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git01.mediatek.com / haproxy / 8d914d1c9c069fada5f34b0c5e27afa4ba6b9920 / . / src / proto_http.c
blob: 52319a907103fd5b263285dc0181aaedc8cb837e [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"
127 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
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 */
734 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
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
2146 if (!isdigit(*qvalue))
2147 goto out;
2148 q = (*qvalue++ - '0') * 1000;
2149
2150 if (*qvalue++ != '.')
2151 goto out;
2152
2153 if (!isdigit(*qvalue))
2154 goto out;
2155 q += (*qvalue++ - '0') * 100;
2156
2157 if (!isdigit(*qvalue))
2158 goto out;
2159 q += (*qvalue++ - '0') * 10;
2160
2161 if (!isdigit(*qvalue))
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
2396
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2397/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2398 * processing can continue on next analysers, or zero if it either needs more
2399 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2400 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2401 * when it has nothing left to do, and may remove any analyser when it wants to
2402 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2403 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2404int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2405{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2406 /*
2407 * We will parse the partial (or complete) lines.
2408 * We will check the request syntax, and also join multi-line
2409 * headers. An index of all the lines will be elaborated while
2410 * parsing.
2411 *
2412 * For the parsing, we use a 28 states FSM.
2413 *
2414 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2415 * req->buf->p = beginning of request
2416 * req->buf->p + msg->eoh = end of processed headers / start of current one
2417 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2418 * msg->eol = end of current header or line (LF or CRLF)
2419 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2420 *
2421 * 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]2422 * we will set a few fields (txn->meth, sn->flags/SN_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2423 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2424 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2425 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2426
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2427 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2428 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2429 struct http_txn *txn = &s->txn;
2430 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2431 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2432
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2433 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]2434 now_ms, __FUNCTION__,
2435 s,
2436 req,
2437 req->rex, req->wex,
2438 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2439 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2440 req->analysers);
2441
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2442 /* we're speaking HTTP here, so let's speak HTTP to the client */
2443 s->srv_error = http_return_srv_error;
2444
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2445 /* There's a protected area at the end of the buffer for rewriting
2446 * purposes. We don't want to start to parse the request if the
2447 * protected area is affected, because we may have to move processed
2448 * data later, which is much more complicated.
2449 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2450 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2451 if (txn->flags & TX_NOT_FIRST) {
2452 if (unlikely(!channel_reserved(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2453 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2454 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2455 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2456 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2457 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2458 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2459 return 0;
2460 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2461 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2462 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2463 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2464 }
2465
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2466 /* Note that we have the same problem with the response ; we
2467 * may want to send a redirect, error or anything which requires
2468 * some spare space. So we'll ensure that we have at least
2469 * maxrewrite bytes available in the response buffer before
2470 * processing that one. This will only affect pipelined
2471 * keep-alive requests.
2472 */
2473 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2474 unlikely(!channel_reserved(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2475 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2476 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2477 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2478 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]2479 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2480 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2481 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2482 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2483 s->rep->flags |= CF_WAKE_WRITE;
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2484 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2485 return 0;
2486 }
2487 }
2488
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2489 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2490 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2491 }
2492
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2493 /* 1: we might have to print this header in debug mode */
2494 if (unlikely((global.mode & MODE_DEBUG) &&
2495 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2496 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2497 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2498
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2499 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2500 /* this is a bit complex : in case of error on the request line,
2501 * we know that rq.l is still zero, so we display only the part
2502 * up to the end of the line (truncated by debug_hdr).
2503 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2504 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2505 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2506
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2507 sol += hdr_idx_first_pos(&txn->hdr_idx);
2508 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2509
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2510 while (cur_idx) {
2511 eol = sol + txn->hdr_idx.v[cur_idx].len;
2512 debug_hdr("clihdr", s, sol, eol);
2513 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2514 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2515 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2516 }
2517
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2518
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2519 /*
2520 * Now we quickly check if we have found a full valid request.
2521 * If not so, we check the FD and buffer states before leaving.
2522 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2523 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2524 * requests are checked first. When waiting for a second request
2525 * on a keep-alive session, if we encounter and error, close, t/o,
2526 * we note the error in the session flags but don't set any state.
2527 * Since the error will be noted there, it will not be counted by
2528 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2529 * Last, we may increase some tracked counters' http request errors on
2530 * the cases that are deliberately the client's fault. For instance,
2531 * a timeout or connection reset is not counted as an error. However
2532 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2533 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2534
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2535 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2536 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2537 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2538 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2539 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2540 session_inc_http_req_ctr(s);
2541 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2542 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2543 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2544 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2545
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2546 /* 1: Since we are in header mode, if there's no space
2547 * left for headers, we won't be able to free more
2548 * later, so the session will never terminate. We
2549 * must terminate it now.
2550 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2551 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2552 /* FIXME: check if URI is set and return Status
2553 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2554 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2555 session_inc_http_req_ctr(s);
2556 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2557 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2558 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2559 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2560 goto return_bad_req;
2561 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2562
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2563 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2564 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2565 if (!(s->flags & SN_ERR_MASK))
2566 s->flags |= SN_ERR_CLICL;
2567
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2568 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2569 goto failed_keep_alive;
2570
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2571 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2572 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2573 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]2574 session_inc_http_err_ctr(s);
2575 }
2576
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2577 txn->status = 400;
2578 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2579 msg->msg_state = HTTP_MSG_ERROR;
2580 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2581
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2582 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2583 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2584 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2585 if (s->listener->counters)
2586 s->listener->counters->failed_req++;
2587
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2588 if (!(s->flags & SN_FINST_MASK))
2589 s->flags |= SN_FINST_R;
2590 return 0;
2591 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2592
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2593 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2594 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]2595 if (!(s->flags & SN_ERR_MASK))
2596 s->flags |= SN_ERR_CLITO;
2597
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2598 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2599 goto failed_keep_alive;
2600
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2601 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2602 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2603 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]2604 session_inc_http_err_ctr(s);
2605 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2606 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2607 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2608 msg->msg_state = HTTP_MSG_ERROR;
2609 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2610
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2611 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2612 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2613 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2614 if (s->listener->counters)
2615 s->listener->counters->failed_req++;
2616
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2617 if (!(s->flags & SN_FINST_MASK))
2618 s->flags |= SN_FINST_R;
2619 return 0;
2620 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2621
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2622 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2623 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2624 if (!(s->flags & SN_ERR_MASK))
2625 s->flags |= SN_ERR_CLICL;
2626
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2627 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2628 goto failed_keep_alive;
2629
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2630 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2631 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]2632 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2633 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2634 msg->msg_state = HTTP_MSG_ERROR;
2635 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2636
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2637 session_inc_http_err_ctr(s);
2638 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2639 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2640 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2641 if (s->listener->counters)
2642 s->listener->counters->failed_req++;
2643
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2644 if (!(s->flags & SN_FINST_MASK))
2645 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2646 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2647 }
2648
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2649 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2650 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2651 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2652#ifdef TCP_QUICKACK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]2653 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]2654 /* We need more data, we have to re-enable quick-ack in case we
2655 * previously disabled it, otherwise we might cause the client
2656 * to delay next data.
2657 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2658 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]2659 }
2660#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2661
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2662 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2663 /* If the client starts to talk, let's fall back to
2664 * request timeout processing.
2665 */
2666 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2667 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2668 }
2669
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2670 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2671 if (!tick_isset(req->analyse_exp)) {
2672 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2673 (txn->flags & TX_WAIT_NEXT_RQ) &&
2674 tick_isset(s->be->timeout.httpka))
2675 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2676 else
2677 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2678 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2679
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2680 /* we're not ready yet */
2681 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2682
2683 failed_keep_alive:
2684 /* Here we process low-level errors for keep-alive requests. In
2685 * short, if the request is not the first one and it experiences
2686 * a timeout, read error or shutdown, we just silently close so
2687 * that the client can try again.
2688 */
2689 txn->status = 0;
2690 msg->msg_state = HTTP_MSG_RQBEFORE;
2691 req->analysers = 0;
2692 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2693 s->logs.level = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2694 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2695 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2696 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2697 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2698
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2699 /* OK now we have a complete HTTP request with indexed headers. Let's
2700 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2701 * 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]2702 * 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]2703 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2704 * byte after the last LF. msg->sov points to the first byte of data.
2705 * msg->eol cannot be trusted because it may have been left uninitialized
2706 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2707 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2708
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2709 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2710 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2711
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2712 if (txn->flags & TX_WAIT_NEXT_RQ) {
2713 /* kill the pending keep-alive timeout */
2714 txn->flags &= ~TX_WAIT_NEXT_RQ;
2715 req->analyse_exp = TICK_ETERNITY;
2716 }
2717
2718
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2719 /* Maybe we found in invalid header name while we were configured not
2720 * to block on that, so we have to capture it now.
2721 */
2722 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2723 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]2724
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2725 /*
2726 * 1: identify the method
2727 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2728 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2729
2730 /* we can make use of server redirect on GET and HEAD */
2731 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2732 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2733
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2734 /*
2735 * 2: check if the URI matches the monitor_uri.
2736 * We have to do this for every request which gets in, because
2737 * the monitor-uri is defined by the frontend.
2738 */
2739 if (unlikely((s->fe->monitor_uri_len != 0) &&
2740 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2741 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2742 s->fe->monitor_uri,
2743 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2744 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2745 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2746 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2747 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2748
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2749 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2750 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2751
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2752 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2753 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2754 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]2755
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2756 ret = acl_pass(ret);
2757 if (cond->pol == ACL_COND_UNLESS)
2758 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2759
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2760 if (ret) {
2761 /* we fail this request, let's return 503 service unavail */
2762 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2763 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2764 if (!(s->flags & SN_ERR_MASK))
2765 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2766 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2767 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2768 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2769
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2770 /* nothing to fail, let's reply normaly */
2771 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2772 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2773 if (!(s->flags & SN_ERR_MASK))
2774 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2775 goto return_prx_cond;
2776 }
2777
2778 /*
2779 * 3: Maybe we have to copy the original REQURI for the logs ?
2780 * Note: we cannot log anymore if the request has been
2781 * classified as invalid.
2782 */
2783 if (unlikely(s->logs.logwait & LW_REQ)) {
2784 /* we have a complete HTTP request that we must log */
2785 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2786 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2787
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2788 if (urilen >= REQURI_LEN)
2789 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2790 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2791 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2792
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2793 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2794 s->do_log(s);
2795 } else {
2796 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2797 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2798 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2799
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2800 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2801 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2802 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2803
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2804 /* ... and check if the request is HTTP/1.1 or above */
2805 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2806 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2807 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2808 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2809 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2810
2811 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2812 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]2813
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2814 /* if the frontend has "option http-use-proxy-header", we'll check if
2815 * we have what looks like a proxied connection instead of a connection,
2816 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2817 * Note that this is *not* RFC-compliant, however browsers and proxies
2818 * happen to do that despite being non-standard :-(
2819 * We consider that a request not beginning with either '/' or '*' is
2820 * a proxied connection, which covers both "scheme://location" and
2821 * CONNECT ip:port.
2822 */
2823 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2824 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2825 txn->flags |= TX_USE_PX_CONN;
2826
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2827 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2828 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2829
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2830 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2831 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2832 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2833 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2834
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2835 /* 6: determine the transfer-length.
2836 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2837 * the presence of a message-body in a REQUEST and its transfer length
2838 * must be determined that way (in order of precedence) :
2839 * 1. The presence of a message-body in a request is signaled by the
2840 * inclusion of a Content-Length or Transfer-Encoding header field
2841 * in the request's header fields. When a request message contains
2842 * both a message-body of non-zero length and a method that does
2843 * not define any semantics for that request message-body, then an
2844 * origin server SHOULD either ignore the message-body or respond
2845 * with an appropriate error message (e.g., 413). A proxy or
2846 * gateway, when presented the same request, SHOULD either forward
2847 * the request inbound with the message- body or ignore the
2848 * message-body when determining a response.
2849 *
2850 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2851 * and the "chunked" transfer-coding (Section 6.2) is used, the
2852 * transfer-length is defined by the use of this transfer-coding.
2853 * If a Transfer-Encoding header field is present and the "chunked"
2854 * transfer-coding is not present, the transfer-length is defined
2855 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2856 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2857 * 3. If a Content-Length header field is present, its decimal value in
2858 * OCTETs represents both the entity-length and the transfer-length.
2859 * If a message is received with both a Transfer-Encoding header
2860 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2861 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2862 * 4. By the server closing the connection. (Closing the connection
2863 * cannot be used to indicate the end of a request body, since that
2864 * would leave no possibility for the server to send back a response.)
2865 *
2866 * Whenever a transfer-coding is applied to a message-body, the set of
2867 * transfer-codings MUST include "chunked", unless the message indicates
2868 * it is terminated by closing the connection. When the "chunked"
2869 * transfer-coding is used, it MUST be the last transfer-coding applied
2870 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2871 */
2872
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2873 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2874 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2875 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2876 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2877 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2878 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2879 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2880 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2881 /* bad transfer-encoding (chunked followed by something else) */
2882 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2883 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2884 break;
2885 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2886 }
2887
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2888 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2889 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2890 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2891 signed long long cl;
2892
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2893 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2894 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2895 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2896 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2897
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2898 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2899 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2900 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2901 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2902
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2903 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2904 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2905 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2906 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2907
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2908 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2909 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2910 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2911 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2912
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2913 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2914 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2915 }
2916
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2917 /* bodyless requests have a known length */
2918 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2919 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2920
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]2921 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
2922 * only change if both the request and the config reference something else.
2923 * Option httpclose by itself sets tunnel mode where headers are mangled.
2924 * However, if another mode is set, it will affect it (eg: server-close/
2925 * keep-alive + httpclose = close). Note that we avoid to redo the same work
2926 * if FE and BE have the same settings (common). The method consists in
2927 * checking if options changed between the two calls (implying that either
2928 * one is non-null, or one of them is non-null and we are there for the first
2929 * time.
2930 */
2931 if (!(txn->flags & TX_HDR_CONN_PRS) ||
2932 ((s->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE))) {
2933 int tmp = TX_CON_WANT_KAL;
2934
2935 if (!((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
2936 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
2937 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
2938 tmp = TX_CON_WANT_TUN;
2939
2940 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
2941 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2942 tmp = TX_CON_WANT_TUN;
2943 }
2944
2945 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
2946 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
2947 /* option httpclose + server_close => forceclose */
2948 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
2949 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2950 tmp = TX_CON_WANT_CLO;
2951 else
2952 tmp = TX_CON_WANT_SCL;
2953 }
2954
2955 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
2956 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
2957 tmp = TX_CON_WANT_CLO;
2958
2959 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2960 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2961
2962 if (!(txn->flags & TX_HDR_CONN_PRS) &&
2963 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
2964 /* parse the Connection header and possibly clean it */
2965 int to_del = 0;
2966 if ((msg->flags & HTTP_MSGF_VER_11) ||
2967 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
2968 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
2969 to_del |= 2; /* remove "keep-alive" */
2970 if (!(msg->flags & HTTP_MSGF_VER_11))
2971 to_del |= 1; /* remove "close" */
2972 http_parse_connection_header(txn, msg, to_del);
2973 }
2974
2975 /* check if client or config asks for explicit close in KAL/SCL */
2976 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2977 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2978 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
2979 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
2980 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
2981 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
2982 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2983 }
2984
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2985 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2986 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2987 req->analyse_exp = TICK_ETERNITY;
2988 return 1;
2989
2990 return_bad_req:
2991 /* We centralize bad requests processing here */
2992 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2993 /* we detected a parsing error. We want to archive this request
2994 * in the dedicated proxy area for later troubleshooting.
2995 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2996 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]2997 }
2998
2999 txn->req.msg_state = HTTP_MSG_ERROR;
3000 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3001 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3002
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3003 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3004 if (s->listener->counters)
3005 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3006
3007 return_prx_cond:
3008 if (!(s->flags & SN_ERR_MASK))
3009 s->flags |= SN_ERR_PRXCOND;
3010 if (!(s->flags & SN_FINST_MASK))
3011 s->flags |= SN_FINST_R;
3012
3013 req->analysers = 0;
3014 req->analyse_exp = TICK_ETERNITY;
3015 return 0;
3016}
3017
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3018
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3019/* This function prepares an applet to handle the stats. It can deal with the
3020 * "100-continue" expectation, check that admin rules are met for POST requests,
3021 * and program a response message if something was unexpected. It cannot fail
3022 * 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]3023 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3024 * s->target which is supposed to already point to the stats applet. The caller
3025 * is expected to have already assigned an appctx to the session.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3026 */
3027int http_handle_stats(struct session *s, struct channel *req)
3028{
3029 struct stats_admin_rule *stats_admin_rule;
3030 struct stream_interface *si = s->rep->prod;
3031 struct http_txn *txn = &s->txn;
3032 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3033 struct uri_auth *uri_auth = s->be->uri_auth;
3034 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3035 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3036
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3037 appctx = si_appctx(si);
3038 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3039 appctx->st1 = appctx->st2 = 0;
3040 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3041 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3042 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn.meth != HTTP_METH_HEAD))
3043 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3044
3045 uri = msg->chn->buf->p + msg->sl.rq.u;
3046 lookup = uri + uri_auth->uri_len;
3047
3048 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3049 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3050 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3051 break;
3052 }
3053 }
3054
3055 if (uri_auth->refresh) {
3056 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3057 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3058 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3059 break;
3060 }
3061 }
3062 }
3063
3064 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3065 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3066 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3067 break;
3068 }
3069 }
3070
3071 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3072 if (memcmp(h, ";st=", 4) == 0) {
3073 int i;
3074 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3075 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3076 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3077 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3078 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3079 break;
3080 }
3081 }
3082 break;
3083 }
3084 }
3085
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3086 appctx->ctx.stats.scope_str = 0;
3087 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3088 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3089 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3090 int itx = 0;
3091 const char *h2;
3092 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3093 const char *err;
3094
3095 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3096 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3097 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3098 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3099 itx++;
3100 h++;
3101 }
3102
3103 if (itx > STAT_SCOPE_TXT_MAXLEN)
3104 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3105 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3106
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3107 /* 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]3108 memcpy(scope_txt, h2, itx);
3109 scope_txt[itx] = '\0';
3110 err = invalid_char(scope_txt);
3111 if (err) {
3112 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3113 appctx->ctx.stats.scope_str = 0;
3114 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3115 }
3116 break;
3117 }
3118 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3119
3120 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3121 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3122 int ret = 1;
3123
3124 if (stats_admin_rule->cond) {
3125 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
3126 ret = acl_pass(ret);
3127 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3128 ret = !ret;
3129 }
3130
3131 if (ret) {
3132 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3133 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3134 break;
3135 }
3136 }
3137
3138 /* Was the status page requested with a POST ? */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3139 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3140 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3141 /* we'll need the request body, possibly after sending 100-continue */
3142 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3143 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3144 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3145 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3146 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3147 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3148 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3149 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3150 else {
3151 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3152 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3153 }
3154
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3155 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3156 return 1;
3157}
3158
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3159/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3160 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3161 */
3162static inline void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
3163{
3164#ifdef IP_TOS
3165 if (from.ss_family == AF_INET)
3166 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3167#endif
3168#ifdef IPV6_TCLASS
3169 if (from.ss_family == AF_INET6) {
3170 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
3171 /* v4-mapped addresses need IP_TOS */
3172 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3173 else
3174 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3175 }
3176#endif
3177}
3178
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3179/* Returns the number of characters written to destination,
3180 * -1 on internal error and -2 if no replacement took place.
3181 */
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3182static int http_replace_header(struct my_regex *re, char *dst, uint dst_size, char *val, int len,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3183 const char *rep_str)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3184{
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3185 if (!regex_exec_match2(re, val, len, MAX_MATCH, pmatch))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3186 return -2;
3187
3188 return exp_replace(dst, dst_size, val, rep_str, pmatch);
3189}
3190
3191/* Returns the number of characters written to destination,
3192 * -1 on internal error and -2 if no replacement took place.
3193 */
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3194static int http_replace_value(struct my_regex *re, char *dst, uint dst_size, char *val, int len, char delim,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3195 const char *rep_str)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3196{
3197 char* p = val;
3198 char* dst_end = dst + dst_size;
3199 char* dst_p = dst;
3200
3201 for (;;) {
3202 char *p_delim;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3203
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3204 /* look for delim. */
3205 p_delim = p;
3206 while (p_delim < p + len && *p_delim != delim)
3207 p_delim++;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3208
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3209 if (regex_exec_match2(re, p, p_delim-p, MAX_MATCH, pmatch)) {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3210 int replace_n = exp_replace(dst_p, dst_end - dst_p, p, rep_str, pmatch);
3211
3212 if (replace_n < 0)
3213 return -1;
3214
3215 dst_p += replace_n;
3216 } else {
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3217 uint len = p_delim - p;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3218
3219 if (dst_p + len >= dst_end)
3220 return -1;
3221
3222 memcpy(dst_p, p, len);
3223 dst_p += len;
3224 }
3225
3226 if (dst_p >= dst_end)
3227 return -1;
3228
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3229 /* end of the replacements. */
3230 if (p_delim >= p + len)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3231 break;
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3232
3233 /* Next part. */
3234 *dst_p++ = delim;
3235 p = p_delim + 1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3236 }
3237
3238 return dst_p - dst;
3239}
3240
3241static 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]3242 char* buf, struct hdr_idx* idx, struct list *fmt, struct my_regex *re,
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3243 struct hdr_ctx* ctx, int action)
3244{
3245 ctx->idx = 0;
3246
3247 while (http_find_full_header2(name, name_len, buf, idx, ctx)) {
3248 struct hdr_idx_elem *hdr = idx->v + ctx->idx;
3249 int delta;
3250 char* val = (char*)ctx->line + name_len + 2;
3251 char* val_end = (char*)ctx->line + hdr->len;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3252 char* reg_dst_buf;
3253 uint reg_dst_buf_size;
3254 int n_replaced;
3255
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3256 trash.len = build_logline(s, trash.str, trash.size, fmt);
3257
3258 if (trash.len >= trash.size - 1)
3259 return -1;
3260
3261 reg_dst_buf = trash.str + trash.len + 1;
3262 reg_dst_buf_size = trash.size - trash.len - 1;
3263
3264 switch (action) {
3265 case HTTP_REQ_ACT_REPLACE_VAL:
3266 case HTTP_RES_ACT_REPLACE_VAL:
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3267 n_replaced = http_replace_value(re, reg_dst_buf, reg_dst_buf_size, val, val_end-val, ',', trash.str);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3268 break;
3269 case HTTP_REQ_ACT_REPLACE_HDR:
3270 case HTTP_RES_ACT_REPLACE_HDR:
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3271 n_replaced = http_replace_header(re, reg_dst_buf, reg_dst_buf_size, val, val_end-val, trash.str);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3272 break;
3273 default: /* impossible */
3274 return -1;
3275 }
3276
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3277 switch (n_replaced) {
3278 case -1: return -1;
3279 case -2: continue;
3280 }
3281
3282 delta = buffer_replace2(msg->chn->buf, val, val_end, reg_dst_buf, n_replaced);
3283
3284 hdr->len += delta;
3285 http_msg_move_end(msg, delta);
3286 }
3287
3288 return 0;
3289}
3290
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3291/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3292 * transaction <txn>. Returns the verdict of the first rule that prevents
3293 * further processing of the request (auth, deny, ...), and defaults to
3294 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3295 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
3296 * on txn->flags if it encounters a tarpit rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3297 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3298enum rule_result
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3299http_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]3300{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3301 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3302 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3303 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3304 const char *auth_realm;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3305
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3306 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3307 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3308 continue;
3309
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3310 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3311 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3312 int ret;
3313
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3314 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]3315 ret = acl_pass(ret);
3316
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3317 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3318 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3319
3320 if (!ret) /* condition not matched */
3321 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3322 }
3323
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3324
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3325 switch (rule->action) {
3326 case HTTP_REQ_ACT_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3327 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3328
3329 case HTTP_REQ_ACT_DENY:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3330 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3331
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3332 case HTTP_REQ_ACT_TARPIT:
3333 txn->flags |= TX_CLTARPIT;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3334 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3335
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3336 case HTTP_REQ_ACT_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3337 /* Auth might be performed on regular http-req rules as well as on stats */
3338 auth_realm = rule->arg.auth.realm;
3339 if (!auth_realm) {
3340 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3341 auth_realm = STATS_DEFAULT_REALM;
3342 else
3343 auth_realm = px->id;
3344 }
3345 /* send 401/407 depending on whether we use a proxy or not. We still
3346 * count one error, because normal browsing won't significantly
3347 * increase the counter but brute force attempts will.
3348 */
3349 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3350 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
3351 stream_int_retnclose(&s->si[0], &trash);
3352 session_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3353 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3354
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3355 case HTTP_REQ_ACT_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3356 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3357 return HTTP_RULE_RES_BADREQ;
3358 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3359
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3360 case HTTP_REQ_ACT_SET_NICE:
3361 s->task->nice = rule->arg.nice;
3362 break;
3363
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3364 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3365 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3366 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]3367 break;
3368
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3369 case HTTP_REQ_ACT_SET_MARK:
3370#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3371 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3372 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]3373#endif
3374 break;
3375
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3376 case HTTP_REQ_ACT_SET_LOGL:
3377 s->logs.level = rule->arg.loglevel;
3378 break;
3379
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3380 case HTTP_REQ_ACT_REPLACE_HDR:
3381 case HTTP_REQ_ACT_REPLACE_VAL:
3382 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3383 txn->req.chn->buf->p, &txn->hdr_idx, &rule->arg.hdr_add.fmt,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3384 &rule->arg.hdr_add.re, &ctx, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3385 return HTTP_RULE_RES_BADREQ;
3386 break;
3387
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3388 case HTTP_REQ_ACT_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3389 case HTTP_REQ_ACT_SET_HDR:
3390 ctx.idx = 0;
3391 /* remove all occurrences of the header */
3392 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3393 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3394 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3395 }
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3396 if (rule->action == HTTP_REQ_ACT_DEL_HDR)
3397 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3398 /* now fall through to header addition */
3399
3400 case HTTP_REQ_ACT_ADD_HDR:
3401 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3402 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3403 trash.len = rule->arg.hdr_add.name_len;
3404 trash.str[trash.len++] = ':';
3405 trash.str[trash.len++] = ' ';
3406 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3407 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3408 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3409
3410 case HTTP_REQ_ACT_DEL_ACL:
3411 case HTTP_REQ_ACT_DEL_MAP: {
3412 struct pat_ref *ref;
3413 char *key;
3414 int len;
3415
3416 /* collect reference */
3417 ref = pat_ref_lookup(rule->arg.map.ref);
3418 if (!ref)
3419 continue;
3420
3421 /* collect key */
3422 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3423 key = trash.str;
3424 key[len] = '\0';
3425
3426 /* perform update */
3427 /* returned code: 1=ok, 0=ko */
3428 pat_ref_delete(ref, key);
3429
3430 break;
3431 }
3432
3433 case HTTP_REQ_ACT_ADD_ACL: {
3434 struct pat_ref *ref;
3435 char *key;
3436 struct chunk *trash_key;
3437 int len;
3438
3439 trash_key = get_trash_chunk();
3440
3441 /* collect reference */
3442 ref = pat_ref_lookup(rule->arg.map.ref);
3443 if (!ref)
3444 continue;
3445
3446 /* collect key */
3447 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3448 key = trash_key->str;
3449 key[len] = '\0';
3450
3451 /* perform update */
3452 /* add entry only if it does not already exist */
3453 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3454 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3455
3456 break;
3457 }
3458
3459 case HTTP_REQ_ACT_SET_MAP: {
3460 struct pat_ref *ref;
3461 char *key, *value;
3462 struct chunk *trash_key, *trash_value;
3463 int len;
3464
3465 trash_key = get_trash_chunk();
3466 trash_value = get_trash_chunk();
3467
3468 /* collect reference */
3469 ref = pat_ref_lookup(rule->arg.map.ref);
3470 if (!ref)
3471 continue;
3472
3473 /* collect key */
3474 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3475 key = trash_key->str;
3476 key[len] = '\0';
3477
3478 /* collect value */
3479 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3480 value = trash_value->str;
3481 value[len] = '\0';
3482
3483 /* perform update */
3484 if (pat_ref_find_elt(ref, key) != NULL)
3485 /* update entry if it exists */
3486 pat_ref_set(ref, key, value, NULL);
3487 else
3488 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3489 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3490
3491 break;
3492 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3493
3494 case HTTP_REQ_ACT_CUSTOM_CONT:
3495 rule->action_ptr(rule, px, s, txn);
3496 break;
3497
3498 case HTTP_REQ_ACT_CUSTOM_STOP:
3499 rule->action_ptr(rule, px, s, txn);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3500 return HTTP_RULE_RES_DONE;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3501 }
3502 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3503
3504 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3505 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3506}
3507
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3508
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3509/* Executes the http-response rules <rules> for session <s>, proxy <px> and
3510 * transaction <txn>. Returns the first rule that prevents further processing
3511 * of the response (deny, ...) or NULL if it executed all rules or stopped
3512 * on an allow. It may set the TX_SVDENY on txn->flags if it encounters a deny
3513 * rule.
3514 */
3515static struct http_res_rule *
3516http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3517{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3518 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3519 struct http_res_rule *rule;
3520 struct hdr_ctx ctx;
3521
3522 list_for_each_entry(rule, rules, list) {
3523 if (rule->action >= HTTP_RES_ACT_MAX)
3524 continue;
3525
3526 /* check optional condition */
3527 if (rule->cond) {
3528 int ret;
3529
3530 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
3531 ret = acl_pass(ret);
3532
3533 if (rule->cond->pol == ACL_COND_UNLESS)
3534 ret = !ret;
3535
3536 if (!ret) /* condition not matched */
3537 continue;
3538 }
3539
3540
3541 switch (rule->action) {
3542 case HTTP_RES_ACT_ALLOW:
3543 return NULL; /* "allow" rules are OK */
3544
3545 case HTTP_RES_ACT_DENY:
3546 txn->flags |= TX_SVDENY;
3547 return rule;
3548
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3549 case HTTP_RES_ACT_SET_NICE:
3550 s->task->nice = rule->arg.nice;
3551 break;
3552
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3553 case HTTP_RES_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3554 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3555 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]3556 break;
3557
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3558 case HTTP_RES_ACT_SET_MARK:
3559#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3560 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3561 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]3562#endif
3563 break;
3564
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3565 case HTTP_RES_ACT_SET_LOGL:
3566 s->logs.level = rule->arg.loglevel;
3567 break;
3568
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3569 case HTTP_RES_ACT_REPLACE_HDR:
3570 case HTTP_RES_ACT_REPLACE_VAL:
3571 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3572 txn->rsp.chn->buf->p, &txn->hdr_idx, &rule->arg.hdr_add.fmt,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3573 &rule->arg.hdr_add.re, &ctx, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3574 return NULL; /* note: we should report an error here */
3575 break;
3576
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3577 case HTTP_RES_ACT_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3578 case HTTP_RES_ACT_SET_HDR:
3579 ctx.idx = 0;
3580 /* remove all occurrences of the header */
3581 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3582 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3583 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3584 }
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3585 if (rule->action == HTTP_RES_ACT_DEL_HDR)
3586 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3587 /* now fall through to header addition */
3588
3589 case HTTP_RES_ACT_ADD_HDR:
3590 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3591 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3592 trash.len = rule->arg.hdr_add.name_len;
3593 trash.str[trash.len++] = ':';
3594 trash.str[trash.len++] = ' ';
3595 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3596 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3597 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3598
3599 case HTTP_RES_ACT_DEL_ACL:
3600 case HTTP_RES_ACT_DEL_MAP: {
3601 struct pat_ref *ref;
3602 char *key;
3603 int len;
3604
3605 /* collect reference */
3606 ref = pat_ref_lookup(rule->arg.map.ref);
3607 if (!ref)
3608 continue;
3609
3610 /* collect key */
3611 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3612 key = trash.str;
3613 key[len] = '\0';
3614
3615 /* perform update */
3616 /* returned code: 1=ok, 0=ko */
3617 pat_ref_delete(ref, key);
3618
3619 break;
3620 }
3621
3622 case HTTP_RES_ACT_ADD_ACL: {
3623 struct pat_ref *ref;
3624 char *key;
3625 struct chunk *trash_key;
3626 int len;
3627
3628 trash_key = get_trash_chunk();
3629
3630 /* collect reference */
3631 ref = pat_ref_lookup(rule->arg.map.ref);
3632 if (!ref)
3633 continue;
3634
3635 /* collect key */
3636 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3637 key = trash_key->str;
3638 key[len] = '\0';
3639
3640 /* perform update */
3641 /* check if the entry already exists */
3642 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3643 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3644
3645 break;
3646 }
3647
3648 case HTTP_RES_ACT_SET_MAP: {
3649 struct pat_ref *ref;
3650 char *key, *value;
3651 struct chunk *trash_key, *trash_value;
3652 int len;
3653
3654 trash_key = get_trash_chunk();
3655 trash_value = get_trash_chunk();
3656
3657 /* collect reference */
3658 ref = pat_ref_lookup(rule->arg.map.ref);
3659 if (!ref)
3660 continue;
3661
3662 /* collect key */
3663 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3664 key = trash_key->str;
3665 key[len] = '\0';
3666
3667 /* collect value */
3668 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3669 value = trash_value->str;
3670 value[len] = '\0';
3671
3672 /* perform update */
3673 if (pat_ref_find_elt(ref, key) != NULL)
3674 /* update entry if it exists */
3675 pat_ref_set(ref, key, value, NULL);
3676 else
3677 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3678 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3679
3680 break;
3681 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3682
3683 case HTTP_RES_ACT_CUSTOM_CONT:
3684 rule->action_ptr(rule, px, s, txn);
3685 break;
3686
3687 case HTTP_RES_ACT_CUSTOM_STOP:
3688 rule->action_ptr(rule, px, s, txn);
3689 return rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3690 }
3691 }
3692
3693 /* we reached the end of the rules, nothing to report */
3694 return NULL;
3695}
3696
3697
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3698/* Perform an HTTP redirect based on the information in <rule>. The function
3699 * returns non-zero on success, or zero in case of a, irrecoverable error such
3700 * as too large a request to build a valid response.
3701 */
3702static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3703{
3704 struct http_msg *msg = &txn->req;
3705 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3706 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3707
3708 /* build redirect message */
3709 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3710 case 308:
3711 msg_fmt = HTTP_308;
3712 break;
3713 case 307:
3714 msg_fmt = HTTP_307;
3715 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3716 case 303:
3717 msg_fmt = HTTP_303;
3718 break;
3719 case 301:
3720 msg_fmt = HTTP_301;
3721 break;
3722 case 302:
3723 default:
3724 msg_fmt = HTTP_302;
3725 break;
3726 }
3727
3728 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3729 return 0;
3730
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3731 location = trash.str + trash.len;
3732
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3733 switch(rule->type) {
3734 case REDIRECT_TYPE_SCHEME: {
3735 const char *path;
3736 const char *host;
3737 struct hdr_ctx ctx;
3738 int pathlen;
3739 int hostlen;
3740
3741 host = "";
3742 hostlen = 0;
3743 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]3744 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]3745 host = ctx.line + ctx.val;
3746 hostlen = ctx.vlen;
3747 }
3748
3749 path = http_get_path(txn);
3750 /* build message using path */
3751 if (path) {
3752 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3753 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3754 int qs = 0;
3755 while (qs < pathlen) {
3756 if (path[qs] == '?') {
3757 pathlen = qs;
3758 break;
3759 }
3760 qs++;
3761 }
3762 }
3763 } else {
3764 path = "/";
3765 pathlen = 1;
3766 }
3767
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3768 if (rule->rdr_str) { /* this is an old "redirect" rule */
3769 /* check if we can add scheme + "://" + host + path */
3770 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3771 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3772
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3773 /* add scheme */
3774 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3775 trash.len += rule->rdr_len;
3776 }
3777 else {
3778 /* add scheme with executing log format */
3779 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]3780
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3781 /* check if we can add scheme + "://" + host + path */
3782 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3783 return 0;
3784 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3785 /* add "://" */
3786 memcpy(trash.str + trash.len, "://", 3);
3787 trash.len += 3;
3788
3789 /* add host */
3790 memcpy(trash.str + trash.len, host, hostlen);
3791 trash.len += hostlen;
3792
3793 /* add path */
3794 memcpy(trash.str + trash.len, path, pathlen);
3795 trash.len += pathlen;
3796
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3797 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3798 if (trash.len && trash.str[trash.len - 1] != '/' &&
3799 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3800 if (trash.len > trash.size - 5)
3801 return 0;
3802 trash.str[trash.len] = '/';
3803 trash.len++;
3804 }
3805
3806 break;
3807 }
3808 case REDIRECT_TYPE_PREFIX: {
3809 const char *path;
3810 int pathlen;
3811
3812 path = http_get_path(txn);
3813 /* build message using path */
3814 if (path) {
3815 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3816 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3817 int qs = 0;
3818 while (qs < pathlen) {
3819 if (path[qs] == '?') {
3820 pathlen = qs;
3821 break;
3822 }
3823 qs++;
3824 }
3825 }
3826 } else {
3827 path = "/";
3828 pathlen = 1;
3829 }
3830
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3831 if (rule->rdr_str) { /* this is an old "redirect" rule */
3832 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3833 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3834
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3835 /* add prefix. Note that if prefix == "/", we don't want to
3836 * add anything, otherwise it makes it hard for the user to
3837 * configure a self-redirection.
3838 */
3839 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3840 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3841 trash.len += rule->rdr_len;
3842 }
3843 }
3844 else {
3845 /* add prefix with executing log format */
3846 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3847
3848 /* Check length */
3849 if (trash.len + pathlen > trash.size - 4)
3850 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3851 }
3852
3853 /* add path */
3854 memcpy(trash.str + trash.len, path, pathlen);
3855 trash.len += pathlen;
3856
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3857 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3858 if (trash.len && trash.str[trash.len - 1] != '/' &&
3859 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3860 if (trash.len > trash.size - 5)
3861 return 0;
3862 trash.str[trash.len] = '/';
3863 trash.len++;
3864 }
3865
3866 break;
3867 }
3868 case REDIRECT_TYPE_LOCATION:
3869 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3870 if (rule->rdr_str) { /* this is an old "redirect" rule */
3871 if (trash.len + rule->rdr_len > trash.size - 4)
3872 return 0;
3873
3874 /* add location */
3875 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3876 trash.len += rule->rdr_len;
3877 }
3878 else {
3879 /* add location with executing log format */
3880 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]3881
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3882 /* Check left length */
3883 if (trash.len > trash.size - 4)
3884 return 0;
3885 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3886 break;
3887 }
3888
3889 if (rule->cookie_len) {
3890 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3891 trash.len += 14;
3892 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3893 trash.len += rule->cookie_len;
3894 memcpy(trash.str + trash.len, "\r\n", 2);
3895 trash.len += 2;
3896 }
3897
3898 /* add end of headers and the keep-alive/close status.
3899 * We may choose to set keep-alive if the Location begins
3900 * with a slash, because the client will come back to the
3901 * same server.
3902 */
3903 txn->status = rule->code;
3904 /* let's log the request time */
3905 s->logs.tv_request = now;
3906
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3907 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3908 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3909 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3910 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3911 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3912 /* keep-alive possible */
3913 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3914 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3915 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3916 trash.len += 30;
3917 } else {
3918 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3919 trash.len += 24;
3920 }
3921 }
3922 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3923 trash.len += 4;
3924 bo_inject(txn->rsp.chn, trash.str, trash.len);
3925 /* "eat" the request */
3926 bi_fast_delete(txn->req.chn->buf, msg->sov);
Willy Tarreau6d8bac72014-04-25 12:19:32 +0200[diff] [blame]3927 msg->next -= msg->sov;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3928 msg->sov = 0;
3929 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3930 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3931 txn->req.msg_state = HTTP_MSG_CLOSED;
3932 txn->rsp.msg_state = HTTP_MSG_DONE;
3933 } else {
3934 /* keep-alive not possible */
3935 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3936 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3937 trash.len += 29;
3938 } else {
3939 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3940 trash.len += 23;
3941 }
3942 stream_int_retnclose(txn->req.chn->prod, &trash);
3943 txn->req.chn->analysers = 0;
3944 }
3945
3946 if (!(s->flags & SN_ERR_MASK))
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3947 s->flags |= SN_ERR_LOCAL;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3948 if (!(s->flags & SN_FINST_MASK))
3949 s->flags |= SN_FINST_R;
3950
3951 return 1;
3952}
3953
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3954/* This stream analyser runs all HTTP request processing which is common to
3955 * frontends and backends, which means blocking ACLs, filters, connection-close,
3956 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3957 * 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]3958 * either needs more data or wants to immediately abort the request (eg: deny,
3959 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3960 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3961int 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]3962{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3963 struct http_txn *txn = &s->txn;
3964 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3965 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3966 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3967 enum rule_result verdict;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3968
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3969 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3970 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3971 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3972 return 0;
3973 }
3974
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3975 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]3976 now_ms, __FUNCTION__,
3977 s,
3978 req,
3979 req->rex, req->wex,
3980 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3981 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3982 req->analysers);
3983
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]3984 /* just in case we have some per-backend tracking */
3985 session_inc_be_http_req_ctr(s);
3986
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3987 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3988 if (!LIST_ISEMPTY(&px->http_req_rules)) {
3989 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, txn);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]3990
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3991 switch (verdict) {
3992 case HTTP_RULE_RES_CONT:
3993 case HTTP_RULE_RES_STOP: /* nothing to do */
3994 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3995
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3996 case HTTP_RULE_RES_DENY: /* deny or tarpit */
3997 if (txn->flags & TX_CLTARPIT)
3998 goto tarpit;
3999 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4000
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4001 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4002 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4003
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4004 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4005 goto done;
4006
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4007 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4008 goto return_bad_req;
4009 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4010 }
4011
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4012 /* OK at this stage, we know that the request was accepted according to
4013 * the http-request rules, we can check for the stats. Note that the
4014 * URI is detected *before* the req* rules in order not to be affected
4015 * by a possible reqrep, while they are processed *after* so that a
4016 * reqdeny can still block them. This clearly needs to change in 1.6!
4017 */
4018 if (stats_check_uri(s->rep->prod, txn, px)) {
4019 s->target = &http_stats_applet.obj_type;
4020 if (unlikely(!stream_int_register_handler(s->rep->prod, objt_applet(s->target)))) {
4021 txn->status = 500;
4022 s->logs.tv_request = now;
4023 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4024
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4025 if (!(s->flags & SN_ERR_MASK))
4026 s->flags |= SN_ERR_RESOURCE;
4027 goto return_prx_cond;
4028 }
4029
4030 /* parse the whole stats request and extract the relevant information */
4031 http_handle_stats(s, req);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4032 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, txn);
4033 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4034
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4035 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4036 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4037
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4038 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4039 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4040 }
4041
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4042 /* evaluate the req* rules except reqadd */
4043 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4044 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4045 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4046
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4047 if (txn->flags & TX_CLDENY)
4048 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4049
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4050 if (txn->flags & TX_CLTARPIT)
4051 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4052 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4053
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4054 /* add request headers from the rule sets in the same order */
4055 list_for_each_entry(wl, &px->req_add, list) {
4056 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]4057 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]4058 ret = acl_pass(ret);
4059 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4060 ret = !ret;
4061 if (!ret)
4062 continue;
4063 }
4064
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4065 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4066 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4067 }
4068
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4069
4070 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4071 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4072 /* process the stats request now */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4073 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
4074 s->fe->fe_counters.intercepted_req++;
4075
4076 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
4077 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
4078 if (!(s->flags & SN_FINST_MASK))
4079 s->flags |= SN_FINST_R;
4080
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4081 /* we may want to compress the stats page */
4082 if (s->fe->comp || s->be->comp)
4083 select_compression_request_header(s, req->buf);
4084
4085 /* enable the minimally required analyzers to handle keep-alive and compression on the HTTP response */
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]4086 req->analysers = (req->analysers & AN_REQ_HTTP_BODY) |
4087 AN_REQ_HTTP_XFER_BODY | AN_RES_WAIT_HTTP | AN_RES_HTTP_PROCESS_BE | AN_RES_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4088 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4089 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4090
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4091 /* check whether we have some ACLs set to redirect this request */
4092 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4093 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4094 int ret;
4095
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]4096 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]4097 ret = acl_pass(ret);
4098 if (rule->cond->pol == ACL_COND_UNLESS)
4099 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4100 if (!ret)
4101 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4102 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4103 if (!http_apply_redirect_rule(rule, s, txn))
4104 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4105 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4106 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4107
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4108 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4109 * If this happens, then the data will not come immediately, so we must
4110 * send all what we have without waiting. Note that due to the small gain
4111 * 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]4112 * 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]4113 * itself once used.
4114 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4115 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4116
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4117 done: /* done with this analyser, continue with next ones that the calling
4118 * points will have set, if any.
4119 */
4120 req->analysers &= ~an_bit;
4121 req->analyse_exp = TICK_ETERNITY;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4122 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4123
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4124 tarpit:
4125 /* When a connection is tarpitted, we use the tarpit timeout,
4126 * which may be the same as the connect timeout if unspecified.
4127 * If unset, then set it to zero because we really want it to
4128 * eventually expire. We build the tarpit as an analyser.
4129 */
4130 channel_erase(s->req);
4131
4132 /* wipe the request out so that we can drop the connection early
4133 * if the client closes first.
4134 */
4135 channel_dont_connect(req);
4136 req->analysers = 0; /* remove switching rules etc... */
4137 req->analysers |= AN_REQ_HTTP_TARPIT;
4138 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4139 if (!req->analyse_exp)
4140 req->analyse_exp = tick_add(now_ms, 0);
4141 session_inc_http_err_ctr(s);
4142 s->fe->fe_counters.denied_req++;
4143 if (s->fe != s->be)
4144 s->be->be_counters.denied_req++;
4145 if (s->listener->counters)
4146 s->listener->counters->denied_req++;
4147 goto done;
4148
4149 deny: /* this request was blocked (denied) */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4150 txn->flags |= TX_CLDENY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4151 txn->status = 403;
4152 s->logs.tv_request = now;
4153 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
4154 session_inc_http_err_ctr(s);
4155 s->fe->fe_counters.denied_req++;
4156 if (s->fe != s->be)
4157 s->be->be_counters.denied_req++;
4158 if (s->listener->counters)
4159 s->listener->counters->denied_req++;
4160 goto return_prx_cond;
4161
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4162 return_bad_req:
4163 /* We centralize bad requests processing here */
4164 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4165 /* we detected a parsing error. We want to archive this request
4166 * in the dedicated proxy area for later troubleshooting.
4167 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4168 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]4169 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4170
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4171 txn->req.msg_state = HTTP_MSG_ERROR;
4172 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4173 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4174
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4175 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4176 if (s->listener->counters)
4177 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4178
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4179 return_prx_cond:
4180 if (!(s->flags & SN_ERR_MASK))
4181 s->flags |= SN_ERR_PRXCOND;
4182 if (!(s->flags & SN_FINST_MASK))
4183 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4184
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4185 req->analysers = 0;
4186 req->analyse_exp = TICK_ETERNITY;
4187 return 0;
4188}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4189
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4190/* This function performs all the processing enabled for the current request.
4191 * It returns 1 if the processing can continue on next analysers, or zero if it
4192 * needs more data, encounters an error, or wants to immediately abort the
4193 * request. It relies on buffers flags, and updates s->req->analysers.
4194 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4195int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4196{
4197 struct http_txn *txn = &s->txn;
4198 struct http_msg *msg = &txn->req;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4199 struct connection *cli_conn = objt_conn(req->prod->end);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4200
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4201 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4202 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4203 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4204 return 0;
4205 }
4206
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4207 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]4208 now_ms, __FUNCTION__,
4209 s,
4210 req,
4211 req->rex, req->wex,
4212 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4213 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4214 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4215
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]4216 if (s->fe->comp || s->be->comp)
4217 select_compression_request_header(s, req->buf);
4218
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4219 /*
4220 * Right now, we know that we have processed the entire headers
4221 * and that unwanted requests have been filtered out. We can do
4222 * whatever we want with the remaining request. Also, now we
4223 * may have separate values for ->fe, ->be.
4224 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4225
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4226 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4227 * If HTTP PROXY is set we simply get remote server address parsing
4228 * incoming request. Note that this requires that a connection is
4229 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4230 */
4231 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4232 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4233 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4234
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4235 /* Note that for now we don't reuse existing proxy connections */
4236 if (unlikely((conn = si_alloc_conn(req->cons, 0)) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4237 txn->req.msg_state = HTTP_MSG_ERROR;
4238 txn->status = 500;
4239 req->analysers = 0;
4240 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
4241
4242 if (!(s->flags & SN_ERR_MASK))
4243 s->flags |= SN_ERR_RESOURCE;
4244 if (!(s->flags & SN_FINST_MASK))
4245 s->flags |= SN_FINST_R;
4246
4247 return 0;
4248 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4249
4250 path = http_get_path(txn);
4251 url2sa(req->buf->p + msg->sl.rq.u,
4252 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4253 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4254 /* if the path was found, we have to remove everything between
4255 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4256 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4257 * u_l characters by a single "/".
4258 */
4259 if (path) {
4260 char *cur_ptr = req->buf->p;
4261 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4262 int delta;
4263
4264 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4265 http_msg_move_end(&txn->req, delta);
4266 cur_end += delta;
4267 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4268 goto return_bad_req;
4269 }
4270 else {
4271 char *cur_ptr = req->buf->p;
4272 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4273 int delta;
4274
4275 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4276 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4277 http_msg_move_end(&txn->req, delta);
4278 cur_end += delta;
4279 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4280 goto return_bad_req;
4281 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4282 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4283
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4284 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4285 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4286 * Note that doing so might move headers in the request, but
4287 * the fields will stay coherent and the URI will not move.
4288 * This should only be performed in the backend.
4289 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4290 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4291 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
4292 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4293
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4294 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4295 * 8: the appsession cookie was looked up very early in 1.2,
4296 * so let's do the same now.
4297 */
4298
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4299 /* It needs to look into the URI unless persistence must be ignored */
4300 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4301 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]4302 }
4303
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4304 /* add unique-id if "header-unique-id" is specified */
4305
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4306 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
4307 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4308 goto return_bad_req;
4309 s->unique_id[0] = '\0';
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4310 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4311 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4312
4313 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4314 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
4315 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4316 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4317 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]4318 goto return_bad_req;
4319 }
4320
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4321 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4322 * 9: add X-Forwarded-For if either the frontend or the backend
4323 * asks for it.
4324 */
4325 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4326 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4327 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]4328 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
4329 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]4330 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4331 /* The header is set to be added only if none is present
4332 * and we found it, so don't do anything.
4333 */
4334 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4335 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4336 /* Add an X-Forwarded-For header unless the source IP is
4337 * in the 'except' network range.
4338 */
4339 if ((!s->fe->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4340 (((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]4341 != s->fe->except_net.s_addr) &&
4342 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4343 (((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]4344 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4345 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4346 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4347 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4348
4349 /* Note: we rely on the backend to get the header name to be used for
4350 * x-forwarded-for, because the header is really meant for the backends.
4351 * However, if the backend did not specify any option, we have to rely
4352 * on the frontend's header name.
4353 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4354 if (s->be->fwdfor_hdr_len) {
4355 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4356 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4357 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4358 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4359 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4360 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4361 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]4362
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4363 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]4364 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4365 }
4366 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4367 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4368 /* FIXME: for the sake of completeness, we should also support
4369 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4370 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4371 int len;
4372 char pn[INET6_ADDRSTRLEN];
4373 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4374 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4375 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4376
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4377 /* Note: we rely on the backend to get the header name to be used for
4378 * x-forwarded-for, because the header is really meant for the backends.
4379 * However, if the backend did not specify any option, we have to rely
4380 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4381 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4382 if (s->be->fwdfor_hdr_len) {
4383 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4384 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4385 } else {
4386 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4387 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4388 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4389 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4390
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4391 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]4392 goto return_bad_req;
4393 }
4394 }
4395
4396 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4397 * 10: add X-Original-To if either the frontend or the backend
4398 * asks for it.
4399 */
4400 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
4401
4402 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4403 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4404 /* Add an X-Original-To header unless the destination IP is
4405 * in the 'except' network range.
4406 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4407 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4408
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4409 if (cli_conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4410 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4411 (((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]4412 != s->fe->except_to.s_addr) &&
4413 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4414 (((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]4415 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4416 int len;
4417 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4418 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4419
4420 /* Note: we rely on the backend to get the header name to be used for
4421 * x-original-to, because the header is really meant for the backends.
4422 * However, if the backend did not specify any option, we have to rely
4423 * on the frontend's header name.
4424 */
4425 if (s->be->orgto_hdr_len) {
4426 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4427 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4428 } else {
4429 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4430 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4431 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4432 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]4433
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4434 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]4435 goto return_bad_req;
4436 }
4437 }
4438 }
4439
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4440 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4441 * If an "Upgrade" token is found, the header is left untouched in order not to have
4442 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4443 * "Upgrade" is present in the Connection header.
4444 */
4445 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4446 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4447 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4448 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4449 unsigned int want_flags = 0;
4450
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4451 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4452 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4453 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4454 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4455 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4456 want_flags |= TX_CON_CLO_SET;
4457 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4458 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4459 ((s->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
4460 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4461 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4462 want_flags |= TX_CON_KAL_SET;
4463 }
4464
4465 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4466 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4467 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4468
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4469
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4470 /* If we have no server assigned yet and we're balancing on url_param
4471 * with a POST request, we may be interested in checking the body for
4472 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4473 */
4474 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
4475 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4476 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4477 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4478 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4479 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4480
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4481 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4482 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4483#ifdef TCP_QUICKACK
4484 /* We expect some data from the client. Unless we know for sure
4485 * we already have a full request, we have to re-enable quick-ack
4486 * in case we previously disabled it, otherwise we might cause
4487 * the client to delay further data.
4488 */
4489 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4490 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4491 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4492 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4493 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4494#endif
4495 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4496
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4497 /*************************************************************
4498 * OK, that's finished for the headers. We have done what we *
4499 * could. Let's switch to the DATA state. *
4500 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4501 req->analyse_exp = TICK_ETERNITY;
4502 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4503
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4504 /* if the server closes the connection, we want to immediately react
4505 * and close the socket to save packets and syscalls.
4506 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4507 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
4508 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4509
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4510 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4511 /* OK let's go on with the BODY now */
4512 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4513
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4514 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4515 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4516 /* we detected a parsing error. We want to archive this request
4517 * in the dedicated proxy area for later troubleshooting.
4518 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4519 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]4520 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4521
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4522 txn->req.msg_state = HTTP_MSG_ERROR;
4523 txn->status = 400;
4524 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4525 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4526
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4527 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4528 if (s->listener->counters)
4529 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4530
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4531 if (!(s->flags & SN_ERR_MASK))
4532 s->flags |= SN_ERR_PRXCOND;
4533 if (!(s->flags & SN_FINST_MASK))
4534 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4535 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4536}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4537
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4538/* This function is an analyser which processes the HTTP tarpit. It always
4539 * returns zero, at the beginning because it prevents any other processing
4540 * from occurring, and at the end because it terminates the request.
4541 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4542int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4543{
4544 struct http_txn *txn = &s->txn;
4545
4546 /* This connection is being tarpitted. The CLIENT side has
4547 * already set the connect expiration date to the right
4548 * timeout. We just have to check that the client is still
4549 * there and that the timeout has not expired.
4550 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4551 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4552 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4553 !tick_is_expired(req->analyse_exp, now_ms))
4554 return 0;
4555
4556 /* We will set the queue timer to the time spent, just for
4557 * logging purposes. We fake a 500 server error, so that the
4558 * attacker will not suspect his connection has been tarpitted.
4559 * It will not cause trouble to the logs because we can exclude
4560 * the tarpitted connections by filtering on the 'PT' status flags.
4561 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4562 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4563
4564 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4565 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4566 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4567
4568 req->analysers = 0;
4569 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4570
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4571 if (!(s->flags & SN_ERR_MASK))
4572 s->flags |= SN_ERR_PRXCOND;
4573 if (!(s->flags & SN_FINST_MASK))
4574 s->flags |= SN_FINST_T;
4575 return 0;
4576}
4577
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4578/* This function is an analyser which waits for the HTTP request body. It waits
4579 * for either the buffer to be full, or the full advertised contents to have
4580 * reached the buffer. It must only be called after the standard HTTP request
4581 * processing has occurred, because it expects the request to be parsed and will
4582 * look for the Expect header. It may send a 100-Continue interim response. It
4583 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4584 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4585 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4586 */
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4587int http_wait_for_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4588{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4589 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4590 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4591
4592 /* We have to parse the HTTP request body to find any required data.
4593 * "balance url_param check_post" should have been the only way to get
4594 * into this. We were brought here after HTTP header analysis, so all
4595 * related structures are ready.
4596 */
4597
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4598 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4599 /* This is the first call */
4600 if (msg->msg_state < HTTP_MSG_BODY)
4601 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4602
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4603 if (msg->msg_state < HTTP_MSG_100_SENT) {
4604 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4605 * send an HTTP/1.1 100 Continue intermediate response.
4606 */
4607 if (msg->flags & HTTP_MSGF_VER_11) {
4608 struct hdr_ctx ctx;
4609 ctx.idx = 0;
4610 /* Expect is allowed in 1.1, look for it */
4611 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4612 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
4613 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
4614 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4615 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4616 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4617 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4618
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4619 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4620 * req->buf->p still points to the beginning of the message. We
4621 * must save the body in msg->next because it survives buffer
4622 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4623 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4624 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4625
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4626 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4627 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4628 else
4629 msg->msg_state = HTTP_MSG_DATA;
4630 }
4631
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4632 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4633 /* We're in content-length mode, we just have to wait for enough data. */
4634 if (req->buf->i - msg->sov < msg->body_len)
4635 goto missing_data;
4636
4637 /* OK we have everything we need now */
4638 goto http_end;
4639 }
4640
4641 /* OK here we're parsing a chunked-encoded message */
4642
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4643 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4644 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4645 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4646 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4647 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4648 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4649
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4650 if (!ret)
4651 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4652 else if (ret < 0) {
4653 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4654 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4655 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4656 }
4657
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4658 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4659 * 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]4660 * least a whole chunk or the whole content length bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4661 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4662 if (msg->msg_state == HTTP_MSG_TRAILERS)
4663 goto http_end;
4664
Willy Tarreau226071e2014-04-10 11:55:45 +0200[diff] [blame]4665 if (req->buf->i - msg->sov >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4666 goto http_end;
4667
4668 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4669 /* we get here if we need to wait for more data. If the buffer is full,
4670 * we have the maximum we can expect.
4671 */
4672 if (buffer_full(req->buf, global.tune.maxrewrite))
4673 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4674
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4675 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4676 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4677 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4678
4679 if (!(s->flags & SN_ERR_MASK))
4680 s->flags |= SN_ERR_CLITO;
4681 if (!(s->flags & SN_FINST_MASK))
4682 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4683 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4684 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4685
4686 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4687 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4688 /* Not enough data. We'll re-use the http-request
4689 * timeout here. Ideally, we should set the timeout
4690 * relative to the accept() date. We just set the
4691 * request timeout once at the beginning of the
4692 * request.
4693 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4694 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4695 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4696 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4697 return 0;
4698 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4699
4700 http_end:
4701 /* The situation will not evolve, so let's give up on the analysis. */
4702 s->logs.tv_request = now; /* update the request timer to reflect full request */
4703 req->analysers &= ~an_bit;
4704 req->analyse_exp = TICK_ETERNITY;
4705 return 1;
4706
4707 return_bad_req: /* let's centralize all bad requests */
4708 txn->req.msg_state = HTTP_MSG_ERROR;
4709 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4710 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4711
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4712 if (!(s->flags & SN_ERR_MASK))
4713 s->flags |= SN_ERR_PRXCOND;
4714 if (!(s->flags & SN_FINST_MASK))
4715 s->flags |= SN_FINST_R;
4716
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4717 return_err_msg:
4718 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4719 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4720 if (s->listener->counters)
4721 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4722 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4723}
4724
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4725/* send a server's name with an outgoing request over an established connection.
4726 * Note: this function is designed to be called once the request has been scheduled
4727 * for being forwarded. This is the reason why it rewinds the buffer before
4728 * proceeding.
4729 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4730int 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]4731
4732 struct hdr_ctx ctx;
4733
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4734 char *hdr_name = be->server_id_hdr_name;
4735 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4736 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4737 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4738 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4739
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4740 ctx.idx = 0;
4741
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4742 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4743 if (old_o) {
4744 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4745 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4746 txn->req.next += old_o;
4747 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4748 }
4749
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4750 old_i = chn->buf->i;
4751 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]4752 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4753 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4754 }
4755
4756 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4757 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4758 memcpy(hdr_val, hdr_name, hdr_name_len);
4759 hdr_val += hdr_name_len;
4760 *hdr_val++ = ':';
4761 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4762 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4763 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]4764
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4765 if (old_o) {
4766 /* If this was a forwarded request, we must readjust the amount of
4767 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4768 * variations. Note that the current state is >= HTTP_MSG_BODY,
4769 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4770 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4771 old_o += chn->buf->i - old_i;
4772 b_adv(chn->buf, old_o);
4773 txn->req.next -= old_o;
4774 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4775 }
4776
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4777 return 0;
4778}
4779
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4780/* Terminate current transaction and prepare a new one. This is very tricky
4781 * right now but it works.
4782 */
4783void http_end_txn_clean_session(struct session *s)
4784{
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4785 int prev_status = s->txn.status;
4786
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4787 /* FIXME: We need a more portable way of releasing a backend's and a
4788 * server's connections. We need a safer way to reinitialize buffer
4789 * flags. We also need a more accurate method for computing per-request
4790 * data.
4791 */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4792
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4793 /* unless we're doing keep-alive, we want to quickly close the connection
4794 * to the server.
4795 */
4796 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4797 !si_conn_ready(s->req->cons)) {
4798 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4799 si_shutr(s->req->cons);
4800 si_shutw(s->req->cons);
4801 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4802
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4803 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4804 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4805 if (unlikely(s->srv_conn))
4806 sess_change_server(s, NULL);
4807 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4808
4809 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4810 session_process_counters(s);
Willy Tarreauf3338342014-01-28 21:40:28 +0100[diff] [blame]4811 session_stop_content_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4812
4813 if (s->txn.status) {
4814 int n;
4815
4816 n = s->txn.status / 100;
4817 if (n < 1 || n > 5)
4818 n = 0;
4819
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4820 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4821 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4822 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4823 s->fe->fe_counters.p.http.comp_rsp++;
4824 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4825 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4826 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4827 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4828 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4829 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4830 s->be->be_counters.p.http.comp_rsp++;
4831 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4832 }
4833
4834 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4835 s->logs.bytes_in -= s->req->buf->i;
4836 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4837
4838 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4839 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4840 !(s->flags & SN_MONITOR) &&
4841 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4842 s->do_log(s);
4843 }
4844
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]4845 session_update_time_stats(s);
4846
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4847 s->logs.accept_date = date; /* user-visible date for logging */
4848 s->logs.tv_accept = now; /* corrected date for internal use */
4849 tv_zero(&s->logs.tv_request);
4850 s->logs.t_queue = -1;
4851 s->logs.t_connect = -1;
4852 s->logs.t_data = -1;
4853 s->logs.t_close = 0;
4854 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4855 s->logs.srv_queue_size = 0; /* we will get this number soon */
4856
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4857 s->logs.bytes_in = s->req->total = s->req->buf->i;
4858 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4859
4860 if (s->pend_pos)
4861 pendconn_free(s->pend_pos);
4862
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4863 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4864 if (s->flags & SN_CURR_SESS) {
4865 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4866 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4867 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4868 if (may_dequeue_tasks(objt_server(s->target), s->be))
4869 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4870 }
4871
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4872 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4873
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4874 /* only release our endpoint if we don't intend to reuse the
4875 * connection.
4876 */
4877 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4878 !si_conn_ready(s->req->cons)) {
4879 si_release_endpoint(s->req->cons);
4880 }
4881
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4882 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4883 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4884 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4885 s->req->cons->exp = TICK_ETERNITY;
Willy Tarreauc9200962013-12-31 23:03:09 +0100[diff] [blame]4886 s->req->cons->flags &= SI_FL_DONT_WAKE; /* we're in the context of process_session */
Willy Tarreau77d29022014-06-11 14:11:44 +0200[diff] [blame]4887 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_READ_NOEXP);
Willy Tarreau1592d1e2014-06-11 16:49:14 +0200[diff] [blame]4888 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);
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4889 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]4890 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE|SN_SRV_REUSED);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4891
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4892 s->txn.meth = 0;
4893 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4894 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4895
4896 if (prev_status == 401 || prev_status == 407) {
4897 /* In HTTP keep-alive mode, if we receive a 401, we still have
4898 * a chance of being able to send the visitor again to the same
4899 * server over the same connection. This is required by some
4900 * broken protocols such as NTLM, and anyway whenever there is
4901 * an opportunity for sending the challenge to the proper place,
4902 * it's better to do it (at least it helps with debugging).
4903 */
4904 s->txn.flags |= TX_PREFER_LAST;
4905 }
4906
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4907 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4908 s->req->cons->flags |= SI_FL_INDEP_STR;
4909
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4910 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4911 s->req->flags |= CF_NEVER_WAIT;
4912 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4913 }
4914
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4915 /* if the request buffer is not empty, it means we're
4916 * about to process another request, so send pending
4917 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4918 * Just don't do this if the buffer is close to be full,
4919 * because the request will wait for it to flush a little
4920 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4921 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4922 if (s->req->buf->i) {
4923 if (s->rep->buf->o &&
4924 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4925 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]4926 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4927 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4928
4929 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4930 channel_auto_read(s->req);
4931 channel_auto_close(s->req);
4932 channel_auto_read(s->rep);
4933 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4934
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]4935 /* we're in keep-alive with an idle connection, monitor it */
4936 si_idle_conn(s->req->cons);
4937
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4938 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4939 s->rep->analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4940}
4941
4942
4943/* This function updates the request state machine according to the response
4944 * state machine and buffer flags. It returns 1 if it changes anything (flag
4945 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4946 * it is only used to find when a request/response couple is complete. Both
4947 * this function and its equivalent should loop until both return zero. It
4948 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4949 */
4950int http_sync_req_state(struct session *s)
4951{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4952 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4953 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4954 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4955 unsigned int old_state = txn->req.msg_state;
4956
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4957 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4958 return 0;
4959
4960 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4961 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4962 * We can shut the read side unless we want to abort_on_close,
4963 * or we have a POST request. The issue with POST requests is
4964 * that some browsers still send a CRLF after the request, and
4965 * this CRLF must be read so that it does not remain in the kernel
4966 * buffers, otherwise a close could cause an RST on some systems
4967 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4968 * Note that if we're using keep-alive on the client side, we'd
4969 * rather poll now and keep the polling enabled for the whole
4970 * session's life than enabling/disabling it between each
4971 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4972 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4973 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
4974 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
4975 !(s->be->options & PR_O_ABRT_CLOSE) &&
4976 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4977 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4978
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4979 /* if the server closes the connection, we want to immediately react
4980 * and close the socket to save packets and syscalls.
4981 */
4982 chn->cons->flags |= SI_FL_NOHALF;
4983
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4984 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4985 goto wait_other_side;
4986
4987 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4988 /* The server has not finished to respond, so we
4989 * don't want to move in order not to upset it.
4990 */
4991 goto wait_other_side;
4992 }
4993
4994 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4995 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4996 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4997 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4998 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4999 goto wait_other_side;
5000 }
5001
5002 /* When we get here, it means that both the request and the
5003 * response have finished receiving. Depending on the connection
5004 * mode, we'll have to wait for the last bytes to leave in either
5005 * direction, and sometimes for a close to be effective.
5006 */
5007
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5008 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5009 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5010 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5011 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5012 }
5013 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5014 /* Option forceclose is set, or either side wants to close,
5015 * let's enforce it now that we're not expecting any new
5016 * data to come. The caller knows the session is complete
5017 * once both states are CLOSED.
5018 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5019 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5020 channel_shutr_now(chn);
5021 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5022 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5023 }
5024 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5025 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5026 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5027 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5028 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5029 channel_auto_read(chn);
5030 txn->req.msg_state = HTTP_MSG_TUNNEL;
5031 chn->flags |= CF_NEVER_WAIT;
5032 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5033 }
5034
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5035 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5036 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5037 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5038
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5039 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5040 txn->req.msg_state = HTTP_MSG_CLOSING;
5041 goto http_msg_closing;
5042 }
5043 else {
5044 txn->req.msg_state = HTTP_MSG_CLOSED;
5045 goto http_msg_closed;
5046 }
5047 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5048 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5049 }
5050
5051 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5052 http_msg_closing:
5053 /* nothing else to forward, just waiting for the output buffer
5054 * to be empty and for the shutw_now to take effect.
5055 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5056 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5057 txn->req.msg_state = HTTP_MSG_CLOSED;
5058 goto http_msg_closed;
5059 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5060 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5061 txn->req.msg_state = HTTP_MSG_ERROR;
5062 goto wait_other_side;
5063 }
5064 }
5065
5066 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5067 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5068 /* see above in MSG_DONE why we only do this in these states */
5069 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5070 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5071 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5072 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5073 goto wait_other_side;
5074 }
5075
5076 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5077 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5078}
5079
5080
5081/* This function updates the response state machine according to the request
5082 * state machine and buffer flags. It returns 1 if it changes anything (flag
5083 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5084 * it is only used to find when a request/response couple is complete. Both
5085 * this function and its equivalent should loop until both return zero. It
5086 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5087 */
5088int http_sync_res_state(struct session *s)
5089{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5090 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5091 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5092 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5093 unsigned int old_state = txn->rsp.msg_state;
5094
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5095 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5096 return 0;
5097
5098 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5099 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5100 * still monitor the server connection for a possible close
5101 * while the request is being uploaded, so we don't disable
5102 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5103 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5104 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5105
5106 if (txn->req.msg_state == HTTP_MSG_ERROR)
5107 goto wait_other_side;
5108
5109 if (txn->req.msg_state < HTTP_MSG_DONE) {
5110 /* The client seems to still be sending data, probably
5111 * because we got an error response during an upload.
5112 * We have the choice of either breaking the connection
5113 * or letting it pass through. Let's do the later.
5114 */
5115 goto wait_other_side;
5116 }
5117
5118 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5119 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5120 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5121 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5122 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5123 goto wait_other_side;
5124 }
5125
5126 /* When we get here, it means that both the request and the
5127 * response have finished receiving. Depending on the connection
5128 * mode, we'll have to wait for the last bytes to leave in either
5129 * direction, and sometimes for a close to be effective.
5130 */
5131
5132 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5133 /* Server-close mode : shut read and wait for the request
5134 * side to close its output buffer. The caller will detect
5135 * when we're in DONE and the other is in CLOSED and will
5136 * catch that for the final cleanup.
5137 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5138 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5139 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5140 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5141 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5142 /* Option forceclose is set, or either side wants to close,
5143 * let's enforce it now that we're not expecting any new
5144 * data to come. The caller knows the session is complete
5145 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5146 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5147 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5148 channel_shutr_now(chn);
5149 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5150 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5151 }
5152 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5153 /* The last possible modes are keep-alive and tunnel. Tunnel will
5154 * need to forward remaining data. Keep-alive will need to monitor
5155 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5156 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5157 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5158 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5159 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5160 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5161 }
5162
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5163 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5164 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5165 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5166 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5167 goto http_msg_closing;
5168 }
5169 else {
5170 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5171 goto http_msg_closed;
5172 }
5173 }
5174 goto wait_other_side;
5175 }
5176
5177 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5178 http_msg_closing:
5179 /* nothing else to forward, just waiting for the output buffer
5180 * to be empty and for the shutw_now to take effect.
5181 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5182 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5183 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5184 goto http_msg_closed;
5185 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5186 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5187 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5188 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5189 if (objt_server(s->target))
5190 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5191 goto wait_other_side;
5192 }
5193 }
5194
5195 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5196 http_msg_closed:
5197 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5198 bi_erase(chn);
5199 channel_auto_close(chn);
5200 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5201 goto wait_other_side;
5202 }
5203
5204 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5205 /* We force the response to leave immediately if we're waiting for the
5206 * other side, since there is no pending shutdown to push it out.
5207 */
5208 if (!channel_is_empty(chn))
5209 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5210 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5211}
5212
5213
5214/* Resync the request and response state machines. Return 1 if either state
5215 * changes.
5216 */
5217int http_resync_states(struct session *s)
5218{
5219 struct http_txn *txn = &s->txn;
5220 int old_req_state = txn->req.msg_state;
5221 int old_res_state = txn->rsp.msg_state;
5222
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5223 http_sync_req_state(s);
5224 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5225 if (!http_sync_res_state(s))
5226 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5227 if (!http_sync_req_state(s))
5228 break;
5229 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5230
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5231 /* OK, both state machines agree on a compatible state.
5232 * There are a few cases we're interested in :
5233 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5234 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5235 * directions, so let's simply disable both analysers.
5236 * - HTTP_MSG_CLOSED on the response only means we must abort the
5237 * request.
5238 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5239 * with server-close mode means we've completed one request and we
5240 * must re-initialize the server connection.
5241 */
5242
5243 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5244 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5245 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5246 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
5247 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5248 channel_auto_close(s->req);
5249 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5250 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5251 channel_auto_close(s->rep);
5252 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5253 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5254 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
5255 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5256 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5257 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5258 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5259 channel_auto_close(s->rep);
5260 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5261 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5262 channel_abort(s->req);
5263 channel_auto_close(s->req);
5264 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5265 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5266 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5267 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5268 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5269 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5270 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5271 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5272 /* server-close/keep-alive: terminate this transaction,
5273 * possibly killing the server connection and reinitialize
5274 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5275 */
5276 http_end_txn_clean_session(s);
5277 }
5278
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5279 return txn->req.msg_state != old_req_state ||
5280 txn->rsp.msg_state != old_res_state;
5281}
5282
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5283/* This function is an analyser which forwards request body (including chunk
5284 * sizes if any). It is called as soon as we must forward, even if we forward
5285 * zero byte. The only situation where it must not be called is when we're in
5286 * tunnel mode and we want to forward till the close. It's used both to forward
5287 * remaining data and to resync after end of body. It expects the msg_state to
5288 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5289 * 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]5290 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5291 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5292 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5293int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5294{
5295 struct http_txn *txn = &s->txn;
5296 struct http_msg *msg = &s->txn.req;
5297
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5298 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5299 return 0;
5300
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5301 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]5302 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5303 /* Output closed while we were sending data. We must abort and
5304 * wake the other side up.
5305 */
5306 msg->msg_state = HTTP_MSG_ERROR;
5307 http_resync_states(s);
Willy Tarreaub9edf8f2014-05-07 14:24:16 +0200[diff] [blame]5308
5309 if (req->flags & CF_READ_TIMEOUT)
5310 goto cli_timeout;
5311
5312 if (req->flags & CF_WRITE_TIMEOUT)
5313 goto srv_timeout;
5314
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5315 return 1;
5316 }
5317
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5318 /* Note that we don't have to send 100-continue back because we don't
5319 * need the data to complete our job, and it's up to the server to
5320 * decide whether to return 100, 417 or anything else in return of
5321 * an "Expect: 100-continue" header.
5322 */
5323
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5324 if (msg->sov) {
5325 /* we have msg->sov which points to the first byte of message
5326 * body, and req->buf.p still points to the beginning of the
5327 * message. We forward the headers now, as we don't need them
5328 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5329 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5330 b_adv(req->buf, msg->sov);
5331 msg->next -= msg->sov;
5332 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5333
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5334 /* The previous analysers guarantee that the state is somewhere
5335 * between MSG_BODY and the first MSG_DATA. So msg->sol and
5336 * msg->next are always correct.
5337 */
5338 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
5339 if (msg->flags & HTTP_MSGF_TE_CHNK)
5340 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5341 else
5342 msg->msg_state = HTTP_MSG_DATA;
5343 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5344 }
5345
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5346 /* Some post-connect processing might want us to refrain from starting to
5347 * forward data. Currently, the only reason for this is "balance url_param"
5348 * whichs need to parse/process the request after we've enabled forwarding.
5349 */
5350 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
5351 if (!(s->rep->flags & CF_READ_ATTACHED)) {
5352 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5353 req->flags |= CF_WAKE_CONNECT;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5354 goto missing_data;
5355 }
5356 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5357 }
5358
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5359 /* in most states, we should abort in case of early close */
5360 channel_auto_close(req);
5361
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5362 if (req->to_forward) {
5363 /* We can't process the buffer's contents yet */
5364 req->flags |= CF_WAKE_WRITE;
5365 goto missing_data;
5366 }
5367
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5368 while (1) {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5369 if (msg->msg_state == HTTP_MSG_DATA) {
5370 /* must still forward */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5371 /* we may have some pending data starting at req->buf->p */
5372 if (msg->chunk_len > req->buf->i - msg->next) {
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5373 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5374 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5375 }
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5376 msg->next += msg->chunk_len;
5377 msg->chunk_len = 0;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5378
5379 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5380 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5381 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5382 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5383 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5384 }
5385 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5386 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5387 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5388 * TRAILERS state.
5389 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5390 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5391
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5392 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5393 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5394 else if (ret < 0) {
5395 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5396 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5397 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]5398 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5399 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5400 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5401 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5402 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5403 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5404 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5405
5406 if (ret == 0)
5407 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5408 else if (ret < 0) {
5409 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5410 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5411 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]5412 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5413 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5414 /* we're in MSG_CHUNK_SIZE now */
5415 }
5416 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5417 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5418
5419 if (ret == 0)
5420 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5421 else if (ret < 0) {
5422 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5423 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5424 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]5425 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5426 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5427 /* we're in HTTP_MSG_DONE now */
5428 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5429 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5430 int old_state = msg->msg_state;
5431
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5432 /* other states, DONE...TUNNEL */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5433
5434 /* we may have some pending data starting at req->buf->p
5435 * such as last chunk of data or trailers.
5436 */
5437 b_adv(req->buf, msg->next);
5438 msg->next = 0;
5439
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5440 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5441 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5442 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5443 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5444 if (http_resync_states(s)) {
5445 /* some state changes occurred, maybe the analyser
5446 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5447 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5448 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5449 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5450 /* request errors are most likely due to
5451 * the server aborting the transfer.
5452 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5453 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5454 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5455 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5456 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5457 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5458 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5459 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5460 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5461
5462 /* If "option abortonclose" is set on the backend, we
5463 * want to monitor the client's connection and forward
5464 * any shutdown notification to the server, which will
5465 * decide whether to close or to go on processing the
5466 * request.
5467 */
5468 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5469 channel_auto_read(req);
5470 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5471 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5472 else if (s->txn.meth == HTTP_METH_POST) {
5473 /* POST requests may require to read extra CRLF
5474 * sent by broken browsers and which could cause
5475 * an RST to be sent upon close on some systems
5476 * (eg: Linux).
5477 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5478 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5479 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5480
Willy Tarreaub1982e22014-05-06 22:57:53 +0200[diff] [blame]5481 /* if we received everything, we don't want to expire anymore */
5482 if (msg->msg_state == HTTP_MSG_DONE) {
5483 req->flags |= CF_READ_NOEXP;
5484 req->rex = TICK_ETERNITY;
5485 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5486 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5487 }
5488 }
5489
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5490 missing_data:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5491 /* we may have some pending data starting at req->buf->p */
5492 b_adv(req->buf, msg->next);
5493 msg->next = 0;
5494 msg->chunk_len -= channel_forward(req, msg->chunk_len);
5495
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5496 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5497 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5498 if (!(s->flags & SN_ERR_MASK))
5499 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5500 if (!(s->flags & SN_FINST_MASK)) {
5501 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5502 s->flags |= SN_FINST_H;
5503 else
5504 s->flags |= SN_FINST_D;
5505 }
5506
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5507 s->fe->fe_counters.cli_aborts++;
5508 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5509 if (objt_server(s->target))
5510 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5511
5512 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5513 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5514
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5515 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5516 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5517 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5518
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5519 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5520 * 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]5521 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5522 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5523 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5524
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5525 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5526 * 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]5527 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5528 * modes are already handled by the stream sock layer. We must not do
5529 * this in content-length mode because it could present the MSG_MORE
5530 * flag with the last block of forwarded data, which would cause an
5531 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5532 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5533 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5534 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5535
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5536 return 0;
5537
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5538 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5539 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5540 if (s->listener->counters)
5541 s->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5542
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5543 return_bad_req_stats_ok:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5544 /* we may have some pending data starting at req->buf->p */
5545 b_adv(req->buf, msg->next);
5546 msg->next = 0;
5547
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5548 txn->req.msg_state = HTTP_MSG_ERROR;
5549 if (txn->status) {
5550 /* Note: we don't send any error if some data were already sent */
5551 stream_int_retnclose(req->prod, NULL);
5552 } else {
5553 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5554 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5555 }
5556 req->analysers = 0;
5557 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]5558
5559 if (!(s->flags & SN_ERR_MASK))
5560 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5561 if (!(s->flags & SN_FINST_MASK)) {
5562 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5563 s->flags |= SN_FINST_H;
5564 else
5565 s->flags |= SN_FINST_D;
5566 }
5567 return 0;
5568
5569 aborted_xfer:
5570 txn->req.msg_state = HTTP_MSG_ERROR;
5571 if (txn->status) {
5572 /* Note: we don't send any error if some data were already sent */
5573 stream_int_retnclose(req->prod, NULL);
5574 } else {
5575 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5576 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5577 }
5578 req->analysers = 0;
5579 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5580
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5581 s->fe->fe_counters.srv_aborts++;
5582 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5583 if (objt_server(s->target))
5584 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5585
5586 if (!(s->flags & SN_ERR_MASK))
5587 s->flags |= SN_ERR_SRVCL;
5588 if (!(s->flags & SN_FINST_MASK)) {
5589 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5590 s->flags |= SN_FINST_H;
5591 else
5592 s->flags |= SN_FINST_D;
5593 }
Willy Tarreaub9edf8f2014-05-07 14:24:16 +0200[diff] [blame]5594 return 0;
5595
5596 cli_timeout:
5597 if (!(s->flags & SN_ERR_MASK))
5598 s->flags |= SN_ERR_CLITO;
5599
5600 if (!(s->flags & SN_FINST_MASK)) {
5601 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5602 s->flags |= SN_FINST_H;
5603 else
5604 s->flags |= SN_FINST_D;
5605 }
5606
5607 if (txn->status > 0) {
5608 /* Don't send any error message if something was already sent */
5609 stream_int_retnclose(req->prod, NULL);
5610 }
5611 else {
5612 txn->status = 408;
5613 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
5614 }
5615
5616 msg->msg_state = HTTP_MSG_ERROR;
5617 req->analysers = 0;
5618 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5619
5620 session_inc_http_err_ctr(s);
5621 s->fe->fe_counters.failed_req++;
5622 s->be->be_counters.failed_req++;
5623 if (s->listener->counters)
5624 s->listener->counters->failed_req++;
5625 return 0;
5626
5627 srv_timeout:
5628 if (!(s->flags & SN_ERR_MASK))
5629 s->flags |= SN_ERR_SRVTO;
5630
5631 if (!(s->flags & SN_FINST_MASK)) {
5632 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5633 s->flags |= SN_FINST_H;
5634 else
5635 s->flags |= SN_FINST_D;
5636 }
5637
5638 if (txn->status > 0) {
5639 /* Don't send any error message if something was already sent */
5640 stream_int_retnclose(req->prod, NULL);
5641 }
5642 else {
5643 txn->status = 504;
5644 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_504));
5645 }
5646
5647 msg->msg_state = HTTP_MSG_ERROR;
5648 req->analysers = 0;
5649 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5650
5651 s->be->be_counters.failed_resp++;
5652 if (objt_server(s->target)) {
5653 objt_server(s->target)->counters.failed_resp++;
5654 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
5655 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5656 return 0;
5657}
5658
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5659/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5660 * processing can continue on next analysers, or zero if it either needs more
5661 * data or wants to immediately abort the response (eg: timeout, error, ...). It
5662 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
5663 * when it has nothing left to do, and may remove any analyser when it wants to
5664 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5665 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5666int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5667{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5668 struct http_txn *txn = &s->txn;
5669 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5670 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5671 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5672 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5673 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5674
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5675 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]5676 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5677 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5678 rep,
5679 rep->rex, rep->wex,
5680 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5681 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5682 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5683
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5684 /*
5685 * Now parse the partial (or complete) lines.
5686 * We will check the response syntax, and also join multi-line
5687 * headers. An index of all the lines will be elaborated while
5688 * parsing.
5689 *
5690 * For the parsing, we use a 28 states FSM.
5691 *
5692 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5693 * rep->buf->p = beginning of response
5694 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5695 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5696 * msg->eol = end of current header or line (LF or CRLF)
5697 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5698 */
5699
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5700 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5701 /* There's a protected area at the end of the buffer for rewriting
5702 * purposes. We don't want to start to parse the request if the
5703 * protected area is affected, because we may have to move processed
5704 * data later, which is much more complicated.
5705 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5706 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5707 if (unlikely(!channel_reserved(rep))) {
5708 /* some data has still not left the buffer, wake us once that's done */
5709 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5710 goto abort_response;
5711 channel_dont_close(rep);
5712 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5713 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5714 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5715 }
5716
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5717 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5718 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5719 buffer_slow_realign(rep->buf);
5720
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5721 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5722 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5723 }
5724
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5725 /* 1: we might have to print this header in debug mode */
5726 if (unlikely((global.mode & MODE_DEBUG) &&
5727 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5728 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5729 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5730
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5731 sol = rep->buf->p;
5732 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5733 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5734
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5735 sol += hdr_idx_first_pos(&txn->hdr_idx);
5736 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5737
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5738 while (cur_idx) {
5739 eol = sol + txn->hdr_idx.v[cur_idx].len;
5740 debug_hdr("srvhdr", s, sol, eol);
5741 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5742 cur_idx = txn->hdr_idx.v[cur_idx].next;
5743 }
5744 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5745
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5746 /*
5747 * Now we quickly check if we have found a full valid response.
5748 * If not so, we check the FD and buffer states before leaving.
5749 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5750 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5751 * responses are checked first.
5752 *
5753 * Depending on whether the client is still there or not, we
5754 * may send an error response back or not. Note that normally
5755 * we should only check for HTTP status there, and check I/O
5756 * errors somewhere else.
5757 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5758
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5759 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5760 /* Invalid response */
5761 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5762 /* we detected a parsing error. We want to archive this response
5763 * in the dedicated proxy area for later troubleshooting.
5764 */
5765 hdr_response_bad:
5766 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5767 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]5768
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5769 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5770 if (objt_server(s->target)) {
5771 objt_server(s->target)->counters.failed_resp++;
5772 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5773 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5774 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5775 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5776 rep->analysers = 0;
5777 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5778 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5779 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5780 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5781
5782 if (!(s->flags & SN_ERR_MASK))
5783 s->flags |= SN_ERR_PRXCOND;
5784 if (!(s->flags & SN_FINST_MASK))
5785 s->flags |= SN_FINST_H;
5786
5787 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5788 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5789
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5790 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5791 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5792 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5793 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5794 goto hdr_response_bad;
5795 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5796
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5797 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5798 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5799 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5800 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]5801 else if (txn->flags & TX_NOT_FIRST)
5802 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5803
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5804 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5805 if (objt_server(s->target)) {
5806 objt_server(s->target)->counters.failed_resp++;
5807 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5808 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5809
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5810 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5811 rep->analysers = 0;
5812 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5813 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5814 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5815 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5816
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5817 if (!(s->flags & SN_ERR_MASK))
5818 s->flags |= SN_ERR_SRVCL;
5819 if (!(s->flags & SN_FINST_MASK))
5820 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5821 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5822 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5823
Willy Tarreaub9edf8f2014-05-07 14:24:16 +0200[diff] [blame]5824 /* read/write timeout : return a 504 to the client.
5825 * The write timeout may happen when we're uploading POST
5826 * data that the server is not consuming fast enough.
5827 */
5828 else if (rep->flags & (CF_READ_TIMEOUT|CF_WRITE_TIMEOUT)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5829 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5830 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]5831 else if (txn->flags & TX_NOT_FIRST)
5832 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5833
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5834 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5835 if (objt_server(s->target)) {
5836 objt_server(s->target)->counters.failed_resp++;
5837 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5838 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5839
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5840 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5841 rep->analysers = 0;
5842 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5843 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5844 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5845 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5846
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5847 if (!(s->flags & SN_ERR_MASK))
5848 s->flags |= SN_ERR_SRVTO;
5849 if (!(s->flags & SN_FINST_MASK))
5850 s->flags |= SN_FINST_H;
5851 return 0;
5852 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5853
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5854 /* client abort with an abortonclose */
5855 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5856 s->fe->fe_counters.cli_aborts++;
5857 s->be->be_counters.cli_aborts++;
5858 if (objt_server(s->target))
5859 objt_server(s->target)->counters.cli_aborts++;
5860
5861 rep->analysers = 0;
5862 channel_auto_close(rep);
5863
5864 txn->status = 400;
5865 bi_erase(rep);
5866 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5867
5868 if (!(s->flags & SN_ERR_MASK))
5869 s->flags |= SN_ERR_CLICL;
5870 if (!(s->flags & SN_FINST_MASK))
5871 s->flags |= SN_FINST_H;
5872
5873 /* process_session() will take care of the error */
5874 return 0;
5875 }
5876
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5877 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5878 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5879 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5880 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]5881 else if (txn->flags & TX_NOT_FIRST)
5882 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5883
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5884 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5885 if (objt_server(s->target)) {
5886 objt_server(s->target)->counters.failed_resp++;
5887 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5888 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5889
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5890 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5891 rep->analysers = 0;
5892 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5893 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5894 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5895 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5896
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5897 if (!(s->flags & SN_ERR_MASK))
5898 s->flags |= SN_ERR_SRVCL;
5899 if (!(s->flags & SN_FINST_MASK))
5900 s->flags |= SN_FINST_H;
5901 return 0;
5902 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5903
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5904 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5905 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5906 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5907 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]5908 else if (txn->flags & TX_NOT_FIRST)
5909 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5910
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5911 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5912 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5913 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5914
5915 if (!(s->flags & SN_ERR_MASK))
5916 s->flags |= SN_ERR_CLICL;
5917 if (!(s->flags & SN_FINST_MASK))
5918 s->flags |= SN_FINST_H;
5919
5920 /* process_session() will take care of the error */
5921 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5922 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5923
Willy Tarreau3bed5e92014-05-07 14:50:10 +0200[diff] [blame]5924 /* we don't want to expire on the server side first until the client
5925 * has sent all the expected message body.
5926 */
5927 if (txn->req.msg_state >= HTTP_MSG_BODY && txn->req.msg_state < HTTP_MSG_DONE)
5928 rep->flags |= CF_READ_NOEXP;
5929
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5930 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5931 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5932 return 0;
5933 }
5934
5935 /* More interesting part now : we know that we have a complete
5936 * response which at least looks like HTTP. We have an indicator
5937 * of each header's length, so we can parse them quickly.
5938 */
5939
5940 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5941 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]5942
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5943 /*
5944 * 1: get the status code
5945 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5946 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5947 if (n < 1 || n > 5)
5948 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5949 /* when the client triggers a 4xx from the server, it's most often due
5950 * to a missing object or permission. These events should be tracked
5951 * because if they happen often, it may indicate a brute force or a
5952 * vulnerability scan.
5953 */
5954 if (n == 4)
5955 session_inc_http_err_ctr(s);
5956
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5957 if (objt_server(s->target))
5958 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5959
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5960 /* check if the response is HTTP/1.1 or above */
5961 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5962 ((rep->buf->p[5] > '1') ||
5963 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5964 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5965
5966 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5967 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]5968
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5969 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5970 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5971
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5972 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]5973
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5974 /* Adjust server's health based on status code. Note: status codes 501
5975 * and 505 are triggered on demand by client request, so we must not
5976 * count them as server failures.
5977 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5978 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5979 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5980 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5981 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5982 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5983 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5984
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5985 /*
5986 * 2: check for cacheability.
5987 */
5988
5989 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5990 case 100:
5991 /*
5992 * We may be facing a 100-continue response, in which case this
5993 * is not the right response, and we're waiting for the next one.
5994 * Let's allow this response to go to the client and wait for the
5995 * next one.
5996 */
5997 hdr_idx_init(&txn->hdr_idx);
5998 msg->next -= channel_forward(rep, msg->next);
5999 msg->msg_state = HTTP_MSG_RPBEFORE;
6000 txn->status = 0;
6001 s->logs.t_data = -1; /* was not a response yet */
6002 goto next_one;
6003
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6004 case 200:
6005 case 203:
6006 case 206:
6007 case 300:
6008 case 301:
6009 case 410:
6010 /* RFC2616 @13.4:
6011 * "A response received with a status code of
6012 * 200, 203, 206, 300, 301 or 410 MAY be stored
6013 * by a cache (...) unless a cache-control
6014 * directive prohibits caching."
6015 *
6016 * RFC2616 @9.5: POST method :
6017 * "Responses to this method are not cacheable,
6018 * unless the response includes appropriate
6019 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6020 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6021 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6022 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6023 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
6024 break;
6025 default:
6026 break;
6027 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6028
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6029 /*
6030 * 3: we may need to capture headers
6031 */
6032 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]6033 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6034 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6035 txn->rsp.cap, s->fe->rsp_cap);
6036
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6037 /* 4: determine the transfer-length.
6038 * According to RFC2616 #4.4, amended by the HTTPbis working group,
6039 * the presence of a message-body in a RESPONSE and its transfer length
6040 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6041 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6042 * All responses to the HEAD request method MUST NOT include a
6043 * message-body, even though the presence of entity-header fields
6044 * might lead one to believe they do. All 1xx (informational), 204
6045 * (No Content), and 304 (Not Modified) responses MUST NOT include a
6046 * message-body. All other responses do include a message-body,
6047 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6048 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6049 * 1. Any response which "MUST NOT" include a message-body (such as the
6050 * 1xx, 204 and 304 responses and any response to a HEAD request) is
6051 * always terminated by the first empty line after the header fields,
6052 * regardless of the entity-header fields present in the message.
6053 *
6054 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
6055 * the "chunked" transfer-coding (Section 6.2) is used, the
6056 * transfer-length is defined by the use of this transfer-coding.
6057 * If a Transfer-Encoding header field is present and the "chunked"
6058 * transfer-coding is not present, the transfer-length is defined by
6059 * the sender closing the connection.
6060 *
6061 * 3. If a Content-Length header field is present, its decimal value in
6062 * OCTETs represents both the entity-length and the transfer-length.
6063 * If a message is received with both a Transfer-Encoding header
6064 * field and a Content-Length header field, the latter MUST be ignored.
6065 *
6066 * 4. If the message uses the media type "multipart/byteranges", and
6067 * the transfer-length is not otherwise specified, then this self-
6068 * delimiting media type defines the transfer-length. This media
6069 * type MUST NOT be used unless the sender knows that the recipient
6070 * can parse it; the presence in a request of a Range header with
6071 * multiple byte-range specifiers from a 1.1 client implies that the
6072 * client can parse multipart/byteranges responses.
6073 *
6074 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6075 */
6076
6077 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6078 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6079 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6080 * FIXME: should we parse anyway and return an error on chunked encoding ?
6081 */
6082 if (txn->meth == HTTP_METH_HEAD ||
6083 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6084 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6085 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]6086 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6087 goto skip_content_length;
6088 }
6089
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6090 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6091 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6092 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6093 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6094 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6095 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6096 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6097 /* bad transfer-encoding (chunked followed by something else) */
6098 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6099 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6100 break;
6101 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6102 }
6103
6104 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
6105 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6106 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6107 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6108 signed long long cl;
6109
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6110 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6111 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6112 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6113 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6114
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6115 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6116 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6117 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6118 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6119
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6120 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6121 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6122 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6123 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6124
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6125 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6126 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6127 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6128 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6129
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6130 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6131 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6132 }
6133
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6134 if (s->fe->comp || s->be->comp)
6135 select_compression_response_header(s, rep->buf);
6136
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6137skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6138 /* Now we have to check if we need to modify the Connection header.
6139 * This is more difficult on the response than it is on the request,
6140 * because we can have two different HTTP versions and we don't know
6141 * how the client will interprete a response. For instance, let's say
6142 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6143 * HTTP/1.1 response without any header. Maybe it will bound itself to
6144 * HTTP/1.0 because it only knows about it, and will consider the lack
6145 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6146 * the lack of header as a keep-alive. Thus we will use two flags
6147 * indicating how a request MAY be understood by the client. In case
6148 * of multiple possibilities, we'll fix the header to be explicit. If
6149 * ambiguous cases such as both close and keepalive are seen, then we
6150 * will fall back to explicit close. Note that we won't take risks with
6151 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6152 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6153 */
6154
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6155 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6156 txn->status == 101)) {
6157 /* Either we've established an explicit tunnel, or we're
6158 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6159 * to understand the next protocols. We have to switch to tunnel
6160 * mode, so that we transfer the request and responses then let
6161 * this protocol pass unmodified. When we later implement specific
6162 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6163 * header which contains information about that protocol for
6164 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6165 */
6166 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6167 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6168 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6169 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6170 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6171 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6172 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6173
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6174 /* this situation happens when combining pretend-keepalive with httpclose. */
6175 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6176 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6177 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6178 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6179
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6180 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6181 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6182 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6183 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6184
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6185 /* now adjust header transformations depending on current state */
6186 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6187 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6188 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6189 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6190 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6191 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6192 else { /* SCL / KAL */
6193 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6194 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6195 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6196 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6197
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6198 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6199 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6200
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6201 /* Some keep-alive responses are converted to Server-close if
6202 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6203 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6204 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6205 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6206 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6207 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6208 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6209 }
6210
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6211 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6212 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6213
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6214 /* end of job, return OK */
6215 rep->analysers &= ~an_bit;
6216 rep->analyse_exp = TICK_ETERNITY;
6217 channel_auto_close(rep);
6218 return 1;
6219
6220 abort_keep_alive:
6221 /* A keep-alive request to the server failed on a network error.
6222 * The client is required to retry. We need to close without returning
6223 * any other information so that the client retries.
6224 */
6225 txn->status = 0;
6226 rep->analysers = 0;
6227 s->req->analysers = 0;
6228 channel_auto_close(rep);
6229 s->logs.logwait = 0;
6230 s->logs.level = 0;
6231 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
6232 bi_erase(rep);
6233 stream_int_retnclose(rep->cons, NULL);
6234 return 0;
6235}
6236
6237/* This function performs all the processing enabled for the current response.
6238 * It normally returns 1 unless it wants to break. It relies on buffers flags,
6239 * and updates s->rep->analysers. It might make sense to explode it into several
6240 * other functions. It works like process_request (see indications above).
6241 */
6242int http_process_res_common(struct session *s, struct channel *rep, int an_bit, struct proxy *px)
6243{
6244 struct http_txn *txn = &s->txn;
6245 struct http_msg *msg = &txn->rsp;
6246 struct proxy *cur_proxy;
6247 struct cond_wordlist *wl;
6248 struct http_res_rule *http_res_last_rule = NULL;
6249
6250 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
6251 now_ms, __FUNCTION__,
6252 s,
6253 rep,
6254 rep->rex, rep->wex,
6255 rep->flags,
6256 rep->buf->i,
6257 rep->analysers);
6258
6259 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6260 return 0;
6261
6262 rep->analysers &= ~an_bit;
6263 rep->analyse_exp = TICK_ETERNITY;
6264
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6265 /* The stats applet needs to adjust the Connection header but we don't
6266 * apply any filter there.
6267 */
6268 if (unlikely(objt_applet(s->target) == &http_stats_applet))
6269 goto skip_filters;
6270
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6271 /*
6272 * We will have to evaluate the filters.
6273 * As opposed to version 1.2, now they will be evaluated in the
6274 * filters order and not in the header order. This means that
6275 * each filter has to be validated among all headers.
6276 *
6277 * Filters are tried with ->be first, then with ->fe if it is
6278 * different from ->be.
6279 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6280
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6281 cur_proxy = s->be;
6282 while (1) {
6283 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6284
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6285 /* evaluate http-response rules */
6286 if (!http_res_last_rule)
6287 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]6288
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6289 /* try headers filters */
6290 if (rule_set->rsp_exp != NULL) {
6291 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6292 return_bad_resp:
6293 if (objt_server(s->target)) {
6294 objt_server(s->target)->counters.failed_resp++;
6295 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6296 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6297 s->be->be_counters.failed_resp++;
6298 return_srv_prx_502:
6299 rep->analysers = 0;
6300 txn->status = 502;
6301 s->logs.t_data = -1; /* was not a valid response */
6302 rep->prod->flags |= SI_FL_NOLINGER;
6303 bi_erase(rep);
6304 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
6305 if (!(s->flags & SN_ERR_MASK))
6306 s->flags |= SN_ERR_PRXCOND;
6307 if (!(s->flags & SN_FINST_MASK))
6308 s->flags |= SN_FINST_H;
6309 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6310 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6311 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6312
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6313 /* has the response been denied ? */
6314 if (txn->flags & TX_SVDENY) {
6315 if (objt_server(s->target))
6316 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6317
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6318 s->be->be_counters.denied_resp++;
6319 s->fe->fe_counters.denied_resp++;
6320 if (s->listener->counters)
6321 s->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6322
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6323 goto return_srv_prx_502;
6324 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6325
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6326 /* add response headers from the rule sets in the same order */
6327 list_for_each_entry(wl, &rule_set->rsp_add, list) {
6328 if (txn->status < 200)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6329 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6330 if (wl->cond) {
6331 int ret = acl_exec_cond(wl->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
6332 ret = acl_pass(ret);
6333 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6334 ret = !ret;
6335 if (!ret)
6336 continue;
6337 }
6338 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6339 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6340 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6341
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6342 /* check whether we're already working on the frontend */
6343 if (cur_proxy == s->fe)
6344 break;
6345 cur_proxy = s->fe;
6346 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6347
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6348 /* OK that's all we can do for 1xx responses */
6349 if (unlikely(txn->status < 200))
6350 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6351
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6352 /*
6353 * Now check for a server cookie.
6354 */
6355 if (s->be->cookie_name || s->be->appsession_name || s->fe->capture_name ||
6356 (s->be->options & PR_O_CHK_CACHE))
6357 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6358
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6359 /*
6360 * Check for cache-control or pragma headers if required.
6361 */
6362 if ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC))
6363 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6364
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6365 /*
6366 * Add server cookie in the response if needed
6367 */
6368 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6369 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
6370 (!(s->flags & SN_DIRECT) ||
6371 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6372 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6373 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6374 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6375 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
6376 !(s->flags & SN_IGNORE_PRST)) {
6377 /* the server is known, it's not the one the client requested, or the
6378 * cookie's last seen date needs to be refreshed. We have to
6379 * insert a set-cookie here, except if we want to insert only on POST
6380 * requests and this one isn't. Note that servers which don't have cookies
6381 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6382 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6383 if (!objt_server(s->target)->cookie) {
6384 chunk_printf(&trash,
6385 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6386 s->be->cookie_name);
6387 }
6388 else {
6389 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]6390
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6391 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6392 /* emit last_date, which is mandatory */
6393 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6394 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6395 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6396
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6397 if (s->be->cookie_maxlife) {
6398 /* emit first_date, which is either the original one or
6399 * the current date.
6400 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6401 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6402 s30tob64(txn->cookie_first_date ?
6403 txn->cookie_first_date >> 2 :
6404 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6405 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6406 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6407 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6408 chunk_appendf(&trash, "; path=/");
6409 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6410
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6411 if (s->be->cookie_domain)
6412 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6413
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6414 if (s->be->ck_opts & PR_CK_HTTPONLY)
6415 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6416
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6417 if (s->be->ck_opts & PR_CK_SECURE)
6418 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6419
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6420 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6421 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6422
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6423 txn->flags &= ~TX_SCK_MASK;
6424 if (objt_server(s->target)->cookie && (s->flags & SN_DIRECT))
6425 /* the server did not change, only the date was updated */
6426 txn->flags |= TX_SCK_UPDATED;
6427 else
6428 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6429
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6430 /* Here, we will tell an eventual cache on the client side that we don't
6431 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6432 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6433 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6434 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6435 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6436
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6437 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6438
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6439 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6440 "Cache-control: private", 22) < 0))
6441 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6442 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6443 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6444
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6445 /*
6446 * Check if result will be cacheable with a cookie.
6447 * We'll block the response if security checks have caught
6448 * nasty things such as a cacheable cookie.
6449 */
6450 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6451 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6452 (s->be->options & PR_O_CHK_CACHE)) {
6453 /* we're in presence of a cacheable response containing
6454 * a set-cookie header. We'll block it as requested by
6455 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6456 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6457 if (objt_server(s->target))
6458 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6459
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6460 s->be->be_counters.denied_resp++;
6461 s->fe->fe_counters.denied_resp++;
6462 if (s->listener->counters)
6463 s->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6464
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6465 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6466 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6467 send_log(s->be, LOG_ALERT,
6468 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6469 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6470 goto return_srv_prx_502;
6471 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6472
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6473 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6474 /*
6475 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6476 * If an "Upgrade" token is found, the header is left untouched in order
6477 * not to have to deal with some client bugs : some of them fail an upgrade
6478 * if anything but "Upgrade" is present in the Connection header.
6479 */
6480 if (!(txn->flags & TX_HDR_CONN_UPG) &&
6481 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
6482 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6483 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6484 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6485
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6486 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6487 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6488 /* we want a keep-alive response here. Keep-alive header
6489 * required if either side is not 1.1.
6490 */
6491 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6492 want_flags |= TX_CON_KAL_SET;
6493 }
6494 else {
6495 /* we want a close response here. Close header required if
6496 * the server is 1.1, regardless of the client.
6497 */
6498 if (msg->flags & HTTP_MSGF_VER_11)
6499 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6500 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6501
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6502 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6503 http_change_connection_header(txn, msg, want_flags);
6504 }
6505
6506 skip_header_mangling:
6507 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
6508 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
6509 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6510
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6511 /* if the user wants to log as soon as possible, without counting
6512 * bytes from the server, then this is the right moment. We have
6513 * to temporarily assign bytes_out to log what we currently have.
6514 */
6515 if (!LIST_ISEMPTY(&s->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
6516 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6517 s->logs.bytes_out = txn->rsp.eoh;
6518 s->do_log(s);
6519 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6520 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6521 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6522}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6523
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6524/* This function is an analyser which forwards response body (including chunk
6525 * sizes if any). It is called as soon as we must forward, even if we forward
6526 * zero byte. The only situation where it must not be called is when we're in
6527 * tunnel mode and we want to forward till the close. It's used both to forward
6528 * remaining data and to resync after end of body. It expects the msg_state to
6529 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
6530 * 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]6531 *
6532 * It is capable of compressing response data both in content-length mode and
6533 * in chunked mode. The state machines follows different flows depending on
6534 * whether content-length and chunked modes are used, since there are no
6535 * trailers in content-length :
6536 *
6537 * chk-mode cl-mode
6538 * ,----- BODY -----.
6539 * / \
6540 * V size > 0 V chk-mode
6541 * .--> SIZE -------------> DATA -------------> CRLF
6542 * | | size == 0 | last byte |
6543 * | v final crlf v inspected |
6544 * | TRAILERS -----------> DONE |
6545 * | |
6546 * `----------------------------------------------'
6547 *
6548 * Compression only happens in the DATA state, and must be flushed in final
6549 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6550 * is performed at once on final states for all bytes parsed, or when leaving
6551 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6552 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6553int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6554{
6555 struct http_txn *txn = &s->txn;
6556 struct http_msg *msg = &s->txn.rsp;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6557 static struct buffer *tmpbuf = NULL;
6558 int compressing = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6559 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6560
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6561 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6562 return 0;
6563
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6564 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]6565 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]6566 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6567 /* Output closed while we were sending data. We must abort and
6568 * wake the other side up.
6569 */
6570 msg->msg_state = HTTP_MSG_ERROR;
6571 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6572 return 1;
6573 }
6574
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6575 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6576 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6577
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6578 if (msg->sov) {
6579 /* we have msg->sov which points to the first byte of message
6580 * body, and res->buf.p still points to the beginning of the
6581 * message. We forward the headers now, as we don't need them
6582 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6583 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6584 b_adv(res->buf, msg->sov);
6585 msg->next -= msg->sov;
6586 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6587
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6588 /* The previous analysers guarantee that the state is somewhere
6589 * between MSG_BODY and the first MSG_DATA. So msg->sol and
6590 * msg->next are always correct.
6591 */
6592 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
6593 if (msg->flags & HTTP_MSGF_TE_CHNK)
6594 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6595 else
6596 msg->msg_state = HTTP_MSG_DATA;
6597 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6598 }
6599
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6600 if (res->to_forward) {
6601 /* We can't process the buffer's contents yet */
6602 res->flags |= CF_WAKE_WRITE;
6603 goto missing_data;
6604 }
6605
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6606 if (unlikely(s->comp_algo != NULL) && msg->msg_state < HTTP_MSG_TRAILERS) {
6607 /* We need a compression buffer in the DATA state to put the
6608 * output of compressed data, and in CRLF state to let the
6609 * TRAILERS state finish the job of removing the trailing CRLF.
6610 */
6611 if (unlikely(tmpbuf == NULL)) {
6612 /* this is the first time we need the compression buffer */
6613 tmpbuf = pool_alloc2(pool2_buffer);
6614 if (tmpbuf == NULL)
6615 goto aborted_xfer; /* no memory */
6616 }
6617
6618 ret = http_compression_buffer_init(s, res->buf, tmpbuf);
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6619 if (ret < 0) {
6620 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6621 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6622 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6623 compressing = 1;
6624 }
6625
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6626 while (1) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6627 switch (msg->msg_state - HTTP_MSG_DATA) {
6628 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6629 /* we may have some pending data starting at res->buf->p */
6630 if (unlikely(s->comp_algo)) {
Willy Tarreau7f2f8d52014-04-18 00:20:14 +0200[diff] [blame]6631 ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6632 if (ret < 0)
6633 goto aborted_xfer;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6634
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6635 if (msg->chunk_len) {
6636 /* input empty or output full */
6637 if (res->buf->i > msg->next)
6638 res->flags |= CF_WAKE_WRITE;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6639 goto missing_data;
6640 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6641 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6642 else {
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6643 if (msg->chunk_len > res->buf->i - msg->next) {
6644 /* output full */
6645 res->flags |= CF_WAKE_WRITE;
6646 goto missing_data;
6647 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6648 msg->next += msg->chunk_len;
6649 msg->chunk_len = 0;
6650 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6651
6652 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6653 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6654 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6655 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6656 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6657 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6658 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6659 /* fall through for HTTP_MSG_CHUNK_CRLF */
6660
6661 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6662 /* we want the CRLF after the data */
6663
6664 ret = http_skip_chunk_crlf(msg);
6665 if (ret == 0)
6666 goto missing_data;
6667 else if (ret < 0) {
6668 if (msg->err_pos >= 0)
6669 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
6670 goto return_bad_res;
6671 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6672 /* we're in MSG_CHUNK_SIZE now, fall through */
6673
6674 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6675 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6676 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6677 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6678 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6679
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6680 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6681 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6682 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6683 else if (ret < 0) {
6684 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6685 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]6686 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6687 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6688 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6689 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6690
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6691 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6692 if (unlikely(compressing)) {
6693 /* we need to flush output contents before syncing FSMs */
6694 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6695 compressing = 0;
6696 }
6697
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6698 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6699 if (ret == 0)
6700 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6701 else if (ret < 0) {
6702 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6703 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]6704 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6705 }
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6706 /* we're in HTTP_MSG_DONE now, fall through */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6707
6708 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6709 /* other states, DONE...TUNNEL */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6710 if (unlikely(compressing)) {
6711 /* we need to flush output contents before syncing FSMs */
6712 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6713 compressing = 0;
6714 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6715
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6716 /* we may have some pending data starting at res->buf->p
6717 * such as a last chunk of data or trailers.
6718 */
6719 b_adv(res->buf, msg->next);
6720 msg->next = 0;
6721
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6722 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6723 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6724 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6725 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6726 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6727
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6728 if (http_resync_states(s)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6729 /* some state changes occurred, maybe the analyser
6730 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6731 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6732 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6733 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6734 /* response errors are most likely due to
6735 * the client aborting the transfer.
6736 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6737 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6738 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6739 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6740 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6741 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6742 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6743 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6744 }
Willy Tarreaub1982e22014-05-06 22:57:53 +0200[diff] [blame]6745
6746 /* if we received everything, we don't want to expire anymore */
6747 if (msg->msg_state == HTTP_MSG_DONE) {
6748 res->flags |= CF_READ_NOEXP;
6749 res->rex = TICK_ETERNITY;
6750 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6751 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6752 }
6753 }
6754
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6755 missing_data:
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6756 /* we may have some pending data starting at res->buf->p */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6757 if (unlikely(compressing)) {
6758 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6759 compressing = 0;
6760 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6761
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6762 if ((s->comp_algo == NULL || msg->msg_state >= HTTP_MSG_TRAILERS)) {
6763 b_adv(res->buf, msg->next);
6764 msg->next = 0;
6765 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6766 }
6767
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6768 if (res->flags & CF_SHUTW)
6769 goto aborted_xfer;
6770
6771 /* stop waiting for data if the input is closed before the end. If the
6772 * client side was already closed, it means that the client has aborted,
6773 * so we don't want to count this as a server abort. Otherwise it's a
6774 * server abort.
6775 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6776 if (res->flags & CF_SHUTR) {
Willy Tarreaub2c6a782014-04-23 20:29:01 +0200[diff] [blame]6777 if ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6778 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6779 if (!(s->flags & SN_ERR_MASK))
6780 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6781 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6782 if (objt_server(s->target))
6783 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6784 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6785 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6786
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6787 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6788 if (!s->req->analysers)
6789 goto return_bad_res;
6790
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6791 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6792 * 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]6793 * Similarly, with keep-alive on the client side, we don't want to forward a
6794 * close.
6795 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6796 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6797 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6798 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6799 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6800
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6801 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6802 * 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]6803 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6804 * modes are already handled by the stream sock layer. We must not do
6805 * this in content-length mode because it could present the MSG_MORE
6806 * flag with the last block of forwarded data, which would cause an
6807 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6808 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6809 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6810 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6811
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6812 /* the session handler will take care of timeouts and errors */
6813 return 0;
6814
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6815 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6816 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6817 if (objt_server(s->target))
6818 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6819
6820 return_bad_res_stats_ok:
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]6821 if (unlikely(compressing)) {
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6822 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]6823 compressing = 0;
6824 }
6825
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6826 /* we may have some pending data starting at res->buf->p */
6827 if (s->comp_algo == NULL) {
6828 b_adv(res->buf, msg->next);
6829 msg->next = 0;
6830 }
6831
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6832 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6833 /* don't send any error message as we're in the body */
6834 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6835 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6836 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]6837 if (objt_server(s->target))
6838 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6839
6840 if (!(s->flags & SN_ERR_MASK))
6841 s->flags |= SN_ERR_PRXCOND;
6842 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6843 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6844 return 0;
6845
6846 aborted_xfer:
Willy Tarreau6fef8ae2014-04-22 21:22:06 +0200[diff] [blame]6847 if (unlikely(compressing)) {
6848 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
6849 compressing = 0;
6850 }
6851
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6852 txn->rsp.msg_state = HTTP_MSG_ERROR;
6853 /* don't send any error message as we're in the body */
6854 stream_int_retnclose(res->cons, NULL);
6855 res->analysers = 0;
6856 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6857
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6858 s->fe->fe_counters.cli_aborts++;
6859 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6860 if (objt_server(s->target))
6861 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6862
6863 if (!(s->flags & SN_ERR_MASK))
6864 s->flags |= SN_ERR_CLICL;
6865 if (!(s->flags & SN_FINST_MASK))
6866 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6867 return 0;
6868}
6869
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6870/* Iterate the same filter through all request headers.
6871 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6872 * Since it can manage the switch to another backend, it updates the per-proxy
6873 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6874 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6875int 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]6876{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6877 char *cur_ptr, *cur_end, *cur_next;
6878 int cur_idx, old_idx, last_hdr;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6879 struct http_txn *txn = &s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6880 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6881 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6882
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6883 last_hdr = 0;
6884
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6885 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6886 old_idx = 0;
6887
6888 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6889 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6890 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6891 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6892 (exp->action == ACT_ALLOW ||
6893 exp->action == ACT_DENY ||
6894 exp->action == ACT_TARPIT))
6895 return 0;
6896
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6897 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6898 if (!cur_idx)
6899 break;
6900
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6901 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6902 cur_ptr = cur_next;
6903 cur_end = cur_ptr + cur_hdr->len;
6904 cur_next = cur_end + cur_hdr->cr + 1;
6905
6906 /* Now we have one header between cur_ptr and cur_end,
6907 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6908 */
6909
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]6910 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]6911 switch (exp->action) {
6912 case ACT_SETBE:
6913 /* It is not possible to jump a second time.
6914 * FIXME: should we return an HTTP/500 here so that
6915 * the admin knows there's a problem ?
6916 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6917 if (s->be != s->fe)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6918 break;
6919
6920 /* Swithing Proxy */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6921 session_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6922 last_hdr = 1;
6923 break;
6924
6925 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6926 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6927 last_hdr = 1;
6928 break;
6929
6930 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6931 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6932 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6933 break;
6934
6935 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6936 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6937 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6938 break;
6939
6940 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]6941 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
6942 if (trash.len < 0)
6943 return -1;
6944
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6945 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6946 /* FIXME: if the user adds a newline in the replacement, the
6947 * index will not be recalculated for now, and the new line
6948 * will not be counted as a new header.
6949 */
6950
6951 cur_end += delta;
6952 cur_next += delta;
6953 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6954 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6955 break;
6956
6957 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6958 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6959 cur_next += delta;
6960
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6961 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6962 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6963 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6964 cur_hdr->len = 0;
6965 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6966 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6967 break;
6968
6969 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6970 }
6971
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6972 /* keep the link from this header to next one in case of later
6973 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6974 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6975 old_idx = cur_idx;
6976 }
6977 return 0;
6978}
6979
6980
6981/* Apply the filter to the request line.
6982 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6983 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6984 * Since it can manage the switch to another backend, it updates the per-proxy
6985 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6986 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6987int 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]6988{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6989 char *cur_ptr, *cur_end;
6990 int done;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6991 struct http_txn *txn = &s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6992 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6993
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6994 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6995 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6996 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6997 (exp->action == ACT_ALLOW ||
6998 exp->action == ACT_DENY ||
6999 exp->action == ACT_TARPIT))
7000 return 0;
7001 else if (exp->action == ACT_REMOVE)
7002 return 0;
7003
7004 done = 0;
7005
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7006 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7007 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7008
7009 /* Now we have the request line between cur_ptr and cur_end */
7010
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]7011 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]7012 switch (exp->action) {
7013 case ACT_SETBE:
7014 /* It is not possible to jump a second time.
7015 * FIXME: should we return an HTTP/500 here so that
7016 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7017 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7018 if (s->be != s->fe)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7019 break;
7020
7021 /* Swithing Proxy */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7022 session_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7023 done = 1;
7024 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7025
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7026 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7027 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7028 done = 1;
7029 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7030
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7031 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7032 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7033 done = 1;
7034 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7035
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7036 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7037 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7038 done = 1;
7039 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7040
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7041 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7042 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7043 if (trash.len < 0)
7044 return -1;
7045
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7046 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7047 /* FIXME: if the user adds a newline in the replacement, the
7048 * index will not be recalculated for now, and the new line
7049 * will not be counted as a new header.
7050 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7051
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7052 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7053 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7054 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7055 HTTP_MSG_RQMETH,
7056 cur_ptr, cur_end + 1,
7057 NULL, NULL);
7058 if (unlikely(!cur_end))
7059 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7060
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7061 /* we have a full request and we know that we have either a CR
7062 * or an LF at <ptr>.
7063 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7064 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7065 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]7066 /* there is no point trying this regex on headers */
7067 return 1;
7068 }
7069 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7070 return done;
7071}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7072
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7073
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7074
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7075/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7076 * 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]7077 * 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]7078 * unparsable request. Since it can manage the switch to another backend, it
7079 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7080 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7081int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7082{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7083 struct http_txn *txn = &s->txn;
7084 struct hdr_exp *exp;
7085
7086 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7087 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7088
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7089 /*
7090 * The interleaving of transformations and verdicts
7091 * makes it difficult to decide to continue or stop
7092 * the evaluation.
7093 */
7094
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7095 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7096 break;
7097
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7098 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7099 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7100 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7101 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7102
7103 /* if this filter had a condition, evaluate it now and skip to
7104 * next filter if the condition does not match.
7105 */
7106 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7107 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]7108 ret = acl_pass(ret);
7109 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7110 ret = !ret;
7111
7112 if (!ret)
7113 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7114 }
7115
7116 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7117 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7118 if (unlikely(ret < 0))
7119 return -1;
7120
7121 if (likely(ret == 0)) {
7122 /* The filter did not match the request, it can be
7123 * iterated through all headers.
7124 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7125 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7126 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7127 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7128 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7129}
7130
7131
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7132
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7133/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7134 * Try to retrieve the server associated to the appsession.
7135 * If the server is found, it's assigned to the session.
7136 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7137void manage_client_side_appsession(struct session *s, const char *buf, int len) {
7138 struct http_txn *txn = &s->txn;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7139 appsess *asession = NULL;
7140 char *sessid_temp = NULL;
7141
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7142 if (len > s->be->appsession_len) {
7143 len = s->be->appsession_len;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7144 }
7145
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7146 if (s->be->options2 & PR_O2_AS_REQL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7147 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7148 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7149 /* 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]7150 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7151 }
7152
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7153 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7154 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7155 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]7156 return;
7157 }
7158
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7159 memcpy(txn->sessid, buf, len);
7160 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7161 }
7162
7163 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
7164 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7165 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]7166 return;
7167 }
7168
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7169 memcpy(sessid_temp, buf, len);
7170 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7171
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7172 asession = appsession_hash_lookup(&(s->be->htbl_proxy), sessid_temp);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7173 /* free previously allocated memory */
7174 pool_free2(apools.sessid, sessid_temp);
7175
7176 if (asession != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7177 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
7178 if (!(s->be->options2 & PR_O2_AS_REQL))
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7179 asession->request_count++;
7180
7181 if (asession->serverid != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7182 struct server *srv = s->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7183
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7184 while (srv) {
7185 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7186 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7187 (s->be->options & PR_O_PERSIST) ||
7188 (s->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7189 /* we found the server and it's usable */
7190 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7191 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7192 s->flags |= SN_DIRECT | SN_ASSIGNED;
7193 s->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]7194
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7195 break;
7196 } else {
7197 txn->flags &= ~TX_CK_MASK;
7198 txn->flags |= TX_CK_DOWN;
7199 }
7200 }
7201 srv = srv->next;
7202 }
7203 }
7204 }
7205}
7206
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7207/* Find the end of a cookie value contained between <s> and <e>. It works the
7208 * same way as with headers above except that the semi-colon also ends a token.
7209 * See RFC2965 for more information. Note that it requires a valid header to
7210 * return a valid result.
7211 */
7212char *find_cookie_value_end(char *s, const char *e)
7213{
7214 int quoted, qdpair;
7215
7216 quoted = qdpair = 0;
7217 for (; s < e; s++) {
7218 if (qdpair) qdpair = 0;
7219 else if (quoted) {
7220 if (*s == '\\') qdpair = 1;
7221 else if (*s == '"') quoted = 0;
7222 }
7223 else if (*s == '"') quoted = 1;
7224 else if (*s == ',' || *s == ';') return s;
7225 }
7226 return s;
7227}
7228
7229/* Delete a value in a header between delimiters <from> and <next> in buffer
7230 * <buf>. The number of characters displaced is returned, and the pointer to
7231 * the first delimiter is updated if required. The function tries as much as
7232 * possible to respect the following principles :
7233 * - replace <from> delimiter by the <next> one unless <from> points to a
7234 * colon, in which case <next> is simply removed
7235 * - set exactly one space character after the new first delimiter, unless
7236 * there are not enough characters in the block being moved to do so.
7237 * - remove unneeded spaces before the previous delimiter and after the new
7238 * one.
7239 *
7240 * It is the caller's responsibility to ensure that :
7241 * - <from> points to a valid delimiter or the colon ;
7242 * - <next> points to a valid delimiter or the final CR/LF ;
7243 * - there are non-space chars before <from> ;
7244 * - there is a CR/LF at or after <next>.
7245 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7246int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7247{
7248 char *prev = *from;
7249
7250 if (*prev == ':') {
7251 /* We're removing the first value, preserve the colon and add a
7252 * space if possible.
7253 */
7254 if (!http_is_crlf[(unsigned char)*next])
7255 next++;
7256 prev++;
7257 if (prev < next)
7258 *prev++ = ' ';
7259
7260 while (http_is_spht[(unsigned char)*next])
7261 next++;
7262 } else {
7263 /* Remove useless spaces before the old delimiter. */
7264 while (http_is_spht[(unsigned char)*(prev-1)])
7265 prev--;
7266 *from = prev;
7267
7268 /* copy the delimiter and if possible a space if we're
7269 * not at the end of the line.
7270 */
7271 if (!http_is_crlf[(unsigned char)*next]) {
7272 *prev++ = *next++;
7273 if (prev + 1 < next)
7274 *prev++ = ' ';
7275 while (http_is_spht[(unsigned char)*next])
7276 next++;
7277 }
7278 }
7279 return buffer_replace2(buf, prev, next, NULL, 0);
7280}
7281
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7282/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7283 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7284 * desirable to call it only when needed. This code is quite complex because
7285 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7286 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7287 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7288void manage_client_side_cookies(struct session *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7289{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7290 struct http_txn *txn = &s->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7291 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7292 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7293 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7294 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7295
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7296 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7297 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7298 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7299
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7300 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7301 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7302 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7303
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7304 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7305 hdr_beg = hdr_next;
7306 hdr_end = hdr_beg + cur_hdr->len;
7307 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7308
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7309 /* We have one full header between hdr_beg and hdr_end, and the
7310 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7311 * "Cookie:" headers.
7312 */
7313
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7314 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7315 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7316 old_idx = cur_idx;
7317 continue;
7318 }
7319
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7320 del_from = NULL; /* nothing to be deleted */
7321 preserve_hdr = 0; /* assume we may kill the whole header */
7322
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7323 /* Now look for cookies. Conforming to RFC2109, we have to support
7324 * attributes whose name begin with a '$', and associate them with
7325 * the right cookie, if we want to delete this cookie.
7326 * So there are 3 cases for each cookie read :
7327 * 1) it's a special attribute, beginning with a '$' : ignore it.
7328 * 2) it's a server id cookie that we *MAY* want to delete : save
7329 * some pointers on it (last semi-colon, beginning of cookie...)
7330 * 3) it's an application cookie : we *MAY* have to delete a previous
7331 * "special" cookie.
7332 * At the end of loop, if a "special" cookie remains, we may have to
7333 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7334 * *MUST* delete it.
7335 *
7336 * Note: RFC2965 is unclear about the processing of spaces around
7337 * the equal sign in the ATTR=VALUE form. A careful inspection of
7338 * the RFC explicitly allows spaces before it, and not within the
7339 * tokens (attrs or values). An inspection of RFC2109 allows that
7340 * too but section 10.1.3 lets one think that spaces may be allowed
7341 * after the equal sign too, resulting in some (rare) buggy
7342 * implementations trying to do that. So let's do what servers do.
7343 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7344 * allowed quoted strings in values, with any possible character
7345 * after a backslash, including control chars and delimitors, which
7346 * causes parsing to become ambiguous. Browsers also allow spaces
7347 * within values even without quotes.
7348 *
7349 * We have to keep multiple pointers in order to support cookie
7350 * removal at the beginning, middle or end of header without
7351 * corrupting the header. All of these headers are valid :
7352 *
7353 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7354 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7355 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7356 * | | | | | | | | |
7357 * | | | | | | | | hdr_end <--+
7358 * | | | | | | | +--> next
7359 * | | | | | | +----> val_end
7360 * | | | | | +-----------> val_beg
7361 * | | | | +--------------> equal
7362 * | | | +----------------> att_end
7363 * | | +---------------------> att_beg
7364 * | +--------------------------> prev
7365 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7366 */
7367
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7368 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7369 /* Iterate through all cookies on this line */
7370
7371 /* find att_beg */
7372 att_beg = prev + 1;
7373 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7374 att_beg++;
7375
7376 /* find att_end : this is the first character after the last non
7377 * space before the equal. It may be equal to hdr_end.
7378 */
7379 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7380
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7381 while (equal < hdr_end) {
7382 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7383 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7384 if (http_is_spht[(unsigned char)*equal++])
7385 continue;
7386 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7387 }
7388
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7389 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7390 * is between <att_beg> and <equal>, both may be identical.
7391 */
7392
7393 /* look for end of cookie if there is an equal sign */
7394 if (equal < hdr_end && *equal == '=') {
7395 /* look for the beginning of the value */
7396 val_beg = equal + 1;
7397 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7398 val_beg++;
7399
7400 /* find the end of the value, respecting quotes */
7401 next = find_cookie_value_end(val_beg, hdr_end);
7402
7403 /* make val_end point to the first white space or delimitor after the value */
7404 val_end = next;
7405 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7406 val_end--;
7407 } else {
7408 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7409 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7410
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7411 /* We have nothing to do with attributes beginning with '$'. However,
7412 * they will automatically be removed if a header before them is removed,
7413 * since they're supposed to be linked together.
7414 */
7415 if (*att_beg == '$')
7416 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7417
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7418 /* Ignore cookies with no equal sign */
7419 if (equal == next) {
7420 /* This is not our cookie, so we must preserve it. But if we already
7421 * scheduled another cookie for removal, we cannot remove the
7422 * complete header, but we can remove the previous block itself.
7423 */
7424 preserve_hdr = 1;
7425 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7426 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7427 val_end += delta;
7428 next += delta;
7429 hdr_end += delta;
7430 hdr_next += delta;
7431 cur_hdr->len += delta;
7432 http_msg_move_end(&txn->req, delta);
7433 prev = del_from;
7434 del_from = NULL;
7435 }
7436 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7437 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7438
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7439 /* if there are spaces around the equal sign, we need to
7440 * strip them otherwise we'll get trouble for cookie captures,
7441 * or even for rewrites. Since this happens extremely rarely,
7442 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7443 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7444 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7445 int stripped_before = 0;
7446 int stripped_after = 0;
7447
7448 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7449 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7450 equal += stripped_before;
7451 val_beg += stripped_before;
7452 }
7453
7454 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7455 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7456 val_beg += stripped_after;
7457 stripped_before += stripped_after;
7458 }
7459
7460 val_end += stripped_before;
7461 next += stripped_before;
7462 hdr_end += stripped_before;
7463 hdr_next += stripped_before;
7464 cur_hdr->len += stripped_before;
7465 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7466 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7467 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7468
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7469 /* First, let's see if we want to capture this cookie. We check
7470 * that we don't already have a client side cookie, because we
7471 * can only capture one. Also as an optimisation, we ignore
7472 * cookies shorter than the declared name.
7473 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7474 if (s->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7475 (val_end - att_beg >= s->fe->capture_namelen) &&
7476 memcmp(att_beg, s->fe->capture_name, s->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7477 int log_len = val_end - att_beg;
7478
7479 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7480 Alert("HTTP logging : out of memory.\n");
7481 } else {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7482 if (log_len > s->fe->capture_len)
7483 log_len = s->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7484 memcpy(txn->cli_cookie, att_beg, log_len);
7485 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7486 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7487 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7488
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7489 /* Persistence cookies in passive, rewrite or insert mode have the
7490 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7491 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7492 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7493 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7494 * For cookies in prefix mode, the form is :
7495 *
7496 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7497 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7498 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7499 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7500 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7501 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7502
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7503 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7504 * have the server ID between val_beg and delim, and the original cookie between
7505 * delim+1 and val_end. Otherwise, delim==val_end :
7506 *
7507 * Cookie: NAME=SRV; # in all but prefix modes
7508 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7509 * | || || | |+-> next
7510 * | || || | +--> val_end
7511 * | || || +---------> delim
7512 * | || |+------------> val_beg
7513 * | || +-------------> att_end = equal
7514 * | |+-----------------> att_beg
7515 * | +------------------> prev
7516 * +-------------------------> hdr_beg
7517 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7518
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7519 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7520 for (delim = val_beg; delim < val_end; delim++)
7521 if (*delim == COOKIE_DELIM)
7522 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7523 } else {
7524 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7525 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7526 /* Now check if the cookie contains a date field, which would
7527 * appear after a vertical bar ('|') just after the server name
7528 * and before the delimiter.
7529 */
7530 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7531 if (vbar1) {
7532 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7533 * right is the last seen date. It is a base64 encoded
7534 * 30-bit value representing the UNIX date since the
7535 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7536 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7537 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7538 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7539 if (val_end - vbar1 >= 5) {
7540 val = b64tos30(vbar1);
7541 if (val > 0)
7542 txn->cookie_last_date = val << 2;
7543 }
7544 /* look for a second vertical bar */
7545 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7546 if (vbar1 && (val_end - vbar1 > 5)) {
7547 val = b64tos30(vbar1 + 1);
7548 if (val > 0)
7549 txn->cookie_first_date = val << 2;
7550 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7551 }
7552 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7553
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7554 /* if the cookie has an expiration date and the proxy wants to check
7555 * it, then we do that now. We first check if the cookie is too old,
7556 * then only if it has expired. We detect strict overflow because the
7557 * time resolution here is not great (4 seconds). Cookies with dates
7558 * in the future are ignored if their offset is beyond one day. This
7559 * allows an admin to fix timezone issues without expiring everyone
7560 * and at the same time avoids keeping unwanted side effects for too
7561 * long.
7562 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7563 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7564 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7565 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7566 txn->flags &= ~TX_CK_MASK;
7567 txn->flags |= TX_CK_OLD;
7568 delim = val_beg; // let's pretend we have not found the cookie
7569 txn->cookie_first_date = 0;
7570 txn->cookie_last_date = 0;
7571 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7572 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7573 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7574 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7575 txn->flags &= ~TX_CK_MASK;
7576 txn->flags |= TX_CK_EXPIRED;
7577 delim = val_beg; // let's pretend we have not found the cookie
7578 txn->cookie_first_date = 0;
7579 txn->cookie_last_date = 0;
7580 }
7581
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7582 /* Here, we'll look for the first running server which supports the cookie.
7583 * This allows to share a same cookie between several servers, for example
7584 * to dedicate backup servers to specific servers only.
7585 * However, to prevent clients from sticking to cookie-less backup server
7586 * when they have incidentely learned an empty cookie, we simply ignore
7587 * empty cookies and mark them as invalid.
7588 * The same behaviour is applied when persistence must be ignored.
7589 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7590 if ((delim == val_beg) || (s->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7591 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7592
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7593 while (srv) {
7594 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7595 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7596 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7597 (s->be->options & PR_O_PERSIST) ||
7598 (s->flags & SN_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7599 /* we found the server and we can use it */
7600 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7601 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7602 s->flags |= SN_DIRECT | SN_ASSIGNED;
7603 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7604 break;
7605 } else {
7606 /* we found a server, but it's down,
7607 * mark it as such and go on in case
7608 * another one is available.
7609 */
7610 txn->flags &= ~TX_CK_MASK;
7611 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7612 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7613 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7614 srv = srv->next;
7615 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7616
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7617 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7618 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7619 txn->flags &= ~TX_CK_MASK;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7620 if ((s->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7621 txn->flags |= TX_CK_UNUSED;
7622 else
7623 txn->flags |= TX_CK_INVALID;
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 /* depending on the cookie mode, we may have to either :
7627 * - delete the complete cookie if we're in insert+indirect mode, so that
7628 * the server never sees it ;
7629 * - remove the server id from the cookie value, and tag the cookie as an
7630 * application cookie so that it does not get accidentely removed later,
7631 * if we're in cookie prefix mode
7632 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7633 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7634 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7635
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7636 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7637 val_end += delta;
7638 next += delta;
7639 hdr_end += delta;
7640 hdr_next += delta;
7641 cur_hdr->len += delta;
7642 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7643
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7644 del_from = NULL;
7645 preserve_hdr = 1; /* we want to keep this cookie */
7646 }
7647 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7648 (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]7649 del_from = prev;
7650 }
7651 } else {
7652 /* This is not our cookie, so we must preserve it. But if we already
7653 * scheduled another cookie for removal, we cannot remove the
7654 * complete header, but we can remove the previous block itself.
7655 */
7656 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7657
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7658 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7659 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7660 if (att_beg >= del_from)
7661 att_beg += delta;
7662 if (att_end >= del_from)
7663 att_end += delta;
7664 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7665 val_end += delta;
7666 next += delta;
7667 hdr_end += delta;
7668 hdr_next += delta;
7669 cur_hdr->len += delta;
7670 http_msg_move_end(&txn->req, delta);
7671 prev = del_from;
7672 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7673 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7674 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7675
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7676 /* Look for the appsession cookie unless persistence must be ignored */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7677 if (!(s->flags & SN_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7678 int cmp_len, value_len;
7679 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7680
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7681 if (s->be->options2 & PR_O2_AS_PFX) {
7682 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
7683 value_begin = att_beg + s->be->appsession_name_len;
7684 value_len = val_end - att_beg - s->be->appsession_name_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7685 } else {
7686 cmp_len = att_end - att_beg;
7687 value_begin = val_beg;
7688 value_len = val_end - val_beg;
7689 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7690
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7691 /* let's see if the cookie is our appcookie */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7692 if (cmp_len == s->be->appsession_name_len &&
7693 memcmp(att_beg, s->be->appsession_name, cmp_len) == 0) {
7694 manage_client_side_appsession(s, value_begin, value_len);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7695 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7696 }
7697
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7698 /* continue with next cookie on this header line */
7699 att_beg = next;
7700 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7701
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7702 /* There are no more cookies on this line.
7703 * We may still have one (or several) marked for deletion at the
7704 * end of the line. We must do this now in two ways :
7705 * - if some cookies must be preserved, we only delete from the
7706 * mark to the end of line ;
7707 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7708 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7709 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7710 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7711 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7712 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7713 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7714 cur_hdr->len += delta;
7715 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7716 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7717
7718 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7719 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7720 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7721 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7722 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7723 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7724 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7725 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7726 }
7727
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7728 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7729 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7730 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7731}
7732
7733
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7734/* Iterate the same filter through all response headers contained in <rtr>.
7735 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7736 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7737int 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]7738{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7739 char *cur_ptr, *cur_end, *cur_next;
7740 int cur_idx, old_idx, last_hdr;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7741 struct http_txn *txn = &s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7742 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7743 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7744
7745 last_hdr = 0;
7746
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7747 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7748 old_idx = 0;
7749
7750 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7751 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7752 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7753 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7754 (exp->action == ACT_ALLOW ||
7755 exp->action == ACT_DENY))
7756 return 0;
7757
7758 cur_idx = txn->hdr_idx.v[old_idx].next;
7759 if (!cur_idx)
7760 break;
7761
7762 cur_hdr = &txn->hdr_idx.v[cur_idx];
7763 cur_ptr = cur_next;
7764 cur_end = cur_ptr + cur_hdr->len;
7765 cur_next = cur_end + cur_hdr->cr + 1;
7766
7767 /* Now we have one header between cur_ptr and cur_end,
7768 * and the next header starts at cur_next.
7769 */
7770
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]7771 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]7772 switch (exp->action) {
7773 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7774 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7775 last_hdr = 1;
7776 break;
7777
7778 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7779 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7780 last_hdr = 1;
7781 break;
7782
7783 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7784 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7785 if (trash.len < 0)
7786 return -1;
7787
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7788 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7789 /* FIXME: if the user adds a newline in the replacement, the
7790 * index will not be recalculated for now, and the new line
7791 * will not be counted as a new header.
7792 */
7793
7794 cur_end += delta;
7795 cur_next += delta;
7796 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7797 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7798 break;
7799
7800 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7801 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7802 cur_next += delta;
7803
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7804 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7805 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7806 txn->hdr_idx.used--;
7807 cur_hdr->len = 0;
7808 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7809 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7810 break;
7811
7812 }
7813 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7814
7815 /* keep the link from this header to next one in case of later
7816 * removal of next header.
7817 */
7818 old_idx = cur_idx;
7819 }
7820 return 0;
7821}
7822
7823
7824/* Apply the filter to the status line in the response buffer <rtr>.
7825 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7826 * or -1 if a replacement resulted in an invalid status line.
7827 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7828int 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]7829{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7830 char *cur_ptr, *cur_end;
7831 int done;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7832 struct http_txn *txn = &s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7833 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7834
7835
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7836 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7837 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7838 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7839 (exp->action == ACT_ALLOW ||
7840 exp->action == ACT_DENY))
7841 return 0;
7842 else if (exp->action == ACT_REMOVE)
7843 return 0;
7844
7845 done = 0;
7846
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7847 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7848 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7849
7850 /* Now we have the status line between cur_ptr and cur_end */
7851
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]7852 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]7853 switch (exp->action) {
7854 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7855 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7856 done = 1;
7857 break;
7858
7859 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7860 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7861 done = 1;
7862 break;
7863
7864 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7865 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7866 if (trash.len < 0)
7867 return -1;
7868
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7869 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7870 /* FIXME: if the user adds a newline in the replacement, the
7871 * index will not be recalculated for now, and the new line
7872 * will not be counted as a new header.
7873 */
7874
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7875 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7876 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7877 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7878 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7879 cur_ptr, cur_end + 1,
7880 NULL, NULL);
7881 if (unlikely(!cur_end))
7882 return -1;
7883
7884 /* we have a full respnse and we know that we have either a CR
7885 * or an LF at <ptr>.
7886 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7887 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]7888 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]7889 /* there is no point trying this regex on headers */
7890 return 1;
7891 }
7892 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7893 return done;
7894}
7895
7896
7897
7898/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7899 * 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]7900 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7901 * unparsable response.
7902 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7903int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7904{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7905 struct http_txn *txn = &s->txn;
7906 struct hdr_exp *exp;
7907
7908 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7909 int ret;
7910
7911 /*
7912 * The interleaving of transformations and verdicts
7913 * makes it difficult to decide to continue or stop
7914 * the evaluation.
7915 */
7916
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7917 if (txn->flags & TX_SVDENY)
7918 break;
7919
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7920 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7921 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7922 exp->action == ACT_PASS)) {
7923 exp = exp->next;
7924 continue;
7925 }
7926
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7927 /* if this filter had a condition, evaluate it now and skip to
7928 * next filter if the condition does not match.
7929 */
7930 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7931 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]7932 ret = acl_pass(ret);
7933 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7934 ret = !ret;
7935 if (!ret)
7936 continue;
7937 }
7938
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7939 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7940 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7941 if (unlikely(ret < 0))
7942 return -1;
7943
7944 if (likely(ret == 0)) {
7945 /* The filter did not match the response, it can be
7946 * iterated through all headers.
7947 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7948 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
7949 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7950 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7951 }
7952 return 0;
7953}
7954
7955
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7956/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7957 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7958 * desirable to call it only when needed. This function is also used when we
7959 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7960 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7961void manage_server_side_cookies(struct session *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7962{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7963 struct http_txn *txn = &s->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7964 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7965 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7966 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7967 char *hdr_beg, *hdr_end, *hdr_next;
7968 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7969
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7970 /* Iterate through the headers.
7971 * we start with the start line.
7972 */
7973 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7974 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7975
7976 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7977 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7978 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7979
7980 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7981 hdr_beg = hdr_next;
7982 hdr_end = hdr_beg + cur_hdr->len;
7983 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7984
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7985 /* We have one full header between hdr_beg and hdr_end, and the
7986 * next header starts at hdr_next. We're only interested in
7987 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7988 */
7989
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7990 is_cookie2 = 0;
7991 prev = hdr_beg + 10;
7992 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7993 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7994 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7995 if (!val) {
7996 old_idx = cur_idx;
7997 continue;
7998 }
7999 is_cookie2 = 1;
8000 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8001 }
8002
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8003 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
8004 * <prev> points to the colon.
8005 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8006 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8007
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8008 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
8009 * check-cache is enabled) and we are not interested in checking
8010 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8011 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8012 if (s->be->cookie_name == NULL &&
8013 s->be->appsession_name == NULL &&
8014 s->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8015 return;
8016
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8017 /* OK so now we know we have to process this response cookie.
8018 * The format of the Set-Cookie header is slightly different
8019 * from the format of the Cookie header in that it does not
8020 * support the comma as a cookie delimiter (thus the header
8021 * cannot be folded) because the Expires attribute described in
8022 * the original Netscape's spec may contain an unquoted date
8023 * with a comma inside. We have to live with this because
8024 * many browsers don't support Max-Age and some browsers don't
8025 * support quoted strings. However the Set-Cookie2 header is
8026 * clean.
8027 *
8028 * We have to keep multiple pointers in order to support cookie
8029 * removal at the beginning, middle or end of header without
8030 * corrupting the header (in case of set-cookie2). A special
8031 * pointer, <scav> points to the beginning of the set-cookie-av
8032 * fields after the first semi-colon. The <next> pointer points
8033 * either to the end of line (set-cookie) or next unquoted comma
8034 * (set-cookie2). All of these headers are valid :
8035 *
8036 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8037 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8038 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8039 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8040 * | | | | | | | | | |
8041 * | | | | | | | | +-> next hdr_end <--+
8042 * | | | | | | | +------------> scav
8043 * | | | | | | +--------------> val_end
8044 * | | | | | +--------------------> val_beg
8045 * | | | | +----------------------> equal
8046 * | | | +------------------------> att_end
8047 * | | +----------------------------> att_beg
8048 * | +------------------------------> prev
8049 * +-----------------------------------------> hdr_beg
8050 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8051
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8052 for (; prev < hdr_end; prev = next) {
8053 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8054
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8055 /* find att_beg */
8056 att_beg = prev + 1;
8057 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8058 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8059
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8060 /* find att_end : this is the first character after the last non
8061 * space before the equal. It may be equal to hdr_end.
8062 */
8063 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8064
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8065 while (equal < hdr_end) {
8066 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8067 break;
8068 if (http_is_spht[(unsigned char)*equal++])
8069 continue;
8070 att_end = equal;
8071 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8072
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8073 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8074 * is between <att_beg> and <equal>, both may be identical.
8075 */
8076
8077 /* look for end of cookie if there is an equal sign */
8078 if (equal < hdr_end && *equal == '=') {
8079 /* look for the beginning of the value */
8080 val_beg = equal + 1;
8081 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8082 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8083
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8084 /* find the end of the value, respecting quotes */
8085 next = find_cookie_value_end(val_beg, hdr_end);
8086
8087 /* make val_end point to the first white space or delimitor after the value */
8088 val_end = next;
8089 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8090 val_end--;
8091 } else {
8092 /* <equal> points to next comma, semi-colon or EOL */
8093 val_beg = val_end = next = equal;
8094 }
8095
8096 if (next < hdr_end) {
8097 /* Set-Cookie2 supports multiple cookies, and <next> points to
8098 * a colon or semi-colon before the end. So skip all attr-value
8099 * pairs and look for the next comma. For Set-Cookie, since
8100 * commas are permitted in values, skip to the end.
8101 */
8102 if (is_cookie2)
8103 next = find_hdr_value_end(next, hdr_end);
8104 else
8105 next = hdr_end;
8106 }
8107
8108 /* Now everything is as on the diagram above */
8109
8110 /* Ignore cookies with no equal sign */
8111 if (equal == val_end)
8112 continue;
8113
8114 /* If there are spaces around the equal sign, we need to
8115 * strip them otherwise we'll get trouble for cookie captures,
8116 * or even for rewrites. Since this happens extremely rarely,
8117 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8118 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8119 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8120 int stripped_before = 0;
8121 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8122
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8123 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8124 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8125 equal += stripped_before;
8126 val_beg += stripped_before;
8127 }
8128
8129 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8130 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8131 val_beg += stripped_after;
8132 stripped_before += stripped_after;
8133 }
8134
8135 val_end += stripped_before;
8136 next += stripped_before;
8137 hdr_end += stripped_before;
8138 hdr_next += stripped_before;
8139 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8140 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8141 }
8142
8143 /* First, let's see if we want to capture this cookie. We check
8144 * that we don't already have a server side cookie, because we
8145 * can only capture one. Also as an optimisation, we ignore
8146 * cookies shorter than the declared name.
8147 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8148 if (s->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8149 txn->srv_cookie == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8150 (val_end - att_beg >= s->fe->capture_namelen) &&
8151 memcmp(att_beg, s->fe->capture_name, s->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8152 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8153 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8154 Alert("HTTP logging : out of memory.\n");
8155 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8156 else {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8157 if (log_len > s->fe->capture_len)
8158 log_len = s->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8159 memcpy(txn->srv_cookie, att_beg, log_len);
8160 txn->srv_cookie[log_len] = 0;
8161 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8162 }
8163
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8164 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8165 /* now check if we need to process it for persistence */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8166 if (!(s->flags & SN_IGNORE_PRST) &&
8167 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8168 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8169 /* assume passive cookie by default */
8170 txn->flags &= ~TX_SCK_MASK;
8171 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8172
8173 /* If the cookie is in insert mode on a known server, we'll delete
8174 * this occurrence because we'll insert another one later.
8175 * 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]8176 * a direct access.
8177 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8178 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8179 /* The "preserve" flag was set, we don't want to touch the
8180 * server's cookie.
8181 */
8182 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8183 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
8184 ((s->flags & SN_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8185 /* this cookie must be deleted */
8186 if (*prev == ':' && next == hdr_end) {
8187 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8188 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8189 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8190 txn->hdr_idx.used--;
8191 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8192 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8193 hdr_next += delta;
8194 http_msg_move_end(&txn->rsp, delta);
8195 /* note: while both invalid now, <next> and <hdr_end>
8196 * are still equal, so the for() will stop as expected.
8197 */
8198 } else {
8199 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8200 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8201 next = prev;
8202 hdr_end += delta;
8203 hdr_next += delta;
8204 cur_hdr->len += delta;
8205 http_msg_move_end(&txn->rsp, delta);
8206 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8207 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8208 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8209 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8210 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8211 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8212 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8213 * with this server since we know it.
8214 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8215 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8216 next += delta;
8217 hdr_end += delta;
8218 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8219 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8220 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8221
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8222 txn->flags &= ~TX_SCK_MASK;
8223 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8224 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8225 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8226 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8227 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8228 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8229 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8230 next += delta;
8231 hdr_end += delta;
8232 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8233 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8234 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8235
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8236 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8237 txn->flags &= ~TX_SCK_MASK;
8238 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8239 }
8240 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]8241 /* 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]8242 else if (!(s->flags & SN_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8243 int cmp_len, value_len;
8244 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8245
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8246 if (s->be->options2 & PR_O2_AS_PFX) {
8247 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
8248 value_begin = att_beg + s->be->appsession_name_len;
8249 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]8250 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8251 cmp_len = att_end - att_beg;
8252 value_begin = val_beg;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8253 value_len = MIN(s->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8254 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8255
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8256 if ((cmp_len == s->be->appsession_name_len) &&
8257 (memcmp(att_beg, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8258 /* free a possibly previously allocated memory */
8259 pool_free2(apools.sessid, txn->sessid);
8260
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8261 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8262 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8263 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8264 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]8265 return;
8266 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8267 memcpy(txn->sessid, value_begin, value_len);
8268 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8269 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8270 }
8271 /* that's done for this cookie, check the next one on the same
8272 * line when next != hdr_end (only if is_cookie2).
8273 */
8274 }
8275 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8276 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8277 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8278
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8279 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8280 appsess *asession = NULL;
8281 /* only do insert, if lookup fails */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8282 asession = appsession_hash_lookup(&(s->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8283 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]8284 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8285 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
8286 Alert("Not enough Memory process_srv():asession:calloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8287 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8288 return;
8289 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8290 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
8291
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8292 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
8293 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8294 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8295 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8296 return;
8297 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8298 memcpy(asession->sessid, txn->sessid, s->be->appsession_len);
8299 asession->sessid[s->be->appsession_len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8300
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8301 server_id_len = strlen(objt_server(s->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8302 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8303 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8304 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8305 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8306 return;
8307 }
8308 asession->serverid[0] = '\0';
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8309 memcpy(asession->serverid, objt_server(s->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8310
8311 asession->request_count = 0;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8312 appsession_hash_insert(&(s->be->htbl_proxy), asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8313 }
8314
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8315 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8316 asession->request_count++;
8317 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8318}
8319
8320
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8321/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8322 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8323 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8324void check_response_for_cacheability(struct session *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8325{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8326 struct http_txn *txn = &s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8327 char *p1, *p2;
8328
8329 char *cur_ptr, *cur_end, *cur_next;
8330 int cur_idx;
8331
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8332 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8333 return;
8334
8335 /* Iterate through the headers.
8336 * we start with the start line.
8337 */
8338 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8339 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8340
8341 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8342 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8343 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8344
8345 cur_hdr = &txn->hdr_idx.v[cur_idx];
8346 cur_ptr = cur_next;
8347 cur_end = cur_ptr + cur_hdr->len;
8348 cur_next = cur_end + cur_hdr->cr + 1;
8349
8350 /* We have one full header between cur_ptr and cur_end, and the
8351 * next header starts at cur_next. We're only interested in
8352 * "Cookie:" headers.
8353 */
8354
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8355 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8356 if (val) {
8357 if ((cur_end - (cur_ptr + val) >= 8) &&
8358 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8359 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8360 return;
8361 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8362 }
8363
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8364 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8365 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8366 continue;
8367
8368 /* OK, right now we know we have a cache-control header at cur_ptr */
8369
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8370 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8371
8372 if (p1 >= cur_end) /* no more info */
8373 continue;
8374
8375 /* p1 is at the beginning of the value */
8376 p2 = p1;
8377
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8378 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8379 p2++;
8380
8381 /* we have a complete value between p1 and p2 */
8382 if (p2 < cur_end && *p2 == '=') {
8383 /* we have something of the form no-cache="set-cookie" */
8384 if ((cur_end - p1 >= 21) &&
8385 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8386 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8387 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8388 continue;
8389 }
8390
8391 /* OK, so we know that either p2 points to the end of string or to a comma */
8392 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8393 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8394 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8395 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8396 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8397 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8398 return;
8399 }
8400
8401 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8402 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8403 continue;
8404 }
8405 }
8406}
8407
8408
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8409/*
8410 * Try to retrieve a known appsession in the URI, then the associated server.
8411 * If the server is found, it's assigned to the session.
8412 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8413void get_srv_from_appsession(struct session *s, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8414{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8415 char *end_params, *first_param, *cur_param, *next_param;
8416 char separator;
8417 int value_len;
8418
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8419 int mode = s->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8420
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8421 if (s->be->appsession_name == NULL ||
8422 (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]8423 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8424 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8425
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8426 first_param = NULL;
8427 switch (mode) {
8428 case PR_O2_AS_M_PP:
8429 first_param = memchr(begin, ';', len);
8430 break;
8431 case PR_O2_AS_M_QS:
8432 first_param = memchr(begin, '?', len);
8433 break;
8434 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8435
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8436 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8437 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8438 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8439
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8440 switch (mode) {
8441 case PR_O2_AS_M_PP:
8442 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
8443 end_params = (char *) begin + len;
8444 }
8445 separator = ';';
8446 break;
8447 case PR_O2_AS_M_QS:
8448 end_params = (char *) begin + len;
8449 separator = '&';
8450 break;
8451 default:
8452 /* unknown mode, shouldn't happen */
8453 return;
8454 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8455
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8456 cur_param = next_param = end_params;
8457 while (cur_param > first_param) {
8458 cur_param--;
8459 if ((cur_param[0] == separator) || (cur_param == first_param)) {
8460 /* let's see if this is the appsession parameter */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8461 if ((cur_param + s->be->appsession_name_len + 1 < next_param) &&
8462 ((s->be->options2 & PR_O2_AS_PFX) || cur_param[s->be->appsession_name_len + 1] == '=') &&
8463 (strncasecmp(cur_param + 1, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8464 /* Cool... it's the right one */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8465 cur_param += s->be->appsession_name_len + (s->be->options2 & PR_O2_AS_PFX ? 1 : 2);
8466 value_len = MIN(s->be->appsession_len, next_param - cur_param);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8467 if (value_len > 0) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8468 manage_client_side_appsession(s, cur_param, value_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8469 }
8470 break;
8471 }
8472 next_param = cur_param;
8473 }
8474 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8475#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]8476 Alert("get_srv_from_appsession\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8477 appsession_hash_dump(&(s->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8478#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8479}
8480
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8481/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8482 * 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]8483 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8484 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8485 * 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]8486 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8487 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8488 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8489 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8490int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8491{
8492 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8493 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8494 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8495
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8496 if (!uri_auth)
8497 return 0;
8498
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8499 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]8500 return 0;
8501
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8502 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8503 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8504 return 0;
8505
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8506 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8507 return 0;
8508
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8509 return 1;
8510}
8511
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8512/*
8513 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8514 * By default it tries to report the error position as msg->err_pos. However if
8515 * this one is not set, it will then report msg->next, which is the last known
8516 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8517 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8518 */
8519void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8520 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8521 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8522{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8523 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8524 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8525
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8526 es->len = MIN(chn->buf->i, sizeof(es->buf));
8527 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8528 len1 = MIN(len1, es->len);
8529 len2 = es->len - len1; /* remaining data if buffer wraps */
8530
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8531 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8532 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8533 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8534
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8535 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8536 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8537 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8538 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8539
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8540 es->when = date; // user-visible date
8541 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8542 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8543 es->oe = other_end;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8544 if (objt_conn(s->req->prod->end))
8545 es->src = __objt_conn(s->req->prod->end)->addr.from;
8546 else
8547 memset(&es->src, 0, sizeof(es->src));
8548
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8549 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8550 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8551 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8552 es->s_flags = s->flags;
8553 es->t_flags = s->txn.flags;
8554 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8555 es->b_out = chn->buf->o;
8556 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8557 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8558 es->m_clen = msg->chunk_len;
8559 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8560}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8561
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8562/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8563 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8564 * performed over the whole headers. Otherwise it must contain a valid header
8565 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8566 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8567 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8568 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8569 * -1. The value fetch stops at commas, so this function is suited for use with
8570 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8571 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8572 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8573unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8574 struct hdr_idx *idx, int occ,
8575 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8576{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8577 struct hdr_ctx local_ctx;
8578 char *ptr_hist[MAX_HDR_HISTORY];
8579 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8580 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8581 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8582
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8583 if (!ctx) {
8584 local_ctx.idx = 0;
8585 ctx = &local_ctx;
8586 }
8587
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8588 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8589 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8590 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8591 occ--;
8592 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8593 *vptr = ctx->line + ctx->val;
8594 *vlen = ctx->vlen;
8595 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8596 }
8597 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8598 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8599 }
8600
8601 /* negative occurrence, we scan all the list then walk back */
8602 if (-occ > MAX_HDR_HISTORY)
8603 return 0;
8604
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8605 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8606 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8607 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8608 len_hist[hist_ptr] = ctx->vlen;
8609 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8610 hist_ptr = 0;
8611 found++;
8612 }
8613 if (-occ > found)
8614 return 0;
8615 /* 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]8616 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8617 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8618 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8619 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8620 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8621 if (hist_ptr >= MAX_HDR_HISTORY)
8622 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8623 *vptr = ptr_hist[hist_ptr];
8624 *vlen = len_hist[hist_ptr];
8625 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8626}
8627
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8628/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8629 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8630 * performed over the whole headers. Otherwise it must contain a valid header
8631 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8632 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8633 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8634 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8635 * -1. This function differs from http_get_hdr() in that it only returns full
8636 * line header values and does not stop at commas.
8637 * The return value is 0 if nothing was found, or non-zero otherwise.
8638 */
8639unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8640 struct hdr_idx *idx, int occ,
8641 struct hdr_ctx *ctx, char **vptr, int *vlen)
8642{
8643 struct hdr_ctx local_ctx;
8644 char *ptr_hist[MAX_HDR_HISTORY];
8645 int len_hist[MAX_HDR_HISTORY];
8646 unsigned int hist_ptr;
8647 int found;
8648
8649 if (!ctx) {
8650 local_ctx.idx = 0;
8651 ctx = &local_ctx;
8652 }
8653
8654 if (occ >= 0) {
8655 /* search from the beginning */
8656 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8657 occ--;
8658 if (occ <= 0) {
8659 *vptr = ctx->line + ctx->val;
8660 *vlen = ctx->vlen;
8661 return 1;
8662 }
8663 }
8664 return 0;
8665 }
8666
8667 /* negative occurrence, we scan all the list then walk back */
8668 if (-occ > MAX_HDR_HISTORY)
8669 return 0;
8670
8671 found = hist_ptr = 0;
8672 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8673 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8674 len_hist[hist_ptr] = ctx->vlen;
8675 if (++hist_ptr >= MAX_HDR_HISTORY)
8676 hist_ptr = 0;
8677 found++;
8678 }
8679 if (-occ > found)
8680 return 0;
8681 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8682 * find occurrence -occ, so we have to check [hist_ptr+occ].
8683 */
8684 hist_ptr += occ;
8685 if (hist_ptr >= MAX_HDR_HISTORY)
8686 hist_ptr -= MAX_HDR_HISTORY;
8687 *vptr = ptr_hist[hist_ptr];
8688 *vlen = len_hist[hist_ptr];
8689 return 1;
8690}
8691
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8692/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8693 * Print a debug line with a header. Always stop at the first CR or LF char,
8694 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8695 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8696 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8697void debug_hdr(const char *dir, struct session *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8698{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8699 int max;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8700 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8701 dir,
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8702 objt_conn(s->req->prod->end) ? (unsigned short)objt_conn(s->req->prod->end)->t.sock.fd : -1,
8703 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]8704
8705 for (max = 0; start + max < end; max++)
8706 if (start[max] == '\r' || start[max] == '\n')
8707 break;
8708
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8709 UBOUND(max, trash.size - trash.len - 3);
8710 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8711 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8712 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8713}
8714
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8715/*
8716 * Initialize a new HTTP transaction for session <s>. It is assumed that all
8717 * the required fields are properly allocated and that we only need to (re)init
8718 * them. This should be used before processing any new request.
8719 */
8720void http_init_txn(struct session *s)
8721{
8722 struct http_txn *txn = &s->txn;
8723 struct proxy *fe = s->fe;
8724
8725 txn->flags = 0;
8726 txn->status = -1;
8727
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8728 txn->cookie_first_date = 0;
8729 txn->cookie_last_date = 0;
8730
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8731 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8732 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8733 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8734 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8735 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8736 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8737 txn->req.chunk_len = 0LL;
8738 txn->req.body_len = 0LL;
8739 txn->rsp.chunk_len = 0LL;
8740 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8741 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8742 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8743 txn->req.chn = s->req;
8744 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8745
8746 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8747
8748 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8749 if (fe->options2 & PR_O2_REQBUG_OK)
8750 txn->req.err_pos = -1; /* let buggy requests pass */
8751
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8752 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8753 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8754
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8755 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8756 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8757
8758 if (txn->hdr_idx.v)
8759 hdr_idx_init(&txn->hdr_idx);
8760}
8761
8762/* to be used at the end of a transaction */
8763void http_end_txn(struct session *s)
8764{
8765 struct http_txn *txn = &s->txn;
8766
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]8767 /* release any possible compression context */
8768 if (s->flags & SN_COMP_READY)
8769 s->comp_algo->end(&s->comp_ctx);
8770 s->comp_algo = NULL;
8771 s->flags &= ~SN_COMP_READY;
8772
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8773 /* these ones will have been dynamically allocated */
8774 pool_free2(pool2_requri, txn->uri);
8775 pool_free2(pool2_capture, txn->cli_cookie);
8776 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8777 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8778 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8779
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8780 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8781 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8782 txn->uri = NULL;
8783 txn->srv_cookie = NULL;
8784 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8785
8786 if (txn->req.cap) {
8787 struct cap_hdr *h;
8788 for (h = s->fe->req_cap; h; h = h->next)
8789 pool_free2(h->pool, txn->req.cap[h->index]);
8790 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8791 }
8792
8793 if (txn->rsp.cap) {
8794 struct cap_hdr *h;
8795 for (h = s->fe->rsp_cap; h; h = h->next)
8796 pool_free2(h->pool, txn->rsp.cap[h->index]);
8797 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8798 }
8799
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8800}
8801
8802/* to be used at the end of a transaction to prepare a new one */
8803void http_reset_txn(struct session *s)
8804{
8805 http_end_txn(s);
8806 http_init_txn(s);
8807
8808 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8809 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8810 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8811 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8812 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8813 /* re-init store persistence */
8814 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8815 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8816
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8817 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8818
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8819 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8820
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8821 /* We must trim any excess data from the response buffer, because we
8822 * may have blocked an invalid response from a server that we don't
8823 * want to accidentely forward once we disable the analysers, nor do
8824 * we want those data to come along with next response. A typical
8825 * example of such data would be from a buggy server responding to
8826 * a HEAD with some data, or sending more than the advertised
8827 * content-length.
8828 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8829 if (unlikely(s->rep->buf->i))
8830 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8831
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8832 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8833 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8834
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8835 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8836 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8837
8838 s->req->rex = TICK_ETERNITY;
8839 s->req->wex = TICK_ETERNITY;
8840 s->req->analyse_exp = TICK_ETERNITY;
8841 s->rep->rex = TICK_ETERNITY;
8842 s->rep->wex = TICK_ETERNITY;
8843 s->rep->analyse_exp = TICK_ETERNITY;
8844}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8845
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8846void free_http_res_rules(struct list *r)
8847{
8848 struct http_res_rule *tr, *pr;
8849
8850 list_for_each_entry_safe(pr, tr, r, list) {
8851 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8852 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8853 free(pr);
8854 }
8855}
8856
8857void free_http_req_rules(struct list *r)
8858{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8859 struct http_req_rule *tr, *pr;
8860
8861 list_for_each_entry_safe(pr, tr, r, list) {
8862 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8863 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8864 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8865
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8866 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8867 free(pr);
8868 }
8869}
8870
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8871/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8872struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8873{
8874 struct http_req_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]8875 struct http_req_action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8876 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8877 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8878
8879 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8880 if (!rule) {
8881 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8882 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8883 }
8884
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8885 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8886 rule->action = HTTP_REQ_ACT_ALLOW;
8887 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]8888 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8889 rule->action = HTTP_REQ_ACT_DENY;
8890 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8891 } else if (!strcmp(args[0], "tarpit")) {
8892 rule->action = HTTP_REQ_ACT_TARPIT;
8893 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8894 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8895 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8896 cur_arg = 1;
8897
8898 while(*args[cur_arg]) {
8899 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8900 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8901 cur_arg+=2;
8902 continue;
8903 } else
8904 break;
8905 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8906 } else if (!strcmp(args[0], "set-nice")) {
8907 rule->action = HTTP_REQ_ACT_SET_NICE;
8908 cur_arg = 1;
8909
8910 if (!*args[cur_arg] ||
8911 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8912 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8913 file, linenum, args[0]);
8914 goto out_err;
8915 }
8916 rule->arg.nice = atoi(args[cur_arg]);
8917 if (rule->arg.nice < -1024)
8918 rule->arg.nice = -1024;
8919 else if (rule->arg.nice > 1024)
8920 rule->arg.nice = 1024;
8921 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8922 } else if (!strcmp(args[0], "set-tos")) {
8923#ifdef IP_TOS
8924 char *err;
8925 rule->action = HTTP_REQ_ACT_SET_TOS;
8926 cur_arg = 1;
8927
8928 if (!*args[cur_arg] ||
8929 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8930 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8931 file, linenum, args[0]);
8932 goto out_err;
8933 }
8934
8935 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8936 if (err && *err != '\0') {
8937 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8938 file, linenum, err, args[0]);
8939 goto out_err;
8940 }
8941 cur_arg++;
8942#else
8943 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8944 goto out_err;
8945#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8946 } else if (!strcmp(args[0], "set-mark")) {
8947#ifdef SO_MARK
8948 char *err;
8949 rule->action = HTTP_REQ_ACT_SET_MARK;
8950 cur_arg = 1;
8951
8952 if (!*args[cur_arg] ||
8953 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8954 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8955 file, linenum, args[0]);
8956 goto out_err;
8957 }
8958
8959 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8960 if (err && *err != '\0') {
8961 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8962 file, linenum, err, args[0]);
8963 goto out_err;
8964 }
8965 cur_arg++;
8966 global.last_checks |= LSTCHK_NETADM;
8967#else
8968 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8969 goto out_err;
8970#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8971 } else if (!strcmp(args[0], "set-log-level")) {
8972 rule->action = HTTP_REQ_ACT_SET_LOGL;
8973 cur_arg = 1;
8974
8975 if (!*args[cur_arg] ||
8976 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8977 bad_log_level:
8978 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8979 file, linenum, args[0]);
8980 goto out_err;
8981 }
8982 if (strcmp(args[cur_arg], "silent") == 0)
8983 rule->arg.loglevel = -1;
8984 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8985 goto bad_log_level;
8986 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8987 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8988 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8989 cur_arg = 1;
8990
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8991 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8992 (*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]8993 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8994 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8995 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8996 }
8997
8998 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8999 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9000 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]9001
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9002 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9003 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]9004 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9005 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9006 free(proxy->conf.lfs_file);
9007 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9008 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]9009 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9010 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
9011 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]9012 cur_arg = 1;
9013
9014 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
9015 (*args[cur_arg+3] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9016 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9017 file, linenum, args[0]);
9018 goto out_err;
9019 }
9020
9021 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9022 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9023 LIST_INIT(&rule->arg.hdr_add.fmt);
9024
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9025 error = NULL;
9026 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9027 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9028 args[cur_arg + 1], error);
9029 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9030 goto out_err;
9031 }
9032
9033 proxy->conf.args.ctx = ARGC_HRQ;
9034 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9035 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9036 file, linenum);
9037
9038 free(proxy->conf.lfs_file);
9039 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9040 proxy->conf.lfs_line = proxy->conf.args.line;
9041 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9042 } else if (strcmp(args[0], "del-header") == 0) {
9043 rule->action = HTTP_REQ_ACT_DEL_HDR;
9044 cur_arg = 1;
9045
9046 if (!*args[cur_arg] ||
9047 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9048 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9049 file, linenum, args[0]);
9050 goto out_err;
9051 }
9052
9053 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9054 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9055
9056 proxy->conf.args.ctx = ARGC_HRQ;
9057 free(proxy->conf.lfs_file);
9058 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9059 proxy->conf.lfs_line = proxy->conf.args.line;
9060 cur_arg += 1;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9061 } else if (strcmp(args[0], "redirect") == 0) {
9062 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9063 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9064
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9065 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]9066 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9067 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9068 goto out_err;
9069 }
9070
9071 /* this redirect rule might already contain a parsed condition which
9072 * we'll pass to the http-request rule.
9073 */
9074 rule->action = HTTP_REQ_ACT_REDIR;
9075 rule->arg.redir = redir;
9076 rule->cond = redir->cond;
9077 redir->cond = NULL;
9078 cur_arg = 2;
9079 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9080 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9081 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9082 rule->action = HTTP_REQ_ACT_ADD_ACL;
9083 /*
9084 * '+ 8' for 'add-acl('
9085 * '- 9' for 'add-acl(' + trailing ')'
9086 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9087 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9088
9089 cur_arg = 1;
9090
9091 if (!*args[cur_arg] ||
9092 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9093 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9094 file, linenum, args[0]);
9095 goto out_err;
9096 }
9097
9098 LIST_INIT(&rule->arg.map.key);
9099 proxy->conf.args.ctx = ARGC_HRQ;
9100 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9101 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9102 file, linenum);
9103 free(proxy->conf.lfs_file);
9104 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9105 proxy->conf.lfs_line = proxy->conf.args.line;
9106 cur_arg += 1;
9107 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9108 /* http-request del-acl(<reference (acl name)>) <key pattern> */
9109 rule->action = HTTP_REQ_ACT_DEL_ACL;
9110 /*
9111 * '+ 8' for 'del-acl('
9112 * '- 9' for 'del-acl(' + trailing ')'
9113 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9114 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9115
9116 cur_arg = 1;
9117
9118 if (!*args[cur_arg] ||
9119 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9120 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9121 file, linenum, args[0]);
9122 goto out_err;
9123 }
9124
9125 LIST_INIT(&rule->arg.map.key);
9126 proxy->conf.args.ctx = ARGC_HRQ;
9127 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9128 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9129 file, linenum);
9130 free(proxy->conf.lfs_file);
9131 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9132 proxy->conf.lfs_line = proxy->conf.args.line;
9133 cur_arg += 1;
9134 } else if (strncmp(args[0], "del-map", 7) == 0) {
9135 /* http-request del-map(<reference (map name)>) <key pattern> */
9136 rule->action = HTTP_REQ_ACT_DEL_MAP;
9137 /*
9138 * '+ 8' for 'del-map('
9139 * '- 9' for 'del-map(' + trailing ')'
9140 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9141 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9142
9143 cur_arg = 1;
9144
9145 if (!*args[cur_arg] ||
9146 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9147 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9148 file, linenum, args[0]);
9149 goto out_err;
9150 }
9151
9152 LIST_INIT(&rule->arg.map.key);
9153 proxy->conf.args.ctx = ARGC_HRQ;
9154 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9155 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9156 file, linenum);
9157 free(proxy->conf.lfs_file);
9158 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9159 proxy->conf.lfs_line = proxy->conf.args.line;
9160 cur_arg += 1;
9161 } else if (strncmp(args[0], "set-map", 7) == 0) {
9162 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
9163 rule->action = HTTP_REQ_ACT_SET_MAP;
9164 /*
9165 * '+ 8' for 'set-map('
9166 * '- 9' for 'set-map(' + trailing ')'
9167 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9168 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9169
9170 cur_arg = 1;
9171
9172 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9173 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9174 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9175 file, linenum, args[0]);
9176 goto out_err;
9177 }
9178
9179 LIST_INIT(&rule->arg.map.key);
9180 LIST_INIT(&rule->arg.map.value);
9181 proxy->conf.args.ctx = ARGC_HRQ;
9182
9183 /* key pattern */
9184 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9185 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9186 file, linenum);
9187
9188 /* value pattern */
9189 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9190 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9191 file, linenum);
9192 free(proxy->conf.lfs_file);
9193 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9194 proxy->conf.lfs_line = proxy->conf.args.line;
9195
9196 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9197 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9198 char *errmsg = NULL;
9199 cur_arg = 1;
9200 /* try in the module list */
9201 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9202 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9203 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9204 free(errmsg);
9205 goto out_err;
9206 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9207 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9208 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]9209 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9210 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9211 }
9212
9213 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9214 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9215 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9216
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9217 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9218 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9219 file, linenum, args[0], errmsg);
9220 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9221 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9222 }
9223 rule->cond = cond;
9224 }
9225 else if (*args[cur_arg]) {
9226 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9227 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9228 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9229 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9230 }
9231
9232 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9233 out_err:
9234 free(rule);
9235 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9236}
9237
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9238/* parse an "http-respose" rule */
9239struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9240{
9241 struct http_res_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9242 struct http_res_action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9243 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9244 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9245
9246 rule = calloc(1, sizeof(*rule));
9247 if (!rule) {
9248 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9249 goto out_err;
9250 }
9251
9252 if (!strcmp(args[0], "allow")) {
9253 rule->action = HTTP_RES_ACT_ALLOW;
9254 cur_arg = 1;
9255 } else if (!strcmp(args[0], "deny")) {
9256 rule->action = HTTP_RES_ACT_DENY;
9257 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9258 } else if (!strcmp(args[0], "set-nice")) {
9259 rule->action = HTTP_RES_ACT_SET_NICE;
9260 cur_arg = 1;
9261
9262 if (!*args[cur_arg] ||
9263 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9264 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9265 file, linenum, args[0]);
9266 goto out_err;
9267 }
9268 rule->arg.nice = atoi(args[cur_arg]);
9269 if (rule->arg.nice < -1024)
9270 rule->arg.nice = -1024;
9271 else if (rule->arg.nice > 1024)
9272 rule->arg.nice = 1024;
9273 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9274 } else if (!strcmp(args[0], "set-tos")) {
9275#ifdef IP_TOS
9276 char *err;
9277 rule->action = HTTP_RES_ACT_SET_TOS;
9278 cur_arg = 1;
9279
9280 if (!*args[cur_arg] ||
9281 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9282 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9283 file, linenum, args[0]);
9284 goto out_err;
9285 }
9286
9287 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9288 if (err && *err != '\0') {
9289 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9290 file, linenum, err, args[0]);
9291 goto out_err;
9292 }
9293 cur_arg++;
9294#else
9295 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9296 goto out_err;
9297#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9298 } else if (!strcmp(args[0], "set-mark")) {
9299#ifdef SO_MARK
9300 char *err;
9301 rule->action = HTTP_RES_ACT_SET_MARK;
9302 cur_arg = 1;
9303
9304 if (!*args[cur_arg] ||
9305 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9306 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9307 file, linenum, args[0]);
9308 goto out_err;
9309 }
9310
9311 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9312 if (err && *err != '\0') {
9313 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9314 file, linenum, err, args[0]);
9315 goto out_err;
9316 }
9317 cur_arg++;
9318 global.last_checks |= LSTCHK_NETADM;
9319#else
9320 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9321 goto out_err;
9322#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9323 } else if (!strcmp(args[0], "set-log-level")) {
9324 rule->action = HTTP_RES_ACT_SET_LOGL;
9325 cur_arg = 1;
9326
9327 if (!*args[cur_arg] ||
9328 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9329 bad_log_level:
9330 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9331 file, linenum, args[0]);
9332 goto out_err;
9333 }
9334 if (strcmp(args[cur_arg], "silent") == 0)
9335 rule->arg.loglevel = -1;
9336 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9337 goto bad_log_level;
9338 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9339 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9340 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
9341 cur_arg = 1;
9342
9343 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9344 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9345 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9346 file, linenum, args[0]);
9347 goto out_err;
9348 }
9349
9350 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9351 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9352 LIST_INIT(&rule->arg.hdr_add.fmt);
9353
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9354 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9355 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]9356 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9357 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9358 free(proxy->conf.lfs_file);
9359 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9360 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9361 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9362 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9363 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]9364 cur_arg = 1;
9365
9366 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
9367 (*args[cur_arg+3] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9368 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9369 file, linenum, args[0]);
9370 goto out_err;
9371 }
9372
9373 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9374 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9375 LIST_INIT(&rule->arg.hdr_add.fmt);
9376
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9377 error = NULL;
9378 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9379 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9380 args[cur_arg + 1], error);
9381 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9382 goto out_err;
9383 }
9384
9385 proxy->conf.args.ctx = ARGC_HRQ;
9386 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9387 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9388 file, linenum);
9389
9390 free(proxy->conf.lfs_file);
9391 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9392 proxy->conf.lfs_line = proxy->conf.args.line;
9393 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9394 } else if (strcmp(args[0], "del-header") == 0) {
9395 rule->action = HTTP_RES_ACT_DEL_HDR;
9396 cur_arg = 1;
9397
9398 if (!*args[cur_arg] ||
9399 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9400 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9401 file, linenum, args[0]);
9402 goto out_err;
9403 }
9404
9405 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9406 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9407
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9408 proxy->conf.args.ctx = ARGC_HRS;
9409 free(proxy->conf.lfs_file);
9410 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9411 proxy->conf.lfs_line = proxy->conf.args.line;
9412 cur_arg += 1;
9413 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9414 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9415 rule->action = HTTP_RES_ACT_ADD_ACL;
9416 /*
9417 * '+ 8' for 'add-acl('
9418 * '- 9' for 'add-acl(' + trailing ')'
9419 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9420 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9421
9422 cur_arg = 1;
9423
9424 if (!*args[cur_arg] ||
9425 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9426 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9427 file, linenum, args[0]);
9428 goto out_err;
9429 }
9430
9431 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9432 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9433 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9434 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9435 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9436 free(proxy->conf.lfs_file);
9437 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9438 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9439
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9440 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9441 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9442 /* http-response del-acl(<reference (acl name)>) <key pattern> */
9443 rule->action = HTTP_RES_ACT_DEL_ACL;
9444 /*
9445 * '+ 8' for 'del-acl('
9446 * '- 9' for 'del-acl(' + trailing ')'
9447 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9448 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9449
9450 cur_arg = 1;
9451
9452 if (!*args[cur_arg] ||
9453 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9454 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9455 file, linenum, args[0]);
9456 goto out_err;
9457 }
9458
9459 LIST_INIT(&rule->arg.map.key);
9460 proxy->conf.args.ctx = ARGC_HRS;
9461 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9462 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9463 file, linenum);
9464 free(proxy->conf.lfs_file);
9465 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9466 proxy->conf.lfs_line = proxy->conf.args.line;
9467 cur_arg += 1;
9468 } else if (strncmp(args[0], "del-map", 7) == 0) {
9469 /* http-response del-map(<reference (map name)>) <key pattern> */
9470 rule->action = HTTP_RES_ACT_DEL_MAP;
9471 /*
9472 * '+ 8' for 'del-map('
9473 * '- 9' for 'del-map(' + trailing ')'
9474 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9475 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9476
9477 cur_arg = 1;
9478
9479 if (!*args[cur_arg] ||
9480 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9481 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9482 file, linenum, args[0]);
9483 goto out_err;
9484 }
9485
9486 LIST_INIT(&rule->arg.map.key);
9487 proxy->conf.args.ctx = ARGC_HRS;
9488 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9489 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9490 file, linenum);
9491 free(proxy->conf.lfs_file);
9492 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9493 proxy->conf.lfs_line = proxy->conf.args.line;
9494 cur_arg += 1;
9495 } else if (strncmp(args[0], "set-map", 7) == 0) {
9496 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
9497 rule->action = HTTP_RES_ACT_SET_MAP;
9498 /*
9499 * '+ 8' for 'set-map('
9500 * '- 9' for 'set-map(' + trailing ')'
9501 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9502 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9503
9504 cur_arg = 1;
9505
9506 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9507 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9508 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9509 file, linenum, args[0]);
9510 goto out_err;
9511 }
9512
9513 LIST_INIT(&rule->arg.map.key);
9514 LIST_INIT(&rule->arg.map.value);
9515
9516 proxy->conf.args.ctx = ARGC_HRS;
9517
9518 /* key pattern */
9519 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9520 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9521 file, linenum);
9522
9523 /* value pattern */
9524 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9525 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9526 file, linenum);
9527
9528 free(proxy->conf.lfs_file);
9529 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9530 proxy->conf.lfs_line = proxy->conf.args.line;
9531
9532 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9533 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9534 char *errmsg = NULL;
9535 cur_arg = 1;
9536 /* try in the module list */
9537 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9538 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9539 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9540 free(errmsg);
9541 goto out_err;
9542 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9543 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9544 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]9545 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
9546 goto out_err;
9547 }
9548
9549 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9550 struct acl_cond *cond;
9551 char *errmsg = NULL;
9552
9553 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9554 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9555 file, linenum, args[0], errmsg);
9556 free(errmsg);
9557 goto out_err;
9558 }
9559 rule->cond = cond;
9560 }
9561 else if (*args[cur_arg]) {
9562 Alert("parsing [%s:%d]: 'http-response %s' expects"
9563 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9564 file, linenum, args[0], args[cur_arg]);
9565 goto out_err;
9566 }
9567
9568 return rule;
9569 out_err:
9570 free(rule);
9571 return NULL;
9572}
9573
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9574/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9575 * with <err> filled with the error message. If <use_fmt> is not null, builds a
9576 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9577 */
9578struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9579 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9580{
9581 struct redirect_rule *rule;
9582 int cur_arg;
9583 int type = REDIRECT_TYPE_NONE;
9584 int code = 302;
9585 const char *destination = NULL;
9586 const char *cookie = NULL;
9587 int cookie_set = 0;
9588 unsigned int flags = REDIRECT_FLAG_NONE;
9589 struct acl_cond *cond = NULL;
9590
9591 cur_arg = 0;
9592 while (*(args[cur_arg])) {
9593 if (strcmp(args[cur_arg], "location") == 0) {
9594 if (!*args[cur_arg + 1])
9595 goto missing_arg;
9596
9597 type = REDIRECT_TYPE_LOCATION;
9598 cur_arg++;
9599 destination = args[cur_arg];
9600 }
9601 else if (strcmp(args[cur_arg], "prefix") == 0) {
9602 if (!*args[cur_arg + 1])
9603 goto missing_arg;
9604
9605 type = REDIRECT_TYPE_PREFIX;
9606 cur_arg++;
9607 destination = args[cur_arg];
9608 }
9609 else if (strcmp(args[cur_arg], "scheme") == 0) {
9610 if (!*args[cur_arg + 1])
9611 goto missing_arg;
9612
9613 type = REDIRECT_TYPE_SCHEME;
9614 cur_arg++;
9615 destination = args[cur_arg];
9616 }
9617 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9618 if (!*args[cur_arg + 1])
9619 goto missing_arg;
9620
9621 cur_arg++;
9622 cookie = args[cur_arg];
9623 cookie_set = 1;
9624 }
9625 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9626 if (!*args[cur_arg + 1])
9627 goto missing_arg;
9628
9629 cur_arg++;
9630 cookie = args[cur_arg];
9631 cookie_set = 0;
9632 }
9633 else if (strcmp(args[cur_arg], "code") == 0) {
9634 if (!*args[cur_arg + 1])
9635 goto missing_arg;
9636
9637 cur_arg++;
9638 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9639 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9640 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9641 "'%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]9642 args[cur_arg - 1], args[cur_arg]);
9643 return NULL;
9644 }
9645 }
9646 else if (!strcmp(args[cur_arg],"drop-query")) {
9647 flags |= REDIRECT_FLAG_DROP_QS;
9648 }
9649 else if (!strcmp(args[cur_arg],"append-slash")) {
9650 flags |= REDIRECT_FLAG_APPEND_SLASH;
9651 }
9652 else if (strcmp(args[cur_arg], "if") == 0 ||
9653 strcmp(args[cur_arg], "unless") == 0) {
9654 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9655 if (!cond) {
9656 memprintf(errmsg, "error in condition: %s", *errmsg);
9657 return NULL;
9658 }
9659 break;
9660 }
9661 else {
9662 memprintf(errmsg,
9663 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9664 args[cur_arg]);
9665 return NULL;
9666 }
9667 cur_arg++;
9668 }
9669
9670 if (type == REDIRECT_TYPE_NONE) {
9671 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9672 return NULL;
9673 }
9674
9675 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
9676 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9677 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9678
9679 if (!use_fmt) {
9680 /* old-style static redirect rule */
9681 rule->rdr_str = strdup(destination);
9682 rule->rdr_len = strlen(destination);
9683 }
9684 else {
9685 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9686
9687 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
9688 * if prefix == "/", we don't want to add anything, otherwise it
9689 * makes it hard for the user to configure a self-redirection.
9690 */
9691 proxy->conf.args.ctx = ARGC_RDR;
9692 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9693 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]9694 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9695 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9696 free(curproxy->conf.lfs_file);
9697 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
9698 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9699 }
9700 }
9701
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9702 if (cookie) {
9703 /* depending on cookie_set, either we want to set the cookie, or to clear it.
9704 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
9705 */
9706 rule->cookie_len = strlen(cookie);
9707 if (cookie_set) {
9708 rule->cookie_str = malloc(rule->cookie_len + 10);
9709 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9710 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
9711 rule->cookie_len += 9;
9712 } else {
9713 rule->cookie_str = malloc(rule->cookie_len + 21);
9714 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9715 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
9716 rule->cookie_len += 20;
9717 }
9718 }
9719 rule->type = type;
9720 rule->code = code;
9721 rule->flags = flags;
9722 LIST_INIT(&rule->list);
9723 return rule;
9724
9725 missing_arg:
9726 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9727 return NULL;
9728}
9729
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9730/************************************************************************/
9731/* The code below is dedicated to ACL parsing and matching */
9732/************************************************************************/
9733
9734
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9735/* This function ensures that the prerequisites for an L7 fetch are ready,
9736 * which means that a request or response is ready. If some data is missing,
9737 * 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]9738 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9739 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9740 *
9741 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9742 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9743 * decide whether or not an HTTP message is present ;
9744 * 0 if the requested data cannot be fetched or if it is certain that
9745 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9746 * 1 if an HTTP message is ready
9747 */
9748static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9749smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9750 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9751{
9752 struct http_txn *txn = l7;
9753 struct http_msg *msg = &txn->req;
9754
9755 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9756 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9757 */
9758
9759 if (unlikely(!s || !txn))
9760 return 0;
9761
9762 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9763 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9764
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9765 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9766 if (unlikely(!s->req))
9767 return 0;
9768
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9769 /* If the buffer does not leave enough free space at the end,
9770 * we must first realign it.
9771 */
9772 if (s->req->buf->p > s->req->buf->data &&
9773 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
9774 buffer_slow_realign(s->req->buf);
9775
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9776 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9777 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9778 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9779
9780 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9781 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9782 http_msg_analyzer(msg, &txn->hdr_idx);
9783
9784 /* Still no valid request ? */
9785 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9786 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9787 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9788 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9789 }
9790 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9791 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9792 return 0;
9793 }
9794
9795 /* OK we just got a valid HTTP request. We have some minor
9796 * preparation to perform so that further checks can rely
9797 * on HTTP tests.
9798 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9799
9800 /* If the request was parsed but was too large, we must absolutely
9801 * return an error so that it is not processed. At the moment this
9802 * cannot happen, but if the parsers are to change in the future,
9803 * we want this check to be maintained.
9804 */
9805 if (unlikely(s->req->buf->i + s->req->buf->p >
9806 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
9807 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9808 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9809 return 1;
9810 }
9811
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9812 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9813 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
9814 s->flags |= SN_REDIRECTABLE;
9815
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9816 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
9817 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9818 }
9819
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9820 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9821 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9822 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9823
9824 /* otherwise everything's ready for the request */
9825 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9826 else {
9827 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9828 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
9829 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9830 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9831 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9832 }
9833
9834 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9835 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9836 return 1;
9837}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9838
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9839#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9840 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]9841
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9842#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9843 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]9844
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9845
9846/* 1. Check on METHOD
9847 * We use the pre-parsed method if it is known, and store its number as an
9848 * integer. If it is unknown, we use the pointer and the length.
9849 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9850static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9851{
9852 int len, meth;
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]9853 struct chunk *trash;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9854
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]9855 len = strlen(text);
9856 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9857
9858 pattern->val.i = meth;
9859 if (meth == HTTP_METH_OTHER) {
Thierry FOURNIERedc15c32013-12-13 15:36:59 +0100[diff] [blame]9860 trash = get_trash_chunk();
9861 if (trash->size < len) {
9862 memprintf(err, "no space avalaible in the buffer. expect %d, provides %d",
9863 len, trash->size);
9864 return 0;
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]9865 }
Thierry FOURNIERedc15c32013-12-13 15:36:59 +0100[diff] [blame]9866 pattern->ptr.str = trash->str;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9867 pattern->len = len;
9868 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9869 else {
9870 pattern->ptr.str = NULL;
9871 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9872 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9873 return 1;
9874}
9875
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9876/* This function fetches the method of current HTTP request and stores
9877 * it in the global pattern struct as a chunk. There are two possibilities :
9878 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
9879 * in <len> and <ptr> is NULL ;
9880 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
9881 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9882 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]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_meth(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 int meth;
9889 struct http_txn *txn = l7;
9890
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9891 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9892
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9893 meth = txn->meth;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9894 smp->type = SMP_T_METH;
9895 smp->data.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9896 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9897 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
9898 /* ensure the indexes are not affected */
9899 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9900 smp->flags |= SMP_F_CONST;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9901 smp->data.meth.str.len = txn->req.sl.rq.m_l;
9902 smp->data.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9903 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9904 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9905 return 1;
9906}
9907
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9908/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9909static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9910{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9911 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9912 struct pattern_list *lst;
9913 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9914
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9915 list_for_each_entry(lst, &expr->patterns, list) {
9916 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9917
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9918 /* well-known method */
9919 if (pattern->val.i != HTTP_METH_OTHER) {
9920 if (smp->data.meth.meth == pattern->val.i)
9921 return pattern;
9922 else
9923 continue;
9924 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9925
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9926 /* Other method, we must compare the strings */
9927 if (pattern->len != smp->data.meth.str.len)
9928 continue;
9929
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9930 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9931 if ((icase && strncasecmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) != 0) ||
9932 (!icase && strncmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) != 0))
9933 return pattern;
9934 }
9935 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9936}
9937
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9938static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9939smp_fetch_rqver(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 Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9948 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9949 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9950
9951 while ((len-- > 0) && (*ptr++ != '/'));
9952 if (len <= 0)
9953 return 0;
9954
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9955 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9956 smp->data.str.str = ptr;
9957 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9958
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9959 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9960 return 1;
9961}
9962
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9963static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9964smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9965 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9966{
9967 struct http_txn *txn = l7;
9968 char *ptr;
9969 int len;
9970
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9971 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9972
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9973 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9974 return 0;
9975
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9976 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9977 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9978
9979 while ((len-- > 0) && (*ptr++ != '/'));
9980 if (len <= 0)
9981 return 0;
9982
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9983 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9984 smp->data.str.str = ptr;
9985 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9986
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9987 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9988 return 1;
9989}
9990
9991/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9992static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9993smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9994 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9995{
9996 struct http_txn *txn = l7;
9997 char *ptr;
9998 int len;
9999
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10000 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10001
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10002 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10003 return 0;
10004
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10005 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10006 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10007
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10008 smp->type = SMP_T_UINT;
10009 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10010 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10011 return 1;
10012}
10013
10014/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10015static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10016smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10017 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10018{
10019 struct http_txn *txn = l7;
10020
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10021 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10022
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10023 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10024 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10025 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10026 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10027 return 1;
10028}
10029
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10030static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10031smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10032 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10033{
10034 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10035 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10036
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10037 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10038
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10039 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]10040 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10041 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10042
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10043 smp->type = SMP_T_IPV4;
10044 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10045 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10046 return 1;
10047}
10048
10049static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10050smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10051 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10052{
10053 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10054 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10055
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10056 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10057
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10058 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]10059 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10060 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10061
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10062 smp->type = SMP_T_UINT;
10063 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10064 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10065 return 1;
10066}
10067
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10068/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10069 * Accepts an optional argument of type string containing the header field name,
10070 * and an optional argument of type signed or unsigned integer to request an
10071 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10072 * headers are considered from the first one. It does not stop on commas and
10073 * returns full lines instead (useful for User-Agent or Date for example).
10074 */
10075static int
10076smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10077 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10078{
10079 struct http_txn *txn = l7;
10080 struct hdr_idx *idx = &txn->hdr_idx;
10081 struct hdr_ctx *ctx = smp->ctx.a[0];
10082 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
10083 int occ = 0;
10084 const char *name_str = NULL;
10085 int name_len = 0;
10086
10087 if (!ctx) {
10088 /* first call */
10089 ctx = &static_hdr_ctx;
10090 ctx->idx = 0;
10091 smp->ctx.a[0] = ctx;
10092 }
10093
10094 if (args) {
10095 if (args[0].type != ARGT_STR)
10096 return 0;
10097 name_str = args[0].data.str.str;
10098 name_len = args[0].data.str.len;
10099
10100 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10101 occ = args[1].data.uint;
10102 }
10103
10104 CHECK_HTTP_MESSAGE_FIRST();
10105
10106 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10107 /* search for header from the beginning */
10108 ctx->idx = 0;
10109
10110 if (!occ && !(opt & SMP_OPT_ITERATE))
10111 /* no explicit occurrence and single fetch => last header by default */
10112 occ = -1;
10113
10114 if (!occ)
10115 /* prepare to report multiple occurrences for ACL fetches */
10116 smp->flags |= SMP_F_NOT_LAST;
10117
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10118 smp->type = SMP_T_STR;
10119 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10120 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
10121 return 1;
10122
10123 smp->flags &= ~SMP_F_NOT_LAST;
10124 return 0;
10125}
10126
10127/* 6. Check on HTTP header count. The number of occurrences is returned.
10128 * Accepts exactly 1 argument of type string. It does not stop on commas and
10129 * returns full lines instead (useful for User-Agent or Date for example).
10130 */
10131static int
10132smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10133 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10134{
10135 struct http_txn *txn = l7;
10136 struct hdr_idx *idx = &txn->hdr_idx;
10137 struct hdr_ctx ctx;
10138 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
10139 int cnt;
10140
10141 if (!args || args->type != ARGT_STR)
10142 return 0;
10143
10144 CHECK_HTTP_MESSAGE_FIRST();
10145
10146 ctx.idx = 0;
10147 cnt = 0;
10148 while (http_find_full_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
10149 cnt++;
10150
10151 smp->type = SMP_T_UINT;
10152 smp->data.uint = cnt;
10153 smp->flags = SMP_F_VOL_HDR;
10154 return 1;
10155}
10156
10157/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10158 * Accepts an optional argument of type string containing the header field name,
10159 * and an optional argument of type signed or unsigned integer to request an
10160 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10161 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10162 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10163static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10164smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10165 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10166{
10167 struct http_txn *txn = l7;
10168 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10169 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10170 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]10171 int occ = 0;
10172 const char *name_str = NULL;
10173 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10174
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10175 if (!ctx) {
10176 /* first call */
10177 ctx = &static_hdr_ctx;
10178 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10179 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10180 }
10181
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10182 if (args) {
10183 if (args[0].type != ARGT_STR)
10184 return 0;
10185 name_str = args[0].data.str.str;
10186 name_len = args[0].data.str.len;
10187
10188 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10189 occ = args[1].data.uint;
10190 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10191
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10192 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10193
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10194 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10195 /* search for header from the beginning */
10196 ctx->idx = 0;
10197
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10198 if (!occ && !(opt & SMP_OPT_ITERATE))
10199 /* no explicit occurrence and single fetch => last header by default */
10200 occ = -1;
10201
10202 if (!occ)
10203 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10204 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10205
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10206 smp->type = SMP_T_STR;
10207 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10208 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]10209 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10210
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10211 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10212 return 0;
10213}
10214
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10215/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10216 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10217 */
10218static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10219smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10220 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10221{
10222 struct http_txn *txn = l7;
10223 struct hdr_idx *idx = &txn->hdr_idx;
10224 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10225 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]10226 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10227
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10228 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10229 return 0;
10230
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10231 CHECK_HTTP_MESSAGE_FIRST();
10232
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10233 ctx.idx = 0;
10234 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10235 while (http_find_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10236 cnt++;
10237
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10238 smp->type = SMP_T_UINT;
10239 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10240 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10241 return 1;
10242}
10243
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10244/* Fetch an HTTP header's integer value. The integer value is returned. It
10245 * takes a mandatory argument of type string and an optional one of type int
10246 * to designate a specific occurrence. It returns an unsigned integer, which
10247 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10248 */
10249static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10250smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10251 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10252{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10253 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10254
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10255 if (ret > 0) {
10256 smp->type = SMP_T_UINT;
10257 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10258 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10259
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10260 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10261}
10262
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10263/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10264 * and an optional one of type int to designate a specific occurrence.
10265 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10266 */
10267static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10268smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10269 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10270{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10271 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10272
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10273 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10274 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
10275 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10276 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10277 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10278 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10279 if (smp->data.str.len < temp->size - 1) {
10280 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
10281 temp->str[smp->data.str.len] = '\0';
10282 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
10283 smp->type = SMP_T_IPV6;
10284 break;
10285 }
10286 }
10287 }
10288
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10289 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10290 if (!(smp->flags & SMP_F_NOT_LAST))
10291 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10292 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10293 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10294}
10295
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10296/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10297 * the first '/' after the possible hostname, and ends before the possible '?'.
10298 */
10299static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10300smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10301 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10302{
10303 struct http_txn *txn = l7;
10304 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10305
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10306 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10307
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10308 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]10309 ptr = http_get_path(txn);
10310 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10311 return 0;
10312
10313 /* OK, we got the '/' ! */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10314 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10315 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10316
10317 while (ptr < end && *ptr != '?')
10318 ptr++;
10319
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10320 smp->data.str.len = ptr - smp->data.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10321 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10322 return 1;
10323}
10324
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10325/* This produces a concatenation of the first occurrence of the Host header
10326 * followed by the path component if it begins with a slash ('/'). This means
10327 * that '*' will not be added, resulting in exactly the first Host entry.
10328 * If no Host header is found, then the path is returned as-is. The returned
10329 * 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]10330 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10331 */
10332static int
10333smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10334 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10335{
10336 struct http_txn *txn = l7;
10337 char *ptr, *end, *beg;
10338 struct hdr_ctx ctx;
10339
10340 CHECK_HTTP_MESSAGE_FIRST();
10341
10342 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10343 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]10344 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10345
10346 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]10347 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10348 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]10349 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10350 smp->data.str.len = ctx.vlen;
10351
10352 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10353 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]10354 beg = http_get_path(txn);
10355 if (!beg)
10356 beg = end;
10357
10358 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10359
10360 if (beg < ptr && *beg == '/') {
10361 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
10362 smp->data.str.len += ptr - beg;
10363 }
10364
10365 smp->flags = SMP_F_VOL_1ST;
10366 return 1;
10367}
10368
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10369/* This produces a 32-bit hash of the concatenation of the first occurrence of
10370 * the Host header followed by the path component if it begins with a slash ('/').
10371 * This means that '*' will not be added, resulting in exactly the first Host
10372 * 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]10373 * is hashed using the path hash followed by a full avalanche hash and provides a
10374 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10375 * high-traffic sites without having to store whole paths.
10376 */
10377static int
10378smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10379 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10380{
10381 struct http_txn *txn = l7;
10382 struct hdr_ctx ctx;
10383 unsigned int hash = 0;
10384 char *ptr, *beg, *end;
10385 int len;
10386
10387 CHECK_HTTP_MESSAGE_FIRST();
10388
10389 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10390 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]10391 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10392 ptr = ctx.line + ctx.val;
10393 len = ctx.vlen;
10394 while (len--)
10395 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10396 }
10397
10398 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10399 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]10400 beg = http_get_path(txn);
10401 if (!beg)
10402 beg = end;
10403
10404 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10405
10406 if (beg < ptr && *beg == '/') {
10407 while (beg < ptr)
10408 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10409 }
10410 hash = full_hash(hash);
10411
10412 smp->type = SMP_T_UINT;
10413 smp->data.uint = hash;
10414 smp->flags = SMP_F_VOL_1ST;
10415 return 1;
10416}
10417
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10418/* 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]10419 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10420 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10421 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10422 * that in environments where IPv6 is insignificant, truncating the output to
10423 * 8 bytes would still work.
10424 */
10425static int
10426smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10427 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10428{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10429 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10430 struct connection *cli_conn = objt_conn(l4->si[0].end);
10431
10432 if (!cli_conn)
10433 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10434
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10435 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10436 return 0;
10437
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10438 temp = get_trash_chunk();
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10439 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
10440 temp->len += sizeof(smp->data.uint);
10441
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10442 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10443 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10444 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]10445 temp->len += 4;
10446 break;
10447 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10448 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]10449 temp->len += 16;
10450 break;
10451 default:
10452 return 0;
10453 }
10454
10455 smp->data.str = *temp;
10456 smp->type = SMP_T_BIN;
10457 return 1;
10458}
10459
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10460static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10461smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10462 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10463{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10464 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10465 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10466 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10467
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10468 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10469
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10470 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10471 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10472 return 1;
10473}
10474
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10475/* return a valid test if the current request is the first one on the connection */
10476static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10477smp_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]10478 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10479{
10480 if (!s)
10481 return 0;
10482
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10483 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10484 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10485 return 1;
10486}
10487
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10488/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10489static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10490smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10491 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10492{
10493
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10494 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10495 return 0;
10496
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10497 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10498
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10499 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10500 return 0;
10501
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10502 smp->type = SMP_T_BOOL;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10503 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]10504 return 1;
10505}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10506
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10507/* Accepts exactly 1 argument of type userlist */
10508static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10509smp_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]10510 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10511{
10512
10513 if (!args || args->type != ARGT_USR)
10514 return 0;
10515
10516 CHECK_HTTP_MESSAGE_FIRST();
10517
10518 if (!get_http_auth(l4))
10519 return 0;
10520
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10521 /* if the user does not belong to the userlist or has a wrong password,
10522 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10523 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10524 */
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10525 if (!check_user(args->data.usr, l4->txn.auth.user, l4->txn.auth.pass))
10526 return 0;
10527
10528 /* pat_match_auth() will need the user list */
10529 smp->ctx.a[0] = args->data.usr;
10530
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10531 smp->type = SMP_T_STR;
10532 smp->flags = SMP_F_CONST;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10533 smp->data.str.str = l4->txn.auth.user;
10534 smp->data.str.len = strlen(l4->txn.auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10535
10536 return 1;
10537}
10538
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10539/* Try to find the next occurrence of a cookie name in a cookie header value.
10540 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10541 * the cookie value is returned into *value and *value_l, and the function
10542 * returns a pointer to the next pointer to search from if the value was found.
10543 * Otherwise if the cookie was not found, NULL is returned and neither value
10544 * nor value_l are touched. The input <hdr> string should first point to the
10545 * header's value, and the <hdr_end> pointer must point to the first character
10546 * not part of the value. <list> must be non-zero if value may represent a list
10547 * of values (cookie headers). This makes it faster to abort parsing when no
10548 * list is expected.
10549 */
10550static char *
10551extract_cookie_value(char *hdr, const char *hdr_end,
10552 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10553 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10554{
10555 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10556 char *next;
10557
10558 /* we search at least a cookie name followed by an equal, and more
10559 * generally something like this :
10560 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
10561 */
10562 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
10563 /* Iterate through all cookies on this line */
10564
10565 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
10566 att_beg++;
10567
10568 /* find att_end : this is the first character after the last non
10569 * space before the equal. It may be equal to hdr_end.
10570 */
10571 equal = att_end = att_beg;
10572
10573 while (equal < hdr_end) {
10574 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
10575 break;
10576 if (http_is_spht[(unsigned char)*equal++])
10577 continue;
10578 att_end = equal;
10579 }
10580
10581 /* here, <equal> points to '=', a delimitor or the end. <att_end>
10582 * is between <att_beg> and <equal>, both may be identical.
10583 */
10584
10585 /* look for end of cookie if there is an equal sign */
10586 if (equal < hdr_end && *equal == '=') {
10587 /* look for the beginning of the value */
10588 val_beg = equal + 1;
10589 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
10590 val_beg++;
10591
10592 /* find the end of the value, respecting quotes */
10593 next = find_cookie_value_end(val_beg, hdr_end);
10594
10595 /* make val_end point to the first white space or delimitor after the value */
10596 val_end = next;
10597 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
10598 val_end--;
10599 } else {
10600 val_beg = val_end = next = equal;
10601 }
10602
10603 /* We have nothing to do with attributes beginning with '$'. However,
10604 * they will automatically be removed if a header before them is removed,
10605 * since they're supposed to be linked together.
10606 */
10607 if (*att_beg == '$')
10608 continue;
10609
10610 /* Ignore cookies with no equal sign */
10611 if (equal == next)
10612 continue;
10613
10614 /* Now we have the cookie name between att_beg and att_end, and
10615 * its value between val_beg and val_end.
10616 */
10617
10618 if (att_end - att_beg == cookie_name_l &&
10619 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
10620 /* let's return this value and indicate where to go on from */
10621 *value = val_beg;
10622 *value_l = val_end - val_beg;
10623 return next + 1;
10624 }
10625
10626 /* Set-Cookie headers only have the name in the first attr=value part */
10627 if (!list)
10628 break;
10629 }
10630
10631 return NULL;
10632}
10633
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10634/* Fetch a captured HTTP request header. The index is the position of
10635 * the "capture" option in the configuration file
10636 */
10637static int
10638smp_fetch_capture_header_req(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10639 const struct arg *args, struct sample *smp, const char *kw)
10640{
10641 struct proxy *fe = l4->fe;
10642 struct http_txn *txn = l7;
10643 int idx;
10644
10645 if (!args || args->type != ARGT_UINT)
10646 return 0;
10647
10648 idx = args->data.uint;
10649
10650 if (idx > (fe->nb_req_cap - 1) || txn->req.cap == NULL || txn->req.cap[idx] == NULL)
10651 return 0;
10652
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10653 smp->type = SMP_T_STR;
10654 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10655 smp->data.str.str = txn->req.cap[idx];
10656 smp->data.str.len = strlen(txn->req.cap[idx]);
10657
10658 return 1;
10659}
10660
10661/* Fetch a captured HTTP response header. The index is the position of
10662 * the "capture" option in the configuration file
10663 */
10664static int
10665smp_fetch_capture_header_res(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10666 const struct arg *args, struct sample *smp, const char *kw)
10667{
10668 struct proxy *fe = l4->fe;
10669 struct http_txn *txn = l7;
10670 int idx;
10671
10672 if (!args || args->type != ARGT_UINT)
10673 return 0;
10674
10675 idx = args->data.uint;
10676
10677 if (idx > (fe->nb_rsp_cap - 1) || txn->rsp.cap == NULL || txn->rsp.cap[idx] == NULL)
10678 return 0;
10679
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10680 smp->type = SMP_T_STR;
10681 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10682 smp->data.str.str = txn->rsp.cap[idx];
10683 smp->data.str.len = strlen(txn->rsp.cap[idx]);
10684
10685 return 1;
10686}
10687
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10688/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
10689static int
10690smp_fetch_capture_req_method(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10691 const struct arg *args, struct sample *smp, const char *kw)
10692{
10693 struct chunk *temp;
10694 struct http_txn *txn = l7;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10695 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10696
10697 if (!txn->uri)
10698 return 0;
10699
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10700 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10701
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10702 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10703 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10704
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10705 temp = get_trash_chunk();
10706 temp->str = txn->uri;
10707 temp->len = ptr - txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10708 smp->data.str = *temp;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10709 smp->type = SMP_T_STR;
10710 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10711
10712 return 1;
10713
10714}
10715
10716/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
10717static int
10718smp_fetch_capture_req_uri(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10719 const struct arg *args, struct sample *smp, const char *kw)
10720{
10721 struct chunk *temp;
10722 struct http_txn *txn = l7;
10723 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10724
10725 if (!txn->uri)
10726 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10727
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10728 ptr = txn->uri;
10729
10730 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10731 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10732
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10733 if (!*ptr)
10734 return 0;
10735
10736 ptr++; /* skip the space */
10737
10738 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10739 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10740 if (!ptr)
10741 return 0;
10742 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
10743 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10744
10745 smp->data.str = *temp;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10746 smp->data.str.len = ptr - temp->str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10747 smp->type = SMP_T_STR;
10748 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10749
10750 return 1;
10751}
10752
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10753/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
10754 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10755 */
10756static int
10757smp_fetch_capture_req_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10758 const struct arg *args, struct sample *smp, const char *kw)
10759{
10760 struct http_txn *txn = l7;
10761
10762 if (txn->req.msg_state < HTTP_MSG_HDR_FIRST)
10763 return 0;
10764
10765 if (txn->req.flags & HTTP_MSGF_VER_11)
10766 smp->data.str.str = "HTTP/1.1";
10767 else
10768 smp->data.str.str = "HTTP/1.0";
10769
10770 smp->data.str.len = 8;
10771 smp->type = SMP_T_STR;
10772 smp->flags = SMP_F_CONST;
10773 return 1;
10774
10775}
10776
10777/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
10778 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10779 */
10780static int
10781smp_fetch_capture_res_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10782 const struct arg *args, struct sample *smp, const char *kw)
10783{
10784 struct http_txn *txn = l7;
10785
10786 if (txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
10787 return 0;
10788
10789 if (txn->rsp.flags & HTTP_MSGF_VER_11)
10790 smp->data.str.str = "HTTP/1.1";
10791 else
10792 smp->data.str.str = "HTTP/1.0";
10793
10794 smp->data.str.len = 8;
10795 smp->type = SMP_T_STR;
10796 smp->flags = SMP_F_CONST;
10797 return 1;
10798
10799}
10800
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10801
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10802/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10803 * 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]10804 * 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]10805 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10806 * 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]10807 * Accepts exactly 1 argument of type string. If the input options indicate
10808 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10809 * The returned sample is of type CSTR. Can be used to parse cookies in other
10810 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10811 */
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10812int smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10813 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10814{
10815 struct http_txn *txn = l7;
10816 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10817 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10818 const struct http_msg *msg;
10819 const char *hdr_name;
10820 int hdr_name_len;
10821 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10822 int occ = 0;
10823 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10824
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10825 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10826 return 0;
10827
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10828 if (!ctx) {
10829 /* first call */
10830 ctx = &static_hdr_ctx;
10831 ctx->idx = 0;
10832 smp->ctx.a[2] = ctx;
10833 }
10834
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10835 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10836
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10837 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10838 msg = &txn->req;
10839 hdr_name = "Cookie";
10840 hdr_name_len = 6;
10841 } else {
10842 msg = &txn->rsp;
10843 hdr_name = "Set-Cookie";
10844 hdr_name_len = 10;
10845 }
10846
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10847 if (!occ && !(opt & SMP_OPT_ITERATE))
10848 /* no explicit occurrence and single fetch => last cookie by default */
10849 occ = -1;
10850
10851 /* OK so basically here, either we want only one value and it's the
10852 * last one, or we want to iterate over all of them and we fetch the
10853 * next one.
10854 */
10855
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10856 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10857 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10858 /* search for the header from the beginning, we must first initialize
10859 * the search parameters.
10860 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10861 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10862 ctx->idx = 0;
10863 }
10864
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10865 smp->flags |= SMP_F_VOL_HDR;
10866
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10867 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10868 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
10869 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10870 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
10871 goto out;
10872
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10873 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10874 continue;
10875
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10876 smp->ctx.a[0] = ctx->line + ctx->val;
10877 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10878 }
10879
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10880 smp->type = SMP_T_STR;
10881 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10882 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]10883 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10884 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10885 &smp->data.str.str,
10886 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10887 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10888 found = 1;
10889 if (occ >= 0) {
10890 /* one value was returned into smp->data.str.{str,len} */
10891 smp->flags |= SMP_F_NOT_LAST;
10892 return 1;
10893 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10894 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10895 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10896 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10897 /* all cookie headers and values were scanned. If we're looking for the
10898 * last occurrence, we may return it now.
10899 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10900 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10901 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10902 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10903}
10904
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10905/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10906 * 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]10907 * multiple cookies may be parsed on the same line. The returned sample is of
10908 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10909 */
10910static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10911smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10912 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10913{
10914 struct http_txn *txn = l7;
10915 struct hdr_idx *idx = &txn->hdr_idx;
10916 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10917 const struct http_msg *msg;
10918 const char *hdr_name;
10919 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10920 int cnt;
10921 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10922 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10923
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10924 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10925 return 0;
10926
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10927 CHECK_HTTP_MESSAGE_FIRST();
10928
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10929 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10930 msg = &txn->req;
10931 hdr_name = "Cookie";
10932 hdr_name_len = 6;
10933 } else {
10934 msg = &txn->rsp;
10935 hdr_name = "Set-Cookie";
10936 hdr_name_len = 10;
10937 }
10938
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10939 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]10940 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10941 ctx.idx = 0;
10942 cnt = 0;
10943
10944 while (1) {
10945 /* Note: val_beg == NULL every time we need to fetch a new header */
10946 if (!val_beg) {
10947 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
10948 break;
10949
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10950 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10951 continue;
10952
10953 val_beg = ctx.line + ctx.val;
10954 val_end = val_beg + ctx.vlen;
10955 }
10956
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10957 smp->type = SMP_T_STR;
10958 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10959 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10960 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10961 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10962 &smp->data.str.str,
10963 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10964 cnt++;
10965 }
10966 }
10967
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]10968 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10969 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10970 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10971 return 1;
10972}
10973
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10974/* Fetch an cookie's integer value. The integer value is returned. It
10975 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
10976 */
10977static int
10978smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10979 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10980{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10981 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10982
10983 if (ret > 0) {
10984 smp->type = SMP_T_UINT;
10985 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10986 }
10987
10988 return ret;
10989}
10990
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10991/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10992/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10993/************************************************************************/
10994
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10995/*
10996 * Given a path string and its length, find the position of beginning of the
10997 * query string. Returns NULL if no query string is found in the path.
10998 *
10999 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11000 *
11001 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
11002 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11003static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11004{
11005 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11006
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11007 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11008 return p ? p + 1 : NULL;
11009}
11010
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11011static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11012{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11013 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11014}
11015
11016/*
11017 * Given a url parameter, find the starting position of the first occurence,
11018 * or NULL if the parameter is not found.
11019 *
11020 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11021 * the function will return query_string+8.
11022 */
11023static char*
11024find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11025 char* url_param_name, size_t url_param_name_l,
11026 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11027{
11028 char *pos, *last;
11029
11030 pos = query_string;
11031 last = query_string + query_string_l - url_param_name_l - 1;
11032
11033 while (pos <= last) {
11034 if (pos[url_param_name_l] == '=') {
11035 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
11036 return pos;
11037 pos += url_param_name_l + 1;
11038 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11039 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11040 pos++;
11041 pos++;
11042 }
11043 return NULL;
11044}
11045
11046/*
11047 * Given a url parameter name, returns its value and size into *value and
11048 * *value_l respectively, and returns non-zero. If the parameter is not found,
11049 * zero is returned and value/value_l are not touched.
11050 */
11051static int
11052find_url_param_value(char* path, size_t path_l,
11053 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11054 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11055{
11056 char *query_string, *qs_end;
11057 char *arg_start;
11058 char *value_start, *value_end;
11059
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11060 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11061 if (!query_string)
11062 return 0;
11063
11064 qs_end = path + path_l;
11065 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11066 url_param_name, url_param_name_l,
11067 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11068 if (!arg_start)
11069 return 0;
11070
11071 value_start = arg_start + url_param_name_l + 1;
11072 value_end = value_start;
11073
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11074 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11075 value_end++;
11076
11077 *value = value_start;
11078 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]11079 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11080}
11081
11082static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11083smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11084 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11085{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11086 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11087 struct http_txn *txn = l7;
11088 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11089
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11090 if (!args || args[0].type != ARGT_STR ||
11091 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11092 return 0;
11093
11094 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11095
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11096 if (args[1].type)
11097 delim = *args[1].data.str.str;
11098
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11099 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]11100 args->data.str.str, args->data.str.len,
11101 &smp->data.str.str, &smp->data.str.len,
11102 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11103 return 0;
11104
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11105 smp->type = SMP_T_STR;
11106 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11107 return 1;
11108}
11109
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11110/* Return the signed integer value for the specified url parameter (see url_param
11111 * above).
11112 */
11113static int
11114smp_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]11115 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11116{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11117 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11118
11119 if (ret > 0) {
11120 smp->type = SMP_T_UINT;
11121 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11122 }
11123
11124 return ret;
11125}
11126
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11127/* This produces a 32-bit hash of the concatenation of the first occurrence of
11128 * the Host header followed by the path component if it begins with a slash ('/').
11129 * This means that '*' will not be added, resulting in exactly the first Host
11130 * entry. If no Host header is found, then the path is used. The resulting value
11131 * is hashed using the url hash followed by a full avalanche hash and provides a
11132 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11133 * high-traffic sites without having to store whole paths.
11134 * this differs from the base32 functions in that it includes the url parameters
11135 * as well as the path
11136 */
11137static int
11138smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11139 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11140{
11141 struct http_txn *txn = l7;
11142 struct hdr_ctx ctx;
11143 unsigned int hash = 0;
11144 char *ptr, *beg, *end;
11145 int len;
11146
11147 CHECK_HTTP_MESSAGE_FIRST();
11148
11149 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11150 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]11151 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11152 ptr = ctx.line + ctx.val;
11153 len = ctx.vlen;
11154 while (len--)
11155 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11156 }
11157
11158 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11159 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]11160 beg = http_get_path(txn);
11161 if (!beg)
11162 beg = end;
11163
11164 for (ptr = beg; ptr < end ; ptr++);
11165
11166 if (beg < ptr && *beg == '/') {
11167 while (beg < ptr)
11168 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11169 }
11170 hash = full_hash(hash);
11171
11172 smp->type = SMP_T_UINT;
11173 smp->data.uint = hash;
11174 smp->flags = SMP_F_VOL_1ST;
11175 return 1;
11176}
11177
11178/* This concatenates the source address with the 32-bit hash of the Host and
11179 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11180 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11181 * on the source address length. The URL hash is stored before the address so
11182 * that in environments where IPv6 is insignificant, truncating the output to
11183 * 8 bytes would still work.
11184 */
11185static int
11186smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11187 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11188{
11189 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11190 struct connection *cli_conn = objt_conn(l4->si[0].end);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11191
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11192 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11193 return 0;
11194
11195 temp = get_trash_chunk();
11196 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
11197 temp->len += sizeof(smp->data.uint);
11198
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11199 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11200 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11201 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]11202 temp->len += 4;
11203 break;
11204 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11205 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]11206 temp->len += 16;
11207 break;
11208 default:
11209 return 0;
11210 }
11211
11212 smp->data.str = *temp;
11213 smp->type = SMP_T_BIN;
11214 return 1;
11215}
11216
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11217/* This function is used to validate the arguments passed to any "hdr" fetch
11218 * keyword. These keywords support an optional positive or negative occurrence
11219 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11220 * is assumed that the types are already the correct ones. Returns 0 on error,
11221 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11222 * error message in case of error, that the caller is responsible for freeing.
11223 * The initial location must either be freeable or NULL.
11224 */
11225static int val_hdr(struct arg *arg, char **err_msg)
11226{
11227 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11228 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11229 return 0;
11230 }
11231 return 1;
11232}
11233
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11234/* takes an UINT value on input supposed to represent the time since EPOCH,
11235 * adds an optional offset found in args[0] and emits a string representing
11236 * the date in RFC-1123/5322 format.
11237 */
11238static int sample_conv_http_date(const struct arg *args, struct sample *smp)
11239{
11240 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
11241 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11242 struct chunk *temp;
11243 struct tm *tm;
11244 time_t curr_date = smp->data.uint;
11245
11246 /* add offset */
11247 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
11248 curr_date += args[0].data.sint;
11249
11250 tm = gmtime(&curr_date);
11251
11252 temp = get_trash_chunk();
11253 temp->len = snprintf(temp->str, temp->size - temp->len,
11254 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11255 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11256 tm->tm_hour, tm->tm_min, tm->tm_sec);
11257
11258 smp->data.str = *temp;
11259 smp->type = SMP_T_STR;
11260 return 1;
11261}
11262
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11263/* Match language range with language tag. RFC2616 14.4:
11264 *
11265 * A language-range matches a language-tag if it exactly equals
11266 * the tag, or if it exactly equals a prefix of the tag such
11267 * that the first tag character following the prefix is "-".
11268 *
11269 * Return 1 if the strings match, else return 0.
11270 */
11271static inline int language_range_match(const char *range, int range_len,
11272 const char *tag, int tag_len)
11273{
11274 const char *end = range + range_len;
11275 const char *tend = tag + tag_len;
11276 while (range < end) {
11277 if (*range == '-' && tag == tend)
11278 return 1;
11279 if (*range != *tag || tag == tend)
11280 return 0;
11281 range++;
11282 tag++;
11283 }
11284 /* Return true only if the last char of the tag is matched. */
11285 return tag == tend;
11286}
11287
11288/* Arguments: The list of expected value, the number of parts returned and the separator */
11289static int sample_conv_q_prefered(const struct arg *args, struct sample *smp)
11290{
11291 const char *al = smp->data.str.str;
11292 const char *end = al + smp->data.str.len;
11293 const char *token;
11294 int toklen;
11295 int qvalue;
11296 const char *str;
11297 const char *w;
11298 int best_q = 0;
11299
11300 /* Set the constant to the sample, because the output of the
11301 * function will be peek in the constant configuration string.
11302 */
11303 smp->flags |= SMP_F_CONST;
11304 smp->data.str.size = 0;
11305 smp->data.str.str = "";
11306 smp->data.str.len = 0;
11307
11308 /* Parse the accept language */
11309 while (1) {
11310
11311 /* Jump spaces, quit if the end is detected. */
11312 while (al < end && isspace(*al))
11313 al++;
11314 if (al >= end)
11315 break;
11316
11317 /* Start of the fisrt word. */
11318 token = al;
11319
11320 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
11321 while (al < end && *al != ';' && *al != ',' && !isspace(*al))
11322 al++;
11323 if (al == token)
11324 goto expect_comma;
11325
11326 /* Length of the token. */
11327 toklen = al - token;
11328 qvalue = 1000;
11329
11330 /* Check if the token exists in the list. If the token not exists,
11331 * jump to the next token.
11332 */
11333 str = args[0].data.str.str;
11334 w = str;
11335 while (1) {
11336 if (*str == ';' || *str == '\0') {
11337 if (language_range_match(token, toklen, w, str-w))
11338 goto look_for_q;
11339 if (*str == '\0')
11340 goto expect_comma;
11341 w = str + 1;
11342 }
11343 str++;
11344 }
11345 goto expect_comma;
11346
11347look_for_q:
11348
11349 /* Jump spaces, quit if the end is detected. */
11350 while (al < end && isspace(*al))
11351 al++;
11352 if (al >= end)
11353 goto process_value;
11354
11355 /* If ',' is found, process the result */
11356 if (*al == ',')
11357 goto process_value;
11358
11359 /* If the character is different from ';', look
11360 * for the end of the header part in best effort.
11361 */
11362 if (*al != ';')
11363 goto expect_comma;
11364
11365 /* Assumes that the char is ';', now expect "q=". */
11366 al++;
11367
11368 /* Jump spaces, process value if the end is detected. */
11369 while (al < end && isspace(*al))
11370 al++;
11371 if (al >= end)
11372 goto process_value;
11373
11374 /* Expect 'q'. If no 'q', continue in best effort */
11375 if (*al != 'q')
11376 goto process_value;
11377 al++;
11378
11379 /* Jump spaces, process value if the end is detected. */
11380 while (al < end && isspace(*al))
11381 al++;
11382 if (al >= end)
11383 goto process_value;
11384
11385 /* Expect '='. If no '=', continue in best effort */
11386 if (*al != '=')
11387 goto process_value;
11388 al++;
11389
11390 /* Jump spaces, process value if the end is detected. */
11391 while (al < end && isspace(*al))
11392 al++;
11393 if (al >= end)
11394 goto process_value;
11395
11396 /* Parse the q value. */
11397 qvalue = parse_qvalue(al, &al);
11398
11399process_value:
11400
11401 /* If the new q value is the best q value, then store the associated
11402 * language in the response. If qvalue is the biggest value (1000),
11403 * break the process.
11404 */
11405 if (qvalue > best_q) {
11406 smp->data.str.str = (char *)w;
11407 smp->data.str.len = str - w;
11408 if (qvalue >= 1000)
11409 break;
11410 best_q = qvalue;
11411 }
11412
11413expect_comma:
11414
11415 /* Expect comma or end. If the end is detected, quit the loop. */
11416 while (al < end && *al != ',')
11417 al++;
11418 if (al >= end)
11419 break;
11420
11421 /* Comma is found, jump it and restart the analyzer. */
11422 al++;
11423 }
11424
11425 /* Set default value if required. */
11426 if (smp->data.str.len == 0 && args[1].type == ARGT_STR) {
11427 smp->data.str.str = args[1].data.str.str;
11428 smp->data.str.len = args[1].data.str.len;
11429 }
11430
11431 /* Return true only if a matching language was found. */
11432 return smp->data.str.len != 0;
11433}
11434
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]11435/*
11436 * Return the struct http_req_action_kw associated to a keyword.
11437 */
11438struct http_req_action_kw *action_http_req_custom(const char *kw)
11439{
11440 if (!LIST_ISEMPTY(&http_req_keywords.list)) {
11441 struct http_req_action_kw_list *kw_list;
11442 int i;
11443
11444 list_for_each_entry(kw_list, &http_req_keywords.list, list) {
11445 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
11446 if (!strcmp(kw, kw_list->kw[i].kw))
11447 return &kw_list->kw[i];
11448 }
11449 }
11450 }
11451 return NULL;
11452}
11453
11454/*
11455 * Return the struct http_res_action_kw associated to a keyword.
11456 */
11457struct http_res_action_kw *action_http_res_custom(const char *kw)
11458{
11459 if (!LIST_ISEMPTY(&http_res_keywords.list)) {
11460 struct http_res_action_kw_list *kw_list;
11461 int i;
11462
11463 list_for_each_entry(kw_list, &http_res_keywords.list, list) {
11464 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
11465 if (!strcmp(kw, kw_list->kw[i].kw))
11466 return &kw_list->kw[i];
11467 }
11468 }
11469 }
11470 return NULL;
11471}
11472
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11473/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11474/* All supported ACL keywords must be declared here. */
11475/************************************************************************/
11476
11477/* Note: must not be declared <const> as its list will be overwritten.
11478 * Please take care of keeping this list alphabetically sorted.
11479 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]11480static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11481 { "base", "base", PAT_MATCH_STR },
11482 { "base_beg", "base", PAT_MATCH_BEG },
11483 { "base_dir", "base", PAT_MATCH_DIR },
11484 { "base_dom", "base", PAT_MATCH_DOM },
11485 { "base_end", "base", PAT_MATCH_END },
11486 { "base_len", "base", PAT_MATCH_LEN },
11487 { "base_reg", "base", PAT_MATCH_REG },
11488 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11489
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11490 { "cook", "req.cook", PAT_MATCH_STR },
11491 { "cook_beg", "req.cook", PAT_MATCH_BEG },
11492 { "cook_dir", "req.cook", PAT_MATCH_DIR },
11493 { "cook_dom", "req.cook", PAT_MATCH_DOM },
11494 { "cook_end", "req.cook", PAT_MATCH_END },
11495 { "cook_len", "req.cook", PAT_MATCH_LEN },
11496 { "cook_reg", "req.cook", PAT_MATCH_REG },
11497 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11498
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11499 { "hdr", "req.hdr", PAT_MATCH_STR },
11500 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
11501 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
11502 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
11503 { "hdr_end", "req.hdr", PAT_MATCH_END },
11504 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
11505 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
11506 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11507
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11508 /* these two declarations uses strings with list storage (in place
11509 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
11510 * and delete functions are relative to the list management. The parse
11511 * and match method are related to the corresponding fetch methods. This
11512 * is very particular ACL declaration mode.
11513 */
11514 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
11515 { "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]11516
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11517 { "path", "path", PAT_MATCH_STR },
11518 { "path_beg", "path", PAT_MATCH_BEG },
11519 { "path_dir", "path", PAT_MATCH_DIR },
11520 { "path_dom", "path", PAT_MATCH_DOM },
11521 { "path_end", "path", PAT_MATCH_END },
11522 { "path_len", "path", PAT_MATCH_LEN },
11523 { "path_reg", "path", PAT_MATCH_REG },
11524 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11525
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11526 { "req_ver", "req.ver", PAT_MATCH_STR },
11527 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11528
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11529 { "scook", "res.cook", PAT_MATCH_STR },
11530 { "scook_beg", "res.cook", PAT_MATCH_BEG },
11531 { "scook_dir", "res.cook", PAT_MATCH_DIR },
11532 { "scook_dom", "res.cook", PAT_MATCH_DOM },
11533 { "scook_end", "res.cook", PAT_MATCH_END },
11534 { "scook_len", "res.cook", PAT_MATCH_LEN },
11535 { "scook_reg", "res.cook", PAT_MATCH_REG },
11536 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11537
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11538 { "shdr", "res.hdr", PAT_MATCH_STR },
11539 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
11540 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
11541 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
11542 { "shdr_end", "res.hdr", PAT_MATCH_END },
11543 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
11544 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
11545 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11546
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11547 { "url", "url", PAT_MATCH_STR },
11548 { "url_beg", "url", PAT_MATCH_BEG },
11549 { "url_dir", "url", PAT_MATCH_DIR },
11550 { "url_dom", "url", PAT_MATCH_DOM },
11551 { "url_end", "url", PAT_MATCH_END },
11552 { "url_len", "url", PAT_MATCH_LEN },
11553 { "url_reg", "url", PAT_MATCH_REG },
11554 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11555
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11556 { "urlp", "urlp", PAT_MATCH_STR },
11557 { "urlp_beg", "urlp", PAT_MATCH_BEG },
11558 { "urlp_dir", "urlp", PAT_MATCH_DIR },
11559 { "urlp_dom", "urlp", PAT_MATCH_DOM },
11560 { "urlp_end", "urlp", PAT_MATCH_END },
11561 { "urlp_len", "urlp", PAT_MATCH_LEN },
11562 { "urlp_reg", "urlp", PAT_MATCH_REG },
11563 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11564
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]11565 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11566}};
11567
11568/************************************************************************/
11569/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11570/************************************************************************/
11571/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]11572static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11573 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11574 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
11575 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
11576
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11577 /* capture are allocated and are permanent in the session */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11578 { "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]11579
11580 /* retrieve these captures from the HTTP logs */
11581 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11582 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11583 { "capture.req.ver", smp_fetch_capture_req_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11584
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11585 { "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]11586 { "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]11587
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11588 /* cookie is valid in both directions (eg: for "stick ...") but cook*
11589 * are only here to match the ACL's name, are request-only and are used
11590 * for ACL compatibility only.
11591 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11592 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
11593 { "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]11594 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11595 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11596
11597 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
11598 * only here to match the ACL's name, are request-only and are used for
11599 * ACL compatibility only.
11600 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11601 { "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]11602 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11603 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
11604 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
11605
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]11606 { "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]11607 { "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]11608 { "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]11609 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11610 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11611
11612 /* HTTP protocol on the request path */
11613 { "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]11614 { "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]11615
11616 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11617 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
11618 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11619
11620 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11621 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
11622 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11623
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11624 /* 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]11625 { "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]11626 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11627 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11628
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11629 { "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]11630 { "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]11631 { "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]11632 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11633 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
11634 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
11635
11636 /* 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]11637 { "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]11638 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11639 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11640
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11641 { "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]11642 { "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]11643 { "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]11644 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11645 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
11646 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
11647
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11648 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11649 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11650 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11651 { "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]11652 { "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]11653
11654 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11655 { "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]11656 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11657 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
11658 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
11659
11660 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11661 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11662 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
11663 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11664 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
11665 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11666 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
11667 { "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]11668 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11669 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11670}};
11671
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11672
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11673/* Note: must not be declared <const> as its list will be overwritten */
11674static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11675 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR},
11676 { "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]11677 { NULL, NULL, 0, 0, 0 },
11678}};
11679
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11680__attribute__((constructor))
11681static void __http_protocol_init(void)
11682{
11683 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11684 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11685 sample_register_convs(&sample_conv_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11686}
11687
11688
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]11689/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]11690 * Local variables:
11691 * c-indent-level: 8
11692 * c-basic-offset: 8
11693 * End:
11694 */