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git01.mediatek.com / haproxy / 4db603daf039a4a0dac6caa6e64070dd3c94af4c / . / src / proto_http.c
blob: d2197da253cadeecbf102b901b9922ffc062f8fe [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 Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame^]2888 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
2889 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2890 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame^]2891 * The length of a message body is determined by one of the following
2892 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2893 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame^]2894 * 1. Any response to a HEAD request and any response with a 1xx
2895 * (Informational), 204 (No Content), or 304 (Not Modified) status
2896 * code is always terminated by the first empty line after the
2897 * header fields, regardless of the header fields present in the
2898 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2899 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame^]2900 * 2. Any 2xx (Successful) response to a CONNECT request implies that
2901 * the connection will become a tunnel immediately after the empty
2902 * line that concludes the header fields. A client MUST ignore any
2903 * Content-Length or Transfer-Encoding header fields received in
2904 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2905 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame^]2906 * 3. If a Transfer-Encoding header field is present and the chunked
2907 * transfer coding (Section 4.1) is the final encoding, the message
2908 * body length is determined by reading and decoding the chunked
2909 * data until the transfer coding indicates the data is complete.
2910 *
2911 * If a Transfer-Encoding header field is present in a response and
2912 * the chunked transfer coding is not the final encoding, the
2913 * message body length is determined by reading the connection until
2914 * it is closed by the server. If a Transfer-Encoding header field
2915 * is present in a request and the chunked transfer coding is not
2916 * the final encoding, the message body length cannot be determined
2917 * reliably; the server MUST respond with the 400 (Bad Request)
2918 * status code and then close the connection.
2919 *
2920 * If a message is received with both a Transfer-Encoding and a
2921 * Content-Length header field, the Transfer-Encoding overrides the
2922 * Content-Length. Such a message might indicate an attempt to
2923 * perform request smuggling (Section 9.5) or response splitting
2924 * (Section 9.4) and ought to be handled as an error. A sender MUST
2925 * remove the received Content-Length field prior to forwarding such
2926 * a message downstream.
2927 *
2928 * 4. If a message is received without Transfer-Encoding and with
2929 * either multiple Content-Length header fields having differing
2930 * field-values or a single Content-Length header field having an
2931 * invalid value, then the message framing is invalid and the
2932 * recipient MUST treat it as an unrecoverable error. If this is a
2933 * request message, the server MUST respond with a 400 (Bad Request)
2934 * status code and then close the connection. If this is a response
2935 * message received by a proxy, the proxy MUST close the connection
2936 * to the server, discard the received response, and send a 502 (Bad
2937 * Gateway) response to the client. If this is a response message
2938 * received by a user agent, the user agent MUST close the
2939 * connection to the server and discard the received response.
2940 *
2941 * 5. If a valid Content-Length header field is present without
2942 * Transfer-Encoding, its decimal value defines the expected message
2943 * body length in octets. If the sender closes the connection or
2944 * the recipient times out before the indicated number of octets are
2945 * received, the recipient MUST consider the message to be
2946 * incomplete and close the connection.
2947 *
2948 * 6. If this is a request message and none of the above are true, then
2949 * the message body length is zero (no message body is present).
2950 *
2951 * 7. Otherwise, this is a response message without a declared message
2952 * body length, so the message body length is determined by the
2953 * number of octets received prior to the server closing the
2954 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2955 */
2956
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2957 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2958 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2959 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2960 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2961 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2962 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2963 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2964 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2965 /* bad transfer-encoding (chunked followed by something else) */
2966 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2967 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2968 break;
2969 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2970 }
2971
Willy Tarreaudfa3d922015-04-30 10:57:51 +0200[diff] [blame]2972 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2973 ctx.idx = 0;
Willy Tarreaudfa3d922015-04-30 10:57:51 +0200[diff] [blame]2974 if (msg->flags & HTTP_MSGF_TE_CHNK) {
2975 while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx))
2976 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2977 }
2978 else while (!use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2979 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2980 signed long long cl;
2981
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2982 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2983 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2984 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2985 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2986
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2987 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2988 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2989 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2990 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2991
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2992 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2993 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2994 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2995 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2996
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2997 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2998 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2999 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3000 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3001
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3002 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3003 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3004 }
3005
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3006 /* bodyless requests have a known length */
3007 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3008 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3009
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3010 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
3011 * only change if both the request and the config reference something else.
3012 * Option httpclose by itself sets tunnel mode where headers are mangled.
3013 * However, if another mode is set, it will affect it (eg: server-close/
3014 * keep-alive + httpclose = close). Note that we avoid to redo the same work
3015 * if FE and BE have the same settings (common). The method consists in
3016 * checking if options changed between the two calls (implying that either
3017 * one is non-null, or one of them is non-null and we are there for the first
3018 * time.
3019 */
3020 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreau2e47a3a2014-09-30 18:44:22 +0200[diff] [blame]3021 ((s->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
3022 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3023
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3024 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3025 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3026 req->analyse_exp = TICK_ETERNITY;
3027 return 1;
3028
3029 return_bad_req:
3030 /* We centralize bad requests processing here */
3031 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3032 /* we detected a parsing error. We want to archive this request
3033 * in the dedicated proxy area for later troubleshooting.
3034 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3035 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]3036 }
3037
3038 txn->req.msg_state = HTTP_MSG_ERROR;
3039 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3040 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3041
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3042 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3043 if (s->listener->counters)
3044 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3045
3046 return_prx_cond:
3047 if (!(s->flags & SN_ERR_MASK))
3048 s->flags |= SN_ERR_PRXCOND;
3049 if (!(s->flags & SN_FINST_MASK))
3050 s->flags |= SN_FINST_R;
3051
3052 req->analysers = 0;
3053 req->analyse_exp = TICK_ETERNITY;
3054 return 0;
3055}
3056
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3057
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3058/* This function prepares an applet to handle the stats. It can deal with the
3059 * "100-continue" expectation, check that admin rules are met for POST requests,
3060 * and program a response message if something was unexpected. It cannot fail
3061 * 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]3062 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3063 * s->target which is supposed to already point to the stats applet. The caller
3064 * is expected to have already assigned an appctx to the session.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3065 */
3066int http_handle_stats(struct session *s, struct channel *req)
3067{
3068 struct stats_admin_rule *stats_admin_rule;
3069 struct stream_interface *si = s->rep->prod;
3070 struct http_txn *txn = &s->txn;
3071 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3072 struct uri_auth *uri_auth = s->be->uri_auth;
3073 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3074 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3075
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3076 appctx = si_appctx(si);
3077 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3078 appctx->st1 = appctx->st2 = 0;
3079 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3080 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3081 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn.meth != HTTP_METH_HEAD))
3082 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3083
3084 uri = msg->chn->buf->p + msg->sl.rq.u;
3085 lookup = uri + uri_auth->uri_len;
3086
3087 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3088 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3089 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3090 break;
3091 }
3092 }
3093
3094 if (uri_auth->refresh) {
3095 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3096 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3097 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3098 break;
3099 }
3100 }
3101 }
3102
3103 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3104 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3105 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3106 break;
3107 }
3108 }
3109
3110 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3111 if (memcmp(h, ";st=", 4) == 0) {
3112 int i;
3113 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3114 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3115 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3116 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3117 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3118 break;
3119 }
3120 }
3121 break;
3122 }
3123 }
3124
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3125 appctx->ctx.stats.scope_str = 0;
3126 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3127 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3128 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3129 int itx = 0;
3130 const char *h2;
3131 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3132 const char *err;
3133
3134 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3135 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3136 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3137 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3138 itx++;
3139 h++;
3140 }
3141
3142 if (itx > STAT_SCOPE_TXT_MAXLEN)
3143 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3144 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3145
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3146 /* 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]3147 memcpy(scope_txt, h2, itx);
3148 scope_txt[itx] = '\0';
3149 err = invalid_char(scope_txt);
3150 if (err) {
3151 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3152 appctx->ctx.stats.scope_str = 0;
3153 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3154 }
3155 break;
3156 }
3157 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3158
3159 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3160 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3161 int ret = 1;
3162
3163 if (stats_admin_rule->cond) {
3164 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
3165 ret = acl_pass(ret);
3166 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3167 ret = !ret;
3168 }
3169
3170 if (ret) {
3171 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3172 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3173 break;
3174 }
3175 }
3176
3177 /* Was the status page requested with a POST ? */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3178 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3179 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3180 /* we'll need the request body, possibly after sending 100-continue */
3181 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3182 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3183 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3184 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3185 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3186 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3187 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3188 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3189 else {
3190 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3191 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3192 }
3193
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3194 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3195 return 1;
3196}
3197
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3198/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3199 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3200 */
3201static inline void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
3202{
3203#ifdef IP_TOS
3204 if (from.ss_family == AF_INET)
3205 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3206#endif
3207#ifdef IPV6_TCLASS
3208 if (from.ss_family == AF_INET6) {
3209 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
3210 /* v4-mapped addresses need IP_TOS */
3211 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3212 else
3213 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3214 }
3215#endif
3216}
3217
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3218static 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]3219 char* buf, struct hdr_idx* idx, struct list *fmt, struct my_regex *re,
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3220 struct hdr_ctx* ctx, int action)
3221{
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3222 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3223 struct hdr_idx *idx, struct hdr_ctx *ctx);
3224 struct chunk *replace = get_trash_chunk();
3225 struct chunk *output = get_trash_chunk();
3226
3227 replace->len = build_logline(s, replace->str, replace->size, fmt);
3228 if (replace->len >= replace->size - 1)
3229 return -1;
3230
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3231 ctx->idx = 0;
3232
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3233 /* Choose the header browsing function. */
3234 switch (action) {
3235 case HTTP_REQ_ACT_REPLACE_VAL:
3236 case HTTP_RES_ACT_REPLACE_VAL:
3237 http_find_hdr_func = http_find_header2;
3238 break;
3239 case HTTP_REQ_ACT_REPLACE_HDR:
3240 case HTTP_RES_ACT_REPLACE_HDR:
3241 http_find_hdr_func = http_find_full_header2;
3242 break;
3243 default: /* impossible */
3244 return -1;
3245 }
3246
3247 while (http_find_hdr_func(name, name_len, buf, idx, ctx)) {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3248 struct hdr_idx_elem *hdr = idx->v + ctx->idx;
3249 int delta;
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3250 char *val = ctx->line + ctx->val;
3251 char* val_end = val + ctx->vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3252
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3253 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch))
3254 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3255
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3256 output->len = exp_replace(output->str, output->size, val, replace->str, pmatch);
3257 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3258 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3259
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3260 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3261
3262 hdr->len += delta;
3263 http_msg_move_end(msg, delta);
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3264
3265 /* Adjust the length of the current value of the index. */
3266 ctx->vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3267 }
3268
3269 return 0;
3270}
3271
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3272/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3273 * transaction <txn>. Returns the verdict of the first rule that prevents
3274 * further processing of the request (auth, deny, ...), and defaults to
3275 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3276 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
3277 * on txn->flags if it encounters a tarpit rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3278 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3279enum rule_result
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3280http_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]3281{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3282 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3283 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3284 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3285 const char *auth_realm;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3286
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3287 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3288 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3289 continue;
3290
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3291 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3292 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3293 int ret;
3294
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3295 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]3296 ret = acl_pass(ret);
3297
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3298 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3299 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3300
3301 if (!ret) /* condition not matched */
3302 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3303 }
3304
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3305
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3306 switch (rule->action) {
3307 case HTTP_REQ_ACT_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3308 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3309
3310 case HTTP_REQ_ACT_DENY:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3311 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3312
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3313 case HTTP_REQ_ACT_TARPIT:
3314 txn->flags |= TX_CLTARPIT;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3315 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3316
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3317 case HTTP_REQ_ACT_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3318 /* Auth might be performed on regular http-req rules as well as on stats */
3319 auth_realm = rule->arg.auth.realm;
3320 if (!auth_realm) {
3321 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3322 auth_realm = STATS_DEFAULT_REALM;
3323 else
3324 auth_realm = px->id;
3325 }
3326 /* send 401/407 depending on whether we use a proxy or not. We still
3327 * count one error, because normal browsing won't significantly
3328 * increase the counter but brute force attempts will.
3329 */
3330 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3331 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
3332 stream_int_retnclose(&s->si[0], &trash);
3333 session_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3334 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3335
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3336 case HTTP_REQ_ACT_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3337 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3338 return HTTP_RULE_RES_BADREQ;
3339 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3340
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3341 case HTTP_REQ_ACT_SET_NICE:
3342 s->task->nice = rule->arg.nice;
3343 break;
3344
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3345 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3346 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3347 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]3348 break;
3349
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3350 case HTTP_REQ_ACT_SET_MARK:
3351#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3352 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3353 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]3354#endif
3355 break;
3356
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3357 case HTTP_REQ_ACT_SET_LOGL:
3358 s->logs.level = rule->arg.loglevel;
3359 break;
3360
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3361 case HTTP_REQ_ACT_REPLACE_HDR:
3362 case HTTP_REQ_ACT_REPLACE_VAL:
3363 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3364 txn->req.chn->buf->p, &txn->hdr_idx, &rule->arg.hdr_add.fmt,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3365 &rule->arg.hdr_add.re, &ctx, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3366 return HTTP_RULE_RES_BADREQ;
3367 break;
3368
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3369 case HTTP_REQ_ACT_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3370 ctx.idx = 0;
3371 /* remove all occurrences of the header */
3372 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3373 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3374 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3375 }
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3376 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3377
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3378 case HTTP_REQ_ACT_SET_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3379 case HTTP_REQ_ACT_ADD_HDR:
3380 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3381 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3382 trash.len = rule->arg.hdr_add.name_len;
3383 trash.str[trash.len++] = ':';
3384 trash.str[trash.len++] = ' ';
3385 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]3386
3387 if (rule->action == HTTP_REQ_ACT_SET_HDR) {
3388 /* remove all occurrences of the header */
3389 ctx.idx = 0;
3390 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3391 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3392 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3393 }
3394 }
3395
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3396 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3397 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3398
3399 case HTTP_REQ_ACT_DEL_ACL:
3400 case HTTP_REQ_ACT_DEL_MAP: {
3401 struct pat_ref *ref;
3402 char *key;
3403 int len;
3404
3405 /* collect reference */
3406 ref = pat_ref_lookup(rule->arg.map.ref);
3407 if (!ref)
3408 continue;
3409
3410 /* collect key */
3411 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3412 key = trash.str;
3413 key[len] = '\0';
3414
3415 /* perform update */
3416 /* returned code: 1=ok, 0=ko */
3417 pat_ref_delete(ref, key);
3418
3419 break;
3420 }
3421
3422 case HTTP_REQ_ACT_ADD_ACL: {
3423 struct pat_ref *ref;
3424 char *key;
3425 struct chunk *trash_key;
3426 int len;
3427
3428 trash_key = get_trash_chunk();
3429
3430 /* collect reference */
3431 ref = pat_ref_lookup(rule->arg.map.ref);
3432 if (!ref)
3433 continue;
3434
3435 /* collect key */
3436 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3437 key = trash_key->str;
3438 key[len] = '\0';
3439
3440 /* perform update */
3441 /* add entry only if it does not already exist */
3442 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3443 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3444
3445 break;
3446 }
3447
3448 case HTTP_REQ_ACT_SET_MAP: {
3449 struct pat_ref *ref;
3450 char *key, *value;
3451 struct chunk *trash_key, *trash_value;
3452 int len;
3453
3454 trash_key = get_trash_chunk();
3455 trash_value = get_trash_chunk();
3456
3457 /* collect reference */
3458 ref = pat_ref_lookup(rule->arg.map.ref);
3459 if (!ref)
3460 continue;
3461
3462 /* collect key */
3463 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3464 key = trash_key->str;
3465 key[len] = '\0';
3466
3467 /* collect value */
3468 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3469 value = trash_value->str;
3470 value[len] = '\0';
3471
3472 /* perform update */
3473 if (pat_ref_find_elt(ref, key) != NULL)
3474 /* update entry if it exists */
3475 pat_ref_set(ref, key, value, NULL);
3476 else
3477 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3478 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3479
3480 break;
3481 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3482
3483 case HTTP_REQ_ACT_CUSTOM_CONT:
3484 rule->action_ptr(rule, px, s, txn);
3485 break;
3486
3487 case HTTP_REQ_ACT_CUSTOM_STOP:
3488 rule->action_ptr(rule, px, s, txn);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3489 return HTTP_RULE_RES_DONE;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3490 }
3491 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3492
3493 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3494 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3495}
3496
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3497
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3498/* Executes the http-response rules <rules> for session <s>, proxy <px> and
3499 * transaction <txn>. Returns the first rule that prevents further processing
3500 * of the response (deny, ...) or NULL if it executed all rules or stopped
3501 * on an allow. It may set the TX_SVDENY on txn->flags if it encounters a deny
3502 * rule.
3503 */
3504static struct http_res_rule *
3505http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3506{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3507 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3508 struct http_res_rule *rule;
3509 struct hdr_ctx ctx;
3510
3511 list_for_each_entry(rule, rules, list) {
3512 if (rule->action >= HTTP_RES_ACT_MAX)
3513 continue;
3514
3515 /* check optional condition */
3516 if (rule->cond) {
3517 int ret;
3518
3519 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
3520 ret = acl_pass(ret);
3521
3522 if (rule->cond->pol == ACL_COND_UNLESS)
3523 ret = !ret;
3524
3525 if (!ret) /* condition not matched */
3526 continue;
3527 }
3528
3529
3530 switch (rule->action) {
3531 case HTTP_RES_ACT_ALLOW:
3532 return NULL; /* "allow" rules are OK */
3533
3534 case HTTP_RES_ACT_DENY:
3535 txn->flags |= TX_SVDENY;
3536 return rule;
3537
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3538 case HTTP_RES_ACT_SET_NICE:
3539 s->task->nice = rule->arg.nice;
3540 break;
3541
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3542 case HTTP_RES_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3543 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3544 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]3545 break;
3546
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3547 case HTTP_RES_ACT_SET_MARK:
3548#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3549 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3550 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]3551#endif
3552 break;
3553
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3554 case HTTP_RES_ACT_SET_LOGL:
3555 s->logs.level = rule->arg.loglevel;
3556 break;
3557
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3558 case HTTP_RES_ACT_REPLACE_HDR:
3559 case HTTP_RES_ACT_REPLACE_VAL:
3560 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3561 txn->rsp.chn->buf->p, &txn->hdr_idx, &rule->arg.hdr_add.fmt,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3562 &rule->arg.hdr_add.re, &ctx, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3563 return NULL; /* note: we should report an error here */
3564 break;
3565
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3566 case HTTP_RES_ACT_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3567 ctx.idx = 0;
3568 /* remove all occurrences of the header */
3569 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3570 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3571 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3572 }
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3573 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3574
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3575 case HTTP_RES_ACT_SET_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3576 case HTTP_RES_ACT_ADD_HDR:
3577 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3578 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3579 trash.len = rule->arg.hdr_add.name_len;
3580 trash.str[trash.len++] = ':';
3581 trash.str[trash.len++] = ' ';
3582 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]3583
3584 if (rule->action == HTTP_RES_ACT_SET_HDR) {
3585 /* remove all occurrences of the header */
3586 ctx.idx = 0;
3587 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3588 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3589 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3590 }
3591 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3592 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3593 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3594
3595 case HTTP_RES_ACT_DEL_ACL:
3596 case HTTP_RES_ACT_DEL_MAP: {
3597 struct pat_ref *ref;
3598 char *key;
3599 int len;
3600
3601 /* collect reference */
3602 ref = pat_ref_lookup(rule->arg.map.ref);
3603 if (!ref)
3604 continue;
3605
3606 /* collect key */
3607 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3608 key = trash.str;
3609 key[len] = '\0';
3610
3611 /* perform update */
3612 /* returned code: 1=ok, 0=ko */
3613 pat_ref_delete(ref, key);
3614
3615 break;
3616 }
3617
3618 case HTTP_RES_ACT_ADD_ACL: {
3619 struct pat_ref *ref;
3620 char *key;
3621 struct chunk *trash_key;
3622 int len;
3623
3624 trash_key = get_trash_chunk();
3625
3626 /* collect reference */
3627 ref = pat_ref_lookup(rule->arg.map.ref);
3628 if (!ref)
3629 continue;
3630
3631 /* collect key */
3632 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3633 key = trash_key->str;
3634 key[len] = '\0';
3635
3636 /* perform update */
3637 /* check if the entry already exists */
3638 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3639 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3640
3641 break;
3642 }
3643
3644 case HTTP_RES_ACT_SET_MAP: {
3645 struct pat_ref *ref;
3646 char *key, *value;
3647 struct chunk *trash_key, *trash_value;
3648 int len;
3649
3650 trash_key = get_trash_chunk();
3651 trash_value = get_trash_chunk();
3652
3653 /* collect reference */
3654 ref = pat_ref_lookup(rule->arg.map.ref);
3655 if (!ref)
3656 continue;
3657
3658 /* collect key */
3659 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3660 key = trash_key->str;
3661 key[len] = '\0';
3662
3663 /* collect value */
3664 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3665 value = trash_value->str;
3666 value[len] = '\0';
3667
3668 /* perform update */
3669 if (pat_ref_find_elt(ref, key) != NULL)
3670 /* update entry if it exists */
3671 pat_ref_set(ref, key, value, NULL);
3672 else
3673 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3674 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3675
3676 break;
3677 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3678
3679 case HTTP_RES_ACT_CUSTOM_CONT:
3680 rule->action_ptr(rule, px, s, txn);
3681 break;
3682
3683 case HTTP_RES_ACT_CUSTOM_STOP:
3684 rule->action_ptr(rule, px, s, txn);
3685 return rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3686 }
3687 }
3688
3689 /* we reached the end of the rules, nothing to report */
3690 return NULL;
3691}
3692
3693
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3694/* Perform an HTTP redirect based on the information in <rule>. The function
3695 * returns non-zero on success, or zero in case of a, irrecoverable error such
3696 * as too large a request to build a valid response.
3697 */
3698static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3699{
3700 struct http_msg *msg = &txn->req;
3701 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3702 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3703
3704 /* build redirect message */
3705 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3706 case 308:
3707 msg_fmt = HTTP_308;
3708 break;
3709 case 307:
3710 msg_fmt = HTTP_307;
3711 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3712 case 303:
3713 msg_fmt = HTTP_303;
3714 break;
3715 case 301:
3716 msg_fmt = HTTP_301;
3717 break;
3718 case 302:
3719 default:
3720 msg_fmt = HTTP_302;
3721 break;
3722 }
3723
3724 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3725 return 0;
3726
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3727 location = trash.str + trash.len;
3728
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3729 switch(rule->type) {
3730 case REDIRECT_TYPE_SCHEME: {
3731 const char *path;
3732 const char *host;
3733 struct hdr_ctx ctx;
3734 int pathlen;
3735 int hostlen;
3736
3737 host = "";
3738 hostlen = 0;
3739 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]3740 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]3741 host = ctx.line + ctx.val;
3742 hostlen = ctx.vlen;
3743 }
3744
3745 path = http_get_path(txn);
3746 /* build message using path */
3747 if (path) {
3748 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3749 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3750 int qs = 0;
3751 while (qs < pathlen) {
3752 if (path[qs] == '?') {
3753 pathlen = qs;
3754 break;
3755 }
3756 qs++;
3757 }
3758 }
3759 } else {
3760 path = "/";
3761 pathlen = 1;
3762 }
3763
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3764 if (rule->rdr_str) { /* this is an old "redirect" rule */
3765 /* check if we can add scheme + "://" + host + path */
3766 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3767 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3768
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3769 /* add scheme */
3770 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3771 trash.len += rule->rdr_len;
3772 }
3773 else {
3774 /* add scheme with executing log format */
3775 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]3776
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3777 /* check if we can add scheme + "://" + host + path */
3778 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3779 return 0;
3780 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3781 /* add "://" */
3782 memcpy(trash.str + trash.len, "://", 3);
3783 trash.len += 3;
3784
3785 /* add host */
3786 memcpy(trash.str + trash.len, host, hostlen);
3787 trash.len += hostlen;
3788
3789 /* add path */
3790 memcpy(trash.str + trash.len, path, pathlen);
3791 trash.len += pathlen;
3792
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3793 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3794 if (trash.len && trash.str[trash.len - 1] != '/' &&
3795 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3796 if (trash.len > trash.size - 5)
3797 return 0;
3798 trash.str[trash.len] = '/';
3799 trash.len++;
3800 }
3801
3802 break;
3803 }
3804 case REDIRECT_TYPE_PREFIX: {
3805 const char *path;
3806 int pathlen;
3807
3808 path = http_get_path(txn);
3809 /* build message using path */
3810 if (path) {
3811 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3812 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3813 int qs = 0;
3814 while (qs < pathlen) {
3815 if (path[qs] == '?') {
3816 pathlen = qs;
3817 break;
3818 }
3819 qs++;
3820 }
3821 }
3822 } else {
3823 path = "/";
3824 pathlen = 1;
3825 }
3826
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3827 if (rule->rdr_str) { /* this is an old "redirect" rule */
3828 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3829 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3830
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3831 /* add prefix. Note that if prefix == "/", we don't want to
3832 * add anything, otherwise it makes it hard for the user to
3833 * configure a self-redirection.
3834 */
3835 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3836 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3837 trash.len += rule->rdr_len;
3838 }
3839 }
3840 else {
3841 /* add prefix with executing log format */
3842 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3843
3844 /* Check length */
3845 if (trash.len + pathlen > trash.size - 4)
3846 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3847 }
3848
3849 /* add path */
3850 memcpy(trash.str + trash.len, path, pathlen);
3851 trash.len += pathlen;
3852
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3853 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3854 if (trash.len && trash.str[trash.len - 1] != '/' &&
3855 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3856 if (trash.len > trash.size - 5)
3857 return 0;
3858 trash.str[trash.len] = '/';
3859 trash.len++;
3860 }
3861
3862 break;
3863 }
3864 case REDIRECT_TYPE_LOCATION:
3865 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3866 if (rule->rdr_str) { /* this is an old "redirect" rule */
3867 if (trash.len + rule->rdr_len > trash.size - 4)
3868 return 0;
3869
3870 /* add location */
3871 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3872 trash.len += rule->rdr_len;
3873 }
3874 else {
3875 /* add location with executing log format */
3876 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]3877
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3878 /* Check left length */
3879 if (trash.len > trash.size - 4)
3880 return 0;
3881 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3882 break;
3883 }
3884
3885 if (rule->cookie_len) {
3886 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3887 trash.len += 14;
3888 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3889 trash.len += rule->cookie_len;
3890 memcpy(trash.str + trash.len, "\r\n", 2);
3891 trash.len += 2;
3892 }
3893
3894 /* add end of headers and the keep-alive/close status.
3895 * We may choose to set keep-alive if the Location begins
3896 * with a slash, because the client will come back to the
3897 * same server.
3898 */
3899 txn->status = rule->code;
3900 /* let's log the request time */
3901 s->logs.tv_request = now;
3902
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3903 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3904 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3905 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3906 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3907 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3908 /* keep-alive possible */
3909 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3910 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3911 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3912 trash.len += 30;
3913 } else {
3914 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3915 trash.len += 24;
3916 }
3917 }
3918 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3919 trash.len += 4;
3920 bo_inject(txn->rsp.chn, trash.str, trash.len);
3921 /* "eat" the request */
3922 bi_fast_delete(txn->req.chn->buf, msg->sov);
Willy Tarreau6d8bac72014-04-25 12:19:32 +0200[diff] [blame]3923 msg->next -= msg->sov;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3924 msg->sov = 0;
3925 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3926 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3927 txn->req.msg_state = HTTP_MSG_CLOSED;
3928 txn->rsp.msg_state = HTTP_MSG_DONE;
3929 } else {
3930 /* keep-alive not possible */
3931 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3932 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3933 trash.len += 29;
3934 } else {
3935 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3936 trash.len += 23;
3937 }
3938 stream_int_retnclose(txn->req.chn->prod, &trash);
3939 txn->req.chn->analysers = 0;
3940 }
3941
3942 if (!(s->flags & SN_ERR_MASK))
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3943 s->flags |= SN_ERR_LOCAL;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3944 if (!(s->flags & SN_FINST_MASK))
3945 s->flags |= SN_FINST_R;
3946
3947 return 1;
3948}
3949
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3950/* This stream analyser runs all HTTP request processing which is common to
3951 * frontends and backends, which means blocking ACLs, filters, connection-close,
3952 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3953 * 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]3954 * either needs more data or wants to immediately abort the request (eg: deny,
3955 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3956 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3957int 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]3958{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3959 struct http_txn *txn = &s->txn;
3960 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3961 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3962 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3963 enum rule_result verdict;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3964
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3965 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3966 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3967 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3968 return 0;
3969 }
3970
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3971 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]3972 now_ms, __FUNCTION__,
3973 s,
3974 req,
3975 req->rex, req->wex,
3976 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3977 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3978 req->analysers);
3979
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]3980 /* just in case we have some per-backend tracking */
3981 session_inc_be_http_req_ctr(s);
3982
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3983 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3984 if (!LIST_ISEMPTY(&px->http_req_rules)) {
3985 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, txn);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]3986
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3987 switch (verdict) {
3988 case HTTP_RULE_RES_CONT:
3989 case HTTP_RULE_RES_STOP: /* nothing to do */
3990 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3991
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3992 case HTTP_RULE_RES_DENY: /* deny or tarpit */
3993 if (txn->flags & TX_CLTARPIT)
3994 goto tarpit;
3995 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3996
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3997 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
3998 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3999
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4000 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4001 goto done;
4002
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4003 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4004 goto return_bad_req;
4005 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4006 }
4007
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4008 /* OK at this stage, we know that the request was accepted according to
4009 * the http-request rules, we can check for the stats. Note that the
4010 * URI is detected *before* the req* rules in order not to be affected
4011 * by a possible reqrep, while they are processed *after* so that a
4012 * reqdeny can still block them. This clearly needs to change in 1.6!
4013 */
4014 if (stats_check_uri(s->rep->prod, txn, px)) {
4015 s->target = &http_stats_applet.obj_type;
4016 if (unlikely(!stream_int_register_handler(s->rep->prod, objt_applet(s->target)))) {
4017 txn->status = 500;
4018 s->logs.tv_request = now;
4019 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4020
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4021 if (!(s->flags & SN_ERR_MASK))
4022 s->flags |= SN_ERR_RESOURCE;
4023 goto return_prx_cond;
4024 }
4025
4026 /* parse the whole stats request and extract the relevant information */
4027 http_handle_stats(s, req);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4028 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, txn);
4029 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4030
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4031 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4032 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4033
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4034 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4035 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4036 }
4037
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4038 /* evaluate the req* rules except reqadd */
4039 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4040 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4041 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4042
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4043 if (txn->flags & TX_CLDENY)
4044 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4045
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4046 if (txn->flags & TX_CLTARPIT)
4047 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4048 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4049
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4050 /* add request headers from the rule sets in the same order */
4051 list_for_each_entry(wl, &px->req_add, list) {
4052 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]4053 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]4054 ret = acl_pass(ret);
4055 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4056 ret = !ret;
4057 if (!ret)
4058 continue;
4059 }
4060
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4061 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4062 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4063 }
4064
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4065
4066 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4067 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4068 /* process the stats request now */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4069 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
4070 s->fe->fe_counters.intercepted_req++;
4071
4072 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
4073 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
4074 if (!(s->flags & SN_FINST_MASK))
4075 s->flags |= SN_FINST_R;
4076
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4077 /* we may want to compress the stats page */
4078 if (s->fe->comp || s->be->comp)
4079 select_compression_request_header(s, req->buf);
4080
4081 /* 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]4082 req->analysers = (req->analysers & AN_REQ_HTTP_BODY) | AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4083 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4084 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4085
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4086 /* check whether we have some ACLs set to redirect this request */
4087 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4088 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4089 int ret;
4090
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]4091 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]4092 ret = acl_pass(ret);
4093 if (rule->cond->pol == ACL_COND_UNLESS)
4094 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4095 if (!ret)
4096 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4097 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4098 if (!http_apply_redirect_rule(rule, s, txn))
4099 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4100 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4101 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4102
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4103 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4104 * If this happens, then the data will not come immediately, so we must
4105 * send all what we have without waiting. Note that due to the small gain
4106 * 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]4107 * 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]4108 * itself once used.
4109 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4110 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4111
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4112 done: /* done with this analyser, continue with next ones that the calling
4113 * points will have set, if any.
4114 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4115 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIERfc566b52014-08-22 06:55:26 +0200[diff] [blame]4116 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4117 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4118 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4119
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4120 tarpit:
4121 /* When a connection is tarpitted, we use the tarpit timeout,
4122 * which may be the same as the connect timeout if unspecified.
4123 * If unset, then set it to zero because we really want it to
4124 * eventually expire. We build the tarpit as an analyser.
4125 */
4126 channel_erase(s->req);
4127
4128 /* wipe the request out so that we can drop the connection early
4129 * if the client closes first.
4130 */
4131 channel_dont_connect(req);
4132 req->analysers = 0; /* remove switching rules etc... */
4133 req->analysers |= AN_REQ_HTTP_TARPIT;
4134 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4135 if (!req->analyse_exp)
4136 req->analyse_exp = tick_add(now_ms, 0);
4137 session_inc_http_err_ctr(s);
4138 s->fe->fe_counters.denied_req++;
4139 if (s->fe != s->be)
4140 s->be->be_counters.denied_req++;
4141 if (s->listener->counters)
4142 s->listener->counters->denied_req++;
Thierry FOURNIERfc566b52014-08-22 06:55:26 +0200[diff] [blame]4143 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4144
4145 deny: /* this request was blocked (denied) */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4146 txn->flags |= TX_CLDENY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4147 txn->status = 403;
4148 s->logs.tv_request = now;
4149 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
4150 session_inc_http_err_ctr(s);
4151 s->fe->fe_counters.denied_req++;
4152 if (s->fe != s->be)
4153 s->be->be_counters.denied_req++;
4154 if (s->listener->counters)
4155 s->listener->counters->denied_req++;
4156 goto return_prx_cond;
4157
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4158 return_bad_req:
4159 /* We centralize bad requests processing here */
4160 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4161 /* we detected a parsing error. We want to archive this request
4162 * in the dedicated proxy area for later troubleshooting.
4163 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4164 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]4165 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4166
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4167 txn->req.msg_state = HTTP_MSG_ERROR;
4168 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4169 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4170
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4171 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4172 if (s->listener->counters)
4173 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4174
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4175 return_prx_cond:
4176 if (!(s->flags & SN_ERR_MASK))
4177 s->flags |= SN_ERR_PRXCOND;
4178 if (!(s->flags & SN_FINST_MASK))
4179 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4180
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4181 req->analysers = 0;
4182 req->analyse_exp = TICK_ETERNITY;
4183 return 0;
4184}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4185
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4186/* This function performs all the processing enabled for the current request.
4187 * It returns 1 if the processing can continue on next analysers, or zero if it
4188 * needs more data, encounters an error, or wants to immediately abort the
4189 * request. It relies on buffers flags, and updates s->req->analysers.
4190 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4191int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4192{
4193 struct http_txn *txn = &s->txn;
4194 struct http_msg *msg = &txn->req;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4195 struct connection *cli_conn = objt_conn(req->prod->end);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4196
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4197 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4198 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4199 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4200 return 0;
4201 }
4202
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4203 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]4204 now_ms, __FUNCTION__,
4205 s,
4206 req,
4207 req->rex, req->wex,
4208 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4209 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4210 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4211
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]4212 if (s->fe->comp || s->be->comp)
4213 select_compression_request_header(s, req->buf);
4214
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4215 /*
4216 * Right now, we know that we have processed the entire headers
4217 * and that unwanted requests have been filtered out. We can do
4218 * whatever we want with the remaining request. Also, now we
4219 * may have separate values for ->fe, ->be.
4220 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4221
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4222 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4223 * If HTTP PROXY is set we simply get remote server address parsing
4224 * incoming request. Note that this requires that a connection is
4225 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4226 */
4227 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4228 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4229 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4230
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4231 /* Note that for now we don't reuse existing proxy connections */
4232 if (unlikely((conn = si_alloc_conn(req->cons, 0)) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4233 txn->req.msg_state = HTTP_MSG_ERROR;
4234 txn->status = 500;
4235 req->analysers = 0;
4236 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
4237
4238 if (!(s->flags & SN_ERR_MASK))
4239 s->flags |= SN_ERR_RESOURCE;
4240 if (!(s->flags & SN_FINST_MASK))
4241 s->flags |= SN_FINST_R;
4242
4243 return 0;
4244 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4245
4246 path = http_get_path(txn);
4247 url2sa(req->buf->p + msg->sl.rq.u,
4248 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4249 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4250 /* if the path was found, we have to remove everything between
4251 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4252 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4253 * u_l characters by a single "/".
4254 */
4255 if (path) {
4256 char *cur_ptr = req->buf->p;
4257 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4258 int delta;
4259
4260 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4261 http_msg_move_end(&txn->req, delta);
4262 cur_end += delta;
4263 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4264 goto return_bad_req;
4265 }
4266 else {
4267 char *cur_ptr = req->buf->p;
4268 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4269 int delta;
4270
4271 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4272 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4273 http_msg_move_end(&txn->req, delta);
4274 cur_end += delta;
4275 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4276 goto return_bad_req;
4277 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4278 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4279
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4280 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4281 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4282 * Note that doing so might move headers in the request, but
4283 * the fields will stay coherent and the URI will not move.
4284 * This should only be performed in the backend.
4285 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4286 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4287 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
4288 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4289
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4290 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4291 * 8: the appsession cookie was looked up very early in 1.2,
4292 * so let's do the same now.
4293 */
4294
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4295 /* It needs to look into the URI unless persistence must be ignored */
4296 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4297 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]4298 }
4299
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4300 /* add unique-id if "header-unique-id" is specified */
4301
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4302 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
4303 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4304 goto return_bad_req;
4305 s->unique_id[0] = '\0';
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4306 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4307 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4308
4309 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4310 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
4311 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4312 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4313 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]4314 goto return_bad_req;
4315 }
4316
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4317 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4318 * 9: add X-Forwarded-For if either the frontend or the backend
4319 * asks for it.
4320 */
4321 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4322 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4323 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]4324 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
4325 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]4326 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4327 /* The header is set to be added only if none is present
4328 * and we found it, so don't do anything.
4329 */
4330 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4331 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4332 /* Add an X-Forwarded-For header unless the source IP is
4333 * in the 'except' network range.
4334 */
4335 if ((!s->fe->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4336 (((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]4337 != s->fe->except_net.s_addr) &&
4338 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4339 (((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]4340 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4341 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4342 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4343 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4344
4345 /* Note: we rely on the backend to get the header name to be used for
4346 * x-forwarded-for, because the header is really meant for the backends.
4347 * However, if the backend did not specify any option, we have to rely
4348 * on the frontend's header name.
4349 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4350 if (s->be->fwdfor_hdr_len) {
4351 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4352 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4353 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4354 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4355 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4356 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4357 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]4358
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4359 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]4360 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4361 }
4362 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4363 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4364 /* FIXME: for the sake of completeness, we should also support
4365 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4366 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4367 int len;
4368 char pn[INET6_ADDRSTRLEN];
4369 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4370 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4371 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4372
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4373 /* Note: we rely on the backend to get the header name to be used for
4374 * x-forwarded-for, because the header is really meant for the backends.
4375 * However, if the backend did not specify any option, we have to rely
4376 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4377 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4378 if (s->be->fwdfor_hdr_len) {
4379 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4380 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4381 } else {
4382 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4383 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4384 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4385 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4386
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4387 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]4388 goto return_bad_req;
4389 }
4390 }
4391
4392 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4393 * 10: add X-Original-To if either the frontend or the backend
4394 * asks for it.
4395 */
4396 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
4397
4398 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4399 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4400 /* Add an X-Original-To header unless the destination IP is
4401 * in the 'except' network range.
4402 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4403 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4404
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4405 if (cli_conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4406 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4407 (((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]4408 != s->fe->except_to.s_addr) &&
4409 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4410 (((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]4411 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4412 int len;
4413 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4414 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4415
4416 /* Note: we rely on the backend to get the header name to be used for
4417 * x-original-to, because the header is really meant for the backends.
4418 * However, if the backend did not specify any option, we have to rely
4419 * on the frontend's header name.
4420 */
4421 if (s->be->orgto_hdr_len) {
4422 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4423 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4424 } else {
4425 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4426 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4427 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4428 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]4429
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4430 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]4431 goto return_bad_req;
4432 }
4433 }
4434 }
4435
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4436 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4437 * If an "Upgrade" token is found, the header is left untouched in order not to have
4438 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4439 * "Upgrade" is present in the Connection header.
4440 */
4441 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4442 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4443 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4444 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4445 unsigned int want_flags = 0;
4446
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4447 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4448 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4449 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4450 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4451 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4452 want_flags |= TX_CON_CLO_SET;
4453 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4454 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4455 ((s->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
4456 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4457 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4458 want_flags |= TX_CON_KAL_SET;
4459 }
4460
4461 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4462 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4463 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4464
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4465
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4466 /* If we have no server assigned yet and we're balancing on url_param
4467 * with a POST request, we may be interested in checking the body for
4468 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4469 */
4470 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
4471 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4472 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4473 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4474 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4475 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4476
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4477 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4478 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4479#ifdef TCP_QUICKACK
4480 /* We expect some data from the client. Unless we know for sure
4481 * we already have a full request, we have to re-enable quick-ack
4482 * in case we previously disabled it, otherwise we might cause
4483 * the client to delay further data.
4484 */
4485 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4486 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4487 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4488 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4489 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4490#endif
4491 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4492
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4493 /*************************************************************
4494 * OK, that's finished for the headers. We have done what we *
4495 * could. Let's switch to the DATA state. *
4496 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4497 req->analyse_exp = TICK_ETERNITY;
4498 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4499
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4500 /* if the server closes the connection, we want to immediately react
4501 * and close the socket to save packets and syscalls.
4502 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4503 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
4504 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4505
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4506 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4507 /* OK let's go on with the BODY now */
4508 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4509
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4510 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4511 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4512 /* we detected a parsing error. We want to archive this request
4513 * in the dedicated proxy area for later troubleshooting.
4514 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4515 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]4516 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4517
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4518 txn->req.msg_state = HTTP_MSG_ERROR;
4519 txn->status = 400;
4520 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4521 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4522
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4523 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4524 if (s->listener->counters)
4525 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4526
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4527 if (!(s->flags & SN_ERR_MASK))
4528 s->flags |= SN_ERR_PRXCOND;
4529 if (!(s->flags & SN_FINST_MASK))
4530 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4531 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4532}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4533
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4534/* This function is an analyser which processes the HTTP tarpit. It always
4535 * returns zero, at the beginning because it prevents any other processing
4536 * from occurring, and at the end because it terminates the request.
4537 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4538int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4539{
4540 struct http_txn *txn = &s->txn;
4541
4542 /* This connection is being tarpitted. The CLIENT side has
4543 * already set the connect expiration date to the right
4544 * timeout. We just have to check that the client is still
4545 * there and that the timeout has not expired.
4546 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4547 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4548 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4549 !tick_is_expired(req->analyse_exp, now_ms))
4550 return 0;
4551
4552 /* We will set the queue timer to the time spent, just for
4553 * logging purposes. We fake a 500 server error, so that the
4554 * attacker will not suspect his connection has been tarpitted.
4555 * It will not cause trouble to the logs because we can exclude
4556 * the tarpitted connections by filtering on the 'PT' status flags.
4557 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4558 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4559
4560 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4561 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4562 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4563
4564 req->analysers = 0;
4565 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4566
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4567 if (!(s->flags & SN_ERR_MASK))
4568 s->flags |= SN_ERR_PRXCOND;
4569 if (!(s->flags & SN_FINST_MASK))
4570 s->flags |= SN_FINST_T;
4571 return 0;
4572}
4573
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4574/* This function is an analyser which waits for the HTTP request body. It waits
4575 * for either the buffer to be full, or the full advertised contents to have
4576 * reached the buffer. It must only be called after the standard HTTP request
4577 * processing has occurred, because it expects the request to be parsed and will
4578 * look for the Expect header. It may send a 100-Continue interim response. It
4579 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4580 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4581 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4582 */
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4583int http_wait_for_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4584{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4585 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4586 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4587
4588 /* We have to parse the HTTP request body to find any required data.
4589 * "balance url_param check_post" should have been the only way to get
4590 * into this. We were brought here after HTTP header analysis, so all
4591 * related structures are ready.
4592 */
4593
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4594 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4595 /* This is the first call */
4596 if (msg->msg_state < HTTP_MSG_BODY)
4597 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4598
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4599 if (msg->msg_state < HTTP_MSG_100_SENT) {
4600 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4601 * send an HTTP/1.1 100 Continue intermediate response.
4602 */
4603 if (msg->flags & HTTP_MSGF_VER_11) {
4604 struct hdr_ctx ctx;
4605 ctx.idx = 0;
4606 /* Expect is allowed in 1.1, look for it */
4607 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4608 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
4609 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
4610 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4611 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4612 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4613 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4614
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4615 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4616 * req->buf->p still points to the beginning of the message. We
4617 * must save the body in msg->next because it survives buffer
4618 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4619 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4620 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4621
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4622 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4623 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4624 else
4625 msg->msg_state = HTTP_MSG_DATA;
4626 }
4627
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4628 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4629 /* We're in content-length mode, we just have to wait for enough data. */
4630 if (req->buf->i - msg->sov < msg->body_len)
4631 goto missing_data;
4632
4633 /* OK we have everything we need now */
4634 goto http_end;
4635 }
4636
4637 /* OK here we're parsing a chunked-encoded message */
4638
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4639 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4640 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4641 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4642 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4643 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4644 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4645
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4646 if (!ret)
4647 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4648 else if (ret < 0) {
4649 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4650 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4651 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4652 }
4653
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4654 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4655 * 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]4656 * least a whole chunk or the whole content length bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4657 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4658 if (msg->msg_state == HTTP_MSG_TRAILERS)
4659 goto http_end;
4660
Willy Tarreau226071e2014-04-10 11:55:45 +0200[diff] [blame]4661 if (req->buf->i - msg->sov >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4662 goto http_end;
4663
4664 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4665 /* we get here if we need to wait for more data. If the buffer is full,
4666 * we have the maximum we can expect.
4667 */
4668 if (buffer_full(req->buf, global.tune.maxrewrite))
4669 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4670
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4671 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4672 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4673 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4674
4675 if (!(s->flags & SN_ERR_MASK))
4676 s->flags |= SN_ERR_CLITO;
4677 if (!(s->flags & SN_FINST_MASK))
4678 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4679 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4680 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4681
4682 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4683 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4684 /* Not enough data. We'll re-use the http-request
4685 * timeout here. Ideally, we should set the timeout
4686 * relative to the accept() date. We just set the
4687 * request timeout once at the beginning of the
4688 * request.
4689 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4690 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4691 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4692 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4693 return 0;
4694 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4695
4696 http_end:
4697 /* The situation will not evolve, so let's give up on the analysis. */
4698 s->logs.tv_request = now; /* update the request timer to reflect full request */
4699 req->analysers &= ~an_bit;
4700 req->analyse_exp = TICK_ETERNITY;
4701 return 1;
4702
4703 return_bad_req: /* let's centralize all bad requests */
4704 txn->req.msg_state = HTTP_MSG_ERROR;
4705 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4706 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4707
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4708 if (!(s->flags & SN_ERR_MASK))
4709 s->flags |= SN_ERR_PRXCOND;
4710 if (!(s->flags & SN_FINST_MASK))
4711 s->flags |= SN_FINST_R;
4712
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4713 return_err_msg:
4714 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4715 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4716 if (s->listener->counters)
4717 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4718 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4719}
4720
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4721/* send a server's name with an outgoing request over an established connection.
4722 * Note: this function is designed to be called once the request has been scheduled
4723 * for being forwarded. This is the reason why it rewinds the buffer before
4724 * proceeding.
4725 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4726int 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]4727
4728 struct hdr_ctx ctx;
4729
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4730 char *hdr_name = be->server_id_hdr_name;
4731 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4732 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4733 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4734 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4735
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4736 ctx.idx = 0;
4737
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4738 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4739 if (old_o) {
4740 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4741 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4742 txn->req.next += old_o;
4743 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4744 }
4745
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4746 old_i = chn->buf->i;
4747 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]4748 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4749 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4750 }
4751
4752 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4753 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4754 memcpy(hdr_val, hdr_name, hdr_name_len);
4755 hdr_val += hdr_name_len;
4756 *hdr_val++ = ':';
4757 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4758 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4759 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]4760
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4761 if (old_o) {
4762 /* If this was a forwarded request, we must readjust the amount of
4763 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4764 * variations. Note that the current state is >= HTTP_MSG_BODY,
4765 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4766 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4767 old_o += chn->buf->i - old_i;
4768 b_adv(chn->buf, old_o);
4769 txn->req.next -= old_o;
4770 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4771 }
4772
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4773 return 0;
4774}
4775
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4776/* Terminate current transaction and prepare a new one. This is very tricky
4777 * right now but it works.
4778 */
4779void http_end_txn_clean_session(struct session *s)
4780{
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4781 int prev_status = s->txn.status;
4782
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4783 /* FIXME: We need a more portable way of releasing a backend's and a
4784 * server's connections. We need a safer way to reinitialize buffer
4785 * flags. We also need a more accurate method for computing per-request
4786 * data.
4787 */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4788
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4789 /* unless we're doing keep-alive, we want to quickly close the connection
4790 * to the server.
4791 */
4792 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4793 !si_conn_ready(s->req->cons)) {
4794 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4795 si_shutr(s->req->cons);
4796 si_shutw(s->req->cons);
4797 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4798
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4799 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4800 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4801 if (unlikely(s->srv_conn))
4802 sess_change_server(s, NULL);
4803 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4804
4805 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4806 session_process_counters(s);
4807
4808 if (s->txn.status) {
4809 int n;
4810
4811 n = s->txn.status / 100;
4812 if (n < 1 || n > 5)
4813 n = 0;
4814
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4815 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4816 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4817 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4818 s->fe->fe_counters.p.http.comp_rsp++;
4819 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4820 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4821 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4822 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4823 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4824 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4825 s->be->be_counters.p.http.comp_rsp++;
4826 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4827 }
4828
4829 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4830 s->logs.bytes_in -= s->req->buf->i;
4831 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4832
4833 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4834 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4835 !(s->flags & SN_MONITOR) &&
4836 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4837 s->do_log(s);
4838 }
4839
Willy Tarreauc177ea72014-06-25 15:36:04 +0200[diff] [blame]4840 /* stop tracking content-based counters */
4841 session_stop_content_counters(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]4842 session_update_time_stats(s);
4843
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4844 s->logs.accept_date = date; /* user-visible date for logging */
4845 s->logs.tv_accept = now; /* corrected date for internal use */
4846 tv_zero(&s->logs.tv_request);
4847 s->logs.t_queue = -1;
4848 s->logs.t_connect = -1;
4849 s->logs.t_data = -1;
4850 s->logs.t_close = 0;
4851 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4852 s->logs.srv_queue_size = 0; /* we will get this number soon */
4853
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4854 s->logs.bytes_in = s->req->total = s->req->buf->i;
4855 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4856
4857 if (s->pend_pos)
4858 pendconn_free(s->pend_pos);
4859
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4860 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4861 if (s->flags & SN_CURR_SESS) {
4862 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4863 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4864 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4865 if (may_dequeue_tasks(objt_server(s->target), s->be))
4866 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4867 }
4868
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4869 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4870
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4871 /* only release our endpoint if we don't intend to reuse the
4872 * connection.
4873 */
4874 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4875 !si_conn_ready(s->req->cons)) {
4876 si_release_endpoint(s->req->cons);
4877 }
4878
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4879 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4880 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4881 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4882 s->req->cons->exp = TICK_ETERNITY;
Willy Tarreauc9200962013-12-31 23:03:09 +0100[diff] [blame]4883 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]4884 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);
4885 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]4886 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]4887 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE|SN_SRV_REUSED);
Cyril Bonté17f77072014-10-22 22:30:13 +0200[diff] [blame]4888 s->flags &= ~(SN_ERR_MASK|SN_FINST_MASK|SN_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4889
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4890 s->txn.meth = 0;
4891 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4892 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4893
4894 if (prev_status == 401 || prev_status == 407) {
4895 /* In HTTP keep-alive mode, if we receive a 401, we still have
4896 * a chance of being able to send the visitor again to the same
4897 * server over the same connection. This is required by some
4898 * broken protocols such as NTLM, and anyway whenever there is
4899 * an opportunity for sending the challenge to the proper place,
4900 * it's better to do it (at least it helps with debugging).
4901 */
4902 s->txn.flags |= TX_PREFER_LAST;
4903 }
4904
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4905 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4906 s->req->cons->flags |= SI_FL_INDEP_STR;
4907
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4908 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4909 s->req->flags |= CF_NEVER_WAIT;
4910 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4911 }
4912
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4913 /* if the request buffer is not empty, it means we're
4914 * about to process another request, so send pending
4915 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4916 * Just don't do this if the buffer is close to be full,
4917 * because the request will wait for it to flush a little
4918 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4919 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4920 if (s->req->buf->i) {
4921 if (s->rep->buf->o &&
4922 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4923 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]4924 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4925 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4926
4927 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4928 channel_auto_read(s->req);
4929 channel_auto_close(s->req);
4930 channel_auto_read(s->rep);
4931 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4932
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]4933 /* we're in keep-alive with an idle connection, monitor it */
4934 si_idle_conn(s->req->cons);
4935
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4936 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4937 s->rep->analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4938}
4939
4940
4941/* This function updates the request state machine according to the response
4942 * state machine and buffer flags. It returns 1 if it changes anything (flag
4943 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4944 * it is only used to find when a request/response couple is complete. Both
4945 * this function and its equivalent should loop until both return zero. It
4946 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4947 */
4948int http_sync_req_state(struct session *s)
4949{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4950 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4951 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4952 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4953 unsigned int old_state = txn->req.msg_state;
4954
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4955 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4956 return 0;
4957
4958 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4959 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4960 * We can shut the read side unless we want to abort_on_close,
4961 * or we have a POST request. The issue with POST requests is
4962 * that some browsers still send a CRLF after the request, and
4963 * this CRLF must be read so that it does not remain in the kernel
4964 * buffers, otherwise a close could cause an RST on some systems
4965 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4966 * Note that if we're using keep-alive on the client side, we'd
4967 * rather poll now and keep the polling enabled for the whole
4968 * session's life than enabling/disabling it between each
4969 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4970 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4971 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
4972 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
4973 !(s->be->options & PR_O_ABRT_CLOSE) &&
4974 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4975 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4976
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4977 /* if the server closes the connection, we want to immediately react
4978 * and close the socket to save packets and syscalls.
4979 */
4980 chn->cons->flags |= SI_FL_NOHALF;
4981
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4982 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4983 goto wait_other_side;
4984
4985 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4986 /* The server has not finished to respond, so we
4987 * don't want to move in order not to upset it.
4988 */
4989 goto wait_other_side;
4990 }
4991
4992 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4993 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4994 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4995 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4996 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4997 goto wait_other_side;
4998 }
4999
5000 /* When we get here, it means that both the request and the
5001 * response have finished receiving. Depending on the connection
5002 * mode, we'll have to wait for the last bytes to leave in either
5003 * direction, and sometimes for a close to be effective.
5004 */
5005
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5006 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5007 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5008 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5009 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5010 }
5011 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5012 /* Option forceclose is set, or either side wants to close,
5013 * let's enforce it now that we're not expecting any new
5014 * data to come. The caller knows the session is complete
5015 * once both states are CLOSED.
5016 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5017 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5018 channel_shutr_now(chn);
5019 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5020 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5021 }
5022 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5023 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5024 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5025 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5026 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5027 channel_auto_read(chn);
5028 txn->req.msg_state = HTTP_MSG_TUNNEL;
5029 chn->flags |= CF_NEVER_WAIT;
5030 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5031 }
5032
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5033 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5034 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5035 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5036
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5037 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5038 txn->req.msg_state = HTTP_MSG_CLOSING;
5039 goto http_msg_closing;
5040 }
5041 else {
5042 txn->req.msg_state = HTTP_MSG_CLOSED;
5043 goto http_msg_closed;
5044 }
5045 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5046 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5047 }
5048
5049 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5050 http_msg_closing:
5051 /* nothing else to forward, just waiting for the output buffer
5052 * to be empty and for the shutw_now to take effect.
5053 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5054 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5055 txn->req.msg_state = HTTP_MSG_CLOSED;
5056 goto http_msg_closed;
5057 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5058 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5059 txn->req.msg_state = HTTP_MSG_ERROR;
5060 goto wait_other_side;
5061 }
5062 }
5063
5064 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5065 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5066 /* see above in MSG_DONE why we only do this in these states */
5067 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5068 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5069 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5070 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5071 goto wait_other_side;
5072 }
5073
5074 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5075 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5076}
5077
5078
5079/* This function updates the response state machine according to the request
5080 * state machine and buffer flags. It returns 1 if it changes anything (flag
5081 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5082 * it is only used to find when a request/response couple is complete. Both
5083 * this function and its equivalent should loop until both return zero. It
5084 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5085 */
5086int http_sync_res_state(struct session *s)
5087{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5088 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5089 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5090 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5091 unsigned int old_state = txn->rsp.msg_state;
5092
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5093 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5094 return 0;
5095
5096 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5097 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5098 * still monitor the server connection for a possible close
5099 * while the request is being uploaded, so we don't disable
5100 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5101 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5102 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5103
5104 if (txn->req.msg_state == HTTP_MSG_ERROR)
5105 goto wait_other_side;
5106
5107 if (txn->req.msg_state < HTTP_MSG_DONE) {
5108 /* The client seems to still be sending data, probably
5109 * because we got an error response during an upload.
5110 * We have the choice of either breaking the connection
5111 * or letting it pass through. Let's do the later.
5112 */
5113 goto wait_other_side;
5114 }
5115
5116 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5117 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5118 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5119 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5120 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5121 goto wait_other_side;
5122 }
5123
5124 /* When we get here, it means that both the request and the
5125 * response have finished receiving. Depending on the connection
5126 * mode, we'll have to wait for the last bytes to leave in either
5127 * direction, and sometimes for a close to be effective.
5128 */
5129
5130 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5131 /* Server-close mode : shut read and wait for the request
5132 * side to close its output buffer. The caller will detect
5133 * when we're in DONE and the other is in CLOSED and will
5134 * catch that for the final cleanup.
5135 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5136 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5137 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5138 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5139 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5140 /* Option forceclose is set, or either side wants to close,
5141 * let's enforce it now that we're not expecting any new
5142 * data to come. The caller knows the session is complete
5143 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5144 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5145 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5146 channel_shutr_now(chn);
5147 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5148 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5149 }
5150 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5151 /* The last possible modes are keep-alive and tunnel. Tunnel will
5152 * need to forward remaining data. Keep-alive will need to monitor
5153 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5154 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5155 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5156 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5157 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5158 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5159 }
5160
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5161 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5162 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5163 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5164 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5165 goto http_msg_closing;
5166 }
5167 else {
5168 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5169 goto http_msg_closed;
5170 }
5171 }
5172 goto wait_other_side;
5173 }
5174
5175 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5176 http_msg_closing:
5177 /* nothing else to forward, just waiting for the output buffer
5178 * to be empty and for the shutw_now to take effect.
5179 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5180 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5181 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5182 goto http_msg_closed;
5183 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5184 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5185 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5186 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5187 if (objt_server(s->target))
5188 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5189 goto wait_other_side;
5190 }
5191 }
5192
5193 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5194 http_msg_closed:
5195 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5196 bi_erase(chn);
5197 channel_auto_close(chn);
5198 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5199 goto wait_other_side;
5200 }
5201
5202 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5203 /* We force the response to leave immediately if we're waiting for the
5204 * other side, since there is no pending shutdown to push it out.
5205 */
5206 if (!channel_is_empty(chn))
5207 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5208 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5209}
5210
5211
5212/* Resync the request and response state machines. Return 1 if either state
5213 * changes.
5214 */
5215int http_resync_states(struct session *s)
5216{
5217 struct http_txn *txn = &s->txn;
5218 int old_req_state = txn->req.msg_state;
5219 int old_res_state = txn->rsp.msg_state;
5220
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5221 http_sync_req_state(s);
5222 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5223 if (!http_sync_res_state(s))
5224 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5225 if (!http_sync_req_state(s))
5226 break;
5227 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5228
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5229 /* OK, both state machines agree on a compatible state.
5230 * There are a few cases we're interested in :
5231 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5232 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5233 * directions, so let's simply disable both analysers.
5234 * - HTTP_MSG_CLOSED on the response only means we must abort the
5235 * request.
5236 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5237 * with server-close mode means we've completed one request and we
5238 * must re-initialize the server connection.
5239 */
5240
5241 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5242 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5243 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5244 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
5245 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5246 channel_auto_close(s->req);
5247 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5248 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5249 channel_auto_close(s->rep);
5250 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5251 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5252 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
5253 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5254 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5255 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5256 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5257 channel_auto_close(s->rep);
5258 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5259 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5260 channel_abort(s->req);
5261 channel_auto_close(s->req);
5262 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5263 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5264 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5265 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5266 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5267 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5268 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5269 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5270 /* server-close/keep-alive: terminate this transaction,
5271 * possibly killing the server connection and reinitialize
5272 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5273 */
5274 http_end_txn_clean_session(s);
5275 }
5276
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5277 return txn->req.msg_state != old_req_state ||
5278 txn->rsp.msg_state != old_res_state;
5279}
5280
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5281/* This function is an analyser which forwards request body (including chunk
5282 * sizes if any). It is called as soon as we must forward, even if we forward
5283 * zero byte. The only situation where it must not be called is when we're in
5284 * tunnel mode and we want to forward till the close. It's used both to forward
5285 * remaining data and to resync after end of body. It expects the msg_state to
5286 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5287 * 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]5288 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5289 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5290 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5291int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5292{
5293 struct http_txn *txn = &s->txn;
5294 struct http_msg *msg = &s->txn.req;
5295
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5296 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5297 return 0;
5298
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5299 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]5300 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5301 /* Output closed while we were sending data. We must abort and
5302 * wake the other side up.
5303 */
5304 msg->msg_state = HTTP_MSG_ERROR;
5305 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5306 return 1;
5307 }
5308
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5309 /* Note that we don't have to send 100-continue back because we don't
5310 * need the data to complete our job, and it's up to the server to
5311 * decide whether to return 100, 417 or anything else in return of
5312 * an "Expect: 100-continue" header.
5313 */
5314
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5315 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5316 /* we have msg->sov which points to the first byte of message
5317 * body, and req->buf.p still points to the beginning of the
5318 * message. We forward the headers now, as we don't need them
5319 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5320 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5321 b_adv(req->buf, msg->sov);
5322 msg->next -= msg->sov;
5323 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5324
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5325 /* The previous analysers guarantee that the state is somewhere
5326 * between MSG_BODY and the first MSG_DATA. So msg->sol and
5327 * msg->next are always correct.
5328 */
5329 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
5330 if (msg->flags & HTTP_MSGF_TE_CHNK)
5331 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5332 else
5333 msg->msg_state = HTTP_MSG_DATA;
5334 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5335 }
5336
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5337 /* Some post-connect processing might want us to refrain from starting to
5338 * forward data. Currently, the only reason for this is "balance url_param"
5339 * whichs need to parse/process the request after we've enabled forwarding.
5340 */
5341 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
5342 if (!(s->rep->flags & CF_READ_ATTACHED)) {
5343 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5344 req->flags |= CF_WAKE_CONNECT;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5345 goto missing_data;
5346 }
5347 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5348 }
5349
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5350 /* in most states, we should abort in case of early close */
5351 channel_auto_close(req);
5352
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5353 if (req->to_forward) {
5354 /* We can't process the buffer's contents yet */
5355 req->flags |= CF_WAKE_WRITE;
5356 goto missing_data;
5357 }
5358
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5359 while (1) {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5360 if (msg->msg_state == HTTP_MSG_DATA) {
5361 /* must still forward */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5362 /* we may have some pending data starting at req->buf->p */
5363 if (msg->chunk_len > req->buf->i - msg->next) {
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5364 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5365 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5366 }
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5367 msg->next += msg->chunk_len;
5368 msg->chunk_len = 0;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5369
5370 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5371 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5372 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5373 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5374 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5375 }
5376 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5377 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5378 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5379 * TRAILERS state.
5380 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5381 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5382
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5383 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5384 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5385 else if (ret < 0) {
5386 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5387 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5388 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]5389 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5390 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5391 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5392 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5393 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5394 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5395 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5396
5397 if (ret == 0)
5398 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5399 else if (ret < 0) {
5400 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5401 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5402 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]5403 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5404 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5405 /* we're in MSG_CHUNK_SIZE now */
5406 }
5407 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5408 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5409
5410 if (ret == 0)
5411 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5412 else if (ret < 0) {
5413 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5414 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5415 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]5416 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5417 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5418 /* we're in HTTP_MSG_DONE now */
5419 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5420 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5421 int old_state = msg->msg_state;
5422
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5423 /* other states, DONE...TUNNEL */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5424
5425 /* we may have some pending data starting at req->buf->p
5426 * such as last chunk of data or trailers.
5427 */
5428 b_adv(req->buf, msg->next);
Willy Tarreaub4d05092014-09-01 20:35:55 +0200[diff] [blame]5429 if (unlikely(!(s->req->flags & CF_WROTE_DATA)))
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5430 msg->sov -= msg->next;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5431 msg->next = 0;
5432
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5433 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5434 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5435 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5436 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5437 if (http_resync_states(s)) {
5438 /* some state changes occurred, maybe the analyser
5439 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5440 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5441 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5442 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5443 /* request errors are most likely due to
5444 * the server aborting the transfer.
5445 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5446 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5447 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5448 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5449 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5450 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5451 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5452 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5453 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5454
5455 /* If "option abortonclose" is set on the backend, we
5456 * want to monitor the client's connection and forward
5457 * any shutdown notification to the server, which will
5458 * decide whether to close or to go on processing the
5459 * request.
5460 */
5461 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5462 channel_auto_read(req);
5463 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5464 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5465 else if (s->txn.meth == HTTP_METH_POST) {
5466 /* POST requests may require to read extra CRLF
5467 * sent by broken browsers and which could cause
5468 * an RST to be sent upon close on some systems
5469 * (eg: Linux).
5470 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5471 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5472 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5473
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5474 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5475 }
5476 }
5477
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5478 missing_data:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5479 /* we may have some pending data starting at req->buf->p */
5480 b_adv(req->buf, msg->next);
Willy Tarreaub4d05092014-09-01 20:35:55 +0200[diff] [blame]5481 if (unlikely(!(s->req->flags & CF_WROTE_DATA)))
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5482 msg->sov -= msg->next + MIN(msg->chunk_len, req->buf->i);
5483
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5484 msg->next = 0;
5485 msg->chunk_len -= channel_forward(req, msg->chunk_len);
5486
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5487 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5488 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5489 if (!(s->flags & SN_ERR_MASK))
5490 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5491 if (!(s->flags & SN_FINST_MASK)) {
5492 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5493 s->flags |= SN_FINST_H;
5494 else
5495 s->flags |= SN_FINST_D;
5496 }
5497
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5498 s->fe->fe_counters.cli_aborts++;
5499 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5500 if (objt_server(s->target))
5501 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5502
5503 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5504 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5505
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5506 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5507 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5508 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5509
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5510 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5511 * 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]5512 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5513 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5514 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5515
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5516 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5517 * 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]5518 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5519 * modes are already handled by the stream sock layer. We must not do
5520 * this in content-length mode because it could present the MSG_MORE
5521 * flag with the last block of forwarded data, which would cause an
5522 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5523 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5524 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5525 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5526
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5527 return 0;
5528
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5529 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5530 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5531 if (s->listener->counters)
5532 s->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5533
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5534 return_bad_req_stats_ok:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5535 /* we may have some pending data starting at req->buf->p */
5536 b_adv(req->buf, msg->next);
5537 msg->next = 0;
5538
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5539 txn->req.msg_state = HTTP_MSG_ERROR;
5540 if (txn->status) {
5541 /* Note: we don't send any error if some data were already sent */
5542 stream_int_retnclose(req->prod, NULL);
5543 } else {
5544 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5545 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5546 }
5547 req->analysers = 0;
5548 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]5549
5550 if (!(s->flags & SN_ERR_MASK))
5551 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5552 if (!(s->flags & SN_FINST_MASK)) {
5553 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5554 s->flags |= SN_FINST_H;
5555 else
5556 s->flags |= SN_FINST_D;
5557 }
5558 return 0;
5559
5560 aborted_xfer:
5561 txn->req.msg_state = HTTP_MSG_ERROR;
5562 if (txn->status) {
5563 /* Note: we don't send any error if some data were already sent */
5564 stream_int_retnclose(req->prod, NULL);
5565 } else {
5566 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5567 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5568 }
5569 req->analysers = 0;
5570 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5571
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5572 s->fe->fe_counters.srv_aborts++;
5573 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5574 if (objt_server(s->target))
5575 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5576
5577 if (!(s->flags & SN_ERR_MASK))
5578 s->flags |= SN_ERR_SRVCL;
5579 if (!(s->flags & SN_FINST_MASK)) {
5580 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5581 s->flags |= SN_FINST_H;
5582 else
5583 s->flags |= SN_FINST_D;
5584 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5585 return 0;
5586}
5587
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5588/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5589 * processing can continue on next analysers, or zero if it either needs more
5590 * data or wants to immediately abort the response (eg: timeout, error, ...). It
5591 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
5592 * when it has nothing left to do, and may remove any analyser when it wants to
5593 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5594 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5595int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5596{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5597 struct http_txn *txn = &s->txn;
5598 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5599 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5600 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5601 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5602 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5603
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5604 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]5605 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5606 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5607 rep,
5608 rep->rex, rep->wex,
5609 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5610 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5611 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5612
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5613 /*
5614 * Now parse the partial (or complete) lines.
5615 * We will check the response syntax, and also join multi-line
5616 * headers. An index of all the lines will be elaborated while
5617 * parsing.
5618 *
5619 * For the parsing, we use a 28 states FSM.
5620 *
5621 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5622 * rep->buf->p = beginning of response
5623 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5624 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5625 * msg->eol = end of current header or line (LF or CRLF)
5626 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5627 */
5628
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5629 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5630 /* There's a protected area at the end of the buffer for rewriting
5631 * purposes. We don't want to start to parse the request if the
5632 * protected area is affected, because we may have to move processed
5633 * data later, which is much more complicated.
5634 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5635 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5636 if (unlikely(!channel_reserved(rep))) {
5637 /* some data has still not left the buffer, wake us once that's done */
5638 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5639 goto abort_response;
5640 channel_dont_close(rep);
5641 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5642 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5643 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5644 }
5645
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5646 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5647 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5648 buffer_slow_realign(rep->buf);
5649
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5650 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5651 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5652 }
5653
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5654 /* 1: we might have to print this header in debug mode */
5655 if (unlikely((global.mode & MODE_DEBUG) &&
5656 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau8767b132014-10-21 19:36:09 +0200[diff] [blame]5657 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5658 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5659
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5660 sol = rep->buf->p;
5661 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5662 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5663
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5664 sol += hdr_idx_first_pos(&txn->hdr_idx);
5665 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5666
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5667 while (cur_idx) {
5668 eol = sol + txn->hdr_idx.v[cur_idx].len;
5669 debug_hdr("srvhdr", s, sol, eol);
5670 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5671 cur_idx = txn->hdr_idx.v[cur_idx].next;
5672 }
5673 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5674
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5675 /*
5676 * Now we quickly check if we have found a full valid response.
5677 * If not so, we check the FD and buffer states before leaving.
5678 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5679 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5680 * responses are checked first.
5681 *
5682 * Depending on whether the client is still there or not, we
5683 * may send an error response back or not. Note that normally
5684 * we should only check for HTTP status there, and check I/O
5685 * errors somewhere else.
5686 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5687
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5688 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5689 /* Invalid response */
5690 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5691 /* we detected a parsing error. We want to archive this response
5692 * in the dedicated proxy area for later troubleshooting.
5693 */
5694 hdr_response_bad:
5695 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5696 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]5697
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5698 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5699 if (objt_server(s->target)) {
5700 objt_server(s->target)->counters.failed_resp++;
5701 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5702 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5703 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5704 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5705 rep->analysers = 0;
5706 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5707 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5708 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5709 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5710
5711 if (!(s->flags & SN_ERR_MASK))
5712 s->flags |= SN_ERR_PRXCOND;
5713 if (!(s->flags & SN_FINST_MASK))
5714 s->flags |= SN_FINST_H;
5715
5716 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5717 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5718
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5719 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5720 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5721 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5722 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5723 goto hdr_response_bad;
5724 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5725
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5726 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5727 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5728 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5729 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]5730 else if (txn->flags & TX_NOT_FIRST)
5731 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5732
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5733 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5734 if (objt_server(s->target)) {
5735 objt_server(s->target)->counters.failed_resp++;
5736 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5737 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5738
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5739 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5740 rep->analysers = 0;
5741 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5742 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5743 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5744 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5745
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5746 if (!(s->flags & SN_ERR_MASK))
5747 s->flags |= SN_ERR_SRVCL;
5748 if (!(s->flags & SN_FINST_MASK))
5749 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5750 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5751 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5752
Willy Tarreau2a4f5112014-06-23 15:22:31 +0200[diff] [blame]5753 /* read timeout : return a 504 to the client. */
5754 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5755 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5756 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]5757 else if (txn->flags & TX_NOT_FIRST)
5758 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5759
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5760 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5761 if (objt_server(s->target)) {
5762 objt_server(s->target)->counters.failed_resp++;
5763 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5764 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5765
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5766 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5767 rep->analysers = 0;
5768 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5769 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5770 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5771 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5772
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5773 if (!(s->flags & SN_ERR_MASK))
5774 s->flags |= SN_ERR_SRVTO;
5775 if (!(s->flags & SN_FINST_MASK))
5776 s->flags |= SN_FINST_H;
5777 return 0;
5778 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5779
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5780 /* client abort with an abortonclose */
5781 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5782 s->fe->fe_counters.cli_aborts++;
5783 s->be->be_counters.cli_aborts++;
5784 if (objt_server(s->target))
5785 objt_server(s->target)->counters.cli_aborts++;
5786
5787 rep->analysers = 0;
5788 channel_auto_close(rep);
5789
5790 txn->status = 400;
5791 bi_erase(rep);
5792 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5793
5794 if (!(s->flags & SN_ERR_MASK))
5795 s->flags |= SN_ERR_CLICL;
5796 if (!(s->flags & SN_FINST_MASK))
5797 s->flags |= SN_FINST_H;
5798
5799 /* process_session() will take care of the error */
5800 return 0;
5801 }
5802
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5803 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5804 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5805 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5806 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]5807 else if (txn->flags & TX_NOT_FIRST)
5808 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5809
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5810 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5811 if (objt_server(s->target)) {
5812 objt_server(s->target)->counters.failed_resp++;
5813 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5814 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5815
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5816 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5817 rep->analysers = 0;
5818 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5819 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5820 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5821 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5822
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5823 if (!(s->flags & SN_ERR_MASK))
5824 s->flags |= SN_ERR_SRVCL;
5825 if (!(s->flags & SN_FINST_MASK))
5826 s->flags |= SN_FINST_H;
5827 return 0;
5828 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5829
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5830 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5831 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5832 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5833 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]5834 else if (txn->flags & TX_NOT_FIRST)
5835 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5836
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5837 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5838 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5839 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5840
5841 if (!(s->flags & SN_ERR_MASK))
5842 s->flags |= SN_ERR_CLICL;
5843 if (!(s->flags & SN_FINST_MASK))
5844 s->flags |= SN_FINST_H;
5845
5846 /* process_session() will take care of the error */
5847 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5848 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5849
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5850 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5851 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5852 return 0;
5853 }
5854
5855 /* More interesting part now : we know that we have a complete
5856 * response which at least looks like HTTP. We have an indicator
5857 * of each header's length, so we can parse them quickly.
5858 */
5859
5860 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5861 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]5862
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5863 /*
5864 * 1: get the status code
5865 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5866 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5867 if (n < 1 || n > 5)
5868 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5869 /* when the client triggers a 4xx from the server, it's most often due
5870 * to a missing object or permission. These events should be tracked
5871 * because if they happen often, it may indicate a brute force or a
5872 * vulnerability scan.
5873 */
5874 if (n == 4)
5875 session_inc_http_err_ctr(s);
5876
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5877 if (objt_server(s->target))
5878 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5879
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5880 /* check if the response is HTTP/1.1 or above */
5881 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5882 ((rep->buf->p[5] > '1') ||
5883 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5884 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5885
5886 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5887 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]5888
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5889 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5890 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5891
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5892 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]5893
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5894 /* Adjust server's health based on status code. Note: status codes 501
5895 * and 505 are triggered on demand by client request, so we must not
5896 * count them as server failures.
5897 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5898 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5899 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5900 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5901 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5902 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5903 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5904
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5905 /*
5906 * 2: check for cacheability.
5907 */
5908
5909 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5910 case 100:
5911 /*
5912 * We may be facing a 100-continue response, in which case this
5913 * is not the right response, and we're waiting for the next one.
5914 * Let's allow this response to go to the client and wait for the
5915 * next one.
5916 */
5917 hdr_idx_init(&txn->hdr_idx);
5918 msg->next -= channel_forward(rep, msg->next);
5919 msg->msg_state = HTTP_MSG_RPBEFORE;
5920 txn->status = 0;
5921 s->logs.t_data = -1; /* was not a response yet */
5922 goto next_one;
5923
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5924 case 200:
5925 case 203:
5926 case 206:
5927 case 300:
5928 case 301:
5929 case 410:
5930 /* RFC2616 @13.4:
5931 * "A response received with a status code of
5932 * 200, 203, 206, 300, 301 or 410 MAY be stored
5933 * by a cache (...) unless a cache-control
5934 * directive prohibits caching."
5935 *
5936 * RFC2616 @9.5: POST method :
5937 * "Responses to this method are not cacheable,
5938 * unless the response includes appropriate
5939 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5940 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5941 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5942 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5943 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5944 break;
5945 default:
5946 break;
5947 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5948
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5949 /*
5950 * 3: we may need to capture headers
5951 */
5952 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5953 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5954 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5955 txn->rsp.cap, s->fe->rsp_cap);
5956
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame^]5957 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
5958 * by RFC7230#3.3.3 :
5959 *
5960 * The length of a message body is determined by one of the following
5961 * (in order of precedence):
5962 *
5963 * 1. Any response to a HEAD request and any response with a 1xx
5964 * (Informational), 204 (No Content), or 304 (Not Modified) status
5965 * code is always terminated by the first empty line after the
5966 * header fields, regardless of the header fields present in the
5967 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5968 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame^]5969 * 2. Any 2xx (Successful) response to a CONNECT request implies that
5970 * the connection will become a tunnel immediately after the empty
5971 * line that concludes the header fields. A client MUST ignore any
5972 * Content-Length or Transfer-Encoding header fields received in
5973 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5974 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame^]5975 * 3. If a Transfer-Encoding header field is present and the chunked
5976 * transfer coding (Section 4.1) is the final encoding, the message
5977 * body length is determined by reading and decoding the chunked
5978 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5979 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame^]5980 * If a Transfer-Encoding header field is present in a response and
5981 * the chunked transfer coding is not the final encoding, the
5982 * message body length is determined by reading the connection until
5983 * it is closed by the server. If a Transfer-Encoding header field
5984 * is present in a request and the chunked transfer coding is not
5985 * the final encoding, the message body length cannot be determined
5986 * reliably; the server MUST respond with the 400 (Bad Request)
5987 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5988 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame^]5989 * If a message is received with both a Transfer-Encoding and a
5990 * Content-Length header field, the Transfer-Encoding overrides the
5991 * Content-Length. Such a message might indicate an attempt to
5992 * perform request smuggling (Section 9.5) or response splitting
5993 * (Section 9.4) and ought to be handled as an error. A sender MUST
5994 * remove the received Content-Length field prior to forwarding such
5995 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5996 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame^]5997 * 4. If a message is received without Transfer-Encoding and with
5998 * either multiple Content-Length header fields having differing
5999 * field-values or a single Content-Length header field having an
6000 * invalid value, then the message framing is invalid and the
6001 * recipient MUST treat it as an unrecoverable error. If this is a
6002 * request message, the server MUST respond with a 400 (Bad Request)
6003 * status code and then close the connection. If this is a response
6004 * message received by a proxy, the proxy MUST close the connection
6005 * to the server, discard the received response, and send a 502 (Bad
6006 * Gateway) response to the client. If this is a response message
6007 * received by a user agent, the user agent MUST close the
6008 * connection to the server and discard the received response.
6009 *
6010 * 5. If a valid Content-Length header field is present without
6011 * Transfer-Encoding, its decimal value defines the expected message
6012 * body length in octets. If the sender closes the connection or
6013 * the recipient times out before the indicated number of octets are
6014 * received, the recipient MUST consider the message to be
6015 * incomplete and close the connection.
6016 *
6017 * 6. If this is a request message and none of the above are true, then
6018 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6019 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame^]6020 * 7. Otherwise, this is a response message without a declared message
6021 * body length, so the message body length is determined by the
6022 * number of octets received prior to the server closing the
6023 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6024 */
6025
6026 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6027 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6028 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6029 * FIXME: should we parse anyway and return an error on chunked encoding ?
6030 */
6031 if (txn->meth == HTTP_METH_HEAD ||
6032 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6033 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6034 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]6035 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6036 goto skip_content_length;
6037 }
6038
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6039 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6040 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6041 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6042 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6043 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6044 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6045 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6046 /* bad transfer-encoding (chunked followed by something else) */
6047 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6048 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6049 break;
6050 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6051 }
6052
Willy Tarreaudfa3d922015-04-30 10:57:51 +0200[diff] [blame]6053 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6054 ctx.idx = 0;
Willy Tarreaudfa3d922015-04-30 10:57:51 +0200[diff] [blame]6055 if (msg->flags & HTTP_MSGF_TE_CHNK) {
6056 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6057 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6058 }
6059 else while (!use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6060 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6061 signed long long cl;
6062
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6063 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6064 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6065 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6066 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6067
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6068 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6069 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6070 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6071 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6072
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6073 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6074 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6075 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6076 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6077
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6078 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6079 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6080 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6081 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6082
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6083 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6084 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6085 }
6086
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6087 if (s->fe->comp || s->be->comp)
6088 select_compression_response_header(s, rep->buf);
6089
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6090skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6091 /* Now we have to check if we need to modify the Connection header.
6092 * This is more difficult on the response than it is on the request,
6093 * because we can have two different HTTP versions and we don't know
6094 * how the client will interprete a response. For instance, let's say
6095 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6096 * HTTP/1.1 response without any header. Maybe it will bound itself to
6097 * HTTP/1.0 because it only knows about it, and will consider the lack
6098 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6099 * the lack of header as a keep-alive. Thus we will use two flags
6100 * indicating how a request MAY be understood by the client. In case
6101 * of multiple possibilities, we'll fix the header to be explicit. If
6102 * ambiguous cases such as both close and keepalive are seen, then we
6103 * will fall back to explicit close. Note that we won't take risks with
6104 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6105 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6106 */
6107
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6108 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6109 txn->status == 101)) {
6110 /* Either we've established an explicit tunnel, or we're
6111 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6112 * to understand the next protocols. We have to switch to tunnel
6113 * mode, so that we transfer the request and responses then let
6114 * this protocol pass unmodified. When we later implement specific
6115 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6116 * header which contains information about that protocol for
6117 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6118 */
6119 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6120 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6121 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6122 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6123 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6124 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6125 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6126
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6127 /* this situation happens when combining pretend-keepalive with httpclose. */
6128 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6129 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6130 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6131 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6132
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6133 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6134 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6135 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6136 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6137
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6138 /* now adjust header transformations depending on current state */
6139 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6140 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6141 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6142 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6143 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6144 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6145 else { /* SCL / KAL */
6146 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6147 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6148 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6149 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6150
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6151 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6152 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6153
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6154 /* Some keep-alive responses are converted to Server-close if
6155 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6156 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6157 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6158 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6159 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6160 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6161 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6162 }
6163
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6164 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6165 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6166
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6167 /* end of job, return OK */
6168 rep->analysers &= ~an_bit;
6169 rep->analyse_exp = TICK_ETERNITY;
6170 channel_auto_close(rep);
6171 return 1;
6172
6173 abort_keep_alive:
6174 /* A keep-alive request to the server failed on a network error.
6175 * The client is required to retry. We need to close without returning
6176 * any other information so that the client retries.
6177 */
6178 txn->status = 0;
6179 rep->analysers = 0;
6180 s->req->analysers = 0;
6181 channel_auto_close(rep);
6182 s->logs.logwait = 0;
6183 s->logs.level = 0;
6184 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
6185 bi_erase(rep);
6186 stream_int_retnclose(rep->cons, NULL);
6187 return 0;
6188}
6189
6190/* This function performs all the processing enabled for the current response.
6191 * It normally returns 1 unless it wants to break. It relies on buffers flags,
6192 * and updates s->rep->analysers. It might make sense to explode it into several
6193 * other functions. It works like process_request (see indications above).
6194 */
6195int http_process_res_common(struct session *s, struct channel *rep, int an_bit, struct proxy *px)
6196{
6197 struct http_txn *txn = &s->txn;
6198 struct http_msg *msg = &txn->rsp;
6199 struct proxy *cur_proxy;
6200 struct cond_wordlist *wl;
6201 struct http_res_rule *http_res_last_rule = NULL;
6202
6203 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
6204 now_ms, __FUNCTION__,
6205 s,
6206 rep,
6207 rep->rex, rep->wex,
6208 rep->flags,
6209 rep->buf->i,
6210 rep->analysers);
6211
6212 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6213 return 0;
6214
6215 rep->analysers &= ~an_bit;
6216 rep->analyse_exp = TICK_ETERNITY;
6217
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6218 /* The stats applet needs to adjust the Connection header but we don't
6219 * apply any filter there.
6220 */
6221 if (unlikely(objt_applet(s->target) == &http_stats_applet))
6222 goto skip_filters;
6223
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6224 /*
6225 * We will have to evaluate the filters.
6226 * As opposed to version 1.2, now they will be evaluated in the
6227 * filters order and not in the header order. This means that
6228 * each filter has to be validated among all headers.
6229 *
6230 * Filters are tried with ->be first, then with ->fe if it is
6231 * different from ->be.
6232 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6233
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6234 cur_proxy = s->be;
6235 while (1) {
6236 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6237
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6238 /* evaluate http-response rules */
6239 if (!http_res_last_rule)
6240 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]6241
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6242 /* try headers filters */
6243 if (rule_set->rsp_exp != NULL) {
6244 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6245 return_bad_resp:
6246 if (objt_server(s->target)) {
6247 objt_server(s->target)->counters.failed_resp++;
6248 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6249 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6250 s->be->be_counters.failed_resp++;
6251 return_srv_prx_502:
6252 rep->analysers = 0;
6253 txn->status = 502;
6254 s->logs.t_data = -1; /* was not a valid response */
6255 rep->prod->flags |= SI_FL_NOLINGER;
6256 bi_erase(rep);
6257 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
6258 if (!(s->flags & SN_ERR_MASK))
6259 s->flags |= SN_ERR_PRXCOND;
6260 if (!(s->flags & SN_FINST_MASK))
6261 s->flags |= SN_FINST_H;
6262 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6263 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6264 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6265
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6266 /* has the response been denied ? */
6267 if (txn->flags & TX_SVDENY) {
6268 if (objt_server(s->target))
6269 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6270
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6271 s->be->be_counters.denied_resp++;
6272 s->fe->fe_counters.denied_resp++;
6273 if (s->listener->counters)
6274 s->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6275
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6276 goto return_srv_prx_502;
6277 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6278
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6279 /* add response headers from the rule sets in the same order */
6280 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6281 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6282 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6283 if (wl->cond) {
6284 int ret = acl_exec_cond(wl->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
6285 ret = acl_pass(ret);
6286 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6287 ret = !ret;
6288 if (!ret)
6289 continue;
6290 }
6291 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6292 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6293 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6294
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6295 /* check whether we're already working on the frontend */
6296 if (cur_proxy == s->fe)
6297 break;
6298 cur_proxy = s->fe;
6299 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6300
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6301 /* OK that's all we can do for 1xx responses */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6302 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6303 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6304
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6305 /*
6306 * Now check for a server cookie.
6307 */
6308 if (s->be->cookie_name || s->be->appsession_name || s->fe->capture_name ||
6309 (s->be->options & PR_O_CHK_CACHE))
6310 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6311
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6312 /*
6313 * Check for cache-control or pragma headers if required.
6314 */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6315 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]6316 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6317
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6318 /*
6319 * Add server cookie in the response if needed
6320 */
6321 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6322 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
6323 (!(s->flags & SN_DIRECT) ||
6324 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6325 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6326 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6327 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6328 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
6329 !(s->flags & SN_IGNORE_PRST)) {
6330 /* the server is known, it's not the one the client requested, or the
6331 * cookie's last seen date needs to be refreshed. We have to
6332 * insert a set-cookie here, except if we want to insert only on POST
6333 * requests and this one isn't. Note that servers which don't have cookies
6334 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6335 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6336 if (!objt_server(s->target)->cookie) {
6337 chunk_printf(&trash,
6338 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6339 s->be->cookie_name);
6340 }
6341 else {
6342 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]6343
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6344 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6345 /* emit last_date, which is mandatory */
6346 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6347 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6348 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6349
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6350 if (s->be->cookie_maxlife) {
6351 /* emit first_date, which is either the original one or
6352 * the current date.
6353 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6354 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6355 s30tob64(txn->cookie_first_date ?
6356 txn->cookie_first_date >> 2 :
6357 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6358 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6359 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6360 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6361 chunk_appendf(&trash, "; path=/");
6362 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6363
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6364 if (s->be->cookie_domain)
6365 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6366
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6367 if (s->be->ck_opts & PR_CK_HTTPONLY)
6368 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6369
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6370 if (s->be->ck_opts & PR_CK_SECURE)
6371 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6372
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6373 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6374 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6375
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6376 txn->flags &= ~TX_SCK_MASK;
6377 if (objt_server(s->target)->cookie && (s->flags & SN_DIRECT))
6378 /* the server did not change, only the date was updated */
6379 txn->flags |= TX_SCK_UPDATED;
6380 else
6381 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6382
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6383 /* Here, we will tell an eventual cache on the client side that we don't
6384 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6385 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6386 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6387 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6388 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6389
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6390 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6391
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6392 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6393 "Cache-control: private", 22) < 0))
6394 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6395 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6396 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6397
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6398 /*
6399 * Check if result will be cacheable with a cookie.
6400 * We'll block the response if security checks have caught
6401 * nasty things such as a cacheable cookie.
6402 */
6403 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6404 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6405 (s->be->options & PR_O_CHK_CACHE)) {
6406 /* we're in presence of a cacheable response containing
6407 * a set-cookie header. We'll block it as requested by
6408 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6409 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6410 if (objt_server(s->target))
6411 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6412
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6413 s->be->be_counters.denied_resp++;
6414 s->fe->fe_counters.denied_resp++;
6415 if (s->listener->counters)
6416 s->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6417
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6418 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6419 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6420 send_log(s->be, LOG_ALERT,
6421 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6422 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6423 goto return_srv_prx_502;
6424 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6425
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6426 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6427 /*
6428 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6429 * If an "Upgrade" token is found, the header is left untouched in order
6430 * 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]6431 * if anything but "Upgrade" is present in the Connection header. We don't
6432 * want to touch any 101 response either since it's switching to another
6433 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6434 */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6435 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6436 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
6437 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6438 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6439 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6440
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6441 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6442 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6443 /* we want a keep-alive response here. Keep-alive header
6444 * required if either side is not 1.1.
6445 */
6446 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6447 want_flags |= TX_CON_KAL_SET;
6448 }
6449 else {
6450 /* we want a close response here. Close header required if
6451 * the server is 1.1, regardless of the client.
6452 */
6453 if (msg->flags & HTTP_MSGF_VER_11)
6454 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6455 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6456
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6457 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6458 http_change_connection_header(txn, msg, want_flags);
6459 }
6460
6461 skip_header_mangling:
6462 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
6463 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
6464 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6465
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6466 /* if the user wants to log as soon as possible, without counting
6467 * bytes from the server, then this is the right moment. We have
6468 * to temporarily assign bytes_out to log what we currently have.
6469 */
6470 if (!LIST_ISEMPTY(&s->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
6471 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6472 s->logs.bytes_out = txn->rsp.eoh;
6473 s->do_log(s);
6474 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6475 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6476 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6477}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6478
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6479/* This function is an analyser which forwards response body (including chunk
6480 * sizes if any). It is called as soon as we must forward, even if we forward
6481 * zero byte. The only situation where it must not be called is when we're in
6482 * tunnel mode and we want to forward till the close. It's used both to forward
6483 * remaining data and to resync after end of body. It expects the msg_state to
6484 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
6485 * 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]6486 *
6487 * It is capable of compressing response data both in content-length mode and
6488 * in chunked mode. The state machines follows different flows depending on
6489 * whether content-length and chunked modes are used, since there are no
6490 * trailers in content-length :
6491 *
6492 * chk-mode cl-mode
6493 * ,----- BODY -----.
6494 * / \
6495 * V size > 0 V chk-mode
6496 * .--> SIZE -------------> DATA -------------> CRLF
6497 * | | size == 0 | last byte |
6498 * | v final crlf v inspected |
6499 * | TRAILERS -----------> DONE |
6500 * | |
6501 * `----------------------------------------------'
6502 *
6503 * Compression only happens in the DATA state, and must be flushed in final
6504 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6505 * is performed at once on final states for all bytes parsed, or when leaving
6506 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6507 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6508int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6509{
6510 struct http_txn *txn = &s->txn;
6511 struct http_msg *msg = &s->txn.rsp;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6512 static struct buffer *tmpbuf = NULL;
6513 int compressing = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6514 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6515
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6516 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6517 return 0;
6518
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6519 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]6520 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]6521 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6522 /* Output closed while we were sending data. We must abort and
6523 * wake the other side up.
6524 */
6525 msg->msg_state = HTTP_MSG_ERROR;
6526 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6527 return 1;
6528 }
6529
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6530 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6531 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6532
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]6533 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6534 /* we have msg->sov which points to the first byte of message
6535 * body, and res->buf.p still points to the beginning of the
6536 * message. We forward the headers now, as we don't need them
6537 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6538 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6539 b_adv(res->buf, msg->sov);
6540 msg->next -= msg->sov;
6541 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6542
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6543 /* The previous analysers guarantee that the state is somewhere
6544 * between MSG_BODY and the first MSG_DATA. So msg->sol and
6545 * msg->next are always correct.
6546 */
6547 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
6548 if (msg->flags & HTTP_MSGF_TE_CHNK)
6549 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6550 else
6551 msg->msg_state = HTTP_MSG_DATA;
6552 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6553 }
6554
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6555 if (res->to_forward) {
6556 /* We can't process the buffer's contents yet */
6557 res->flags |= CF_WAKE_WRITE;
6558 goto missing_data;
6559 }
6560
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6561 if (unlikely(s->comp_algo != NULL) && msg->msg_state < HTTP_MSG_TRAILERS) {
6562 /* We need a compression buffer in the DATA state to put the
6563 * output of compressed data, and in CRLF state to let the
6564 * TRAILERS state finish the job of removing the trailing CRLF.
6565 */
6566 if (unlikely(tmpbuf == NULL)) {
6567 /* this is the first time we need the compression buffer */
6568 tmpbuf = pool_alloc2(pool2_buffer);
6569 if (tmpbuf == NULL)
6570 goto aborted_xfer; /* no memory */
6571 }
6572
6573 ret = http_compression_buffer_init(s, res->buf, tmpbuf);
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6574 if (ret < 0) {
6575 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6576 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6577 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6578 compressing = 1;
6579 }
6580
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6581 while (1) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6582 switch (msg->msg_state - HTTP_MSG_DATA) {
6583 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6584 /* we may have some pending data starting at res->buf->p */
6585 if (unlikely(s->comp_algo)) {
Willy Tarreau7f2f8d52014-04-18 00:20:14 +0200[diff] [blame]6586 ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6587 if (ret < 0)
6588 goto aborted_xfer;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6589
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6590 if (msg->chunk_len) {
6591 /* input empty or output full */
6592 if (res->buf->i > msg->next)
6593 res->flags |= CF_WAKE_WRITE;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6594 goto missing_data;
6595 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6596 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6597 else {
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6598 if (msg->chunk_len > res->buf->i - msg->next) {
6599 /* output full */
6600 res->flags |= CF_WAKE_WRITE;
6601 goto missing_data;
6602 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6603 msg->next += msg->chunk_len;
6604 msg->chunk_len = 0;
6605 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6606
6607 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6608 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6609 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6610 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6611 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6612 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6613 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6614 /* fall through for HTTP_MSG_CHUNK_CRLF */
6615
6616 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6617 /* we want the CRLF after the data */
6618
6619 ret = http_skip_chunk_crlf(msg);
6620 if (ret == 0)
6621 goto missing_data;
6622 else if (ret < 0) {
6623 if (msg->err_pos >= 0)
6624 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
6625 goto return_bad_res;
6626 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6627 /* we're in MSG_CHUNK_SIZE now, fall through */
6628
6629 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6630 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6631 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6632 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6633 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6634
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6635 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6636 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6637 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6638 else if (ret < 0) {
6639 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6640 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]6641 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6642 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6643 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6644 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6645
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6646 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6647 if (unlikely(compressing)) {
6648 /* we need to flush output contents before syncing FSMs */
6649 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6650 compressing = 0;
6651 }
6652
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6653 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6654 if (ret == 0)
6655 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6656 else if (ret < 0) {
6657 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6658 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]6659 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6660 }
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6661 /* we're in HTTP_MSG_DONE now, fall through */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6662
6663 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6664 /* other states, DONE...TUNNEL */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6665 if (unlikely(compressing)) {
6666 /* we need to flush output contents before syncing FSMs */
6667 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6668 compressing = 0;
6669 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6670
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6671 /* we may have some pending data starting at res->buf->p
6672 * such as a last chunk of data or trailers.
6673 */
6674 b_adv(res->buf, msg->next);
6675 msg->next = 0;
6676
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6677 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6678 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6679 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6680 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6681 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6682
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6683 if (http_resync_states(s)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6684 /* some state changes occurred, maybe the analyser
6685 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6686 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6687 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6688 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6689 /* response errors are most likely due to
6690 * the client aborting the transfer.
6691 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6692 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6693 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6694 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6695 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6696 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6697 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6698 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6699 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6700 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6701 }
6702 }
6703
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6704 missing_data:
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6705 /* we may have some pending data starting at res->buf->p */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6706 if (unlikely(compressing)) {
6707 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6708 compressing = 0;
6709 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6710
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6711 if ((s->comp_algo == NULL || msg->msg_state >= HTTP_MSG_TRAILERS)) {
6712 b_adv(res->buf, msg->next);
6713 msg->next = 0;
6714 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6715 }
6716
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6717 if (res->flags & CF_SHUTW)
6718 goto aborted_xfer;
6719
6720 /* stop waiting for data if the input is closed before the end. If the
6721 * client side was already closed, it means that the client has aborted,
6722 * so we don't want to count this as a server abort. Otherwise it's a
6723 * server abort.
6724 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6725 if (res->flags & CF_SHUTR) {
Willy Tarreaub2c6a782014-04-23 20:29:01 +0200[diff] [blame]6726 if ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6727 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6728 if (!(s->flags & SN_ERR_MASK))
6729 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6730 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6731 if (objt_server(s->target))
6732 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6733 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6734 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6735
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6736 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6737 if (!s->req->analysers)
6738 goto return_bad_res;
6739
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6740 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6741 * 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]6742 * Similarly, with keep-alive on the client side, we don't want to forward a
6743 * close.
6744 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6745 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6746 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6747 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6748 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6749
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6750 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6751 * 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]6752 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6753 * modes are already handled by the stream sock layer. We must not do
6754 * this in content-length mode because it could present the MSG_MORE
6755 * flag with the last block of forwarded data, which would cause an
6756 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6757 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6758 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6759 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6760
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6761 /* the session handler will take care of timeouts and errors */
6762 return 0;
6763
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6764 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6765 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6766 if (objt_server(s->target))
6767 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6768
6769 return_bad_res_stats_ok:
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]6770 if (unlikely(compressing)) {
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6771 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]6772 compressing = 0;
6773 }
6774
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6775 /* we may have some pending data starting at res->buf->p */
6776 if (s->comp_algo == NULL) {
6777 b_adv(res->buf, msg->next);
6778 msg->next = 0;
6779 }
6780
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6781 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6782 /* don't send any error message as we're in the body */
6783 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6784 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6785 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]6786 if (objt_server(s->target))
6787 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6788
6789 if (!(s->flags & SN_ERR_MASK))
6790 s->flags |= SN_ERR_PRXCOND;
6791 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6792 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6793 return 0;
6794
6795 aborted_xfer:
Willy Tarreau6fef8ae2014-04-22 21:22:06 +0200[diff] [blame]6796 if (unlikely(compressing)) {
6797 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
6798 compressing = 0;
6799 }
6800
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6801 txn->rsp.msg_state = HTTP_MSG_ERROR;
6802 /* don't send any error message as we're in the body */
6803 stream_int_retnclose(res->cons, NULL);
6804 res->analysers = 0;
6805 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6806
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6807 s->fe->fe_counters.cli_aborts++;
6808 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6809 if (objt_server(s->target))
6810 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6811
6812 if (!(s->flags & SN_ERR_MASK))
6813 s->flags |= SN_ERR_CLICL;
6814 if (!(s->flags & SN_FINST_MASK))
6815 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6816 return 0;
6817}
6818
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6819/* Iterate the same filter through all request headers.
6820 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6821 * Since it can manage the switch to another backend, it updates the per-proxy
6822 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6823 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6824int 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]6825{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6826 char *cur_ptr, *cur_end, *cur_next;
6827 int cur_idx, old_idx, last_hdr;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6828 struct http_txn *txn = &s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6829 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6830 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6831
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6832 last_hdr = 0;
6833
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6834 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6835 old_idx = 0;
6836
6837 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6838 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6839 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6840 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6841 (exp->action == ACT_ALLOW ||
6842 exp->action == ACT_DENY ||
6843 exp->action == ACT_TARPIT))
6844 return 0;
6845
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6846 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6847 if (!cur_idx)
6848 break;
6849
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6850 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6851 cur_ptr = cur_next;
6852 cur_end = cur_ptr + cur_hdr->len;
6853 cur_next = cur_end + cur_hdr->cr + 1;
6854
6855 /* Now we have one header between cur_ptr and cur_end,
6856 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6857 */
6858
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]6859 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]6860 switch (exp->action) {
6861 case ACT_SETBE:
6862 /* It is not possible to jump a second time.
6863 * FIXME: should we return an HTTP/500 here so that
6864 * the admin knows there's a problem ?
6865 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6866 if (s->be != s->fe)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6867 break;
6868
6869 /* Swithing Proxy */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6870 session_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6871 last_hdr = 1;
6872 break;
6873
6874 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6875 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6876 last_hdr = 1;
6877 break;
6878
6879 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6880 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6881 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6882 break;
6883
6884 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6885 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6886 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6887 break;
6888
6889 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]6890 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
6891 if (trash.len < 0)
6892 return -1;
6893
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6894 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6895 /* FIXME: if the user adds a newline in the replacement, the
6896 * index will not be recalculated for now, and the new line
6897 * will not be counted as a new header.
6898 */
6899
6900 cur_end += delta;
6901 cur_next += delta;
6902 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6903 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6904 break;
6905
6906 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6907 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6908 cur_next += delta;
6909
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6910 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6911 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6912 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6913 cur_hdr->len = 0;
6914 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6915 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6916 break;
6917
6918 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6919 }
6920
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6921 /* keep the link from this header to next one in case of later
6922 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6923 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6924 old_idx = cur_idx;
6925 }
6926 return 0;
6927}
6928
6929
6930/* Apply the filter to the request line.
6931 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6932 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6933 * Since it can manage the switch to another backend, it updates the per-proxy
6934 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6935 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6936int 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]6937{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6938 char *cur_ptr, *cur_end;
6939 int done;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6940 struct http_txn *txn = &s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6941 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6942
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6943 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6944 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6945 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6946 (exp->action == ACT_ALLOW ||
6947 exp->action == ACT_DENY ||
6948 exp->action == ACT_TARPIT))
6949 return 0;
6950 else if (exp->action == ACT_REMOVE)
6951 return 0;
6952
6953 done = 0;
6954
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6955 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6956 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6957
6958 /* Now we have the request line between cur_ptr and cur_end */
6959
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]6960 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]6961 switch (exp->action) {
6962 case ACT_SETBE:
6963 /* It is not possible to jump a second time.
6964 * FIXME: should we return an HTTP/500 here so that
6965 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6966 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6967 if (s->be != s->fe)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6968 break;
6969
6970 /* Swithing Proxy */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6971 session_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6972 done = 1;
6973 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6974
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6975 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6976 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6977 done = 1;
6978 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6979
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6980 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6981 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6982 done = 1;
6983 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6984
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6985 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6986 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6987 done = 1;
6988 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6989
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6990 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]6991 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
6992 if (trash.len < 0)
6993 return -1;
6994
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6995 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6996 /* FIXME: if the user adds a newline in the replacement, the
6997 * index will not be recalculated for now, and the new line
6998 * will not be counted as a new header.
6999 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7000
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7001 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7002 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7003 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7004 HTTP_MSG_RQMETH,
7005 cur_ptr, cur_end + 1,
7006 NULL, NULL);
7007 if (unlikely(!cur_end))
7008 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7009
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7010 /* we have a full request and we know that we have either a CR
7011 * or an LF at <ptr>.
7012 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7013 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7014 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]7015 /* there is no point trying this regex on headers */
7016 return 1;
7017 }
7018 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7019 return done;
7020}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7021
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7022
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7023
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7024/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7025 * 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]7026 * 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]7027 * unparsable request. Since it can manage the switch to another backend, it
7028 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7029 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7030int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7031{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7032 struct http_txn *txn = &s->txn;
7033 struct hdr_exp *exp;
7034
7035 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7036 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7037
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7038 /*
7039 * The interleaving of transformations and verdicts
7040 * makes it difficult to decide to continue or stop
7041 * the evaluation.
7042 */
7043
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7044 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7045 break;
7046
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7047 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7048 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7049 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7050 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7051
7052 /* if this filter had a condition, evaluate it now and skip to
7053 * next filter if the condition does not match.
7054 */
7055 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7056 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]7057 ret = acl_pass(ret);
7058 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7059 ret = !ret;
7060
7061 if (!ret)
7062 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7063 }
7064
7065 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7066 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7067 if (unlikely(ret < 0))
7068 return -1;
7069
7070 if (likely(ret == 0)) {
7071 /* The filter did not match the request, it can be
7072 * iterated through all headers.
7073 */
Willy Tarreaua256fae2015-01-30 20:58:58 +0100[diff] [blame]7074 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7075 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7076 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7077 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7078 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7079}
7080
7081
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7082
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7083/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7084 * Try to retrieve the server associated to the appsession.
7085 * If the server is found, it's assigned to the session.
7086 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7087void manage_client_side_appsession(struct session *s, const char *buf, int len) {
7088 struct http_txn *txn = &s->txn;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7089 appsess *asession = NULL;
7090 char *sessid_temp = NULL;
7091
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7092 if (len > s->be->appsession_len) {
7093 len = s->be->appsession_len;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7094 }
7095
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7096 if (s->be->options2 & PR_O2_AS_REQL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7097 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7098 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7099 /* 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]7100 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7101 }
7102
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7103 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7104 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7105 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]7106 return;
7107 }
7108
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7109 memcpy(txn->sessid, buf, len);
7110 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7111 }
7112
7113 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
7114 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7115 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]7116 return;
7117 }
7118
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7119 memcpy(sessid_temp, buf, len);
7120 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7121
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7122 asession = appsession_hash_lookup(&(s->be->htbl_proxy), sessid_temp);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7123 /* free previously allocated memory */
7124 pool_free2(apools.sessid, sessid_temp);
7125
7126 if (asession != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7127 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
7128 if (!(s->be->options2 & PR_O2_AS_REQL))
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7129 asession->request_count++;
7130
7131 if (asession->serverid != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7132 struct server *srv = s->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7133
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7134 while (srv) {
7135 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7136 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7137 (s->be->options & PR_O_PERSIST) ||
7138 (s->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7139 /* we found the server and it's usable */
7140 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7141 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7142 s->flags |= SN_DIRECT | SN_ASSIGNED;
7143 s->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]7144
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7145 break;
7146 } else {
7147 txn->flags &= ~TX_CK_MASK;
7148 txn->flags |= TX_CK_DOWN;
7149 }
7150 }
7151 srv = srv->next;
7152 }
7153 }
7154 }
7155}
7156
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7157/* Find the end of a cookie value contained between <s> and <e>. It works the
7158 * same way as with headers above except that the semi-colon also ends a token.
7159 * See RFC2965 for more information. Note that it requires a valid header to
7160 * return a valid result.
7161 */
7162char *find_cookie_value_end(char *s, const char *e)
7163{
7164 int quoted, qdpair;
7165
7166 quoted = qdpair = 0;
7167 for (; s < e; s++) {
7168 if (qdpair) qdpair = 0;
7169 else if (quoted) {
7170 if (*s == '\\') qdpair = 1;
7171 else if (*s == '"') quoted = 0;
7172 }
7173 else if (*s == '"') quoted = 1;
7174 else if (*s == ',' || *s == ';') return s;
7175 }
7176 return s;
7177}
7178
7179/* Delete a value in a header between delimiters <from> and <next> in buffer
7180 * <buf>. The number of characters displaced is returned, and the pointer to
7181 * the first delimiter is updated if required. The function tries as much as
7182 * possible to respect the following principles :
7183 * - replace <from> delimiter by the <next> one unless <from> points to a
7184 * colon, in which case <next> is simply removed
7185 * - set exactly one space character after the new first delimiter, unless
7186 * there are not enough characters in the block being moved to do so.
7187 * - remove unneeded spaces before the previous delimiter and after the new
7188 * one.
7189 *
7190 * It is the caller's responsibility to ensure that :
7191 * - <from> points to a valid delimiter or the colon ;
7192 * - <next> points to a valid delimiter or the final CR/LF ;
7193 * - there are non-space chars before <from> ;
7194 * - there is a CR/LF at or after <next>.
7195 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7196int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7197{
7198 char *prev = *from;
7199
7200 if (*prev == ':') {
7201 /* We're removing the first value, preserve the colon and add a
7202 * space if possible.
7203 */
7204 if (!http_is_crlf[(unsigned char)*next])
7205 next++;
7206 prev++;
7207 if (prev < next)
7208 *prev++ = ' ';
7209
7210 while (http_is_spht[(unsigned char)*next])
7211 next++;
7212 } else {
7213 /* Remove useless spaces before the old delimiter. */
7214 while (http_is_spht[(unsigned char)*(prev-1)])
7215 prev--;
7216 *from = prev;
7217
7218 /* copy the delimiter and if possible a space if we're
7219 * not at the end of the line.
7220 */
7221 if (!http_is_crlf[(unsigned char)*next]) {
7222 *prev++ = *next++;
7223 if (prev + 1 < next)
7224 *prev++ = ' ';
7225 while (http_is_spht[(unsigned char)*next])
7226 next++;
7227 }
7228 }
7229 return buffer_replace2(buf, prev, next, NULL, 0);
7230}
7231
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7232/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7233 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7234 * desirable to call it only when needed. This code is quite complex because
7235 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7236 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7237 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7238void manage_client_side_cookies(struct session *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7239{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7240 struct http_txn *txn = &s->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7241 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7242 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7243 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7244 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7245
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7246 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7247 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7248 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7249
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7250 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7251 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7252 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7253
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7254 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7255 hdr_beg = hdr_next;
7256 hdr_end = hdr_beg + cur_hdr->len;
7257 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7258
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7259 /* We have one full header between hdr_beg and hdr_end, and the
7260 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7261 * "Cookie:" headers.
7262 */
7263
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7264 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7265 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7266 old_idx = cur_idx;
7267 continue;
7268 }
7269
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7270 del_from = NULL; /* nothing to be deleted */
7271 preserve_hdr = 0; /* assume we may kill the whole header */
7272
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7273 /* Now look for cookies. Conforming to RFC2109, we have to support
7274 * attributes whose name begin with a '$', and associate them with
7275 * the right cookie, if we want to delete this cookie.
7276 * So there are 3 cases for each cookie read :
7277 * 1) it's a special attribute, beginning with a '$' : ignore it.
7278 * 2) it's a server id cookie that we *MAY* want to delete : save
7279 * some pointers on it (last semi-colon, beginning of cookie...)
7280 * 3) it's an application cookie : we *MAY* have to delete a previous
7281 * "special" cookie.
7282 * At the end of loop, if a "special" cookie remains, we may have to
7283 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7284 * *MUST* delete it.
7285 *
7286 * Note: RFC2965 is unclear about the processing of spaces around
7287 * the equal sign in the ATTR=VALUE form. A careful inspection of
7288 * the RFC explicitly allows spaces before it, and not within the
7289 * tokens (attrs or values). An inspection of RFC2109 allows that
7290 * too but section 10.1.3 lets one think that spaces may be allowed
7291 * after the equal sign too, resulting in some (rare) buggy
7292 * implementations trying to do that. So let's do what servers do.
7293 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7294 * allowed quoted strings in values, with any possible character
7295 * after a backslash, including control chars and delimitors, which
7296 * causes parsing to become ambiguous. Browsers also allow spaces
7297 * within values even without quotes.
7298 *
7299 * We have to keep multiple pointers in order to support cookie
7300 * removal at the beginning, middle or end of header without
7301 * corrupting the header. All of these headers are valid :
7302 *
7303 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7304 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7305 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7306 * | | | | | | | | |
7307 * | | | | | | | | hdr_end <--+
7308 * | | | | | | | +--> next
7309 * | | | | | | +----> val_end
7310 * | | | | | +-----------> val_beg
7311 * | | | | +--------------> equal
7312 * | | | +----------------> att_end
7313 * | | +---------------------> att_beg
7314 * | +--------------------------> prev
7315 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7316 */
7317
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7318 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7319 /* Iterate through all cookies on this line */
7320
7321 /* find att_beg */
7322 att_beg = prev + 1;
7323 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7324 att_beg++;
7325
7326 /* find att_end : this is the first character after the last non
7327 * space before the equal. It may be equal to hdr_end.
7328 */
7329 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7330
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7331 while (equal < hdr_end) {
7332 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7333 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7334 if (http_is_spht[(unsigned char)*equal++])
7335 continue;
7336 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7337 }
7338
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7339 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7340 * is between <att_beg> and <equal>, both may be identical.
7341 */
7342
7343 /* look for end of cookie if there is an equal sign */
7344 if (equal < hdr_end && *equal == '=') {
7345 /* look for the beginning of the value */
7346 val_beg = equal + 1;
7347 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7348 val_beg++;
7349
7350 /* find the end of the value, respecting quotes */
7351 next = find_cookie_value_end(val_beg, hdr_end);
7352
7353 /* make val_end point to the first white space or delimitor after the value */
7354 val_end = next;
7355 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7356 val_end--;
7357 } else {
7358 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7359 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7360
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7361 /* We have nothing to do with attributes beginning with '$'. However,
7362 * they will automatically be removed if a header before them is removed,
7363 * since they're supposed to be linked together.
7364 */
7365 if (*att_beg == '$')
7366 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7367
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7368 /* Ignore cookies with no equal sign */
7369 if (equal == next) {
7370 /* This is not our cookie, so we must preserve it. But if we already
7371 * scheduled another cookie for removal, we cannot remove the
7372 * complete header, but we can remove the previous block itself.
7373 */
7374 preserve_hdr = 1;
7375 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7376 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7377 val_end += delta;
7378 next += delta;
7379 hdr_end += delta;
7380 hdr_next += delta;
7381 cur_hdr->len += delta;
7382 http_msg_move_end(&txn->req, delta);
7383 prev = del_from;
7384 del_from = NULL;
7385 }
7386 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7387 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7388
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7389 /* if there are spaces around the equal sign, we need to
7390 * strip them otherwise we'll get trouble for cookie captures,
7391 * or even for rewrites. Since this happens extremely rarely,
7392 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7393 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7394 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7395 int stripped_before = 0;
7396 int stripped_after = 0;
7397
7398 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7399 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7400 equal += stripped_before;
7401 val_beg += stripped_before;
7402 }
7403
7404 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7405 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7406 val_beg += stripped_after;
7407 stripped_before += stripped_after;
7408 }
7409
7410 val_end += stripped_before;
7411 next += stripped_before;
7412 hdr_end += stripped_before;
7413 hdr_next += stripped_before;
7414 cur_hdr->len += stripped_before;
7415 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7416 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7417 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7418
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7419 /* First, let's see if we want to capture this cookie. We check
7420 * that we don't already have a client side cookie, because we
7421 * can only capture one. Also as an optimisation, we ignore
7422 * cookies shorter than the declared name.
7423 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7424 if (s->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7425 (val_end - att_beg >= s->fe->capture_namelen) &&
7426 memcmp(att_beg, s->fe->capture_name, s->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7427 int log_len = val_end - att_beg;
7428
7429 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7430 Alert("HTTP logging : out of memory.\n");
7431 } else {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7432 if (log_len > s->fe->capture_len)
7433 log_len = s->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7434 memcpy(txn->cli_cookie, att_beg, log_len);
7435 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7436 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7437 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7438
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7439 /* Persistence cookies in passive, rewrite or insert mode have the
7440 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7441 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7442 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7443 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7444 * For cookies in prefix mode, the form is :
7445 *
7446 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7447 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7448 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7449 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7450 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7451 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7452
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7453 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7454 * have the server ID between val_beg and delim, and the original cookie between
7455 * delim+1 and val_end. Otherwise, delim==val_end :
7456 *
7457 * Cookie: NAME=SRV; # in all but prefix modes
7458 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7459 * | || || | |+-> next
7460 * | || || | +--> val_end
7461 * | || || +---------> delim
7462 * | || |+------------> val_beg
7463 * | || +-------------> att_end = equal
7464 * | |+-----------------> att_beg
7465 * | +------------------> prev
7466 * +-------------------------> hdr_beg
7467 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7468
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7469 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7470 for (delim = val_beg; delim < val_end; delim++)
7471 if (*delim == COOKIE_DELIM)
7472 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7473 } else {
7474 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7475 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7476 /* Now check if the cookie contains a date field, which would
7477 * appear after a vertical bar ('|') just after the server name
7478 * and before the delimiter.
7479 */
7480 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7481 if (vbar1) {
7482 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7483 * right is the last seen date. It is a base64 encoded
7484 * 30-bit value representing the UNIX date since the
7485 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7486 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7487 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7488 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7489 if (val_end - vbar1 >= 5) {
7490 val = b64tos30(vbar1);
7491 if (val > 0)
7492 txn->cookie_last_date = val << 2;
7493 }
7494 /* look for a second vertical bar */
7495 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7496 if (vbar1 && (val_end - vbar1 > 5)) {
7497 val = b64tos30(vbar1 + 1);
7498 if (val > 0)
7499 txn->cookie_first_date = val << 2;
7500 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7501 }
7502 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7503
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7504 /* if the cookie has an expiration date and the proxy wants to check
7505 * it, then we do that now. We first check if the cookie is too old,
7506 * then only if it has expired. We detect strict overflow because the
7507 * time resolution here is not great (4 seconds). Cookies with dates
7508 * in the future are ignored if their offset is beyond one day. This
7509 * allows an admin to fix timezone issues without expiring everyone
7510 * and at the same time avoids keeping unwanted side effects for too
7511 * long.
7512 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7513 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7514 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7515 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7516 txn->flags &= ~TX_CK_MASK;
7517 txn->flags |= TX_CK_OLD;
7518 delim = val_beg; // let's pretend we have not found the cookie
7519 txn->cookie_first_date = 0;
7520 txn->cookie_last_date = 0;
7521 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7522 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7523 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7524 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7525 txn->flags &= ~TX_CK_MASK;
7526 txn->flags |= TX_CK_EXPIRED;
7527 delim = val_beg; // let's pretend we have not found the cookie
7528 txn->cookie_first_date = 0;
7529 txn->cookie_last_date = 0;
7530 }
7531
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7532 /* Here, we'll look for the first running server which supports the cookie.
7533 * This allows to share a same cookie between several servers, for example
7534 * to dedicate backup servers to specific servers only.
7535 * However, to prevent clients from sticking to cookie-less backup server
7536 * when they have incidentely learned an empty cookie, we simply ignore
7537 * empty cookies and mark them as invalid.
7538 * The same behaviour is applied when persistence must be ignored.
7539 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7540 if ((delim == val_beg) || (s->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7541 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7542
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7543 while (srv) {
7544 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7545 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7546 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7547 (s->be->options & PR_O_PERSIST) ||
7548 (s->flags & SN_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7549 /* we found the server and we can use it */
7550 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7551 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7552 s->flags |= SN_DIRECT | SN_ASSIGNED;
7553 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7554 break;
7555 } else {
7556 /* we found a server, but it's down,
7557 * mark it as such and go on in case
7558 * another one is available.
7559 */
7560 txn->flags &= ~TX_CK_MASK;
7561 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7562 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7563 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7564 srv = srv->next;
7565 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7566
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7567 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7568 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7569 txn->flags &= ~TX_CK_MASK;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7570 if ((s->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7571 txn->flags |= TX_CK_UNUSED;
7572 else
7573 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7574 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7575
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7576 /* depending on the cookie mode, we may have to either :
7577 * - delete the complete cookie if we're in insert+indirect mode, so that
7578 * the server never sees it ;
7579 * - remove the server id from the cookie value, and tag the cookie as an
7580 * application cookie so that it does not get accidentely removed later,
7581 * if we're in cookie prefix mode
7582 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7583 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7584 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7585
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7586 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7587 val_end += delta;
7588 next += delta;
7589 hdr_end += delta;
7590 hdr_next += delta;
7591 cur_hdr->len += delta;
7592 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7593
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7594 del_from = NULL;
7595 preserve_hdr = 1; /* we want to keep this cookie */
7596 }
7597 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7598 (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]7599 del_from = prev;
7600 }
7601 } else {
7602 /* This is not our cookie, so we must preserve it. But if we already
7603 * scheduled another cookie for removal, we cannot remove the
7604 * complete header, but we can remove the previous block itself.
7605 */
7606 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7607
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7608 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7609 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7610 if (att_beg >= del_from)
7611 att_beg += delta;
7612 if (att_end >= del_from)
7613 att_end += delta;
7614 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7615 val_end += delta;
7616 next += delta;
7617 hdr_end += delta;
7618 hdr_next += delta;
7619 cur_hdr->len += delta;
7620 http_msg_move_end(&txn->req, delta);
7621 prev = del_from;
7622 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7623 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7624 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7625
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7626 /* Look for the appsession cookie unless persistence must be ignored */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7627 if (!(s->flags & SN_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7628 int cmp_len, value_len;
7629 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7630
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7631 if (s->be->options2 & PR_O2_AS_PFX) {
7632 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
7633 value_begin = att_beg + s->be->appsession_name_len;
7634 value_len = val_end - att_beg - s->be->appsession_name_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7635 } else {
7636 cmp_len = att_end - att_beg;
7637 value_begin = val_beg;
7638 value_len = val_end - val_beg;
7639 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7640
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7641 /* let's see if the cookie is our appcookie */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7642 if (cmp_len == s->be->appsession_name_len &&
7643 memcmp(att_beg, s->be->appsession_name, cmp_len) == 0) {
7644 manage_client_side_appsession(s, value_begin, value_len);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7645 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7646 }
7647
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7648 /* continue with next cookie on this header line */
7649 att_beg = next;
7650 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7651
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7652 /* There are no more cookies on this line.
7653 * We may still have one (or several) marked for deletion at the
7654 * end of the line. We must do this now in two ways :
7655 * - if some cookies must be preserved, we only delete from the
7656 * mark to the end of line ;
7657 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7658 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7659 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7660 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7661 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7662 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7663 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7664 cur_hdr->len += delta;
7665 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7666 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7667
7668 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7669 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7670 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7671 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7672 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7673 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7674 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7675 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7676 }
7677
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7678 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7679 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7680 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7681}
7682
7683
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7684/* Iterate the same filter through all response headers contained in <rtr>.
7685 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7686 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7687int 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]7688{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7689 char *cur_ptr, *cur_end, *cur_next;
7690 int cur_idx, old_idx, last_hdr;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7691 struct http_txn *txn = &s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7692 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7693 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7694
7695 last_hdr = 0;
7696
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7697 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7698 old_idx = 0;
7699
7700 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7701 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7702 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7703 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7704 (exp->action == ACT_ALLOW ||
7705 exp->action == ACT_DENY))
7706 return 0;
7707
7708 cur_idx = txn->hdr_idx.v[old_idx].next;
7709 if (!cur_idx)
7710 break;
7711
7712 cur_hdr = &txn->hdr_idx.v[cur_idx];
7713 cur_ptr = cur_next;
7714 cur_end = cur_ptr + cur_hdr->len;
7715 cur_next = cur_end + cur_hdr->cr + 1;
7716
7717 /* Now we have one header between cur_ptr and cur_end,
7718 * and the next header starts at cur_next.
7719 */
7720
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]7721 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]7722 switch (exp->action) {
7723 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7724 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7725 last_hdr = 1;
7726 break;
7727
7728 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7729 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7730 last_hdr = 1;
7731 break;
7732
7733 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7734 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7735 if (trash.len < 0)
7736 return -1;
7737
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7738 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7739 /* FIXME: if the user adds a newline in the replacement, the
7740 * index will not be recalculated for now, and the new line
7741 * will not be counted as a new header.
7742 */
7743
7744 cur_end += delta;
7745 cur_next += delta;
7746 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7747 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7748 break;
7749
7750 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7751 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7752 cur_next += delta;
7753
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7754 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7755 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7756 txn->hdr_idx.used--;
7757 cur_hdr->len = 0;
7758 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7759 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7760 break;
7761
7762 }
7763 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7764
7765 /* keep the link from this header to next one in case of later
7766 * removal of next header.
7767 */
7768 old_idx = cur_idx;
7769 }
7770 return 0;
7771}
7772
7773
7774/* Apply the filter to the status line in the response buffer <rtr>.
7775 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7776 * or -1 if a replacement resulted in an invalid status line.
7777 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7778int 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]7779{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7780 char *cur_ptr, *cur_end;
7781 int done;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7782 struct http_txn *txn = &s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7783 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7784
7785
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7786 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7787 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7788 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7789 (exp->action == ACT_ALLOW ||
7790 exp->action == ACT_DENY))
7791 return 0;
7792 else if (exp->action == ACT_REMOVE)
7793 return 0;
7794
7795 done = 0;
7796
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7797 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7798 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7799
7800 /* Now we have the status line between cur_ptr and cur_end */
7801
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]7802 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]7803 switch (exp->action) {
7804 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7805 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7806 done = 1;
7807 break;
7808
7809 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7810 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7811 done = 1;
7812 break;
7813
7814 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7815 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7816 if (trash.len < 0)
7817 return -1;
7818
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7819 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7820 /* FIXME: if the user adds a newline in the replacement, the
7821 * index will not be recalculated for now, and the new line
7822 * will not be counted as a new header.
7823 */
7824
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7825 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7826 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7827 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7828 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7829 cur_ptr, cur_end + 1,
7830 NULL, NULL);
7831 if (unlikely(!cur_end))
7832 return -1;
7833
7834 /* we have a full respnse and we know that we have either a CR
7835 * or an LF at <ptr>.
7836 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7837 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]7838 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]7839 /* there is no point trying this regex on headers */
7840 return 1;
7841 }
7842 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7843 return done;
7844}
7845
7846
7847
7848/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7849 * 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]7850 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7851 * unparsable response.
7852 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7853int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7854{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7855 struct http_txn *txn = &s->txn;
7856 struct hdr_exp *exp;
7857
7858 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7859 int ret;
7860
7861 /*
7862 * The interleaving of transformations and verdicts
7863 * makes it difficult to decide to continue or stop
7864 * the evaluation.
7865 */
7866
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7867 if (txn->flags & TX_SVDENY)
7868 break;
7869
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7870 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7871 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7872 exp->action == ACT_PASS)) {
7873 exp = exp->next;
7874 continue;
7875 }
7876
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7877 /* if this filter had a condition, evaluate it now and skip to
7878 * next filter if the condition does not match.
7879 */
7880 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7881 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]7882 ret = acl_pass(ret);
7883 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7884 ret = !ret;
7885 if (!ret)
7886 continue;
7887 }
7888
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7889 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7890 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7891 if (unlikely(ret < 0))
7892 return -1;
7893
7894 if (likely(ret == 0)) {
7895 /* The filter did not match the response, it can be
7896 * iterated through all headers.
7897 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7898 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
7899 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7900 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7901 }
7902 return 0;
7903}
7904
7905
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7906/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7907 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7908 * desirable to call it only when needed. This function is also used when we
7909 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7910 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7911void manage_server_side_cookies(struct session *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7912{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7913 struct http_txn *txn = &s->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7914 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7915 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7916 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7917 char *hdr_beg, *hdr_end, *hdr_next;
7918 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7919
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7920 /* Iterate through the headers.
7921 * we start with the start line.
7922 */
7923 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7924 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7925
7926 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7927 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7928 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7929
7930 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7931 hdr_beg = hdr_next;
7932 hdr_end = hdr_beg + cur_hdr->len;
7933 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7934
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7935 /* We have one full header between hdr_beg and hdr_end, and the
7936 * next header starts at hdr_next. We're only interested in
7937 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7938 */
7939
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7940 is_cookie2 = 0;
7941 prev = hdr_beg + 10;
7942 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7943 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7944 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7945 if (!val) {
7946 old_idx = cur_idx;
7947 continue;
7948 }
7949 is_cookie2 = 1;
7950 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7951 }
7952
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7953 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7954 * <prev> points to the colon.
7955 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7956 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7957
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7958 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7959 * check-cache is enabled) and we are not interested in checking
7960 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7961 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7962 if (s->be->cookie_name == NULL &&
7963 s->be->appsession_name == NULL &&
7964 s->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7965 return;
7966
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7967 /* OK so now we know we have to process this response cookie.
7968 * The format of the Set-Cookie header is slightly different
7969 * from the format of the Cookie header in that it does not
7970 * support the comma as a cookie delimiter (thus the header
7971 * cannot be folded) because the Expires attribute described in
7972 * the original Netscape's spec may contain an unquoted date
7973 * with a comma inside. We have to live with this because
7974 * many browsers don't support Max-Age and some browsers don't
7975 * support quoted strings. However the Set-Cookie2 header is
7976 * clean.
7977 *
7978 * We have to keep multiple pointers in order to support cookie
7979 * removal at the beginning, middle or end of header without
7980 * corrupting the header (in case of set-cookie2). A special
7981 * pointer, <scav> points to the beginning of the set-cookie-av
7982 * fields after the first semi-colon. The <next> pointer points
7983 * either to the end of line (set-cookie) or next unquoted comma
7984 * (set-cookie2). All of these headers are valid :
7985 *
7986 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7987 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7988 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7989 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7990 * | | | | | | | | | |
7991 * | | | | | | | | +-> next hdr_end <--+
7992 * | | | | | | | +------------> scav
7993 * | | | | | | +--------------> val_end
7994 * | | | | | +--------------------> val_beg
7995 * | | | | +----------------------> equal
7996 * | | | +------------------------> att_end
7997 * | | +----------------------------> att_beg
7998 * | +------------------------------> prev
7999 * +-----------------------------------------> hdr_beg
8000 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8001
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8002 for (; prev < hdr_end; prev = next) {
8003 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8004
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8005 /* find att_beg */
8006 att_beg = prev + 1;
8007 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8008 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8009
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8010 /* find att_end : this is the first character after the last non
8011 * space before the equal. It may be equal to hdr_end.
8012 */
8013 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8014
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8015 while (equal < hdr_end) {
8016 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8017 break;
8018 if (http_is_spht[(unsigned char)*equal++])
8019 continue;
8020 att_end = equal;
8021 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8022
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8023 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8024 * is between <att_beg> and <equal>, both may be identical.
8025 */
8026
8027 /* look for end of cookie if there is an equal sign */
8028 if (equal < hdr_end && *equal == '=') {
8029 /* look for the beginning of the value */
8030 val_beg = equal + 1;
8031 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8032 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8033
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8034 /* find the end of the value, respecting quotes */
8035 next = find_cookie_value_end(val_beg, hdr_end);
8036
8037 /* make val_end point to the first white space or delimitor after the value */
8038 val_end = next;
8039 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8040 val_end--;
8041 } else {
8042 /* <equal> points to next comma, semi-colon or EOL */
8043 val_beg = val_end = next = equal;
8044 }
8045
8046 if (next < hdr_end) {
8047 /* Set-Cookie2 supports multiple cookies, and <next> points to
8048 * a colon or semi-colon before the end. So skip all attr-value
8049 * pairs and look for the next comma. For Set-Cookie, since
8050 * commas are permitted in values, skip to the end.
8051 */
8052 if (is_cookie2)
8053 next = find_hdr_value_end(next, hdr_end);
8054 else
8055 next = hdr_end;
8056 }
8057
8058 /* Now everything is as on the diagram above */
8059
8060 /* Ignore cookies with no equal sign */
8061 if (equal == val_end)
8062 continue;
8063
8064 /* If there are spaces around the equal sign, we need to
8065 * strip them otherwise we'll get trouble for cookie captures,
8066 * or even for rewrites. Since this happens extremely rarely,
8067 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8068 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8069 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8070 int stripped_before = 0;
8071 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8072
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8073 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8074 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8075 equal += stripped_before;
8076 val_beg += stripped_before;
8077 }
8078
8079 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8080 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8081 val_beg += stripped_after;
8082 stripped_before += stripped_after;
8083 }
8084
8085 val_end += stripped_before;
8086 next += stripped_before;
8087 hdr_end += stripped_before;
8088 hdr_next += stripped_before;
8089 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8090 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8091 }
8092
8093 /* First, let's see if we want to capture this cookie. We check
8094 * that we don't already have a server side cookie, because we
8095 * can only capture one. Also as an optimisation, we ignore
8096 * cookies shorter than the declared name.
8097 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8098 if (s->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8099 txn->srv_cookie == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8100 (val_end - att_beg >= s->fe->capture_namelen) &&
8101 memcmp(att_beg, s->fe->capture_name, s->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8102 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8103 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8104 Alert("HTTP logging : out of memory.\n");
8105 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8106 else {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8107 if (log_len > s->fe->capture_len)
8108 log_len = s->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8109 memcpy(txn->srv_cookie, att_beg, log_len);
8110 txn->srv_cookie[log_len] = 0;
8111 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8112 }
8113
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8114 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8115 /* now check if we need to process it for persistence */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8116 if (!(s->flags & SN_IGNORE_PRST) &&
8117 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8118 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8119 /* assume passive cookie by default */
8120 txn->flags &= ~TX_SCK_MASK;
8121 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8122
8123 /* If the cookie is in insert mode on a known server, we'll delete
8124 * this occurrence because we'll insert another one later.
8125 * 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]8126 * a direct access.
8127 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8128 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8129 /* The "preserve" flag was set, we don't want to touch the
8130 * server's cookie.
8131 */
8132 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8133 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
8134 ((s->flags & SN_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8135 /* this cookie must be deleted */
8136 if (*prev == ':' && next == hdr_end) {
8137 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8138 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8139 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8140 txn->hdr_idx.used--;
8141 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8142 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8143 hdr_next += delta;
8144 http_msg_move_end(&txn->rsp, delta);
8145 /* note: while both invalid now, <next> and <hdr_end>
8146 * are still equal, so the for() will stop as expected.
8147 */
8148 } else {
8149 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8150 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8151 next = prev;
8152 hdr_end += delta;
8153 hdr_next += delta;
8154 cur_hdr->len += delta;
8155 http_msg_move_end(&txn->rsp, delta);
8156 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8157 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8158 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8159 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8160 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8161 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8162 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8163 * with this server since we know it.
8164 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8165 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8166 next += delta;
8167 hdr_end += delta;
8168 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8169 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8170 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8171
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8172 txn->flags &= ~TX_SCK_MASK;
8173 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8174 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8175 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8176 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8177 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8178 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8179 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8180 next += delta;
8181 hdr_end += delta;
8182 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8183 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8184 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8185
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8186 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8187 txn->flags &= ~TX_SCK_MASK;
8188 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8189 }
8190 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]8191 /* 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]8192 else if (!(s->flags & SN_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8193 int cmp_len, value_len;
8194 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8195
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8196 if (s->be->options2 & PR_O2_AS_PFX) {
8197 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
8198 value_begin = att_beg + s->be->appsession_name_len;
8199 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]8200 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8201 cmp_len = att_end - att_beg;
8202 value_begin = val_beg;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8203 value_len = MIN(s->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8204 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8205
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8206 if ((cmp_len == s->be->appsession_name_len) &&
8207 (memcmp(att_beg, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8208 /* free a possibly previously allocated memory */
8209 pool_free2(apools.sessid, txn->sessid);
8210
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8211 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8212 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8213 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8214 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]8215 return;
8216 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8217 memcpy(txn->sessid, value_begin, value_len);
8218 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8219 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8220 }
8221 /* that's done for this cookie, check the next one on the same
8222 * line when next != hdr_end (only if is_cookie2).
8223 */
8224 }
8225 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8226 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8227 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8228
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8229 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8230 appsess *asession = NULL;
8231 /* only do insert, if lookup fails */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8232 asession = appsession_hash_lookup(&(s->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8233 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]8234 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8235 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
8236 Alert("Not enough Memory process_srv():asession:calloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8237 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8238 return;
8239 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8240 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
8241
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8242 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
8243 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8244 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8245 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8246 return;
8247 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8248 memcpy(asession->sessid, txn->sessid, s->be->appsession_len);
8249 asession->sessid[s->be->appsession_len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8250
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8251 server_id_len = strlen(objt_server(s->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8252 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8253 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8254 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8255 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8256 return;
8257 }
8258 asession->serverid[0] = '\0';
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8259 memcpy(asession->serverid, objt_server(s->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8260
8261 asession->request_count = 0;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8262 appsession_hash_insert(&(s->be->htbl_proxy), asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8263 }
8264
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8265 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8266 asession->request_count++;
8267 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8268}
8269
8270
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8271/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8272 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8273 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8274void check_response_for_cacheability(struct session *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8275{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8276 struct http_txn *txn = &s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8277 char *p1, *p2;
8278
8279 char *cur_ptr, *cur_end, *cur_next;
8280 int cur_idx;
8281
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8282 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8283 return;
8284
8285 /* Iterate through the headers.
8286 * we start with the start line.
8287 */
8288 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8289 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8290
8291 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8292 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8293 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8294
8295 cur_hdr = &txn->hdr_idx.v[cur_idx];
8296 cur_ptr = cur_next;
8297 cur_end = cur_ptr + cur_hdr->len;
8298 cur_next = cur_end + cur_hdr->cr + 1;
8299
8300 /* We have one full header between cur_ptr and cur_end, and the
8301 * next header starts at cur_next. We're only interested in
8302 * "Cookie:" headers.
8303 */
8304
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8305 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8306 if (val) {
8307 if ((cur_end - (cur_ptr + val) >= 8) &&
8308 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8309 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8310 return;
8311 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8312 }
8313
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8314 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8315 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8316 continue;
8317
8318 /* OK, right now we know we have a cache-control header at cur_ptr */
8319
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8320 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8321
8322 if (p1 >= cur_end) /* no more info */
8323 continue;
8324
8325 /* p1 is at the beginning of the value */
8326 p2 = p1;
8327
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8328 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8329 p2++;
8330
8331 /* we have a complete value between p1 and p2 */
8332 if (p2 < cur_end && *p2 == '=') {
8333 /* we have something of the form no-cache="set-cookie" */
8334 if ((cur_end - p1 >= 21) &&
8335 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8336 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8337 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8338 continue;
8339 }
8340
8341 /* OK, so we know that either p2 points to the end of string or to a comma */
8342 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8343 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8344 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8345 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8346 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8347 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8348 return;
8349 }
8350
8351 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8352 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8353 continue;
8354 }
8355 }
8356}
8357
8358
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8359/*
8360 * Try to retrieve a known appsession in the URI, then the associated server.
8361 * If the server is found, it's assigned to the session.
8362 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8363void get_srv_from_appsession(struct session *s, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8364{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8365 char *end_params, *first_param, *cur_param, *next_param;
8366 char separator;
8367 int value_len;
8368
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8369 int mode = s->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8370
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8371 if (s->be->appsession_name == NULL ||
8372 (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]8373 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8374 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8375
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8376 first_param = NULL;
8377 switch (mode) {
8378 case PR_O2_AS_M_PP:
8379 first_param = memchr(begin, ';', len);
8380 break;
8381 case PR_O2_AS_M_QS:
8382 first_param = memchr(begin, '?', len);
8383 break;
8384 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8385
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8386 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8387 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8388 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8389
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8390 switch (mode) {
8391 case PR_O2_AS_M_PP:
8392 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
8393 end_params = (char *) begin + len;
8394 }
8395 separator = ';';
8396 break;
8397 case PR_O2_AS_M_QS:
8398 end_params = (char *) begin + len;
8399 separator = '&';
8400 break;
8401 default:
8402 /* unknown mode, shouldn't happen */
8403 return;
8404 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8405
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8406 cur_param = next_param = end_params;
8407 while (cur_param > first_param) {
8408 cur_param--;
8409 if ((cur_param[0] == separator) || (cur_param == first_param)) {
8410 /* let's see if this is the appsession parameter */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8411 if ((cur_param + s->be->appsession_name_len + 1 < next_param) &&
8412 ((s->be->options2 & PR_O2_AS_PFX) || cur_param[s->be->appsession_name_len + 1] == '=') &&
8413 (strncasecmp(cur_param + 1, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8414 /* Cool... it's the right one */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8415 cur_param += s->be->appsession_name_len + (s->be->options2 & PR_O2_AS_PFX ? 1 : 2);
8416 value_len = MIN(s->be->appsession_len, next_param - cur_param);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8417 if (value_len > 0) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8418 manage_client_side_appsession(s, cur_param, value_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8419 }
8420 break;
8421 }
8422 next_param = cur_param;
8423 }
8424 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8425#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]8426 Alert("get_srv_from_appsession\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8427 appsession_hash_dump(&(s->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8428#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8429}
8430
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8431/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8432 * 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]8433 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8434 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8435 * 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]8436 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8437 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8438 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8439 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8440int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8441{
8442 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8443 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8444 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8445
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8446 if (!uri_auth)
8447 return 0;
8448
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8449 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]8450 return 0;
8451
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8452 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8453 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8454 return 0;
8455
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8456 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8457 return 0;
8458
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8459 return 1;
8460}
8461
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8462/*
8463 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8464 * By default it tries to report the error position as msg->err_pos. However if
8465 * this one is not set, it will then report msg->next, which is the last known
8466 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8467 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8468 */
8469void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8470 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8471 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8472{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8473 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8474 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8475
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8476 es->len = MIN(chn->buf->i, sizeof(es->buf));
8477 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8478 len1 = MIN(len1, es->len);
8479 len2 = es->len - len1; /* remaining data if buffer wraps */
8480
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8481 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8482 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8483 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8484
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8485 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8486 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8487 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8488 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8489
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8490 es->when = date; // user-visible date
8491 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8492 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8493 es->oe = other_end;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8494 if (objt_conn(s->req->prod->end))
8495 es->src = __objt_conn(s->req->prod->end)->addr.from;
8496 else
8497 memset(&es->src, 0, sizeof(es->src));
8498
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8499 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8500 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8501 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8502 es->s_flags = s->flags;
8503 es->t_flags = s->txn.flags;
8504 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8505 es->b_out = chn->buf->o;
8506 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8507 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8508 es->m_clen = msg->chunk_len;
8509 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8510}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8511
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8512/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8513 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8514 * performed over the whole headers. Otherwise it must contain a valid header
8515 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8516 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8517 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8518 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8519 * -1. The value fetch stops at commas, so this function is suited for use with
8520 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8521 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8522 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8523unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8524 struct hdr_idx *idx, int occ,
8525 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8526{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8527 struct hdr_ctx local_ctx;
8528 char *ptr_hist[MAX_HDR_HISTORY];
8529 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8530 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8531 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8532
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8533 if (!ctx) {
8534 local_ctx.idx = 0;
8535 ctx = &local_ctx;
8536 }
8537
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8538 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8539 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8540 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8541 occ--;
8542 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8543 *vptr = ctx->line + ctx->val;
8544 *vlen = ctx->vlen;
8545 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8546 }
8547 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8548 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8549 }
8550
8551 /* negative occurrence, we scan all the list then walk back */
8552 if (-occ > MAX_HDR_HISTORY)
8553 return 0;
8554
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8555 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8556 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8557 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8558 len_hist[hist_ptr] = ctx->vlen;
8559 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8560 hist_ptr = 0;
8561 found++;
8562 }
8563 if (-occ > found)
8564 return 0;
8565 /* 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]8566 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8567 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8568 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8569 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8570 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8571 if (hist_ptr >= MAX_HDR_HISTORY)
8572 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8573 *vptr = ptr_hist[hist_ptr];
8574 *vlen = len_hist[hist_ptr];
8575 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8576}
8577
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8578/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8579 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8580 * performed over the whole headers. Otherwise it must contain a valid header
8581 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8582 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8583 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8584 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8585 * -1. This function differs from http_get_hdr() in that it only returns full
8586 * line header values and does not stop at commas.
8587 * The return value is 0 if nothing was found, or non-zero otherwise.
8588 */
8589unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8590 struct hdr_idx *idx, int occ,
8591 struct hdr_ctx *ctx, char **vptr, int *vlen)
8592{
8593 struct hdr_ctx local_ctx;
8594 char *ptr_hist[MAX_HDR_HISTORY];
8595 int len_hist[MAX_HDR_HISTORY];
8596 unsigned int hist_ptr;
8597 int found;
8598
8599 if (!ctx) {
8600 local_ctx.idx = 0;
8601 ctx = &local_ctx;
8602 }
8603
8604 if (occ >= 0) {
8605 /* search from the beginning */
8606 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8607 occ--;
8608 if (occ <= 0) {
8609 *vptr = ctx->line + ctx->val;
8610 *vlen = ctx->vlen;
8611 return 1;
8612 }
8613 }
8614 return 0;
8615 }
8616
8617 /* negative occurrence, we scan all the list then walk back */
8618 if (-occ > MAX_HDR_HISTORY)
8619 return 0;
8620
8621 found = hist_ptr = 0;
8622 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8623 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8624 len_hist[hist_ptr] = ctx->vlen;
8625 if (++hist_ptr >= MAX_HDR_HISTORY)
8626 hist_ptr = 0;
8627 found++;
8628 }
8629 if (-occ > found)
8630 return 0;
8631 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8632 * find occurrence -occ, so we have to check [hist_ptr+occ].
8633 */
8634 hist_ptr += occ;
8635 if (hist_ptr >= MAX_HDR_HISTORY)
8636 hist_ptr -= MAX_HDR_HISTORY;
8637 *vptr = ptr_hist[hist_ptr];
8638 *vlen = len_hist[hist_ptr];
8639 return 1;
8640}
8641
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8642/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8643 * Print a debug line with a header. Always stop at the first CR or LF char,
8644 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8645 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8646 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8647void debug_hdr(const char *dir, struct session *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8648{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8649 int max;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8650 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8651 dir,
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8652 objt_conn(s->req->prod->end) ? (unsigned short)objt_conn(s->req->prod->end)->t.sock.fd : -1,
8653 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]8654
8655 for (max = 0; start + max < end; max++)
8656 if (start[max] == '\r' || start[max] == '\n')
8657 break;
8658
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8659 UBOUND(max, trash.size - trash.len - 3);
8660 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8661 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8662 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8663}
8664
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8665/*
8666 * Initialize a new HTTP transaction for session <s>. It is assumed that all
8667 * the required fields are properly allocated and that we only need to (re)init
8668 * them. This should be used before processing any new request.
8669 */
8670void http_init_txn(struct session *s)
8671{
8672 struct http_txn *txn = &s->txn;
8673 struct proxy *fe = s->fe;
8674
8675 txn->flags = 0;
8676 txn->status = -1;
8677
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8678 txn->cookie_first_date = 0;
8679 txn->cookie_last_date = 0;
8680
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8681 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8682 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8683 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8684 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8685 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8686 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8687 txn->req.chunk_len = 0LL;
8688 txn->req.body_len = 0LL;
8689 txn->rsp.chunk_len = 0LL;
8690 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8691 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8692 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8693 txn->req.chn = s->req;
8694 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8695
8696 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8697
8698 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8699 if (fe->options2 & PR_O2_REQBUG_OK)
8700 txn->req.err_pos = -1; /* let buggy requests pass */
8701
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8702 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8703 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8704
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8705 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8706 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8707
8708 if (txn->hdr_idx.v)
8709 hdr_idx_init(&txn->hdr_idx);
8710}
8711
8712/* to be used at the end of a transaction */
8713void http_end_txn(struct session *s)
8714{
8715 struct http_txn *txn = &s->txn;
8716
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]8717 /* release any possible compression context */
8718 if (s->flags & SN_COMP_READY)
8719 s->comp_algo->end(&s->comp_ctx);
8720 s->comp_algo = NULL;
8721 s->flags &= ~SN_COMP_READY;
8722
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8723 /* these ones will have been dynamically allocated */
8724 pool_free2(pool2_requri, txn->uri);
8725 pool_free2(pool2_capture, txn->cli_cookie);
8726 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8727 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8728 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8729
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8730 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8731 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8732 txn->uri = NULL;
8733 txn->srv_cookie = NULL;
8734 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8735
8736 if (txn->req.cap) {
8737 struct cap_hdr *h;
8738 for (h = s->fe->req_cap; h; h = h->next)
8739 pool_free2(h->pool, txn->req.cap[h->index]);
8740 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8741 }
8742
8743 if (txn->rsp.cap) {
8744 struct cap_hdr *h;
8745 for (h = s->fe->rsp_cap; h; h = h->next)
8746 pool_free2(h->pool, txn->rsp.cap[h->index]);
8747 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8748 }
8749
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8750}
8751
8752/* to be used at the end of a transaction to prepare a new one */
8753void http_reset_txn(struct session *s)
8754{
8755 http_end_txn(s);
8756 http_init_txn(s);
8757
8758 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8759 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8760 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8761 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8762 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8763 /* re-init store persistence */
8764 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8765 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8766
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8767 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8768
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8769 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8770
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8771 /* We must trim any excess data from the response buffer, because we
8772 * may have blocked an invalid response from a server that we don't
8773 * want to accidentely forward once we disable the analysers, nor do
8774 * we want those data to come along with next response. A typical
8775 * example of such data would be from a buggy server responding to
8776 * a HEAD with some data, or sending more than the advertised
8777 * content-length.
8778 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8779 if (unlikely(s->rep->buf->i))
8780 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8781
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8782 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8783 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8784
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8785 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8786 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8787
8788 s->req->rex = TICK_ETERNITY;
8789 s->req->wex = TICK_ETERNITY;
8790 s->req->analyse_exp = TICK_ETERNITY;
8791 s->rep->rex = TICK_ETERNITY;
8792 s->rep->wex = TICK_ETERNITY;
8793 s->rep->analyse_exp = TICK_ETERNITY;
8794}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8795
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8796void free_http_res_rules(struct list *r)
8797{
8798 struct http_res_rule *tr, *pr;
8799
8800 list_for_each_entry_safe(pr, tr, r, list) {
8801 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8802 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8803 free(pr);
8804 }
8805}
8806
8807void free_http_req_rules(struct list *r)
8808{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8809 struct http_req_rule *tr, *pr;
8810
8811 list_for_each_entry_safe(pr, tr, r, list) {
8812 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8813 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8814 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8815
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8816 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8817 free(pr);
8818 }
8819}
8820
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8821/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8822struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8823{
8824 struct http_req_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]8825 struct http_req_action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8826 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8827 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8828
8829 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8830 if (!rule) {
8831 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8832 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8833 }
8834
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8835 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8836 rule->action = HTTP_REQ_ACT_ALLOW;
8837 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]8838 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8839 rule->action = HTTP_REQ_ACT_DENY;
8840 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8841 } else if (!strcmp(args[0], "tarpit")) {
8842 rule->action = HTTP_REQ_ACT_TARPIT;
8843 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8844 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8845 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8846 cur_arg = 1;
8847
8848 while(*args[cur_arg]) {
8849 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8850 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8851 cur_arg+=2;
8852 continue;
8853 } else
8854 break;
8855 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8856 } else if (!strcmp(args[0], "set-nice")) {
8857 rule->action = HTTP_REQ_ACT_SET_NICE;
8858 cur_arg = 1;
8859
8860 if (!*args[cur_arg] ||
8861 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8862 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8863 file, linenum, args[0]);
8864 goto out_err;
8865 }
8866 rule->arg.nice = atoi(args[cur_arg]);
8867 if (rule->arg.nice < -1024)
8868 rule->arg.nice = -1024;
8869 else if (rule->arg.nice > 1024)
8870 rule->arg.nice = 1024;
8871 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8872 } else if (!strcmp(args[0], "set-tos")) {
8873#ifdef IP_TOS
8874 char *err;
8875 rule->action = HTTP_REQ_ACT_SET_TOS;
8876 cur_arg = 1;
8877
8878 if (!*args[cur_arg] ||
8879 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8880 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8881 file, linenum, args[0]);
8882 goto out_err;
8883 }
8884
8885 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8886 if (err && *err != '\0') {
8887 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8888 file, linenum, err, args[0]);
8889 goto out_err;
8890 }
8891 cur_arg++;
8892#else
8893 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8894 goto out_err;
8895#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8896 } else if (!strcmp(args[0], "set-mark")) {
8897#ifdef SO_MARK
8898 char *err;
8899 rule->action = HTTP_REQ_ACT_SET_MARK;
8900 cur_arg = 1;
8901
8902 if (!*args[cur_arg] ||
8903 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8904 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8905 file, linenum, args[0]);
8906 goto out_err;
8907 }
8908
8909 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8910 if (err && *err != '\0') {
8911 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8912 file, linenum, err, args[0]);
8913 goto out_err;
8914 }
8915 cur_arg++;
8916 global.last_checks |= LSTCHK_NETADM;
8917#else
8918 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8919 goto out_err;
8920#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8921 } else if (!strcmp(args[0], "set-log-level")) {
8922 rule->action = HTTP_REQ_ACT_SET_LOGL;
8923 cur_arg = 1;
8924
8925 if (!*args[cur_arg] ||
8926 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8927 bad_log_level:
8928 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8929 file, linenum, args[0]);
8930 goto out_err;
8931 }
8932 if (strcmp(args[cur_arg], "silent") == 0)
8933 rule->arg.loglevel = -1;
8934 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8935 goto bad_log_level;
8936 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8937 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8938 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8939 cur_arg = 1;
8940
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8941 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8942 (*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]8943 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8944 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8945 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8946 }
8947
8948 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8949 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8950 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8951
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8952 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8953 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]8954 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8955 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8956 free(proxy->conf.lfs_file);
8957 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8958 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8959 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]8960 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
8961 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]8962 cur_arg = 1;
8963
8964 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann8f249f42014-06-24 11:10:00 +0200[diff] [blame]8965 (*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]8966 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
8967 file, linenum, args[0]);
8968 goto out_err;
8969 }
8970
8971 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8972 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8973 LIST_INIT(&rule->arg.hdr_add.fmt);
8974
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8975 error = NULL;
8976 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
8977 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
8978 args[cur_arg + 1], error);
8979 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8980 goto out_err;
8981 }
8982
8983 proxy->conf.args.ctx = ARGC_HRQ;
8984 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
8985 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8986 file, linenum);
8987
8988 free(proxy->conf.lfs_file);
8989 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8990 proxy->conf.lfs_line = proxy->conf.args.line;
8991 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8992 } else if (strcmp(args[0], "del-header") == 0) {
8993 rule->action = HTTP_REQ_ACT_DEL_HDR;
8994 cur_arg = 1;
8995
8996 if (!*args[cur_arg] ||
8997 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8998 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
8999 file, linenum, args[0]);
9000 goto out_err;
9001 }
9002
9003 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9004 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9005
9006 proxy->conf.args.ctx = ARGC_HRQ;
9007 free(proxy->conf.lfs_file);
9008 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9009 proxy->conf.lfs_line = proxy->conf.args.line;
9010 cur_arg += 1;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9011 } else if (strcmp(args[0], "redirect") == 0) {
9012 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9013 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9014
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9015 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]9016 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9017 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9018 goto out_err;
9019 }
9020
9021 /* this redirect rule might already contain a parsed condition which
9022 * we'll pass to the http-request rule.
9023 */
9024 rule->action = HTTP_REQ_ACT_REDIR;
9025 rule->arg.redir = redir;
9026 rule->cond = redir->cond;
9027 redir->cond = NULL;
9028 cur_arg = 2;
9029 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9030 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9031 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9032 rule->action = HTTP_REQ_ACT_ADD_ACL;
9033 /*
9034 * '+ 8' for 'add-acl('
9035 * '- 9' for 'add-acl(' + trailing ')'
9036 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9037 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9038
9039 cur_arg = 1;
9040
9041 if (!*args[cur_arg] ||
9042 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9043 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9044 file, linenum, args[0]);
9045 goto out_err;
9046 }
9047
9048 LIST_INIT(&rule->arg.map.key);
9049 proxy->conf.args.ctx = ARGC_HRQ;
9050 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9051 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9052 file, linenum);
9053 free(proxy->conf.lfs_file);
9054 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9055 proxy->conf.lfs_line = proxy->conf.args.line;
9056 cur_arg += 1;
9057 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9058 /* http-request del-acl(<reference (acl name)>) <key pattern> */
9059 rule->action = HTTP_REQ_ACT_DEL_ACL;
9060 /*
9061 * '+ 8' for 'del-acl('
9062 * '- 9' for 'del-acl(' + trailing ')'
9063 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9064 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9065
9066 cur_arg = 1;
9067
9068 if (!*args[cur_arg] ||
9069 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9070 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9071 file, linenum, args[0]);
9072 goto out_err;
9073 }
9074
9075 LIST_INIT(&rule->arg.map.key);
9076 proxy->conf.args.ctx = ARGC_HRQ;
9077 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9078 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9079 file, linenum);
9080 free(proxy->conf.lfs_file);
9081 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9082 proxy->conf.lfs_line = proxy->conf.args.line;
9083 cur_arg += 1;
9084 } else if (strncmp(args[0], "del-map", 7) == 0) {
9085 /* http-request del-map(<reference (map name)>) <key pattern> */
9086 rule->action = HTTP_REQ_ACT_DEL_MAP;
9087 /*
9088 * '+ 8' for 'del-map('
9089 * '- 9' for 'del-map(' + trailing ')'
9090 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9091 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9092
9093 cur_arg = 1;
9094
9095 if (!*args[cur_arg] ||
9096 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9097 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9098 file, linenum, args[0]);
9099 goto out_err;
9100 }
9101
9102 LIST_INIT(&rule->arg.map.key);
9103 proxy->conf.args.ctx = ARGC_HRQ;
9104 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9105 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9106 file, linenum);
9107 free(proxy->conf.lfs_file);
9108 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9109 proxy->conf.lfs_line = proxy->conf.args.line;
9110 cur_arg += 1;
9111 } else if (strncmp(args[0], "set-map", 7) == 0) {
9112 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
9113 rule->action = HTTP_REQ_ACT_SET_MAP;
9114 /*
9115 * '+ 8' for 'set-map('
9116 * '- 9' for 'set-map(' + trailing ')'
9117 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9118 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9119
9120 cur_arg = 1;
9121
9122 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9123 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9124 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9125 file, linenum, args[0]);
9126 goto out_err;
9127 }
9128
9129 LIST_INIT(&rule->arg.map.key);
9130 LIST_INIT(&rule->arg.map.value);
9131 proxy->conf.args.ctx = ARGC_HRQ;
9132
9133 /* key pattern */
9134 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9135 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9136 file, linenum);
9137
9138 /* value pattern */
9139 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9140 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9141 file, linenum);
9142 free(proxy->conf.lfs_file);
9143 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9144 proxy->conf.lfs_line = proxy->conf.args.line;
9145
9146 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9147 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9148 char *errmsg = NULL;
9149 cur_arg = 1;
9150 /* try in the module list */
9151 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9152 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9153 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9154 free(errmsg);
9155 goto out_err;
9156 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9157 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9158 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]9159 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9160 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9161 }
9162
9163 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9164 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9165 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9166
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9167 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9168 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9169 file, linenum, args[0], errmsg);
9170 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9171 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9172 }
9173 rule->cond = cond;
9174 }
9175 else if (*args[cur_arg]) {
9176 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9177 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9178 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9179 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9180 }
9181
9182 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9183 out_err:
9184 free(rule);
9185 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9186}
9187
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9188/* parse an "http-respose" rule */
9189struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9190{
9191 struct http_res_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9192 struct http_res_action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9193 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9194 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9195
9196 rule = calloc(1, sizeof(*rule));
9197 if (!rule) {
9198 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9199 goto out_err;
9200 }
9201
9202 if (!strcmp(args[0], "allow")) {
9203 rule->action = HTTP_RES_ACT_ALLOW;
9204 cur_arg = 1;
9205 } else if (!strcmp(args[0], "deny")) {
9206 rule->action = HTTP_RES_ACT_DENY;
9207 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9208 } else if (!strcmp(args[0], "set-nice")) {
9209 rule->action = HTTP_RES_ACT_SET_NICE;
9210 cur_arg = 1;
9211
9212 if (!*args[cur_arg] ||
9213 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9214 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9215 file, linenum, args[0]);
9216 goto out_err;
9217 }
9218 rule->arg.nice = atoi(args[cur_arg]);
9219 if (rule->arg.nice < -1024)
9220 rule->arg.nice = -1024;
9221 else if (rule->arg.nice > 1024)
9222 rule->arg.nice = 1024;
9223 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9224 } else if (!strcmp(args[0], "set-tos")) {
9225#ifdef IP_TOS
9226 char *err;
9227 rule->action = HTTP_RES_ACT_SET_TOS;
9228 cur_arg = 1;
9229
9230 if (!*args[cur_arg] ||
9231 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9232 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9233 file, linenum, args[0]);
9234 goto out_err;
9235 }
9236
9237 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9238 if (err && *err != '\0') {
9239 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9240 file, linenum, err, args[0]);
9241 goto out_err;
9242 }
9243 cur_arg++;
9244#else
9245 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9246 goto out_err;
9247#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9248 } else if (!strcmp(args[0], "set-mark")) {
9249#ifdef SO_MARK
9250 char *err;
9251 rule->action = HTTP_RES_ACT_SET_MARK;
9252 cur_arg = 1;
9253
9254 if (!*args[cur_arg] ||
9255 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9256 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9257 file, linenum, args[0]);
9258 goto out_err;
9259 }
9260
9261 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9262 if (err && *err != '\0') {
9263 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9264 file, linenum, err, args[0]);
9265 goto out_err;
9266 }
9267 cur_arg++;
9268 global.last_checks |= LSTCHK_NETADM;
9269#else
9270 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9271 goto out_err;
9272#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9273 } else if (!strcmp(args[0], "set-log-level")) {
9274 rule->action = HTTP_RES_ACT_SET_LOGL;
9275 cur_arg = 1;
9276
9277 if (!*args[cur_arg] ||
9278 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9279 bad_log_level:
9280 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9281 file, linenum, args[0]);
9282 goto out_err;
9283 }
9284 if (strcmp(args[cur_arg], "silent") == 0)
9285 rule->arg.loglevel = -1;
9286 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9287 goto bad_log_level;
9288 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9289 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9290 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
9291 cur_arg = 1;
9292
9293 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9294 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9295 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9296 file, linenum, args[0]);
9297 goto out_err;
9298 }
9299
9300 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9301 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9302 LIST_INIT(&rule->arg.hdr_add.fmt);
9303
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9304 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9305 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]9306 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9307 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9308 free(proxy->conf.lfs_file);
9309 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9310 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9311 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9312 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9313 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]9314 cur_arg = 1;
9315
9316 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmanna772b942014-08-08 17:29:06 +0200[diff] [blame]9317 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9318 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9319 file, linenum, args[0]);
9320 goto out_err;
9321 }
9322
9323 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9324 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9325 LIST_INIT(&rule->arg.hdr_add.fmt);
9326
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9327 error = NULL;
9328 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9329 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9330 args[cur_arg + 1], error);
9331 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9332 goto out_err;
9333 }
9334
9335 proxy->conf.args.ctx = ARGC_HRQ;
9336 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9337 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9338 file, linenum);
9339
9340 free(proxy->conf.lfs_file);
9341 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9342 proxy->conf.lfs_line = proxy->conf.args.line;
9343 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9344 } else if (strcmp(args[0], "del-header") == 0) {
9345 rule->action = HTTP_RES_ACT_DEL_HDR;
9346 cur_arg = 1;
9347
9348 if (!*args[cur_arg] ||
9349 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9350 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9351 file, linenum, args[0]);
9352 goto out_err;
9353 }
9354
9355 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9356 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9357
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9358 proxy->conf.args.ctx = ARGC_HRS;
9359 free(proxy->conf.lfs_file);
9360 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9361 proxy->conf.lfs_line = proxy->conf.args.line;
9362 cur_arg += 1;
9363 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9364 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9365 rule->action = HTTP_RES_ACT_ADD_ACL;
9366 /*
9367 * '+ 8' for 'add-acl('
9368 * '- 9' for 'add-acl(' + trailing ')'
9369 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9370 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9371
9372 cur_arg = 1;
9373
9374 if (!*args[cur_arg] ||
9375 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9376 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9377 file, linenum, args[0]);
9378 goto out_err;
9379 }
9380
9381 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9382 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9383 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9384 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9385 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9386 free(proxy->conf.lfs_file);
9387 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9388 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9389
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9390 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9391 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9392 /* http-response del-acl(<reference (acl name)>) <key pattern> */
9393 rule->action = HTTP_RES_ACT_DEL_ACL;
9394 /*
9395 * '+ 8' for 'del-acl('
9396 * '- 9' for 'del-acl(' + trailing ')'
9397 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9398 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9399
9400 cur_arg = 1;
9401
9402 if (!*args[cur_arg] ||
9403 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9404 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9405 file, linenum, args[0]);
9406 goto out_err;
9407 }
9408
9409 LIST_INIT(&rule->arg.map.key);
9410 proxy->conf.args.ctx = ARGC_HRS;
9411 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9412 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9413 file, linenum);
9414 free(proxy->conf.lfs_file);
9415 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9416 proxy->conf.lfs_line = proxy->conf.args.line;
9417 cur_arg += 1;
9418 } else if (strncmp(args[0], "del-map", 7) == 0) {
9419 /* http-response del-map(<reference (map name)>) <key pattern> */
9420 rule->action = HTTP_RES_ACT_DEL_MAP;
9421 /*
9422 * '+ 8' for 'del-map('
9423 * '- 9' for 'del-map(' + trailing ')'
9424 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9425 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9426
9427 cur_arg = 1;
9428
9429 if (!*args[cur_arg] ||
9430 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9431 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9432 file, linenum, args[0]);
9433 goto out_err;
9434 }
9435
9436 LIST_INIT(&rule->arg.map.key);
9437 proxy->conf.args.ctx = ARGC_HRS;
9438 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9439 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9440 file, linenum);
9441 free(proxy->conf.lfs_file);
9442 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9443 proxy->conf.lfs_line = proxy->conf.args.line;
9444 cur_arg += 1;
9445 } else if (strncmp(args[0], "set-map", 7) == 0) {
9446 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
9447 rule->action = HTTP_RES_ACT_SET_MAP;
9448 /*
9449 * '+ 8' for 'set-map('
9450 * '- 9' for 'set-map(' + trailing ')'
9451 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9452 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9453
9454 cur_arg = 1;
9455
9456 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9457 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9458 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9459 file, linenum, args[0]);
9460 goto out_err;
9461 }
9462
9463 LIST_INIT(&rule->arg.map.key);
9464 LIST_INIT(&rule->arg.map.value);
9465
9466 proxy->conf.args.ctx = ARGC_HRS;
9467
9468 /* key pattern */
9469 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9470 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9471 file, linenum);
9472
9473 /* value pattern */
9474 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9475 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9476 file, linenum);
9477
9478 free(proxy->conf.lfs_file);
9479 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9480 proxy->conf.lfs_line = proxy->conf.args.line;
9481
9482 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9483 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9484 char *errmsg = NULL;
9485 cur_arg = 1;
9486 /* try in the module list */
9487 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9488 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9489 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9490 free(errmsg);
9491 goto out_err;
9492 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9493 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9494 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]9495 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
9496 goto out_err;
9497 }
9498
9499 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9500 struct acl_cond *cond;
9501 char *errmsg = NULL;
9502
9503 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9504 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9505 file, linenum, args[0], errmsg);
9506 free(errmsg);
9507 goto out_err;
9508 }
9509 rule->cond = cond;
9510 }
9511 else if (*args[cur_arg]) {
9512 Alert("parsing [%s:%d]: 'http-response %s' expects"
9513 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9514 file, linenum, args[0], args[cur_arg]);
9515 goto out_err;
9516 }
9517
9518 return rule;
9519 out_err:
9520 free(rule);
9521 return NULL;
9522}
9523
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9524/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9525 * with <err> filled with the error message. If <use_fmt> is not null, builds a
9526 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9527 */
9528struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9529 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9530{
9531 struct redirect_rule *rule;
9532 int cur_arg;
9533 int type = REDIRECT_TYPE_NONE;
9534 int code = 302;
9535 const char *destination = NULL;
9536 const char *cookie = NULL;
9537 int cookie_set = 0;
9538 unsigned int flags = REDIRECT_FLAG_NONE;
9539 struct acl_cond *cond = NULL;
9540
9541 cur_arg = 0;
9542 while (*(args[cur_arg])) {
9543 if (strcmp(args[cur_arg], "location") == 0) {
9544 if (!*args[cur_arg + 1])
9545 goto missing_arg;
9546
9547 type = REDIRECT_TYPE_LOCATION;
9548 cur_arg++;
9549 destination = args[cur_arg];
9550 }
9551 else if (strcmp(args[cur_arg], "prefix") == 0) {
9552 if (!*args[cur_arg + 1])
9553 goto missing_arg;
9554
9555 type = REDIRECT_TYPE_PREFIX;
9556 cur_arg++;
9557 destination = args[cur_arg];
9558 }
9559 else if (strcmp(args[cur_arg], "scheme") == 0) {
9560 if (!*args[cur_arg + 1])
9561 goto missing_arg;
9562
9563 type = REDIRECT_TYPE_SCHEME;
9564 cur_arg++;
9565 destination = args[cur_arg];
9566 }
9567 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9568 if (!*args[cur_arg + 1])
9569 goto missing_arg;
9570
9571 cur_arg++;
9572 cookie = args[cur_arg];
9573 cookie_set = 1;
9574 }
9575 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9576 if (!*args[cur_arg + 1])
9577 goto missing_arg;
9578
9579 cur_arg++;
9580 cookie = args[cur_arg];
9581 cookie_set = 0;
9582 }
9583 else if (strcmp(args[cur_arg], "code") == 0) {
9584 if (!*args[cur_arg + 1])
9585 goto missing_arg;
9586
9587 cur_arg++;
9588 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9589 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9590 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9591 "'%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]9592 args[cur_arg - 1], args[cur_arg]);
9593 return NULL;
9594 }
9595 }
9596 else if (!strcmp(args[cur_arg],"drop-query")) {
9597 flags |= REDIRECT_FLAG_DROP_QS;
9598 }
9599 else if (!strcmp(args[cur_arg],"append-slash")) {
9600 flags |= REDIRECT_FLAG_APPEND_SLASH;
9601 }
9602 else if (strcmp(args[cur_arg], "if") == 0 ||
9603 strcmp(args[cur_arg], "unless") == 0) {
9604 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9605 if (!cond) {
9606 memprintf(errmsg, "error in condition: %s", *errmsg);
9607 return NULL;
9608 }
9609 break;
9610 }
9611 else {
9612 memprintf(errmsg,
9613 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9614 args[cur_arg]);
9615 return NULL;
9616 }
9617 cur_arg++;
9618 }
9619
9620 if (type == REDIRECT_TYPE_NONE) {
9621 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9622 return NULL;
9623 }
9624
9625 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
9626 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9627 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9628
9629 if (!use_fmt) {
9630 /* old-style static redirect rule */
9631 rule->rdr_str = strdup(destination);
9632 rule->rdr_len = strlen(destination);
9633 }
9634 else {
9635 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9636
9637 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
9638 * if prefix == "/", we don't want to add anything, otherwise it
9639 * makes it hard for the user to configure a self-redirection.
9640 */
Godbach543b9782014-12-18 15:44:58 +0800[diff] [blame]9641 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9642 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9643 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]9644 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9645 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9646 free(curproxy->conf.lfs_file);
9647 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
9648 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9649 }
9650 }
9651
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9652 if (cookie) {
9653 /* depending on cookie_set, either we want to set the cookie, or to clear it.
9654 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
9655 */
9656 rule->cookie_len = strlen(cookie);
9657 if (cookie_set) {
9658 rule->cookie_str = malloc(rule->cookie_len + 10);
9659 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9660 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
9661 rule->cookie_len += 9;
9662 } else {
9663 rule->cookie_str = malloc(rule->cookie_len + 21);
9664 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9665 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
9666 rule->cookie_len += 20;
9667 }
9668 }
9669 rule->type = type;
9670 rule->code = code;
9671 rule->flags = flags;
9672 LIST_INIT(&rule->list);
9673 return rule;
9674
9675 missing_arg:
9676 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9677 return NULL;
9678}
9679
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9680/************************************************************************/
9681/* The code below is dedicated to ACL parsing and matching */
9682/************************************************************************/
9683
9684
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9685/* This function ensures that the prerequisites for an L7 fetch are ready,
9686 * which means that a request or response is ready. If some data is missing,
9687 * 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]9688 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9689 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9690 *
9691 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9692 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9693 * decide whether or not an HTTP message is present ;
9694 * 0 if the requested data cannot be fetched or if it is certain that
9695 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9696 * 1 if an HTTP message is ready
9697 */
9698static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9699smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9700 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9701{
9702 struct http_txn *txn = l7;
9703 struct http_msg *msg = &txn->req;
9704
9705 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9706 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9707 */
9708
9709 if (unlikely(!s || !txn))
9710 return 0;
9711
9712 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9713 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9714
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9715 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9716 if (unlikely(!s->req))
9717 return 0;
9718
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9719 /* If the buffer does not leave enough free space at the end,
9720 * we must first realign it.
9721 */
9722 if (s->req->buf->p > s->req->buf->data &&
9723 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
9724 buffer_slow_realign(s->req->buf);
9725
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9726 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9727 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9728 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9729
9730 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9731 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9732 http_msg_analyzer(msg, &txn->hdr_idx);
9733
9734 /* Still no valid request ? */
9735 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9736 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9737 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9738 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9739 }
9740 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9741 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9742 return 0;
9743 }
9744
9745 /* OK we just got a valid HTTP request. We have some minor
9746 * preparation to perform so that further checks can rely
9747 * on HTTP tests.
9748 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9749
9750 /* If the request was parsed but was too large, we must absolutely
9751 * return an error so that it is not processed. At the moment this
9752 * cannot happen, but if the parsers are to change in the future,
9753 * we want this check to be maintained.
9754 */
9755 if (unlikely(s->req->buf->i + s->req->buf->p >
9756 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
9757 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9758 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9759 return 1;
9760 }
9761
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9762 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9763 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
9764 s->flags |= SN_REDIRECTABLE;
9765
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9766 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
9767 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9768 }
9769
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9770 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9771 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9772 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9773
9774 /* otherwise everything's ready for the request */
9775 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9776 else {
9777 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9778 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
9779 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9780 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9781 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9782 }
9783
9784 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9785 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9786 return 1;
9787}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9788
Willy Tarreaua4ba9db2014-06-25 16:56:41 +0200[diff] [blame]9789/* Note: these functinos *do* modify the sample. Even in case of success, at
9790 * least the type and uint value are modified.
9791 */
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9792#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9793 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]9794
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9795#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9796 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]9797
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9798
9799/* 1. Check on METHOD
9800 * We use the pre-parsed method if it is known, and store its number as an
9801 * integer. If it is unknown, we use the pointer and the length.
9802 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9803static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9804{
9805 int len, meth;
9806
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]9807 len = strlen(text);
9808 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9809
9810 pattern->val.i = meth;
9811 if (meth == HTTP_METH_OTHER) {
Willy Tarreau71196f32014-08-29 15:15:50 +0200[diff] [blame]9812 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9813 pattern->len = len;
9814 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9815 else {
9816 pattern->ptr.str = NULL;
9817 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9818 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9819 return 1;
9820}
9821
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9822/* This function fetches the method of current HTTP request and stores
9823 * it in the global pattern struct as a chunk. There are two possibilities :
9824 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
9825 * in <len> and <ptr> is NULL ;
9826 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
9827 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9828 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9829 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9830static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9831smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9832 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9833{
9834 int meth;
9835 struct http_txn *txn = l7;
9836
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9837 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9838
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9839 meth = txn->meth;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9840 smp->type = SMP_T_METH;
9841 smp->data.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9842 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9843 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
9844 /* ensure the indexes are not affected */
9845 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9846 smp->flags |= SMP_F_CONST;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9847 smp->data.meth.str.len = txn->req.sl.rq.m_l;
9848 smp->data.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9849 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9850 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9851 return 1;
9852}
9853
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9854/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9855static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9856{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9857 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9858 struct pattern_list *lst;
9859 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9860
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9861 list_for_each_entry(lst, &expr->patterns, list) {
9862 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9863
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9864 /* well-known method */
9865 if (pattern->val.i != HTTP_METH_OTHER) {
9866 if (smp->data.meth.meth == pattern->val.i)
9867 return pattern;
9868 else
9869 continue;
9870 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9871
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9872 /* Other method, we must compare the strings */
9873 if (pattern->len != smp->data.meth.str.len)
9874 continue;
9875
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9876 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Willy Tarreauc62a0c62014-08-28 20:42:57 +0200[diff] [blame]9877 if ((icase && strncasecmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0) ||
9878 (!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]9879 return pattern;
9880 }
9881 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9882}
9883
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9884static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9885smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9886 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9887{
9888 struct http_txn *txn = l7;
9889 char *ptr;
9890 int len;
9891
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9892 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9893
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9894 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9895 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9896
9897 while ((len-- > 0) && (*ptr++ != '/'));
9898 if (len <= 0)
9899 return 0;
9900
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9901 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9902 smp->data.str.str = ptr;
9903 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9904
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9905 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9906 return 1;
9907}
9908
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9909static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9910smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9911 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9912{
9913 struct http_txn *txn = l7;
9914 char *ptr;
9915 int len;
9916
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9917 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9918
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9919 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9920 return 0;
9921
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9922 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9923 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9924
9925 while ((len-- > 0) && (*ptr++ != '/'));
9926 if (len <= 0)
9927 return 0;
9928
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9929 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9930 smp->data.str.str = ptr;
9931 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9932
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9933 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9934 return 1;
9935}
9936
9937/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9938static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9939smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9940 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9941{
9942 struct http_txn *txn = l7;
9943 char *ptr;
9944 int len;
9945
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9946 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9947
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9948 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9949 return 0;
9950
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9951 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9952 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9953
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9954 smp->type = SMP_T_UINT;
9955 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9956 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9957 return 1;
9958}
9959
9960/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9961static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9962smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9963 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9964{
9965 struct http_txn *txn = l7;
9966
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9967 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9968
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9969 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9970 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9971 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9972 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9973 return 1;
9974}
9975
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9976static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9977smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9978 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9979{
9980 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9981 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9982
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9983 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9984
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]9985 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]9986 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]9987 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9988
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9989 smp->type = SMP_T_IPV4;
9990 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9991 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9992 return 1;
9993}
9994
9995static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9996smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9997 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9998{
9999 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10000 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10001
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10002 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10003
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10004 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]10005 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10006 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10007
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10008 smp->type = SMP_T_UINT;
10009 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10010 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10011 return 1;
10012}
10013
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10014/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10015 * Accepts an optional argument of type string containing the header field name,
10016 * and an optional argument of type signed or unsigned integer to request an
10017 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10018 * headers are considered from the first one. It does not stop on commas and
10019 * returns full lines instead (useful for User-Agent or Date for example).
10020 */
10021static int
10022smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10023 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10024{
10025 struct http_txn *txn = l7;
10026 struct hdr_idx *idx = &txn->hdr_idx;
10027 struct hdr_ctx *ctx = smp->ctx.a[0];
10028 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
10029 int occ = 0;
10030 const char *name_str = NULL;
10031 int name_len = 0;
10032
10033 if (!ctx) {
10034 /* first call */
10035 ctx = &static_hdr_ctx;
10036 ctx->idx = 0;
10037 smp->ctx.a[0] = ctx;
10038 }
10039
10040 if (args) {
10041 if (args[0].type != ARGT_STR)
10042 return 0;
10043 name_str = args[0].data.str.str;
10044 name_len = args[0].data.str.len;
10045
10046 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10047 occ = args[1].data.uint;
10048 }
10049
10050 CHECK_HTTP_MESSAGE_FIRST();
10051
10052 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10053 /* search for header from the beginning */
10054 ctx->idx = 0;
10055
10056 if (!occ && !(opt & SMP_OPT_ITERATE))
10057 /* no explicit occurrence and single fetch => last header by default */
10058 occ = -1;
10059
10060 if (!occ)
10061 /* prepare to report multiple occurrences for ACL fetches */
10062 smp->flags |= SMP_F_NOT_LAST;
10063
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10064 smp->type = SMP_T_STR;
10065 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10066 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
10067 return 1;
10068
10069 smp->flags &= ~SMP_F_NOT_LAST;
10070 return 0;
10071}
10072
10073/* 6. Check on HTTP header count. The number of occurrences is returned.
10074 * Accepts exactly 1 argument of type string. It does not stop on commas and
10075 * returns full lines instead (useful for User-Agent or Date for example).
10076 */
10077static int
10078smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10079 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10080{
10081 struct http_txn *txn = l7;
10082 struct hdr_idx *idx = &txn->hdr_idx;
10083 struct hdr_ctx ctx;
10084 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
10085 int cnt;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10086 const char *name = NULL;
10087 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10088
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10089 if (args && args->type == ARGT_STR) {
10090 name = args->data.str.str;
10091 len = args->data.str.len;
10092 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10093
10094 CHECK_HTTP_MESSAGE_FIRST();
10095
10096 ctx.idx = 0;
10097 cnt = 0;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10098 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10099 cnt++;
10100
10101 smp->type = SMP_T_UINT;
10102 smp->data.uint = cnt;
10103 smp->flags = SMP_F_VOL_HDR;
10104 return 1;
10105}
10106
10107/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10108 * Accepts an optional argument of type string containing the header field name,
10109 * and an optional argument of type signed or unsigned integer to request an
10110 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10111 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10112 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10113static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10114smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10115 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10116{
10117 struct http_txn *txn = l7;
10118 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10119 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10120 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]10121 int occ = 0;
10122 const char *name_str = NULL;
10123 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10124
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10125 if (!ctx) {
10126 /* first call */
10127 ctx = &static_hdr_ctx;
10128 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10129 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10130 }
10131
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10132 if (args) {
10133 if (args[0].type != ARGT_STR)
10134 return 0;
10135 name_str = args[0].data.str.str;
10136 name_len = args[0].data.str.len;
10137
10138 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10139 occ = args[1].data.uint;
10140 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10141
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10142 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10143
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10144 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10145 /* search for header from the beginning */
10146 ctx->idx = 0;
10147
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10148 if (!occ && !(opt & SMP_OPT_ITERATE))
10149 /* no explicit occurrence and single fetch => last header by default */
10150 occ = -1;
10151
10152 if (!occ)
10153 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10154 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10155
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10156 smp->type = SMP_T_STR;
10157 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10158 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]10159 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10160
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10161 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10162 return 0;
10163}
10164
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10165/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10166 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10167 */
10168static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10169smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10170 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10171{
10172 struct http_txn *txn = l7;
10173 struct hdr_idx *idx = &txn->hdr_idx;
10174 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10175 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]10176 int cnt;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10177 const char *name = NULL;
10178 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10179
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10180 if (args && args->type == ARGT_STR) {
10181 name = args->data.str.str;
10182 len = args->data.str.len;
10183 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10184
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10185 CHECK_HTTP_MESSAGE_FIRST();
10186
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10187 ctx.idx = 0;
10188 cnt = 0;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10189 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10190 cnt++;
10191
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10192 smp->type = SMP_T_UINT;
10193 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10194 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10195 return 1;
10196}
10197
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10198/* Fetch an HTTP header's integer value. The integer value is returned. It
10199 * takes a mandatory argument of type string and an optional one of type int
10200 * to designate a specific occurrence. It returns an unsigned integer, which
10201 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10202 */
10203static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10204smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10205 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10206{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10207 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10208
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10209 if (ret > 0) {
10210 smp->type = SMP_T_UINT;
10211 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10212 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10213
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10214 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10215}
10216
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10217/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10218 * and an optional one of type int to designate a specific occurrence.
10219 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10220 */
10221static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10222smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10223 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10224{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10225 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10226
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10227 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10228 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
10229 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10230 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10231 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10232 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10233 if (smp->data.str.len < temp->size - 1) {
10234 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
10235 temp->str[smp->data.str.len] = '\0';
10236 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
10237 smp->type = SMP_T_IPV6;
10238 break;
10239 }
10240 }
10241 }
10242
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10243 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10244 if (!(smp->flags & SMP_F_NOT_LAST))
10245 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10246 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10247 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10248}
10249
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10250/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10251 * the first '/' after the possible hostname, and ends before the possible '?'.
10252 */
10253static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10254smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10255 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10256{
10257 struct http_txn *txn = l7;
10258 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10259
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10260 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10261
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10262 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]10263 ptr = http_get_path(txn);
10264 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10265 return 0;
10266
10267 /* OK, we got the '/' ! */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10268 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10269 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10270
10271 while (ptr < end && *ptr != '?')
10272 ptr++;
10273
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10274 smp->data.str.len = ptr - smp->data.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10275 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10276 return 1;
10277}
10278
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10279/* This produces a concatenation of the first occurrence of the Host header
10280 * followed by the path component if it begins with a slash ('/'). This means
10281 * that '*' will not be added, resulting in exactly the first Host entry.
10282 * If no Host header is found, then the path is returned as-is. The returned
10283 * 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]10284 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10285 */
10286static int
10287smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10288 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10289{
10290 struct http_txn *txn = l7;
10291 char *ptr, *end, *beg;
10292 struct hdr_ctx ctx;
Willy Tarreauc1fbbd42014-06-24 17:27:02 +0200[diff] [blame]10293 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10294
10295 CHECK_HTTP_MESSAGE_FIRST();
10296
10297 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10298 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]10299 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10300
10301 /* 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]10302 temp = get_trash_chunk();
10303 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10304 smp->type = SMP_T_STR;
Willy Tarreauc1fbbd42014-06-24 17:27:02 +0200[diff] [blame]10305 smp->data.str.str = temp->str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10306 smp->data.str.len = ctx.vlen;
10307
10308 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10309 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]10310 beg = http_get_path(txn);
10311 if (!beg)
10312 beg = end;
10313
10314 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10315
10316 if (beg < ptr && *beg == '/') {
10317 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
10318 smp->data.str.len += ptr - beg;
10319 }
10320
10321 smp->flags = SMP_F_VOL_1ST;
10322 return 1;
10323}
10324
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10325/* This produces a 32-bit hash of the concatenation of the first occurrence of
10326 * the Host header followed by the path component if it begins with a slash ('/').
10327 * This means that '*' will not be added, resulting in exactly the first Host
10328 * 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]10329 * is hashed using the path hash followed by a full avalanche hash and provides a
10330 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10331 * high-traffic sites without having to store whole paths.
10332 */
10333static int
10334smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10335 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10336{
10337 struct http_txn *txn = l7;
10338 struct hdr_ctx ctx;
10339 unsigned int hash = 0;
10340 char *ptr, *beg, *end;
10341 int len;
10342
10343 CHECK_HTTP_MESSAGE_FIRST();
10344
10345 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10346 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]10347 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10348 ptr = ctx.line + ctx.val;
10349 len = ctx.vlen;
10350 while (len--)
10351 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10352 }
10353
10354 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10355 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]10356 beg = http_get_path(txn);
10357 if (!beg)
10358 beg = end;
10359
10360 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10361
10362 if (beg < ptr && *beg == '/') {
10363 while (beg < ptr)
10364 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10365 }
10366 hash = full_hash(hash);
10367
10368 smp->type = SMP_T_UINT;
10369 smp->data.uint = hash;
10370 smp->flags = SMP_F_VOL_1ST;
10371 return 1;
10372}
10373
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10374/* 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]10375 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10376 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10377 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10378 * that in environments where IPv6 is insignificant, truncating the output to
10379 * 8 bytes would still work.
10380 */
10381static int
10382smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10383 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10384{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10385 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10386 struct connection *cli_conn = objt_conn(l4->si[0].end);
10387
10388 if (!cli_conn)
10389 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10390
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10391 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10392 return 0;
10393
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10394 temp = get_trash_chunk();
Willy Tarreau0dff81c2014-07-15 21:34:06 +0200[diff] [blame]10395 *(unsigned int *)temp->str = htonl(smp->data.uint);
10396 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10397
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10398 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10399 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10400 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]10401 temp->len += 4;
10402 break;
10403 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10404 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]10405 temp->len += 16;
10406 break;
10407 default:
10408 return 0;
10409 }
10410
10411 smp->data.str = *temp;
10412 smp->type = SMP_T_BIN;
10413 return 1;
10414}
10415
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10416static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10417smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10418 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10419{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10420 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10421 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10422 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10423
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10424 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10425
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10426 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10427 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10428 return 1;
10429}
10430
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10431/* return a valid test if the current request is the first one on the connection */
10432static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10433smp_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]10434 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10435{
10436 if (!s)
10437 return 0;
10438
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10439 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10440 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10441 return 1;
10442}
10443
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10444/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10445static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10446smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10447 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10448{
10449
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10450 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10451 return 0;
10452
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10453 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10454
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10455 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10456 return 0;
10457
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10458 smp->type = SMP_T_BOOL;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10459 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]10460 return 1;
10461}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10462
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10463/* Accepts exactly 1 argument of type userlist */
10464static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10465smp_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]10466 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10467{
10468
10469 if (!args || args->type != ARGT_USR)
10470 return 0;
10471
10472 CHECK_HTTP_MESSAGE_FIRST();
10473
10474 if (!get_http_auth(l4))
10475 return 0;
10476
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10477 /* if the user does not belong to the userlist or has a wrong password,
10478 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10479 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10480 */
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10481 if (!check_user(args->data.usr, l4->txn.auth.user, l4->txn.auth.pass))
10482 return 0;
10483
10484 /* pat_match_auth() will need the user list */
10485 smp->ctx.a[0] = args->data.usr;
10486
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10487 smp->type = SMP_T_STR;
10488 smp->flags = SMP_F_CONST;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10489 smp->data.str.str = l4->txn.auth.user;
10490 smp->data.str.len = strlen(l4->txn.auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10491
10492 return 1;
10493}
10494
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10495/* Try to find the next occurrence of a cookie name in a cookie header value.
10496 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10497 * the cookie value is returned into *value and *value_l, and the function
10498 * returns a pointer to the next pointer to search from if the value was found.
10499 * Otherwise if the cookie was not found, NULL is returned and neither value
10500 * nor value_l are touched. The input <hdr> string should first point to the
10501 * header's value, and the <hdr_end> pointer must point to the first character
10502 * not part of the value. <list> must be non-zero if value may represent a list
10503 * of values (cookie headers). This makes it faster to abort parsing when no
10504 * list is expected.
10505 */
10506static char *
10507extract_cookie_value(char *hdr, const char *hdr_end,
10508 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10509 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10510{
10511 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10512 char *next;
10513
10514 /* we search at least a cookie name followed by an equal, and more
10515 * generally something like this :
10516 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
10517 */
10518 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
10519 /* Iterate through all cookies on this line */
10520
10521 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
10522 att_beg++;
10523
10524 /* find att_end : this is the first character after the last non
10525 * space before the equal. It may be equal to hdr_end.
10526 */
10527 equal = att_end = att_beg;
10528
10529 while (equal < hdr_end) {
10530 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
10531 break;
10532 if (http_is_spht[(unsigned char)*equal++])
10533 continue;
10534 att_end = equal;
10535 }
10536
10537 /* here, <equal> points to '=', a delimitor or the end. <att_end>
10538 * is between <att_beg> and <equal>, both may be identical.
10539 */
10540
10541 /* look for end of cookie if there is an equal sign */
10542 if (equal < hdr_end && *equal == '=') {
10543 /* look for the beginning of the value */
10544 val_beg = equal + 1;
10545 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
10546 val_beg++;
10547
10548 /* find the end of the value, respecting quotes */
10549 next = find_cookie_value_end(val_beg, hdr_end);
10550
10551 /* make val_end point to the first white space or delimitor after the value */
10552 val_end = next;
10553 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
10554 val_end--;
10555 } else {
10556 val_beg = val_end = next = equal;
10557 }
10558
10559 /* We have nothing to do with attributes beginning with '$'. However,
10560 * they will automatically be removed if a header before them is removed,
10561 * since they're supposed to be linked together.
10562 */
10563 if (*att_beg == '$')
10564 continue;
10565
10566 /* Ignore cookies with no equal sign */
10567 if (equal == next)
10568 continue;
10569
10570 /* Now we have the cookie name between att_beg and att_end, and
10571 * its value between val_beg and val_end.
10572 */
10573
10574 if (att_end - att_beg == cookie_name_l &&
10575 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
10576 /* let's return this value and indicate where to go on from */
10577 *value = val_beg;
10578 *value_l = val_end - val_beg;
10579 return next + 1;
10580 }
10581
10582 /* Set-Cookie headers only have the name in the first attr=value part */
10583 if (!list)
10584 break;
10585 }
10586
10587 return NULL;
10588}
10589
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10590/* Fetch a captured HTTP request header. The index is the position of
10591 * the "capture" option in the configuration file
10592 */
10593static int
10594smp_fetch_capture_header_req(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10595 const struct arg *args, struct sample *smp, const char *kw)
10596{
10597 struct proxy *fe = l4->fe;
10598 struct http_txn *txn = l7;
10599 int idx;
10600
10601 if (!args || args->type != ARGT_UINT)
10602 return 0;
10603
10604 idx = args->data.uint;
10605
10606 if (idx > (fe->nb_req_cap - 1) || txn->req.cap == NULL || txn->req.cap[idx] == NULL)
10607 return 0;
10608
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10609 smp->type = SMP_T_STR;
10610 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10611 smp->data.str.str = txn->req.cap[idx];
10612 smp->data.str.len = strlen(txn->req.cap[idx]);
10613
10614 return 1;
10615}
10616
10617/* Fetch a captured HTTP response header. The index is the position of
10618 * the "capture" option in the configuration file
10619 */
10620static int
10621smp_fetch_capture_header_res(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10622 const struct arg *args, struct sample *smp, const char *kw)
10623{
10624 struct proxy *fe = l4->fe;
10625 struct http_txn *txn = l7;
10626 int idx;
10627
10628 if (!args || args->type != ARGT_UINT)
10629 return 0;
10630
10631 idx = args->data.uint;
10632
10633 if (idx > (fe->nb_rsp_cap - 1) || txn->rsp.cap == NULL || txn->rsp.cap[idx] == NULL)
10634 return 0;
10635
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10636 smp->type = SMP_T_STR;
10637 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10638 smp->data.str.str = txn->rsp.cap[idx];
10639 smp->data.str.len = strlen(txn->rsp.cap[idx]);
10640
10641 return 1;
10642}
10643
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10644/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
10645static int
10646smp_fetch_capture_req_method(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10647 const struct arg *args, struct sample *smp, const char *kw)
10648{
10649 struct chunk *temp;
10650 struct http_txn *txn = l7;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10651 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10652
10653 if (!txn->uri)
10654 return 0;
10655
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10656 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10657
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10658 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10659 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10660
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10661 temp = get_trash_chunk();
10662 temp->str = txn->uri;
10663 temp->len = ptr - txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10664 smp->data.str = *temp;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10665 smp->type = SMP_T_STR;
10666 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10667
10668 return 1;
10669
10670}
10671
10672/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
10673static int
10674smp_fetch_capture_req_uri(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10675 const struct arg *args, struct sample *smp, const char *kw)
10676{
10677 struct chunk *temp;
10678 struct http_txn *txn = l7;
10679 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10680
10681 if (!txn->uri)
10682 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10683
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10684 ptr = txn->uri;
10685
10686 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10687 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10688
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10689 if (!*ptr)
10690 return 0;
10691
10692 ptr++; /* skip the space */
10693
10694 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10695 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10696 if (!ptr)
10697 return 0;
10698 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
10699 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10700
10701 smp->data.str = *temp;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10702 smp->data.str.len = ptr - temp->str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10703 smp->type = SMP_T_STR;
10704 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10705
10706 return 1;
10707}
10708
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10709/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
10710 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10711 */
10712static int
10713smp_fetch_capture_req_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10714 const struct arg *args, struct sample *smp, const char *kw)
10715{
10716 struct http_txn *txn = l7;
10717
10718 if (txn->req.msg_state < HTTP_MSG_HDR_FIRST)
10719 return 0;
10720
10721 if (txn->req.flags & HTTP_MSGF_VER_11)
10722 smp->data.str.str = "HTTP/1.1";
10723 else
10724 smp->data.str.str = "HTTP/1.0";
10725
10726 smp->data.str.len = 8;
10727 smp->type = SMP_T_STR;
10728 smp->flags = SMP_F_CONST;
10729 return 1;
10730
10731}
10732
10733/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
10734 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10735 */
10736static int
10737smp_fetch_capture_res_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10738 const struct arg *args, struct sample *smp, const char *kw)
10739{
10740 struct http_txn *txn = l7;
10741
10742 if (txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
10743 return 0;
10744
10745 if (txn->rsp.flags & HTTP_MSGF_VER_11)
10746 smp->data.str.str = "HTTP/1.1";
10747 else
10748 smp->data.str.str = "HTTP/1.0";
10749
10750 smp->data.str.len = 8;
10751 smp->type = SMP_T_STR;
10752 smp->flags = SMP_F_CONST;
10753 return 1;
10754
10755}
10756
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10757
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10758/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10759 * 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]10760 * 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]10761 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10762 * 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]10763 * Accepts exactly 1 argument of type string. If the input options indicate
10764 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10765 * The returned sample is of type CSTR. Can be used to parse cookies in other
10766 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10767 */
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10768int smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10769 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10770{
10771 struct http_txn *txn = l7;
10772 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10773 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10774 const struct http_msg *msg;
10775 const char *hdr_name;
10776 int hdr_name_len;
10777 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10778 int occ = 0;
10779 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10780
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10781 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10782 return 0;
10783
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10784 if (!ctx) {
10785 /* first call */
10786 ctx = &static_hdr_ctx;
10787 ctx->idx = 0;
10788 smp->ctx.a[2] = ctx;
10789 }
10790
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10791 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10792
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10793 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10794 msg = &txn->req;
10795 hdr_name = "Cookie";
10796 hdr_name_len = 6;
10797 } else {
10798 msg = &txn->rsp;
10799 hdr_name = "Set-Cookie";
10800 hdr_name_len = 10;
10801 }
10802
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10803 if (!occ && !(opt & SMP_OPT_ITERATE))
10804 /* no explicit occurrence and single fetch => last cookie by default */
10805 occ = -1;
10806
10807 /* OK so basically here, either we want only one value and it's the
10808 * last one, or we want to iterate over all of them and we fetch the
10809 * next one.
10810 */
10811
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10812 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10813 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10814 /* search for the header from the beginning, we must first initialize
10815 * the search parameters.
10816 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10817 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10818 ctx->idx = 0;
10819 }
10820
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10821 smp->flags |= SMP_F_VOL_HDR;
10822
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10823 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10824 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
10825 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10826 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
10827 goto out;
10828
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10829 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10830 continue;
10831
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10832 smp->ctx.a[0] = ctx->line + ctx->val;
10833 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10834 }
10835
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10836 smp->type = SMP_T_STR;
10837 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10838 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]10839 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10840 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10841 &smp->data.str.str,
10842 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10843 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10844 found = 1;
10845 if (occ >= 0) {
10846 /* one value was returned into smp->data.str.{str,len} */
10847 smp->flags |= SMP_F_NOT_LAST;
10848 return 1;
10849 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10850 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10851 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10852 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10853 /* all cookie headers and values were scanned. If we're looking for the
10854 * last occurrence, we may return it now.
10855 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10856 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10857 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10858 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10859}
10860
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10861/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10862 * 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]10863 * multiple cookies may be parsed on the same line. The returned sample is of
10864 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10865 */
10866static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10867smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10868 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10869{
10870 struct http_txn *txn = l7;
10871 struct hdr_idx *idx = &txn->hdr_idx;
10872 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10873 const struct http_msg *msg;
10874 const char *hdr_name;
10875 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10876 int cnt;
10877 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10878 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10879
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10880 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10881 return 0;
10882
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10883 CHECK_HTTP_MESSAGE_FIRST();
10884
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10885 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10886 msg = &txn->req;
10887 hdr_name = "Cookie";
10888 hdr_name_len = 6;
10889 } else {
10890 msg = &txn->rsp;
10891 hdr_name = "Set-Cookie";
10892 hdr_name_len = 10;
10893 }
10894
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10895 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]10896 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10897 ctx.idx = 0;
10898 cnt = 0;
10899
10900 while (1) {
10901 /* Note: val_beg == NULL every time we need to fetch a new header */
10902 if (!val_beg) {
10903 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
10904 break;
10905
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10906 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10907 continue;
10908
10909 val_beg = ctx.line + ctx.val;
10910 val_end = val_beg + ctx.vlen;
10911 }
10912
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10913 smp->type = SMP_T_STR;
10914 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10915 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10916 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10917 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10918 &smp->data.str.str,
10919 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10920 cnt++;
10921 }
10922 }
10923
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]10924 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10925 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10926 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10927 return 1;
10928}
10929
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10930/* Fetch an cookie's integer value. The integer value is returned. It
10931 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
10932 */
10933static int
10934smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10935 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10936{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10937 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10938
10939 if (ret > 0) {
10940 smp->type = SMP_T_UINT;
10941 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10942 }
10943
10944 return ret;
10945}
10946
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10947/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10948/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10949/************************************************************************/
10950
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10951/*
10952 * Given a path string and its length, find the position of beginning of the
10953 * query string. Returns NULL if no query string is found in the path.
10954 *
10955 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
10956 *
10957 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
10958 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10959static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10960{
10961 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]10962
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10963 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10964 return p ? p + 1 : NULL;
10965}
10966
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10967static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10968{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10969 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10970}
10971
10972/*
10973 * Given a url parameter, find the starting position of the first occurence,
10974 * or NULL if the parameter is not found.
10975 *
10976 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
10977 * the function will return query_string+8.
10978 */
10979static char*
10980find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10981 char* url_param_name, size_t url_param_name_l,
10982 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10983{
10984 char *pos, *last;
10985
10986 pos = query_string;
10987 last = query_string + query_string_l - url_param_name_l - 1;
10988
10989 while (pos <= last) {
10990 if (pos[url_param_name_l] == '=') {
10991 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
10992 return pos;
10993 pos += url_param_name_l + 1;
10994 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10995 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10996 pos++;
10997 pos++;
10998 }
10999 return NULL;
11000}
11001
11002/*
11003 * Given a url parameter name, returns its value and size into *value and
11004 * *value_l respectively, and returns non-zero. If the parameter is not found,
11005 * zero is returned and value/value_l are not touched.
11006 */
11007static int
11008find_url_param_value(char* path, size_t path_l,
11009 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11010 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11011{
11012 char *query_string, *qs_end;
11013 char *arg_start;
11014 char *value_start, *value_end;
11015
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11016 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11017 if (!query_string)
11018 return 0;
11019
11020 qs_end = path + path_l;
11021 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11022 url_param_name, url_param_name_l,
11023 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11024 if (!arg_start)
11025 return 0;
11026
11027 value_start = arg_start + url_param_name_l + 1;
11028 value_end = value_start;
11029
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11030 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11031 value_end++;
11032
11033 *value = value_start;
11034 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]11035 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11036}
11037
11038static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11039smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11040 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11041{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11042 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11043 struct http_txn *txn = l7;
11044 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11045
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11046 if (!args || args[0].type != ARGT_STR ||
11047 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11048 return 0;
11049
11050 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11051
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11052 if (args[1].type)
11053 delim = *args[1].data.str.str;
11054
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11055 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]11056 args->data.str.str, args->data.str.len,
11057 &smp->data.str.str, &smp->data.str.len,
11058 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11059 return 0;
11060
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11061 smp->type = SMP_T_STR;
11062 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11063 return 1;
11064}
11065
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11066/* Return the signed integer value for the specified url parameter (see url_param
11067 * above).
11068 */
11069static int
11070smp_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]11071 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11072{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11073 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11074
11075 if (ret > 0) {
11076 smp->type = SMP_T_UINT;
11077 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11078 }
11079
11080 return ret;
11081}
11082
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11083/* This produces a 32-bit hash of the concatenation of the first occurrence of
11084 * the Host header followed by the path component if it begins with a slash ('/').
11085 * This means that '*' will not be added, resulting in exactly the first Host
11086 * entry. If no Host header is found, then the path is used. The resulting value
11087 * is hashed using the url hash followed by a full avalanche hash and provides a
11088 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11089 * high-traffic sites without having to store whole paths.
11090 * this differs from the base32 functions in that it includes the url parameters
11091 * as well as the path
11092 */
11093static int
11094smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11095 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11096{
11097 struct http_txn *txn = l7;
11098 struct hdr_ctx ctx;
11099 unsigned int hash = 0;
11100 char *ptr, *beg, *end;
11101 int len;
11102
11103 CHECK_HTTP_MESSAGE_FIRST();
11104
11105 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11106 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]11107 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11108 ptr = ctx.line + ctx.val;
11109 len = ctx.vlen;
11110 while (len--)
11111 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11112 }
11113
11114 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11115 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]11116 beg = http_get_path(txn);
11117 if (!beg)
11118 beg = end;
11119
11120 for (ptr = beg; ptr < end ; ptr++);
11121
11122 if (beg < ptr && *beg == '/') {
11123 while (beg < ptr)
11124 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11125 }
11126 hash = full_hash(hash);
11127
11128 smp->type = SMP_T_UINT;
11129 smp->data.uint = hash;
11130 smp->flags = SMP_F_VOL_1ST;
11131 return 1;
11132}
11133
11134/* This concatenates the source address with the 32-bit hash of the Host and
11135 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11136 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11137 * on the source address length. The URL hash is stored before the address so
11138 * that in environments where IPv6 is insignificant, truncating the output to
11139 * 8 bytes would still work.
11140 */
11141static int
11142smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11143 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11144{
11145 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11146 struct connection *cli_conn = objt_conn(l4->si[0].end);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11147
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11148 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11149 return 0;
11150
11151 temp = get_trash_chunk();
11152 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
11153 temp->len += sizeof(smp->data.uint);
11154
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11155 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11156 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11157 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]11158 temp->len += 4;
11159 break;
11160 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11161 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]11162 temp->len += 16;
11163 break;
11164 default:
11165 return 0;
11166 }
11167
11168 smp->data.str = *temp;
11169 smp->type = SMP_T_BIN;
11170 return 1;
11171}
11172
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11173/* This function is used to validate the arguments passed to any "hdr" fetch
11174 * keyword. These keywords support an optional positive or negative occurrence
11175 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11176 * is assumed that the types are already the correct ones. Returns 0 on error,
11177 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11178 * error message in case of error, that the caller is responsible for freeing.
11179 * The initial location must either be freeable or NULL.
11180 */
11181static int val_hdr(struct arg *arg, char **err_msg)
11182{
11183 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11184 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11185 return 0;
11186 }
11187 return 1;
11188}
11189
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11190/* takes an UINT value on input supposed to represent the time since EPOCH,
11191 * adds an optional offset found in args[0] and emits a string representing
11192 * the date in RFC-1123/5322 format.
11193 */
11194static int sample_conv_http_date(const struct arg *args, struct sample *smp)
11195{
11196 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
11197 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11198 struct chunk *temp;
11199 struct tm *tm;
11200 time_t curr_date = smp->data.uint;
11201
11202 /* add offset */
11203 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
11204 curr_date += args[0].data.sint;
11205
11206 tm = gmtime(&curr_date);
11207
11208 temp = get_trash_chunk();
11209 temp->len = snprintf(temp->str, temp->size - temp->len,
11210 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11211 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11212 tm->tm_hour, tm->tm_min, tm->tm_sec);
11213
11214 smp->data.str = *temp;
11215 smp->type = SMP_T_STR;
11216 return 1;
11217}
11218
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11219/* Match language range with language tag. RFC2616 14.4:
11220 *
11221 * A language-range matches a language-tag if it exactly equals
11222 * the tag, or if it exactly equals a prefix of the tag such
11223 * that the first tag character following the prefix is "-".
11224 *
11225 * Return 1 if the strings match, else return 0.
11226 */
11227static inline int language_range_match(const char *range, int range_len,
11228 const char *tag, int tag_len)
11229{
11230 const char *end = range + range_len;
11231 const char *tend = tag + tag_len;
11232 while (range < end) {
11233 if (*range == '-' && tag == tend)
11234 return 1;
11235 if (*range != *tag || tag == tend)
11236 return 0;
11237 range++;
11238 tag++;
11239 }
11240 /* Return true only if the last char of the tag is matched. */
11241 return tag == tend;
11242}
11243
11244/* Arguments: The list of expected value, the number of parts returned and the separator */
11245static int sample_conv_q_prefered(const struct arg *args, struct sample *smp)
11246{
11247 const char *al = smp->data.str.str;
11248 const char *end = al + smp->data.str.len;
11249 const char *token;
11250 int toklen;
11251 int qvalue;
11252 const char *str;
11253 const char *w;
11254 int best_q = 0;
11255
11256 /* Set the constant to the sample, because the output of the
11257 * function will be peek in the constant configuration string.
11258 */
11259 smp->flags |= SMP_F_CONST;
11260 smp->data.str.size = 0;
11261 smp->data.str.str = "";
11262 smp->data.str.len = 0;
11263
11264 /* Parse the accept language */
11265 while (1) {
11266
11267 /* Jump spaces, quit if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11268 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11269 al++;
11270 if (al >= end)
11271 break;
11272
11273 /* Start of the fisrt word. */
11274 token = al;
11275
11276 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11277 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11278 al++;
11279 if (al == token)
11280 goto expect_comma;
11281
11282 /* Length of the token. */
11283 toklen = al - token;
11284 qvalue = 1000;
11285
11286 /* Check if the token exists in the list. If the token not exists,
11287 * jump to the next token.
11288 */
11289 str = args[0].data.str.str;
11290 w = str;
11291 while (1) {
11292 if (*str == ';' || *str == '\0') {
11293 if (language_range_match(token, toklen, w, str-w))
11294 goto look_for_q;
11295 if (*str == '\0')
11296 goto expect_comma;
11297 w = str + 1;
11298 }
11299 str++;
11300 }
11301 goto expect_comma;
11302
11303look_for_q:
11304
11305 /* Jump spaces, quit if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11306 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11307 al++;
11308 if (al >= end)
11309 goto process_value;
11310
11311 /* If ',' is found, process the result */
11312 if (*al == ',')
11313 goto process_value;
11314
11315 /* If the character is different from ';', look
11316 * for the end of the header part in best effort.
11317 */
11318 if (*al != ';')
11319 goto expect_comma;
11320
11321 /* Assumes that the char is ';', now expect "q=". */
11322 al++;
11323
11324 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11325 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11326 al++;
11327 if (al >= end)
11328 goto process_value;
11329
11330 /* Expect 'q'. If no 'q', continue in best effort */
11331 if (*al != 'q')
11332 goto process_value;
11333 al++;
11334
11335 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11336 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11337 al++;
11338 if (al >= end)
11339 goto process_value;
11340
11341 /* Expect '='. If no '=', continue in best effort */
11342 if (*al != '=')
11343 goto process_value;
11344 al++;
11345
11346 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11347 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11348 al++;
11349 if (al >= end)
11350 goto process_value;
11351
11352 /* Parse the q value. */
11353 qvalue = parse_qvalue(al, &al);
11354
11355process_value:
11356
11357 /* If the new q value is the best q value, then store the associated
11358 * language in the response. If qvalue is the biggest value (1000),
11359 * break the process.
11360 */
11361 if (qvalue > best_q) {
11362 smp->data.str.str = (char *)w;
11363 smp->data.str.len = str - w;
11364 if (qvalue >= 1000)
11365 break;
11366 best_q = qvalue;
11367 }
11368
11369expect_comma:
11370
11371 /* Expect comma or end. If the end is detected, quit the loop. */
11372 while (al < end && *al != ',')
11373 al++;
11374 if (al >= end)
11375 break;
11376
11377 /* Comma is found, jump it and restart the analyzer. */
11378 al++;
11379 }
11380
11381 /* Set default value if required. */
11382 if (smp->data.str.len == 0 && args[1].type == ARGT_STR) {
11383 smp->data.str.str = args[1].data.str.str;
11384 smp->data.str.len = args[1].data.str.len;
11385 }
11386
11387 /* Return true only if a matching language was found. */
11388 return smp->data.str.len != 0;
11389}
11390
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]11391/*
11392 * Return the struct http_req_action_kw associated to a keyword.
11393 */
11394struct http_req_action_kw *action_http_req_custom(const char *kw)
11395{
11396 if (!LIST_ISEMPTY(&http_req_keywords.list)) {
11397 struct http_req_action_kw_list *kw_list;
11398 int i;
11399
11400 list_for_each_entry(kw_list, &http_req_keywords.list, list) {
11401 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
11402 if (!strcmp(kw, kw_list->kw[i].kw))
11403 return &kw_list->kw[i];
11404 }
11405 }
11406 }
11407 return NULL;
11408}
11409
11410/*
11411 * Return the struct http_res_action_kw associated to a keyword.
11412 */
11413struct http_res_action_kw *action_http_res_custom(const char *kw)
11414{
11415 if (!LIST_ISEMPTY(&http_res_keywords.list)) {
11416 struct http_res_action_kw_list *kw_list;
11417 int i;
11418
11419 list_for_each_entry(kw_list, &http_res_keywords.list, list) {
11420 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
11421 if (!strcmp(kw, kw_list->kw[i].kw))
11422 return &kw_list->kw[i];
11423 }
11424 }
11425 }
11426 return NULL;
11427}
11428
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11429/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11430/* All supported ACL keywords must be declared here. */
11431/************************************************************************/
11432
11433/* Note: must not be declared <const> as its list will be overwritten.
11434 * Please take care of keeping this list alphabetically sorted.
11435 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]11436static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11437 { "base", "base", PAT_MATCH_STR },
11438 { "base_beg", "base", PAT_MATCH_BEG },
11439 { "base_dir", "base", PAT_MATCH_DIR },
11440 { "base_dom", "base", PAT_MATCH_DOM },
11441 { "base_end", "base", PAT_MATCH_END },
11442 { "base_len", "base", PAT_MATCH_LEN },
11443 { "base_reg", "base", PAT_MATCH_REG },
11444 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11445
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11446 { "cook", "req.cook", PAT_MATCH_STR },
11447 { "cook_beg", "req.cook", PAT_MATCH_BEG },
11448 { "cook_dir", "req.cook", PAT_MATCH_DIR },
11449 { "cook_dom", "req.cook", PAT_MATCH_DOM },
11450 { "cook_end", "req.cook", PAT_MATCH_END },
11451 { "cook_len", "req.cook", PAT_MATCH_LEN },
11452 { "cook_reg", "req.cook", PAT_MATCH_REG },
11453 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11454
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11455 { "hdr", "req.hdr", PAT_MATCH_STR },
11456 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
11457 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
11458 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
11459 { "hdr_end", "req.hdr", PAT_MATCH_END },
11460 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
11461 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
11462 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11463
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11464 /* these two declarations uses strings with list storage (in place
11465 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
11466 * and delete functions are relative to the list management. The parse
11467 * and match method are related to the corresponding fetch methods. This
11468 * is very particular ACL declaration mode.
11469 */
11470 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
11471 { "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]11472
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11473 { "path", "path", PAT_MATCH_STR },
11474 { "path_beg", "path", PAT_MATCH_BEG },
11475 { "path_dir", "path", PAT_MATCH_DIR },
11476 { "path_dom", "path", PAT_MATCH_DOM },
11477 { "path_end", "path", PAT_MATCH_END },
11478 { "path_len", "path", PAT_MATCH_LEN },
11479 { "path_reg", "path", PAT_MATCH_REG },
11480 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11481
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11482 { "req_ver", "req.ver", PAT_MATCH_STR },
11483 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11484
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11485 { "scook", "res.cook", PAT_MATCH_STR },
11486 { "scook_beg", "res.cook", PAT_MATCH_BEG },
11487 { "scook_dir", "res.cook", PAT_MATCH_DIR },
11488 { "scook_dom", "res.cook", PAT_MATCH_DOM },
11489 { "scook_end", "res.cook", PAT_MATCH_END },
11490 { "scook_len", "res.cook", PAT_MATCH_LEN },
11491 { "scook_reg", "res.cook", PAT_MATCH_REG },
11492 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11493
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11494 { "shdr", "res.hdr", PAT_MATCH_STR },
11495 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
11496 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
11497 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
11498 { "shdr_end", "res.hdr", PAT_MATCH_END },
11499 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
11500 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
11501 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11502
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11503 { "url", "url", PAT_MATCH_STR },
11504 { "url_beg", "url", PAT_MATCH_BEG },
11505 { "url_dir", "url", PAT_MATCH_DIR },
11506 { "url_dom", "url", PAT_MATCH_DOM },
11507 { "url_end", "url", PAT_MATCH_END },
11508 { "url_len", "url", PAT_MATCH_LEN },
11509 { "url_reg", "url", PAT_MATCH_REG },
11510 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11511
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11512 { "urlp", "urlp", PAT_MATCH_STR },
11513 { "urlp_beg", "urlp", PAT_MATCH_BEG },
11514 { "urlp_dir", "urlp", PAT_MATCH_DIR },
11515 { "urlp_dom", "urlp", PAT_MATCH_DOM },
11516 { "urlp_end", "urlp", PAT_MATCH_END },
11517 { "urlp_len", "urlp", PAT_MATCH_LEN },
11518 { "urlp_reg", "urlp", PAT_MATCH_REG },
11519 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11520
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]11521 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11522}};
11523
11524/************************************************************************/
11525/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11526/************************************************************************/
11527/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]11528static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11529 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11530 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
11531 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
11532
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11533 /* capture are allocated and are permanent in the session */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11534 { "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]11535
11536 /* retrieve these captures from the HTTP logs */
11537 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11538 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11539 { "capture.req.ver", smp_fetch_capture_req_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11540
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11541 { "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]11542 { "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]11543
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11544 /* cookie is valid in both directions (eg: for "stick ...") but cook*
11545 * are only here to match the ACL's name, are request-only and are used
11546 * for ACL compatibility only.
11547 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11548 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
11549 { "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]11550 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11551 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11552
11553 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
11554 * only here to match the ACL's name, are request-only and are used for
11555 * ACL compatibility only.
11556 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11557 { "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]11558 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11559 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
11560 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
11561
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]11562 { "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]11563 { "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]11564 { "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]11565 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11566 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11567
11568 /* HTTP protocol on the request path */
11569 { "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]11570 { "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]11571
11572 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11573 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
11574 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11575
11576 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11577 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
11578 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11579
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11580 /* 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]11581 { "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]11582 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11583 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11584
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11585 { "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]11586 { "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]11587 { "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]11588 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11589 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
11590 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
11591
11592 /* 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]11593 { "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]11594 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11595 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11596
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11597 { "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]11598 { "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]11599 { "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]11600 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11601 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
11602 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
11603
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11604 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11605 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11606 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11607 { "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]11608 { "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]11609
11610 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11611 { "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]11612 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11613 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
11614 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
11615
11616 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11617 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11618 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
11619 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11620 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
11621 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11622 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
11623 { "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]11624 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11625 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11626}};
11627
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11628
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11629/* Note: must not be declared <const> as its list will be overwritten */
11630static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11631 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR},
11632 { "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]11633 { NULL, NULL, 0, 0, 0 },
11634}};
11635
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11636__attribute__((constructor))
11637static void __http_protocol_init(void)
11638{
11639 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11640 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11641 sample_register_convs(&sample_conv_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11642}
11643
11644
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]11645/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]11646 * Local variables:
11647 * c-indent-level: 8
11648 * c-basic-offset: 8
11649 * End:
11650 */