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git01.mediatek.com / haproxy / 1c3a612d9940cb509b57a5cbb4a0320a5457e3f4 / . / src / proto_http.c
blob: dcf09c80cf05c00228293daeba4a2c349d7f5b2a [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]28#include <common/appsession.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]29#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]30#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]31#include <common/compat.h>
32#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]33#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/memory.h>
35#include <common/mini-clist.h>
36#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]37#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]38#include <common/time.h>
39#include <common/uri_auth.h>
40#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]41
42#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]46#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]47#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]48#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]49#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]50#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]51#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]52#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]54#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]55#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]56#include <proto/hdr_idx.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]57#include <proto/pattern.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]58#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]59#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]60#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]61#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]62#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]63#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]64#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]65#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]66#include <proto/task.h>
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]67#include <proto/pattern.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]68
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]69const char HTTP_100[] =
70 "HTTP/1.1 100 Continue\r\n\r\n";
71
72const struct chunk http_100_chunk = {
73 .str = (char *)&HTTP_100,
74 .len = sizeof(HTTP_100)-1
75};
76
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]77/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]78const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]79 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]80 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]81 "Location: "; /* not terminated since it will be concatenated with the URL */
82
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]83const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]84 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]85 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]86 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]87 "Location: "; /* not terminated since it will be concatenated with the URL */
88
89/* same as 302 except that the browser MUST retry with the GET method */
90const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]91 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]92 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]93 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]94 "Location: "; /* not terminated since it will be concatenated with the URL */
95
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]96
97/* same as 302 except that the browser MUST retry with the same method */
98const char *HTTP_307 =
99 "HTTP/1.1 307 Temporary Redirect\r\n"
100 "Cache-Control: no-cache\r\n"
101 "Content-length: 0\r\n"
102 "Location: "; /* not terminated since it will be concatenated with the URL */
103
104/* same as 301 except that the browser MUST retry with the same method */
105const char *HTTP_308 =
106 "HTTP/1.1 308 Permanent Redirect\r\n"
107 "Content-length: 0\r\n"
108 "Location: "; /* not terminated since it will be concatenated with the URL */
109
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]110/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
111const char *HTTP_401_fmt =
112 "HTTP/1.0 401 Unauthorized\r\n"
113 "Cache-Control: no-cache\r\n"
114 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]115 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]116 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
117 "\r\n"
118 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
119
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]120const char *HTTP_407_fmt =
121 "HTTP/1.0 407 Unauthorized\r\n"
122 "Cache-Control: no-cache\r\n"
123 "Connection: close\r\n"
124 "Content-Type: text/html\r\n"
125 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
126 "\r\n"
Godbachb3016542014-12-17 16:32:05 +0800[diff] [blame]127 "<html><body><h1>407 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]128
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]129
130const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]131 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]132 [HTTP_ERR_400] = 400,
133 [HTTP_ERR_403] = 403,
134 [HTTP_ERR_408] = 408,
135 [HTTP_ERR_500] = 500,
136 [HTTP_ERR_502] = 502,
137 [HTTP_ERR_503] = 503,
138 [HTTP_ERR_504] = 504,
139};
140
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]141static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]142 [HTTP_ERR_200] =
143 "HTTP/1.0 200 OK\r\n"
144 "Cache-Control: no-cache\r\n"
145 "Connection: close\r\n"
146 "Content-Type: text/html\r\n"
147 "\r\n"
148 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
149
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]150 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]151 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]152 "Cache-Control: no-cache\r\n"
153 "Connection: close\r\n"
154 "Content-Type: text/html\r\n"
155 "\r\n"
156 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
157
158 [HTTP_ERR_403] =
159 "HTTP/1.0 403 Forbidden\r\n"
160 "Cache-Control: no-cache\r\n"
161 "Connection: close\r\n"
162 "Content-Type: text/html\r\n"
163 "\r\n"
164 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
165
166 [HTTP_ERR_408] =
167 "HTTP/1.0 408 Request Time-out\r\n"
168 "Cache-Control: no-cache\r\n"
169 "Connection: close\r\n"
170 "Content-Type: text/html\r\n"
171 "\r\n"
172 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
173
174 [HTTP_ERR_500] =
175 "HTTP/1.0 500 Server Error\r\n"
176 "Cache-Control: no-cache\r\n"
177 "Connection: close\r\n"
178 "Content-Type: text/html\r\n"
179 "\r\n"
180 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
181
182 [HTTP_ERR_502] =
183 "HTTP/1.0 502 Bad Gateway\r\n"
184 "Cache-Control: no-cache\r\n"
185 "Connection: close\r\n"
186 "Content-Type: text/html\r\n"
187 "\r\n"
188 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
189
190 [HTTP_ERR_503] =
191 "HTTP/1.0 503 Service Unavailable\r\n"
192 "Cache-Control: no-cache\r\n"
193 "Connection: close\r\n"
194 "Content-Type: text/html\r\n"
195 "\r\n"
196 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
197
198 [HTTP_ERR_504] =
199 "HTTP/1.0 504 Gateway Time-out\r\n"
200 "Cache-Control: no-cache\r\n"
201 "Connection: close\r\n"
202 "Content-Type: text/html\r\n"
203 "\r\n"
204 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
205
206};
207
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]208/* status codes available for the stats admin page (strictly 4 chars length) */
209const char *stat_status_codes[STAT_STATUS_SIZE] = {
210 [STAT_STATUS_DENY] = "DENY",
211 [STAT_STATUS_DONE] = "DONE",
212 [STAT_STATUS_ERRP] = "ERRP",
213 [STAT_STATUS_EXCD] = "EXCD",
214 [STAT_STATUS_NONE] = "NONE",
215 [STAT_STATUS_PART] = "PART",
216 [STAT_STATUS_UNKN] = "UNKN",
217};
218
219
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]220/* List head of all known action keywords for "http-request" */
221struct http_req_action_kw_list http_req_keywords = {
222 .list = LIST_HEAD_INIT(http_req_keywords.list)
223};
224
225/* List head of all known action keywords for "http-response" */
226struct http_res_action_kw_list http_res_keywords = {
227 .list = LIST_HEAD_INIT(http_res_keywords.list)
228};
229
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]230/* We must put the messages here since GCC cannot initialize consts depending
231 * on strlen().
232 */
233struct chunk http_err_chunks[HTTP_ERR_SIZE];
234
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]235/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
236static struct hdr_ctx static_hdr_ctx;
237
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]238#define FD_SETS_ARE_BITFIELDS
239#ifdef FD_SETS_ARE_BITFIELDS
240/*
241 * This map is used with all the FD_* macros to check whether a particular bit
242 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
243 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
244 * byte should be encoded. Be careful to always pass bytes from 0 to 255
245 * exclusively to the macros.
246 */
247fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
248fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]249fd_set http_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]250
251#else
252#error "Check if your OS uses bitfields for fd_sets"
253#endif
254
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]255static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn);
256
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]257void init_proto_http()
258{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]259 int i;
260 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]261 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]262
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]263 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
264 if (!http_err_msgs[msg]) {
265 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
266 abort();
267 }
268
269 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
270 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
271 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]272
273 /* initialize the log header encoding map : '{|}"#' should be encoded with
274 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
275 * URL encoding only requires '"', '#' to be encoded as well as non-
276 * printable characters above.
277 */
278 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
279 memset(url_encode_map, 0, sizeof(url_encode_map));
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]280 memset(http_encode_map, 0, sizeof(url_encode_map));
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]281 for (i = 0; i < 32; i++) {
282 FD_SET(i, hdr_encode_map);
283 FD_SET(i, url_encode_map);
284 }
285 for (i = 127; i < 256; i++) {
286 FD_SET(i, hdr_encode_map);
287 FD_SET(i, url_encode_map);
288 }
289
290 tmp = "\"#{|}";
291 while (*tmp) {
292 FD_SET(*tmp, hdr_encode_map);
293 tmp++;
294 }
295
296 tmp = "\"#";
297 while (*tmp) {
298 FD_SET(*tmp, url_encode_map);
299 tmp++;
300 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]301
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]302 /* initialize the http header encoding map. The draft httpbis define the
303 * header content as:
304 *
305 * HTTP-message = start-line
306 * *( header-field CRLF )
307 * CRLF
308 * [ message-body ]
309 * header-field = field-name ":" OWS field-value OWS
310 * field-value = *( field-content / obs-fold )
311 * field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
312 * obs-fold = CRLF 1*( SP / HTAB )
313 * field-vchar = VCHAR / obs-text
314 * VCHAR = %x21-7E
315 * obs-text = %x80-FF
316 *
317 * All the chars are encoded except "VCHAR", "obs-text", SP and HTAB.
318 * The encoded chars are form 0x00 to 0x08, 0x0a to 0x1f and 0x7f. The
319 * "obs-fold" is volontary forgotten because haproxy remove this.
320 */
321 memset(http_encode_map, 0, sizeof(http_encode_map));
322 for (i = 0x00; i <= 0x08; i++)
323 FD_SET(i, http_encode_map);
324 for (i = 0x0a; i <= 0x1f; i++)
325 FD_SET(i, http_encode_map);
326 FD_SET(0x7f, http_encode_map);
327
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]328 /* memory allocations */
329 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]330 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]331}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]332
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]333/*
334 * We have 26 list of methods (1 per first letter), each of which can have
335 * up to 3 entries (2 valid, 1 null).
336 */
337struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]338 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]339 int len;
340 const char text[8];
341};
342
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]343const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]344 ['C' - 'A'] = {
345 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
346 },
347 ['D' - 'A'] = {
348 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
349 },
350 ['G' - 'A'] = {
351 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
352 },
353 ['H' - 'A'] = {
354 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
355 },
356 ['P' - 'A'] = {
357 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
358 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
359 },
360 ['T' - 'A'] = {
361 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
362 },
363 /* rest is empty like this :
364 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
365 */
366};
367
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]368const struct http_method_name http_known_methods[HTTP_METH_OTHER] = {
369 [HTTP_METH_NONE] = { "", 0 },
370 [HTTP_METH_OPTIONS] = { "OPTIONS", 7 },
371 [HTTP_METH_GET] = { "GET", 3 },
372 [HTTP_METH_HEAD] = { "HEAD", 4 },
373 [HTTP_METH_POST] = { "POST", 4 },
374 [HTTP_METH_PUT] = { "PUT", 3 },
375 [HTTP_METH_DELETE] = { "DELETE", 6 },
376 [HTTP_METH_TRACE] = { "TRACE", 5 },
377 [HTTP_METH_CONNECT] = { "CONNECT", 7 },
378};
379
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]380/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]381 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]382 * RFC2616 for those chars.
383 */
384
385const char http_is_spht[256] = {
386 [' '] = 1, ['\t'] = 1,
387};
388
389const char http_is_crlf[256] = {
390 ['\r'] = 1, ['\n'] = 1,
391};
392
393const char http_is_lws[256] = {
394 [' '] = 1, ['\t'] = 1,
395 ['\r'] = 1, ['\n'] = 1,
396};
397
398const char http_is_sep[256] = {
399 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
400 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
401 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
402 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
403 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
404};
405
406const char http_is_ctl[256] = {
407 [0 ... 31] = 1,
408 [127] = 1,
409};
410
411/*
412 * A token is any ASCII char that is neither a separator nor a CTL char.
413 * Do not overwrite values in assignment since gcc-2.95 will not handle
414 * them correctly. Instead, define every non-CTL char's status.
415 */
416const char http_is_token[256] = {
417 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
418 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
419 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
420 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
421 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
422 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
423 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
424 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
425 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
426 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
427 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
428 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
429 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
430 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
431 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
432 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
433 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
434 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
435 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
436 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
437 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
438 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
439 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
440 ['|'] = 1, ['}'] = 0, ['~'] = 1,
441};
442
443
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]444/*
445 * An http ver_token is any ASCII which can be found in an HTTP version,
446 * which includes 'H', 'T', 'P', '/', '.' and any digit.
447 */
448const char http_is_ver_token[256] = {
449 ['.'] = 1, ['/'] = 1,
450 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
451 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
452 ['H'] = 1, ['P'] = 1, ['T'] = 1,
453};
454
455
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]456/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]457 * Adds a header and its CRLF at the tail of the message's buffer, just before
458 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]459 * The header is also automatically added to the index <hdr_idx>, and the end
460 * of headers is automatically adjusted. The number of bytes added is returned
461 * on success, otherwise <0 is returned indicating an error.
462 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]463int http_header_add_tail(struct http_msg *msg, struct hdr_idx *hdr_idx, const char *text)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]464{
465 int bytes, len;
466
467 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]468 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]469 if (!bytes)
470 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]471 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]472 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
473}
474
475/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]476 * Adds a header and its CRLF at the tail of the message's buffer, just before
477 * the last CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]478 * the buffer is only opened and the space reserved, but nothing is copied.
479 * The header is also automatically added to the index <hdr_idx>, and the end
480 * of headers is automatically adjusted. The number of bytes added is returned
481 * on success, otherwise <0 is returned indicating an error.
482 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]483int http_header_add_tail2(struct http_msg *msg,
484 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]485{
486 int bytes;
487
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]488 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]489 if (!bytes)
490 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]491 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]492 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
493}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]494
495/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]496 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
497 * If so, returns the position of the first non-space character relative to
498 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
499 * to return a pointer to the place after the first space. Returns 0 if the
500 * header name does not match. Checks are case-insensitive.
501 */
502int http_header_match2(const char *hdr, const char *end,
503 const char *name, int len)
504{
505 const char *val;
506
507 if (hdr + len >= end)
508 return 0;
509 if (hdr[len] != ':')
510 return 0;
511 if (strncasecmp(hdr, name, len) != 0)
512 return 0;
513 val = hdr + len + 1;
514 while (val < end && HTTP_IS_SPHT(*val))
515 val++;
516 if ((val >= end) && (len + 2 <= end - hdr))
517 return len + 2; /* we may replace starting from second space */
518 return val - hdr;
519}
520
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]521/* Find the first or next occurrence of header <name> in message buffer <sol>
522 * using headers index <idx>, and return it in the <ctx> structure. This
523 * structure holds everything necessary to use the header and find next
524 * occurrence. If its <idx> member is 0, the header is searched from the
525 * beginning. Otherwise, the next occurrence is returned. The function returns
526 * 1 when it finds a value, and 0 when there is no more. It is very similar to
527 * http_find_header2() except that it is designed to work with full-line headers
528 * whose comma is not a delimiter but is part of the syntax. As a special case,
529 * if ctx->val is NULL when searching for a new values of a header, the current
530 * header is rescanned. This allows rescanning after a header deletion.
531 */
532int http_find_full_header2(const char *name, int len,
533 char *sol, struct hdr_idx *idx,
534 struct hdr_ctx *ctx)
535{
536 char *eol, *sov;
537 int cur_idx, old_idx;
538
539 cur_idx = ctx->idx;
540 if (cur_idx) {
541 /* We have previously returned a header, let's search another one */
542 sol = ctx->line;
543 eol = sol + idx->v[cur_idx].len;
544 goto next_hdr;
545 }
546
547 /* first request for this header */
548 sol += hdr_idx_first_pos(idx);
549 old_idx = 0;
550 cur_idx = hdr_idx_first_idx(idx);
551 while (cur_idx) {
552 eol = sol + idx->v[cur_idx].len;
553
554 if (len == 0) {
555 /* No argument was passed, we want any header.
556 * To achieve this, we simply build a fake request. */
557 while (sol + len < eol && sol[len] != ':')
558 len++;
559 name = sol;
560 }
561
562 if ((len < eol - sol) &&
563 (sol[len] == ':') &&
564 (strncasecmp(sol, name, len) == 0)) {
565 ctx->del = len;
566 sov = sol + len + 1;
567 while (sov < eol && http_is_lws[(unsigned char)*sov])
568 sov++;
569
570 ctx->line = sol;
571 ctx->prev = old_idx;
572 ctx->idx = cur_idx;
573 ctx->val = sov - sol;
574 ctx->tws = 0;
575 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
576 eol--;
577 ctx->tws++;
578 }
579 ctx->vlen = eol - sov;
580 return 1;
581 }
582 next_hdr:
583 sol = eol + idx->v[cur_idx].cr + 1;
584 old_idx = cur_idx;
585 cur_idx = idx->v[cur_idx].next;
586 }
587 return 0;
588}
589
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]590/* Find the end of the header value contained between <s> and <e>. See RFC2616,
591 * par 2.2 for more information. Note that it requires a valid header to return
592 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]593 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]594char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]595{
596 int quoted, qdpair;
597
598 quoted = qdpair = 0;
599 for (; s < e; s++) {
600 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]601 else if (quoted) {
602 if (*s == '\\') qdpair = 1;
603 else if (*s == '"') quoted = 0;
604 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]605 else if (*s == '"') quoted = 1;
606 else if (*s == ',') return s;
607 }
608 return s;
609}
610
611/* Find the first or next occurrence of header <name> in message buffer <sol>
612 * using headers index <idx>, and return it in the <ctx> structure. This
613 * structure holds everything necessary to use the header and find next
614 * occurrence. If its <idx> member is 0, the header is searched from the
615 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]616 * 1 when it finds a value, and 0 when there is no more. It is designed to work
617 * with headers defined as comma-separated lists. As a special case, if ctx->val
618 * is NULL when searching for a new values of a header, the current header is
619 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]620 */
621int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]622 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]623 struct hdr_ctx *ctx)
624{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]625 char *eol, *sov;
626 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]627
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]628 cur_idx = ctx->idx;
629 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]630 /* We have previously returned a value, let's search
631 * another one on the same line.
632 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]633 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]634 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]635 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]636 eol = sol + idx->v[cur_idx].len;
637
638 if (sov >= eol)
639 /* no more values in this header */
640 goto next_hdr;
641
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]642 /* values remaining for this header, skip the comma but save it
643 * for later use (eg: for header deletion).
644 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]645 sov++;
646 while (sov < eol && http_is_lws[(unsigned char)*sov])
647 sov++;
648
649 goto return_hdr;
650 }
651
652 /* first request for this header */
653 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]654 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]655 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]656 while (cur_idx) {
657 eol = sol + idx->v[cur_idx].len;
658
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]659 if (len == 0) {
660 /* No argument was passed, we want any header.
661 * To achieve this, we simply build a fake request. */
662 while (sol + len < eol && sol[len] != ':')
663 len++;
664 name = sol;
665 }
666
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]667 if ((len < eol - sol) &&
668 (sol[len] == ':') &&
669 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]670 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]671 sov = sol + len + 1;
672 while (sov < eol && http_is_lws[(unsigned char)*sov])
673 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]674
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]675 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]676 ctx->prev = old_idx;
677 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]678 ctx->idx = cur_idx;
679 ctx->val = sov - sol;
680
681 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]682 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]683 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]684 eol--;
685 ctx->tws++;
686 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]687 ctx->vlen = eol - sov;
688 return 1;
689 }
690 next_hdr:
691 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]692 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]693 cur_idx = idx->v[cur_idx].next;
694 }
695 return 0;
696}
697
698int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]699 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]700 struct hdr_ctx *ctx)
701{
702 return http_find_header2(name, strlen(name), sol, idx, ctx);
703}
704
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]705/* Remove one value of a header. This only works on a <ctx> returned by one of
706 * the http_find_header functions. The value is removed, as well as surrounding
707 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]708 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]709 * message <msg>. The new index is returned. If it is zero, it means there is
710 * no more header, so any processing may stop. The ctx is always left in a form
711 * that can be handled by http_find_header2() to find next occurrence.
712 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]713int http_remove_header2(struct http_msg *msg, struct hdr_idx *idx, struct hdr_ctx *ctx)
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]714{
715 int cur_idx = ctx->idx;
716 char *sol = ctx->line;
717 struct hdr_idx_elem *hdr;
718 int delta, skip_comma;
719
720 if (!cur_idx)
721 return 0;
722
723 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]724 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]725 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]726 delta = buffer_replace2(msg->chn->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]727 http_msg_move_end(msg, delta);
728 idx->used--;
729 hdr->len = 0; /* unused entry */
730 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]731 if (idx->tail == ctx->idx)
732 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]733 ctx->idx = ctx->prev; /* walk back to the end of previous header */
Willy Tarreau14acc652015-01-07 17:23:50 +0100[diff] [blame]734 ctx->line -= idx->v[ctx->idx].len + idx->v[ctx->idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]735 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]736 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]737 return ctx->idx;
738 }
739
740 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]741 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
742 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]743 */
744
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]745 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]746 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]747 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]748 NULL, 0);
749 hdr->len += delta;
750 http_msg_move_end(msg, delta);
751 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]752 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]753 return ctx->idx;
754}
755
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]756/* This function handles a server error at the stream interface level. The
757 * stream interface is assumed to be already in a closed state. An optional
758 * message is copied into the input buffer, and an HTTP status code stored.
759 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]760 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]761 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]762static void http_server_error(struct session *s, struct stream_interface *si,
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]763 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]764{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]765 channel_auto_read(si->ob);
766 channel_abort(si->ob);
767 channel_auto_close(si->ob);
768 channel_erase(si->ob);
769 channel_auto_close(si->ib);
770 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]771 if (status > 0 && msg) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]772 s->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]773 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]774 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]775 if (!(s->flags & SN_ERR_MASK))
776 s->flags |= err;
777 if (!(s->flags & SN_FINST_MASK))
778 s->flags |= finst;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]779}
780
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]781/* This function returns the appropriate error location for the given session
782 * and message.
783 */
784
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]785struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]786{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]787 if (s->be->errmsg[msgnum].str)
788 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]789 else if (s->fe->errmsg[msgnum].str)
790 return &s->fe->errmsg[msgnum];
791 else
792 return &http_err_chunks[msgnum];
793}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]794
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]795/*
796 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
797 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
798 */
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]799enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]800{
801 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]802 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]803
804 m = ((unsigned)*str - 'A');
805
806 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]807 for (h = http_methods[m]; h->len > 0; h++) {
808 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]809 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]810 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]811 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]812 };
813 return HTTP_METH_OTHER;
814 }
815 return HTTP_METH_NONE;
816
817}
818
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]819/* Parse the URI from the given transaction (which is assumed to be in request
820 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
821 * It is returned otherwise.
822 */
823static char *
824http_get_path(struct http_txn *txn)
825{
826 char *ptr, *end;
827
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]828 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]829 end = ptr + txn->req.sl.rq.u_l;
830
831 if (ptr >= end)
832 return NULL;
833
834 /* RFC2616, par. 5.1.2 :
835 * Request-URI = "*" | absuri | abspath | authority
836 */
837
838 if (*ptr == '*')
839 return NULL;
840
841 if (isalpha((unsigned char)*ptr)) {
842 /* this is a scheme as described by RFC3986, par. 3.1 */
843 ptr++;
844 while (ptr < end &&
845 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
846 ptr++;
847 /* skip '://' */
848 if (ptr == end || *ptr++ != ':')
849 return NULL;
850 if (ptr == end || *ptr++ != '/')
851 return NULL;
852 if (ptr == end || *ptr++ != '/')
853 return NULL;
854 }
855 /* skip [user[:passwd]@]host[:[port]] */
856
857 while (ptr < end && *ptr != '/')
858 ptr++;
859
860 if (ptr == end)
861 return NULL;
862
863 /* OK, we got the '/' ! */
864 return ptr;
865}
866
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]867/* Parse the URI from the given string and look for the "/" beginning the PATH.
868 * If not found, return NULL. It is returned otherwise.
869 */
870static char *
871http_get_path_from_string(char *str)
872{
873 char *ptr = str;
874
875 /* RFC2616, par. 5.1.2 :
876 * Request-URI = "*" | absuri | abspath | authority
877 */
878
879 if (*ptr == '*')
880 return NULL;
881
882 if (isalpha((unsigned char)*ptr)) {
883 /* this is a scheme as described by RFC3986, par. 3.1 */
884 ptr++;
885 while (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.')
886 ptr++;
887 /* skip '://' */
888 if (*ptr == '\0' || *ptr++ != ':')
889 return NULL;
890 if (*ptr == '\0' || *ptr++ != '/')
891 return NULL;
892 if (*ptr == '\0' || *ptr++ != '/')
893 return NULL;
894 }
895 /* skip [user[:passwd]@]host[:[port]] */
896
897 while (*ptr != '\0' && *ptr != ' ' && *ptr != '/')
898 ptr++;
899
900 if (*ptr == '\0' || *ptr == ' ')
901 return NULL;
902
903 /* OK, we got the '/' ! */
904 return ptr;
905}
906
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]907/* Returns a 302 for a redirectable request that reaches a server working in
908 * in redirect mode. This may only be called just after the stream interface
909 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
910 * follow normal proxy processing. NOTE: this function is designed to support
911 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]912 */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]913void http_perform_server_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]914{
915 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]916 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]917 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]918 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]919
920 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]921 trash.len = strlen(HTTP_302);
922 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]923
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]924 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]925
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]926 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]927 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]928 return;
929
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]930 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]931 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]932 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
933 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]934 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]935
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]936 /* 3: add the request URI. Since it was already forwarded, we need
937 * to temporarily rewind the buffer.
938 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]939 txn = &s->txn;
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]940 b_rew(s->req->buf, rewind = http_hdr_rewind(&txn->req));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]941
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]942 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]943 len = buffer_count(s->req->buf, path, b_ptr(s->req->buf, txn->req.sl.rq.u + txn->req.sl.rq.u_l));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]944
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]945 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]946
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]947 if (!path)
948 return;
949
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]950 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]951 return;
952
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]953 memcpy(trash.str + trash.len, path, len);
954 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]955
956 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]957 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
958 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]959 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]960 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
961 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]962 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]963
964 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]965 si_shutr(si);
966 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]967 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]968 si->state = SI_ST_CLO;
969
970 /* send the message */
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]971 http_server_error(s, si, SN_ERR_LOCAL, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]972
973 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]974 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500[diff] [blame]975 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]976}
977
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]978/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]979 * that the server side is closed. Note that err_type is actually a
980 * bitmask, where almost only aborts may be cumulated with other
981 * values. We consider that aborted operations are more important
982 * than timeouts or errors due to the fact that nobody else in the
983 * logs might explain incomplete retries. All others should avoid
984 * being cumulated. It should normally not be possible to have multiple
985 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]986 * Note that connection errors appearing on the second request of a keep-alive
987 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]988 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]989void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]990{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]991 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]992
993 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]994 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]995 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]996 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]997 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]998 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
999 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1000 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1001 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1002 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1003 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1004 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1005 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1006 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1007 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1008 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
1009 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1010 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1011 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau36346242014-02-24 18:26:30 +0100[diff] [blame]1012 503, (s->flags & SN_SRV_REUSED) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1013 http_error_message(s, HTTP_ERR_503));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]1014 else if (err_type & SI_ET_CONN_RES)
1015 http_server_error(s, si, SN_ERR_RESOURCE, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1016 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
1017 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1018 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1019 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1020 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1021}
1022
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1023extern const char sess_term_cond[8];
1024extern const char sess_fin_state[8];
1025extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1026struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]1027struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]1028struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1029
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1030/*
1031 * Capture headers from message starting at <som> according to header list
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1032 * <cap_hdr>, and fill the <cap> pointers appropriately.
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1033 */
1034void capture_headers(char *som, struct hdr_idx *idx,
1035 char **cap, struct cap_hdr *cap_hdr)
1036{
1037 char *eol, *sol, *col, *sov;
1038 int cur_idx;
1039 struct cap_hdr *h;
1040 int len;
1041
1042 sol = som + hdr_idx_first_pos(idx);
1043 cur_idx = hdr_idx_first_idx(idx);
1044
1045 while (cur_idx) {
1046 eol = sol + idx->v[cur_idx].len;
1047
1048 col = sol;
1049 while (col < eol && *col != ':')
1050 col++;
1051
1052 sov = col + 1;
1053 while (sov < eol && http_is_lws[(unsigned char)*sov])
1054 sov++;
1055
1056 for (h = cap_hdr; h; h = h->next) {
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1057 if (h->namelen && (h->namelen == col - sol) &&
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1058 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1059 if (cap[h->index] == NULL)
1060 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1061 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1062
1063 if (cap[h->index] == NULL) {
1064 Alert("HTTP capture : out of memory.\n");
1065 continue;
1066 }
1067
1068 len = eol - sov;
1069 if (len > h->len)
1070 len = h->len;
1071
1072 memcpy(cap[h->index], sov, len);
1073 cap[h->index][len]=0;
1074 }
1075 }
1076 sol = eol + idx->v[cur_idx].cr + 1;
1077 cur_idx = idx->v[cur_idx].next;
1078 }
1079}
1080
1081
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1082/* either we find an LF at <ptr> or we jump to <bad>.
1083 */
1084#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1085
1086/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1087 * otherwise to <http_msg_ood> with <state> set to <st>.
1088 */
1089#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1090 ptr++; \
1091 if (likely(ptr < end)) \
1092 goto good; \
1093 else { \
1094 state = (st); \
1095 goto http_msg_ood; \
1096 } \
1097 } while (0)
1098
1099
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1100/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1101 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1102 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1103 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1104 * will give undefined results.
1105 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1106 * and that msg->sol points to the beginning of the response.
1107 * If a complete line is found (which implies that at least one CR or LF is
1108 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1109 * returned indicating an incomplete line (which does not mean that parts have
1110 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1111 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1112 * upon next call.
1113 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1114 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1115 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1116 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1117 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1118 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1119const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1120 enum ht_state state, const char *ptr, const char *end,
1121 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1122{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1123 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1124
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1125 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1126 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1127 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1128 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1129 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1130
1131 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1132 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1133 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1134 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1135 state = HTTP_MSG_ERROR;
1136 break;
1137
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1138 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1139 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1140 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1141 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1142 goto http_msg_rpcode;
1143 }
1144 if (likely(HTTP_IS_SPHT(*ptr)))
1145 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1146 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1147 state = HTTP_MSG_ERROR;
1148 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1149
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1150 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1151 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1152 if (likely(!HTTP_IS_LWS(*ptr)))
1153 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1154
1155 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1156 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1157 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1158 }
1159
1160 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1161 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1162 http_msg_rsp_reason:
1163 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1164 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1165 msg->sl.st.r_l = 0;
1166 goto http_msg_rpline_eol;
1167
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1168 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1169 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1170 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1171 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1172 goto http_msg_rpreason;
1173 }
1174 if (likely(HTTP_IS_SPHT(*ptr)))
1175 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1176 /* so it's a CR/LF, so there is no reason phrase */
1177 goto http_msg_rsp_reason;
1178
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1179 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1180 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1181 if (likely(!HTTP_IS_CRLF(*ptr)))
1182 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1183 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1184 http_msg_rpline_eol:
1185 /* We have seen the end of line. Note that we do not
1186 * necessarily have the \n yet, but at least we know that we
1187 * have EITHER \r OR \n, otherwise the response would not be
1188 * complete. We can then record the response length and return
1189 * to the caller which will be able to register it.
1190 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1191 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1192 return ptr;
1193
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1194 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1195#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1196 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1197 exit(1);
1198#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1199 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1200 }
1201
1202 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1203 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1204 if (ret_state)
1205 *ret_state = state;
1206 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1207 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1208 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1209}
1210
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1211/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1212 * This function parses a request line between <ptr> and <end>, starting with
1213 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1214 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1215 * will give undefined results.
1216 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1217 * and that msg->sol points to the beginning of the request.
1218 * If a complete line is found (which implies that at least one CR or LF is
1219 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1220 * returned indicating an incomplete line (which does not mean that parts have
1221 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1222 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1223 * upon next call.
1224 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1225 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1226 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1227 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1228 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1229 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1230const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1231 enum ht_state state, const char *ptr, const char *end,
1232 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1233{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1234 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1235
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1236 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1237 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1238 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1239 if (likely(HTTP_IS_TOKEN(*ptr)))
1240 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1241
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1242 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1243 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1244 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1245 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1246
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1247 if (likely(HTTP_IS_CRLF(*ptr))) {
1248 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1249 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1250 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1251 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1252 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1253 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1254 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1255 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1256 msg->sl.rq.v_l = 0;
1257 goto http_msg_rqline_eol;
1258 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1259 state = HTTP_MSG_ERROR;
1260 break;
1261
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1262 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1263 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1264 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1265 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1266 goto http_msg_rquri;
1267 }
1268 if (likely(HTTP_IS_SPHT(*ptr)))
1269 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1270 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1271 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1272
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1273 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1274 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1275 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1276 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1277
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1278 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1279 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1280 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1281 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1282
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1283 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1284 /* non-ASCII chars are forbidden unless option
1285 * accept-invalid-http-request is enabled in the frontend.
1286 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1287 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1288 if (msg->err_pos < -1)
1289 goto invalid_char;
1290 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1291 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1292 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1293 }
1294
1295 if (likely(HTTP_IS_CRLF(*ptr))) {
1296 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1297 goto http_msg_req09_uri_e;
1298 }
1299
1300 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1301 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1302 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1303 state = HTTP_MSG_ERROR;
1304 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1305
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1306 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1307 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1308 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1309 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1310 goto http_msg_rqver;
1311 }
1312 if (likely(HTTP_IS_SPHT(*ptr)))
1313 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1314 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1315 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1316
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1317 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1318 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1319 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1320 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1321
1322 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1323 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1324 http_msg_rqline_eol:
1325 /* We have seen the end of line. Note that we do not
1326 * necessarily have the \n yet, but at least we know that we
1327 * have EITHER \r OR \n, otherwise the request would not be
1328 * complete. We can then record the request length and return
1329 * to the caller which will be able to register it.
1330 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1331 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1332 return ptr;
1333 }
1334
1335 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1336 state = HTTP_MSG_ERROR;
1337 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1338
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1339 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1340#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1341 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1342 exit(1);
1343#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1344 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1345 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1346
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1347 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1348 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1349 if (ret_state)
1350 *ret_state = state;
1351 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1352 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1353 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1354}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1355
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1356/*
1357 * Returns the data from Authorization header. Function may be called more
1358 * than once so data is stored in txn->auth_data. When no header is found
1359 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
Thierry FOURNIER98d96952014-01-23 12:13:02 +0100[diff] [blame]1360 * searching again for something we are unable to find anyway. However, if
1361 * the result if valid, the cache is not reused because we would risk to
1362 * have the credentials overwritten by another session in parallel.
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1363 */
1364
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1365/* This bufffer is initialized in the file 'src/haproxy.c'. This length is
1366 * set according to global.tune.bufsize.
1367 */
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1368char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1369
1370int
1371get_http_auth(struct session *s)
1372{
1373
1374 struct http_txn *txn = &s->txn;
1375 struct chunk auth_method;
1376 struct hdr_ctx ctx;
1377 char *h, *p;
1378 int len;
1379
1380#ifdef DEBUG_AUTH
1381 printf("Auth for session %p: %d\n", s, txn->auth.method);
1382#endif
1383
1384 if (txn->auth.method == HTTP_AUTH_WRONG)
1385 return 0;
1386
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1387 txn->auth.method = HTTP_AUTH_WRONG;
1388
1389 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1390
1391 if (txn->flags & TX_USE_PX_CONN) {
1392 h = "Proxy-Authorization";
1393 len = strlen(h);
1394 } else {
1395 h = "Authorization";
1396 len = strlen(h);
1397 }
1398
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1399 if (!http_find_header2(h, len, s->req->buf->p, &txn->hdr_idx, &ctx))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1400 return 0;
1401
1402 h = ctx.line + ctx.val;
1403
1404 p = memchr(h, ' ', ctx.vlen);
1405 if (!p || p == h)
1406 return 0;
1407
1408 chunk_initlen(&auth_method, h, 0, p-h);
1409 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1410
1411 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1412
1413 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1414 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1415
1416 if (len < 0)
1417 return 0;
1418
1419
1420 get_http_auth_buff[len] = '\0';
1421
1422 p = strchr(get_http_auth_buff, ':');
1423
1424 if (!p)
1425 return 0;
1426
1427 txn->auth.user = get_http_auth_buff;
1428 *p = '\0';
1429 txn->auth.pass = p+1;
1430
1431 txn->auth.method = HTTP_AUTH_BASIC;
1432 return 1;
1433 }
1434
1435 return 0;
1436}
1437
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1438
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1439/*
1440 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1441 * depending on the initial msg->msg_state. The caller is responsible for
1442 * ensuring that the message does not wrap. The function can be preempted
1443 * everywhere when data are missing and recalled at the exact same location
1444 * with no information loss. The message may even be realigned between two
1445 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1446 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1447 * fields. Note that msg->sol will be initialized after completing the first
1448 * state, so that none of the msg pointers has to be initialized prior to the
1449 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1450 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1451void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1452{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1453 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1454 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1455 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1456
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1457 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1458 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1459 ptr = buf->p + msg->next;
1460 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1461
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1462 if (unlikely(ptr >= end))
1463 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1464
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1465 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1466 /*
1467 * First, states that are specific to the response only.
1468 * We check them first so that request and headers are
1469 * closer to each other (accessed more often).
1470 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1471 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1472 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1473 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1474 /* we have a start of message, but we have to check
1475 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1476 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1477 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1478 if (unlikely(ptr != buf->p)) {
1479 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1480 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1481 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1482 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1483 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1484 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1485 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1486 hdr_idx_init(idx);
1487 state = HTTP_MSG_RPVER;
1488 goto http_msg_rpver;
1489 }
1490
1491 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1492 goto http_msg_invalid;
1493
1494 if (unlikely(*ptr == '\n'))
1495 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1496 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1497 /* stop here */
1498
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1499 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1500 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1501 EXPECT_LF_HERE(ptr, http_msg_invalid);
1502 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1503 /* stop here */
1504
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1505 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1506 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1507 case HTTP_MSG_RPVER_SP:
1508 case HTTP_MSG_RPCODE:
1509 case HTTP_MSG_RPCODE_SP:
1510 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1511 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1512 state, ptr, end,
1513 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1514 if (unlikely(!ptr))
1515 return;
1516
1517 /* we have a full response and we know that we have either a CR
1518 * or an LF at <ptr>.
1519 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1520 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1521
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1522 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1523 if (likely(*ptr == '\r'))
1524 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1525 goto http_msg_rpline_end;
1526
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1527 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1528 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1529 /* msg->sol must point to the first of CR or LF. */
1530 EXPECT_LF_HERE(ptr, http_msg_invalid);
1531 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1532 /* stop here */
1533
1534 /*
1535 * Second, states that are specific to the request only
1536 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1537 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1538 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1539 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1540 /* we have a start of message, but we have to check
1541 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1542 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1543 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1544 if (likely(ptr != buf->p)) {
1545 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1546 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1547 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1548 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1549 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1550 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1551 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1552 state = HTTP_MSG_RQMETH;
1553 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1554 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1555
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1556 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1557 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1558
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1559 if (unlikely(*ptr == '\n'))
1560 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1561 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1562 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1563
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1564 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1565 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1566 EXPECT_LF_HERE(ptr, http_msg_invalid);
1567 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1568 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1569
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1570 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1571 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1572 case HTTP_MSG_RQMETH_SP:
1573 case HTTP_MSG_RQURI:
1574 case HTTP_MSG_RQURI_SP:
1575 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1576 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1577 state, ptr, end,
1578 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1579 if (unlikely(!ptr))
1580 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1581
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1582 /* we have a full request and we know that we have either a CR
1583 * or an LF at <ptr>.
1584 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1585 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1586
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1587 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1588 if (likely(*ptr == '\r'))
1589 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1590 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1591
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1592 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1593 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1594 /* check for HTTP/0.9 request : no version information available.
1595 * msg->sol must point to the first of CR or LF.
1596 */
1597 if (unlikely(msg->sl.rq.v_l == 0))
1598 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1599
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1600 EXPECT_LF_HERE(ptr, http_msg_invalid);
1601 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1602 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1603
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1604 /*
1605 * Common states below
1606 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1607 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1608 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1609 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1610 if (likely(!HTTP_IS_CRLF(*ptr))) {
1611 goto http_msg_hdr_name;
1612 }
1613
1614 if (likely(*ptr == '\r'))
1615 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1616 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1617
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1618 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1619 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1620 /* assumes msg->sol points to the first char */
1621 if (likely(HTTP_IS_TOKEN(*ptr)))
1622 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1623
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1624 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1625 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1626
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1627 if (likely(msg->err_pos < -1) || *ptr == '\n')
1628 goto http_msg_invalid;
1629
1630 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1631 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1632
1633 /* and we still accept this non-token character */
1634 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1635
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1636 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1637 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1638 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1639 if (likely(HTTP_IS_SPHT(*ptr)))
1640 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1641
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1642 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1643 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1644
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1645 if (likely(!HTTP_IS_CRLF(*ptr))) {
1646 goto http_msg_hdr_val;
1647 }
1648
1649 if (likely(*ptr == '\r'))
1650 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1651 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1652
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1653 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1654 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1655 EXPECT_LF_HERE(ptr, http_msg_invalid);
1656 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1657
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1658 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1659 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1660 if (likely(HTTP_IS_SPHT(*ptr))) {
1661 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1662 for (; buf->p + msg->sov < ptr; msg->sov++)
1663 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1664 goto http_msg_hdr_l1_sp;
1665 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1666 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1667 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1668 goto http_msg_complete_header;
1669
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1670 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1671 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1672 /* assumes msg->sol points to the first char, and msg->sov
1673 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1674 */
1675 if (likely(!HTTP_IS_CRLF(*ptr)))
1676 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1677
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1678 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1679 /* Note: we could also copy eol into ->eoh so that we have the
1680 * real header end in case it ends with lots of LWS, but is this
1681 * really needed ?
1682 */
1683 if (likely(*ptr == '\r'))
1684 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1685 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1686
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1687 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1688 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1689 EXPECT_LF_HERE(ptr, http_msg_invalid);
1690 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1691
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1692 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1693 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1694 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1695 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1696 for (; buf->p + msg->eol < ptr; msg->eol++)
1697 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1698 goto http_msg_hdr_val;
1699 }
1700 http_msg_complete_header:
1701 /*
1702 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1703 * Assumes msg->sol points to the first char, msg->sov points
1704 * to the first character of the value and msg->eol to the
1705 * first CR or LF so we know how the line ends. We insert last
1706 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1707 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1708 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1709 idx, idx->tail) < 0))
1710 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1711
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1712 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1713 if (likely(!HTTP_IS_CRLF(*ptr))) {
1714 goto http_msg_hdr_name;
1715 }
1716
1717 if (likely(*ptr == '\r'))
1718 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1719 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1720
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1721 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1722 http_msg_last_lf:
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1723 /* Assumes msg->sol points to the first of either CR or LF.
1724 * Sets ->sov and ->next to the total header length, ->eoh to
1725 * the last CRLF, and ->eol to the last CRLF length (1 or 2).
1726 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1727 EXPECT_LF_HERE(ptr, http_msg_invalid);
1728 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1729 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1730 msg->eoh = msg->sol;
1731 msg->sol = 0;
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1732 msg->eol = msg->sov - msg->eoh;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1733 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1734 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1735
1736 case HTTP_MSG_ERROR:
1737 /* this may only happen if we call http_msg_analyser() twice with an error */
1738 break;
1739
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1740 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1741#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1742 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1743 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1744#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1745 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1746 }
1747 http_msg_ood:
1748 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1749 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1750 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1751 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1752
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1753 http_msg_invalid:
1754 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1755 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1756 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1757 return;
1758}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1759
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1760/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1761 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1762 * nothing is done and 1 is returned.
1763 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1764static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1765{
1766 int delta;
1767 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1768 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1769
1770 if (msg->sl.rq.v_l != 0)
1771 return 1;
1772
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1773 /* RFC 1945 allows only GET for HTTP/0.9 requests */
1774 if (txn->meth != HTTP_METH_GET)
1775 return 0;
1776
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1777 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1778 delta = 0;
1779
1780 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1781 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
1782 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1783 }
1784 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1785 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1786 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1787 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1788 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1789 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1790 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1791 NULL, NULL);
1792 if (unlikely(!cur_end))
1793 return 0;
1794
1795 /* we have a full HTTP/1.0 request now and we know that
1796 * we have either a CR or an LF at <ptr>.
1797 */
1798 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1799 return 1;
1800}
1801
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1802/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1803 * and "keep-alive" values. If we already know that some headers may safely
1804 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1805 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1806 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1807 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1808 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1809 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1810 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1811 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1812 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1813void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1814{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1815 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1816 const char *hdr_val = "Connection";
1817 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1818
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1819 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1820 return;
1821
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1822 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1823 hdr_val = "Proxy-Connection";
1824 hdr_len = 16;
1825 }
1826
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1827 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1828 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1829 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1830 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1831 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1832 if (to_del & 2)
1833 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1834 else
1835 txn->flags |= TX_CON_KAL_SET;
1836 }
1837 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1838 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1839 if (to_del & 1)
1840 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1841 else
1842 txn->flags |= TX_CON_CLO_SET;
1843 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1844 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1845 txn->flags |= TX_HDR_CONN_UPG;
1846 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1847 }
1848
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1849 txn->flags |= TX_HDR_CONN_PRS;
1850 return;
1851}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1852
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1853/* Apply desired changes on the Connection: header. Values may be removed and/or
1854 * added depending on the <wanted> flags, which are exclusively composed of
1855 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1856 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1857 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1858void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1859{
1860 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1861 const char *hdr_val = "Connection";
1862 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1863
1864 ctx.idx = 0;
1865
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1866
1867 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1868 hdr_val = "Proxy-Connection";
1869 hdr_len = 16;
1870 }
1871
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1872 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1873 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1874 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1875 if (wanted & TX_CON_KAL_SET)
1876 txn->flags |= TX_CON_KAL_SET;
1877 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1878 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1879 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1880 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1881 if (wanted & TX_CON_CLO_SET)
1882 txn->flags |= TX_CON_CLO_SET;
1883 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1884 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1885 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1886 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1887
1888 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1889 return;
1890
1891 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1892 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1893 hdr_val = "Connection: close";
1894 hdr_len = 17;
1895 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1896 hdr_val = "Proxy-Connection: close";
1897 hdr_len = 23;
1898 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1899 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1900 }
1901
1902 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1903 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1904 hdr_val = "Connection: keep-alive";
1905 hdr_len = 22;
1906 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1907 hdr_val = "Proxy-Connection: keep-alive";
1908 hdr_len = 28;
1909 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1910 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1911 }
1912 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1913}
1914
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]1915/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to
1916 * the first byte of data after the chunk size, so that we know we can forward
1917 * exactly msg->next bytes. msg->sol contains the exact number of bytes forming
1918 * the chunk size. That way it is always possible to differentiate between the
1919 * start of the body and the start of the data.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1920 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1921 * Note: this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1922 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1923static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1924{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1925 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1926 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1927 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1928 const char *end = buf->data + buf->size;
1929 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1930 unsigned int chunk = 0;
1931
1932 /* The chunk size is in the following form, though we are only
1933 * interested in the size and CRLF :
1934 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1935 */
1936 while (1) {
1937 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1938 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1939 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1940 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1941 if (c < 0) /* not a hex digit anymore */
1942 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1943 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1944 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1945 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1946 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1947 chunk = (chunk << 4) + c;
1948 }
1949
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1950 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1951 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1952 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1953
1954 while (http_is_spht[(unsigned char)*ptr]) {
1955 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1956 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1957 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1958 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1959 }
1960
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1961 /* Up to there, we know that at least one byte is present at *ptr. Check
1962 * for the end of chunk size.
1963 */
1964 while (1) {
1965 if (likely(HTTP_IS_CRLF(*ptr))) {
1966 /* we now have a CR or an LF at ptr */
1967 if (likely(*ptr == '\r')) {
1968 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1969 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1970 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1971 return 0;
1972 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1973
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1974 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1975 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1976 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1977 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1978 /* done */
1979 break;
1980 }
1981 else if (*ptr == ';') {
1982 /* chunk extension, ends at next CRLF */
1983 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1984 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1985 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1986 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1987
1988 while (!HTTP_IS_CRLF(*ptr)) {
1989 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1990 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1991 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1992 return 0;
1993 }
1994 /* we have a CRLF now, loop above */
1995 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1996 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1997 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1998 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1999 }
2000
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2001 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2002 * which may or may not be present. We save that into ->next,
2003 * and the number of bytes parsed into msg->sol.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2004 */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2005 msg->sol = ptr - ptr_old;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2006 if (unlikely(ptr < ptr_old))
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2007 msg->sol += buf->size;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2008 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2009 msg->chunk_len = chunk;
2010 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2011 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2012 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2013 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2014 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2015 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2016}
2017
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2018/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2019 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2020 * the trailers is found, it is automatically scheduled to be forwarded,
2021 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
2022 * If not enough data are available, the function does not change anything
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2023 * except maybe msg->next if it could parse some lines, and returns zero.
2024 * If a parse error is encountered, the function returns < 0 and does not
2025 * change anything except maybe msg->next. Note that the message must
2026 * already be in HTTP_MSG_TRAILERS state before calling this function,
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2027 * which implies that all non-trailers data have already been scheduled for
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2028 * forwarding, and that msg->next exactly matches the length of trailers
2029 * already parsed and not forwarded. It is also important to note that this
2030 * function is designed to be able to parse wrapped headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2031 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2032static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2033{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2034 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2035
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2036 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2037 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2038 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2039 const char *ptr = b_ptr(buf, msg->next);
2040 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2041 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2042
2043 /* scan current line and stop at LF or CRLF */
2044 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2045 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2046 return 0;
2047
2048 if (*ptr == '\n') {
2049 if (!p1)
2050 p1 = ptr;
2051 p2 = ptr;
2052 break;
2053 }
2054
2055 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2056 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2057 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2058 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2059 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2060 p1 = ptr;
2061 }
2062
2063 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2064 if (ptr >= buf->data + buf->size)
2065 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2066 }
2067
2068 /* after LF; point to beginning of next line */
2069 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2070 if (p2 >= buf->data + buf->size)
2071 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2072
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2073 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2074 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2075 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2076
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2077 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2078 /* LF/CRLF at beginning of line => end of trailers at p2.
2079 * Everything was scheduled for forwarding, there's nothing
2080 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]2081 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2082 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2083 msg->msg_state = HTTP_MSG_DONE;
2084 return 1;
2085 }
2086 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2087 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2088 }
2089}
2090
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2091/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF
2092 * or a possible LF alone at the end of a chunk. It automatically adjusts
2093 * msg->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2094 * Note that the caller must ensure that ->p points to the first byte to parse.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2095 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
2096 * not enough data are available, the function does not change anything and
2097 * returns zero. If a parse error is encountered, the function returns < 0 and
2098 * does not change anything. Note: this function is designed to parse wrapped
2099 * CRLF at the end of the buffer.
2100 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2101static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2102{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2103 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2104 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2105 int bytes;
2106
2107 /* NB: we'll check data availabilty at the end. It's not a
2108 * problem because whatever we match first will be checked
2109 * against the correct length.
2110 */
2111 bytes = 1;
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2112 ptr = b_ptr(buf, msg->next);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2113 if (*ptr == '\r') {
2114 bytes++;
2115 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2116 if (ptr >= buf->data + buf->size)
2117 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2118 }
2119
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2120 if (msg->next + bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2121 return 0;
2122
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2123 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2124 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2125 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2126 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2127
2128 ptr++;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2129 if (unlikely(ptr >= buf->data + buf->size))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2130 ptr = buf->data;
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2131 /* Advance ->next to allow the CRLF to be forwarded */
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2132 msg->next += bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2133 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
2134 return 1;
2135}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2136
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2137/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2138 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2139 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2140 * Unparsable qvalues return 1000 as "q=1.000".
2141 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2142int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2143{
2144 int q = 1000;
2145
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]2146 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2147 goto out;
2148 q = (*qvalue++ - '0') * 1000;
2149
2150 if (*qvalue++ != '.')
2151 goto out;
2152
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]2153 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2154 goto out;
2155 q += (*qvalue++ - '0') * 100;
2156
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]2157 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2158 goto out;
2159 q += (*qvalue++ - '0') * 10;
2160
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]2161 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2162 goto out;
2163 q += (*qvalue++ - '0') * 1;
2164 out:
2165 if (q > 1000)
2166 q = 1000;
Willy Tarreau38b3aa52014-04-22 23:32:05 +0200[diff] [blame]2167 if (end)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2168 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2169 return q;
2170}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2171
2172/*
2173 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2174 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2175int select_compression_request_header(struct session *s, struct buffer *req)
2176{
2177 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2178 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2179 struct hdr_ctx ctx;
2180 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2181 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2182
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2183 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
2184 * unless they are known good (MSIE 6 with XP SP2, or MSIE 7 and later).
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2185 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
2186 */
2187 ctx.idx = 0;
2188 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
2189 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2190 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
2191 (ctx.vlen < 31 ||
2192 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
2193 ctx.line[ctx.val + 30] < '6' ||
2194 (ctx.line[ctx.val + 30] == '6' &&
2195 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
2196 s->comp_algo = NULL;
2197 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2198 }
2199
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2200 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2201 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2202 int best_q = 0;
2203
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2204 ctx.idx = 0;
2205 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2206 const char *qval;
2207 int q;
2208 int toklen;
2209
2210 /* try to isolate the token from the optional q-value */
2211 toklen = 0;
2212 while (toklen < ctx.vlen && http_is_token[(unsigned char)*(ctx.line + ctx.val + toklen)])
2213 toklen++;
2214
2215 qval = ctx.line + ctx.val + toklen;
2216 while (1) {
2217 while (qval < ctx.line + ctx.val + ctx.vlen && http_is_lws[(unsigned char)*qval])
2218 qval++;
2219
2220 if (qval >= ctx.line + ctx.val + ctx.vlen || *qval != ';') {
2221 qval = NULL;
2222 break;
2223 }
2224 qval++;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2225
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2226 while (qval < ctx.line + ctx.val + ctx.vlen && http_is_lws[(unsigned char)*qval])
2227 qval++;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2228
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2229 if (qval >= ctx.line + ctx.val + ctx.vlen) {
2230 qval = NULL;
2231 break;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2232 }
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2233 if (strncmp(qval, "q=", MIN(ctx.line + ctx.val + ctx.vlen - qval, 2)) == 0)
2234 break;
2235
2236 while (qval < ctx.line + ctx.val + ctx.vlen && *qval != ';')
2237 qval++;
2238 }
2239
2240 /* here we have qval pointing to the first "q=" attribute or NULL if not found */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2241 q = qval ? parse_qvalue(qval + 2, NULL) : 1000;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2242
2243 if (q <= best_q)
2244 continue;
2245
2246 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
2247 if (*(ctx.line + ctx.val) == '*' ||
2248 word_match(ctx.line + ctx.val, toklen, comp_algo->name, comp_algo->name_len)) {
2249 s->comp_algo = comp_algo;
2250 best_q = q;
2251 break;
2252 }
2253 }
2254 }
2255 }
2256
2257 /* remove all occurrences of the header when "compression offload" is set */
2258 if (s->comp_algo) {
2259 if ((s->be->comp && s->be->comp->offload) || (s->fe->comp && s->fe->comp->offload)) {
2260 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2261 ctx.idx = 0;
2262 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2263 http_remove_header2(msg, &txn->hdr_idx, &ctx);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2264 }
2265 }
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2266 return 1;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2267 }
2268
2269 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2270 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2271 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2272 if (comp_algo->add_data == identity_add_data) {
2273 s->comp_algo = comp_algo;
2274 return 1;
2275 }
2276 }
2277 }
2278
2279 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2280 return 0;
2281}
2282
2283/*
2284 * Selects a comression algorithm depending of the server response.
2285 */
2286int select_compression_response_header(struct session *s, struct buffer *res)
2287{
2288 struct http_txn *txn = &s->txn;
2289 struct http_msg *msg = &txn->rsp;
2290 struct hdr_ctx ctx;
2291 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2292
2293 /* no common compression algorithm was found in request header */
2294 if (s->comp_algo == NULL)
2295 goto fail;
2296
2297 /* HTTP < 1.1 should not be compressed */
Willy Tarreau72575502013-12-24 14:41:35 +0100[diff] [blame]2298 if (!(msg->flags & HTTP_MSGF_VER_11) || !(txn->req.flags & HTTP_MSGF_VER_11))
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2299 goto fail;
2300
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2301 /* 200 only */
2302 if (txn->status != 200)
2303 goto fail;
2304
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2305 /* Content-Length is null */
2306 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2307 goto fail;
2308
2309 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2310 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2311 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2312 goto fail;
2313
Willy Tarreau56e9ffa2013-01-05 16:20:35 +0100[diff] [blame]2314 /* no compression when Cache-Control: no-transform is present in the message */
2315 ctx.idx = 0;
2316 while (http_find_header2("Cache-Control", 13, res->p, &txn->hdr_idx, &ctx)) {
2317 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12))
2318 goto fail;
2319 }
2320
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2321 comp_type = NULL;
2322
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2323 /* we don't want to compress multipart content-types, nor content-types that are
2324 * not listed in the "compression type" directive if any. If no content-type was
2325 * found but configuration requires one, we don't compress either. Backend has
2326 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2327 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2328 ctx.idx = 0;
2329 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2330 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2331 goto fail;
2332
2333 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
2334 (s->fe->comp && (comp_type = s->fe->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2335 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2336 if (ctx.vlen >= comp_type->name_len &&
2337 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2338 /* this Content-Type should be compressed */
2339 break;
2340 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2341 /* this Content-Type should not be compressed */
2342 if (comp_type == NULL)
2343 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2344 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2345 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2346 else { /* no content-type header */
2347 if ((s->be->comp && s->be->comp->types) || (s->fe->comp && s->fe->comp->types))
2348 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2349 }
2350
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2351 /* limit compression rate */
2352 if (global.comp_rate_lim > 0)
2353 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2354 goto fail;
2355
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2356 /* limit cpu usage */
2357 if (idle_pct < compress_min_idle)
2358 goto fail;
2359
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2360 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2361 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2362 goto fail;
2363
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2364 s->flags |= SN_COMP_READY;
2365
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2366 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2367 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2368 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2369 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2370
2371 /* add Transfer-Encoding header */
2372 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2373 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2374
2375 /*
2376 * Add Content-Encoding header when it's not identity encoding.
2377 * RFC 2616 : Identity encoding: This content-coding is used only in the
2378 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2379 * header.
2380 */
2381 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2382 trash.len = 18;
2383 memcpy(trash.str, "Content-Encoding: ", trash.len);
2384 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2385 trash.len += s->comp_algo->name_len;
2386 trash.str[trash.len] = '\0';
2387 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2388 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2389 return 1;
2390
2391fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2392 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2393 return 0;
2394}
2395
Willy Tarreau2e47a3a2014-09-30 18:44:22 +0200[diff] [blame]2396void http_adjust_conn_mode(struct session *s, struct http_txn *txn, struct http_msg *msg)
2397{
2398 int tmp = TX_CON_WANT_KAL;
2399
2400 if (!((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
2401 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
2402 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
2403 tmp = TX_CON_WANT_TUN;
2404
2405 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
2406 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2407 tmp = TX_CON_WANT_TUN;
2408 }
2409
2410 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
2411 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
2412 /* option httpclose + server_close => forceclose */
2413 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
2414 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2415 tmp = TX_CON_WANT_CLO;
2416 else
2417 tmp = TX_CON_WANT_SCL;
2418 }
2419
2420 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
2421 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
2422 tmp = TX_CON_WANT_CLO;
2423
2424 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2425 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2426
2427 if (!(txn->flags & TX_HDR_CONN_PRS) &&
2428 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
2429 /* parse the Connection header and possibly clean it */
2430 int to_del = 0;
2431 if ((msg->flags & HTTP_MSGF_VER_11) ||
2432 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
2433 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
2434 to_del |= 2; /* remove "keep-alive" */
2435 if (!(msg->flags & HTTP_MSGF_VER_11))
2436 to_del |= 1; /* remove "close" */
2437 http_parse_connection_header(txn, msg, to_del);
2438 }
2439
2440 /* check if client or config asks for explicit close in KAL/SCL */
2441 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2442 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2443 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
2444 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
2445 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
2446 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
2447 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2448}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2449
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2450/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2451 * processing can continue on next analysers, or zero if it either needs more
2452 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2453 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2454 * when it has nothing left to do, and may remove any analyser when it wants to
2455 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2456 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2457int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2458{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2459 /*
2460 * We will parse the partial (or complete) lines.
2461 * We will check the request syntax, and also join multi-line
2462 * headers. An index of all the lines will be elaborated while
2463 * parsing.
2464 *
2465 * For the parsing, we use a 28 states FSM.
2466 *
2467 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2468 * req->buf->p = beginning of request
2469 * req->buf->p + msg->eoh = end of processed headers / start of current one
2470 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2471 * msg->eol = end of current header or line (LF or CRLF)
2472 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2473 *
2474 * At end of parsing, we may perform a capture of the error (if any), and
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]2475 * we will set a few fields (txn->meth, sn->flags/SN_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2476 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2477 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2478 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2479
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2480 int cur_idx;
2481 struct http_txn *txn = &s->txn;
2482 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2483 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2484
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2485 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]2486 now_ms, __FUNCTION__,
2487 s,
2488 req,
2489 req->rex, req->wex,
2490 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2491 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2492 req->analysers);
2493
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2494 /* we're speaking HTTP here, so let's speak HTTP to the client */
2495 s->srv_error = http_return_srv_error;
2496
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2497 /* There's a protected area at the end of the buffer for rewriting
2498 * purposes. We don't want to start to parse the request if the
2499 * protected area is affected, because we may have to move processed
2500 * data later, which is much more complicated.
2501 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2502 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2503 if (txn->flags & TX_NOT_FIRST) {
2504 if (unlikely(!channel_reserved(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2505 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2506 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2507 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2508 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2509 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2510 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2511 return 0;
2512 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2513 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2514 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2515 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2516 }
2517
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2518 /* Note that we have the same problem with the response ; we
2519 * may want to send a redirect, error or anything which requires
2520 * some spare space. So we'll ensure that we have at least
2521 * maxrewrite bytes available in the response buffer before
2522 * processing that one. This will only affect pipelined
2523 * keep-alive requests.
2524 */
2525 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2526 unlikely(!channel_reserved(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2527 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2528 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2529 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2530 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]2531 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2532 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2533 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2534 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2535 s->rep->flags |= CF_WAKE_WRITE;
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2536 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2537 return 0;
2538 }
2539 }
2540
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2541 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2542 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2543 }
2544
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2545 /* 1: we might have to print this header in debug mode */
2546 if (unlikely((global.mode & MODE_DEBUG) &&
2547 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau8767b132014-10-21 19:36:09 +0200[diff] [blame]2548 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2549 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2550
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2551 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2552 /* this is a bit complex : in case of error on the request line,
2553 * we know that rq.l is still zero, so we display only the part
2554 * up to the end of the line (truncated by debug_hdr).
2555 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2556 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2557 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2558
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2559 sol += hdr_idx_first_pos(&txn->hdr_idx);
2560 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2561
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2562 while (cur_idx) {
2563 eol = sol + txn->hdr_idx.v[cur_idx].len;
2564 debug_hdr("clihdr", s, sol, eol);
2565 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2566 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2567 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2568 }
2569
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2570
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2571 /*
2572 * Now we quickly check if we have found a full valid request.
2573 * If not so, we check the FD and buffer states before leaving.
2574 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2575 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2576 * requests are checked first. When waiting for a second request
2577 * on a keep-alive session, if we encounter and error, close, t/o,
2578 * we note the error in the session flags but don't set any state.
2579 * Since the error will be noted there, it will not be counted by
2580 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2581 * Last, we may increase some tracked counters' http request errors on
2582 * the cases that are deliberately the client's fault. For instance,
2583 * a timeout or connection reset is not counted as an error. However
2584 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2585 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2586
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2587 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2588 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2589 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2590 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2591 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2592 session_inc_http_req_ctr(s);
2593 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2594 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2595 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2596 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2597
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2598 /* 1: Since we are in header mode, if there's no space
2599 * left for headers, we won't be able to free more
2600 * later, so the session will never terminate. We
2601 * must terminate it now.
2602 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2603 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2604 /* FIXME: check if URI is set and return Status
2605 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2606 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2607 session_inc_http_req_ctr(s);
2608 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2609 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2610 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2611 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2612 goto return_bad_req;
2613 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2614
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2615 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2616 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2617 if (!(s->flags & SN_ERR_MASK))
2618 s->flags |= SN_ERR_CLICL;
2619
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2620 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2621 goto failed_keep_alive;
2622
Willy Tarreau1c3a6122015-05-01 15:37:53 +0200[diff] [blame^]2623 if (s->fe->options & PR_O_IGNORE_PRB)
2624 goto failed_keep_alive;
2625
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2626 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2627 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2628 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]2629 session_inc_http_err_ctr(s);
2630 }
2631
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2632 txn->status = 400;
2633 stream_int_retnclose(req->prod, NULL);
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_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2638 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2639 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2640 if (s->listener->counters)
2641 s->listener->counters->failed_req++;
2642
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2643 if (!(s->flags & SN_FINST_MASK))
2644 s->flags |= SN_FINST_R;
2645 return 0;
2646 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2647
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2648 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2649 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]2650 if (!(s->flags & SN_ERR_MASK))
2651 s->flags |= SN_ERR_CLITO;
2652
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2653 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2654 goto failed_keep_alive;
2655
Willy Tarreau1c3a6122015-05-01 15:37:53 +0200[diff] [blame^]2656 if (s->fe->options & PR_O_IGNORE_PRB)
2657 goto failed_keep_alive;
2658
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2659 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2660 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2661 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]2662 session_inc_http_err_ctr(s);
2663 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2664 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2665 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2666 msg->msg_state = HTTP_MSG_ERROR;
2667 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2668
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2669 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2670 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2671 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2672 if (s->listener->counters)
2673 s->listener->counters->failed_req++;
2674
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2675 if (!(s->flags & SN_FINST_MASK))
2676 s->flags |= SN_FINST_R;
2677 return 0;
2678 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2679
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2680 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2681 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2682 if (!(s->flags & SN_ERR_MASK))
2683 s->flags |= SN_ERR_CLICL;
2684
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2685 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2686 goto failed_keep_alive;
2687
Willy Tarreau1c3a6122015-05-01 15:37:53 +0200[diff] [blame^]2688 if (s->fe->options & PR_O_IGNORE_PRB)
2689 goto failed_keep_alive;
2690
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2691 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2692 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]2693 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2694 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2695 msg->msg_state = HTTP_MSG_ERROR;
2696 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2697
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2698 session_inc_http_err_ctr(s);
2699 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2700 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2701 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2702 if (s->listener->counters)
2703 s->listener->counters->failed_req++;
2704
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2705 if (!(s->flags & SN_FINST_MASK))
2706 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2707 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2708 }
2709
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2710 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2711 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2712 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2713#ifdef TCP_QUICKACK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]2714 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]2715 /* We need more data, we have to re-enable quick-ack in case we
2716 * previously disabled it, otherwise we might cause the client
2717 * to delay next data.
2718 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2719 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]2720 }
2721#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2722
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2723 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2724 /* If the client starts to talk, let's fall back to
2725 * request timeout processing.
2726 */
2727 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2728 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2729 }
2730
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2731 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2732 if (!tick_isset(req->analyse_exp)) {
2733 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2734 (txn->flags & TX_WAIT_NEXT_RQ) &&
2735 tick_isset(s->be->timeout.httpka))
2736 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2737 else
2738 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2739 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2740
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2741 /* we're not ready yet */
2742 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2743
2744 failed_keep_alive:
2745 /* Here we process low-level errors for keep-alive requests. In
2746 * short, if the request is not the first one and it experiences
2747 * a timeout, read error or shutdown, we just silently close so
2748 * that the client can try again.
2749 */
2750 txn->status = 0;
2751 msg->msg_state = HTTP_MSG_RQBEFORE;
2752 req->analysers = 0;
2753 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2754 s->logs.level = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2755 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2756 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2757 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2758 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2759
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2760 /* OK now we have a complete HTTP request with indexed headers. Let's
2761 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2762 * 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]2763 * 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]2764 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2765 * byte after the last LF. msg->sov points to the first byte of data.
2766 * msg->eol cannot be trusted because it may have been left uninitialized
2767 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2768 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2769
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2770 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2771 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2772
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2773 if (txn->flags & TX_WAIT_NEXT_RQ) {
2774 /* kill the pending keep-alive timeout */
2775 txn->flags &= ~TX_WAIT_NEXT_RQ;
2776 req->analyse_exp = TICK_ETERNITY;
2777 }
2778
2779
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2780 /* Maybe we found in invalid header name while we were configured not
2781 * to block on that, so we have to capture it now.
2782 */
2783 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2784 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]2785
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2786 /*
2787 * 1: identify the method
2788 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2789 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2790
2791 /* we can make use of server redirect on GET and HEAD */
2792 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2793 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2794
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2795 /*
2796 * 2: check if the URI matches the monitor_uri.
2797 * We have to do this for every request which gets in, because
2798 * the monitor-uri is defined by the frontend.
2799 */
2800 if (unlikely((s->fe->monitor_uri_len != 0) &&
2801 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2802 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2803 s->fe->monitor_uri,
2804 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2805 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2806 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2807 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2808 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2809
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2810 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2811 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2812
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2813 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2814 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2815 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]2816
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2817 ret = acl_pass(ret);
2818 if (cond->pol == ACL_COND_UNLESS)
2819 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2820
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2821 if (ret) {
2822 /* we fail this request, let's return 503 service unavail */
2823 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2824 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2825 if (!(s->flags & SN_ERR_MASK))
2826 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2827 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2828 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2829 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2830
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2831 /* nothing to fail, let's reply normaly */
2832 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2833 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2834 if (!(s->flags & SN_ERR_MASK))
2835 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2836 goto return_prx_cond;
2837 }
2838
2839 /*
2840 * 3: Maybe we have to copy the original REQURI for the logs ?
2841 * Note: we cannot log anymore if the request has been
2842 * classified as invalid.
2843 */
2844 if (unlikely(s->logs.logwait & LW_REQ)) {
2845 /* we have a complete HTTP request that we must log */
2846 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2847 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2848
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2849 if (urilen >= REQURI_LEN)
2850 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2851 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2852 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2853
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2854 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2855 s->do_log(s);
2856 } else {
2857 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2858 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2859 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2860
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2861 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2862 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2863 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2864
Willy Tarreau55645552015-05-01 13:26:00 +0200[diff] [blame]2865 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
2866 * exactly one digit "." one digit. This check may be disabled using
2867 * option accept-invalid-http-request.
2868 */
2869 if (!(s->fe->options2 & PR_O2_REQBUG_OK)) {
2870 if (msg->sl.rq.v_l != 8) {
2871 msg->err_pos = msg->sl.rq.v;
2872 goto return_bad_req;
2873 }
2874
2875 if (req->buf->p[msg->sl.rq.v + 4] != '/' ||
2876 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 5]) ||
2877 req->buf->p[msg->sl.rq.v + 6] != '.' ||
2878 !isdigit((unsigned char)req->buf->p[msg->sl.rq.v + 7])) {
2879 msg->err_pos = msg->sl.rq.v + 4;
2880 goto return_bad_req;
2881 }
2882 }
2883
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2884 /* ... and check if the request is HTTP/1.1 or above */
2885 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2886 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2887 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2888 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2889 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2890
2891 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2892 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]2893
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2894 /* if the frontend has "option http-use-proxy-header", we'll check if
2895 * we have what looks like a proxied connection instead of a connection,
2896 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2897 * Note that this is *not* RFC-compliant, however browsers and proxies
2898 * happen to do that despite being non-standard :-(
2899 * We consider that a request not beginning with either '/' or '*' is
2900 * a proxied connection, which covers both "scheme://location" and
2901 * CONNECT ip:port.
2902 */
2903 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2904 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2905 txn->flags |= TX_USE_PX_CONN;
2906
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2907 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2908 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2909
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2910 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2911 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2912 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2913 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2914
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]2915 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
2916 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2917 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]2918 * The length of a message body is determined by one of the following
2919 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2920 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]2921 * 1. Any response to a HEAD request and any response with a 1xx
2922 * (Informational), 204 (No Content), or 304 (Not Modified) status
2923 * code is always terminated by the first empty line after the
2924 * header fields, regardless of the header fields present in the
2925 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2926 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]2927 * 2. Any 2xx (Successful) response to a CONNECT request implies that
2928 * the connection will become a tunnel immediately after the empty
2929 * line that concludes the header fields. A client MUST ignore any
2930 * Content-Length or Transfer-Encoding header fields received in
2931 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2932 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]2933 * 3. If a Transfer-Encoding header field is present and the chunked
2934 * transfer coding (Section 4.1) is the final encoding, the message
2935 * body length is determined by reading and decoding the chunked
2936 * data until the transfer coding indicates the data is complete.
2937 *
2938 * If a Transfer-Encoding header field is present in a response and
2939 * the chunked transfer coding is not the final encoding, the
2940 * message body length is determined by reading the connection until
2941 * it is closed by the server. If a Transfer-Encoding header field
2942 * is present in a request and the chunked transfer coding is not
2943 * the final encoding, the message body length cannot be determined
2944 * reliably; the server MUST respond with the 400 (Bad Request)
2945 * status code and then close the connection.
2946 *
2947 * If a message is received with both a Transfer-Encoding and a
2948 * Content-Length header field, the Transfer-Encoding overrides the
2949 * Content-Length. Such a message might indicate an attempt to
2950 * perform request smuggling (Section 9.5) or response splitting
2951 * (Section 9.4) and ought to be handled as an error. A sender MUST
2952 * remove the received Content-Length field prior to forwarding such
2953 * a message downstream.
2954 *
2955 * 4. If a message is received without Transfer-Encoding and with
2956 * either multiple Content-Length header fields having differing
2957 * field-values or a single Content-Length header field having an
2958 * invalid value, then the message framing is invalid and the
2959 * recipient MUST treat it as an unrecoverable error. If this is a
2960 * request message, the server MUST respond with a 400 (Bad Request)
2961 * status code and then close the connection. If this is a response
2962 * message received by a proxy, the proxy MUST close the connection
2963 * to the server, discard the received response, and send a 502 (Bad
2964 * Gateway) response to the client. If this is a response message
2965 * received by a user agent, the user agent MUST close the
2966 * connection to the server and discard the received response.
2967 *
2968 * 5. If a valid Content-Length header field is present without
2969 * Transfer-Encoding, its decimal value defines the expected message
2970 * body length in octets. If the sender closes the connection or
2971 * the recipient times out before the indicated number of octets are
2972 * received, the recipient MUST consider the message to be
2973 * incomplete and close the connection.
2974 *
2975 * 6. If this is a request message and none of the above are true, then
2976 * the message body length is zero (no message body is present).
2977 *
2978 * 7. Otherwise, this is a response message without a declared message
2979 * body length, so the message body length is determined by the
2980 * number of octets received prior to the server closing the
2981 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2982 */
2983
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2984 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2985 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaue77bc172015-05-01 10:06:30 +0200[diff] [blame]2986 while (http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2987 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2988 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2989 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau49efa262015-05-01 10:09:49 +0200[diff] [blame]2990 /* chunked not last, return badreq */
2991 goto return_bad_req;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2992 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2993 }
2994
Willy Tarreaudfa3d922015-04-30 10:57:51 +0200[diff] [blame]2995 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2996 ctx.idx = 0;
Willy Tarreaudfa3d922015-04-30 10:57:51 +0200[diff] [blame]2997 if (msg->flags & HTTP_MSGF_TE_CHNK) {
2998 while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx))
2999 http_remove_header2(msg, &txn->hdr_idx, &ctx);
3000 }
Willy Tarreau49efa262015-05-01 10:09:49 +0200[diff] [blame]3001 else while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3002 signed long long cl;
3003
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3004 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3005 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3006 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3007 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3008
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3009 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3010 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3011 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3012 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3013
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3014 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3015 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3016 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3017 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3018
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3019 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3020 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3021 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]3022 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3023
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3024 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]3025 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]3026 }
3027
Willy Tarreau49efa262015-05-01 10:09:49 +0200[diff] [blame]3028 /* even bodyless requests have a known length */
3029 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3030
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3031 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
3032 * only change if both the request and the config reference something else.
3033 * Option httpclose by itself sets tunnel mode where headers are mangled.
3034 * However, if another mode is set, it will affect it (eg: server-close/
3035 * keep-alive + httpclose = close). Note that we avoid to redo the same work
3036 * if FE and BE have the same settings (common). The method consists in
3037 * checking if options changed between the two calls (implying that either
3038 * one is non-null, or one of them is non-null and we are there for the first
3039 * time.
3040 */
3041 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreau2e47a3a2014-09-30 18:44:22 +0200[diff] [blame]3042 ((s->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
3043 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3044
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3045 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3046 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3047 req->analyse_exp = TICK_ETERNITY;
3048 return 1;
3049
3050 return_bad_req:
3051 /* We centralize bad requests processing here */
3052 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3053 /* we detected a parsing error. We want to archive this request
3054 * in the dedicated proxy area for later troubleshooting.
3055 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3056 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]3057 }
3058
3059 txn->req.msg_state = HTTP_MSG_ERROR;
3060 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3061 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3062
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3063 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3064 if (s->listener->counters)
3065 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3066
3067 return_prx_cond:
3068 if (!(s->flags & SN_ERR_MASK))
3069 s->flags |= SN_ERR_PRXCOND;
3070 if (!(s->flags & SN_FINST_MASK))
3071 s->flags |= SN_FINST_R;
3072
3073 req->analysers = 0;
3074 req->analyse_exp = TICK_ETERNITY;
3075 return 0;
3076}
3077
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3078
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3079/* This function prepares an applet to handle the stats. It can deal with the
3080 * "100-continue" expectation, check that admin rules are met for POST requests,
3081 * and program a response message if something was unexpected. It cannot fail
3082 * 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]3083 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3084 * s->target which is supposed to already point to the stats applet. The caller
3085 * is expected to have already assigned an appctx to the session.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3086 */
3087int http_handle_stats(struct session *s, struct channel *req)
3088{
3089 struct stats_admin_rule *stats_admin_rule;
3090 struct stream_interface *si = s->rep->prod;
3091 struct http_txn *txn = &s->txn;
3092 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3093 struct uri_auth *uri_auth = s->be->uri_auth;
3094 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3095 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3096
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3097 appctx = si_appctx(si);
3098 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3099 appctx->st1 = appctx->st2 = 0;
3100 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3101 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3102 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn.meth != HTTP_METH_HEAD))
3103 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3104
3105 uri = msg->chn->buf->p + msg->sl.rq.u;
3106 lookup = uri + uri_auth->uri_len;
3107
3108 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3109 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3110 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3111 break;
3112 }
3113 }
3114
3115 if (uri_auth->refresh) {
3116 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3117 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3118 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3119 break;
3120 }
3121 }
3122 }
3123
3124 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3125 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3126 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3127 break;
3128 }
3129 }
3130
3131 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3132 if (memcmp(h, ";st=", 4) == 0) {
3133 int i;
3134 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3135 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3136 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3137 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3138 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3139 break;
3140 }
3141 }
3142 break;
3143 }
3144 }
3145
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3146 appctx->ctx.stats.scope_str = 0;
3147 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3148 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3149 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3150 int itx = 0;
3151 const char *h2;
3152 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3153 const char *err;
3154
3155 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3156 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3157 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3158 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3159 itx++;
3160 h++;
3161 }
3162
3163 if (itx > STAT_SCOPE_TXT_MAXLEN)
3164 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3165 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3166
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3167 /* 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]3168 memcpy(scope_txt, h2, itx);
3169 scope_txt[itx] = '\0';
3170 err = invalid_char(scope_txt);
3171 if (err) {
3172 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3173 appctx->ctx.stats.scope_str = 0;
3174 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3175 }
3176 break;
3177 }
3178 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3179
3180 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3181 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3182 int ret = 1;
3183
3184 if (stats_admin_rule->cond) {
3185 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
3186 ret = acl_pass(ret);
3187 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3188 ret = !ret;
3189 }
3190
3191 if (ret) {
3192 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3193 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3194 break;
3195 }
3196 }
3197
3198 /* Was the status page requested with a POST ? */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3199 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3200 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3201 /* we'll need the request body, possibly after sending 100-continue */
3202 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3203 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3204 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3205 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3206 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3207 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3208 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3209 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3210 else {
3211 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3212 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3213 }
3214
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3215 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3216 return 1;
3217}
3218
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3219/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3220 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3221 */
3222static inline void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
3223{
3224#ifdef IP_TOS
3225 if (from.ss_family == AF_INET)
3226 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3227#endif
3228#ifdef IPV6_TCLASS
3229 if (from.ss_family == AF_INET6) {
3230 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
3231 /* v4-mapped addresses need IP_TOS */
3232 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3233 else
3234 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3235 }
3236#endif
3237}
3238
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3239static 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]3240 char* buf, struct hdr_idx* idx, struct list *fmt, struct my_regex *re,
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3241 struct hdr_ctx* ctx, int action)
3242{
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3243 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3244 struct hdr_idx *idx, struct hdr_ctx *ctx);
3245 struct chunk *replace = get_trash_chunk();
3246 struct chunk *output = get_trash_chunk();
3247
3248 replace->len = build_logline(s, replace->str, replace->size, fmt);
3249 if (replace->len >= replace->size - 1)
3250 return -1;
3251
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3252 ctx->idx = 0;
3253
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3254 /* Choose the header browsing function. */
3255 switch (action) {
3256 case HTTP_REQ_ACT_REPLACE_VAL:
3257 case HTTP_RES_ACT_REPLACE_VAL:
3258 http_find_hdr_func = http_find_header2;
3259 break;
3260 case HTTP_REQ_ACT_REPLACE_HDR:
3261 case HTTP_RES_ACT_REPLACE_HDR:
3262 http_find_hdr_func = http_find_full_header2;
3263 break;
3264 default: /* impossible */
3265 return -1;
3266 }
3267
3268 while (http_find_hdr_func(name, name_len, buf, idx, ctx)) {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3269 struct hdr_idx_elem *hdr = idx->v + ctx->idx;
3270 int delta;
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3271 char *val = ctx->line + ctx->val;
3272 char* val_end = val + ctx->vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3273
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3274 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch))
3275 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3276
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3277 output->len = exp_replace(output->str, output->size, val, replace->str, pmatch);
3278 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3279 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3280
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3281 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3282
3283 hdr->len += delta;
3284 http_msg_move_end(msg, delta);
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3285
3286 /* Adjust the length of the current value of the index. */
3287 ctx->vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3288 }
3289
3290 return 0;
3291}
3292
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3293/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3294 * transaction <txn>. Returns the verdict of the first rule that prevents
3295 * further processing of the request (auth, deny, ...), and defaults to
3296 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3297 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
3298 * on txn->flags if it encounters a tarpit rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3299 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3300enum rule_result
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3301http_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]3302{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3303 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3304 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3305 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3306 const char *auth_realm;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3307
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3308 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3309 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3310 continue;
3311
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3312 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3313 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3314 int ret;
3315
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3316 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]3317 ret = acl_pass(ret);
3318
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3319 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3320 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3321
3322 if (!ret) /* condition not matched */
3323 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3324 }
3325
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3326
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3327 switch (rule->action) {
3328 case HTTP_REQ_ACT_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3329 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3330
3331 case HTTP_REQ_ACT_DENY:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3332 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3333
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3334 case HTTP_REQ_ACT_TARPIT:
3335 txn->flags |= TX_CLTARPIT;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3336 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3337
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3338 case HTTP_REQ_ACT_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3339 /* Auth might be performed on regular http-req rules as well as on stats */
3340 auth_realm = rule->arg.auth.realm;
3341 if (!auth_realm) {
3342 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3343 auth_realm = STATS_DEFAULT_REALM;
3344 else
3345 auth_realm = px->id;
3346 }
3347 /* send 401/407 depending on whether we use a proxy or not. We still
3348 * count one error, because normal browsing won't significantly
3349 * increase the counter but brute force attempts will.
3350 */
3351 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3352 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
3353 stream_int_retnclose(&s->si[0], &trash);
3354 session_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3355 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3356
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3357 case HTTP_REQ_ACT_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3358 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3359 return HTTP_RULE_RES_BADREQ;
3360 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3361
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3362 case HTTP_REQ_ACT_SET_NICE:
3363 s->task->nice = rule->arg.nice;
3364 break;
3365
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3366 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3367 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3368 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]3369 break;
3370
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3371 case HTTP_REQ_ACT_SET_MARK:
3372#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3373 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3374 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]3375#endif
3376 break;
3377
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3378 case HTTP_REQ_ACT_SET_LOGL:
3379 s->logs.level = rule->arg.loglevel;
3380 break;
3381
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3382 case HTTP_REQ_ACT_REPLACE_HDR:
3383 case HTTP_REQ_ACT_REPLACE_VAL:
3384 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3385 txn->req.chn->buf->p, &txn->hdr_idx, &rule->arg.hdr_add.fmt,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3386 &rule->arg.hdr_add.re, &ctx, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3387 return HTTP_RULE_RES_BADREQ;
3388 break;
3389
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3390 case HTTP_REQ_ACT_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3391 ctx.idx = 0;
3392 /* remove all occurrences of the header */
3393 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3394 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3395 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3396 }
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3397 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3398
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3399 case HTTP_REQ_ACT_SET_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]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);
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3407
3408 if (rule->action == HTTP_REQ_ACT_SET_HDR) {
3409 /* remove all occurrences of the header */
3410 ctx.idx = 0;
3411 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3412 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3413 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3414 }
3415 }
3416
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3417 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3418 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3419
3420 case HTTP_REQ_ACT_DEL_ACL:
3421 case HTTP_REQ_ACT_DEL_MAP: {
3422 struct pat_ref *ref;
3423 char *key;
3424 int len;
3425
3426 /* collect reference */
3427 ref = pat_ref_lookup(rule->arg.map.ref);
3428 if (!ref)
3429 continue;
3430
3431 /* collect key */
3432 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3433 key = trash.str;
3434 key[len] = '\0';
3435
3436 /* perform update */
3437 /* returned code: 1=ok, 0=ko */
3438 pat_ref_delete(ref, key);
3439
3440 break;
3441 }
3442
3443 case HTTP_REQ_ACT_ADD_ACL: {
3444 struct pat_ref *ref;
3445 char *key;
3446 struct chunk *trash_key;
3447 int len;
3448
3449 trash_key = get_trash_chunk();
3450
3451 /* collect reference */
3452 ref = pat_ref_lookup(rule->arg.map.ref);
3453 if (!ref)
3454 continue;
3455
3456 /* collect key */
3457 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3458 key = trash_key->str;
3459 key[len] = '\0';
3460
3461 /* perform update */
3462 /* add entry only if it does not already exist */
3463 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3464 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3465
3466 break;
3467 }
3468
3469 case HTTP_REQ_ACT_SET_MAP: {
3470 struct pat_ref *ref;
3471 char *key, *value;
3472 struct chunk *trash_key, *trash_value;
3473 int len;
3474
3475 trash_key = get_trash_chunk();
3476 trash_value = get_trash_chunk();
3477
3478 /* collect reference */
3479 ref = pat_ref_lookup(rule->arg.map.ref);
3480 if (!ref)
3481 continue;
3482
3483 /* collect key */
3484 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3485 key = trash_key->str;
3486 key[len] = '\0';
3487
3488 /* collect value */
3489 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3490 value = trash_value->str;
3491 value[len] = '\0';
3492
3493 /* perform update */
3494 if (pat_ref_find_elt(ref, key) != NULL)
3495 /* update entry if it exists */
3496 pat_ref_set(ref, key, value, NULL);
3497 else
3498 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3499 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3500
3501 break;
3502 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3503
3504 case HTTP_REQ_ACT_CUSTOM_CONT:
3505 rule->action_ptr(rule, px, s, txn);
3506 break;
3507
3508 case HTTP_REQ_ACT_CUSTOM_STOP:
3509 rule->action_ptr(rule, px, s, txn);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3510 return HTTP_RULE_RES_DONE;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3511 }
3512 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3513
3514 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3515 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3516}
3517
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3518
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3519/* Executes the http-response rules <rules> for session <s>, proxy <px> and
3520 * transaction <txn>. Returns the first rule that prevents further processing
3521 * of the response (deny, ...) or NULL if it executed all rules or stopped
3522 * on an allow. It may set the TX_SVDENY on txn->flags if it encounters a deny
3523 * rule.
3524 */
3525static struct http_res_rule *
3526http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3527{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3528 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3529 struct http_res_rule *rule;
3530 struct hdr_ctx ctx;
3531
3532 list_for_each_entry(rule, rules, list) {
3533 if (rule->action >= HTTP_RES_ACT_MAX)
3534 continue;
3535
3536 /* check optional condition */
3537 if (rule->cond) {
3538 int ret;
3539
3540 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
3541 ret = acl_pass(ret);
3542
3543 if (rule->cond->pol == ACL_COND_UNLESS)
3544 ret = !ret;
3545
3546 if (!ret) /* condition not matched */
3547 continue;
3548 }
3549
3550
3551 switch (rule->action) {
3552 case HTTP_RES_ACT_ALLOW:
3553 return NULL; /* "allow" rules are OK */
3554
3555 case HTTP_RES_ACT_DENY:
3556 txn->flags |= TX_SVDENY;
3557 return rule;
3558
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3559 case HTTP_RES_ACT_SET_NICE:
3560 s->task->nice = rule->arg.nice;
3561 break;
3562
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3563 case HTTP_RES_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3564 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3565 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]3566 break;
3567
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3568 case HTTP_RES_ACT_SET_MARK:
3569#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3570 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3571 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]3572#endif
3573 break;
3574
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3575 case HTTP_RES_ACT_SET_LOGL:
3576 s->logs.level = rule->arg.loglevel;
3577 break;
3578
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3579 case HTTP_RES_ACT_REPLACE_HDR:
3580 case HTTP_RES_ACT_REPLACE_VAL:
3581 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3582 txn->rsp.chn->buf->p, &txn->hdr_idx, &rule->arg.hdr_add.fmt,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3583 &rule->arg.hdr_add.re, &ctx, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3584 return NULL; /* note: we should report an error here */
3585 break;
3586
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3587 case HTTP_RES_ACT_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3588 ctx.idx = 0;
3589 /* remove all occurrences of the header */
3590 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3591 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3592 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3593 }
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3594 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3595
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3596 case HTTP_RES_ACT_SET_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3597 case HTTP_RES_ACT_ADD_HDR:
3598 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3599 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3600 trash.len = rule->arg.hdr_add.name_len;
3601 trash.str[trash.len++] = ':';
3602 trash.str[trash.len++] = ' ';
3603 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3604
3605 if (rule->action == HTTP_RES_ACT_SET_HDR) {
3606 /* remove all occurrences of the header */
3607 ctx.idx = 0;
3608 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3609 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3610 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3611 }
3612 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3613 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3614 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3615
3616 case HTTP_RES_ACT_DEL_ACL:
3617 case HTTP_RES_ACT_DEL_MAP: {
3618 struct pat_ref *ref;
3619 char *key;
3620 int len;
3621
3622 /* collect reference */
3623 ref = pat_ref_lookup(rule->arg.map.ref);
3624 if (!ref)
3625 continue;
3626
3627 /* collect key */
3628 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3629 key = trash.str;
3630 key[len] = '\0';
3631
3632 /* perform update */
3633 /* returned code: 1=ok, 0=ko */
3634 pat_ref_delete(ref, key);
3635
3636 break;
3637 }
3638
3639 case HTTP_RES_ACT_ADD_ACL: {
3640 struct pat_ref *ref;
3641 char *key;
3642 struct chunk *trash_key;
3643 int len;
3644
3645 trash_key = get_trash_chunk();
3646
3647 /* collect reference */
3648 ref = pat_ref_lookup(rule->arg.map.ref);
3649 if (!ref)
3650 continue;
3651
3652 /* collect key */
3653 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3654 key = trash_key->str;
3655 key[len] = '\0';
3656
3657 /* perform update */
3658 /* check if the entry already exists */
3659 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3660 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3661
3662 break;
3663 }
3664
3665 case HTTP_RES_ACT_SET_MAP: {
3666 struct pat_ref *ref;
3667 char *key, *value;
3668 struct chunk *trash_key, *trash_value;
3669 int len;
3670
3671 trash_key = get_trash_chunk();
3672 trash_value = get_trash_chunk();
3673
3674 /* collect reference */
3675 ref = pat_ref_lookup(rule->arg.map.ref);
3676 if (!ref)
3677 continue;
3678
3679 /* collect key */
3680 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3681 key = trash_key->str;
3682 key[len] = '\0';
3683
3684 /* collect value */
3685 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3686 value = trash_value->str;
3687 value[len] = '\0';
3688
3689 /* perform update */
3690 if (pat_ref_find_elt(ref, key) != NULL)
3691 /* update entry if it exists */
3692 pat_ref_set(ref, key, value, NULL);
3693 else
3694 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3695 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3696
3697 break;
3698 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3699
3700 case HTTP_RES_ACT_CUSTOM_CONT:
3701 rule->action_ptr(rule, px, s, txn);
3702 break;
3703
3704 case HTTP_RES_ACT_CUSTOM_STOP:
3705 rule->action_ptr(rule, px, s, txn);
3706 return rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3707 }
3708 }
3709
3710 /* we reached the end of the rules, nothing to report */
3711 return NULL;
3712}
3713
3714
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3715/* Perform an HTTP redirect based on the information in <rule>. The function
3716 * returns non-zero on success, or zero in case of a, irrecoverable error such
3717 * as too large a request to build a valid response.
3718 */
3719static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3720{
3721 struct http_msg *msg = &txn->req;
3722 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3723 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3724
3725 /* build redirect message */
3726 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3727 case 308:
3728 msg_fmt = HTTP_308;
3729 break;
3730 case 307:
3731 msg_fmt = HTTP_307;
3732 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3733 case 303:
3734 msg_fmt = HTTP_303;
3735 break;
3736 case 301:
3737 msg_fmt = HTTP_301;
3738 break;
3739 case 302:
3740 default:
3741 msg_fmt = HTTP_302;
3742 break;
3743 }
3744
3745 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3746 return 0;
3747
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3748 location = trash.str + trash.len;
3749
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3750 switch(rule->type) {
3751 case REDIRECT_TYPE_SCHEME: {
3752 const char *path;
3753 const char *host;
3754 struct hdr_ctx ctx;
3755 int pathlen;
3756 int hostlen;
3757
3758 host = "";
3759 hostlen = 0;
3760 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]3761 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]3762 host = ctx.line + ctx.val;
3763 hostlen = ctx.vlen;
3764 }
3765
3766 path = http_get_path(txn);
3767 /* build message using path */
3768 if (path) {
3769 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3770 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3771 int qs = 0;
3772 while (qs < pathlen) {
3773 if (path[qs] == '?') {
3774 pathlen = qs;
3775 break;
3776 }
3777 qs++;
3778 }
3779 }
3780 } else {
3781 path = "/";
3782 pathlen = 1;
3783 }
3784
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3785 if (rule->rdr_str) { /* this is an old "redirect" rule */
3786 /* check if we can add scheme + "://" + host + path */
3787 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3788 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3789
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3790 /* add scheme */
3791 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3792 trash.len += rule->rdr_len;
3793 }
3794 else {
3795 /* add scheme with executing log format */
3796 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]3797
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3798 /* check if we can add scheme + "://" + host + path */
3799 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3800 return 0;
3801 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3802 /* add "://" */
3803 memcpy(trash.str + trash.len, "://", 3);
3804 trash.len += 3;
3805
3806 /* add host */
3807 memcpy(trash.str + trash.len, host, hostlen);
3808 trash.len += hostlen;
3809
3810 /* add path */
3811 memcpy(trash.str + trash.len, path, pathlen);
3812 trash.len += pathlen;
3813
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3814 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3815 if (trash.len && trash.str[trash.len - 1] != '/' &&
3816 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3817 if (trash.len > trash.size - 5)
3818 return 0;
3819 trash.str[trash.len] = '/';
3820 trash.len++;
3821 }
3822
3823 break;
3824 }
3825 case REDIRECT_TYPE_PREFIX: {
3826 const char *path;
3827 int pathlen;
3828
3829 path = http_get_path(txn);
3830 /* build message using path */
3831 if (path) {
3832 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3833 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3834 int qs = 0;
3835 while (qs < pathlen) {
3836 if (path[qs] == '?') {
3837 pathlen = qs;
3838 break;
3839 }
3840 qs++;
3841 }
3842 }
3843 } else {
3844 path = "/";
3845 pathlen = 1;
3846 }
3847
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3848 if (rule->rdr_str) { /* this is an old "redirect" rule */
3849 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3850 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3851
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3852 /* add prefix. Note that if prefix == "/", we don't want to
3853 * add anything, otherwise it makes it hard for the user to
3854 * configure a self-redirection.
3855 */
3856 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3857 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3858 trash.len += rule->rdr_len;
3859 }
3860 }
3861 else {
3862 /* add prefix with executing log format */
3863 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3864
3865 /* Check length */
3866 if (trash.len + pathlen > trash.size - 4)
3867 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3868 }
3869
3870 /* add path */
3871 memcpy(trash.str + trash.len, path, pathlen);
3872 trash.len += pathlen;
3873
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3874 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3875 if (trash.len && trash.str[trash.len - 1] != '/' &&
3876 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3877 if (trash.len > trash.size - 5)
3878 return 0;
3879 trash.str[trash.len] = '/';
3880 trash.len++;
3881 }
3882
3883 break;
3884 }
3885 case REDIRECT_TYPE_LOCATION:
3886 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3887 if (rule->rdr_str) { /* this is an old "redirect" rule */
3888 if (trash.len + rule->rdr_len > trash.size - 4)
3889 return 0;
3890
3891 /* add location */
3892 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3893 trash.len += rule->rdr_len;
3894 }
3895 else {
3896 /* add location with executing log format */
3897 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]3898
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3899 /* Check left length */
3900 if (trash.len > trash.size - 4)
3901 return 0;
3902 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3903 break;
3904 }
3905
3906 if (rule->cookie_len) {
3907 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3908 trash.len += 14;
3909 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3910 trash.len += rule->cookie_len;
3911 memcpy(trash.str + trash.len, "\r\n", 2);
3912 trash.len += 2;
3913 }
3914
3915 /* add end of headers and the keep-alive/close status.
3916 * We may choose to set keep-alive if the Location begins
3917 * with a slash, because the client will come back to the
3918 * same server.
3919 */
3920 txn->status = rule->code;
3921 /* let's log the request time */
3922 s->logs.tv_request = now;
3923
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3924 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3925 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3926 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3927 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3928 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3929 /* keep-alive possible */
3930 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3931 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3932 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3933 trash.len += 30;
3934 } else {
3935 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3936 trash.len += 24;
3937 }
3938 }
3939 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3940 trash.len += 4;
3941 bo_inject(txn->rsp.chn, trash.str, trash.len);
3942 /* "eat" the request */
3943 bi_fast_delete(txn->req.chn->buf, msg->sov);
Willy Tarreau6d8bac72014-04-25 12:19:32 +0200[diff] [blame]3944 msg->next -= msg->sov;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3945 msg->sov = 0;
3946 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3947 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3948 txn->req.msg_state = HTTP_MSG_CLOSED;
3949 txn->rsp.msg_state = HTTP_MSG_DONE;
3950 } else {
3951 /* keep-alive not possible */
3952 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3953 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3954 trash.len += 29;
3955 } else {
3956 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3957 trash.len += 23;
3958 }
3959 stream_int_retnclose(txn->req.chn->prod, &trash);
3960 txn->req.chn->analysers = 0;
3961 }
3962
3963 if (!(s->flags & SN_ERR_MASK))
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3964 s->flags |= SN_ERR_LOCAL;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3965 if (!(s->flags & SN_FINST_MASK))
3966 s->flags |= SN_FINST_R;
3967
3968 return 1;
3969}
3970
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3971/* This stream analyser runs all HTTP request processing which is common to
3972 * frontends and backends, which means blocking ACLs, filters, connection-close,
3973 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3974 * 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]3975 * either needs more data or wants to immediately abort the request (eg: deny,
3976 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3977 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3978int 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]3979{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3980 struct http_txn *txn = &s->txn;
3981 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3982 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3983 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3984 enum rule_result verdict;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3985
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3986 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3987 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3988 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3989 return 0;
3990 }
3991
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3992 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]3993 now_ms, __FUNCTION__,
3994 s,
3995 req,
3996 req->rex, req->wex,
3997 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3998 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3999 req->analysers);
4000
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4001 /* just in case we have some per-backend tracking */
4002 session_inc_be_http_req_ctr(s);
4003
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4004 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4005 if (!LIST_ISEMPTY(&px->http_req_rules)) {
4006 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, txn);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4007
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4008 switch (verdict) {
4009 case HTTP_RULE_RES_CONT:
4010 case HTTP_RULE_RES_STOP: /* nothing to do */
4011 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4012
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4013 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4014 if (txn->flags & TX_CLTARPIT)
4015 goto tarpit;
4016 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4017
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4018 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4019 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4020
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4021 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4022 goto done;
4023
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4024 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4025 goto return_bad_req;
4026 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4027 }
4028
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4029 /* OK at this stage, we know that the request was accepted according to
4030 * the http-request rules, we can check for the stats. Note that the
4031 * URI is detected *before* the req* rules in order not to be affected
4032 * by a possible reqrep, while they are processed *after* so that a
4033 * reqdeny can still block them. This clearly needs to change in 1.6!
4034 */
4035 if (stats_check_uri(s->rep->prod, txn, px)) {
4036 s->target = &http_stats_applet.obj_type;
4037 if (unlikely(!stream_int_register_handler(s->rep->prod, objt_applet(s->target)))) {
4038 txn->status = 500;
4039 s->logs.tv_request = now;
4040 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4041
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4042 if (!(s->flags & SN_ERR_MASK))
4043 s->flags |= SN_ERR_RESOURCE;
4044 goto return_prx_cond;
4045 }
4046
4047 /* parse the whole stats request and extract the relevant information */
4048 http_handle_stats(s, req);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4049 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, txn);
4050 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4051
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4052 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4053 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4054
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4055 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4056 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4057 }
4058
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4059 /* evaluate the req* rules except reqadd */
4060 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4061 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4062 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4063
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4064 if (txn->flags & TX_CLDENY)
4065 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4066
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4067 if (txn->flags & TX_CLTARPIT)
4068 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4069 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4070
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4071 /* add request headers from the rule sets in the same order */
4072 list_for_each_entry(wl, &px->req_add, list) {
4073 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]4074 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]4075 ret = acl_pass(ret);
4076 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4077 ret = !ret;
4078 if (!ret)
4079 continue;
4080 }
4081
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4082 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4083 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4084 }
4085
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4086
4087 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4088 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4089 /* process the stats request now */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4090 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
4091 s->fe->fe_counters.intercepted_req++;
4092
4093 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
4094 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
4095 if (!(s->flags & SN_FINST_MASK))
4096 s->flags |= SN_FINST_R;
4097
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4098 /* we may want to compress the stats page */
4099 if (s->fe->comp || s->be->comp)
4100 select_compression_request_header(s, req->buf);
4101
4102 /* enable the minimally required analyzers to handle keep-alive and compression on the HTTP response */
Willy Tarreaude8ca962014-11-20 22:23:10 +0100[diff] [blame]4103 req->analysers = (req->analysers & AN_REQ_HTTP_BODY) | AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4104 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4105 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4106
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4107 /* check whether we have some ACLs set to redirect this request */
4108 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4109 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4110 int ret;
4111
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]4112 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]4113 ret = acl_pass(ret);
4114 if (rule->cond->pol == ACL_COND_UNLESS)
4115 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4116 if (!ret)
4117 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4118 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4119 if (!http_apply_redirect_rule(rule, s, txn))
4120 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4121 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4122 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4123
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4124 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4125 * If this happens, then the data will not come immediately, so we must
4126 * send all what we have without waiting. Note that due to the small gain
4127 * 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]4128 * 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]4129 * itself once used.
4130 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4131 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4132
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4133 done: /* done with this analyser, continue with next ones that the calling
4134 * points will have set, if any.
4135 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4136 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIERfc566b52014-08-22 06:55:26 +0200[diff] [blame]4137 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4138 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4139 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4140
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4141 tarpit:
4142 /* When a connection is tarpitted, we use the tarpit timeout,
4143 * which may be the same as the connect timeout if unspecified.
4144 * If unset, then set it to zero because we really want it to
4145 * eventually expire. We build the tarpit as an analyser.
4146 */
4147 channel_erase(s->req);
4148
4149 /* wipe the request out so that we can drop the connection early
4150 * if the client closes first.
4151 */
4152 channel_dont_connect(req);
4153 req->analysers = 0; /* remove switching rules etc... */
4154 req->analysers |= AN_REQ_HTTP_TARPIT;
4155 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4156 if (!req->analyse_exp)
4157 req->analyse_exp = tick_add(now_ms, 0);
4158 session_inc_http_err_ctr(s);
4159 s->fe->fe_counters.denied_req++;
4160 if (s->fe != s->be)
4161 s->be->be_counters.denied_req++;
4162 if (s->listener->counters)
4163 s->listener->counters->denied_req++;
Thierry FOURNIERfc566b52014-08-22 06:55:26 +0200[diff] [blame]4164 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4165
4166 deny: /* this request was blocked (denied) */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4167 txn->flags |= TX_CLDENY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4168 txn->status = 403;
4169 s->logs.tv_request = now;
4170 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
4171 session_inc_http_err_ctr(s);
4172 s->fe->fe_counters.denied_req++;
4173 if (s->fe != s->be)
4174 s->be->be_counters.denied_req++;
4175 if (s->listener->counters)
4176 s->listener->counters->denied_req++;
4177 goto return_prx_cond;
4178
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4179 return_bad_req:
4180 /* We centralize bad requests processing here */
4181 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4182 /* we detected a parsing error. We want to archive this request
4183 * in the dedicated proxy area for later troubleshooting.
4184 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4185 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]4186 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4187
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4188 txn->req.msg_state = HTTP_MSG_ERROR;
4189 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4190 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4191
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4192 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4193 if (s->listener->counters)
4194 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4195
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4196 return_prx_cond:
4197 if (!(s->flags & SN_ERR_MASK))
4198 s->flags |= SN_ERR_PRXCOND;
4199 if (!(s->flags & SN_FINST_MASK))
4200 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4201
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4202 req->analysers = 0;
4203 req->analyse_exp = TICK_ETERNITY;
4204 return 0;
4205}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4206
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4207/* This function performs all the processing enabled for the current request.
4208 * It returns 1 if the processing can continue on next analysers, or zero if it
4209 * needs more data, encounters an error, or wants to immediately abort the
4210 * request. It relies on buffers flags, and updates s->req->analysers.
4211 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4212int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4213{
4214 struct http_txn *txn = &s->txn;
4215 struct http_msg *msg = &txn->req;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4216 struct connection *cli_conn = objt_conn(req->prod->end);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4217
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4218 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4219 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4220 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4221 return 0;
4222 }
4223
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4224 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]4225 now_ms, __FUNCTION__,
4226 s,
4227 req,
4228 req->rex, req->wex,
4229 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4230 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4231 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4232
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]4233 if (s->fe->comp || s->be->comp)
4234 select_compression_request_header(s, req->buf);
4235
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4236 /*
4237 * Right now, we know that we have processed the entire headers
4238 * and that unwanted requests have been filtered out. We can do
4239 * whatever we want with the remaining request. Also, now we
4240 * may have separate values for ->fe, ->be.
4241 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4242
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4243 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4244 * If HTTP PROXY is set we simply get remote server address parsing
4245 * incoming request. Note that this requires that a connection is
4246 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4247 */
4248 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4249 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4250 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4251
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4252 /* Note that for now we don't reuse existing proxy connections */
4253 if (unlikely((conn = si_alloc_conn(req->cons, 0)) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4254 txn->req.msg_state = HTTP_MSG_ERROR;
4255 txn->status = 500;
4256 req->analysers = 0;
4257 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
4258
4259 if (!(s->flags & SN_ERR_MASK))
4260 s->flags |= SN_ERR_RESOURCE;
4261 if (!(s->flags & SN_FINST_MASK))
4262 s->flags |= SN_FINST_R;
4263
4264 return 0;
4265 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4266
4267 path = http_get_path(txn);
4268 url2sa(req->buf->p + msg->sl.rq.u,
4269 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4270 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4271 /* if the path was found, we have to remove everything between
4272 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4273 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4274 * u_l characters by a single "/".
4275 */
4276 if (path) {
4277 char *cur_ptr = req->buf->p;
4278 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4279 int delta;
4280
4281 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4282 http_msg_move_end(&txn->req, delta);
4283 cur_end += delta;
4284 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4285 goto return_bad_req;
4286 }
4287 else {
4288 char *cur_ptr = req->buf->p;
4289 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4290 int delta;
4291
4292 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4293 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4294 http_msg_move_end(&txn->req, delta);
4295 cur_end += delta;
4296 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4297 goto return_bad_req;
4298 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4299 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4300
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4301 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4302 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4303 * Note that doing so might move headers in the request, but
4304 * the fields will stay coherent and the URI will not move.
4305 * This should only be performed in the backend.
4306 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4307 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4308 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
4309 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4310
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4311 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4312 * 8: the appsession cookie was looked up very early in 1.2,
4313 * so let's do the same now.
4314 */
4315
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4316 /* It needs to look into the URI unless persistence must be ignored */
4317 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4318 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]4319 }
4320
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4321 /* add unique-id if "header-unique-id" is specified */
4322
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4323 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
4324 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4325 goto return_bad_req;
4326 s->unique_id[0] = '\0';
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4327 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4328 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4329
4330 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4331 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
4332 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4333 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4334 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]4335 goto return_bad_req;
4336 }
4337
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4338 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4339 * 9: add X-Forwarded-For if either the frontend or the backend
4340 * asks for it.
4341 */
4342 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4343 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4344 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]4345 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
4346 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]4347 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4348 /* The header is set to be added only if none is present
4349 * and we found it, so don't do anything.
4350 */
4351 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4352 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4353 /* Add an X-Forwarded-For header unless the source IP is
4354 * in the 'except' network range.
4355 */
4356 if ((!s->fe->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4357 (((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]4358 != s->fe->except_net.s_addr) &&
4359 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4360 (((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]4361 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4362 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4363 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4364 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4365
4366 /* Note: we rely on the backend to get the header name to be used for
4367 * x-forwarded-for, because the header is really meant for the backends.
4368 * However, if the backend did not specify any option, we have to rely
4369 * on the frontend's header name.
4370 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4371 if (s->be->fwdfor_hdr_len) {
4372 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4373 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4374 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4375 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4376 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4377 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4378 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]4379
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4380 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]4381 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4382 }
4383 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4384 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4385 /* FIXME: for the sake of completeness, we should also support
4386 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4387 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4388 int len;
4389 char pn[INET6_ADDRSTRLEN];
4390 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4391 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4392 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4393
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4394 /* Note: we rely on the backend to get the header name to be used for
4395 * x-forwarded-for, because the header is really meant for the backends.
4396 * However, if the backend did not specify any option, we have to rely
4397 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4398 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4399 if (s->be->fwdfor_hdr_len) {
4400 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4401 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4402 } else {
4403 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4404 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4405 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4406 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4407
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4408 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]4409 goto return_bad_req;
4410 }
4411 }
4412
4413 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4414 * 10: add X-Original-To if either the frontend or the backend
4415 * asks for it.
4416 */
4417 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
4418
4419 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4420 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4421 /* Add an X-Original-To header unless the destination IP is
4422 * in the 'except' network range.
4423 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4424 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4425
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4426 if (cli_conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4427 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4428 (((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]4429 != s->fe->except_to.s_addr) &&
4430 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4431 (((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]4432 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4433 int len;
4434 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4435 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4436
4437 /* Note: we rely on the backend to get the header name to be used for
4438 * x-original-to, because the header is really meant for the backends.
4439 * However, if the backend did not specify any option, we have to rely
4440 * on the frontend's header name.
4441 */
4442 if (s->be->orgto_hdr_len) {
4443 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4444 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4445 } else {
4446 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4447 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4448 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4449 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]4450
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4451 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]4452 goto return_bad_req;
4453 }
4454 }
4455 }
4456
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4457 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4458 * If an "Upgrade" token is found, the header is left untouched in order not to have
4459 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4460 * "Upgrade" is present in the Connection header.
4461 */
4462 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4463 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4464 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4465 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4466 unsigned int want_flags = 0;
4467
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4468 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4469 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4470 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4471 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4472 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4473 want_flags |= TX_CON_CLO_SET;
4474 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4475 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4476 ((s->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
4477 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4478 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4479 want_flags |= TX_CON_KAL_SET;
4480 }
4481
4482 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4483 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4484 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4485
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4486
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4487 /* If we have no server assigned yet and we're balancing on url_param
4488 * with a POST request, we may be interested in checking the body for
4489 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4490 */
4491 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
4492 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4493 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4494 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4495 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4496 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4497
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4498 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4499 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4500#ifdef TCP_QUICKACK
4501 /* We expect some data from the client. Unless we know for sure
4502 * we already have a full request, we have to re-enable quick-ack
4503 * in case we previously disabled it, otherwise we might cause
4504 * the client to delay further data.
4505 */
4506 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4507 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4508 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4509 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4510 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4511#endif
4512 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4513
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4514 /*************************************************************
4515 * OK, that's finished for the headers. We have done what we *
4516 * could. Let's switch to the DATA state. *
4517 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4518 req->analyse_exp = TICK_ETERNITY;
4519 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4520
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4521 /* if the server closes the connection, we want to immediately react
4522 * and close the socket to save packets and syscalls.
4523 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4524 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
4525 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4526
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4527 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4528 /* OK let's go on with the BODY now */
4529 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4530
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4531 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4532 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4533 /* we detected a parsing error. We want to archive this request
4534 * in the dedicated proxy area for later troubleshooting.
4535 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4536 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]4537 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4538
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4539 txn->req.msg_state = HTTP_MSG_ERROR;
4540 txn->status = 400;
4541 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4542 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4543
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4544 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4545 if (s->listener->counters)
4546 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4547
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4548 if (!(s->flags & SN_ERR_MASK))
4549 s->flags |= SN_ERR_PRXCOND;
4550 if (!(s->flags & SN_FINST_MASK))
4551 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4552 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4553}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4554
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4555/* This function is an analyser which processes the HTTP tarpit. It always
4556 * returns zero, at the beginning because it prevents any other processing
4557 * from occurring, and at the end because it terminates the request.
4558 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4559int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4560{
4561 struct http_txn *txn = &s->txn;
4562
4563 /* This connection is being tarpitted. The CLIENT side has
4564 * already set the connect expiration date to the right
4565 * timeout. We just have to check that the client is still
4566 * there and that the timeout has not expired.
4567 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4568 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4569 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4570 !tick_is_expired(req->analyse_exp, now_ms))
4571 return 0;
4572
4573 /* We will set the queue timer to the time spent, just for
4574 * logging purposes. We fake a 500 server error, so that the
4575 * attacker will not suspect his connection has been tarpitted.
4576 * It will not cause trouble to the logs because we can exclude
4577 * the tarpitted connections by filtering on the 'PT' status flags.
4578 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4579 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4580
4581 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4582 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4583 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4584
4585 req->analysers = 0;
4586 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4587
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4588 if (!(s->flags & SN_ERR_MASK))
4589 s->flags |= SN_ERR_PRXCOND;
4590 if (!(s->flags & SN_FINST_MASK))
4591 s->flags |= SN_FINST_T;
4592 return 0;
4593}
4594
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4595/* This function is an analyser which waits for the HTTP request body. It waits
4596 * for either the buffer to be full, or the full advertised contents to have
4597 * reached the buffer. It must only be called after the standard HTTP request
4598 * processing has occurred, because it expects the request to be parsed and will
4599 * look for the Expect header. It may send a 100-Continue interim response. It
4600 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4601 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4602 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4603 */
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4604int http_wait_for_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4605{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4606 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4607 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4608
4609 /* We have to parse the HTTP request body to find any required data.
4610 * "balance url_param check_post" should have been the only way to get
4611 * into this. We were brought here after HTTP header analysis, so all
4612 * related structures are ready.
4613 */
4614
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4615 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4616 /* This is the first call */
4617 if (msg->msg_state < HTTP_MSG_BODY)
4618 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4619
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4620 if (msg->msg_state < HTTP_MSG_100_SENT) {
4621 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4622 * send an HTTP/1.1 100 Continue intermediate response.
4623 */
4624 if (msg->flags & HTTP_MSGF_VER_11) {
4625 struct hdr_ctx ctx;
4626 ctx.idx = 0;
4627 /* Expect is allowed in 1.1, look for it */
4628 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4629 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
4630 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
4631 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4632 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4633 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4634 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4635
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4636 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4637 * req->buf->p still points to the beginning of the message. We
4638 * must save the body in msg->next because it survives buffer
4639 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4640 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4641 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4642
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4643 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4644 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4645 else
4646 msg->msg_state = HTTP_MSG_DATA;
4647 }
4648
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4649 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4650 /* We're in content-length mode, we just have to wait for enough data. */
4651 if (req->buf->i - msg->sov < msg->body_len)
4652 goto missing_data;
4653
4654 /* OK we have everything we need now */
4655 goto http_end;
4656 }
4657
4658 /* OK here we're parsing a chunked-encoded message */
4659
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4660 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4661 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4662 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4663 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4664 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4665 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4666
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4667 if (!ret)
4668 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4669 else if (ret < 0) {
4670 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4671 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4672 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4673 }
4674
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4675 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4676 * 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]4677 * least a whole chunk or the whole content length bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4678 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4679 if (msg->msg_state == HTTP_MSG_TRAILERS)
4680 goto http_end;
4681
Willy Tarreau226071e2014-04-10 11:55:45 +0200[diff] [blame]4682 if (req->buf->i - msg->sov >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4683 goto http_end;
4684
4685 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4686 /* we get here if we need to wait for more data. If the buffer is full,
4687 * we have the maximum we can expect.
4688 */
4689 if (buffer_full(req->buf, global.tune.maxrewrite))
4690 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4691
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4692 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4693 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4694 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4695
4696 if (!(s->flags & SN_ERR_MASK))
4697 s->flags |= SN_ERR_CLITO;
4698 if (!(s->flags & SN_FINST_MASK))
4699 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4700 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4701 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4702
4703 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4704 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4705 /* Not enough data. We'll re-use the http-request
4706 * timeout here. Ideally, we should set the timeout
4707 * relative to the accept() date. We just set the
4708 * request timeout once at the beginning of the
4709 * request.
4710 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4711 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4712 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4713 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4714 return 0;
4715 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4716
4717 http_end:
4718 /* The situation will not evolve, so let's give up on the analysis. */
4719 s->logs.tv_request = now; /* update the request timer to reflect full request */
4720 req->analysers &= ~an_bit;
4721 req->analyse_exp = TICK_ETERNITY;
4722 return 1;
4723
4724 return_bad_req: /* let's centralize all bad requests */
4725 txn->req.msg_state = HTTP_MSG_ERROR;
4726 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4727 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4728
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4729 if (!(s->flags & SN_ERR_MASK))
4730 s->flags |= SN_ERR_PRXCOND;
4731 if (!(s->flags & SN_FINST_MASK))
4732 s->flags |= SN_FINST_R;
4733
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4734 return_err_msg:
4735 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4736 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4737 if (s->listener->counters)
4738 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4739 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4740}
4741
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4742/* send a server's name with an outgoing request over an established connection.
4743 * Note: this function is designed to be called once the request has been scheduled
4744 * for being forwarded. This is the reason why it rewinds the buffer before
4745 * proceeding.
4746 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4747int 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]4748
4749 struct hdr_ctx ctx;
4750
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4751 char *hdr_name = be->server_id_hdr_name;
4752 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4753 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4754 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4755 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4756
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4757 ctx.idx = 0;
4758
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4759 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4760 if (old_o) {
4761 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4762 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4763 txn->req.next += old_o;
4764 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4765 }
4766
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4767 old_i = chn->buf->i;
4768 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]4769 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4770 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4771 }
4772
4773 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4774 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4775 memcpy(hdr_val, hdr_name, hdr_name_len);
4776 hdr_val += hdr_name_len;
4777 *hdr_val++ = ':';
4778 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4779 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4780 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]4781
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4782 if (old_o) {
4783 /* If this was a forwarded request, we must readjust the amount of
4784 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4785 * variations. Note that the current state is >= HTTP_MSG_BODY,
4786 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4787 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4788 old_o += chn->buf->i - old_i;
4789 b_adv(chn->buf, old_o);
4790 txn->req.next -= old_o;
4791 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4792 }
4793
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4794 return 0;
4795}
4796
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4797/* Terminate current transaction and prepare a new one. This is very tricky
4798 * right now but it works.
4799 */
4800void http_end_txn_clean_session(struct session *s)
4801{
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4802 int prev_status = s->txn.status;
4803
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4804 /* FIXME: We need a more portable way of releasing a backend's and a
4805 * server's connections. We need a safer way to reinitialize buffer
4806 * flags. We also need a more accurate method for computing per-request
4807 * data.
4808 */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4809
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4810 /* unless we're doing keep-alive, we want to quickly close the connection
4811 * to the server.
4812 */
4813 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4814 !si_conn_ready(s->req->cons)) {
4815 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4816 si_shutr(s->req->cons);
4817 si_shutw(s->req->cons);
4818 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4819
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4820 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4821 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4822 if (unlikely(s->srv_conn))
4823 sess_change_server(s, NULL);
4824 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4825
4826 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4827 session_process_counters(s);
4828
4829 if (s->txn.status) {
4830 int n;
4831
4832 n = s->txn.status / 100;
4833 if (n < 1 || n > 5)
4834 n = 0;
4835
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4836 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4837 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4838 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4839 s->fe->fe_counters.p.http.comp_rsp++;
4840 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4841 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4842 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4843 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4844 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4845 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4846 s->be->be_counters.p.http.comp_rsp++;
4847 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4848 }
4849
4850 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4851 s->logs.bytes_in -= s->req->buf->i;
4852 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4853
4854 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4855 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4856 !(s->flags & SN_MONITOR) &&
4857 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4858 s->do_log(s);
4859 }
4860
Willy Tarreauc177ea72014-06-25 15:36:04 +0200[diff] [blame]4861 /* stop tracking content-based counters */
4862 session_stop_content_counters(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]4863 session_update_time_stats(s);
4864
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4865 s->logs.accept_date = date; /* user-visible date for logging */
4866 s->logs.tv_accept = now; /* corrected date for internal use */
4867 tv_zero(&s->logs.tv_request);
4868 s->logs.t_queue = -1;
4869 s->logs.t_connect = -1;
4870 s->logs.t_data = -1;
4871 s->logs.t_close = 0;
4872 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4873 s->logs.srv_queue_size = 0; /* we will get this number soon */
4874
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4875 s->logs.bytes_in = s->req->total = s->req->buf->i;
4876 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4877
4878 if (s->pend_pos)
4879 pendconn_free(s->pend_pos);
4880
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4881 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4882 if (s->flags & SN_CURR_SESS) {
4883 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4884 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4885 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4886 if (may_dequeue_tasks(objt_server(s->target), s->be))
4887 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4888 }
4889
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4890 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4891
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4892 /* only release our endpoint if we don't intend to reuse the
4893 * connection.
4894 */
4895 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4896 !si_conn_ready(s->req->cons)) {
4897 si_release_endpoint(s->req->cons);
4898 }
4899
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4900 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4901 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4902 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4903 s->req->cons->exp = TICK_ETERNITY;
Willy Tarreauc9200962013-12-31 23:03:09 +0100[diff] [blame]4904 s->req->cons->flags &= SI_FL_DONT_WAKE; /* we're in the context of process_session */
Willy Tarreaub4d05092014-09-01 20:35:55 +0200[diff] [blame]4905 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT|CF_WAKE_CONNECT|CF_WROTE_DATA);
4906 s->rep->flags &= ~(CF_SHUTR|CF_SHUTR_NOW|CF_READ_ATTACHED|CF_READ_ERROR|CF_READ_NOEXP|CF_STREAMER|CF_STREAMER_FAST|CF_WRITE_PARTIAL|CF_NEVER_WAIT|CF_WROTE_DATA);
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4907 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]4908 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE|SN_SRV_REUSED);
Cyril Bonté17f77072014-10-22 22:30:13 +0200[diff] [blame]4909 s->flags &= ~(SN_ERR_MASK|SN_FINST_MASK|SN_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4910
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4911 s->txn.meth = 0;
4912 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4913 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4914
4915 if (prev_status == 401 || prev_status == 407) {
4916 /* In HTTP keep-alive mode, if we receive a 401, we still have
4917 * a chance of being able to send the visitor again to the same
4918 * server over the same connection. This is required by some
4919 * broken protocols such as NTLM, and anyway whenever there is
4920 * an opportunity for sending the challenge to the proper place,
4921 * it's better to do it (at least it helps with debugging).
4922 */
4923 s->txn.flags |= TX_PREFER_LAST;
4924 }
4925
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4926 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4927 s->req->cons->flags |= SI_FL_INDEP_STR;
4928
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4929 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4930 s->req->flags |= CF_NEVER_WAIT;
4931 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4932 }
4933
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4934 /* if the request buffer is not empty, it means we're
4935 * about to process another request, so send pending
4936 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4937 * Just don't do this if the buffer is close to be full,
4938 * because the request will wait for it to flush a little
4939 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4940 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4941 if (s->req->buf->i) {
4942 if (s->rep->buf->o &&
4943 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4944 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]4945 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4946 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4947
4948 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4949 channel_auto_read(s->req);
4950 channel_auto_close(s->req);
4951 channel_auto_read(s->rep);
4952 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4953
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]4954 /* we're in keep-alive with an idle connection, monitor it */
4955 si_idle_conn(s->req->cons);
4956
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4957 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4958 s->rep->analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4959}
4960
4961
4962/* This function updates the request state machine according to the response
4963 * state machine and buffer flags. It returns 1 if it changes anything (flag
4964 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4965 * it is only used to find when a request/response couple is complete. Both
4966 * this function and its equivalent should loop until both return zero. It
4967 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4968 */
4969int http_sync_req_state(struct session *s)
4970{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4971 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4972 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4973 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4974 unsigned int old_state = txn->req.msg_state;
4975
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4976 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4977 return 0;
4978
4979 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4980 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4981 * We can shut the read side unless we want to abort_on_close,
4982 * or we have a POST request. The issue with POST requests is
4983 * that some browsers still send a CRLF after the request, and
4984 * this CRLF must be read so that it does not remain in the kernel
4985 * buffers, otherwise a close could cause an RST on some systems
4986 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4987 * Note that if we're using keep-alive on the client side, we'd
4988 * rather poll now and keep the polling enabled for the whole
4989 * session's life than enabling/disabling it between each
4990 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4991 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4992 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
4993 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
4994 !(s->be->options & PR_O_ABRT_CLOSE) &&
4995 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4996 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4997
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4998 /* if the server closes the connection, we want to immediately react
4999 * and close the socket to save packets and syscalls.
5000 */
5001 chn->cons->flags |= SI_FL_NOHALF;
5002
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5003 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5004 goto wait_other_side;
5005
5006 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5007 /* The server has not finished to respond, so we
5008 * don't want to move in order not to upset it.
5009 */
5010 goto wait_other_side;
5011 }
5012
5013 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5014 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5015 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5016 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5017 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5018 goto wait_other_side;
5019 }
5020
5021 /* When we get here, it means that both the request and the
5022 * response have finished receiving. Depending on the connection
5023 * mode, we'll have to wait for the last bytes to leave in either
5024 * direction, and sometimes for a close to be effective.
5025 */
5026
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5027 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5028 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5029 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5030 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5031 }
5032 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5033 /* Option forceclose is set, or either side wants to close,
5034 * let's enforce it now that we're not expecting any new
5035 * data to come. The caller knows the session is complete
5036 * once both states are CLOSED.
5037 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5038 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5039 channel_shutr_now(chn);
5040 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5041 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5042 }
5043 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5044 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5045 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5046 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5047 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5048 channel_auto_read(chn);
5049 txn->req.msg_state = HTTP_MSG_TUNNEL;
5050 chn->flags |= CF_NEVER_WAIT;
5051 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5052 }
5053
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5054 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5055 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5056 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5057
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5058 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5059 txn->req.msg_state = HTTP_MSG_CLOSING;
5060 goto http_msg_closing;
5061 }
5062 else {
5063 txn->req.msg_state = HTTP_MSG_CLOSED;
5064 goto http_msg_closed;
5065 }
5066 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5067 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5068 }
5069
5070 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5071 http_msg_closing:
5072 /* nothing else to forward, just waiting for the output buffer
5073 * to be empty and for the shutw_now to take effect.
5074 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5075 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5076 txn->req.msg_state = HTTP_MSG_CLOSED;
5077 goto http_msg_closed;
5078 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5079 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5080 txn->req.msg_state = HTTP_MSG_ERROR;
5081 goto wait_other_side;
5082 }
5083 }
5084
5085 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5086 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5087 /* see above in MSG_DONE why we only do this in these states */
5088 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5089 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5090 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5091 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5092 goto wait_other_side;
5093 }
5094
5095 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5096 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5097}
5098
5099
5100/* This function updates the response state machine according to the request
5101 * state machine and buffer flags. It returns 1 if it changes anything (flag
5102 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5103 * it is only used to find when a request/response couple is complete. Both
5104 * this function and its equivalent should loop until both return zero. It
5105 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5106 */
5107int http_sync_res_state(struct session *s)
5108{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5109 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5110 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5111 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5112 unsigned int old_state = txn->rsp.msg_state;
5113
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5114 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5115 return 0;
5116
5117 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5118 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5119 * still monitor the server connection for a possible close
5120 * while the request is being uploaded, so we don't disable
5121 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5122 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5123 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5124
5125 if (txn->req.msg_state == HTTP_MSG_ERROR)
5126 goto wait_other_side;
5127
5128 if (txn->req.msg_state < HTTP_MSG_DONE) {
5129 /* The client seems to still be sending data, probably
5130 * because we got an error response during an upload.
5131 * We have the choice of either breaking the connection
5132 * or letting it pass through. Let's do the later.
5133 */
5134 goto wait_other_side;
5135 }
5136
5137 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5138 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5139 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5140 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5141 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5142 goto wait_other_side;
5143 }
5144
5145 /* When we get here, it means that both the request and the
5146 * response have finished receiving. Depending on the connection
5147 * mode, we'll have to wait for the last bytes to leave in either
5148 * direction, and sometimes for a close to be effective.
5149 */
5150
5151 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5152 /* Server-close mode : shut read and wait for the request
5153 * side to close its output buffer. The caller will detect
5154 * when we're in DONE and the other is in CLOSED and will
5155 * catch that for the final cleanup.
5156 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5157 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5158 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5159 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5160 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5161 /* Option forceclose is set, or either side wants to close,
5162 * let's enforce it now that we're not expecting any new
5163 * data to come. The caller knows the session is complete
5164 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5165 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5166 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5167 channel_shutr_now(chn);
5168 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5169 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5170 }
5171 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5172 /* The last possible modes are keep-alive and tunnel. Tunnel will
5173 * need to forward remaining data. Keep-alive will need to monitor
5174 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5175 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5176 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5177 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5178 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5179 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5180 }
5181
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5182 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5183 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5184 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5185 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5186 goto http_msg_closing;
5187 }
5188 else {
5189 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5190 goto http_msg_closed;
5191 }
5192 }
5193 goto wait_other_side;
5194 }
5195
5196 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5197 http_msg_closing:
5198 /* nothing else to forward, just waiting for the output buffer
5199 * to be empty and for the shutw_now to take effect.
5200 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5201 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5202 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5203 goto http_msg_closed;
5204 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5205 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5206 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5207 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5208 if (objt_server(s->target))
5209 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5210 goto wait_other_side;
5211 }
5212 }
5213
5214 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5215 http_msg_closed:
5216 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5217 bi_erase(chn);
5218 channel_auto_close(chn);
5219 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5220 goto wait_other_side;
5221 }
5222
5223 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5224 /* We force the response to leave immediately if we're waiting for the
5225 * other side, since there is no pending shutdown to push it out.
5226 */
5227 if (!channel_is_empty(chn))
5228 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5229 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5230}
5231
5232
5233/* Resync the request and response state machines. Return 1 if either state
5234 * changes.
5235 */
5236int http_resync_states(struct session *s)
5237{
5238 struct http_txn *txn = &s->txn;
5239 int old_req_state = txn->req.msg_state;
5240 int old_res_state = txn->rsp.msg_state;
5241
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5242 http_sync_req_state(s);
5243 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5244 if (!http_sync_res_state(s))
5245 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5246 if (!http_sync_req_state(s))
5247 break;
5248 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5249
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5250 /* OK, both state machines agree on a compatible state.
5251 * There are a few cases we're interested in :
5252 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5253 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5254 * directions, so let's simply disable both analysers.
5255 * - HTTP_MSG_CLOSED on the response only means we must abort the
5256 * request.
5257 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5258 * with server-close mode means we've completed one request and we
5259 * must re-initialize the server connection.
5260 */
5261
5262 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5263 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5264 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5265 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
5266 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5267 channel_auto_close(s->req);
5268 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5269 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5270 channel_auto_close(s->rep);
5271 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5272 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5273 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
5274 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5275 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5276 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5277 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5278 channel_auto_close(s->rep);
5279 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5280 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5281 channel_abort(s->req);
5282 channel_auto_close(s->req);
5283 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5284 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5285 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5286 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5287 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5288 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5289 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5290 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5291 /* server-close/keep-alive: terminate this transaction,
5292 * possibly killing the server connection and reinitialize
5293 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5294 */
5295 http_end_txn_clean_session(s);
5296 }
5297
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5298 return txn->req.msg_state != old_req_state ||
5299 txn->rsp.msg_state != old_res_state;
5300}
5301
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5302/* This function is an analyser which forwards request body (including chunk
5303 * sizes if any). It is called as soon as we must forward, even if we forward
5304 * zero byte. The only situation where it must not be called is when we're in
5305 * tunnel mode and we want to forward till the close. It's used both to forward
5306 * remaining data and to resync after end of body. It expects the msg_state to
5307 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5308 * 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]5309 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5310 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5311 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5312int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5313{
5314 struct http_txn *txn = &s->txn;
5315 struct http_msg *msg = &s->txn.req;
5316
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5317 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5318 return 0;
5319
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5320 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]5321 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5322 /* Output closed while we were sending data. We must abort and
5323 * wake the other side up.
5324 */
5325 msg->msg_state = HTTP_MSG_ERROR;
5326 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5327 return 1;
5328 }
5329
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5330 /* Note that we don't have to send 100-continue back because we don't
5331 * need the data to complete our job, and it's up to the server to
5332 * decide whether to return 100, 417 or anything else in return of
5333 * an "Expect: 100-continue" header.
5334 */
5335
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5336 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5337 /* we have msg->sov which points to the first byte of message
5338 * body, and req->buf.p still points to the beginning of the
5339 * message. We forward the headers now, as we don't need them
5340 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5341 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5342 b_adv(req->buf, msg->sov);
5343 msg->next -= msg->sov;
5344 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5345
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5346 /* The previous analysers guarantee that the state is somewhere
5347 * between MSG_BODY and the first MSG_DATA. So msg->sol and
5348 * msg->next are always correct.
5349 */
5350 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
5351 if (msg->flags & HTTP_MSGF_TE_CHNK)
5352 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5353 else
5354 msg->msg_state = HTTP_MSG_DATA;
5355 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5356 }
5357
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5358 /* Some post-connect processing might want us to refrain from starting to
5359 * forward data. Currently, the only reason for this is "balance url_param"
5360 * whichs need to parse/process the request after we've enabled forwarding.
5361 */
5362 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
5363 if (!(s->rep->flags & CF_READ_ATTACHED)) {
5364 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5365 req->flags |= CF_WAKE_CONNECT;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5366 goto missing_data;
5367 }
5368 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5369 }
5370
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5371 /* in most states, we should abort in case of early close */
5372 channel_auto_close(req);
5373
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5374 if (req->to_forward) {
5375 /* We can't process the buffer's contents yet */
5376 req->flags |= CF_WAKE_WRITE;
5377 goto missing_data;
5378 }
5379
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5380 while (1) {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5381 if (msg->msg_state == HTTP_MSG_DATA) {
5382 /* must still forward */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5383 /* we may have some pending data starting at req->buf->p */
5384 if (msg->chunk_len > req->buf->i - msg->next) {
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5385 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5386 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5387 }
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5388 msg->next += msg->chunk_len;
5389 msg->chunk_len = 0;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5390
5391 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5392 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5393 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5394 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5395 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5396 }
5397 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5398 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5399 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5400 * TRAILERS state.
5401 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5402 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5403
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5404 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5405 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5406 else if (ret < 0) {
5407 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5408 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5409 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]5410 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5411 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5412 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5413 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5414 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5415 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5416 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5417
5418 if (ret == 0)
5419 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5420 else if (ret < 0) {
5421 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5422 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5423 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]5424 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5425 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5426 /* we're in MSG_CHUNK_SIZE now */
5427 }
5428 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5429 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5430
5431 if (ret == 0)
5432 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5433 else if (ret < 0) {
5434 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5435 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5436 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]5437 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5438 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5439 /* we're in HTTP_MSG_DONE now */
5440 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5441 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5442 int old_state = msg->msg_state;
5443
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5444 /* other states, DONE...TUNNEL */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5445
5446 /* we may have some pending data starting at req->buf->p
5447 * such as last chunk of data or trailers.
5448 */
5449 b_adv(req->buf, msg->next);
Willy Tarreaub4d05092014-09-01 20:35:55 +0200[diff] [blame]5450 if (unlikely(!(s->req->flags & CF_WROTE_DATA)))
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5451 msg->sov -= msg->next;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5452 msg->next = 0;
5453
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5454 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5455 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5456 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5457 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5458 if (http_resync_states(s)) {
5459 /* some state changes occurred, maybe the analyser
5460 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5461 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5462 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5463 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5464 /* request errors are most likely due to
5465 * the server aborting the transfer.
5466 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5467 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5468 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5469 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5470 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5471 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5472 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5473 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5474 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5475
5476 /* If "option abortonclose" is set on the backend, we
5477 * want to monitor the client's connection and forward
5478 * any shutdown notification to the server, which will
5479 * decide whether to close or to go on processing the
5480 * request.
5481 */
5482 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5483 channel_auto_read(req);
5484 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5485 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5486 else if (s->txn.meth == HTTP_METH_POST) {
5487 /* POST requests may require to read extra CRLF
5488 * sent by broken browsers and which could cause
5489 * an RST to be sent upon close on some systems
5490 * (eg: Linux).
5491 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5492 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5493 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5494
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5495 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5496 }
5497 }
5498
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5499 missing_data:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5500 /* we may have some pending data starting at req->buf->p */
5501 b_adv(req->buf, msg->next);
Willy Tarreaub4d05092014-09-01 20:35:55 +0200[diff] [blame]5502 if (unlikely(!(s->req->flags & CF_WROTE_DATA)))
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5503 msg->sov -= msg->next + MIN(msg->chunk_len, req->buf->i);
5504
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5505 msg->next = 0;
5506 msg->chunk_len -= channel_forward(req, msg->chunk_len);
5507
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5508 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5509 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5510 if (!(s->flags & SN_ERR_MASK))
5511 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5512 if (!(s->flags & SN_FINST_MASK)) {
5513 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5514 s->flags |= SN_FINST_H;
5515 else
5516 s->flags |= SN_FINST_D;
5517 }
5518
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5519 s->fe->fe_counters.cli_aborts++;
5520 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5521 if (objt_server(s->target))
5522 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5523
5524 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5525 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5526
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5527 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5528 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5529 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5530
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5531 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5532 * 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]5533 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5534 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5535 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5536
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5537 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5538 * 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]5539 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5540 * modes are already handled by the stream sock layer. We must not do
5541 * this in content-length mode because it could present the MSG_MORE
5542 * flag with the last block of forwarded data, which would cause an
5543 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5544 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5545 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5546 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5547
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5548 return 0;
5549
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5550 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5551 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5552 if (s->listener->counters)
5553 s->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5554
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5555 return_bad_req_stats_ok:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5556 /* we may have some pending data starting at req->buf->p */
5557 b_adv(req->buf, msg->next);
5558 msg->next = 0;
5559
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5560 txn->req.msg_state = HTTP_MSG_ERROR;
5561 if (txn->status) {
5562 /* Note: we don't send any error if some data were already sent */
5563 stream_int_retnclose(req->prod, NULL);
5564 } else {
5565 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5566 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5567 }
5568 req->analysers = 0;
5569 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]5570
5571 if (!(s->flags & SN_ERR_MASK))
5572 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5573 if (!(s->flags & SN_FINST_MASK)) {
5574 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5575 s->flags |= SN_FINST_H;
5576 else
5577 s->flags |= SN_FINST_D;
5578 }
5579 return 0;
5580
5581 aborted_xfer:
5582 txn->req.msg_state = HTTP_MSG_ERROR;
5583 if (txn->status) {
5584 /* Note: we don't send any error if some data were already sent */
5585 stream_int_retnclose(req->prod, NULL);
5586 } else {
5587 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5588 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5589 }
5590 req->analysers = 0;
5591 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5592
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5593 s->fe->fe_counters.srv_aborts++;
5594 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5595 if (objt_server(s->target))
5596 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5597
5598 if (!(s->flags & SN_ERR_MASK))
5599 s->flags |= SN_ERR_SRVCL;
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 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5606 return 0;
5607}
5608
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5609/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5610 * processing can continue on next analysers, or zero if it either needs more
5611 * data or wants to immediately abort the response (eg: timeout, error, ...). It
5612 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
5613 * when it has nothing left to do, and may remove any analyser when it wants to
5614 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5615 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5616int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5617{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5618 struct http_txn *txn = &s->txn;
5619 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5620 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5621 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5622 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5623 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5624
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5625 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]5626 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5627 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5628 rep,
5629 rep->rex, rep->wex,
5630 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5631 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5632 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5633
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5634 /*
5635 * Now parse the partial (or complete) lines.
5636 * We will check the response syntax, and also join multi-line
5637 * headers. An index of all the lines will be elaborated while
5638 * parsing.
5639 *
5640 * For the parsing, we use a 28 states FSM.
5641 *
5642 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5643 * rep->buf->p = beginning of response
5644 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5645 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5646 * msg->eol = end of current header or line (LF or CRLF)
5647 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5648 */
5649
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5650 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5651 /* There's a protected area at the end of the buffer for rewriting
5652 * purposes. We don't want to start to parse the request if the
5653 * protected area is affected, because we may have to move processed
5654 * data later, which is much more complicated.
5655 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5656 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5657 if (unlikely(!channel_reserved(rep))) {
5658 /* some data has still not left the buffer, wake us once that's done */
5659 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5660 goto abort_response;
5661 channel_dont_close(rep);
5662 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5663 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5664 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5665 }
5666
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5667 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5668 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5669 buffer_slow_realign(rep->buf);
5670
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5671 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5672 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5673 }
5674
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5675 /* 1: we might have to print this header in debug mode */
5676 if (unlikely((global.mode & MODE_DEBUG) &&
5677 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau8767b132014-10-21 19:36:09 +0200[diff] [blame]5678 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5679 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5680
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5681 sol = rep->buf->p;
5682 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5683 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5684
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5685 sol += hdr_idx_first_pos(&txn->hdr_idx);
5686 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5687
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5688 while (cur_idx) {
5689 eol = sol + txn->hdr_idx.v[cur_idx].len;
5690 debug_hdr("srvhdr", s, sol, eol);
5691 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5692 cur_idx = txn->hdr_idx.v[cur_idx].next;
5693 }
5694 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5695
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5696 /*
5697 * Now we quickly check if we have found a full valid response.
5698 * If not so, we check the FD and buffer states before leaving.
5699 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5700 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5701 * responses are checked first.
5702 *
5703 * Depending on whether the client is still there or not, we
5704 * may send an error response back or not. Note that normally
5705 * we should only check for HTTP status there, and check I/O
5706 * errors somewhere else.
5707 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5708
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5709 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5710 /* Invalid response */
5711 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5712 /* we detected a parsing error. We want to archive this response
5713 * in the dedicated proxy area for later troubleshooting.
5714 */
5715 hdr_response_bad:
5716 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5717 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]5718
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5719 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5720 if (objt_server(s->target)) {
5721 objt_server(s->target)->counters.failed_resp++;
5722 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5723 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5724 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5725 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5726 rep->analysers = 0;
5727 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5728 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5729 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5730 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5731
5732 if (!(s->flags & SN_ERR_MASK))
5733 s->flags |= SN_ERR_PRXCOND;
5734 if (!(s->flags & SN_FINST_MASK))
5735 s->flags |= SN_FINST_H;
5736
5737 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5738 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5739
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5740 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5741 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5742 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5743 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5744 goto hdr_response_bad;
5745 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5746
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5747 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5748 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5749 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5750 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]5751 else if (txn->flags & TX_NOT_FIRST)
5752 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5753
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5754 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5755 if (objt_server(s->target)) {
5756 objt_server(s->target)->counters.failed_resp++;
5757 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5758 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5759
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5760 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5761 rep->analysers = 0;
5762 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5763 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5764 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5765 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5766
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5767 if (!(s->flags & SN_ERR_MASK))
5768 s->flags |= SN_ERR_SRVCL;
5769 if (!(s->flags & SN_FINST_MASK))
5770 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5771 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5772 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5773
Willy Tarreau2a4f5112014-06-23 15:22:31 +0200[diff] [blame]5774 /* read timeout : return a 504 to the client. */
5775 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5776 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5777 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]5778 else if (txn->flags & TX_NOT_FIRST)
5779 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5780
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5781 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5782 if (objt_server(s->target)) {
5783 objt_server(s->target)->counters.failed_resp++;
5784 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5785 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5786
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5787 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5788 rep->analysers = 0;
5789 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5790 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5791 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5792 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5793
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5794 if (!(s->flags & SN_ERR_MASK))
5795 s->flags |= SN_ERR_SRVTO;
5796 if (!(s->flags & SN_FINST_MASK))
5797 s->flags |= SN_FINST_H;
5798 return 0;
5799 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5800
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5801 /* client abort with an abortonclose */
5802 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5803 s->fe->fe_counters.cli_aborts++;
5804 s->be->be_counters.cli_aborts++;
5805 if (objt_server(s->target))
5806 objt_server(s->target)->counters.cli_aborts++;
5807
5808 rep->analysers = 0;
5809 channel_auto_close(rep);
5810
5811 txn->status = 400;
5812 bi_erase(rep);
5813 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5814
5815 if (!(s->flags & SN_ERR_MASK))
5816 s->flags |= SN_ERR_CLICL;
5817 if (!(s->flags & SN_FINST_MASK))
5818 s->flags |= SN_FINST_H;
5819
5820 /* process_session() will take care of the error */
5821 return 0;
5822 }
5823
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5824 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5825 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5826 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5827 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]5828 else if (txn->flags & TX_NOT_FIRST)
5829 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5830
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5831 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5832 if (objt_server(s->target)) {
5833 objt_server(s->target)->counters.failed_resp++;
5834 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5835 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5836
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5837 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5838 rep->analysers = 0;
5839 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5840 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5841 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5842 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5843
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5844 if (!(s->flags & SN_ERR_MASK))
5845 s->flags |= SN_ERR_SRVCL;
5846 if (!(s->flags & SN_FINST_MASK))
5847 s->flags |= SN_FINST_H;
5848 return 0;
5849 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5850
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5851 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5852 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5853 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5854 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]5855 else if (txn->flags & TX_NOT_FIRST)
5856 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5857
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5858 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5859 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5860 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5861
5862 if (!(s->flags & SN_ERR_MASK))
5863 s->flags |= SN_ERR_CLICL;
5864 if (!(s->flags & SN_FINST_MASK))
5865 s->flags |= SN_FINST_H;
5866
5867 /* process_session() will take care of the error */
5868 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5869 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5870
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5871 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5872 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5873 return 0;
5874 }
5875
5876 /* More interesting part now : we know that we have a complete
5877 * response which at least looks like HTTP. We have an indicator
5878 * of each header's length, so we can parse them quickly.
5879 */
5880
5881 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5882 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]5883
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5884 /*
5885 * 1: get the status code
5886 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5887 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5888 if (n < 1 || n > 5)
5889 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5890 /* when the client triggers a 4xx from the server, it's most often due
5891 * to a missing object or permission. These events should be tracked
5892 * because if they happen often, it may indicate a brute force or a
5893 * vulnerability scan.
5894 */
5895 if (n == 4)
5896 session_inc_http_err_ctr(s);
5897
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5898 if (objt_server(s->target))
5899 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5900
Willy Tarreau55645552015-05-01 13:26:00 +0200[diff] [blame]5901 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
5902 * exactly one digit "." one digit. This check may be disabled using
5903 * option accept-invalid-http-response.
5904 */
5905 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
5906 if (msg->sl.st.v_l != 8) {
5907 msg->err_pos = 0;
5908 goto hdr_response_bad;
5909 }
5910
5911 if (rep->buf->p[4] != '/' ||
5912 !isdigit((unsigned char)rep->buf->p[5]) ||
5913 rep->buf->p[6] != '.' ||
5914 !isdigit((unsigned char)rep->buf->p[7])) {
5915 msg->err_pos = 4;
5916 goto hdr_response_bad;
5917 }
5918 }
5919
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5920 /* check if the response is HTTP/1.1 or above */
5921 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5922 ((rep->buf->p[5] > '1') ||
5923 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5924 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5925
5926 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5927 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]5928
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5929 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5930 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5931
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5932 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]5933
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5934 /* Adjust server's health based on status code. Note: status codes 501
5935 * and 505 are triggered on demand by client request, so we must not
5936 * count them as server failures.
5937 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5938 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5939 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5940 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5941 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5942 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5943 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5944
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5945 /*
5946 * 2: check for cacheability.
5947 */
5948
5949 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5950 case 100:
5951 /*
5952 * We may be facing a 100-continue response, in which case this
5953 * is not the right response, and we're waiting for the next one.
5954 * Let's allow this response to go to the client and wait for the
5955 * next one.
5956 */
5957 hdr_idx_init(&txn->hdr_idx);
5958 msg->next -= channel_forward(rep, msg->next);
5959 msg->msg_state = HTTP_MSG_RPBEFORE;
5960 txn->status = 0;
5961 s->logs.t_data = -1; /* was not a response yet */
5962 goto next_one;
5963
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5964 case 200:
5965 case 203:
5966 case 206:
5967 case 300:
5968 case 301:
5969 case 410:
5970 /* RFC2616 @13.4:
5971 * "A response received with a status code of
5972 * 200, 203, 206, 300, 301 or 410 MAY be stored
5973 * by a cache (...) unless a cache-control
5974 * directive prohibits caching."
5975 *
5976 * RFC2616 @9.5: POST method :
5977 * "Responses to this method are not cacheable,
5978 * unless the response includes appropriate
5979 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5980 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5981 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5982 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5983 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5984 break;
5985 default:
5986 break;
5987 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5988
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5989 /*
5990 * 3: we may need to capture headers
5991 */
5992 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5993 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5994 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5995 txn->rsp.cap, s->fe->rsp_cap);
5996
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]5997 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
5998 * by RFC7230#3.3.3 :
5999 *
6000 * The length of a message body is determined by one of the following
6001 * (in order of precedence):
6002 *
6003 * 1. Any response to a HEAD request and any response with a 1xx
6004 * (Informational), 204 (No Content), or 304 (Not Modified) status
6005 * code is always terminated by the first empty line after the
6006 * header fields, regardless of the header fields present in the
6007 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6008 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]6009 * 2. Any 2xx (Successful) response to a CONNECT request implies that
6010 * the connection will become a tunnel immediately after the empty
6011 * line that concludes the header fields. A client MUST ignore any
6012 * Content-Length or Transfer-Encoding header fields received in
6013 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6014 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]6015 * 3. If a Transfer-Encoding header field is present and the chunked
6016 * transfer coding (Section 4.1) is the final encoding, the message
6017 * body length is determined by reading and decoding the chunked
6018 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6019 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]6020 * If a Transfer-Encoding header field is present in a response and
6021 * the chunked transfer coding is not the final encoding, the
6022 * message body length is determined by reading the connection until
6023 * it is closed by the server. If a Transfer-Encoding header field
6024 * is present in a request and the chunked transfer coding is not
6025 * the final encoding, the message body length cannot be determined
6026 * reliably; the server MUST respond with the 400 (Bad Request)
6027 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6028 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]6029 * If a message is received with both a Transfer-Encoding and a
6030 * Content-Length header field, the Transfer-Encoding overrides the
6031 * Content-Length. Such a message might indicate an attempt to
6032 * perform request smuggling (Section 9.5) or response splitting
6033 * (Section 9.4) and ought to be handled as an error. A sender MUST
6034 * remove the received Content-Length field prior to forwarding such
6035 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6036 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]6037 * 4. If a message is received without Transfer-Encoding and with
6038 * either multiple Content-Length header fields having differing
6039 * field-values or a single Content-Length header field having an
6040 * invalid value, then the message framing is invalid and the
6041 * recipient MUST treat it as an unrecoverable error. If this is a
6042 * request message, the server MUST respond with a 400 (Bad Request)
6043 * status code and then close the connection. If this is a response
6044 * message received by a proxy, the proxy MUST close the connection
6045 * to the server, discard the received response, and send a 502 (Bad
6046 * Gateway) response to the client. If this is a response message
6047 * received by a user agent, the user agent MUST close the
6048 * connection to the server and discard the received response.
6049 *
6050 * 5. If a valid Content-Length header field is present without
6051 * Transfer-Encoding, its decimal value defines the expected message
6052 * body length in octets. If the sender closes the connection or
6053 * the recipient times out before the indicated number of octets are
6054 * received, the recipient MUST consider the message to be
6055 * incomplete and close the connection.
6056 *
6057 * 6. If this is a request message and none of the above are true, then
6058 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6059 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]6060 * 7. Otherwise, this is a response message without a declared message
6061 * body length, so the message body length is determined by the
6062 * number of octets received prior to the server closing the
6063 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6064 */
6065
6066 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6067 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6068 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6069 * FIXME: should we parse anyway and return an error on chunked encoding ?
6070 */
6071 if (txn->meth == HTTP_METH_HEAD ||
6072 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6073 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6074 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]6075 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6076 goto skip_content_length;
6077 }
6078
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6079 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6080 ctx.idx = 0;
Willy Tarreaue77bc172015-05-01 10:06:30 +0200[diff] [blame]6081 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6082 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6083 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6084 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6085 /* bad transfer-encoding (chunked followed by something else) */
6086 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6087 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6088 break;
6089 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6090 }
6091
Willy Tarreaudfa3d922015-04-30 10:57:51 +0200[diff] [blame]6092 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6093 ctx.idx = 0;
Willy Tarreau660418d2015-05-01 10:25:45 +0200[diff] [blame]6094 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreaudfa3d922015-04-30 10:57:51 +0200[diff] [blame]6095 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6096 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6097 }
Willy Tarreau660418d2015-05-01 10:25:45 +0200[diff] [blame]6098 else while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6099 signed long long cl;
6100
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6101 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6102 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6103 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6104 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6105
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6106 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6107 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6108 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6109 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6110
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6111 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6112 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6113 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6114 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6115
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6116 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6117 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6118 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6119 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6120
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6121 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6122 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6123 }
6124
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6125 if (s->fe->comp || s->be->comp)
6126 select_compression_response_header(s, rep->buf);
6127
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6128skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6129 /* Now we have to check if we need to modify the Connection header.
6130 * This is more difficult on the response than it is on the request,
6131 * because we can have two different HTTP versions and we don't know
6132 * how the client will interprete a response. For instance, let's say
6133 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6134 * HTTP/1.1 response without any header. Maybe it will bound itself to
6135 * HTTP/1.0 because it only knows about it, and will consider the lack
6136 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6137 * the lack of header as a keep-alive. Thus we will use two flags
6138 * indicating how a request MAY be understood by the client. In case
6139 * of multiple possibilities, we'll fix the header to be explicit. If
6140 * ambiguous cases such as both close and keepalive are seen, then we
6141 * will fall back to explicit close. Note that we won't take risks with
6142 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6143 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6144 */
6145
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6146 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6147 txn->status == 101)) {
6148 /* Either we've established an explicit tunnel, or we're
6149 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6150 * to understand the next protocols. We have to switch to tunnel
6151 * mode, so that we transfer the request and responses then let
6152 * this protocol pass unmodified. When we later implement specific
6153 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6154 * header which contains information about that protocol for
6155 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6156 */
6157 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6158 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6159 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6160 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6161 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6162 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6163 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6164
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6165 /* this situation happens when combining pretend-keepalive with httpclose. */
6166 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6167 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6168 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6169 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6170
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6171 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6172 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6173 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6174 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6175
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6176 /* now adjust header transformations depending on current state */
6177 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6178 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6179 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6180 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6181 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6182 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6183 else { /* SCL / KAL */
6184 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6185 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6186 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6187 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6188
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6189 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6190 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6191
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6192 /* Some keep-alive responses are converted to Server-close if
6193 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6194 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6195 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6196 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6197 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6198 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6199 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6200 }
6201
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6202 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6203 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6204
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6205 /* end of job, return OK */
6206 rep->analysers &= ~an_bit;
6207 rep->analyse_exp = TICK_ETERNITY;
6208 channel_auto_close(rep);
6209 return 1;
6210
6211 abort_keep_alive:
6212 /* A keep-alive request to the server failed on a network error.
6213 * The client is required to retry. We need to close without returning
6214 * any other information so that the client retries.
6215 */
6216 txn->status = 0;
6217 rep->analysers = 0;
6218 s->req->analysers = 0;
6219 channel_auto_close(rep);
6220 s->logs.logwait = 0;
6221 s->logs.level = 0;
6222 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
6223 bi_erase(rep);
6224 stream_int_retnclose(rep->cons, NULL);
6225 return 0;
6226}
6227
6228/* This function performs all the processing enabled for the current response.
6229 * It normally returns 1 unless it wants to break. It relies on buffers flags,
6230 * and updates s->rep->analysers. It might make sense to explode it into several
6231 * other functions. It works like process_request (see indications above).
6232 */
6233int http_process_res_common(struct session *s, struct channel *rep, int an_bit, struct proxy *px)
6234{
6235 struct http_txn *txn = &s->txn;
6236 struct http_msg *msg = &txn->rsp;
6237 struct proxy *cur_proxy;
6238 struct cond_wordlist *wl;
6239 struct http_res_rule *http_res_last_rule = NULL;
6240
6241 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
6242 now_ms, __FUNCTION__,
6243 s,
6244 rep,
6245 rep->rex, rep->wex,
6246 rep->flags,
6247 rep->buf->i,
6248 rep->analysers);
6249
6250 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6251 return 0;
6252
6253 rep->analysers &= ~an_bit;
6254 rep->analyse_exp = TICK_ETERNITY;
6255
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6256 /* The stats applet needs to adjust the Connection header but we don't
6257 * apply any filter there.
6258 */
6259 if (unlikely(objt_applet(s->target) == &http_stats_applet))
6260 goto skip_filters;
6261
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6262 /*
6263 * We will have to evaluate the filters.
6264 * As opposed to version 1.2, now they will be evaluated in the
6265 * filters order and not in the header order. This means that
6266 * each filter has to be validated among all headers.
6267 *
6268 * Filters are tried with ->be first, then with ->fe if it is
6269 * different from ->be.
6270 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6271
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6272 cur_proxy = s->be;
6273 while (1) {
6274 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6275
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6276 /* evaluate http-response rules */
6277 if (!http_res_last_rule)
6278 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]6279
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6280 /* try headers filters */
6281 if (rule_set->rsp_exp != NULL) {
6282 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6283 return_bad_resp:
6284 if (objt_server(s->target)) {
6285 objt_server(s->target)->counters.failed_resp++;
6286 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6287 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6288 s->be->be_counters.failed_resp++;
6289 return_srv_prx_502:
6290 rep->analysers = 0;
6291 txn->status = 502;
6292 s->logs.t_data = -1; /* was not a valid response */
6293 rep->prod->flags |= SI_FL_NOLINGER;
6294 bi_erase(rep);
6295 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
6296 if (!(s->flags & SN_ERR_MASK))
6297 s->flags |= SN_ERR_PRXCOND;
6298 if (!(s->flags & SN_FINST_MASK))
6299 s->flags |= SN_FINST_H;
6300 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6301 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6302 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6303
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6304 /* has the response been denied ? */
6305 if (txn->flags & TX_SVDENY) {
6306 if (objt_server(s->target))
6307 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6308
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6309 s->be->be_counters.denied_resp++;
6310 s->fe->fe_counters.denied_resp++;
6311 if (s->listener->counters)
6312 s->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6313
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6314 goto return_srv_prx_502;
6315 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6316
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6317 /* add response headers from the rule sets in the same order */
6318 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6319 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6320 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6321 if (wl->cond) {
6322 int ret = acl_exec_cond(wl->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
6323 ret = acl_pass(ret);
6324 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6325 ret = !ret;
6326 if (!ret)
6327 continue;
6328 }
6329 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6330 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6331 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6332
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6333 /* check whether we're already working on the frontend */
6334 if (cur_proxy == s->fe)
6335 break;
6336 cur_proxy = s->fe;
6337 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6338
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6339 /* OK that's all we can do for 1xx responses */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6340 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6341 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6342
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6343 /*
6344 * Now check for a server cookie.
6345 */
6346 if (s->be->cookie_name || s->be->appsession_name || s->fe->capture_name ||
6347 (s->be->options & PR_O_CHK_CACHE))
6348 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6349
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6350 /*
6351 * Check for cache-control or pragma headers if required.
6352 */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6353 if (((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)) && txn->status != 101)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6354 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6355
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6356 /*
6357 * Add server cookie in the response if needed
6358 */
6359 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6360 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
6361 (!(s->flags & SN_DIRECT) ||
6362 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6363 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6364 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6365 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6366 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
6367 !(s->flags & SN_IGNORE_PRST)) {
6368 /* the server is known, it's not the one the client requested, or the
6369 * cookie's last seen date needs to be refreshed. We have to
6370 * insert a set-cookie here, except if we want to insert only on POST
6371 * requests and this one isn't. Note that servers which don't have cookies
6372 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6373 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6374 if (!objt_server(s->target)->cookie) {
6375 chunk_printf(&trash,
6376 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6377 s->be->cookie_name);
6378 }
6379 else {
6380 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]6381
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6382 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6383 /* emit last_date, which is mandatory */
6384 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6385 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6386 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6387
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6388 if (s->be->cookie_maxlife) {
6389 /* emit first_date, which is either the original one or
6390 * the current date.
6391 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6392 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6393 s30tob64(txn->cookie_first_date ?
6394 txn->cookie_first_date >> 2 :
6395 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6396 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6397 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6398 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6399 chunk_appendf(&trash, "; path=/");
6400 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6401
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6402 if (s->be->cookie_domain)
6403 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6404
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6405 if (s->be->ck_opts & PR_CK_HTTPONLY)
6406 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6407
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6408 if (s->be->ck_opts & PR_CK_SECURE)
6409 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6410
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6411 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6412 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6413
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6414 txn->flags &= ~TX_SCK_MASK;
6415 if (objt_server(s->target)->cookie && (s->flags & SN_DIRECT))
6416 /* the server did not change, only the date was updated */
6417 txn->flags |= TX_SCK_UPDATED;
6418 else
6419 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6420
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6421 /* Here, we will tell an eventual cache on the client side that we don't
6422 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6423 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6424 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6425 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6426 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6427
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6428 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6429
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6430 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6431 "Cache-control: private", 22) < 0))
6432 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6433 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6434 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6435
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6436 /*
6437 * Check if result will be cacheable with a cookie.
6438 * We'll block the response if security checks have caught
6439 * nasty things such as a cacheable cookie.
6440 */
6441 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6442 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6443 (s->be->options & PR_O_CHK_CACHE)) {
6444 /* we're in presence of a cacheable response containing
6445 * a set-cookie header. We'll block it as requested by
6446 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6447 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6448 if (objt_server(s->target))
6449 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6450
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6451 s->be->be_counters.denied_resp++;
6452 s->fe->fe_counters.denied_resp++;
6453 if (s->listener->counters)
6454 s->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6455
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6456 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6457 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6458 send_log(s->be, LOG_ALERT,
6459 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6460 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6461 goto return_srv_prx_502;
6462 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6463
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6464 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6465 /*
6466 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6467 * If an "Upgrade" token is found, the header is left untouched in order
6468 * not to have to deal with some client bugs : some of them fail an upgrade
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6469 * if anything but "Upgrade" is present in the Connection header. We don't
6470 * want to touch any 101 response either since it's switching to another
6471 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6472 */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6473 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6474 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
6475 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6476 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6477 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6478
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6479 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6480 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6481 /* we want a keep-alive response here. Keep-alive header
6482 * required if either side is not 1.1.
6483 */
6484 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6485 want_flags |= TX_CON_KAL_SET;
6486 }
6487 else {
6488 /* we want a close response here. Close header required if
6489 * the server is 1.1, regardless of the client.
6490 */
6491 if (msg->flags & HTTP_MSGF_VER_11)
6492 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6493 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6494
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6495 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6496 http_change_connection_header(txn, msg, want_flags);
6497 }
6498
6499 skip_header_mangling:
6500 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
6501 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
6502 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6503
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6504 /* if the user wants to log as soon as possible, without counting
6505 * bytes from the server, then this is the right moment. We have
6506 * to temporarily assign bytes_out to log what we currently have.
6507 */
6508 if (!LIST_ISEMPTY(&s->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
6509 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6510 s->logs.bytes_out = txn->rsp.eoh;
6511 s->do_log(s);
6512 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6513 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6514 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6515}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6516
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6517/* This function is an analyser which forwards response body (including chunk
6518 * sizes if any). It is called as soon as we must forward, even if we forward
6519 * zero byte. The only situation where it must not be called is when we're in
6520 * tunnel mode and we want to forward till the close. It's used both to forward
6521 * remaining data and to resync after end of body. It expects the msg_state to
6522 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
6523 * 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]6524 *
6525 * It is capable of compressing response data both in content-length mode and
6526 * in chunked mode. The state machines follows different flows depending on
6527 * whether content-length and chunked modes are used, since there are no
6528 * trailers in content-length :
6529 *
6530 * chk-mode cl-mode
6531 * ,----- BODY -----.
6532 * / \
6533 * V size > 0 V chk-mode
6534 * .--> SIZE -------------> DATA -------------> CRLF
6535 * | | size == 0 | last byte |
6536 * | v final crlf v inspected |
6537 * | TRAILERS -----------> DONE |
6538 * | |
6539 * `----------------------------------------------'
6540 *
6541 * Compression only happens in the DATA state, and must be flushed in final
6542 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6543 * is performed at once on final states for all bytes parsed, or when leaving
6544 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6545 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6546int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6547{
6548 struct http_txn *txn = &s->txn;
6549 struct http_msg *msg = &s->txn.rsp;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6550 static struct buffer *tmpbuf = NULL;
6551 int compressing = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6552 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6553
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6554 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6555 return 0;
6556
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6557 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]6558 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]6559 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6560 /* Output closed while we were sending data. We must abort and
6561 * wake the other side up.
6562 */
6563 msg->msg_state = HTTP_MSG_ERROR;
6564 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6565 return 1;
6566 }
6567
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6568 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6569 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6570
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]6571 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6572 /* we have msg->sov which points to the first byte of message
6573 * body, and res->buf.p still points to the beginning of the
6574 * message. We forward the headers now, as we don't need them
6575 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6576 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6577 b_adv(res->buf, msg->sov);
6578 msg->next -= msg->sov;
6579 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6580
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6581 /* The previous analysers guarantee that the state is somewhere
6582 * between MSG_BODY and the first MSG_DATA. So msg->sol and
6583 * msg->next are always correct.
6584 */
6585 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
6586 if (msg->flags & HTTP_MSGF_TE_CHNK)
6587 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6588 else
6589 msg->msg_state = HTTP_MSG_DATA;
6590 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6591 }
6592
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6593 if (res->to_forward) {
6594 /* We can't process the buffer's contents yet */
6595 res->flags |= CF_WAKE_WRITE;
6596 goto missing_data;
6597 }
6598
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6599 if (unlikely(s->comp_algo != NULL) && msg->msg_state < HTTP_MSG_TRAILERS) {
6600 /* We need a compression buffer in the DATA state to put the
6601 * output of compressed data, and in CRLF state to let the
6602 * TRAILERS state finish the job of removing the trailing CRLF.
6603 */
6604 if (unlikely(tmpbuf == NULL)) {
6605 /* this is the first time we need the compression buffer */
6606 tmpbuf = pool_alloc2(pool2_buffer);
6607 if (tmpbuf == NULL)
6608 goto aborted_xfer; /* no memory */
6609 }
6610
6611 ret = http_compression_buffer_init(s, res->buf, tmpbuf);
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6612 if (ret < 0) {
6613 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6614 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6615 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6616 compressing = 1;
6617 }
6618
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6619 while (1) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6620 switch (msg->msg_state - HTTP_MSG_DATA) {
6621 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6622 /* we may have some pending data starting at res->buf->p */
6623 if (unlikely(s->comp_algo)) {
Willy Tarreau7f2f8d52014-04-18 00:20:14 +0200[diff] [blame]6624 ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6625 if (ret < 0)
6626 goto aborted_xfer;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6627
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6628 if (msg->chunk_len) {
6629 /* input empty or output full */
6630 if (res->buf->i > msg->next)
6631 res->flags |= CF_WAKE_WRITE;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6632 goto missing_data;
6633 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6634 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6635 else {
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6636 if (msg->chunk_len > res->buf->i - msg->next) {
6637 /* output full */
6638 res->flags |= CF_WAKE_WRITE;
6639 goto missing_data;
6640 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6641 msg->next += msg->chunk_len;
6642 msg->chunk_len = 0;
6643 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6644
6645 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6646 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6647 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6648 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6649 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6650 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6651 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6652 /* fall through for HTTP_MSG_CHUNK_CRLF */
6653
6654 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6655 /* we want the CRLF after the data */
6656
6657 ret = http_skip_chunk_crlf(msg);
6658 if (ret == 0)
6659 goto missing_data;
6660 else if (ret < 0) {
6661 if (msg->err_pos >= 0)
6662 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
6663 goto return_bad_res;
6664 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6665 /* we're in MSG_CHUNK_SIZE now, fall through */
6666
6667 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6668 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6669 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6670 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6671 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6672
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6673 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6674 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6675 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6676 else if (ret < 0) {
6677 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6678 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]6679 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6680 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6681 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6682 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6683
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6684 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6685 if (unlikely(compressing)) {
6686 /* we need to flush output contents before syncing FSMs */
6687 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6688 compressing = 0;
6689 }
6690
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6691 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6692 if (ret == 0)
6693 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6694 else if (ret < 0) {
6695 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6696 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]6697 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6698 }
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6699 /* we're in HTTP_MSG_DONE now, fall through */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6700
6701 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6702 /* other states, DONE...TUNNEL */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6703 if (unlikely(compressing)) {
6704 /* we need to flush output contents before syncing FSMs */
6705 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6706 compressing = 0;
6707 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6708
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6709 /* we may have some pending data starting at res->buf->p
6710 * such as a last chunk of data or trailers.
6711 */
6712 b_adv(res->buf, msg->next);
6713 msg->next = 0;
6714
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6715 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6716 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6717 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6718 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6719 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6720
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6721 if (http_resync_states(s)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6722 /* some state changes occurred, maybe the analyser
6723 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6724 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6725 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6726 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6727 /* response errors are most likely due to
6728 * the client aborting the transfer.
6729 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6730 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6731 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6732 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6733 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6734 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6735 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6736 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6737 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6738 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6739 }
6740 }
6741
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6742 missing_data:
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6743 /* we may have some pending data starting at res->buf->p */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6744 if (unlikely(compressing)) {
6745 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6746 compressing = 0;
6747 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6748
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6749 if ((s->comp_algo == NULL || msg->msg_state >= HTTP_MSG_TRAILERS)) {
6750 b_adv(res->buf, msg->next);
6751 msg->next = 0;
6752 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6753 }
6754
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6755 if (res->flags & CF_SHUTW)
6756 goto aborted_xfer;
6757
6758 /* stop waiting for data if the input is closed before the end. If the
6759 * client side was already closed, it means that the client has aborted,
6760 * so we don't want to count this as a server abort. Otherwise it's a
6761 * server abort.
6762 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6763 if (res->flags & CF_SHUTR) {
Willy Tarreaub2c6a782014-04-23 20:29:01 +0200[diff] [blame]6764 if ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6765 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6766 if (!(s->flags & SN_ERR_MASK))
6767 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6768 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6769 if (objt_server(s->target))
6770 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6771 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6772 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6773
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6774 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6775 if (!s->req->analysers)
6776 goto return_bad_res;
6777
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6778 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6779 * 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]6780 * Similarly, with keep-alive on the client side, we don't want to forward a
6781 * close.
6782 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6783 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6784 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6785 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6786 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6787
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6788 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6789 * 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]6790 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6791 * modes are already handled by the stream sock layer. We must not do
6792 * this in content-length mode because it could present the MSG_MORE
6793 * flag with the last block of forwarded data, which would cause an
6794 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6795 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6796 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6797 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6798
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6799 /* the session handler will take care of timeouts and errors */
6800 return 0;
6801
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6802 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6803 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6804 if (objt_server(s->target))
6805 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6806
6807 return_bad_res_stats_ok:
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]6808 if (unlikely(compressing)) {
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6809 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]6810 compressing = 0;
6811 }
6812
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6813 /* we may have some pending data starting at res->buf->p */
6814 if (s->comp_algo == NULL) {
6815 b_adv(res->buf, msg->next);
6816 msg->next = 0;
6817 }
6818
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6819 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6820 /* don't send any error message as we're in the body */
6821 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6822 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6823 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]6824 if (objt_server(s->target))
6825 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6826
6827 if (!(s->flags & SN_ERR_MASK))
6828 s->flags |= SN_ERR_PRXCOND;
6829 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6830 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6831 return 0;
6832
6833 aborted_xfer:
Willy Tarreau6fef8ae2014-04-22 21:22:06 +0200[diff] [blame]6834 if (unlikely(compressing)) {
6835 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
6836 compressing = 0;
6837 }
6838
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6839 txn->rsp.msg_state = HTTP_MSG_ERROR;
6840 /* don't send any error message as we're in the body */
6841 stream_int_retnclose(res->cons, NULL);
6842 res->analysers = 0;
6843 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6844
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6845 s->fe->fe_counters.cli_aborts++;
6846 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6847 if (objt_server(s->target))
6848 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6849
6850 if (!(s->flags & SN_ERR_MASK))
6851 s->flags |= SN_ERR_CLICL;
6852 if (!(s->flags & SN_FINST_MASK))
6853 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6854 return 0;
6855}
6856
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6857/* Iterate the same filter through all request headers.
6858 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6859 * Since it can manage the switch to another backend, it updates the per-proxy
6860 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6861 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6862int 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]6863{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6864 char *cur_ptr, *cur_end, *cur_next;
6865 int cur_idx, old_idx, last_hdr;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6866 struct http_txn *txn = &s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6867 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6868 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6869
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6870 last_hdr = 0;
6871
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6872 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6873 old_idx = 0;
6874
6875 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6876 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6877 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6878 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6879 (exp->action == ACT_ALLOW ||
6880 exp->action == ACT_DENY ||
6881 exp->action == ACT_TARPIT))
6882 return 0;
6883
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6884 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6885 if (!cur_idx)
6886 break;
6887
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6888 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6889 cur_ptr = cur_next;
6890 cur_end = cur_ptr + cur_hdr->len;
6891 cur_next = cur_end + cur_hdr->cr + 1;
6892
6893 /* Now we have one header between cur_ptr and cur_end,
6894 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6895 */
6896
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]6897 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]6898 switch (exp->action) {
6899 case ACT_SETBE:
6900 /* It is not possible to jump a second time.
6901 * FIXME: should we return an HTTP/500 here so that
6902 * the admin knows there's a problem ?
6903 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6904 if (s->be != s->fe)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6905 break;
6906
6907 /* Swithing Proxy */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6908 session_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6909 last_hdr = 1;
6910 break;
6911
6912 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6913 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6914 last_hdr = 1;
6915 break;
6916
6917 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6918 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6919 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6920 break;
6921
6922 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6923 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6924 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6925 break;
6926
6927 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]6928 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
6929 if (trash.len < 0)
6930 return -1;
6931
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6932 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6933 /* FIXME: if the user adds a newline in the replacement, the
6934 * index will not be recalculated for now, and the new line
6935 * will not be counted as a new header.
6936 */
6937
6938 cur_end += delta;
6939 cur_next += delta;
6940 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6941 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6942 break;
6943
6944 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6945 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6946 cur_next += delta;
6947
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6948 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6949 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6950 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6951 cur_hdr->len = 0;
6952 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6953 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6954 break;
6955
6956 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6957 }
6958
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6959 /* keep the link from this header to next one in case of later
6960 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6961 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6962 old_idx = cur_idx;
6963 }
6964 return 0;
6965}
6966
6967
6968/* Apply the filter to the request line.
6969 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6970 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6971 * Since it can manage the switch to another backend, it updates the per-proxy
6972 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6973 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6974int 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]6975{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6976 char *cur_ptr, *cur_end;
6977 int done;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6978 struct http_txn *txn = &s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6979 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6980
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6981 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6982 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6983 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6984 (exp->action == ACT_ALLOW ||
6985 exp->action == ACT_DENY ||
6986 exp->action == ACT_TARPIT))
6987 return 0;
6988 else if (exp->action == ACT_REMOVE)
6989 return 0;
6990
6991 done = 0;
6992
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6993 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6994 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6995
6996 /* Now we have the request line between cur_ptr and cur_end */
6997
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]6998 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]6999 switch (exp->action) {
7000 case ACT_SETBE:
7001 /* It is not possible to jump a second time.
7002 * FIXME: should we return an HTTP/500 here so that
7003 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7004 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7005 if (s->be != s->fe)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7006 break;
7007
7008 /* Swithing Proxy */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7009 session_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7010 done = 1;
7011 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7012
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7013 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7014 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7015 done = 1;
7016 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7017
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7018 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7019 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7020 done = 1;
7021 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7022
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7023 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7024 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7025 done = 1;
7026 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7027
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7028 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7029 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7030 if (trash.len < 0)
7031 return -1;
7032
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7033 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7034 /* FIXME: if the user adds a newline in the replacement, the
7035 * index will not be recalculated for now, and the new line
7036 * will not be counted as a new header.
7037 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7038
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7039 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7040 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7041 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7042 HTTP_MSG_RQMETH,
7043 cur_ptr, cur_end + 1,
7044 NULL, NULL);
7045 if (unlikely(!cur_end))
7046 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7047
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7048 /* we have a full request and we know that we have either a CR
7049 * or an LF at <ptr>.
7050 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7051 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7052 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]7053 /* there is no point trying this regex on headers */
7054 return 1;
7055 }
7056 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7057 return done;
7058}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7059
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7060
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7061
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7062/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7063 * 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]7064 * 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]7065 * unparsable request. Since it can manage the switch to another backend, it
7066 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7067 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7068int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7069{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7070 struct http_txn *txn = &s->txn;
7071 struct hdr_exp *exp;
7072
7073 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7074 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7075
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7076 /*
7077 * The interleaving of transformations and verdicts
7078 * makes it difficult to decide to continue or stop
7079 * the evaluation.
7080 */
7081
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7082 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7083 break;
7084
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7085 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7086 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7087 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7088 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7089
7090 /* if this filter had a condition, evaluate it now and skip to
7091 * next filter if the condition does not match.
7092 */
7093 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7094 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]7095 ret = acl_pass(ret);
7096 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7097 ret = !ret;
7098
7099 if (!ret)
7100 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7101 }
7102
7103 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7104 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7105 if (unlikely(ret < 0))
7106 return -1;
7107
7108 if (likely(ret == 0)) {
7109 /* The filter did not match the request, it can be
7110 * iterated through all headers.
7111 */
Willy Tarreaua256fae2015-01-30 20:58:58 +0100[diff] [blame]7112 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7113 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7114 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7115 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7116 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7117}
7118
7119
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7120
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7121/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7122 * Try to retrieve the server associated to the appsession.
7123 * If the server is found, it's assigned to the session.
7124 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7125void manage_client_side_appsession(struct session *s, const char *buf, int len) {
7126 struct http_txn *txn = &s->txn;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7127 appsess *asession = NULL;
7128 char *sessid_temp = NULL;
7129
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7130 if (len > s->be->appsession_len) {
7131 len = s->be->appsession_len;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7132 }
7133
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7134 if (s->be->options2 & PR_O2_AS_REQL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7135 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7136 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7137 /* 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]7138 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7139 }
7140
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7141 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7142 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7143 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]7144 return;
7145 }
7146
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7147 memcpy(txn->sessid, buf, len);
7148 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7149 }
7150
7151 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
7152 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7153 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]7154 return;
7155 }
7156
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7157 memcpy(sessid_temp, buf, len);
7158 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7159
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7160 asession = appsession_hash_lookup(&(s->be->htbl_proxy), sessid_temp);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7161 /* free previously allocated memory */
7162 pool_free2(apools.sessid, sessid_temp);
7163
7164 if (asession != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7165 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
7166 if (!(s->be->options2 & PR_O2_AS_REQL))
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7167 asession->request_count++;
7168
7169 if (asession->serverid != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7170 struct server *srv = s->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7171
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7172 while (srv) {
7173 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7174 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7175 (s->be->options & PR_O_PERSIST) ||
7176 (s->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7177 /* we found the server and it's usable */
7178 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7179 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7180 s->flags |= SN_DIRECT | SN_ASSIGNED;
7181 s->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]7182
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7183 break;
7184 } else {
7185 txn->flags &= ~TX_CK_MASK;
7186 txn->flags |= TX_CK_DOWN;
7187 }
7188 }
7189 srv = srv->next;
7190 }
7191 }
7192 }
7193}
7194
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7195/* Find the end of a cookie value contained between <s> and <e>. It works the
7196 * same way as with headers above except that the semi-colon also ends a token.
7197 * See RFC2965 for more information. Note that it requires a valid header to
7198 * return a valid result.
7199 */
7200char *find_cookie_value_end(char *s, const char *e)
7201{
7202 int quoted, qdpair;
7203
7204 quoted = qdpair = 0;
7205 for (; s < e; s++) {
7206 if (qdpair) qdpair = 0;
7207 else if (quoted) {
7208 if (*s == '\\') qdpair = 1;
7209 else if (*s == '"') quoted = 0;
7210 }
7211 else if (*s == '"') quoted = 1;
7212 else if (*s == ',' || *s == ';') return s;
7213 }
7214 return s;
7215}
7216
7217/* Delete a value in a header between delimiters <from> and <next> in buffer
7218 * <buf>. The number of characters displaced is returned, and the pointer to
7219 * the first delimiter is updated if required. The function tries as much as
7220 * possible to respect the following principles :
7221 * - replace <from> delimiter by the <next> one unless <from> points to a
7222 * colon, in which case <next> is simply removed
7223 * - set exactly one space character after the new first delimiter, unless
7224 * there are not enough characters in the block being moved to do so.
7225 * - remove unneeded spaces before the previous delimiter and after the new
7226 * one.
7227 *
7228 * It is the caller's responsibility to ensure that :
7229 * - <from> points to a valid delimiter or the colon ;
7230 * - <next> points to a valid delimiter or the final CR/LF ;
7231 * - there are non-space chars before <from> ;
7232 * - there is a CR/LF at or after <next>.
7233 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7234int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7235{
7236 char *prev = *from;
7237
7238 if (*prev == ':') {
7239 /* We're removing the first value, preserve the colon and add a
7240 * space if possible.
7241 */
7242 if (!http_is_crlf[(unsigned char)*next])
7243 next++;
7244 prev++;
7245 if (prev < next)
7246 *prev++ = ' ';
7247
7248 while (http_is_spht[(unsigned char)*next])
7249 next++;
7250 } else {
7251 /* Remove useless spaces before the old delimiter. */
7252 while (http_is_spht[(unsigned char)*(prev-1)])
7253 prev--;
7254 *from = prev;
7255
7256 /* copy the delimiter and if possible a space if we're
7257 * not at the end of the line.
7258 */
7259 if (!http_is_crlf[(unsigned char)*next]) {
7260 *prev++ = *next++;
7261 if (prev + 1 < next)
7262 *prev++ = ' ';
7263 while (http_is_spht[(unsigned char)*next])
7264 next++;
7265 }
7266 }
7267 return buffer_replace2(buf, prev, next, NULL, 0);
7268}
7269
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7270/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7271 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7272 * desirable to call it only when needed. This code is quite complex because
7273 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7274 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7275 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7276void manage_client_side_cookies(struct session *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7277{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7278 struct http_txn *txn = &s->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7279 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7280 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7281 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7282 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7283
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7284 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7285 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7286 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7287
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7288 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7289 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7290 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7291
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7292 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7293 hdr_beg = hdr_next;
7294 hdr_end = hdr_beg + cur_hdr->len;
7295 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7296
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7297 /* We have one full header between hdr_beg and hdr_end, and the
7298 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7299 * "Cookie:" headers.
7300 */
7301
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7302 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7303 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7304 old_idx = cur_idx;
7305 continue;
7306 }
7307
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7308 del_from = NULL; /* nothing to be deleted */
7309 preserve_hdr = 0; /* assume we may kill the whole header */
7310
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7311 /* Now look for cookies. Conforming to RFC2109, we have to support
7312 * attributes whose name begin with a '$', and associate them with
7313 * the right cookie, if we want to delete this cookie.
7314 * So there are 3 cases for each cookie read :
7315 * 1) it's a special attribute, beginning with a '$' : ignore it.
7316 * 2) it's a server id cookie that we *MAY* want to delete : save
7317 * some pointers on it (last semi-colon, beginning of cookie...)
7318 * 3) it's an application cookie : we *MAY* have to delete a previous
7319 * "special" cookie.
7320 * At the end of loop, if a "special" cookie remains, we may have to
7321 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7322 * *MUST* delete it.
7323 *
7324 * Note: RFC2965 is unclear about the processing of spaces around
7325 * the equal sign in the ATTR=VALUE form. A careful inspection of
7326 * the RFC explicitly allows spaces before it, and not within the
7327 * tokens (attrs or values). An inspection of RFC2109 allows that
7328 * too but section 10.1.3 lets one think that spaces may be allowed
7329 * after the equal sign too, resulting in some (rare) buggy
7330 * implementations trying to do that. So let's do what servers do.
7331 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7332 * allowed quoted strings in values, with any possible character
7333 * after a backslash, including control chars and delimitors, which
7334 * causes parsing to become ambiguous. Browsers also allow spaces
7335 * within values even without quotes.
7336 *
7337 * We have to keep multiple pointers in order to support cookie
7338 * removal at the beginning, middle or end of header without
7339 * corrupting the header. All of these headers are valid :
7340 *
7341 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7342 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7343 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7344 * | | | | | | | | |
7345 * | | | | | | | | hdr_end <--+
7346 * | | | | | | | +--> next
7347 * | | | | | | +----> val_end
7348 * | | | | | +-----------> val_beg
7349 * | | | | +--------------> equal
7350 * | | | +----------------> att_end
7351 * | | +---------------------> att_beg
7352 * | +--------------------------> prev
7353 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7354 */
7355
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7356 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7357 /* Iterate through all cookies on this line */
7358
7359 /* find att_beg */
7360 att_beg = prev + 1;
7361 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7362 att_beg++;
7363
7364 /* find att_end : this is the first character after the last non
7365 * space before the equal. It may be equal to hdr_end.
7366 */
7367 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7368
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7369 while (equal < hdr_end) {
7370 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7371 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7372 if (http_is_spht[(unsigned char)*equal++])
7373 continue;
7374 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7375 }
7376
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7377 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7378 * is between <att_beg> and <equal>, both may be identical.
7379 */
7380
7381 /* look for end of cookie if there is an equal sign */
7382 if (equal < hdr_end && *equal == '=') {
7383 /* look for the beginning of the value */
7384 val_beg = equal + 1;
7385 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7386 val_beg++;
7387
7388 /* find the end of the value, respecting quotes */
7389 next = find_cookie_value_end(val_beg, hdr_end);
7390
7391 /* make val_end point to the first white space or delimitor after the value */
7392 val_end = next;
7393 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7394 val_end--;
7395 } else {
7396 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7397 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7398
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7399 /* We have nothing to do with attributes beginning with '$'. However,
7400 * they will automatically be removed if a header before them is removed,
7401 * since they're supposed to be linked together.
7402 */
7403 if (*att_beg == '$')
7404 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7405
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7406 /* Ignore cookies with no equal sign */
7407 if (equal == next) {
7408 /* This is not our cookie, so we must preserve it. But if we already
7409 * scheduled another cookie for removal, we cannot remove the
7410 * complete header, but we can remove the previous block itself.
7411 */
7412 preserve_hdr = 1;
7413 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7414 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7415 val_end += delta;
7416 next += delta;
7417 hdr_end += delta;
7418 hdr_next += delta;
7419 cur_hdr->len += delta;
7420 http_msg_move_end(&txn->req, delta);
7421 prev = del_from;
7422 del_from = NULL;
7423 }
7424 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7425 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7426
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7427 /* if there are spaces around the equal sign, we need to
7428 * strip them otherwise we'll get trouble for cookie captures,
7429 * or even for rewrites. Since this happens extremely rarely,
7430 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7431 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7432 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7433 int stripped_before = 0;
7434 int stripped_after = 0;
7435
7436 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7437 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7438 equal += stripped_before;
7439 val_beg += stripped_before;
7440 }
7441
7442 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7443 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7444 val_beg += stripped_after;
7445 stripped_before += stripped_after;
7446 }
7447
7448 val_end += stripped_before;
7449 next += stripped_before;
7450 hdr_end += stripped_before;
7451 hdr_next += stripped_before;
7452 cur_hdr->len += stripped_before;
7453 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7454 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7455 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7456
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7457 /* First, let's see if we want to capture this cookie. We check
7458 * that we don't already have a client side cookie, because we
7459 * can only capture one. Also as an optimisation, we ignore
7460 * cookies shorter than the declared name.
7461 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7462 if (s->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7463 (val_end - att_beg >= s->fe->capture_namelen) &&
7464 memcmp(att_beg, s->fe->capture_name, s->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7465 int log_len = val_end - att_beg;
7466
7467 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7468 Alert("HTTP logging : out of memory.\n");
7469 } else {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7470 if (log_len > s->fe->capture_len)
7471 log_len = s->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7472 memcpy(txn->cli_cookie, att_beg, log_len);
7473 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7474 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7475 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7476
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7477 /* Persistence cookies in passive, rewrite or insert mode have the
7478 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7479 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7480 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7481 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7482 * For cookies in prefix mode, the form is :
7483 *
7484 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7485 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7486 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7487 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7488 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7489 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7490
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7491 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7492 * have the server ID between val_beg and delim, and the original cookie between
7493 * delim+1 and val_end. Otherwise, delim==val_end :
7494 *
7495 * Cookie: NAME=SRV; # in all but prefix modes
7496 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7497 * | || || | |+-> next
7498 * | || || | +--> val_end
7499 * | || || +---------> delim
7500 * | || |+------------> val_beg
7501 * | || +-------------> att_end = equal
7502 * | |+-----------------> att_beg
7503 * | +------------------> prev
7504 * +-------------------------> hdr_beg
7505 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7506
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7507 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7508 for (delim = val_beg; delim < val_end; delim++)
7509 if (*delim == COOKIE_DELIM)
7510 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7511 } else {
7512 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7513 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7514 /* Now check if the cookie contains a date field, which would
7515 * appear after a vertical bar ('|') just after the server name
7516 * and before the delimiter.
7517 */
7518 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7519 if (vbar1) {
7520 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7521 * right is the last seen date. It is a base64 encoded
7522 * 30-bit value representing the UNIX date since the
7523 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7524 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7525 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7526 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7527 if (val_end - vbar1 >= 5) {
7528 val = b64tos30(vbar1);
7529 if (val > 0)
7530 txn->cookie_last_date = val << 2;
7531 }
7532 /* look for a second vertical bar */
7533 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7534 if (vbar1 && (val_end - vbar1 > 5)) {
7535 val = b64tos30(vbar1 + 1);
7536 if (val > 0)
7537 txn->cookie_first_date = val << 2;
7538 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7539 }
7540 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7541
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7542 /* if the cookie has an expiration date and the proxy wants to check
7543 * it, then we do that now. We first check if the cookie is too old,
7544 * then only if it has expired. We detect strict overflow because the
7545 * time resolution here is not great (4 seconds). Cookies with dates
7546 * in the future are ignored if their offset is beyond one day. This
7547 * allows an admin to fix timezone issues without expiring everyone
7548 * and at the same time avoids keeping unwanted side effects for too
7549 * long.
7550 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7551 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7552 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7553 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7554 txn->flags &= ~TX_CK_MASK;
7555 txn->flags |= TX_CK_OLD;
7556 delim = val_beg; // let's pretend we have not found the cookie
7557 txn->cookie_first_date = 0;
7558 txn->cookie_last_date = 0;
7559 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7560 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7561 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7562 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7563 txn->flags &= ~TX_CK_MASK;
7564 txn->flags |= TX_CK_EXPIRED;
7565 delim = val_beg; // let's pretend we have not found the cookie
7566 txn->cookie_first_date = 0;
7567 txn->cookie_last_date = 0;
7568 }
7569
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7570 /* Here, we'll look for the first running server which supports the cookie.
7571 * This allows to share a same cookie between several servers, for example
7572 * to dedicate backup servers to specific servers only.
7573 * However, to prevent clients from sticking to cookie-less backup server
7574 * when they have incidentely learned an empty cookie, we simply ignore
7575 * empty cookies and mark them as invalid.
7576 * The same behaviour is applied when persistence must be ignored.
7577 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7578 if ((delim == val_beg) || (s->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7579 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7580
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7581 while (srv) {
7582 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7583 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7584 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7585 (s->be->options & PR_O_PERSIST) ||
7586 (s->flags & SN_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7587 /* we found the server and we can use it */
7588 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7589 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7590 s->flags |= SN_DIRECT | SN_ASSIGNED;
7591 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7592 break;
7593 } else {
7594 /* we found a server, but it's down,
7595 * mark it as such and go on in case
7596 * another one is available.
7597 */
7598 txn->flags &= ~TX_CK_MASK;
7599 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7600 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7601 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7602 srv = srv->next;
7603 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7604
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7605 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7606 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7607 txn->flags &= ~TX_CK_MASK;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7608 if ((s->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7609 txn->flags |= TX_CK_UNUSED;
7610 else
7611 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7612 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7613
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7614 /* depending on the cookie mode, we may have to either :
7615 * - delete the complete cookie if we're in insert+indirect mode, so that
7616 * the server never sees it ;
7617 * - remove the server id from the cookie value, and tag the cookie as an
7618 * application cookie so that it does not get accidentely removed later,
7619 * if we're in cookie prefix mode
7620 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7621 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7622 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7623
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7624 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7625 val_end += delta;
7626 next += delta;
7627 hdr_end += delta;
7628 hdr_next += delta;
7629 cur_hdr->len += delta;
7630 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7631
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7632 del_from = NULL;
7633 preserve_hdr = 1; /* we want to keep this cookie */
7634 }
7635 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7636 (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]7637 del_from = prev;
7638 }
7639 } else {
7640 /* This is not our cookie, so we must preserve it. But if we already
7641 * scheduled another cookie for removal, we cannot remove the
7642 * complete header, but we can remove the previous block itself.
7643 */
7644 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7645
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7646 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7647 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7648 if (att_beg >= del_from)
7649 att_beg += delta;
7650 if (att_end >= del_from)
7651 att_end += delta;
7652 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7653 val_end += delta;
7654 next += delta;
7655 hdr_end += delta;
7656 hdr_next += delta;
7657 cur_hdr->len += delta;
7658 http_msg_move_end(&txn->req, delta);
7659 prev = del_from;
7660 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7661 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7662 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7663
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7664 /* Look for the appsession cookie unless persistence must be ignored */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7665 if (!(s->flags & SN_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7666 int cmp_len, value_len;
7667 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7668
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7669 if (s->be->options2 & PR_O2_AS_PFX) {
7670 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
7671 value_begin = att_beg + s->be->appsession_name_len;
7672 value_len = val_end - att_beg - s->be->appsession_name_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7673 } else {
7674 cmp_len = att_end - att_beg;
7675 value_begin = val_beg;
7676 value_len = val_end - val_beg;
7677 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7678
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7679 /* let's see if the cookie is our appcookie */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7680 if (cmp_len == s->be->appsession_name_len &&
7681 memcmp(att_beg, s->be->appsession_name, cmp_len) == 0) {
7682 manage_client_side_appsession(s, value_begin, value_len);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7683 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7684 }
7685
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7686 /* continue with next cookie on this header line */
7687 att_beg = next;
7688 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7689
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7690 /* There are no more cookies on this line.
7691 * We may still have one (or several) marked for deletion at the
7692 * end of the line. We must do this now in two ways :
7693 * - if some cookies must be preserved, we only delete from the
7694 * mark to the end of line ;
7695 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7696 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7697 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7698 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7699 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7700 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7701 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7702 cur_hdr->len += delta;
7703 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7704 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7705
7706 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7707 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7708 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7709 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7710 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7711 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7712 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7713 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7714 }
7715
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7716 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7717 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7718 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7719}
7720
7721
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7722/* Iterate the same filter through all response headers contained in <rtr>.
7723 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7724 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7725int 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]7726{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7727 char *cur_ptr, *cur_end, *cur_next;
7728 int cur_idx, old_idx, last_hdr;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7729 struct http_txn *txn = &s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7730 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7731 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7732
7733 last_hdr = 0;
7734
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7735 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7736 old_idx = 0;
7737
7738 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7739 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7740 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7741 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7742 (exp->action == ACT_ALLOW ||
7743 exp->action == ACT_DENY))
7744 return 0;
7745
7746 cur_idx = txn->hdr_idx.v[old_idx].next;
7747 if (!cur_idx)
7748 break;
7749
7750 cur_hdr = &txn->hdr_idx.v[cur_idx];
7751 cur_ptr = cur_next;
7752 cur_end = cur_ptr + cur_hdr->len;
7753 cur_next = cur_end + cur_hdr->cr + 1;
7754
7755 /* Now we have one header between cur_ptr and cur_end,
7756 * and the next header starts at cur_next.
7757 */
7758
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]7759 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]7760 switch (exp->action) {
7761 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7762 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7763 last_hdr = 1;
7764 break;
7765
7766 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7767 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7768 last_hdr = 1;
7769 break;
7770
7771 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7772 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7773 if (trash.len < 0)
7774 return -1;
7775
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7776 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7777 /* FIXME: if the user adds a newline in the replacement, the
7778 * index will not be recalculated for now, and the new line
7779 * will not be counted as a new header.
7780 */
7781
7782 cur_end += delta;
7783 cur_next += delta;
7784 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7785 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7786 break;
7787
7788 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7789 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7790 cur_next += delta;
7791
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7792 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7793 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7794 txn->hdr_idx.used--;
7795 cur_hdr->len = 0;
7796 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7797 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7798 break;
7799
7800 }
7801 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7802
7803 /* keep the link from this header to next one in case of later
7804 * removal of next header.
7805 */
7806 old_idx = cur_idx;
7807 }
7808 return 0;
7809}
7810
7811
7812/* Apply the filter to the status line in the response buffer <rtr>.
7813 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7814 * or -1 if a replacement resulted in an invalid status line.
7815 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7816int 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]7817{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7818 char *cur_ptr, *cur_end;
7819 int done;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7820 struct http_txn *txn = &s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7821 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7822
7823
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7824 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7825 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7826 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7827 (exp->action == ACT_ALLOW ||
7828 exp->action == ACT_DENY))
7829 return 0;
7830 else if (exp->action == ACT_REMOVE)
7831 return 0;
7832
7833 done = 0;
7834
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7835 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7836 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7837
7838 /* Now we have the status line between cur_ptr and cur_end */
7839
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]7840 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]7841 switch (exp->action) {
7842 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7843 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7844 done = 1;
7845 break;
7846
7847 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7848 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7849 done = 1;
7850 break;
7851
7852 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7853 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7854 if (trash.len < 0)
7855 return -1;
7856
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7857 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7858 /* FIXME: if the user adds a newline in the replacement, the
7859 * index will not be recalculated for now, and the new line
7860 * will not be counted as a new header.
7861 */
7862
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7863 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7864 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7865 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7866 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7867 cur_ptr, cur_end + 1,
7868 NULL, NULL);
7869 if (unlikely(!cur_end))
7870 return -1;
7871
7872 /* we have a full respnse and we know that we have either a CR
7873 * or an LF at <ptr>.
7874 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7875 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]7876 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]7877 /* there is no point trying this regex on headers */
7878 return 1;
7879 }
7880 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7881 return done;
7882}
7883
7884
7885
7886/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7887 * 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]7888 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7889 * unparsable response.
7890 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7891int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7892{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7893 struct http_txn *txn = &s->txn;
7894 struct hdr_exp *exp;
7895
7896 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7897 int ret;
7898
7899 /*
7900 * The interleaving of transformations and verdicts
7901 * makes it difficult to decide to continue or stop
7902 * the evaluation.
7903 */
7904
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7905 if (txn->flags & TX_SVDENY)
7906 break;
7907
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7908 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7909 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7910 exp->action == ACT_PASS)) {
7911 exp = exp->next;
7912 continue;
7913 }
7914
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7915 /* if this filter had a condition, evaluate it now and skip to
7916 * next filter if the condition does not match.
7917 */
7918 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7919 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]7920 ret = acl_pass(ret);
7921 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7922 ret = !ret;
7923 if (!ret)
7924 continue;
7925 }
7926
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7927 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7928 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7929 if (unlikely(ret < 0))
7930 return -1;
7931
7932 if (likely(ret == 0)) {
7933 /* The filter did not match the response, it can be
7934 * iterated through all headers.
7935 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7936 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
7937 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7938 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7939 }
7940 return 0;
7941}
7942
7943
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7944/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7945 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7946 * desirable to call it only when needed. This function is also used when we
7947 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7948 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7949void manage_server_side_cookies(struct session *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7950{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7951 struct http_txn *txn = &s->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7952 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7953 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7954 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7955 char *hdr_beg, *hdr_end, *hdr_next;
7956 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7957
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7958 /* Iterate through the headers.
7959 * we start with the start line.
7960 */
7961 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7962 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7963
7964 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7965 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7966 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7967
7968 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7969 hdr_beg = hdr_next;
7970 hdr_end = hdr_beg + cur_hdr->len;
7971 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7972
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7973 /* We have one full header between hdr_beg and hdr_end, and the
7974 * next header starts at hdr_next. We're only interested in
7975 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7976 */
7977
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7978 is_cookie2 = 0;
7979 prev = hdr_beg + 10;
7980 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7981 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7982 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7983 if (!val) {
7984 old_idx = cur_idx;
7985 continue;
7986 }
7987 is_cookie2 = 1;
7988 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7989 }
7990
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7991 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7992 * <prev> points to the colon.
7993 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7994 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7995
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7996 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7997 * check-cache is enabled) and we are not interested in checking
7998 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7999 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8000 if (s->be->cookie_name == NULL &&
8001 s->be->appsession_name == NULL &&
8002 s->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8003 return;
8004
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8005 /* OK so now we know we have to process this response cookie.
8006 * The format of the Set-Cookie header is slightly different
8007 * from the format of the Cookie header in that it does not
8008 * support the comma as a cookie delimiter (thus the header
8009 * cannot be folded) because the Expires attribute described in
8010 * the original Netscape's spec may contain an unquoted date
8011 * with a comma inside. We have to live with this because
8012 * many browsers don't support Max-Age and some browsers don't
8013 * support quoted strings. However the Set-Cookie2 header is
8014 * clean.
8015 *
8016 * We have to keep multiple pointers in order to support cookie
8017 * removal at the beginning, middle or end of header without
8018 * corrupting the header (in case of set-cookie2). A special
8019 * pointer, <scav> points to the beginning of the set-cookie-av
8020 * fields after the first semi-colon. The <next> pointer points
8021 * either to the end of line (set-cookie) or next unquoted comma
8022 * (set-cookie2). All of these headers are valid :
8023 *
8024 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8025 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8026 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8027 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8028 * | | | | | | | | | |
8029 * | | | | | | | | +-> next hdr_end <--+
8030 * | | | | | | | +------------> scav
8031 * | | | | | | +--------------> val_end
8032 * | | | | | +--------------------> val_beg
8033 * | | | | +----------------------> equal
8034 * | | | +------------------------> att_end
8035 * | | +----------------------------> att_beg
8036 * | +------------------------------> prev
8037 * +-----------------------------------------> hdr_beg
8038 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8039
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8040 for (; prev < hdr_end; prev = next) {
8041 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8042
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8043 /* find att_beg */
8044 att_beg = prev + 1;
8045 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8046 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8047
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8048 /* find att_end : this is the first character after the last non
8049 * space before the equal. It may be equal to hdr_end.
8050 */
8051 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8052
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8053 while (equal < hdr_end) {
8054 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8055 break;
8056 if (http_is_spht[(unsigned char)*equal++])
8057 continue;
8058 att_end = equal;
8059 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8060
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8061 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8062 * is between <att_beg> and <equal>, both may be identical.
8063 */
8064
8065 /* look for end of cookie if there is an equal sign */
8066 if (equal < hdr_end && *equal == '=') {
8067 /* look for the beginning of the value */
8068 val_beg = equal + 1;
8069 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8070 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8071
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8072 /* find the end of the value, respecting quotes */
8073 next = find_cookie_value_end(val_beg, hdr_end);
8074
8075 /* make val_end point to the first white space or delimitor after the value */
8076 val_end = next;
8077 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8078 val_end--;
8079 } else {
8080 /* <equal> points to next comma, semi-colon or EOL */
8081 val_beg = val_end = next = equal;
8082 }
8083
8084 if (next < hdr_end) {
8085 /* Set-Cookie2 supports multiple cookies, and <next> points to
8086 * a colon or semi-colon before the end. So skip all attr-value
8087 * pairs and look for the next comma. For Set-Cookie, since
8088 * commas are permitted in values, skip to the end.
8089 */
8090 if (is_cookie2)
8091 next = find_hdr_value_end(next, hdr_end);
8092 else
8093 next = hdr_end;
8094 }
8095
8096 /* Now everything is as on the diagram above */
8097
8098 /* Ignore cookies with no equal sign */
8099 if (equal == val_end)
8100 continue;
8101
8102 /* If there are spaces around the equal sign, we need to
8103 * strip them otherwise we'll get trouble for cookie captures,
8104 * or even for rewrites. Since this happens extremely rarely,
8105 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8106 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8107 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8108 int stripped_before = 0;
8109 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8110
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8111 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8112 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8113 equal += stripped_before;
8114 val_beg += stripped_before;
8115 }
8116
8117 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8118 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8119 val_beg += stripped_after;
8120 stripped_before += stripped_after;
8121 }
8122
8123 val_end += stripped_before;
8124 next += stripped_before;
8125 hdr_end += stripped_before;
8126 hdr_next += stripped_before;
8127 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8128 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8129 }
8130
8131 /* First, let's see if we want to capture this cookie. We check
8132 * that we don't already have a server side cookie, because we
8133 * can only capture one. Also as an optimisation, we ignore
8134 * cookies shorter than the declared name.
8135 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8136 if (s->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8137 txn->srv_cookie == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8138 (val_end - att_beg >= s->fe->capture_namelen) &&
8139 memcmp(att_beg, s->fe->capture_name, s->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8140 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8141 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8142 Alert("HTTP logging : out of memory.\n");
8143 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8144 else {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8145 if (log_len > s->fe->capture_len)
8146 log_len = s->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8147 memcpy(txn->srv_cookie, att_beg, log_len);
8148 txn->srv_cookie[log_len] = 0;
8149 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8150 }
8151
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8152 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8153 /* now check if we need to process it for persistence */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8154 if (!(s->flags & SN_IGNORE_PRST) &&
8155 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8156 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8157 /* assume passive cookie by default */
8158 txn->flags &= ~TX_SCK_MASK;
8159 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8160
8161 /* If the cookie is in insert mode on a known server, we'll delete
8162 * this occurrence because we'll insert another one later.
8163 * 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]8164 * a direct access.
8165 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8166 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8167 /* The "preserve" flag was set, we don't want to touch the
8168 * server's cookie.
8169 */
8170 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8171 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
8172 ((s->flags & SN_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8173 /* this cookie must be deleted */
8174 if (*prev == ':' && next == hdr_end) {
8175 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8176 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8177 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8178 txn->hdr_idx.used--;
8179 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8180 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8181 hdr_next += delta;
8182 http_msg_move_end(&txn->rsp, delta);
8183 /* note: while both invalid now, <next> and <hdr_end>
8184 * are still equal, so the for() will stop as expected.
8185 */
8186 } else {
8187 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8188 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8189 next = prev;
8190 hdr_end += delta;
8191 hdr_next += delta;
8192 cur_hdr->len += delta;
8193 http_msg_move_end(&txn->rsp, delta);
8194 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8195 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8196 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8197 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8198 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8199 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8200 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8201 * with this server since we know it.
8202 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8203 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8204 next += delta;
8205 hdr_end += delta;
8206 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8207 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8208 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8209
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8210 txn->flags &= ~TX_SCK_MASK;
8211 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8212 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8213 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8214 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8215 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8216 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8217 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8218 next += delta;
8219 hdr_end += delta;
8220 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8221 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8222 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8223
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8224 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8225 txn->flags &= ~TX_SCK_MASK;
8226 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8227 }
8228 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]8229 /* 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]8230 else if (!(s->flags & SN_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8231 int cmp_len, value_len;
8232 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8233
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8234 if (s->be->options2 & PR_O2_AS_PFX) {
8235 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
8236 value_begin = att_beg + s->be->appsession_name_len;
8237 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]8238 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8239 cmp_len = att_end - att_beg;
8240 value_begin = val_beg;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8241 value_len = MIN(s->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8242 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8243
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8244 if ((cmp_len == s->be->appsession_name_len) &&
8245 (memcmp(att_beg, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8246 /* free a possibly previously allocated memory */
8247 pool_free2(apools.sessid, txn->sessid);
8248
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8249 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8250 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8251 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8252 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]8253 return;
8254 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8255 memcpy(txn->sessid, value_begin, value_len);
8256 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8257 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8258 }
8259 /* that's done for this cookie, check the next one on the same
8260 * line when next != hdr_end (only if is_cookie2).
8261 */
8262 }
8263 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8264 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8265 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8266
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8267 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8268 appsess *asession = NULL;
8269 /* only do insert, if lookup fails */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8270 asession = appsession_hash_lookup(&(s->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8271 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]8272 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8273 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
8274 Alert("Not enough Memory process_srv():asession:calloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8275 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8276 return;
8277 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8278 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
8279
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8280 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
8281 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8282 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8283 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8284 return;
8285 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8286 memcpy(asession->sessid, txn->sessid, s->be->appsession_len);
8287 asession->sessid[s->be->appsession_len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8288
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8289 server_id_len = strlen(objt_server(s->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8290 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8291 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8292 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8293 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8294 return;
8295 }
8296 asession->serverid[0] = '\0';
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8297 memcpy(asession->serverid, objt_server(s->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8298
8299 asession->request_count = 0;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8300 appsession_hash_insert(&(s->be->htbl_proxy), asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8301 }
8302
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8303 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8304 asession->request_count++;
8305 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8306}
8307
8308
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8309/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8310 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8311 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8312void check_response_for_cacheability(struct session *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8313{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8314 struct http_txn *txn = &s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8315 char *p1, *p2;
8316
8317 char *cur_ptr, *cur_end, *cur_next;
8318 int cur_idx;
8319
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8320 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8321 return;
8322
8323 /* Iterate through the headers.
8324 * we start with the start line.
8325 */
8326 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8327 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8328
8329 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8330 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8331 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8332
8333 cur_hdr = &txn->hdr_idx.v[cur_idx];
8334 cur_ptr = cur_next;
8335 cur_end = cur_ptr + cur_hdr->len;
8336 cur_next = cur_end + cur_hdr->cr + 1;
8337
8338 /* We have one full header between cur_ptr and cur_end, and the
8339 * next header starts at cur_next. We're only interested in
8340 * "Cookie:" headers.
8341 */
8342
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8343 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8344 if (val) {
8345 if ((cur_end - (cur_ptr + val) >= 8) &&
8346 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8347 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8348 return;
8349 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8350 }
8351
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8352 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8353 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8354 continue;
8355
8356 /* OK, right now we know we have a cache-control header at cur_ptr */
8357
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8358 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8359
8360 if (p1 >= cur_end) /* no more info */
8361 continue;
8362
8363 /* p1 is at the beginning of the value */
8364 p2 = p1;
8365
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8366 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8367 p2++;
8368
8369 /* we have a complete value between p1 and p2 */
8370 if (p2 < cur_end && *p2 == '=') {
8371 /* we have something of the form no-cache="set-cookie" */
8372 if ((cur_end - p1 >= 21) &&
8373 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8374 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8375 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8376 continue;
8377 }
8378
8379 /* OK, so we know that either p2 points to the end of string or to a comma */
8380 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8381 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8382 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8383 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8384 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8385 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8386 return;
8387 }
8388
8389 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8390 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8391 continue;
8392 }
8393 }
8394}
8395
8396
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8397/*
8398 * Try to retrieve a known appsession in the URI, then the associated server.
8399 * If the server is found, it's assigned to the session.
8400 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8401void get_srv_from_appsession(struct session *s, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8402{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8403 char *end_params, *first_param, *cur_param, *next_param;
8404 char separator;
8405 int value_len;
8406
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8407 int mode = s->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8408
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8409 if (s->be->appsession_name == NULL ||
8410 (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]8411 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8412 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8413
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8414 first_param = NULL;
8415 switch (mode) {
8416 case PR_O2_AS_M_PP:
8417 first_param = memchr(begin, ';', len);
8418 break;
8419 case PR_O2_AS_M_QS:
8420 first_param = memchr(begin, '?', len);
8421 break;
8422 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8423
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8424 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8425 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8426 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8427
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8428 switch (mode) {
8429 case PR_O2_AS_M_PP:
8430 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
8431 end_params = (char *) begin + len;
8432 }
8433 separator = ';';
8434 break;
8435 case PR_O2_AS_M_QS:
8436 end_params = (char *) begin + len;
8437 separator = '&';
8438 break;
8439 default:
8440 /* unknown mode, shouldn't happen */
8441 return;
8442 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8443
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8444 cur_param = next_param = end_params;
8445 while (cur_param > first_param) {
8446 cur_param--;
8447 if ((cur_param[0] == separator) || (cur_param == first_param)) {
8448 /* let's see if this is the appsession parameter */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8449 if ((cur_param + s->be->appsession_name_len + 1 < next_param) &&
8450 ((s->be->options2 & PR_O2_AS_PFX) || cur_param[s->be->appsession_name_len + 1] == '=') &&
8451 (strncasecmp(cur_param + 1, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8452 /* Cool... it's the right one */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8453 cur_param += s->be->appsession_name_len + (s->be->options2 & PR_O2_AS_PFX ? 1 : 2);
8454 value_len = MIN(s->be->appsession_len, next_param - cur_param);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8455 if (value_len > 0) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8456 manage_client_side_appsession(s, cur_param, value_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8457 }
8458 break;
8459 }
8460 next_param = cur_param;
8461 }
8462 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8463#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]8464 Alert("get_srv_from_appsession\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8465 appsession_hash_dump(&(s->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8466#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8467}
8468
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8469/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8470 * 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]8471 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8472 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8473 * 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]8474 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8475 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8476 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8477 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8478int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8479{
8480 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8481 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8482 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8483
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8484 if (!uri_auth)
8485 return 0;
8486
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8487 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]8488 return 0;
8489
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8490 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8491 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8492 return 0;
8493
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8494 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8495 return 0;
8496
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8497 return 1;
8498}
8499
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8500/*
8501 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8502 * By default it tries to report the error position as msg->err_pos. However if
8503 * this one is not set, it will then report msg->next, which is the last known
8504 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8505 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8506 */
8507void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8508 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8509 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8510{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8511 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8512 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8513
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8514 es->len = MIN(chn->buf->i, sizeof(es->buf));
8515 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8516 len1 = MIN(len1, es->len);
8517 len2 = es->len - len1; /* remaining data if buffer wraps */
8518
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8519 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8520 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8521 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8522
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8523 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8524 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8525 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8526 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8527
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8528 es->when = date; // user-visible date
8529 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8530 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8531 es->oe = other_end;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8532 if (objt_conn(s->req->prod->end))
8533 es->src = __objt_conn(s->req->prod->end)->addr.from;
8534 else
8535 memset(&es->src, 0, sizeof(es->src));
8536
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8537 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8538 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8539 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8540 es->s_flags = s->flags;
8541 es->t_flags = s->txn.flags;
8542 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8543 es->b_out = chn->buf->o;
8544 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8545 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8546 es->m_clen = msg->chunk_len;
8547 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8548}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8549
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8550/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8551 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8552 * performed over the whole headers. Otherwise it must contain a valid header
8553 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8554 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8555 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8556 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8557 * -1. The value fetch stops at commas, so this function is suited for use with
8558 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8559 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8560 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8561unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8562 struct hdr_idx *idx, int occ,
8563 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8564{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8565 struct hdr_ctx local_ctx;
8566 char *ptr_hist[MAX_HDR_HISTORY];
8567 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8568 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8569 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8570
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8571 if (!ctx) {
8572 local_ctx.idx = 0;
8573 ctx = &local_ctx;
8574 }
8575
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8576 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8577 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8578 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8579 occ--;
8580 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8581 *vptr = ctx->line + ctx->val;
8582 *vlen = ctx->vlen;
8583 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8584 }
8585 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8586 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8587 }
8588
8589 /* negative occurrence, we scan all the list then walk back */
8590 if (-occ > MAX_HDR_HISTORY)
8591 return 0;
8592
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8593 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8594 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8595 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8596 len_hist[hist_ptr] = ctx->vlen;
8597 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8598 hist_ptr = 0;
8599 found++;
8600 }
8601 if (-occ > found)
8602 return 0;
8603 /* 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]8604 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8605 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8606 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8607 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8608 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8609 if (hist_ptr >= MAX_HDR_HISTORY)
8610 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8611 *vptr = ptr_hist[hist_ptr];
8612 *vlen = len_hist[hist_ptr];
8613 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8614}
8615
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8616/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8617 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8618 * performed over the whole headers. Otherwise it must contain a valid header
8619 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8620 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8621 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8622 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8623 * -1. This function differs from http_get_hdr() in that it only returns full
8624 * line header values and does not stop at commas.
8625 * The return value is 0 if nothing was found, or non-zero otherwise.
8626 */
8627unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8628 struct hdr_idx *idx, int occ,
8629 struct hdr_ctx *ctx, char **vptr, int *vlen)
8630{
8631 struct hdr_ctx local_ctx;
8632 char *ptr_hist[MAX_HDR_HISTORY];
8633 int len_hist[MAX_HDR_HISTORY];
8634 unsigned int hist_ptr;
8635 int found;
8636
8637 if (!ctx) {
8638 local_ctx.idx = 0;
8639 ctx = &local_ctx;
8640 }
8641
8642 if (occ >= 0) {
8643 /* search from the beginning */
8644 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8645 occ--;
8646 if (occ <= 0) {
8647 *vptr = ctx->line + ctx->val;
8648 *vlen = ctx->vlen;
8649 return 1;
8650 }
8651 }
8652 return 0;
8653 }
8654
8655 /* negative occurrence, we scan all the list then walk back */
8656 if (-occ > MAX_HDR_HISTORY)
8657 return 0;
8658
8659 found = hist_ptr = 0;
8660 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8661 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8662 len_hist[hist_ptr] = ctx->vlen;
8663 if (++hist_ptr >= MAX_HDR_HISTORY)
8664 hist_ptr = 0;
8665 found++;
8666 }
8667 if (-occ > found)
8668 return 0;
8669 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8670 * find occurrence -occ, so we have to check [hist_ptr+occ].
8671 */
8672 hist_ptr += occ;
8673 if (hist_ptr >= MAX_HDR_HISTORY)
8674 hist_ptr -= MAX_HDR_HISTORY;
8675 *vptr = ptr_hist[hist_ptr];
8676 *vlen = len_hist[hist_ptr];
8677 return 1;
8678}
8679
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8680/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8681 * Print a debug line with a header. Always stop at the first CR or LF char,
8682 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8683 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8684 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8685void debug_hdr(const char *dir, struct session *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8686{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8687 int max;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8688 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8689 dir,
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8690 objt_conn(s->req->prod->end) ? (unsigned short)objt_conn(s->req->prod->end)->t.sock.fd : -1,
8691 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]8692
8693 for (max = 0; start + max < end; max++)
8694 if (start[max] == '\r' || start[max] == '\n')
8695 break;
8696
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8697 UBOUND(max, trash.size - trash.len - 3);
8698 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8699 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8700 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8701}
8702
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8703/*
8704 * Initialize a new HTTP transaction for session <s>. It is assumed that all
8705 * the required fields are properly allocated and that we only need to (re)init
8706 * them. This should be used before processing any new request.
8707 */
8708void http_init_txn(struct session *s)
8709{
8710 struct http_txn *txn = &s->txn;
8711 struct proxy *fe = s->fe;
8712
8713 txn->flags = 0;
8714 txn->status = -1;
8715
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8716 txn->cookie_first_date = 0;
8717 txn->cookie_last_date = 0;
8718
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8719 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8720 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8721 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8722 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8723 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8724 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8725 txn->req.chunk_len = 0LL;
8726 txn->req.body_len = 0LL;
8727 txn->rsp.chunk_len = 0LL;
8728 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8729 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8730 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8731 txn->req.chn = s->req;
8732 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8733
8734 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8735
8736 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8737 if (fe->options2 & PR_O2_REQBUG_OK)
8738 txn->req.err_pos = -1; /* let buggy requests pass */
8739
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8740 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8741 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8742
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8743 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8744 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8745
8746 if (txn->hdr_idx.v)
8747 hdr_idx_init(&txn->hdr_idx);
8748}
8749
8750/* to be used at the end of a transaction */
8751void http_end_txn(struct session *s)
8752{
8753 struct http_txn *txn = &s->txn;
8754
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]8755 /* release any possible compression context */
8756 if (s->flags & SN_COMP_READY)
8757 s->comp_algo->end(&s->comp_ctx);
8758 s->comp_algo = NULL;
8759 s->flags &= ~SN_COMP_READY;
8760
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8761 /* these ones will have been dynamically allocated */
8762 pool_free2(pool2_requri, txn->uri);
8763 pool_free2(pool2_capture, txn->cli_cookie);
8764 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8765 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8766 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8767
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8768 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8769 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8770 txn->uri = NULL;
8771 txn->srv_cookie = NULL;
8772 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8773
8774 if (txn->req.cap) {
8775 struct cap_hdr *h;
8776 for (h = s->fe->req_cap; h; h = h->next)
8777 pool_free2(h->pool, txn->req.cap[h->index]);
8778 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8779 }
8780
8781 if (txn->rsp.cap) {
8782 struct cap_hdr *h;
8783 for (h = s->fe->rsp_cap; h; h = h->next)
8784 pool_free2(h->pool, txn->rsp.cap[h->index]);
8785 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8786 }
8787
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8788}
8789
8790/* to be used at the end of a transaction to prepare a new one */
8791void http_reset_txn(struct session *s)
8792{
8793 http_end_txn(s);
8794 http_init_txn(s);
8795
8796 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8797 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8798 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8799 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8800 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8801 /* re-init store persistence */
8802 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8803 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8804
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8805 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8806
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8807 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8808
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8809 /* We must trim any excess data from the response buffer, because we
8810 * may have blocked an invalid response from a server that we don't
8811 * want to accidentely forward once we disable the analysers, nor do
8812 * we want those data to come along with next response. A typical
8813 * example of such data would be from a buggy server responding to
8814 * a HEAD with some data, or sending more than the advertised
8815 * content-length.
8816 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8817 if (unlikely(s->rep->buf->i))
8818 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8819
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8820 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8821 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8822
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8823 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8824 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8825
8826 s->req->rex = TICK_ETERNITY;
8827 s->req->wex = TICK_ETERNITY;
8828 s->req->analyse_exp = TICK_ETERNITY;
8829 s->rep->rex = TICK_ETERNITY;
8830 s->rep->wex = TICK_ETERNITY;
8831 s->rep->analyse_exp = TICK_ETERNITY;
8832}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8833
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8834void free_http_res_rules(struct list *r)
8835{
8836 struct http_res_rule *tr, *pr;
8837
8838 list_for_each_entry_safe(pr, tr, r, list) {
8839 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8840 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8841 free(pr);
8842 }
8843}
8844
8845void free_http_req_rules(struct list *r)
8846{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8847 struct http_req_rule *tr, *pr;
8848
8849 list_for_each_entry_safe(pr, tr, r, list) {
8850 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8851 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8852 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8853
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8854 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8855 free(pr);
8856 }
8857}
8858
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8859/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8860struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8861{
8862 struct http_req_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]8863 struct http_req_action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8864 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8865 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8866
8867 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8868 if (!rule) {
8869 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8870 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8871 }
8872
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8873 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8874 rule->action = HTTP_REQ_ACT_ALLOW;
8875 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]8876 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8877 rule->action = HTTP_REQ_ACT_DENY;
8878 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8879 } else if (!strcmp(args[0], "tarpit")) {
8880 rule->action = HTTP_REQ_ACT_TARPIT;
8881 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8882 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8883 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8884 cur_arg = 1;
8885
8886 while(*args[cur_arg]) {
8887 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8888 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8889 cur_arg+=2;
8890 continue;
8891 } else
8892 break;
8893 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8894 } else if (!strcmp(args[0], "set-nice")) {
8895 rule->action = HTTP_REQ_ACT_SET_NICE;
8896 cur_arg = 1;
8897
8898 if (!*args[cur_arg] ||
8899 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8900 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8901 file, linenum, args[0]);
8902 goto out_err;
8903 }
8904 rule->arg.nice = atoi(args[cur_arg]);
8905 if (rule->arg.nice < -1024)
8906 rule->arg.nice = -1024;
8907 else if (rule->arg.nice > 1024)
8908 rule->arg.nice = 1024;
8909 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8910 } else if (!strcmp(args[0], "set-tos")) {
8911#ifdef IP_TOS
8912 char *err;
8913 rule->action = HTTP_REQ_ACT_SET_TOS;
8914 cur_arg = 1;
8915
8916 if (!*args[cur_arg] ||
8917 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8918 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8919 file, linenum, args[0]);
8920 goto out_err;
8921 }
8922
8923 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8924 if (err && *err != '\0') {
8925 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8926 file, linenum, err, args[0]);
8927 goto out_err;
8928 }
8929 cur_arg++;
8930#else
8931 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8932 goto out_err;
8933#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8934 } else if (!strcmp(args[0], "set-mark")) {
8935#ifdef SO_MARK
8936 char *err;
8937 rule->action = HTTP_REQ_ACT_SET_MARK;
8938 cur_arg = 1;
8939
8940 if (!*args[cur_arg] ||
8941 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8942 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8943 file, linenum, args[0]);
8944 goto out_err;
8945 }
8946
8947 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8948 if (err && *err != '\0') {
8949 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8950 file, linenum, err, args[0]);
8951 goto out_err;
8952 }
8953 cur_arg++;
8954 global.last_checks |= LSTCHK_NETADM;
8955#else
8956 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8957 goto out_err;
8958#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8959 } else if (!strcmp(args[0], "set-log-level")) {
8960 rule->action = HTTP_REQ_ACT_SET_LOGL;
8961 cur_arg = 1;
8962
8963 if (!*args[cur_arg] ||
8964 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8965 bad_log_level:
8966 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8967 file, linenum, args[0]);
8968 goto out_err;
8969 }
8970 if (strcmp(args[cur_arg], "silent") == 0)
8971 rule->arg.loglevel = -1;
8972 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8973 goto bad_log_level;
8974 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8975 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8976 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8977 cur_arg = 1;
8978
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8979 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8980 (*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]8981 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8982 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8983 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8984 }
8985
8986 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8987 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8988 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8989
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8990 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8991 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]8992 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8993 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8994 free(proxy->conf.lfs_file);
8995 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8996 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8997 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]8998 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
8999 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]9000 cur_arg = 1;
9001
9002 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann8f249f42014-06-24 11:10:00 +0200[diff] [blame]9003 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9004 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9005 file, linenum, args[0]);
9006 goto out_err;
9007 }
9008
9009 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9010 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9011 LIST_INIT(&rule->arg.hdr_add.fmt);
9012
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9013 error = NULL;
9014 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9015 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9016 args[cur_arg + 1], error);
9017 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9018 goto out_err;
9019 }
9020
9021 proxy->conf.args.ctx = ARGC_HRQ;
9022 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9023 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9024 file, linenum);
9025
9026 free(proxy->conf.lfs_file);
9027 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9028 proxy->conf.lfs_line = proxy->conf.args.line;
9029 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9030 } else if (strcmp(args[0], "del-header") == 0) {
9031 rule->action = HTTP_REQ_ACT_DEL_HDR;
9032 cur_arg = 1;
9033
9034 if (!*args[cur_arg] ||
9035 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9036 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9037 file, linenum, args[0]);
9038 goto out_err;
9039 }
9040
9041 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9042 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9043
9044 proxy->conf.args.ctx = ARGC_HRQ;
9045 free(proxy->conf.lfs_file);
9046 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9047 proxy->conf.lfs_line = proxy->conf.args.line;
9048 cur_arg += 1;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9049 } else if (strcmp(args[0], "redirect") == 0) {
9050 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9051 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9052
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9053 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]9054 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9055 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9056 goto out_err;
9057 }
9058
9059 /* this redirect rule might already contain a parsed condition which
9060 * we'll pass to the http-request rule.
9061 */
9062 rule->action = HTTP_REQ_ACT_REDIR;
9063 rule->arg.redir = redir;
9064 rule->cond = redir->cond;
9065 redir->cond = NULL;
9066 cur_arg = 2;
9067 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9068 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9069 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9070 rule->action = HTTP_REQ_ACT_ADD_ACL;
9071 /*
9072 * '+ 8' for 'add-acl('
9073 * '- 9' for 'add-acl(' + trailing ')'
9074 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9075 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9076
9077 cur_arg = 1;
9078
9079 if (!*args[cur_arg] ||
9080 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9081 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9082 file, linenum, args[0]);
9083 goto out_err;
9084 }
9085
9086 LIST_INIT(&rule->arg.map.key);
9087 proxy->conf.args.ctx = ARGC_HRQ;
9088 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9089 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9090 file, linenum);
9091 free(proxy->conf.lfs_file);
9092 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9093 proxy->conf.lfs_line = proxy->conf.args.line;
9094 cur_arg += 1;
9095 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9096 /* http-request del-acl(<reference (acl name)>) <key pattern> */
9097 rule->action = HTTP_REQ_ACT_DEL_ACL;
9098 /*
9099 * '+ 8' for 'del-acl('
9100 * '- 9' for 'del-acl(' + trailing ')'
9101 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9102 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9103
9104 cur_arg = 1;
9105
9106 if (!*args[cur_arg] ||
9107 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9108 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9109 file, linenum, args[0]);
9110 goto out_err;
9111 }
9112
9113 LIST_INIT(&rule->arg.map.key);
9114 proxy->conf.args.ctx = ARGC_HRQ;
9115 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9116 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9117 file, linenum);
9118 free(proxy->conf.lfs_file);
9119 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9120 proxy->conf.lfs_line = proxy->conf.args.line;
9121 cur_arg += 1;
9122 } else if (strncmp(args[0], "del-map", 7) == 0) {
9123 /* http-request del-map(<reference (map name)>) <key pattern> */
9124 rule->action = HTTP_REQ_ACT_DEL_MAP;
9125 /*
9126 * '+ 8' for 'del-map('
9127 * '- 9' for 'del-map(' + trailing ')'
9128 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9129 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9130
9131 cur_arg = 1;
9132
9133 if (!*args[cur_arg] ||
9134 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9135 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9136 file, linenum, args[0]);
9137 goto out_err;
9138 }
9139
9140 LIST_INIT(&rule->arg.map.key);
9141 proxy->conf.args.ctx = ARGC_HRQ;
9142 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9143 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9144 file, linenum);
9145 free(proxy->conf.lfs_file);
9146 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9147 proxy->conf.lfs_line = proxy->conf.args.line;
9148 cur_arg += 1;
9149 } else if (strncmp(args[0], "set-map", 7) == 0) {
9150 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
9151 rule->action = HTTP_REQ_ACT_SET_MAP;
9152 /*
9153 * '+ 8' for 'set-map('
9154 * '- 9' for 'set-map(' + trailing ')'
9155 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9156 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9157
9158 cur_arg = 1;
9159
9160 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9161 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9162 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9163 file, linenum, args[0]);
9164 goto out_err;
9165 }
9166
9167 LIST_INIT(&rule->arg.map.key);
9168 LIST_INIT(&rule->arg.map.value);
9169 proxy->conf.args.ctx = ARGC_HRQ;
9170
9171 /* key pattern */
9172 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9173 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9174 file, linenum);
9175
9176 /* value pattern */
9177 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9178 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9179 file, linenum);
9180 free(proxy->conf.lfs_file);
9181 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9182 proxy->conf.lfs_line = proxy->conf.args.line;
9183
9184 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9185 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9186 char *errmsg = NULL;
9187 cur_arg = 1;
9188 /* try in the module list */
9189 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9190 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9191 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9192 free(errmsg);
9193 goto out_err;
9194 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9195 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9196 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]9197 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9198 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9199 }
9200
9201 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9202 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9203 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9204
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9205 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9206 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9207 file, linenum, args[0], errmsg);
9208 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9209 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9210 }
9211 rule->cond = cond;
9212 }
9213 else if (*args[cur_arg]) {
9214 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9215 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9216 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9217 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9218 }
9219
9220 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9221 out_err:
9222 free(rule);
9223 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9224}
9225
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9226/* parse an "http-respose" rule */
9227struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9228{
9229 struct http_res_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9230 struct http_res_action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9231 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9232 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9233
9234 rule = calloc(1, sizeof(*rule));
9235 if (!rule) {
9236 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9237 goto out_err;
9238 }
9239
9240 if (!strcmp(args[0], "allow")) {
9241 rule->action = HTTP_RES_ACT_ALLOW;
9242 cur_arg = 1;
9243 } else if (!strcmp(args[0], "deny")) {
9244 rule->action = HTTP_RES_ACT_DENY;
9245 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9246 } else if (!strcmp(args[0], "set-nice")) {
9247 rule->action = HTTP_RES_ACT_SET_NICE;
9248 cur_arg = 1;
9249
9250 if (!*args[cur_arg] ||
9251 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9252 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9253 file, linenum, args[0]);
9254 goto out_err;
9255 }
9256 rule->arg.nice = atoi(args[cur_arg]);
9257 if (rule->arg.nice < -1024)
9258 rule->arg.nice = -1024;
9259 else if (rule->arg.nice > 1024)
9260 rule->arg.nice = 1024;
9261 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9262 } else if (!strcmp(args[0], "set-tos")) {
9263#ifdef IP_TOS
9264 char *err;
9265 rule->action = HTTP_RES_ACT_SET_TOS;
9266 cur_arg = 1;
9267
9268 if (!*args[cur_arg] ||
9269 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9270 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9271 file, linenum, args[0]);
9272 goto out_err;
9273 }
9274
9275 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9276 if (err && *err != '\0') {
9277 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9278 file, linenum, err, args[0]);
9279 goto out_err;
9280 }
9281 cur_arg++;
9282#else
9283 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9284 goto out_err;
9285#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9286 } else if (!strcmp(args[0], "set-mark")) {
9287#ifdef SO_MARK
9288 char *err;
9289 rule->action = HTTP_RES_ACT_SET_MARK;
9290 cur_arg = 1;
9291
9292 if (!*args[cur_arg] ||
9293 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9294 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9295 file, linenum, args[0]);
9296 goto out_err;
9297 }
9298
9299 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9300 if (err && *err != '\0') {
9301 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9302 file, linenum, err, args[0]);
9303 goto out_err;
9304 }
9305 cur_arg++;
9306 global.last_checks |= LSTCHK_NETADM;
9307#else
9308 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9309 goto out_err;
9310#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9311 } else if (!strcmp(args[0], "set-log-level")) {
9312 rule->action = HTTP_RES_ACT_SET_LOGL;
9313 cur_arg = 1;
9314
9315 if (!*args[cur_arg] ||
9316 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9317 bad_log_level:
9318 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9319 file, linenum, args[0]);
9320 goto out_err;
9321 }
9322 if (strcmp(args[cur_arg], "silent") == 0)
9323 rule->arg.loglevel = -1;
9324 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9325 goto bad_log_level;
9326 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9327 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9328 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
9329 cur_arg = 1;
9330
9331 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9332 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9333 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9334 file, linenum, args[0]);
9335 goto out_err;
9336 }
9337
9338 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9339 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9340 LIST_INIT(&rule->arg.hdr_add.fmt);
9341
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9342 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9343 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]9344 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9345 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9346 free(proxy->conf.lfs_file);
9347 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9348 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9349 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9350 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9351 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]9352 cur_arg = 1;
9353
9354 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmanna772b942014-08-08 17:29:06 +0200[diff] [blame]9355 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9356 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9357 file, linenum, args[0]);
9358 goto out_err;
9359 }
9360
9361 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9362 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9363 LIST_INIT(&rule->arg.hdr_add.fmt);
9364
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9365 error = NULL;
9366 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9367 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9368 args[cur_arg + 1], error);
9369 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9370 goto out_err;
9371 }
9372
9373 proxy->conf.args.ctx = ARGC_HRQ;
9374 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9375 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9376 file, linenum);
9377
9378 free(proxy->conf.lfs_file);
9379 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9380 proxy->conf.lfs_line = proxy->conf.args.line;
9381 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9382 } else if (strcmp(args[0], "del-header") == 0) {
9383 rule->action = HTTP_RES_ACT_DEL_HDR;
9384 cur_arg = 1;
9385
9386 if (!*args[cur_arg] ||
9387 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9388 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9389 file, linenum, args[0]);
9390 goto out_err;
9391 }
9392
9393 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9394 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9395
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9396 proxy->conf.args.ctx = ARGC_HRS;
9397 free(proxy->conf.lfs_file);
9398 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9399 proxy->conf.lfs_line = proxy->conf.args.line;
9400 cur_arg += 1;
9401 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9402 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9403 rule->action = HTTP_RES_ACT_ADD_ACL;
9404 /*
9405 * '+ 8' for 'add-acl('
9406 * '- 9' for 'add-acl(' + trailing ')'
9407 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9408 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9409
9410 cur_arg = 1;
9411
9412 if (!*args[cur_arg] ||
9413 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9414 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9415 file, linenum, args[0]);
9416 goto out_err;
9417 }
9418
9419 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9420 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9421 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9422 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9423 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9424 free(proxy->conf.lfs_file);
9425 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9426 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9427
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9428 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9429 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9430 /* http-response del-acl(<reference (acl name)>) <key pattern> */
9431 rule->action = HTTP_RES_ACT_DEL_ACL;
9432 /*
9433 * '+ 8' for 'del-acl('
9434 * '- 9' for 'del-acl(' + trailing ')'
9435 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9436 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9437
9438 cur_arg = 1;
9439
9440 if (!*args[cur_arg] ||
9441 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9442 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9443 file, linenum, args[0]);
9444 goto out_err;
9445 }
9446
9447 LIST_INIT(&rule->arg.map.key);
9448 proxy->conf.args.ctx = ARGC_HRS;
9449 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9450 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9451 file, linenum);
9452 free(proxy->conf.lfs_file);
9453 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9454 proxy->conf.lfs_line = proxy->conf.args.line;
9455 cur_arg += 1;
9456 } else if (strncmp(args[0], "del-map", 7) == 0) {
9457 /* http-response del-map(<reference (map name)>) <key pattern> */
9458 rule->action = HTTP_RES_ACT_DEL_MAP;
9459 /*
9460 * '+ 8' for 'del-map('
9461 * '- 9' for 'del-map(' + trailing ')'
9462 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9463 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9464
9465 cur_arg = 1;
9466
9467 if (!*args[cur_arg] ||
9468 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9469 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9470 file, linenum, args[0]);
9471 goto out_err;
9472 }
9473
9474 LIST_INIT(&rule->arg.map.key);
9475 proxy->conf.args.ctx = ARGC_HRS;
9476 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9477 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9478 file, linenum);
9479 free(proxy->conf.lfs_file);
9480 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9481 proxy->conf.lfs_line = proxy->conf.args.line;
9482 cur_arg += 1;
9483 } else if (strncmp(args[0], "set-map", 7) == 0) {
9484 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
9485 rule->action = HTTP_RES_ACT_SET_MAP;
9486 /*
9487 * '+ 8' for 'set-map('
9488 * '- 9' for 'set-map(' + trailing ')'
9489 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9490 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9491
9492 cur_arg = 1;
9493
9494 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9495 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9496 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9497 file, linenum, args[0]);
9498 goto out_err;
9499 }
9500
9501 LIST_INIT(&rule->arg.map.key);
9502 LIST_INIT(&rule->arg.map.value);
9503
9504 proxy->conf.args.ctx = ARGC_HRS;
9505
9506 /* key pattern */
9507 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9508 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9509 file, linenum);
9510
9511 /* value pattern */
9512 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9513 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9514 file, linenum);
9515
9516 free(proxy->conf.lfs_file);
9517 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9518 proxy->conf.lfs_line = proxy->conf.args.line;
9519
9520 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9521 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9522 char *errmsg = NULL;
9523 cur_arg = 1;
9524 /* try in the module list */
9525 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9526 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9527 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9528 free(errmsg);
9529 goto out_err;
9530 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9531 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9532 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]9533 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
9534 goto out_err;
9535 }
9536
9537 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9538 struct acl_cond *cond;
9539 char *errmsg = NULL;
9540
9541 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9542 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9543 file, linenum, args[0], errmsg);
9544 free(errmsg);
9545 goto out_err;
9546 }
9547 rule->cond = cond;
9548 }
9549 else if (*args[cur_arg]) {
9550 Alert("parsing [%s:%d]: 'http-response %s' expects"
9551 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9552 file, linenum, args[0], args[cur_arg]);
9553 goto out_err;
9554 }
9555
9556 return rule;
9557 out_err:
9558 free(rule);
9559 return NULL;
9560}
9561
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9562/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9563 * with <err> filled with the error message. If <use_fmt> is not null, builds a
9564 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9565 */
9566struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9567 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9568{
9569 struct redirect_rule *rule;
9570 int cur_arg;
9571 int type = REDIRECT_TYPE_NONE;
9572 int code = 302;
9573 const char *destination = NULL;
9574 const char *cookie = NULL;
9575 int cookie_set = 0;
9576 unsigned int flags = REDIRECT_FLAG_NONE;
9577 struct acl_cond *cond = NULL;
9578
9579 cur_arg = 0;
9580 while (*(args[cur_arg])) {
9581 if (strcmp(args[cur_arg], "location") == 0) {
9582 if (!*args[cur_arg + 1])
9583 goto missing_arg;
9584
9585 type = REDIRECT_TYPE_LOCATION;
9586 cur_arg++;
9587 destination = args[cur_arg];
9588 }
9589 else if (strcmp(args[cur_arg], "prefix") == 0) {
9590 if (!*args[cur_arg + 1])
9591 goto missing_arg;
9592
9593 type = REDIRECT_TYPE_PREFIX;
9594 cur_arg++;
9595 destination = args[cur_arg];
9596 }
9597 else if (strcmp(args[cur_arg], "scheme") == 0) {
9598 if (!*args[cur_arg + 1])
9599 goto missing_arg;
9600
9601 type = REDIRECT_TYPE_SCHEME;
9602 cur_arg++;
9603 destination = args[cur_arg];
9604 }
9605 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9606 if (!*args[cur_arg + 1])
9607 goto missing_arg;
9608
9609 cur_arg++;
9610 cookie = args[cur_arg];
9611 cookie_set = 1;
9612 }
9613 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9614 if (!*args[cur_arg + 1])
9615 goto missing_arg;
9616
9617 cur_arg++;
9618 cookie = args[cur_arg];
9619 cookie_set = 0;
9620 }
9621 else if (strcmp(args[cur_arg], "code") == 0) {
9622 if (!*args[cur_arg + 1])
9623 goto missing_arg;
9624
9625 cur_arg++;
9626 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9627 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9628 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9629 "'%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]9630 args[cur_arg - 1], args[cur_arg]);
9631 return NULL;
9632 }
9633 }
9634 else if (!strcmp(args[cur_arg],"drop-query")) {
9635 flags |= REDIRECT_FLAG_DROP_QS;
9636 }
9637 else if (!strcmp(args[cur_arg],"append-slash")) {
9638 flags |= REDIRECT_FLAG_APPEND_SLASH;
9639 }
9640 else if (strcmp(args[cur_arg], "if") == 0 ||
9641 strcmp(args[cur_arg], "unless") == 0) {
9642 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9643 if (!cond) {
9644 memprintf(errmsg, "error in condition: %s", *errmsg);
9645 return NULL;
9646 }
9647 break;
9648 }
9649 else {
9650 memprintf(errmsg,
9651 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9652 args[cur_arg]);
9653 return NULL;
9654 }
9655 cur_arg++;
9656 }
9657
9658 if (type == REDIRECT_TYPE_NONE) {
9659 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9660 return NULL;
9661 }
9662
9663 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
9664 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9665 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9666
9667 if (!use_fmt) {
9668 /* old-style static redirect rule */
9669 rule->rdr_str = strdup(destination);
9670 rule->rdr_len = strlen(destination);
9671 }
9672 else {
9673 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9674
9675 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
9676 * if prefix == "/", we don't want to add anything, otherwise it
9677 * makes it hard for the user to configure a self-redirection.
9678 */
Godbach543b9782014-12-18 15:44:58 +0800[diff] [blame]9679 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9680 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9681 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]9682 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9683 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9684 free(curproxy->conf.lfs_file);
9685 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
9686 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9687 }
9688 }
9689
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9690 if (cookie) {
9691 /* depending on cookie_set, either we want to set the cookie, or to clear it.
9692 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
9693 */
9694 rule->cookie_len = strlen(cookie);
9695 if (cookie_set) {
9696 rule->cookie_str = malloc(rule->cookie_len + 10);
9697 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9698 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
9699 rule->cookie_len += 9;
9700 } else {
9701 rule->cookie_str = malloc(rule->cookie_len + 21);
9702 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9703 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
9704 rule->cookie_len += 20;
9705 }
9706 }
9707 rule->type = type;
9708 rule->code = code;
9709 rule->flags = flags;
9710 LIST_INIT(&rule->list);
9711 return rule;
9712
9713 missing_arg:
9714 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9715 return NULL;
9716}
9717
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9718/************************************************************************/
9719/* The code below is dedicated to ACL parsing and matching */
9720/************************************************************************/
9721
9722
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9723/* This function ensures that the prerequisites for an L7 fetch are ready,
9724 * which means that a request or response is ready. If some data is missing,
9725 * 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]9726 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9727 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9728 *
9729 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9730 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9731 * decide whether or not an HTTP message is present ;
9732 * 0 if the requested data cannot be fetched or if it is certain that
9733 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9734 * 1 if an HTTP message is ready
9735 */
9736static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9737smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9738 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9739{
9740 struct http_txn *txn = l7;
9741 struct http_msg *msg = &txn->req;
9742
9743 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9744 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9745 */
9746
9747 if (unlikely(!s || !txn))
9748 return 0;
9749
9750 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9751 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9752
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9753 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9754 if (unlikely(!s->req))
9755 return 0;
9756
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9757 /* If the buffer does not leave enough free space at the end,
9758 * we must first realign it.
9759 */
9760 if (s->req->buf->p > s->req->buf->data &&
9761 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
9762 buffer_slow_realign(s->req->buf);
9763
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9764 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9765 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9766 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9767
9768 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9769 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9770 http_msg_analyzer(msg, &txn->hdr_idx);
9771
9772 /* Still no valid request ? */
9773 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9774 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9775 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9776 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9777 }
9778 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9779 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9780 return 0;
9781 }
9782
9783 /* OK we just got a valid HTTP request. We have some minor
9784 * preparation to perform so that further checks can rely
9785 * on HTTP tests.
9786 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9787
9788 /* If the request was parsed but was too large, we must absolutely
9789 * return an error so that it is not processed. At the moment this
9790 * cannot happen, but if the parsers are to change in the future,
9791 * we want this check to be maintained.
9792 */
9793 if (unlikely(s->req->buf->i + s->req->buf->p >
9794 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
9795 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9796 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9797 return 1;
9798 }
9799
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9800 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9801 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
9802 s->flags |= SN_REDIRECTABLE;
9803
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9804 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
9805 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9806 }
9807
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9808 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9809 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9810 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9811
9812 /* otherwise everything's ready for the request */
9813 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9814 else {
9815 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9816 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
9817 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9818 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9819 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9820 }
9821
9822 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9823 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9824 return 1;
9825}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9826
Willy Tarreaua4ba9db2014-06-25 16:56:41 +0200[diff] [blame]9827/* Note: these functinos *do* modify the sample. Even in case of success, at
9828 * least the type and uint value are modified.
9829 */
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9830#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9831 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]9832
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9833#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9834 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]9835
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9836
9837/* 1. Check on METHOD
9838 * We use the pre-parsed method if it is known, and store its number as an
9839 * integer. If it is unknown, we use the pointer and the length.
9840 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9841static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9842{
9843 int len, meth;
9844
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]9845 len = strlen(text);
9846 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9847
9848 pattern->val.i = meth;
9849 if (meth == HTTP_METH_OTHER) {
Willy Tarreau71196f32014-08-29 15:15:50 +0200[diff] [blame]9850 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9851 pattern->len = len;
9852 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9853 else {
9854 pattern->ptr.str = NULL;
9855 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9856 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9857 return 1;
9858}
9859
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9860/* This function fetches the method of current HTTP request and stores
9861 * it in the global pattern struct as a chunk. There are two possibilities :
9862 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
9863 * in <len> and <ptr> is NULL ;
9864 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
9865 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9866 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9867 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9868static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9869smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9870 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9871{
9872 int meth;
9873 struct http_txn *txn = l7;
9874
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9875 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9876
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9877 meth = txn->meth;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9878 smp->type = SMP_T_METH;
9879 smp->data.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9880 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9881 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
9882 /* ensure the indexes are not affected */
9883 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9884 smp->flags |= SMP_F_CONST;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9885 smp->data.meth.str.len = txn->req.sl.rq.m_l;
9886 smp->data.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9887 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9888 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9889 return 1;
9890}
9891
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9892/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9893static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9894{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9895 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9896 struct pattern_list *lst;
9897 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9898
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9899 list_for_each_entry(lst, &expr->patterns, list) {
9900 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9901
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9902 /* well-known method */
9903 if (pattern->val.i != HTTP_METH_OTHER) {
9904 if (smp->data.meth.meth == pattern->val.i)
9905 return pattern;
9906 else
9907 continue;
9908 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9909
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9910 /* Other method, we must compare the strings */
9911 if (pattern->len != smp->data.meth.str.len)
9912 continue;
9913
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9914 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Willy Tarreauc62a0c62014-08-28 20:42:57 +0200[diff] [blame]9915 if ((icase && strncasecmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0) ||
9916 (!icase && strncmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0))
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9917 return pattern;
9918 }
9919 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9920}
9921
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9922static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9923smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9924 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9925{
9926 struct http_txn *txn = l7;
9927 char *ptr;
9928 int len;
9929
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9930 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9931
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9932 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9933 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9934
9935 while ((len-- > 0) && (*ptr++ != '/'));
9936 if (len <= 0)
9937 return 0;
9938
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9939 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9940 smp->data.str.str = ptr;
9941 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9942
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9943 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9944 return 1;
9945}
9946
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9947static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9948smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9949 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9950{
9951 struct http_txn *txn = l7;
9952 char *ptr;
9953 int len;
9954
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9955 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9956
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9957 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9958 return 0;
9959
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9960 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9961 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9962
9963 while ((len-- > 0) && (*ptr++ != '/'));
9964 if (len <= 0)
9965 return 0;
9966
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9967 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9968 smp->data.str.str = ptr;
9969 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9970
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9971 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9972 return 1;
9973}
9974
9975/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9976static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9977smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9978 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9979{
9980 struct http_txn *txn = l7;
9981 char *ptr;
9982 int len;
9983
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9984 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9985
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9986 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9987 return 0;
9988
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9989 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9990 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9991
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9992 smp->type = SMP_T_UINT;
9993 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9994 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9995 return 1;
9996}
9997
9998/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9999static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10000smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10001 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10002{
10003 struct http_txn *txn = l7;
10004
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10005 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10006
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10007 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10008 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10009 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10010 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10011 return 1;
10012}
10013
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10014static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10015smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10016 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10017{
10018 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10019 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10020
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10021 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10022
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10023 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]10024 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10025 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10026
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10027 smp->type = SMP_T_IPV4;
10028 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10029 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10030 return 1;
10031}
10032
10033static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10034smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10035 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10036{
10037 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10038 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10039
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10040 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10041
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10042 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]10043 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10044 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10045
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10046 smp->type = SMP_T_UINT;
10047 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10048 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10049 return 1;
10050}
10051
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10052/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10053 * Accepts an optional argument of type string containing the header field name,
10054 * and an optional argument of type signed or unsigned integer to request an
10055 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10056 * headers are considered from the first one. It does not stop on commas and
10057 * returns full lines instead (useful for User-Agent or Date for example).
10058 */
10059static int
10060smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10061 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10062{
10063 struct http_txn *txn = l7;
10064 struct hdr_idx *idx = &txn->hdr_idx;
10065 struct hdr_ctx *ctx = smp->ctx.a[0];
10066 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
10067 int occ = 0;
10068 const char *name_str = NULL;
10069 int name_len = 0;
10070
10071 if (!ctx) {
10072 /* first call */
10073 ctx = &static_hdr_ctx;
10074 ctx->idx = 0;
10075 smp->ctx.a[0] = ctx;
10076 }
10077
10078 if (args) {
10079 if (args[0].type != ARGT_STR)
10080 return 0;
10081 name_str = args[0].data.str.str;
10082 name_len = args[0].data.str.len;
10083
10084 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10085 occ = args[1].data.uint;
10086 }
10087
10088 CHECK_HTTP_MESSAGE_FIRST();
10089
10090 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10091 /* search for header from the beginning */
10092 ctx->idx = 0;
10093
10094 if (!occ && !(opt & SMP_OPT_ITERATE))
10095 /* no explicit occurrence and single fetch => last header by default */
10096 occ = -1;
10097
10098 if (!occ)
10099 /* prepare to report multiple occurrences for ACL fetches */
10100 smp->flags |= SMP_F_NOT_LAST;
10101
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10102 smp->type = SMP_T_STR;
10103 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10104 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
10105 return 1;
10106
10107 smp->flags &= ~SMP_F_NOT_LAST;
10108 return 0;
10109}
10110
10111/* 6. Check on HTTP header count. The number of occurrences is returned.
10112 * Accepts exactly 1 argument of type string. It does not stop on commas and
10113 * returns full lines instead (useful for User-Agent or Date for example).
10114 */
10115static int
10116smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10117 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10118{
10119 struct http_txn *txn = l7;
10120 struct hdr_idx *idx = &txn->hdr_idx;
10121 struct hdr_ctx ctx;
10122 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
10123 int cnt;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10124 const char *name = NULL;
10125 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10126
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10127 if (args && args->type == ARGT_STR) {
10128 name = args->data.str.str;
10129 len = args->data.str.len;
10130 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10131
10132 CHECK_HTTP_MESSAGE_FIRST();
10133
10134 ctx.idx = 0;
10135 cnt = 0;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10136 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10137 cnt++;
10138
10139 smp->type = SMP_T_UINT;
10140 smp->data.uint = cnt;
10141 smp->flags = SMP_F_VOL_HDR;
10142 return 1;
10143}
10144
10145/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10146 * Accepts an optional argument of type string containing the header field name,
10147 * and an optional argument of type signed or unsigned integer to request an
10148 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10149 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10150 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10151static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10152smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10153 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10154{
10155 struct http_txn *txn = l7;
10156 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10157 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10158 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]10159 int occ = 0;
10160 const char *name_str = NULL;
10161 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10162
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10163 if (!ctx) {
10164 /* first call */
10165 ctx = &static_hdr_ctx;
10166 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10167 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10168 }
10169
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10170 if (args) {
10171 if (args[0].type != ARGT_STR)
10172 return 0;
10173 name_str = args[0].data.str.str;
10174 name_len = args[0].data.str.len;
10175
10176 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10177 occ = args[1].data.uint;
10178 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10179
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10180 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10181
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10182 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10183 /* search for header from the beginning */
10184 ctx->idx = 0;
10185
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10186 if (!occ && !(opt & SMP_OPT_ITERATE))
10187 /* no explicit occurrence and single fetch => last header by default */
10188 occ = -1;
10189
10190 if (!occ)
10191 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10192 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10193
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10194 smp->type = SMP_T_STR;
10195 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10196 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]10197 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10198
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10199 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10200 return 0;
10201}
10202
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10203/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10204 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10205 */
10206static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10207smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10208 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10209{
10210 struct http_txn *txn = l7;
10211 struct hdr_idx *idx = &txn->hdr_idx;
10212 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10213 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]10214 int cnt;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10215 const char *name = NULL;
10216 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10217
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10218 if (args && args->type == ARGT_STR) {
10219 name = args->data.str.str;
10220 len = args->data.str.len;
10221 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10222
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10223 CHECK_HTTP_MESSAGE_FIRST();
10224
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10225 ctx.idx = 0;
10226 cnt = 0;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10227 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10228 cnt++;
10229
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10230 smp->type = SMP_T_UINT;
10231 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10232 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10233 return 1;
10234}
10235
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10236/* Fetch an HTTP header's integer value. The integer value is returned. It
10237 * takes a mandatory argument of type string and an optional one of type int
10238 * to designate a specific occurrence. It returns an unsigned integer, which
10239 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10240 */
10241static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10242smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10243 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10244{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10245 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10246
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10247 if (ret > 0) {
10248 smp->type = SMP_T_UINT;
10249 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10250 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10251
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10252 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10253}
10254
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10255/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10256 * and an optional one of type int to designate a specific occurrence.
10257 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10258 */
10259static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10260smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10261 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10262{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10263 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10264
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10265 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10266 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
10267 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10268 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10269 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10270 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10271 if (smp->data.str.len < temp->size - 1) {
10272 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
10273 temp->str[smp->data.str.len] = '\0';
10274 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
10275 smp->type = SMP_T_IPV6;
10276 break;
10277 }
10278 }
10279 }
10280
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10281 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10282 if (!(smp->flags & SMP_F_NOT_LAST))
10283 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10284 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10285 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10286}
10287
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10288/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10289 * the first '/' after the possible hostname, and ends before the possible '?'.
10290 */
10291static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10292smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10293 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10294{
10295 struct http_txn *txn = l7;
10296 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10297
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10298 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10299
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10300 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]10301 ptr = http_get_path(txn);
10302 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10303 return 0;
10304
10305 /* OK, we got the '/' ! */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10306 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10307 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10308
10309 while (ptr < end && *ptr != '?')
10310 ptr++;
10311
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10312 smp->data.str.len = ptr - smp->data.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10313 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10314 return 1;
10315}
10316
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10317/* This produces a concatenation of the first occurrence of the Host header
10318 * followed by the path component if it begins with a slash ('/'). This means
10319 * that '*' will not be added, resulting in exactly the first Host entry.
10320 * If no Host header is found, then the path is returned as-is. The returned
10321 * 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]10322 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10323 */
10324static int
10325smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10326 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10327{
10328 struct http_txn *txn = l7;
10329 char *ptr, *end, *beg;
10330 struct hdr_ctx ctx;
Willy Tarreauc1fbbd42014-06-24 17:27:02 +0200[diff] [blame]10331 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10332
10333 CHECK_HTTP_MESSAGE_FIRST();
10334
10335 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10336 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]10337 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10338
10339 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
Willy Tarreauc1fbbd42014-06-24 17:27:02 +0200[diff] [blame]10340 temp = get_trash_chunk();
10341 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10342 smp->type = SMP_T_STR;
Willy Tarreauc1fbbd42014-06-24 17:27:02 +0200[diff] [blame]10343 smp->data.str.str = temp->str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10344 smp->data.str.len = ctx.vlen;
10345
10346 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10347 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]10348 beg = http_get_path(txn);
10349 if (!beg)
10350 beg = end;
10351
10352 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10353
10354 if (beg < ptr && *beg == '/') {
10355 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
10356 smp->data.str.len += ptr - beg;
10357 }
10358
10359 smp->flags = SMP_F_VOL_1ST;
10360 return 1;
10361}
10362
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10363/* This produces a 32-bit hash of the concatenation of the first occurrence of
10364 * the Host header followed by the path component if it begins with a slash ('/').
10365 * This means that '*' will not be added, resulting in exactly the first Host
10366 * 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]10367 * is hashed using the path hash followed by a full avalanche hash and provides a
10368 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10369 * high-traffic sites without having to store whole paths.
10370 */
10371static int
10372smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10373 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10374{
10375 struct http_txn *txn = l7;
10376 struct hdr_ctx ctx;
10377 unsigned int hash = 0;
10378 char *ptr, *beg, *end;
10379 int len;
10380
10381 CHECK_HTTP_MESSAGE_FIRST();
10382
10383 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10384 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]10385 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10386 ptr = ctx.line + ctx.val;
10387 len = ctx.vlen;
10388 while (len--)
10389 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10390 }
10391
10392 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10393 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]10394 beg = http_get_path(txn);
10395 if (!beg)
10396 beg = end;
10397
10398 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10399
10400 if (beg < ptr && *beg == '/') {
10401 while (beg < ptr)
10402 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10403 }
10404 hash = full_hash(hash);
10405
10406 smp->type = SMP_T_UINT;
10407 smp->data.uint = hash;
10408 smp->flags = SMP_F_VOL_1ST;
10409 return 1;
10410}
10411
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10412/* 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]10413 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10414 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10415 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10416 * that in environments where IPv6 is insignificant, truncating the output to
10417 * 8 bytes would still work.
10418 */
10419static int
10420smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10421 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10422{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10423 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10424 struct connection *cli_conn = objt_conn(l4->si[0].end);
10425
10426 if (!cli_conn)
10427 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10428
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10429 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10430 return 0;
10431
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10432 temp = get_trash_chunk();
Willy Tarreau0dff81c2014-07-15 21:34:06 +0200[diff] [blame]10433 *(unsigned int *)temp->str = htonl(smp->data.uint);
10434 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10435
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10436 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10437 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10438 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]10439 temp->len += 4;
10440 break;
10441 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10442 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]10443 temp->len += 16;
10444 break;
10445 default:
10446 return 0;
10447 }
10448
10449 smp->data.str = *temp;
10450 smp->type = SMP_T_BIN;
10451 return 1;
10452}
10453
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10454static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10455smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10456 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10457{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10458 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10459 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10460 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10461
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10462 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10463
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10464 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10465 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10466 return 1;
10467}
10468
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10469/* return a valid test if the current request is the first one on the connection */
10470static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10471smp_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]10472 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10473{
10474 if (!s)
10475 return 0;
10476
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10477 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10478 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10479 return 1;
10480}
10481
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10482/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10483static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10484smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10485 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10486{
10487
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10488 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10489 return 0;
10490
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10491 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10492
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10493 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10494 return 0;
10495
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10496 smp->type = SMP_T_BOOL;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10497 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]10498 return 1;
10499}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10500
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10501/* Accepts exactly 1 argument of type userlist */
10502static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10503smp_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]10504 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10505{
10506
10507 if (!args || args->type != ARGT_USR)
10508 return 0;
10509
10510 CHECK_HTTP_MESSAGE_FIRST();
10511
10512 if (!get_http_auth(l4))
10513 return 0;
10514
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10515 /* if the user does not belong to the userlist or has a wrong password,
10516 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10517 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10518 */
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10519 if (!check_user(args->data.usr, l4->txn.auth.user, l4->txn.auth.pass))
10520 return 0;
10521
10522 /* pat_match_auth() will need the user list */
10523 smp->ctx.a[0] = args->data.usr;
10524
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10525 smp->type = SMP_T_STR;
10526 smp->flags = SMP_F_CONST;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10527 smp->data.str.str = l4->txn.auth.user;
10528 smp->data.str.len = strlen(l4->txn.auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10529
10530 return 1;
10531}
10532
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10533/* Try to find the next occurrence of a cookie name in a cookie header value.
10534 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10535 * the cookie value is returned into *value and *value_l, and the function
10536 * returns a pointer to the next pointer to search from if the value was found.
10537 * Otherwise if the cookie was not found, NULL is returned and neither value
10538 * nor value_l are touched. The input <hdr> string should first point to the
10539 * header's value, and the <hdr_end> pointer must point to the first character
10540 * not part of the value. <list> must be non-zero if value may represent a list
10541 * of values (cookie headers). This makes it faster to abort parsing when no
10542 * list is expected.
10543 */
10544static char *
10545extract_cookie_value(char *hdr, const char *hdr_end,
10546 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10547 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10548{
10549 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10550 char *next;
10551
10552 /* we search at least a cookie name followed by an equal, and more
10553 * generally something like this :
10554 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
10555 */
10556 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
10557 /* Iterate through all cookies on this line */
10558
10559 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
10560 att_beg++;
10561
10562 /* find att_end : this is the first character after the last non
10563 * space before the equal. It may be equal to hdr_end.
10564 */
10565 equal = att_end = att_beg;
10566
10567 while (equal < hdr_end) {
10568 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
10569 break;
10570 if (http_is_spht[(unsigned char)*equal++])
10571 continue;
10572 att_end = equal;
10573 }
10574
10575 /* here, <equal> points to '=', a delimitor or the end. <att_end>
10576 * is between <att_beg> and <equal>, both may be identical.
10577 */
10578
10579 /* look for end of cookie if there is an equal sign */
10580 if (equal < hdr_end && *equal == '=') {
10581 /* look for the beginning of the value */
10582 val_beg = equal + 1;
10583 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
10584 val_beg++;
10585
10586 /* find the end of the value, respecting quotes */
10587 next = find_cookie_value_end(val_beg, hdr_end);
10588
10589 /* make val_end point to the first white space or delimitor after the value */
10590 val_end = next;
10591 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
10592 val_end--;
10593 } else {
10594 val_beg = val_end = next = equal;
10595 }
10596
10597 /* We have nothing to do with attributes beginning with '$'. However,
10598 * they will automatically be removed if a header before them is removed,
10599 * since they're supposed to be linked together.
10600 */
10601 if (*att_beg == '$')
10602 continue;
10603
10604 /* Ignore cookies with no equal sign */
10605 if (equal == next)
10606 continue;
10607
10608 /* Now we have the cookie name between att_beg and att_end, and
10609 * its value between val_beg and val_end.
10610 */
10611
10612 if (att_end - att_beg == cookie_name_l &&
10613 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
10614 /* let's return this value and indicate where to go on from */
10615 *value = val_beg;
10616 *value_l = val_end - val_beg;
10617 return next + 1;
10618 }
10619
10620 /* Set-Cookie headers only have the name in the first attr=value part */
10621 if (!list)
10622 break;
10623 }
10624
10625 return NULL;
10626}
10627
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10628/* Fetch a captured HTTP request header. The index is the position of
10629 * the "capture" option in the configuration file
10630 */
10631static int
10632smp_fetch_capture_header_req(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10633 const struct arg *args, struct sample *smp, const char *kw)
10634{
10635 struct proxy *fe = l4->fe;
10636 struct http_txn *txn = l7;
10637 int idx;
10638
10639 if (!args || args->type != ARGT_UINT)
10640 return 0;
10641
10642 idx = args->data.uint;
10643
10644 if (idx > (fe->nb_req_cap - 1) || txn->req.cap == NULL || txn->req.cap[idx] == NULL)
10645 return 0;
10646
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10647 smp->type = SMP_T_STR;
10648 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10649 smp->data.str.str = txn->req.cap[idx];
10650 smp->data.str.len = strlen(txn->req.cap[idx]);
10651
10652 return 1;
10653}
10654
10655/* Fetch a captured HTTP response header. The index is the position of
10656 * the "capture" option in the configuration file
10657 */
10658static int
10659smp_fetch_capture_header_res(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10660 const struct arg *args, struct sample *smp, const char *kw)
10661{
10662 struct proxy *fe = l4->fe;
10663 struct http_txn *txn = l7;
10664 int idx;
10665
10666 if (!args || args->type != ARGT_UINT)
10667 return 0;
10668
10669 idx = args->data.uint;
10670
10671 if (idx > (fe->nb_rsp_cap - 1) || txn->rsp.cap == NULL || txn->rsp.cap[idx] == NULL)
10672 return 0;
10673
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10674 smp->type = SMP_T_STR;
10675 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10676 smp->data.str.str = txn->rsp.cap[idx];
10677 smp->data.str.len = strlen(txn->rsp.cap[idx]);
10678
10679 return 1;
10680}
10681
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10682/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
10683static int
10684smp_fetch_capture_req_method(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10685 const struct arg *args, struct sample *smp, const char *kw)
10686{
10687 struct chunk *temp;
10688 struct http_txn *txn = l7;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10689 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10690
10691 if (!txn->uri)
10692 return 0;
10693
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10694 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10695
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10696 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10697 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10698
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10699 temp = get_trash_chunk();
10700 temp->str = txn->uri;
10701 temp->len = ptr - txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10702 smp->data.str = *temp;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10703 smp->type = SMP_T_STR;
10704 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10705
10706 return 1;
10707
10708}
10709
10710/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
10711static int
10712smp_fetch_capture_req_uri(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10713 const struct arg *args, struct sample *smp, const char *kw)
10714{
10715 struct chunk *temp;
10716 struct http_txn *txn = l7;
10717 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10718
10719 if (!txn->uri)
10720 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10721
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10722 ptr = txn->uri;
10723
10724 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10725 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10726
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10727 if (!*ptr)
10728 return 0;
10729
10730 ptr++; /* skip the space */
10731
10732 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10733 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10734 if (!ptr)
10735 return 0;
10736 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
10737 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10738
10739 smp->data.str = *temp;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10740 smp->data.str.len = ptr - temp->str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10741 smp->type = SMP_T_STR;
10742 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10743
10744 return 1;
10745}
10746
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10747/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
10748 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10749 */
10750static int
10751smp_fetch_capture_req_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10752 const struct arg *args, struct sample *smp, const char *kw)
10753{
10754 struct http_txn *txn = l7;
10755
10756 if (txn->req.msg_state < HTTP_MSG_HDR_FIRST)
10757 return 0;
10758
10759 if (txn->req.flags & HTTP_MSGF_VER_11)
10760 smp->data.str.str = "HTTP/1.1";
10761 else
10762 smp->data.str.str = "HTTP/1.0";
10763
10764 smp->data.str.len = 8;
10765 smp->type = SMP_T_STR;
10766 smp->flags = SMP_F_CONST;
10767 return 1;
10768
10769}
10770
10771/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
10772 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10773 */
10774static int
10775smp_fetch_capture_res_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10776 const struct arg *args, struct sample *smp, const char *kw)
10777{
10778 struct http_txn *txn = l7;
10779
10780 if (txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
10781 return 0;
10782
10783 if (txn->rsp.flags & HTTP_MSGF_VER_11)
10784 smp->data.str.str = "HTTP/1.1";
10785 else
10786 smp->data.str.str = "HTTP/1.0";
10787
10788 smp->data.str.len = 8;
10789 smp->type = SMP_T_STR;
10790 smp->flags = SMP_F_CONST;
10791 return 1;
10792
10793}
10794
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10795
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10796/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10797 * 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]10798 * 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]10799 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10800 * 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]10801 * Accepts exactly 1 argument of type string. If the input options indicate
10802 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10803 * The returned sample is of type CSTR. Can be used to parse cookies in other
10804 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10805 */
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10806int smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10807 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10808{
10809 struct http_txn *txn = l7;
10810 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10811 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10812 const struct http_msg *msg;
10813 const char *hdr_name;
10814 int hdr_name_len;
10815 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10816 int occ = 0;
10817 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10818
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10819 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10820 return 0;
10821
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10822 if (!ctx) {
10823 /* first call */
10824 ctx = &static_hdr_ctx;
10825 ctx->idx = 0;
10826 smp->ctx.a[2] = ctx;
10827 }
10828
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10829 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10830
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10831 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10832 msg = &txn->req;
10833 hdr_name = "Cookie";
10834 hdr_name_len = 6;
10835 } else {
10836 msg = &txn->rsp;
10837 hdr_name = "Set-Cookie";
10838 hdr_name_len = 10;
10839 }
10840
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10841 if (!occ && !(opt & SMP_OPT_ITERATE))
10842 /* no explicit occurrence and single fetch => last cookie by default */
10843 occ = -1;
10844
10845 /* OK so basically here, either we want only one value and it's the
10846 * last one, or we want to iterate over all of them and we fetch the
10847 * next one.
10848 */
10849
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10850 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10851 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10852 /* search for the header from the beginning, we must first initialize
10853 * the search parameters.
10854 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10855 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10856 ctx->idx = 0;
10857 }
10858
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10859 smp->flags |= SMP_F_VOL_HDR;
10860
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10861 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10862 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
10863 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10864 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
10865 goto out;
10866
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10867 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10868 continue;
10869
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10870 smp->ctx.a[0] = ctx->line + ctx->val;
10871 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10872 }
10873
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10874 smp->type = SMP_T_STR;
10875 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10876 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]10877 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10878 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10879 &smp->data.str.str,
10880 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10881 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10882 found = 1;
10883 if (occ >= 0) {
10884 /* one value was returned into smp->data.str.{str,len} */
10885 smp->flags |= SMP_F_NOT_LAST;
10886 return 1;
10887 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10888 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10889 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10890 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10891 /* all cookie headers and values were scanned. If we're looking for the
10892 * last occurrence, we may return it now.
10893 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10894 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10895 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10896 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10897}
10898
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10899/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10900 * 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]10901 * multiple cookies may be parsed on the same line. The returned sample is of
10902 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10903 */
10904static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10905smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10906 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10907{
10908 struct http_txn *txn = l7;
10909 struct hdr_idx *idx = &txn->hdr_idx;
10910 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10911 const struct http_msg *msg;
10912 const char *hdr_name;
10913 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10914 int cnt;
10915 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10916 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10917
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10918 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10919 return 0;
10920
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10921 CHECK_HTTP_MESSAGE_FIRST();
10922
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10923 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10924 msg = &txn->req;
10925 hdr_name = "Cookie";
10926 hdr_name_len = 6;
10927 } else {
10928 msg = &txn->rsp;
10929 hdr_name = "Set-Cookie";
10930 hdr_name_len = 10;
10931 }
10932
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10933 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]10934 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10935 ctx.idx = 0;
10936 cnt = 0;
10937
10938 while (1) {
10939 /* Note: val_beg == NULL every time we need to fetch a new header */
10940 if (!val_beg) {
10941 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
10942 break;
10943
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10944 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10945 continue;
10946
10947 val_beg = ctx.line + ctx.val;
10948 val_end = val_beg + ctx.vlen;
10949 }
10950
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10951 smp->type = SMP_T_STR;
10952 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10953 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10954 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10955 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10956 &smp->data.str.str,
10957 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10958 cnt++;
10959 }
10960 }
10961
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]10962 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10963 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10964 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10965 return 1;
10966}
10967
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10968/* Fetch an cookie's integer value. The integer value is returned. It
10969 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
10970 */
10971static int
10972smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10973 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10974{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10975 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10976
10977 if (ret > 0) {
10978 smp->type = SMP_T_UINT;
10979 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10980 }
10981
10982 return ret;
10983}
10984
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10985/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10986/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10987/************************************************************************/
10988
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10989/*
10990 * Given a path string and its length, find the position of beginning of the
10991 * query string. Returns NULL if no query string is found in the path.
10992 *
10993 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
10994 *
10995 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
10996 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10997static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10998{
10999 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11000
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11001 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11002 return p ? p + 1 : NULL;
11003}
11004
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11005static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11006{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11007 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11008}
11009
11010/*
11011 * Given a url parameter, find the starting position of the first occurence,
11012 * or NULL if the parameter is not found.
11013 *
11014 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11015 * the function will return query_string+8.
11016 */
11017static char*
11018find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11019 char* url_param_name, size_t url_param_name_l,
11020 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11021{
11022 char *pos, *last;
11023
11024 pos = query_string;
11025 last = query_string + query_string_l - url_param_name_l - 1;
11026
11027 while (pos <= last) {
11028 if (pos[url_param_name_l] == '=') {
11029 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
11030 return pos;
11031 pos += url_param_name_l + 1;
11032 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11033 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11034 pos++;
11035 pos++;
11036 }
11037 return NULL;
11038}
11039
11040/*
11041 * Given a url parameter name, returns its value and size into *value and
11042 * *value_l respectively, and returns non-zero. If the parameter is not found,
11043 * zero is returned and value/value_l are not touched.
11044 */
11045static int
11046find_url_param_value(char* path, size_t path_l,
11047 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11048 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11049{
11050 char *query_string, *qs_end;
11051 char *arg_start;
11052 char *value_start, *value_end;
11053
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11054 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11055 if (!query_string)
11056 return 0;
11057
11058 qs_end = path + path_l;
11059 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11060 url_param_name, url_param_name_l,
11061 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11062 if (!arg_start)
11063 return 0;
11064
11065 value_start = arg_start + url_param_name_l + 1;
11066 value_end = value_start;
11067
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11068 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11069 value_end++;
11070
11071 *value = value_start;
11072 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]11073 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11074}
11075
11076static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11077smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11078 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11079{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11080 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11081 struct http_txn *txn = l7;
11082 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11083
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11084 if (!args || args[0].type != ARGT_STR ||
11085 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11086 return 0;
11087
11088 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11089
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11090 if (args[1].type)
11091 delim = *args[1].data.str.str;
11092
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11093 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]11094 args->data.str.str, args->data.str.len,
11095 &smp->data.str.str, &smp->data.str.len,
11096 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11097 return 0;
11098
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11099 smp->type = SMP_T_STR;
11100 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11101 return 1;
11102}
11103
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11104/* Return the signed integer value for the specified url parameter (see url_param
11105 * above).
11106 */
11107static int
11108smp_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]11109 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11110{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11111 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11112
11113 if (ret > 0) {
11114 smp->type = SMP_T_UINT;
11115 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11116 }
11117
11118 return ret;
11119}
11120
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11121/* This produces a 32-bit hash of the concatenation of the first occurrence of
11122 * the Host header followed by the path component if it begins with a slash ('/').
11123 * This means that '*' will not be added, resulting in exactly the first Host
11124 * entry. If no Host header is found, then the path is used. The resulting value
11125 * is hashed using the url hash followed by a full avalanche hash and provides a
11126 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11127 * high-traffic sites without having to store whole paths.
11128 * this differs from the base32 functions in that it includes the url parameters
11129 * as well as the path
11130 */
11131static int
11132smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11133 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11134{
11135 struct http_txn *txn = l7;
11136 struct hdr_ctx ctx;
11137 unsigned int hash = 0;
11138 char *ptr, *beg, *end;
11139 int len;
11140
11141 CHECK_HTTP_MESSAGE_FIRST();
11142
11143 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11144 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]11145 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11146 ptr = ctx.line + ctx.val;
11147 len = ctx.vlen;
11148 while (len--)
11149 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11150 }
11151
11152 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11153 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]11154 beg = http_get_path(txn);
11155 if (!beg)
11156 beg = end;
11157
11158 for (ptr = beg; ptr < end ; ptr++);
11159
11160 if (beg < ptr && *beg == '/') {
11161 while (beg < ptr)
11162 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11163 }
11164 hash = full_hash(hash);
11165
11166 smp->type = SMP_T_UINT;
11167 smp->data.uint = hash;
11168 smp->flags = SMP_F_VOL_1ST;
11169 return 1;
11170}
11171
11172/* This concatenates the source address with the 32-bit hash of the Host and
11173 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11174 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11175 * on the source address length. The URL hash is stored before the address so
11176 * that in environments where IPv6 is insignificant, truncating the output to
11177 * 8 bytes would still work.
11178 */
11179static int
11180smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11181 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11182{
11183 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11184 struct connection *cli_conn = objt_conn(l4->si[0].end);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11185
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11186 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11187 return 0;
11188
11189 temp = get_trash_chunk();
11190 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
11191 temp->len += sizeof(smp->data.uint);
11192
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11193 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11194 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11195 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]11196 temp->len += 4;
11197 break;
11198 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11199 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]11200 temp->len += 16;
11201 break;
11202 default:
11203 return 0;
11204 }
11205
11206 smp->data.str = *temp;
11207 smp->type = SMP_T_BIN;
11208 return 1;
11209}
11210
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11211/* This function is used to validate the arguments passed to any "hdr" fetch
11212 * keyword. These keywords support an optional positive or negative occurrence
11213 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11214 * is assumed that the types are already the correct ones. Returns 0 on error,
11215 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11216 * error message in case of error, that the caller is responsible for freeing.
11217 * The initial location must either be freeable or NULL.
11218 */
11219static int val_hdr(struct arg *arg, char **err_msg)
11220{
11221 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11222 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11223 return 0;
11224 }
11225 return 1;
11226}
11227
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11228/* takes an UINT value on input supposed to represent the time since EPOCH,
11229 * adds an optional offset found in args[0] and emits a string representing
11230 * the date in RFC-1123/5322 format.
11231 */
11232static int sample_conv_http_date(const struct arg *args, struct sample *smp)
11233{
11234 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
11235 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11236 struct chunk *temp;
11237 struct tm *tm;
11238 time_t curr_date = smp->data.uint;
11239
11240 /* add offset */
11241 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
11242 curr_date += args[0].data.sint;
11243
11244 tm = gmtime(&curr_date);
11245
11246 temp = get_trash_chunk();
11247 temp->len = snprintf(temp->str, temp->size - temp->len,
11248 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11249 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11250 tm->tm_hour, tm->tm_min, tm->tm_sec);
11251
11252 smp->data.str = *temp;
11253 smp->type = SMP_T_STR;
11254 return 1;
11255}
11256
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11257/* Match language range with language tag. RFC2616 14.4:
11258 *
11259 * A language-range matches a language-tag if it exactly equals
11260 * the tag, or if it exactly equals a prefix of the tag such
11261 * that the first tag character following the prefix is "-".
11262 *
11263 * Return 1 if the strings match, else return 0.
11264 */
11265static inline int language_range_match(const char *range, int range_len,
11266 const char *tag, int tag_len)
11267{
11268 const char *end = range + range_len;
11269 const char *tend = tag + tag_len;
11270 while (range < end) {
11271 if (*range == '-' && tag == tend)
11272 return 1;
11273 if (*range != *tag || tag == tend)
11274 return 0;
11275 range++;
11276 tag++;
11277 }
11278 /* Return true only if the last char of the tag is matched. */
11279 return tag == tend;
11280}
11281
11282/* Arguments: The list of expected value, the number of parts returned and the separator */
11283static int sample_conv_q_prefered(const struct arg *args, struct sample *smp)
11284{
11285 const char *al = smp->data.str.str;
11286 const char *end = al + smp->data.str.len;
11287 const char *token;
11288 int toklen;
11289 int qvalue;
11290 const char *str;
11291 const char *w;
11292 int best_q = 0;
11293
11294 /* Set the constant to the sample, because the output of the
11295 * function will be peek in the constant configuration string.
11296 */
11297 smp->flags |= SMP_F_CONST;
11298 smp->data.str.size = 0;
11299 smp->data.str.str = "";
11300 smp->data.str.len = 0;
11301
11302 /* Parse the accept language */
11303 while (1) {
11304
11305 /* Jump spaces, quit if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11306 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11307 al++;
11308 if (al >= end)
11309 break;
11310
11311 /* Start of the fisrt word. */
11312 token = al;
11313
11314 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11315 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11316 al++;
11317 if (al == token)
11318 goto expect_comma;
11319
11320 /* Length of the token. */
11321 toklen = al - token;
11322 qvalue = 1000;
11323
11324 /* Check if the token exists in the list. If the token not exists,
11325 * jump to the next token.
11326 */
11327 str = args[0].data.str.str;
11328 w = str;
11329 while (1) {
11330 if (*str == ';' || *str == '\0') {
11331 if (language_range_match(token, toklen, w, str-w))
11332 goto look_for_q;
11333 if (*str == '\0')
11334 goto expect_comma;
11335 w = str + 1;
11336 }
11337 str++;
11338 }
11339 goto expect_comma;
11340
11341look_for_q:
11342
11343 /* Jump spaces, quit if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11344 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11345 al++;
11346 if (al >= end)
11347 goto process_value;
11348
11349 /* If ',' is found, process the result */
11350 if (*al == ',')
11351 goto process_value;
11352
11353 /* If the character is different from ';', look
11354 * for the end of the header part in best effort.
11355 */
11356 if (*al != ';')
11357 goto expect_comma;
11358
11359 /* Assumes that the char is ';', now expect "q=". */
11360 al++;
11361
11362 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11363 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11364 al++;
11365 if (al >= end)
11366 goto process_value;
11367
11368 /* Expect 'q'. If no 'q', continue in best effort */
11369 if (*al != 'q')
11370 goto process_value;
11371 al++;
11372
11373 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11374 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11375 al++;
11376 if (al >= end)
11377 goto process_value;
11378
11379 /* Expect '='. If no '=', continue in best effort */
11380 if (*al != '=')
11381 goto process_value;
11382 al++;
11383
11384 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11385 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11386 al++;
11387 if (al >= end)
11388 goto process_value;
11389
11390 /* Parse the q value. */
11391 qvalue = parse_qvalue(al, &al);
11392
11393process_value:
11394
11395 /* If the new q value is the best q value, then store the associated
11396 * language in the response. If qvalue is the biggest value (1000),
11397 * break the process.
11398 */
11399 if (qvalue > best_q) {
11400 smp->data.str.str = (char *)w;
11401 smp->data.str.len = str - w;
11402 if (qvalue >= 1000)
11403 break;
11404 best_q = qvalue;
11405 }
11406
11407expect_comma:
11408
11409 /* Expect comma or end. If the end is detected, quit the loop. */
11410 while (al < end && *al != ',')
11411 al++;
11412 if (al >= end)
11413 break;
11414
11415 /* Comma is found, jump it and restart the analyzer. */
11416 al++;
11417 }
11418
11419 /* Set default value if required. */
11420 if (smp->data.str.len == 0 && args[1].type == ARGT_STR) {
11421 smp->data.str.str = args[1].data.str.str;
11422 smp->data.str.len = args[1].data.str.len;
11423 }
11424
11425 /* Return true only if a matching language was found. */
11426 return smp->data.str.len != 0;
11427}
11428
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]11429/*
11430 * Return the struct http_req_action_kw associated to a keyword.
11431 */
11432struct http_req_action_kw *action_http_req_custom(const char *kw)
11433{
11434 if (!LIST_ISEMPTY(&http_req_keywords.list)) {
11435 struct http_req_action_kw_list *kw_list;
11436 int i;
11437
11438 list_for_each_entry(kw_list, &http_req_keywords.list, list) {
11439 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
11440 if (!strcmp(kw, kw_list->kw[i].kw))
11441 return &kw_list->kw[i];
11442 }
11443 }
11444 }
11445 return NULL;
11446}
11447
11448/*
11449 * Return the struct http_res_action_kw associated to a keyword.
11450 */
11451struct http_res_action_kw *action_http_res_custom(const char *kw)
11452{
11453 if (!LIST_ISEMPTY(&http_res_keywords.list)) {
11454 struct http_res_action_kw_list *kw_list;
11455 int i;
11456
11457 list_for_each_entry(kw_list, &http_res_keywords.list, list) {
11458 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
11459 if (!strcmp(kw, kw_list->kw[i].kw))
11460 return &kw_list->kw[i];
11461 }
11462 }
11463 }
11464 return NULL;
11465}
11466
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11467/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11468/* All supported ACL keywords must be declared here. */
11469/************************************************************************/
11470
11471/* Note: must not be declared <const> as its list will be overwritten.
11472 * Please take care of keeping this list alphabetically sorted.
11473 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]11474static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11475 { "base", "base", PAT_MATCH_STR },
11476 { "base_beg", "base", PAT_MATCH_BEG },
11477 { "base_dir", "base", PAT_MATCH_DIR },
11478 { "base_dom", "base", PAT_MATCH_DOM },
11479 { "base_end", "base", PAT_MATCH_END },
11480 { "base_len", "base", PAT_MATCH_LEN },
11481 { "base_reg", "base", PAT_MATCH_REG },
11482 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11483
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11484 { "cook", "req.cook", PAT_MATCH_STR },
11485 { "cook_beg", "req.cook", PAT_MATCH_BEG },
11486 { "cook_dir", "req.cook", PAT_MATCH_DIR },
11487 { "cook_dom", "req.cook", PAT_MATCH_DOM },
11488 { "cook_end", "req.cook", PAT_MATCH_END },
11489 { "cook_len", "req.cook", PAT_MATCH_LEN },
11490 { "cook_reg", "req.cook", PAT_MATCH_REG },
11491 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11492
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11493 { "hdr", "req.hdr", PAT_MATCH_STR },
11494 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
11495 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
11496 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
11497 { "hdr_end", "req.hdr", PAT_MATCH_END },
11498 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
11499 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
11500 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11501
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11502 /* these two declarations uses strings with list storage (in place
11503 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
11504 * and delete functions are relative to the list management. The parse
11505 * and match method are related to the corresponding fetch methods. This
11506 * is very particular ACL declaration mode.
11507 */
11508 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
11509 { "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]11510
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11511 { "path", "path", PAT_MATCH_STR },
11512 { "path_beg", "path", PAT_MATCH_BEG },
11513 { "path_dir", "path", PAT_MATCH_DIR },
11514 { "path_dom", "path", PAT_MATCH_DOM },
11515 { "path_end", "path", PAT_MATCH_END },
11516 { "path_len", "path", PAT_MATCH_LEN },
11517 { "path_reg", "path", PAT_MATCH_REG },
11518 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11519
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11520 { "req_ver", "req.ver", PAT_MATCH_STR },
11521 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11522
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11523 { "scook", "res.cook", PAT_MATCH_STR },
11524 { "scook_beg", "res.cook", PAT_MATCH_BEG },
11525 { "scook_dir", "res.cook", PAT_MATCH_DIR },
11526 { "scook_dom", "res.cook", PAT_MATCH_DOM },
11527 { "scook_end", "res.cook", PAT_MATCH_END },
11528 { "scook_len", "res.cook", PAT_MATCH_LEN },
11529 { "scook_reg", "res.cook", PAT_MATCH_REG },
11530 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11531
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11532 { "shdr", "res.hdr", PAT_MATCH_STR },
11533 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
11534 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
11535 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
11536 { "shdr_end", "res.hdr", PAT_MATCH_END },
11537 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
11538 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
11539 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11540
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11541 { "url", "url", PAT_MATCH_STR },
11542 { "url_beg", "url", PAT_MATCH_BEG },
11543 { "url_dir", "url", PAT_MATCH_DIR },
11544 { "url_dom", "url", PAT_MATCH_DOM },
11545 { "url_end", "url", PAT_MATCH_END },
11546 { "url_len", "url", PAT_MATCH_LEN },
11547 { "url_reg", "url", PAT_MATCH_REG },
11548 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11549
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11550 { "urlp", "urlp", PAT_MATCH_STR },
11551 { "urlp_beg", "urlp", PAT_MATCH_BEG },
11552 { "urlp_dir", "urlp", PAT_MATCH_DIR },
11553 { "urlp_dom", "urlp", PAT_MATCH_DOM },
11554 { "urlp_end", "urlp", PAT_MATCH_END },
11555 { "urlp_len", "urlp", PAT_MATCH_LEN },
11556 { "urlp_reg", "urlp", PAT_MATCH_REG },
11557 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11558
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]11559 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11560}};
11561
11562/************************************************************************/
11563/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11564/************************************************************************/
11565/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]11566static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11567 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11568 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
11569 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
11570
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11571 /* capture are allocated and are permanent in the session */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11572 { "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]11573
11574 /* retrieve these captures from the HTTP logs */
11575 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11576 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11577 { "capture.req.ver", smp_fetch_capture_req_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11578
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11579 { "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]11580 { "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]11581
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11582 /* cookie is valid in both directions (eg: for "stick ...") but cook*
11583 * are only here to match the ACL's name, are request-only and are used
11584 * for ACL compatibility only.
11585 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11586 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
11587 { "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]11588 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11589 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11590
11591 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
11592 * only here to match the ACL's name, are request-only and are used for
11593 * ACL compatibility only.
11594 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11595 { "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]11596 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11597 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
11598 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
11599
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]11600 { "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]11601 { "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]11602 { "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]11603 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11604 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11605
11606 /* HTTP protocol on the request path */
11607 { "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]11608 { "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]11609
11610 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11611 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
11612 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11613
11614 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11615 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
11616 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11617
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11618 /* 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]11619 { "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]11620 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11621 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11622
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11623 { "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]11624 { "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]11625 { "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]11626 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11627 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
11628 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
11629
11630 /* 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]11631 { "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]11632 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11633 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11634
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11635 { "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]11636 { "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]11637 { "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]11638 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11639 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
11640 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
11641
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11642 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11643 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11644 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11645 { "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]11646 { "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]11647
11648 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11649 { "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]11650 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11651 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
11652 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
11653
11654 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11655 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11656 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
11657 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11658 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
11659 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11660 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
11661 { "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]11662 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11663 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11664}};
11665
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11666
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11667/* Note: must not be declared <const> as its list will be overwritten */
11668static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11669 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR},
11670 { "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]11671 { NULL, NULL, 0, 0, 0 },
11672}};
11673
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11674__attribute__((constructor))
11675static void __http_protocol_init(void)
11676{
11677 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11678 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11679 sample_register_convs(&sample_conv_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11680}
11681
11682
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]11683/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]11684 * Local variables:
11685 * c-indent-level: 8
11686 * c-basic-offset: 8
11687 * End:
11688 */