) ||
9809 (!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]9810 return pattern;
9811 }
9812 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9813}
9814
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9815static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9816smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9817 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9818{
9819 struct http_txn *txn = l7;
9820 char *ptr;
9821 int len;
9822
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9823 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9824
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9825 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9826 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9827
9828 while ((len-- > 0) && (*ptr++ != '/'));
9829 if (len <= 0)
9830 return 0;
9831
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9832 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9833 smp->data.str.str = ptr;
9834 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9835
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9836 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9837 return 1;
9838}
9839
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9840static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9841smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9842 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9843{
9844 struct http_txn *txn = l7;
9845 char *ptr;
9846 int len;
9847
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9848 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9849
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9850 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9851 return 0;
9852
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9853 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9854 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9855
9856 while ((len-- > 0) && (*ptr++ != '/'));
9857 if (len <= 0)
9858 return 0;
9859
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9860 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9861 smp->data.str.str = ptr;
9862 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9863
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9864 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9865 return 1;
9866}
9867
9868/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9869static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9870smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9871 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9872{
9873 struct http_txn *txn = l7;
9874 char *ptr;
9875 int len;
9876
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9877 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9878
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9879 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9880 return 0;
9881
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9882 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9883 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9884
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9885 smp->type = SMP_T_UINT;
9886 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9887 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9888 return 1;
9889}
9890
9891/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9892static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9893smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9894 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9895{
9896 struct http_txn *txn = l7;
9897
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9898 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9899
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9900 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9901 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9902 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9903 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9904 return 1;
9905}
9906
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9907static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9908smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9909 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9910{
9911 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9912 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9913
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9914 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9915
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]9916 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]9917 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]9918 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9919
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9920 smp->type = SMP_T_IPV4;
9921 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9922 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9923 return 1;
9924}
9925
9926static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9927smp_fetch_url_port(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)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9929{
9930 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9931 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9932
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9933 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9934
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]9935 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]9936 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
9937 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9938
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9939 smp->type = SMP_T_UINT;
9940 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]9941 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9942 return 1;
9943}
9944
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9945/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9946 * Accepts an optional argument of type string containing the header field name,
9947 * and an optional argument of type signed or unsigned integer to request an
9948 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9949 * headers are considered from the first one. It does not stop on commas and
9950 * returns full lines instead (useful for User-Agent or Date for example).
9951 */
9952static int
9953smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9954 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9955{
9956 struct http_txn *txn = l7;
9957 struct hdr_idx *idx = &txn->hdr_idx;
9958 struct hdr_ctx *ctx = smp->ctx.a[0];
9959 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9960 int occ = 0;
9961 const char *name_str = NULL;
9962 int name_len = 0;
9963
9964 if (!ctx) {
9965 /* first call */
9966 ctx = &static_hdr_ctx;
9967 ctx->idx = 0;
9968 smp->ctx.a[0] = ctx;
9969 }
9970
9971 if (args) {
9972 if (args[0].type != ARGT_STR)
9973 return 0;
9974 name_str = args[0].data.str.str;
9975 name_len = args[0].data.str.len;
9976
9977 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9978 occ = args[1].data.uint;
9979 }
9980
9981 CHECK_HTTP_MESSAGE_FIRST();
9982
9983 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
9984 /* search for header from the beginning */
9985 ctx->idx = 0;
9986
9987 if (!occ && !(opt & SMP_OPT_ITERATE))
9988 /* no explicit occurrence and single fetch => last header by default */
9989 occ = -1;
9990
9991 if (!occ)
9992 /* prepare to report multiple occurrences for ACL fetches */
9993 smp->flags |= SMP_F_NOT_LAST;
9994
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9995 smp->type = SMP_T_STR;
9996 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9997 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
9998 return 1;
9999
10000 smp->flags &= ~SMP_F_NOT_LAST;
10001 return 0;
10002}
10003
10004/* 6. Check on HTTP header count. The number of occurrences is returned.
10005 * Accepts exactly 1 argument of type string. It does not stop on commas and
10006 * returns full lines instead (useful for User-Agent or Date for example).
10007 */
10008static int
10009smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10010 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10011{
10012 struct http_txn *txn = l7;
10013 struct hdr_idx *idx = &txn->hdr_idx;
10014 struct hdr_ctx ctx;
10015 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
10016 int cnt;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame^]10017 const char *name = NULL;
10018 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10019
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame^]10020 if (args && args->type == ARGT_STR) {
10021 name = args->data.str.str;
10022 len = args->data.str.len;
10023 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10024
10025 CHECK_HTTP_MESSAGE_FIRST();
10026
10027 ctx.idx = 0;
10028 cnt = 0;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame^]10029 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10030 cnt++;
10031
10032 smp->type = SMP_T_UINT;
10033 smp->data.uint = cnt;
10034 smp->flags = SMP_F_VOL_HDR;
10035 return 1;
10036}
10037
10038/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10039 * Accepts an optional argument of type string containing the header field name,
10040 * and an optional argument of type signed or unsigned integer to request an
10041 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10042 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10043 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10044static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10045smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10046 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10047{
10048 struct http_txn *txn = l7;
10049 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10050 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10051 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]10052 int occ = 0;
10053 const char *name_str = NULL;
10054 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10055
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10056 if (!ctx) {
10057 /* first call */
10058 ctx = &static_hdr_ctx;
10059 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10060 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10061 }
10062
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10063 if (args) {
10064 if (args[0].type != ARGT_STR)
10065 return 0;
10066 name_str = args[0].data.str.str;
10067 name_len = args[0].data.str.len;
10068
10069 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10070 occ = args[1].data.uint;
10071 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10072
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10073 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10074
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10075 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10076 /* search for header from the beginning */
10077 ctx->idx = 0;
10078
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10079 if (!occ && !(opt & SMP_OPT_ITERATE))
10080 /* no explicit occurrence and single fetch => last header by default */
10081 occ = -1;
10082
10083 if (!occ)
10084 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10085 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10086
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10087 smp->type = SMP_T_STR;
10088 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10089 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]10090 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10091
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10092 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10093 return 0;
10094}
10095
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10096/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10097 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10098 */
10099static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10100smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10101 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10102{
10103 struct http_txn *txn = l7;
10104 struct hdr_idx *idx = &txn->hdr_idx;
10105 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10106 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]10107 int cnt;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame^]10108 const char *name = NULL;
10109 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10110
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame^]10111 if (args && args->type == ARGT_STR) {
10112 name = args->data.str.str;
10113 len = args->data.str.len;
10114 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10115
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10116 CHECK_HTTP_MESSAGE_FIRST();
10117
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10118 ctx.idx = 0;
10119 cnt = 0;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame^]10120 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10121 cnt++;
10122
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10123 smp->type = SMP_T_UINT;
10124 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10125 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10126 return 1;
10127}
10128
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10129/* Fetch an HTTP header's integer value. The integer value is returned. It
10130 * takes a mandatory argument of type string and an optional one of type int
10131 * to designate a specific occurrence. It returns an unsigned integer, which
10132 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10133 */
10134static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10135smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10136 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10137{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10138 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10139
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10140 if (ret > 0) {
10141 smp->type = SMP_T_UINT;
10142 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10143 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10144
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10145 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10146}
10147
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10148/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10149 * and an optional one of type int to designate a specific occurrence.
10150 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10151 */
10152static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10153smp_fetch_hdr_ip(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 Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10155{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10156 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10157
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10158 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10159 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
10160 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10161 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10162 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10163 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10164 if (smp->data.str.len < temp->size - 1) {
10165 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
10166 temp->str[smp->data.str.len] = '\0';
10167 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
10168 smp->type = SMP_T_IPV6;
10169 break;
10170 }
10171 }
10172 }
10173
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10174 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10175 if (!(smp->flags & SMP_F_NOT_LAST))
10176 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10177 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10178 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10179}
10180
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10181/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10182 * the first '/' after the possible hostname, and ends before the possible '?'.
10183 */
10184static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10185smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10186 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10187{
10188 struct http_txn *txn = l7;
10189 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10190
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10191 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10192
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10193 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]10194 ptr = http_get_path(txn);
10195 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10196 return 0;
10197
10198 /* OK, we got the '/' ! */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10199 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10200 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10201
10202 while (ptr < end && *ptr != '?')
10203 ptr++;
10204
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10205 smp->data.str.len = ptr - smp->data.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10206 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10207 return 1;
10208}
10209
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10210/* This produces a concatenation of the first occurrence of the Host header
10211 * followed by the path component if it begins with a slash ('/'). This means
10212 * that '*' will not be added, resulting in exactly the first Host entry.
10213 * If no Host header is found, then the path is returned as-is. The returned
10214 * 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]10215 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10216 */
10217static int
10218smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10219 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10220{
10221 struct http_txn *txn = l7;
10222 char *ptr, *end, *beg;
10223 struct hdr_ctx ctx;
Willy Tarreauc1fbbd42014-06-24 17:27:02 +0200[diff] [blame]10224 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10225
10226 CHECK_HTTP_MESSAGE_FIRST();
10227
10228 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10229 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]10230 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10231
10232 /* 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]10233 temp = get_trash_chunk();
10234 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10235 smp->type = SMP_T_STR;
Willy Tarreauc1fbbd42014-06-24 17:27:02 +0200[diff] [blame]10236 smp->data.str.str = temp->str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10237 smp->data.str.len = ctx.vlen;
10238
10239 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10240 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]10241 beg = http_get_path(txn);
10242 if (!beg)
10243 beg = end;
10244
10245 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10246
10247 if (beg < ptr && *beg == '/') {
10248 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
10249 smp->data.str.len += ptr - beg;
10250 }
10251
10252 smp->flags = SMP_F_VOL_1ST;
10253 return 1;
10254}
10255
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10256/* This produces a 32-bit hash of the concatenation of the first occurrence of
10257 * the Host header followed by the path component if it begins with a slash ('/').
10258 * This means that '*' will not be added, resulting in exactly the first Host
10259 * 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]10260 * is hashed using the path hash followed by a full avalanche hash and provides a
10261 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10262 * high-traffic sites without having to store whole paths.
10263 */
10264static int
10265smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10266 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10267{
10268 struct http_txn *txn = l7;
10269 struct hdr_ctx ctx;
10270 unsigned int hash = 0;
10271 char *ptr, *beg, *end;
10272 int len;
10273
10274 CHECK_HTTP_MESSAGE_FIRST();
10275
10276 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10277 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]10278 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10279 ptr = ctx.line + ctx.val;
10280 len = ctx.vlen;
10281 while (len--)
10282 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10283 }
10284
10285 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10286 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]10287 beg = http_get_path(txn);
10288 if (!beg)
10289 beg = end;
10290
10291 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10292
10293 if (beg < ptr && *beg == '/') {
10294 while (beg < ptr)
10295 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10296 }
10297 hash = full_hash(hash);
10298
10299 smp->type = SMP_T_UINT;
10300 smp->data.uint = hash;
10301 smp->flags = SMP_F_VOL_1ST;
10302 return 1;
10303}
10304
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10305/* 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]10306 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10307 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10308 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10309 * that in environments where IPv6 is insignificant, truncating the output to
10310 * 8 bytes would still work.
10311 */
10312static int
10313smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10314 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10315{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10316 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10317 struct connection *cli_conn = objt_conn(l4->si[0].end);
10318
10319 if (!cli_conn)
10320 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10321
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10322 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10323 return 0;
10324
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10325 temp = get_trash_chunk();
Willy Tarreau0dff81c2014-07-15 21:34:06 +0200[diff] [blame]10326 *(unsigned int *)temp->str = htonl(smp->data.uint);
10327 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10328
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10329 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10330 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10331 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]10332 temp->len += 4;
10333 break;
10334 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10335 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]10336 temp->len += 16;
10337 break;
10338 default:
10339 return 0;
10340 }
10341
10342 smp->data.str = *temp;
10343 smp->type = SMP_T_BIN;
10344 return 1;
10345}
10346
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10347static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10348smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10349 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10350{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10351 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10352 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10353 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10354
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10355 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10356
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10357 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10358 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10359 return 1;
10360}
10361
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10362/* return a valid test if the current request is the first one on the connection */
10363static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10364smp_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]10365 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10366{
10367 if (!s)
10368 return 0;
10369
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10370 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10371 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10372 return 1;
10373}
10374
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10375/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10376static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10377smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10378 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10379{
10380
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10381 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10382 return 0;
10383
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10384 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10385
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10386 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10387 return 0;
10388
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10389 smp->type = SMP_T_BOOL;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10390 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]10391 return 1;
10392}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10393
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10394/* Accepts exactly 1 argument of type userlist */
10395static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10396smp_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]10397 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10398{
10399
10400 if (!args || args->type != ARGT_USR)
10401 return 0;
10402
10403 CHECK_HTTP_MESSAGE_FIRST();
10404
10405 if (!get_http_auth(l4))
10406 return 0;
10407
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10408 /* if the user does not belong to the userlist or has a wrong password,
10409 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10410 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10411 */
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10412 if (!check_user(args->data.usr, l4->txn.auth.user, l4->txn.auth.pass))
10413 return 0;
10414
10415 /* pat_match_auth() will need the user list */
10416 smp->ctx.a[0] = args->data.usr;
10417
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10418 smp->type = SMP_T_STR;
10419 smp->flags = SMP_F_CONST;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10420 smp->data.str.str = l4->txn.auth.user;
10421 smp->data.str.len = strlen(l4->txn.auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10422
10423 return 1;
10424}
10425
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10426/* Try to find the next occurrence of a cookie name in a cookie header value.
10427 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10428 * the cookie value is returned into *value and *value_l, and the function
10429 * returns a pointer to the next pointer to search from if the value was found.
10430 * Otherwise if the cookie was not found, NULL is returned and neither value
10431 * nor value_l are touched. The input <hdr> string should first point to the
10432 * header's value, and the <hdr_end> pointer must point to the first character
10433 * not part of the value. <list> must be non-zero if value may represent a list
10434 * of values (cookie headers). This makes it faster to abort parsing when no
10435 * list is expected.
10436 */
10437static char *
10438extract_cookie_value(char *hdr, const char *hdr_end,
10439 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10440 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10441{
10442 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10443 char *next;
10444
10445 /* we search at least a cookie name followed by an equal, and more
10446 * generally something like this :
10447 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
10448 */
10449 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
10450 /* Iterate through all cookies on this line */
10451
10452 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
10453 att_beg++;
10454
10455 /* find att_end : this is the first character after the last non
10456 * space before the equal. It may be equal to hdr_end.
10457 */
10458 equal = att_end = att_beg;
10459
10460 while (equal < hdr_end) {
10461 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
10462 break;
10463 if (http_is_spht[(unsigned char)*equal++])
10464 continue;
10465 att_end = equal;
10466 }
10467
10468 /* here, <equal> points to '=', a delimitor or the end. <att_end>
10469 * is between <att_beg> and <equal>, both may be identical.
10470 */
10471
10472 /* look for end of cookie if there is an equal sign */
10473 if (equal < hdr_end && *equal == '=') {
10474 /* look for the beginning of the value */
10475 val_beg = equal + 1;
10476 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
10477 val_beg++;
10478
10479 /* find the end of the value, respecting quotes */
10480 next = find_cookie_value_end(val_beg, hdr_end);
10481
10482 /* make val_end point to the first white space or delimitor after the value */
10483 val_end = next;
10484 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
10485 val_end--;
10486 } else {
10487 val_beg = val_end = next = equal;
10488 }
10489
10490 /* We have nothing to do with attributes beginning with '$'. However,
10491 * they will automatically be removed if a header before them is removed,
10492 * since they're supposed to be linked together.
10493 */
10494 if (*att_beg == '$')
10495 continue;
10496
10497 /* Ignore cookies with no equal sign */
10498 if (equal == next)
10499 continue;
10500
10501 /* Now we have the cookie name between att_beg and att_end, and
10502 * its value between val_beg and val_end.
10503 */
10504
10505 if (att_end - att_beg == cookie_name_l &&
10506 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
10507 /* let's return this value and indicate where to go on from */
10508 *value = val_beg;
10509 *value_l = val_end - val_beg;
10510 return next + 1;
10511 }
10512
10513 /* Set-Cookie headers only have the name in the first attr=value part */
10514 if (!list)
10515 break;
10516 }
10517
10518 return NULL;
10519}
10520
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10521/* Fetch a captured HTTP request header. The index is the position of
10522 * the "capture" option in the configuration file
10523 */
10524static int
10525smp_fetch_capture_header_req(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10526 const struct arg *args, struct sample *smp, const char *kw)
10527{
10528 struct proxy *fe = l4->fe;
10529 struct http_txn *txn = l7;
10530 int idx;
10531
10532 if (!args || args->type != ARGT_UINT)
10533 return 0;
10534
10535 idx = args->data.uint;
10536
10537 if (idx > (fe->nb_req_cap - 1) || txn->req.cap == NULL || txn->req.cap[idx] == NULL)
10538 return 0;
10539
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10540 smp->type = SMP_T_STR;
10541 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10542 smp->data.str.str = txn->req.cap[idx];
10543 smp->data.str.len = strlen(txn->req.cap[idx]);
10544
10545 return 1;
10546}
10547
10548/* Fetch a captured HTTP response header. The index is the position of
10549 * the "capture" option in the configuration file
10550 */
10551static int
10552smp_fetch_capture_header_res(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10553 const struct arg *args, struct sample *smp, const char *kw)
10554{
10555 struct proxy *fe = l4->fe;
10556 struct http_txn *txn = l7;
10557 int idx;
10558
10559 if (!args || args->type != ARGT_UINT)
10560 return 0;
10561
10562 idx = args->data.uint;
10563
10564 if (idx > (fe->nb_rsp_cap - 1) || txn->rsp.cap == NULL || txn->rsp.cap[idx] == NULL)
10565 return 0;
10566
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10567 smp->type = SMP_T_STR;
10568 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10569 smp->data.str.str = txn->rsp.cap[idx];
10570 smp->data.str.len = strlen(txn->rsp.cap[idx]);
10571
10572 return 1;
10573}
10574
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10575/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
10576static int
10577smp_fetch_capture_req_method(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10578 const struct arg *args, struct sample *smp, const char *kw)
10579{
10580 struct chunk *temp;
10581 struct http_txn *txn = l7;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10582 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10583
10584 if (!txn->uri)
10585 return 0;
10586
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10587 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10588
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10589 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10590 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10591
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10592 temp = get_trash_chunk();
10593 temp->str = txn->uri;
10594 temp->len = ptr - txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10595 smp->data.str = *temp;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10596 smp->type = SMP_T_STR;
10597 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10598
10599 return 1;
10600
10601}
10602
10603/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
10604static int
10605smp_fetch_capture_req_uri(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10606 const struct arg *args, struct sample *smp, const char *kw)
10607{
10608 struct chunk *temp;
10609 struct http_txn *txn = l7;
10610 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10611
10612 if (!txn->uri)
10613 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10614
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10615 ptr = txn->uri;
10616
10617 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10618 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10619
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10620 if (!*ptr)
10621 return 0;
10622
10623 ptr++; /* skip the space */
10624
10625 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10626 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10627 if (!ptr)
10628 return 0;
10629 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
10630 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10631
10632 smp->data.str = *temp;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10633 smp->data.str.len = ptr - temp->str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10634 smp->type = SMP_T_STR;
10635 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10636
10637 return 1;
10638}
10639
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10640/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
10641 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10642 */
10643static int
10644smp_fetch_capture_req_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10645 const struct arg *args, struct sample *smp, const char *kw)
10646{
10647 struct http_txn *txn = l7;
10648
10649 if (txn->req.msg_state < HTTP_MSG_HDR_FIRST)
10650 return 0;
10651
10652 if (txn->req.flags & HTTP_MSGF_VER_11)
10653 smp->data.str.str = "HTTP/1.1";
10654 else
10655 smp->data.str.str = "HTTP/1.0";
10656
10657 smp->data.str.len = 8;
10658 smp->type = SMP_T_STR;
10659 smp->flags = SMP_F_CONST;
10660 return 1;
10661
10662}
10663
10664/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
10665 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10666 */
10667static int
10668smp_fetch_capture_res_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10669 const struct arg *args, struct sample *smp, const char *kw)
10670{
10671 struct http_txn *txn = l7;
10672
10673 if (txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
10674 return 0;
10675
10676 if (txn->rsp.flags & HTTP_MSGF_VER_11)
10677 smp->data.str.str = "HTTP/1.1";
10678 else
10679 smp->data.str.str = "HTTP/1.0";
10680
10681 smp->data.str.len = 8;
10682 smp->type = SMP_T_STR;
10683 smp->flags = SMP_F_CONST;
10684 return 1;
10685
10686}
10687
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10688
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10689/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10690 * 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]10691 * 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]10692 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10693 * 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]10694 * Accepts exactly 1 argument of type string. If the input options indicate
10695 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10696 * The returned sample is of type CSTR. Can be used to parse cookies in other
10697 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10698 */
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10699int smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10700 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10701{
10702 struct http_txn *txn = l7;
10703 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10704 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10705 const struct http_msg *msg;
10706 const char *hdr_name;
10707 int hdr_name_len;
10708 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10709 int occ = 0;
10710 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10711
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10712 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10713 return 0;
10714
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10715 if (!ctx) {
10716 /* first call */
10717 ctx = &static_hdr_ctx;
10718 ctx->idx = 0;
10719 smp->ctx.a[2] = ctx;
10720 }
10721
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10722 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10723
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10724 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10725 msg = &txn->req;
10726 hdr_name = "Cookie";
10727 hdr_name_len = 6;
10728 } else {
10729 msg = &txn->rsp;
10730 hdr_name = "Set-Cookie";
10731 hdr_name_len = 10;
10732 }
10733
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10734 if (!occ && !(opt & SMP_OPT_ITERATE))
10735 /* no explicit occurrence and single fetch => last cookie by default */
10736 occ = -1;
10737
10738 /* OK so basically here, either we want only one value and it's the
10739 * last one, or we want to iterate over all of them and we fetch the
10740 * next one.
10741 */
10742
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10743 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10744 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10745 /* search for the header from the beginning, we must first initialize
10746 * the search parameters.
10747 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10748 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10749 ctx->idx = 0;
10750 }
10751
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10752 smp->flags |= SMP_F_VOL_HDR;
10753
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10754 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10755 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
10756 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10757 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
10758 goto out;
10759
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10760 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10761 continue;
10762
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10763 smp->ctx.a[0] = ctx->line + ctx->val;
10764 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10765 }
10766
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10767 smp->type = SMP_T_STR;
10768 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10769 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]10770 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10771 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10772 &smp->data.str.str,
10773 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10774 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10775 found = 1;
10776 if (occ >= 0) {
10777 /* one value was returned into smp->data.str.{str,len} */
10778 smp->flags |= SMP_F_NOT_LAST;
10779 return 1;
10780 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10781 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10782 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10783 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10784 /* all cookie headers and values were scanned. If we're looking for the
10785 * last occurrence, we may return it now.
10786 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10787 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10788 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10789 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10790}
10791
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10792/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10793 * 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]10794 * multiple cookies may be parsed on the same line. The returned sample is of
10795 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10796 */
10797static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10798smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10799 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10800{
10801 struct http_txn *txn = l7;
10802 struct hdr_idx *idx = &txn->hdr_idx;
10803 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10804 const struct http_msg *msg;
10805 const char *hdr_name;
10806 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10807 int cnt;
10808 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10809 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10810
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10811 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10812 return 0;
10813
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10814 CHECK_HTTP_MESSAGE_FIRST();
10815
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10816 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10817 msg = &txn->req;
10818 hdr_name = "Cookie";
10819 hdr_name_len = 6;
10820 } else {
10821 msg = &txn->rsp;
10822 hdr_name = "Set-Cookie";
10823 hdr_name_len = 10;
10824 }
10825
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10826 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]10827 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10828 ctx.idx = 0;
10829 cnt = 0;
10830
10831 while (1) {
10832 /* Note: val_beg == NULL every time we need to fetch a new header */
10833 if (!val_beg) {
10834 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
10835 break;
10836
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10837 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10838 continue;
10839
10840 val_beg = ctx.line + ctx.val;
10841 val_end = val_beg + ctx.vlen;
10842 }
10843
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10844 smp->type = SMP_T_STR;
10845 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10846 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10847 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10848 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10849 &smp->data.str.str,
10850 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10851 cnt++;
10852 }
10853 }
10854
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]10855 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10856 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10857 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10858 return 1;
10859}
10860
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10861/* Fetch an cookie's integer value. The integer value is returned. It
10862 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
10863 */
10864static int
10865smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10866 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10867{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10868 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10869
10870 if (ret > 0) {
10871 smp->type = SMP_T_UINT;
10872 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10873 }
10874
10875 return ret;
10876}
10877
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10878/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10879/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10880/************************************************************************/
10881
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10882/*
10883 * Given a path string and its length, find the position of beginning of the
10884 * query string. Returns NULL if no query string is found in the path.
10885 *
10886 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
10887 *
10888 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
10889 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10890static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10891{
10892 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]10893
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10894 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10895 return p ? p + 1 : NULL;
10896}
10897
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10898static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10899{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10900 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10901}
10902
10903/*
10904 * Given a url parameter, find the starting position of the first occurence,
10905 * or NULL if the parameter is not found.
10906 *
10907 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
10908 * the function will return query_string+8.
10909 */
10910static char*
10911find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10912 char* url_param_name, size_t url_param_name_l,
10913 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10914{
10915 char *pos, *last;
10916
10917 pos = query_string;
10918 last = query_string + query_string_l - url_param_name_l - 1;
10919
10920 while (pos <= last) {
10921 if (pos[url_param_name_l] == '=') {
10922 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
10923 return pos;
10924 pos += url_param_name_l + 1;
10925 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10926 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10927 pos++;
10928 pos++;
10929 }
10930 return NULL;
10931}
10932
10933/*
10934 * Given a url parameter name, returns its value and size into *value and
10935 * *value_l respectively, and returns non-zero. If the parameter is not found,
10936 * zero is returned and value/value_l are not touched.
10937 */
10938static int
10939find_url_param_value(char* path, size_t path_l,
10940 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10941 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10942{
10943 char *query_string, *qs_end;
10944 char *arg_start;
10945 char *value_start, *value_end;
10946
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10947 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10948 if (!query_string)
10949 return 0;
10950
10951 qs_end = path + path_l;
10952 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10953 url_param_name, url_param_name_l,
10954 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10955 if (!arg_start)
10956 return 0;
10957
10958 value_start = arg_start + url_param_name_l + 1;
10959 value_end = value_start;
10960
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10961 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10962 value_end++;
10963
10964 *value = value_start;
10965 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]10966 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10967}
10968
10969static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10970smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10971 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10972{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10973 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10974 struct http_txn *txn = l7;
10975 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10976
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10977 if (!args || args[0].type != ARGT_STR ||
10978 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10979 return 0;
10980
10981 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10982
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10983 if (args[1].type)
10984 delim = *args[1].data.str.str;
10985
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10986 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]10987 args->data.str.str, args->data.str.len,
10988 &smp->data.str.str, &smp->data.str.len,
10989 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10990 return 0;
10991
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10992 smp->type = SMP_T_STR;
10993 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10994 return 1;
10995}
10996
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]10997/* Return the signed integer value for the specified url parameter (see url_param
10998 * above).
10999 */
11000static int
11001smp_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]11002 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11003{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11004 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11005
11006 if (ret > 0) {
11007 smp->type = SMP_T_UINT;
11008 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11009 }
11010
11011 return ret;
11012}
11013
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11014/* This produces a 32-bit hash of the concatenation of the first occurrence of
11015 * the Host header followed by the path component if it begins with a slash ('/').
11016 * This means that '*' will not be added, resulting in exactly the first Host
11017 * entry. If no Host header is found, then the path is used. The resulting value
11018 * is hashed using the url hash followed by a full avalanche hash and provides a
11019 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11020 * high-traffic sites without having to store whole paths.
11021 * this differs from the base32 functions in that it includes the url parameters
11022 * as well as the path
11023 */
11024static int
11025smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11026 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11027{
11028 struct http_txn *txn = l7;
11029 struct hdr_ctx ctx;
11030 unsigned int hash = 0;
11031 char *ptr, *beg, *end;
11032 int len;
11033
11034 CHECK_HTTP_MESSAGE_FIRST();
11035
11036 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11037 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]11038 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11039 ptr = ctx.line + ctx.val;
11040 len = ctx.vlen;
11041 while (len--)
11042 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11043 }
11044
11045 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11046 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]11047 beg = http_get_path(txn);
11048 if (!beg)
11049 beg = end;
11050
11051 for (ptr = beg; ptr < end ; ptr++);
11052
11053 if (beg < ptr && *beg == '/') {
11054 while (beg < ptr)
11055 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11056 }
11057 hash = full_hash(hash);
11058
11059 smp->type = SMP_T_UINT;
11060 smp->data.uint = hash;
11061 smp->flags = SMP_F_VOL_1ST;
11062 return 1;
11063}
11064
11065/* This concatenates the source address with the 32-bit hash of the Host and
11066 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11067 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11068 * on the source address length. The URL hash is stored before the address so
11069 * that in environments where IPv6 is insignificant, truncating the output to
11070 * 8 bytes would still work.
11071 */
11072static int
11073smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11074 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11075{
11076 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11077 struct connection *cli_conn = objt_conn(l4->si[0].end);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11078
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11079 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11080 return 0;
11081
11082 temp = get_trash_chunk();
11083 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
11084 temp->len += sizeof(smp->data.uint);
11085
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11086 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11087 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11088 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]11089 temp->len += 4;
11090 break;
11091 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11092 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]11093 temp->len += 16;
11094 break;
11095 default:
11096 return 0;
11097 }
11098
11099 smp->data.str = *temp;
11100 smp->type = SMP_T_BIN;
11101 return 1;
11102}
11103
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11104/* This function is used to validate the arguments passed to any "hdr" fetch
11105 * keyword. These keywords support an optional positive or negative occurrence
11106 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11107 * is assumed that the types are already the correct ones. Returns 0 on error,
11108 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11109 * error message in case of error, that the caller is responsible for freeing.
11110 * The initial location must either be freeable or NULL.
11111 */
11112static int val_hdr(struct arg *arg, char **err_msg)
11113{
11114 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11115 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11116 return 0;
11117 }
11118 return 1;
11119}
11120
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11121/* takes an UINT value on input supposed to represent the time since EPOCH,
11122 * adds an optional offset found in args[0] and emits a string representing
11123 * the date in RFC-1123/5322 format.
11124 */
11125static int sample_conv_http_date(const struct arg *args, struct sample *smp)
11126{
11127 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
11128 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11129 struct chunk *temp;
11130 struct tm *tm;
11131 time_t curr_date = smp->data.uint;
11132
11133 /* add offset */
11134 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
11135 curr_date += args[0].data.sint;
11136
11137 tm = gmtime(&curr_date);
11138
11139 temp = get_trash_chunk();
11140 temp->len = snprintf(temp->str, temp->size - temp->len,
11141 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11142 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11143 tm->tm_hour, tm->tm_min, tm->tm_sec);
11144
11145 smp->data.str = *temp;
11146 smp->type = SMP_T_STR;
11147 return 1;
11148}
11149
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11150/* Match language range with language tag. RFC2616 14.4:
11151 *
11152 * A language-range matches a language-tag if it exactly equals
11153 * the tag, or if it exactly equals a prefix of the tag such
11154 * that the first tag character following the prefix is "-".
11155 *
11156 * Return 1 if the strings match, else return 0.
11157 */
11158static inline int language_range_match(const char *range, int range_len,
11159 const char *tag, int tag_len)
11160{
11161 const char *end = range + range_len;
11162 const char *tend = tag + tag_len;
11163 while (range < end) {
11164 if (*range == '-' && tag == tend)
11165 return 1;
11166 if (*range != *tag || tag == tend)
11167 return 0;
11168 range++;
11169 tag++;
11170 }
11171 /* Return true only if the last char of the tag is matched. */
11172 return tag == tend;
11173}
11174
11175/* Arguments: The list of expected value, the number of parts returned and the separator */
11176static int sample_conv_q_prefered(const struct arg *args, struct sample *smp)
11177{
11178 const char *al = smp->data.str.str;
11179 const char *end = al + smp->data.str.len;
11180 const char *token;
11181 int toklen;
11182 int qvalue;
11183 const char *str;
11184 const char *w;
11185 int best_q = 0;
11186
11187 /* Set the constant to the sample, because the output of the
11188 * function will be peek in the constant configuration string.
11189 */
11190 smp->flags |= SMP_F_CONST;
11191 smp->data.str.size = 0;
11192 smp->data.str.str = "";
11193 smp->data.str.len = 0;
11194
11195 /* Parse the accept language */
11196 while (1) {
11197
11198 /* Jump spaces, quit if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11199 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11200 al++;
11201 if (al >= end)
11202 break;
11203
11204 /* Start of the fisrt word. */
11205 token = al;
11206
11207 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11208 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11209 al++;
11210 if (al == token)
11211 goto expect_comma;
11212
11213 /* Length of the token. */
11214 toklen = al - token;
11215 qvalue = 1000;
11216
11217 /* Check if the token exists in the list. If the token not exists,
11218 * jump to the next token.
11219 */
11220 str = args[0].data.str.str;
11221 w = str;
11222 while (1) {
11223 if (*str == ';' || *str == '\0') {
11224 if (language_range_match(token, toklen, w, str-w))
11225 goto look_for_q;
11226 if (*str == '\0')
11227 goto expect_comma;
11228 w = str + 1;
11229 }
11230 str++;
11231 }
11232 goto expect_comma;
11233
11234look_for_q:
11235
11236 /* Jump spaces, quit if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11237 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11238 al++;
11239 if (al >= end)
11240 goto process_value;
11241
11242 /* If ',' is found, process the result */
11243 if (*al == ',')
11244 goto process_value;
11245
11246 /* If the character is different from ';', look
11247 * for the end of the header part in best effort.
11248 */
11249 if (*al != ';')
11250 goto expect_comma;
11251
11252 /* Assumes that the char is ';', now expect "q=". */
11253 al++;
11254
11255 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11256 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11257 al++;
11258 if (al >= end)
11259 goto process_value;
11260
11261 /* Expect 'q'. If no 'q', continue in best effort */
11262 if (*al != 'q')
11263 goto process_value;
11264 al++;
11265
11266 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11267 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11268 al++;
11269 if (al >= end)
11270 goto process_value;
11271
11272 /* Expect '='. If no '=', continue in best effort */
11273 if (*al != '=')
11274 goto process_value;
11275 al++;
11276
11277 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11278 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11279 al++;
11280 if (al >= end)
11281 goto process_value;
11282
11283 /* Parse the q value. */
11284 qvalue = parse_qvalue(al, &al);
11285
11286process_value:
11287
11288 /* If the new q value is the best q value, then store the associated
11289 * language in the response. If qvalue is the biggest value (1000),
11290 * break the process.
11291 */
11292 if (qvalue > best_q) {
11293 smp->data.str.str = (char *)w;
11294 smp->data.str.len = str - w;
11295 if (qvalue >= 1000)
11296 break;
11297 best_q = qvalue;
11298 }
11299
11300expect_comma:
11301
11302 /* Expect comma or end. If the end is detected, quit the loop. */
11303 while (al < end && *al != ',')
11304 al++;
11305 if (al >= end)
11306 break;
11307
11308 /* Comma is found, jump it and restart the analyzer. */
11309 al++;
11310 }
11311
11312 /* Set default value if required. */
11313 if (smp->data.str.len == 0 && args[1].type == ARGT_STR) {
11314 smp->data.str.str = args[1].data.str.str;
11315 smp->data.str.len = args[1].data.str.len;
11316 }
11317
11318 /* Return true only if a matching language was found. */
11319 return smp->data.str.len != 0;
11320}
11321
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]11322/*
11323 * Return the struct http_req_action_kw associated to a keyword.
11324 */
11325struct http_req_action_kw *action_http_req_custom(const char *kw)
11326{
11327 if (!LIST_ISEMPTY(&http_req_keywords.list)) {
11328 struct http_req_action_kw_list *kw_list;
11329 int i;
11330
11331 list_for_each_entry(kw_list, &http_req_keywords.list, list) {
11332 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
11333 if (!strcmp(kw, kw_list->kw[i].kw))
11334 return &kw_list->kw[i];
11335 }
11336 }
11337 }
11338 return NULL;
11339}
11340
11341/*
11342 * Return the struct http_res_action_kw associated to a keyword.
11343 */
11344struct http_res_action_kw *action_http_res_custom(const char *kw)
11345{
11346 if (!LIST_ISEMPTY(&http_res_keywords.list)) {
11347 struct http_res_action_kw_list *kw_list;
11348 int i;
11349
11350 list_for_each_entry(kw_list, &http_res_keywords.list, list) {
11351 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
11352 if (!strcmp(kw, kw_list->kw[i].kw))
11353 return &kw_list->kw[i];
11354 }
11355 }
11356 }
11357 return NULL;
11358}
11359
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11360/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11361/* All supported ACL keywords must be declared here. */
11362/************************************************************************/
11363
11364/* Note: must not be declared <const> as its list will be overwritten.
11365 * Please take care of keeping this list alphabetically sorted.
11366 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]11367static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11368 { "base", "base", PAT_MATCH_STR },
11369 { "base_beg", "base", PAT_MATCH_BEG },
11370 { "base_dir", "base", PAT_MATCH_DIR },
11371 { "base_dom", "base", PAT_MATCH_DOM },
11372 { "base_end", "base", PAT_MATCH_END },
11373 { "base_len", "base", PAT_MATCH_LEN },
11374 { "base_reg", "base", PAT_MATCH_REG },
11375 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11376
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11377 { "cook", "req.cook", PAT_MATCH_STR },
11378 { "cook_beg", "req.cook", PAT_MATCH_BEG },
11379 { "cook_dir", "req.cook", PAT_MATCH_DIR },
11380 { "cook_dom", "req.cook", PAT_MATCH_DOM },
11381 { "cook_end", "req.cook", PAT_MATCH_END },
11382 { "cook_len", "req.cook", PAT_MATCH_LEN },
11383 { "cook_reg", "req.cook", PAT_MATCH_REG },
11384 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11385
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11386 { "hdr", "req.hdr", PAT_MATCH_STR },
11387 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
11388 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
11389 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
11390 { "hdr_end", "req.hdr", PAT_MATCH_END },
11391 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
11392 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
11393 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11394
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11395 /* these two declarations uses strings with list storage (in place
11396 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
11397 * and delete functions are relative to the list management. The parse
11398 * and match method are related to the corresponding fetch methods. This
11399 * is very particular ACL declaration mode.
11400 */
11401 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
11402 { "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]11403
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11404 { "path", "path", PAT_MATCH_STR },
11405 { "path_beg", "path", PAT_MATCH_BEG },
11406 { "path_dir", "path", PAT_MATCH_DIR },
11407 { "path_dom", "path", PAT_MATCH_DOM },
11408 { "path_end", "path", PAT_MATCH_END },
11409 { "path_len", "path", PAT_MATCH_LEN },
11410 { "path_reg", "path", PAT_MATCH_REG },
11411 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11412
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11413 { "req_ver", "req.ver", PAT_MATCH_STR },
11414 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11415
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11416 { "scook", "res.cook", PAT_MATCH_STR },
11417 { "scook_beg", "res.cook", PAT_MATCH_BEG },
11418 { "scook_dir", "res.cook", PAT_MATCH_DIR },
11419 { "scook_dom", "res.cook", PAT_MATCH_DOM },
11420 { "scook_end", "res.cook", PAT_MATCH_END },
11421 { "scook_len", "res.cook", PAT_MATCH_LEN },
11422 { "scook_reg", "res.cook", PAT_MATCH_REG },
11423 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11424
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11425 { "shdr", "res.hdr", PAT_MATCH_STR },
11426 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
11427 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
11428 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
11429 { "shdr_end", "res.hdr", PAT_MATCH_END },
11430 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
11431 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
11432 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11433
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11434 { "url", "url", PAT_MATCH_STR },
11435 { "url_beg", "url", PAT_MATCH_BEG },
11436 { "url_dir", "url", PAT_MATCH_DIR },
11437 { "url_dom", "url", PAT_MATCH_DOM },
11438 { "url_end", "url", PAT_MATCH_END },
11439 { "url_len", "url", PAT_MATCH_LEN },
11440 { "url_reg", "url", PAT_MATCH_REG },
11441 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11442
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11443 { "urlp", "urlp", PAT_MATCH_STR },
11444 { "urlp_beg", "urlp", PAT_MATCH_BEG },
11445 { "urlp_dir", "urlp", PAT_MATCH_DIR },
11446 { "urlp_dom", "urlp", PAT_MATCH_DOM },
11447 { "urlp_end", "urlp", PAT_MATCH_END },
11448 { "urlp_len", "urlp", PAT_MATCH_LEN },
11449 { "urlp_reg", "urlp", PAT_MATCH_REG },
11450 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11451
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]11452 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11453}};
11454
11455/************************************************************************/
11456/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11457/************************************************************************/
11458/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]11459static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11460 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11461 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
11462 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
11463
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11464 /* capture are allocated and are permanent in the session */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11465 { "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]11466
11467 /* retrieve these captures from the HTTP logs */
11468 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11469 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11470 { "capture.req.ver", smp_fetch_capture_req_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11471
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11472 { "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]11473 { "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]11474
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11475 /* cookie is valid in both directions (eg: for "stick ...") but cook*
11476 * are only here to match the ACL's name, are request-only and are used
11477 * for ACL compatibility only.
11478 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11479 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
11480 { "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]11481 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11482 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11483
11484 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
11485 * only here to match the ACL's name, are request-only and are used for
11486 * ACL compatibility only.
11487 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11488 { "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]11489 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11490 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
11491 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
11492
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]11493 { "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]11494 { "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]11495 { "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]11496 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11497 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11498
11499 /* HTTP protocol on the request path */
11500 { "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]11501 { "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]11502
11503 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11504 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
11505 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11506
11507 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11508 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
11509 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11510
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11511 /* 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]11512 { "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]11513 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11514 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11515
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11516 { "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]11517 { "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]11518 { "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]11519 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11520 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
11521 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
11522
11523 /* 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]11524 { "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]11525 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11526 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11527
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11528 { "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]11529 { "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]11530 { "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]11531 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11532 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
11533 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
11534
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11535 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11536 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11537 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11538 { "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]11539 { "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]11540
11541 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11542 { "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]11543 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11544 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
11545 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
11546
11547 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11548 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11549 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
11550 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11551 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
11552 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11553 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
11554 { "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]11555 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11556 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11557}};
11558
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11559
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11560/* Note: must not be declared <const> as its list will be overwritten */
11561static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11562 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR},
11563 { "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]11564 { NULL, NULL, 0, 0, 0 },
11565}};
11566
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11567__attribute__((constructor))
11568static void __http_protocol_init(void)
11569{
11570 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11571 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11572 sample_register_convs(&sample_conv_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11573}
11574
11575
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]11576/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]11577 * Local variables:
11578 * c-indent-level: 8
11579 * c-basic-offset: 8
11580 * End:
11581 */