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git01.mediatek.com / haproxy / 5b7f924a9ddb997ddb74515e8319364d51b855a3 / . / src / proto_http.c
blob: 0ac3a47cb6c6f0c10c453e517c3432f35367e8ca [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. */
Willy Tarreau5b7f9242015-05-01 23:05:14 +0200[diff] [blame^]4651 if (http_body_bytes(msg) < msg->body_len)
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]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 Tarreau5b7f9242015-05-01 23:05:14 +0200[diff] [blame^]4676 * We have the first data byte is in msg->sov + msg->sol. We're waiting
4677 * for at least a whole chunk or the whole content length bytes after
4678 * msg->sov + msg->sol.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4679 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4680 if (msg->msg_state == HTTP_MSG_TRAILERS)
4681 goto http_end;
4682
Willy Tarreau5b7f9242015-05-01 23:05:14 +0200[diff] [blame^]4683 if (http_body_bytes(msg) >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4684 goto http_end;
4685
4686 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4687 /* we get here if we need to wait for more data. If the buffer is full,
4688 * we have the maximum we can expect.
4689 */
4690 if (buffer_full(req->buf, global.tune.maxrewrite))
4691 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4692
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4693 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4694 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4695 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4696
4697 if (!(s->flags & SN_ERR_MASK))
4698 s->flags |= SN_ERR_CLITO;
4699 if (!(s->flags & SN_FINST_MASK))
4700 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4701 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4702 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4703
4704 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4705 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4706 /* Not enough data. We'll re-use the http-request
4707 * timeout here. Ideally, we should set the timeout
4708 * relative to the accept() date. We just set the
4709 * request timeout once at the beginning of the
4710 * request.
4711 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4712 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4713 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4714 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4715 return 0;
4716 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4717
4718 http_end:
4719 /* The situation will not evolve, so let's give up on the analysis. */
4720 s->logs.tv_request = now; /* update the request timer to reflect full request */
4721 req->analysers &= ~an_bit;
4722 req->analyse_exp = TICK_ETERNITY;
4723 return 1;
4724
4725 return_bad_req: /* let's centralize all bad requests */
4726 txn->req.msg_state = HTTP_MSG_ERROR;
4727 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4728 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4729
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4730 if (!(s->flags & SN_ERR_MASK))
4731 s->flags |= SN_ERR_PRXCOND;
4732 if (!(s->flags & SN_FINST_MASK))
4733 s->flags |= SN_FINST_R;
4734
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4735 return_err_msg:
4736 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4737 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4738 if (s->listener->counters)
4739 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4740 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4741}
4742
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4743/* send a server's name with an outgoing request over an established connection.
4744 * Note: this function is designed to be called once the request has been scheduled
4745 * for being forwarded. This is the reason why it rewinds the buffer before
4746 * proceeding.
4747 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4748int http_send_name_header(struct http_txn *txn, struct proxy* be, const char* srv_name) {
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4749
4750 struct hdr_ctx ctx;
4751
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4752 char *hdr_name = be->server_id_hdr_name;
4753 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4754 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4755 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4756 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4757
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4758 ctx.idx = 0;
4759
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4760 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4761 if (old_o) {
4762 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4763 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4764 txn->req.next += old_o;
4765 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4766 }
4767
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4768 old_i = chn->buf->i;
4769 while (http_find_header2(hdr_name, hdr_name_len, txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4770 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4771 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4772 }
4773
4774 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4775 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4776 memcpy(hdr_val, hdr_name, hdr_name_len);
4777 hdr_val += hdr_name_len;
4778 *hdr_val++ = ':';
4779 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4780 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4781 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, hdr_val - trash.str);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4782
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4783 if (old_o) {
4784 /* If this was a forwarded request, we must readjust the amount of
4785 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4786 * variations. Note that the current state is >= HTTP_MSG_BODY,
4787 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4788 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4789 old_o += chn->buf->i - old_i;
4790 b_adv(chn->buf, old_o);
4791 txn->req.next -= old_o;
4792 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4793 }
4794
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4795 return 0;
4796}
4797
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4798/* Terminate current transaction and prepare a new one. This is very tricky
4799 * right now but it works.
4800 */
4801void http_end_txn_clean_session(struct session *s)
4802{
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4803 int prev_status = s->txn.status;
4804
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4805 /* FIXME: We need a more portable way of releasing a backend's and a
4806 * server's connections. We need a safer way to reinitialize buffer
4807 * flags. We also need a more accurate method for computing per-request
4808 * data.
4809 */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4810
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4811 /* unless we're doing keep-alive, we want to quickly close the connection
4812 * to the server.
4813 */
4814 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4815 !si_conn_ready(s->req->cons)) {
4816 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4817 si_shutr(s->req->cons);
4818 si_shutw(s->req->cons);
4819 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4820
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4821 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4822 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4823 if (unlikely(s->srv_conn))
4824 sess_change_server(s, NULL);
4825 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4826
4827 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4828 session_process_counters(s);
4829
4830 if (s->txn.status) {
4831 int n;
4832
4833 n = s->txn.status / 100;
4834 if (n < 1 || n > 5)
4835 n = 0;
4836
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4837 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4838 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4839 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4840 s->fe->fe_counters.p.http.comp_rsp++;
4841 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4842 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4843 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4844 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4845 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4846 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4847 s->be->be_counters.p.http.comp_rsp++;
4848 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4849 }
4850
4851 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4852 s->logs.bytes_in -= s->req->buf->i;
4853 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4854
4855 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4856 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4857 !(s->flags & SN_MONITOR) &&
4858 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4859 s->do_log(s);
4860 }
4861
Willy Tarreauc177ea72014-06-25 15:36:04 +0200[diff] [blame]4862 /* stop tracking content-based counters */
4863 session_stop_content_counters(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]4864 session_update_time_stats(s);
4865
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4866 s->logs.accept_date = date; /* user-visible date for logging */
4867 s->logs.tv_accept = now; /* corrected date for internal use */
4868 tv_zero(&s->logs.tv_request);
4869 s->logs.t_queue = -1;
4870 s->logs.t_connect = -1;
4871 s->logs.t_data = -1;
4872 s->logs.t_close = 0;
4873 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4874 s->logs.srv_queue_size = 0; /* we will get this number soon */
4875
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4876 s->logs.bytes_in = s->req->total = s->req->buf->i;
4877 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4878
4879 if (s->pend_pos)
4880 pendconn_free(s->pend_pos);
4881
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4882 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4883 if (s->flags & SN_CURR_SESS) {
4884 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4885 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4886 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4887 if (may_dequeue_tasks(objt_server(s->target), s->be))
4888 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4889 }
4890
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4891 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4892
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4893 /* only release our endpoint if we don't intend to reuse the
4894 * connection.
4895 */
4896 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4897 !si_conn_ready(s->req->cons)) {
4898 si_release_endpoint(s->req->cons);
4899 }
4900
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4901 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4902 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4903 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4904 s->req->cons->exp = TICK_ETERNITY;
Willy Tarreauc9200962013-12-31 23:03:09 +0100[diff] [blame]4905 s->req->cons->flags &= SI_FL_DONT_WAKE; /* we're in the context of process_session */
Willy Tarreaub4d05092014-09-01 20:35:55 +0200[diff] [blame]4906 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT|CF_WAKE_CONNECT|CF_WROTE_DATA);
4907 s->rep->flags &= ~(CF_SHUTR|CF_SHUTR_NOW|CF_READ_ATTACHED|CF_READ_ERROR|CF_READ_NOEXP|CF_STREAMER|CF_STREAMER_FAST|CF_WRITE_PARTIAL|CF_NEVER_WAIT|CF_WROTE_DATA);
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4908 s->flags &= ~(SN_DIRECT|SN_ASSIGNED|SN_ADDR_SET|SN_BE_ASSIGNED|SN_FORCE_PRST|SN_IGNORE_PRST);
Willy Tarreau36346242014-02-24 18:26:30 +0100[diff] [blame]4909 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE|SN_SRV_REUSED);
Cyril Bonté17f77072014-10-22 22:30:13 +0200[diff] [blame]4910 s->flags &= ~(SN_ERR_MASK|SN_FINST_MASK|SN_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4911
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4912 s->txn.meth = 0;
4913 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4914 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4915
4916 if (prev_status == 401 || prev_status == 407) {
4917 /* In HTTP keep-alive mode, if we receive a 401, we still have
4918 * a chance of being able to send the visitor again to the same
4919 * server over the same connection. This is required by some
4920 * broken protocols such as NTLM, and anyway whenever there is
4921 * an opportunity for sending the challenge to the proper place,
4922 * it's better to do it (at least it helps with debugging).
4923 */
4924 s->txn.flags |= TX_PREFER_LAST;
4925 }
4926
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4927 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4928 s->req->cons->flags |= SI_FL_INDEP_STR;
4929
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4930 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4931 s->req->flags |= CF_NEVER_WAIT;
4932 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4933 }
4934
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4935 /* if the request buffer is not empty, it means we're
4936 * about to process another request, so send pending
4937 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4938 * Just don't do this if the buffer is close to be full,
4939 * because the request will wait for it to flush a little
4940 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4941 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4942 if (s->req->buf->i) {
4943 if (s->rep->buf->o &&
4944 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4945 bi_end(s->rep->buf) <= s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4946 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4947 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4948
4949 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4950 channel_auto_read(s->req);
4951 channel_auto_close(s->req);
4952 channel_auto_read(s->rep);
4953 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4954
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]4955 /* we're in keep-alive with an idle connection, monitor it */
4956 si_idle_conn(s->req->cons);
4957
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4958 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4959 s->rep->analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4960}
4961
4962
4963/* This function updates the request state machine according to the response
4964 * state machine and buffer flags. It returns 1 if it changes anything (flag
4965 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4966 * it is only used to find when a request/response couple is complete. Both
4967 * this function and its equivalent should loop until both return zero. It
4968 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4969 */
4970int http_sync_req_state(struct session *s)
4971{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4972 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4973 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4974 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4975 unsigned int old_state = txn->req.msg_state;
4976
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4977 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4978 return 0;
4979
4980 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4981 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4982 * We can shut the read side unless we want to abort_on_close,
4983 * or we have a POST request. The issue with POST requests is
4984 * that some browsers still send a CRLF after the request, and
4985 * this CRLF must be read so that it does not remain in the kernel
4986 * buffers, otherwise a close could cause an RST on some systems
4987 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4988 * Note that if we're using keep-alive on the client side, we'd
4989 * rather poll now and keep the polling enabled for the whole
4990 * session's life than enabling/disabling it between each
4991 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4992 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4993 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
4994 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
4995 !(s->be->options & PR_O_ABRT_CLOSE) &&
4996 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4997 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4998
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4999 /* if the server closes the connection, we want to immediately react
5000 * and close the socket to save packets and syscalls.
5001 */
5002 chn->cons->flags |= SI_FL_NOHALF;
5003
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5004 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5005 goto wait_other_side;
5006
5007 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5008 /* The server has not finished to respond, so we
5009 * don't want to move in order not to upset it.
5010 */
5011 goto wait_other_side;
5012 }
5013
5014 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5015 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5016 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5017 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5018 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5019 goto wait_other_side;
5020 }
5021
5022 /* When we get here, it means that both the request and the
5023 * response have finished receiving. Depending on the connection
5024 * mode, we'll have to wait for the last bytes to leave in either
5025 * direction, and sometimes for a close to be effective.
5026 */
5027
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5028 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5029 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5030 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5031 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5032 }
5033 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5034 /* Option forceclose is set, or either side wants to close,
5035 * let's enforce it now that we're not expecting any new
5036 * data to come. The caller knows the session is complete
5037 * once both states are CLOSED.
5038 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5039 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5040 channel_shutr_now(chn);
5041 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5042 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5043 }
5044 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5045 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5046 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5047 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5048 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5049 channel_auto_read(chn);
5050 txn->req.msg_state = HTTP_MSG_TUNNEL;
5051 chn->flags |= CF_NEVER_WAIT;
5052 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5053 }
5054
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5055 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5056 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5057 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5058
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5059 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5060 txn->req.msg_state = HTTP_MSG_CLOSING;
5061 goto http_msg_closing;
5062 }
5063 else {
5064 txn->req.msg_state = HTTP_MSG_CLOSED;
5065 goto http_msg_closed;
5066 }
5067 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5068 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5069 }
5070
5071 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5072 http_msg_closing:
5073 /* nothing else to forward, just waiting for the output buffer
5074 * to be empty and for the shutw_now to take effect.
5075 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5076 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5077 txn->req.msg_state = HTTP_MSG_CLOSED;
5078 goto http_msg_closed;
5079 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5080 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5081 txn->req.msg_state = HTTP_MSG_ERROR;
5082 goto wait_other_side;
5083 }
5084 }
5085
5086 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5087 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5088 /* see above in MSG_DONE why we only do this in these states */
5089 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5090 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5091 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5092 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5093 goto wait_other_side;
5094 }
5095
5096 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5097 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5098}
5099
5100
5101/* This function updates the response state machine according to the request
5102 * state machine and buffer flags. It returns 1 if it changes anything (flag
5103 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5104 * it is only used to find when a request/response couple is complete. Both
5105 * this function and its equivalent should loop until both return zero. It
5106 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5107 */
5108int http_sync_res_state(struct session *s)
5109{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5110 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5111 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5112 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5113 unsigned int old_state = txn->rsp.msg_state;
5114
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5115 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5116 return 0;
5117
5118 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5119 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5120 * still monitor the server connection for a possible close
5121 * while the request is being uploaded, so we don't disable
5122 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5123 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5124 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5125
5126 if (txn->req.msg_state == HTTP_MSG_ERROR)
5127 goto wait_other_side;
5128
5129 if (txn->req.msg_state < HTTP_MSG_DONE) {
5130 /* The client seems to still be sending data, probably
5131 * because we got an error response during an upload.
5132 * We have the choice of either breaking the connection
5133 * or letting it pass through. Let's do the later.
5134 */
5135 goto wait_other_side;
5136 }
5137
5138 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5139 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5140 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5141 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5142 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5143 goto wait_other_side;
5144 }
5145
5146 /* When we get here, it means that both the request and the
5147 * response have finished receiving. Depending on the connection
5148 * mode, we'll have to wait for the last bytes to leave in either
5149 * direction, and sometimes for a close to be effective.
5150 */
5151
5152 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5153 /* Server-close mode : shut read and wait for the request
5154 * side to close its output buffer. The caller will detect
5155 * when we're in DONE and the other is in CLOSED and will
5156 * catch that for the final cleanup.
5157 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5158 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5159 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5160 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5161 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5162 /* Option forceclose is set, or either side wants to close,
5163 * let's enforce it now that we're not expecting any new
5164 * data to come. The caller knows the session is complete
5165 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5166 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5167 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5168 channel_shutr_now(chn);
5169 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5170 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5171 }
5172 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5173 /* The last possible modes are keep-alive and tunnel. Tunnel will
5174 * need to forward remaining data. Keep-alive will need to monitor
5175 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5176 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5177 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5178 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5179 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5180 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5181 }
5182
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5183 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5184 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5185 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5186 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5187 goto http_msg_closing;
5188 }
5189 else {
5190 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5191 goto http_msg_closed;
5192 }
5193 }
5194 goto wait_other_side;
5195 }
5196
5197 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5198 http_msg_closing:
5199 /* nothing else to forward, just waiting for the output buffer
5200 * to be empty and for the shutw_now to take effect.
5201 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5202 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5203 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5204 goto http_msg_closed;
5205 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5206 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5207 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5208 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5209 if (objt_server(s->target))
5210 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5211 goto wait_other_side;
5212 }
5213 }
5214
5215 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5216 http_msg_closed:
5217 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5218 bi_erase(chn);
5219 channel_auto_close(chn);
5220 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5221 goto wait_other_side;
5222 }
5223
5224 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5225 /* We force the response to leave immediately if we're waiting for the
5226 * other side, since there is no pending shutdown to push it out.
5227 */
5228 if (!channel_is_empty(chn))
5229 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5230 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5231}
5232
5233
5234/* Resync the request and response state machines. Return 1 if either state
5235 * changes.
5236 */
5237int http_resync_states(struct session *s)
5238{
5239 struct http_txn *txn = &s->txn;
5240 int old_req_state = txn->req.msg_state;
5241 int old_res_state = txn->rsp.msg_state;
5242
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5243 http_sync_req_state(s);
5244 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5245 if (!http_sync_res_state(s))
5246 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5247 if (!http_sync_req_state(s))
5248 break;
5249 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5250
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5251 /* OK, both state machines agree on a compatible state.
5252 * There are a few cases we're interested in :
5253 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5254 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5255 * directions, so let's simply disable both analysers.
5256 * - HTTP_MSG_CLOSED on the response only means we must abort the
5257 * request.
5258 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5259 * with server-close mode means we've completed one request and we
5260 * must re-initialize the server connection.
5261 */
5262
5263 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5264 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5265 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5266 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
5267 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5268 channel_auto_close(s->req);
5269 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5270 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5271 channel_auto_close(s->rep);
5272 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5273 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5274 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
5275 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5276 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5277 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5278 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5279 channel_auto_close(s->rep);
5280 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5281 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5282 channel_abort(s->req);
5283 channel_auto_close(s->req);
5284 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5285 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5286 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5287 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5288 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5289 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5290 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5291 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5292 /* server-close/keep-alive: terminate this transaction,
5293 * possibly killing the server connection and reinitialize
5294 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5295 */
5296 http_end_txn_clean_session(s);
5297 }
5298
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5299 return txn->req.msg_state != old_req_state ||
5300 txn->rsp.msg_state != old_res_state;
5301}
5302
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5303/* This function is an analyser which forwards request body (including chunk
5304 * sizes if any). It is called as soon as we must forward, even if we forward
5305 * zero byte. The only situation where it must not be called is when we're in
5306 * tunnel mode and we want to forward till the close. It's used both to forward
5307 * remaining data and to resync after end of body. It expects the msg_state to
5308 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5309 * read more data, or 1 once we can go on with next request or end the session.
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5310 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5311 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5312 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5313int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5314{
5315 struct http_txn *txn = &s->txn;
5316 struct http_msg *msg = &s->txn.req;
5317
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5318 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5319 return 0;
5320
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5321 if ((req->flags & (CF_READ_ERROR|CF_READ_TIMEOUT|CF_WRITE_ERROR|CF_WRITE_TIMEOUT)) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5322 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5323 /* Output closed while we were sending data. We must abort and
5324 * wake the other side up.
5325 */
5326 msg->msg_state = HTTP_MSG_ERROR;
5327 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5328 return 1;
5329 }
5330
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5331 /* Note that we don't have to send 100-continue back because we don't
5332 * need the data to complete our job, and it's up to the server to
5333 * decide whether to return 100, 417 or anything else in return of
5334 * an "Expect: 100-continue" header.
5335 */
5336
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5337 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5338 /* we have msg->sov which points to the first byte of message
5339 * body, and req->buf.p still points to the beginning of the
5340 * message. We forward the headers now, as we don't need them
5341 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5342 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5343 b_adv(req->buf, msg->sov);
5344 msg->next -= msg->sov;
5345 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5346
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5347 /* The previous analysers guarantee that the state is somewhere
5348 * between MSG_BODY and the first MSG_DATA. So msg->sol and
5349 * msg->next are always correct.
5350 */
5351 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
5352 if (msg->flags & HTTP_MSGF_TE_CHNK)
5353 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5354 else
5355 msg->msg_state = HTTP_MSG_DATA;
5356 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5357 }
5358
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5359 /* Some post-connect processing might want us to refrain from starting to
5360 * forward data. Currently, the only reason for this is "balance url_param"
5361 * whichs need to parse/process the request after we've enabled forwarding.
5362 */
5363 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
5364 if (!(s->rep->flags & CF_READ_ATTACHED)) {
5365 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5366 req->flags |= CF_WAKE_CONNECT;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5367 goto missing_data;
5368 }
5369 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5370 }
5371
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5372 /* in most states, we should abort in case of early close */
5373 channel_auto_close(req);
5374
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5375 if (req->to_forward) {
5376 /* We can't process the buffer's contents yet */
5377 req->flags |= CF_WAKE_WRITE;
5378 goto missing_data;
5379 }
5380
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5381 while (1) {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5382 if (msg->msg_state == HTTP_MSG_DATA) {
5383 /* must still forward */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5384 /* we may have some pending data starting at req->buf->p */
5385 if (msg->chunk_len > req->buf->i - msg->next) {
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5386 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5387 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5388 }
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5389 msg->next += msg->chunk_len;
5390 msg->chunk_len = 0;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5391
5392 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5393 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5394 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5395 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5396 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5397 }
5398 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5399 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5400 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5401 * TRAILERS state.
5402 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5403 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5404
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5405 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5406 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5407 else if (ret < 0) {
5408 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5409 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5410 http_capture_bad_message(&s->fe->invalid_req, s, msg, HTTP_MSG_CHUNK_SIZE, s->be);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5411 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5412 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5413 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5414 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5415 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5416 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5417 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5418
5419 if (ret == 0)
5420 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5421 else if (ret < 0) {
5422 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5423 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5424 http_capture_bad_message(&s->fe->invalid_req, s, msg, HTTP_MSG_CHUNK_CRLF, s->be);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5425 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5426 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5427 /* we're in MSG_CHUNK_SIZE now */
5428 }
5429 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5430 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5431
5432 if (ret == 0)
5433 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5434 else if (ret < 0) {
5435 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5436 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5437 http_capture_bad_message(&s->fe->invalid_req, s, msg, HTTP_MSG_TRAILERS, s->be);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5438 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5439 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5440 /* we're in HTTP_MSG_DONE now */
5441 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5442 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5443 int old_state = msg->msg_state;
5444
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5445 /* other states, DONE...TUNNEL */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5446
5447 /* we may have some pending data starting at req->buf->p
5448 * such as last chunk of data or trailers.
5449 */
5450 b_adv(req->buf, msg->next);
Willy Tarreaub4d05092014-09-01 20:35:55 +0200[diff] [blame]5451 if (unlikely(!(s->req->flags & CF_WROTE_DATA)))
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5452 msg->sov -= msg->next;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5453 msg->next = 0;
5454
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5455 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5456 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5457 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5458 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5459 if (http_resync_states(s)) {
5460 /* some state changes occurred, maybe the analyser
5461 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5462 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5463 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5464 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5465 /* request errors are most likely due to
5466 * the server aborting the transfer.
5467 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5468 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5469 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5470 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5471 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5472 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5473 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5474 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5475 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5476
5477 /* If "option abortonclose" is set on the backend, we
5478 * want to monitor the client's connection and forward
5479 * any shutdown notification to the server, which will
5480 * decide whether to close or to go on processing the
5481 * request.
5482 */
5483 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5484 channel_auto_read(req);
5485 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5486 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5487 else if (s->txn.meth == HTTP_METH_POST) {
5488 /* POST requests may require to read extra CRLF
5489 * sent by broken browsers and which could cause
5490 * an RST to be sent upon close on some systems
5491 * (eg: Linux).
5492 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5493 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5494 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5495
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5496 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5497 }
5498 }
5499
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5500 missing_data:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5501 /* we may have some pending data starting at req->buf->p */
5502 b_adv(req->buf, msg->next);
Willy Tarreaub4d05092014-09-01 20:35:55 +0200[diff] [blame]5503 if (unlikely(!(s->req->flags & CF_WROTE_DATA)))
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5504 msg->sov -= msg->next + MIN(msg->chunk_len, req->buf->i);
5505
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5506 msg->next = 0;
5507 msg->chunk_len -= channel_forward(req, msg->chunk_len);
5508
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5509 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5510 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5511 if (!(s->flags & SN_ERR_MASK))
5512 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5513 if (!(s->flags & SN_FINST_MASK)) {
5514 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5515 s->flags |= SN_FINST_H;
5516 else
5517 s->flags |= SN_FINST_D;
5518 }
5519
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5520 s->fe->fe_counters.cli_aborts++;
5521 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5522 if (objt_server(s->target))
5523 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5524
5525 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5526 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5527
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5528 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5529 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5530 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5531
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5532 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5533 * chunks even if the client has closed, so we don't want to set CF_DONTCLOSE.
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5534 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5535 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5536 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5537
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5538 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5539 * what we did. So we always set the CF_EXPECT_MORE flag so that the
Willy Tarreau07293032011-05-30 18:29:28 +0200[diff] [blame]5540 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5541 * modes are already handled by the stream sock layer. We must not do
5542 * this in content-length mode because it could present the MSG_MORE
5543 * flag with the last block of forwarded data, which would cause an
5544 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5545 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5546 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5547 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5548
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5549 return 0;
5550
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5551 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5552 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5553 if (s->listener->counters)
5554 s->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5555
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5556 return_bad_req_stats_ok:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5557 /* we may have some pending data starting at req->buf->p */
5558 b_adv(req->buf, msg->next);
5559 msg->next = 0;
5560
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5561 txn->req.msg_state = HTTP_MSG_ERROR;
5562 if (txn->status) {
5563 /* Note: we don't send any error if some data were already sent */
5564 stream_int_retnclose(req->prod, NULL);
5565 } else {
5566 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5567 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5568 }
5569 req->analysers = 0;
5570 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5571
5572 if (!(s->flags & SN_ERR_MASK))
5573 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5574 if (!(s->flags & SN_FINST_MASK)) {
5575 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5576 s->flags |= SN_FINST_H;
5577 else
5578 s->flags |= SN_FINST_D;
5579 }
5580 return 0;
5581
5582 aborted_xfer:
5583 txn->req.msg_state = HTTP_MSG_ERROR;
5584 if (txn->status) {
5585 /* Note: we don't send any error if some data were already sent */
5586 stream_int_retnclose(req->prod, NULL);
5587 } else {
5588 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5589 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5590 }
5591 req->analysers = 0;
5592 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5593
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5594 s->fe->fe_counters.srv_aborts++;
5595 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5596 if (objt_server(s->target))
5597 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5598
5599 if (!(s->flags & SN_ERR_MASK))
5600 s->flags |= SN_ERR_SRVCL;
5601 if (!(s->flags & SN_FINST_MASK)) {
5602 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5603 s->flags |= SN_FINST_H;
5604 else
5605 s->flags |= SN_FINST_D;
5606 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5607 return 0;
5608}
5609
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5610/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5611 * processing can continue on next analysers, or zero if it either needs more
5612 * data or wants to immediately abort the response (eg: timeout, error, ...). It
5613 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
5614 * when it has nothing left to do, and may remove any analyser when it wants to
5615 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5616 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5617int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5618{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5619 struct http_txn *txn = &s->txn;
5620 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5621 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5622 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5623 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5624 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5625
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5626 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]5627 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5628 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5629 rep,
5630 rep->rex, rep->wex,
5631 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5632 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5633 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5634
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5635 /*
5636 * Now parse the partial (or complete) lines.
5637 * We will check the response syntax, and also join multi-line
5638 * headers. An index of all the lines will be elaborated while
5639 * parsing.
5640 *
5641 * For the parsing, we use a 28 states FSM.
5642 *
5643 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5644 * rep->buf->p = beginning of response
5645 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5646 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5647 * msg->eol = end of current header or line (LF or CRLF)
5648 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5649 */
5650
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5651 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5652 /* There's a protected area at the end of the buffer for rewriting
5653 * purposes. We don't want to start to parse the request if the
5654 * protected area is affected, because we may have to move processed
5655 * data later, which is much more complicated.
5656 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5657 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5658 if (unlikely(!channel_reserved(rep))) {
5659 /* some data has still not left the buffer, wake us once that's done */
5660 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5661 goto abort_response;
5662 channel_dont_close(rep);
5663 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5664 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5665 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5666 }
5667
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5668 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5669 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5670 buffer_slow_realign(rep->buf);
5671
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5672 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5673 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5674 }
5675
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5676 /* 1: we might have to print this header in debug mode */
5677 if (unlikely((global.mode & MODE_DEBUG) &&
5678 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau8767b132014-10-21 19:36:09 +0200[diff] [blame]5679 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5680 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5681
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5682 sol = rep->buf->p;
5683 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5684 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5685
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5686 sol += hdr_idx_first_pos(&txn->hdr_idx);
5687 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5688
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5689 while (cur_idx) {
5690 eol = sol + txn->hdr_idx.v[cur_idx].len;
5691 debug_hdr("srvhdr", s, sol, eol);
5692 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5693 cur_idx = txn->hdr_idx.v[cur_idx].next;
5694 }
5695 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5696
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5697 /*
5698 * Now we quickly check if we have found a full valid response.
5699 * If not so, we check the FD and buffer states before leaving.
5700 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5701 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5702 * responses are checked first.
5703 *
5704 * Depending on whether the client is still there or not, we
5705 * may send an error response back or not. Note that normally
5706 * we should only check for HTTP status there, and check I/O
5707 * errors somewhere else.
5708 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5709
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5710 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5711 /* Invalid response */
5712 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5713 /* we detected a parsing error. We want to archive this response
5714 * in the dedicated proxy area for later troubleshooting.
5715 */
5716 hdr_response_bad:
5717 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5718 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5719
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5720 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5721 if (objt_server(s->target)) {
5722 objt_server(s->target)->counters.failed_resp++;
5723 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5724 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5725 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5726 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5727 rep->analysers = 0;
5728 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5729 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5730 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5731 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5732
5733 if (!(s->flags & SN_ERR_MASK))
5734 s->flags |= SN_ERR_PRXCOND;
5735 if (!(s->flags & SN_FINST_MASK))
5736 s->flags |= SN_FINST_H;
5737
5738 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5739 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5740
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5741 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5742 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5743 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5744 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5745 goto hdr_response_bad;
5746 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5747
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5748 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5749 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5750 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5751 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5752 else if (txn->flags & TX_NOT_FIRST)
5753 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5754
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5755 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5756 if (objt_server(s->target)) {
5757 objt_server(s->target)->counters.failed_resp++;
5758 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5759 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5760
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5761 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5762 rep->analysers = 0;
5763 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5764 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5765 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5766 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5767
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5768 if (!(s->flags & SN_ERR_MASK))
5769 s->flags |= SN_ERR_SRVCL;
5770 if (!(s->flags & SN_FINST_MASK))
5771 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5772 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5773 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5774
Willy Tarreau2a4f5112014-06-23 15:22:31 +0200[diff] [blame]5775 /* read timeout : return a 504 to the client. */
5776 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5777 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5778 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5779 else if (txn->flags & TX_NOT_FIRST)
5780 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5781
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5782 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5783 if (objt_server(s->target)) {
5784 objt_server(s->target)->counters.failed_resp++;
5785 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5786 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5787
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5788 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5789 rep->analysers = 0;
5790 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5791 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5792 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5793 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5794
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5795 if (!(s->flags & SN_ERR_MASK))
5796 s->flags |= SN_ERR_SRVTO;
5797 if (!(s->flags & SN_FINST_MASK))
5798 s->flags |= SN_FINST_H;
5799 return 0;
5800 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5801
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5802 /* client abort with an abortonclose */
5803 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5804 s->fe->fe_counters.cli_aborts++;
5805 s->be->be_counters.cli_aborts++;
5806 if (objt_server(s->target))
5807 objt_server(s->target)->counters.cli_aborts++;
5808
5809 rep->analysers = 0;
5810 channel_auto_close(rep);
5811
5812 txn->status = 400;
5813 bi_erase(rep);
5814 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5815
5816 if (!(s->flags & SN_ERR_MASK))
5817 s->flags |= SN_ERR_CLICL;
5818 if (!(s->flags & SN_FINST_MASK))
5819 s->flags |= SN_FINST_H;
5820
5821 /* process_session() will take care of the error */
5822 return 0;
5823 }
5824
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5825 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5826 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5827 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5828 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5829 else if (txn->flags & TX_NOT_FIRST)
5830 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5831
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5832 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5833 if (objt_server(s->target)) {
5834 objt_server(s->target)->counters.failed_resp++;
5835 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5836 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5837
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5838 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5839 rep->analysers = 0;
5840 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5841 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5842 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5843 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5844
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5845 if (!(s->flags & SN_ERR_MASK))
5846 s->flags |= SN_ERR_SRVCL;
5847 if (!(s->flags & SN_FINST_MASK))
5848 s->flags |= SN_FINST_H;
5849 return 0;
5850 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5851
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5852 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5853 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5854 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5855 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5856 else if (txn->flags & TX_NOT_FIRST)
5857 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5858
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5859 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5860 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5861 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5862
5863 if (!(s->flags & SN_ERR_MASK))
5864 s->flags |= SN_ERR_CLICL;
5865 if (!(s->flags & SN_FINST_MASK))
5866 s->flags |= SN_FINST_H;
5867
5868 /* process_session() will take care of the error */
5869 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5870 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5871
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5872 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5873 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5874 return 0;
5875 }
5876
5877 /* More interesting part now : we know that we have a complete
5878 * response which at least looks like HTTP. We have an indicator
5879 * of each header's length, so we can parse them quickly.
5880 */
5881
5882 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5883 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5884
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5885 /*
5886 * 1: get the status code
5887 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5888 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5889 if (n < 1 || n > 5)
5890 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5891 /* when the client triggers a 4xx from the server, it's most often due
5892 * to a missing object or permission. These events should be tracked
5893 * because if they happen often, it may indicate a brute force or a
5894 * vulnerability scan.
5895 */
5896 if (n == 4)
5897 session_inc_http_err_ctr(s);
5898
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5899 if (objt_server(s->target))
5900 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5901
Willy Tarreau55645552015-05-01 13:26:00 +0200[diff] [blame]5902 /* RFC7230#2.6 has enforced the format of the HTTP version string to be
5903 * exactly one digit "." one digit. This check may be disabled using
5904 * option accept-invalid-http-response.
5905 */
5906 if (!(s->be->options2 & PR_O2_RSPBUG_OK)) {
5907 if (msg->sl.st.v_l != 8) {
5908 msg->err_pos = 0;
5909 goto hdr_response_bad;
5910 }
5911
5912 if (rep->buf->p[4] != '/' ||
5913 !isdigit((unsigned char)rep->buf->p[5]) ||
5914 rep->buf->p[6] != '.' ||
5915 !isdigit((unsigned char)rep->buf->p[7])) {
5916 msg->err_pos = 4;
5917 goto hdr_response_bad;
5918 }
5919 }
5920
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5921 /* check if the response is HTTP/1.1 or above */
5922 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5923 ((rep->buf->p[5] > '1') ||
5924 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5925 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5926
5927 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5928 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]5929
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5930 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5931 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5932
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5933 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]5934
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5935 /* Adjust server's health based on status code. Note: status codes 501
5936 * and 505 are triggered on demand by client request, so we must not
5937 * count them as server failures.
5938 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5939 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5940 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5941 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5942 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5943 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5944 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5945
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5946 /*
5947 * 2: check for cacheability.
5948 */
5949
5950 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5951 case 100:
5952 /*
5953 * We may be facing a 100-continue response, in which case this
5954 * is not the right response, and we're waiting for the next one.
5955 * Let's allow this response to go to the client and wait for the
5956 * next one.
5957 */
5958 hdr_idx_init(&txn->hdr_idx);
5959 msg->next -= channel_forward(rep, msg->next);
5960 msg->msg_state = HTTP_MSG_RPBEFORE;
5961 txn->status = 0;
5962 s->logs.t_data = -1; /* was not a response yet */
5963 goto next_one;
5964
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5965 case 200:
5966 case 203:
5967 case 206:
5968 case 300:
5969 case 301:
5970 case 410:
5971 /* RFC2616 @13.4:
5972 * "A response received with a status code of
5973 * 200, 203, 206, 300, 301 or 410 MAY be stored
5974 * by a cache (...) unless a cache-control
5975 * directive prohibits caching."
5976 *
5977 * RFC2616 @9.5: POST method :
5978 * "Responses to this method are not cacheable,
5979 * unless the response includes appropriate
5980 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5981 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5982 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5983 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5984 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5985 break;
5986 default:
5987 break;
5988 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5989
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5990 /*
5991 * 3: we may need to capture headers
5992 */
5993 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5994 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5995 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5996 txn->rsp.cap, s->fe->rsp_cap);
5997
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]5998 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
5999 * by RFC7230#3.3.3 :
6000 *
6001 * The length of a message body is determined by one of the following
6002 * (in order of precedence):
6003 *
6004 * 1. Any response to a HEAD request and any response with a 1xx
6005 * (Informational), 204 (No Content), or 304 (Not Modified) status
6006 * code is always terminated by the first empty line after the
6007 * header fields, regardless of the header fields present in the
6008 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6009 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]6010 * 2. Any 2xx (Successful) response to a CONNECT request implies that
6011 * the connection will become a tunnel immediately after the empty
6012 * line that concludes the header fields. A client MUST ignore any
6013 * Content-Length or Transfer-Encoding header fields received in
6014 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6015 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]6016 * 3. If a Transfer-Encoding header field is present and the chunked
6017 * transfer coding (Section 4.1) is the final encoding, the message
6018 * body length is determined by reading and decoding the chunked
6019 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6020 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]6021 * If a Transfer-Encoding header field is present in a response and
6022 * the chunked transfer coding is not the final encoding, the
6023 * message body length is determined by reading the connection until
6024 * it is closed by the server. If a Transfer-Encoding header field
6025 * is present in a request and the chunked transfer coding is not
6026 * the final encoding, the message body length cannot be determined
6027 * reliably; the server MUST respond with the 400 (Bad Request)
6028 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6029 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]6030 * If a message is received with both a Transfer-Encoding and a
6031 * Content-Length header field, the Transfer-Encoding overrides the
6032 * Content-Length. Such a message might indicate an attempt to
6033 * perform request smuggling (Section 9.5) or response splitting
6034 * (Section 9.4) and ought to be handled as an error. A sender MUST
6035 * remove the received Content-Length field prior to forwarding such
6036 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6037 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]6038 * 4. If a message is received without Transfer-Encoding and with
6039 * either multiple Content-Length header fields having differing
6040 * field-values or a single Content-Length header field having an
6041 * invalid value, then the message framing is invalid and the
6042 * recipient MUST treat it as an unrecoverable error. If this is a
6043 * request message, the server MUST respond with a 400 (Bad Request)
6044 * status code and then close the connection. If this is a response
6045 * message received by a proxy, the proxy MUST close the connection
6046 * to the server, discard the received response, and send a 502 (Bad
6047 * Gateway) response to the client. If this is a response message
6048 * received by a user agent, the user agent MUST close the
6049 * connection to the server and discard the received response.
6050 *
6051 * 5. If a valid Content-Length header field is present without
6052 * Transfer-Encoding, its decimal value defines the expected message
6053 * body length in octets. If the sender closes the connection or
6054 * the recipient times out before the indicated number of octets are
6055 * received, the recipient MUST consider the message to be
6056 * incomplete and close the connection.
6057 *
6058 * 6. If this is a request message and none of the above are true, then
6059 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6060 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]6061 * 7. Otherwise, this is a response message without a declared message
6062 * body length, so the message body length is determined by the
6063 * number of octets received prior to the server closing the
6064 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6065 */
6066
6067 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6068 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6069 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6070 * FIXME: should we parse anyway and return an error on chunked encoding ?
6071 */
6072 if (txn->meth == HTTP_METH_HEAD ||
6073 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6074 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6075 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]6076 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6077 goto skip_content_length;
6078 }
6079
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6080 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6081 ctx.idx = 0;
Willy Tarreaue77bc172015-05-01 10:06:30 +0200[diff] [blame]6082 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6083 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6084 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6085 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6086 /* bad transfer-encoding (chunked followed by something else) */
6087 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6088 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6089 break;
6090 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6091 }
6092
Willy Tarreaudfa3d922015-04-30 10:57:51 +0200[diff] [blame]6093 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6094 ctx.idx = 0;
Willy Tarreau660418d2015-05-01 10:25:45 +0200[diff] [blame]6095 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreaudfa3d922015-04-30 10:57:51 +0200[diff] [blame]6096 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6097 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6098 }
Willy Tarreau660418d2015-05-01 10:25:45 +0200[diff] [blame]6099 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]6100 signed long long cl;
6101
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6102 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6103 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6104 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6105 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6106
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6107 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6108 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6109 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6110 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6111
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6112 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6113 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6114 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6115 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6116
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6117 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6118 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6119 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6120 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6121
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6122 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6123 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6124 }
6125
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6126 if (s->fe->comp || s->be->comp)
6127 select_compression_response_header(s, rep->buf);
6128
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6129skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6130 /* Now we have to check if we need to modify the Connection header.
6131 * This is more difficult on the response than it is on the request,
6132 * because we can have two different HTTP versions and we don't know
6133 * how the client will interprete a response. For instance, let's say
6134 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6135 * HTTP/1.1 response without any header. Maybe it will bound itself to
6136 * HTTP/1.0 because it only knows about it, and will consider the lack
6137 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6138 * the lack of header as a keep-alive. Thus we will use two flags
6139 * indicating how a request MAY be understood by the client. In case
6140 * of multiple possibilities, we'll fix the header to be explicit. If
6141 * ambiguous cases such as both close and keepalive are seen, then we
6142 * will fall back to explicit close. Note that we won't take risks with
6143 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6144 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6145 */
6146
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6147 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6148 txn->status == 101)) {
6149 /* Either we've established an explicit tunnel, or we're
6150 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6151 * to understand the next protocols. We have to switch to tunnel
6152 * mode, so that we transfer the request and responses then let
6153 * this protocol pass unmodified. When we later implement specific
6154 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6155 * header which contains information about that protocol for
6156 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6157 */
6158 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6159 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6160 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6161 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6162 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6163 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6164 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6165
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6166 /* this situation happens when combining pretend-keepalive with httpclose. */
6167 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6168 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6169 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6170 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6171
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6172 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6173 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6174 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6175 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6176
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6177 /* now adjust header transformations depending on current state */
6178 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6179 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6180 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6181 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6182 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6183 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6184 else { /* SCL / KAL */
6185 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6186 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6187 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6188 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6189
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6190 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6191 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6192
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6193 /* Some keep-alive responses are converted to Server-close if
6194 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6195 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6196 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6197 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6198 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6199 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6200 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6201 }
6202
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6203 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6204 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6205
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6206 /* end of job, return OK */
6207 rep->analysers &= ~an_bit;
6208 rep->analyse_exp = TICK_ETERNITY;
6209 channel_auto_close(rep);
6210 return 1;
6211
6212 abort_keep_alive:
6213 /* A keep-alive request to the server failed on a network error.
6214 * The client is required to retry. We need to close without returning
6215 * any other information so that the client retries.
6216 */
6217 txn->status = 0;
6218 rep->analysers = 0;
6219 s->req->analysers = 0;
6220 channel_auto_close(rep);
6221 s->logs.logwait = 0;
6222 s->logs.level = 0;
6223 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
6224 bi_erase(rep);
6225 stream_int_retnclose(rep->cons, NULL);
6226 return 0;
6227}
6228
6229/* This function performs all the processing enabled for the current response.
6230 * It normally returns 1 unless it wants to break. It relies on buffers flags,
6231 * and updates s->rep->analysers. It might make sense to explode it into several
6232 * other functions. It works like process_request (see indications above).
6233 */
6234int http_process_res_common(struct session *s, struct channel *rep, int an_bit, struct proxy *px)
6235{
6236 struct http_txn *txn = &s->txn;
6237 struct http_msg *msg = &txn->rsp;
6238 struct proxy *cur_proxy;
6239 struct cond_wordlist *wl;
6240 struct http_res_rule *http_res_last_rule = NULL;
6241
6242 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
6243 now_ms, __FUNCTION__,
6244 s,
6245 rep,
6246 rep->rex, rep->wex,
6247 rep->flags,
6248 rep->buf->i,
6249 rep->analysers);
6250
6251 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6252 return 0;
6253
6254 rep->analysers &= ~an_bit;
6255 rep->analyse_exp = TICK_ETERNITY;
6256
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6257 /* The stats applet needs to adjust the Connection header but we don't
6258 * apply any filter there.
6259 */
6260 if (unlikely(objt_applet(s->target) == &http_stats_applet))
6261 goto skip_filters;
6262
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6263 /*
6264 * We will have to evaluate the filters.
6265 * As opposed to version 1.2, now they will be evaluated in the
6266 * filters order and not in the header order. This means that
6267 * each filter has to be validated among all headers.
6268 *
6269 * Filters are tried with ->be first, then with ->fe if it is
6270 * different from ->be.
6271 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6272
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6273 cur_proxy = s->be;
6274 while (1) {
6275 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6276
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6277 /* evaluate http-response rules */
6278 if (!http_res_last_rule)
6279 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]6280
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6281 /* try headers filters */
6282 if (rule_set->rsp_exp != NULL) {
6283 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6284 return_bad_resp:
6285 if (objt_server(s->target)) {
6286 objt_server(s->target)->counters.failed_resp++;
6287 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6288 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6289 s->be->be_counters.failed_resp++;
6290 return_srv_prx_502:
6291 rep->analysers = 0;
6292 txn->status = 502;
6293 s->logs.t_data = -1; /* was not a valid response */
6294 rep->prod->flags |= SI_FL_NOLINGER;
6295 bi_erase(rep);
6296 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
6297 if (!(s->flags & SN_ERR_MASK))
6298 s->flags |= SN_ERR_PRXCOND;
6299 if (!(s->flags & SN_FINST_MASK))
6300 s->flags |= SN_FINST_H;
6301 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6302 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6303 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6304
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6305 /* has the response been denied ? */
6306 if (txn->flags & TX_SVDENY) {
6307 if (objt_server(s->target))
6308 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6309
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6310 s->be->be_counters.denied_resp++;
6311 s->fe->fe_counters.denied_resp++;
6312 if (s->listener->counters)
6313 s->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6314
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6315 goto return_srv_prx_502;
6316 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6317
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6318 /* add response headers from the rule sets in the same order */
6319 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6320 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6321 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6322 if (wl->cond) {
6323 int ret = acl_exec_cond(wl->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
6324 ret = acl_pass(ret);
6325 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6326 ret = !ret;
6327 if (!ret)
6328 continue;
6329 }
6330 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6331 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6332 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6333
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6334 /* check whether we're already working on the frontend */
6335 if (cur_proxy == s->fe)
6336 break;
6337 cur_proxy = s->fe;
6338 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6339
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6340 /* OK that's all we can do for 1xx responses */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6341 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6342 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6343
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6344 /*
6345 * Now check for a server cookie.
6346 */
6347 if (s->be->cookie_name || s->be->appsession_name || s->fe->capture_name ||
6348 (s->be->options & PR_O_CHK_CACHE))
6349 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6350
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6351 /*
6352 * Check for cache-control or pragma headers if required.
6353 */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6354 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]6355 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6356
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6357 /*
6358 * Add server cookie in the response if needed
6359 */
6360 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6361 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
6362 (!(s->flags & SN_DIRECT) ||
6363 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6364 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6365 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6366 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6367 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
6368 !(s->flags & SN_IGNORE_PRST)) {
6369 /* the server is known, it's not the one the client requested, or the
6370 * cookie's last seen date needs to be refreshed. We have to
6371 * insert a set-cookie here, except if we want to insert only on POST
6372 * requests and this one isn't. Note that servers which don't have cookies
6373 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6374 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6375 if (!objt_server(s->target)->cookie) {
6376 chunk_printf(&trash,
6377 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6378 s->be->cookie_name);
6379 }
6380 else {
6381 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]6382
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6383 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6384 /* emit last_date, which is mandatory */
6385 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6386 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6387 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6388
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6389 if (s->be->cookie_maxlife) {
6390 /* emit first_date, which is either the original one or
6391 * the current date.
6392 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6393 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6394 s30tob64(txn->cookie_first_date ?
6395 txn->cookie_first_date >> 2 :
6396 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6397 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6398 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6399 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6400 chunk_appendf(&trash, "; path=/");
6401 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6402
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6403 if (s->be->cookie_domain)
6404 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6405
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6406 if (s->be->ck_opts & PR_CK_HTTPONLY)
6407 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6408
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6409 if (s->be->ck_opts & PR_CK_SECURE)
6410 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6411
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6412 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6413 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6414
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6415 txn->flags &= ~TX_SCK_MASK;
6416 if (objt_server(s->target)->cookie && (s->flags & SN_DIRECT))
6417 /* the server did not change, only the date was updated */
6418 txn->flags |= TX_SCK_UPDATED;
6419 else
6420 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6421
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6422 /* Here, we will tell an eventual cache on the client side that we don't
6423 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6424 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6425 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6426 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6427 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6428
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6429 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6430
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6431 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6432 "Cache-control: private", 22) < 0))
6433 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6434 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6435 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6436
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6437 /*
6438 * Check if result will be cacheable with a cookie.
6439 * We'll block the response if security checks have caught
6440 * nasty things such as a cacheable cookie.
6441 */
6442 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6443 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6444 (s->be->options & PR_O_CHK_CACHE)) {
6445 /* we're in presence of a cacheable response containing
6446 * a set-cookie header. We'll block it as requested by
6447 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6448 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6449 if (objt_server(s->target))
6450 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6451
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6452 s->be->be_counters.denied_resp++;
6453 s->fe->fe_counters.denied_resp++;
6454 if (s->listener->counters)
6455 s->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6456
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6457 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6458 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6459 send_log(s->be, LOG_ALERT,
6460 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6461 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6462 goto return_srv_prx_502;
6463 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6464
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6465 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6466 /*
6467 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6468 * If an "Upgrade" token is found, the header is left untouched in order
6469 * 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]6470 * if anything but "Upgrade" is present in the Connection header. We don't
6471 * want to touch any 101 response either since it's switching to another
6472 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6473 */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6474 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6475 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
6476 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6477 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6478 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6479
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6480 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6481 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6482 /* we want a keep-alive response here. Keep-alive header
6483 * required if either side is not 1.1.
6484 */
6485 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6486 want_flags |= TX_CON_KAL_SET;
6487 }
6488 else {
6489 /* we want a close response here. Close header required if
6490 * the server is 1.1, regardless of the client.
6491 */
6492 if (msg->flags & HTTP_MSGF_VER_11)
6493 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6494 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6495
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6496 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6497 http_change_connection_header(txn, msg, want_flags);
6498 }
6499
6500 skip_header_mangling:
6501 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
6502 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
6503 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6504
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6505 /* if the user wants to log as soon as possible, without counting
6506 * bytes from the server, then this is the right moment. We have
6507 * to temporarily assign bytes_out to log what we currently have.
6508 */
6509 if (!LIST_ISEMPTY(&s->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
6510 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6511 s->logs.bytes_out = txn->rsp.eoh;
6512 s->do_log(s);
6513 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6514 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6515 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6516}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6517
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6518/* This function is an analyser which forwards response body (including chunk
6519 * sizes if any). It is called as soon as we must forward, even if we forward
6520 * zero byte. The only situation where it must not be called is when we're in
6521 * tunnel mode and we want to forward till the close. It's used both to forward
6522 * remaining data and to resync after end of body. It expects the msg_state to
6523 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
6524 * 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]6525 *
6526 * It is capable of compressing response data both in content-length mode and
6527 * in chunked mode. The state machines follows different flows depending on
6528 * whether content-length and chunked modes are used, since there are no
6529 * trailers in content-length :
6530 *
6531 * chk-mode cl-mode
6532 * ,----- BODY -----.
6533 * / \
6534 * V size > 0 V chk-mode
6535 * .--> SIZE -------------> DATA -------------> CRLF
6536 * | | size == 0 | last byte |
6537 * | v final crlf v inspected |
6538 * | TRAILERS -----------> DONE |
6539 * | |
6540 * `----------------------------------------------'
6541 *
6542 * Compression only happens in the DATA state, and must be flushed in final
6543 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6544 * is performed at once on final states for all bytes parsed, or when leaving
6545 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6546 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6547int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6548{
6549 struct http_txn *txn = &s->txn;
6550 struct http_msg *msg = &s->txn.rsp;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6551 static struct buffer *tmpbuf = NULL;
6552 int compressing = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6553 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6554
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6555 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6556 return 0;
6557
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6558 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]6559 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]6560 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6561 /* Output closed while we were sending data. We must abort and
6562 * wake the other side up.
6563 */
6564 msg->msg_state = HTTP_MSG_ERROR;
6565 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6566 return 1;
6567 }
6568
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6569 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6570 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6571
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]6572 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6573 /* we have msg->sov which points to the first byte of message
6574 * body, and res->buf.p still points to the beginning of the
6575 * message. We forward the headers now, as we don't need them
6576 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6577 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6578 b_adv(res->buf, msg->sov);
6579 msg->next -= msg->sov;
6580 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6581
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6582 /* The previous analysers guarantee that the state is somewhere
6583 * between MSG_BODY and the first MSG_DATA. So msg->sol and
6584 * msg->next are always correct.
6585 */
6586 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
6587 if (msg->flags & HTTP_MSGF_TE_CHNK)
6588 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6589 else
6590 msg->msg_state = HTTP_MSG_DATA;
6591 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6592 }
6593
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6594 if (res->to_forward) {
6595 /* We can't process the buffer's contents yet */
6596 res->flags |= CF_WAKE_WRITE;
6597 goto missing_data;
6598 }
6599
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6600 if (unlikely(s->comp_algo != NULL) && msg->msg_state < HTTP_MSG_TRAILERS) {
6601 /* We need a compression buffer in the DATA state to put the
6602 * output of compressed data, and in CRLF state to let the
6603 * TRAILERS state finish the job of removing the trailing CRLF.
6604 */
6605 if (unlikely(tmpbuf == NULL)) {
6606 /* this is the first time we need the compression buffer */
6607 tmpbuf = pool_alloc2(pool2_buffer);
6608 if (tmpbuf == NULL)
6609 goto aborted_xfer; /* no memory */
6610 }
6611
6612 ret = http_compression_buffer_init(s, res->buf, tmpbuf);
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6613 if (ret < 0) {
6614 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6615 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6616 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6617 compressing = 1;
6618 }
6619
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6620 while (1) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6621 switch (msg->msg_state - HTTP_MSG_DATA) {
6622 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6623 /* we may have some pending data starting at res->buf->p */
6624 if (unlikely(s->comp_algo)) {
Willy Tarreau7f2f8d52014-04-18 00:20:14 +0200[diff] [blame]6625 ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6626 if (ret < 0)
6627 goto aborted_xfer;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6628
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6629 if (msg->chunk_len) {
6630 /* input empty or output full */
6631 if (res->buf->i > msg->next)
6632 res->flags |= CF_WAKE_WRITE;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6633 goto missing_data;
6634 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6635 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6636 else {
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6637 if (msg->chunk_len > res->buf->i - msg->next) {
6638 /* output full */
6639 res->flags |= CF_WAKE_WRITE;
6640 goto missing_data;
6641 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6642 msg->next += msg->chunk_len;
6643 msg->chunk_len = 0;
6644 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6645
6646 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6647 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6648 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6649 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6650 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6651 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6652 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6653 /* fall through for HTTP_MSG_CHUNK_CRLF */
6654
6655 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6656 /* we want the CRLF after the data */
6657
6658 ret = http_skip_chunk_crlf(msg);
6659 if (ret == 0)
6660 goto missing_data;
6661 else if (ret < 0) {
6662 if (msg->err_pos >= 0)
6663 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
6664 goto return_bad_res;
6665 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6666 /* we're in MSG_CHUNK_SIZE now, fall through */
6667
6668 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6669 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6670 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6671 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6672 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6673
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6674 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6675 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6676 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6677 else if (ret < 0) {
6678 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6679 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]6680 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6681 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6682 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6683 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6684
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6685 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6686 if (unlikely(compressing)) {
6687 /* we need to flush output contents before syncing FSMs */
6688 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6689 compressing = 0;
6690 }
6691
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6692 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6693 if (ret == 0)
6694 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6695 else if (ret < 0) {
6696 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6697 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]6698 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6699 }
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6700 /* we're in HTTP_MSG_DONE now, fall through */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6701
6702 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6703 /* other states, DONE...TUNNEL */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6704 if (unlikely(compressing)) {
6705 /* we need to flush output contents before syncing FSMs */
6706 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6707 compressing = 0;
6708 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6709
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6710 /* we may have some pending data starting at res->buf->p
6711 * such as a last chunk of data or trailers.
6712 */
6713 b_adv(res->buf, msg->next);
6714 msg->next = 0;
6715
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6716 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6717 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6718 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6719 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6720 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6721
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6722 if (http_resync_states(s)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6723 /* some state changes occurred, maybe the analyser
6724 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6725 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6726 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6727 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6728 /* response errors are most likely due to
6729 * the client aborting the transfer.
6730 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6731 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6732 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6733 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6734 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6735 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6736 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6737 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6738 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6739 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6740 }
6741 }
6742
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6743 missing_data:
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6744 /* we may have some pending data starting at res->buf->p */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6745 if (unlikely(compressing)) {
6746 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6747 compressing = 0;
6748 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6749
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6750 if ((s->comp_algo == NULL || msg->msg_state >= HTTP_MSG_TRAILERS)) {
6751 b_adv(res->buf, msg->next);
6752 msg->next = 0;
6753 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6754 }
6755
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6756 if (res->flags & CF_SHUTW)
6757 goto aborted_xfer;
6758
6759 /* stop waiting for data if the input is closed before the end. If the
6760 * client side was already closed, it means that the client has aborted,
6761 * so we don't want to count this as a server abort. Otherwise it's a
6762 * server abort.
6763 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6764 if (res->flags & CF_SHUTR) {
Willy Tarreaub2c6a782014-04-23 20:29:01 +0200[diff] [blame]6765 if ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6766 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6767 if (!(s->flags & SN_ERR_MASK))
6768 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6769 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6770 if (objt_server(s->target))
6771 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6772 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6773 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6774
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6775 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6776 if (!s->req->analysers)
6777 goto return_bad_res;
6778
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6779 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6780 * 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]6781 * Similarly, with keep-alive on the client side, we don't want to forward a
6782 * close.
6783 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6784 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6785 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6786 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6787 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6788
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6789 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6790 * 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]6791 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6792 * modes are already handled by the stream sock layer. We must not do
6793 * this in content-length mode because it could present the MSG_MORE
6794 * flag with the last block of forwarded data, which would cause an
6795 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6796 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6797 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6798 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6799
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6800 /* the session handler will take care of timeouts and errors */
6801 return 0;
6802
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6803 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6804 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6805 if (objt_server(s->target))
6806 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6807
6808 return_bad_res_stats_ok:
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]6809 if (unlikely(compressing)) {
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6810 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]6811 compressing = 0;
6812 }
6813
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6814 /* we may have some pending data starting at res->buf->p */
6815 if (s->comp_algo == NULL) {
6816 b_adv(res->buf, msg->next);
6817 msg->next = 0;
6818 }
6819
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6820 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6821 /* don't send any error message as we're in the body */
6822 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6823 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6824 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]6825 if (objt_server(s->target))
6826 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6827
6828 if (!(s->flags & SN_ERR_MASK))
6829 s->flags |= SN_ERR_PRXCOND;
6830 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6831 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6832 return 0;
6833
6834 aborted_xfer:
Willy Tarreau6fef8ae2014-04-22 21:22:06 +0200[diff] [blame]6835 if (unlikely(compressing)) {
6836 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
6837 compressing = 0;
6838 }
6839
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6840 txn->rsp.msg_state = HTTP_MSG_ERROR;
6841 /* don't send any error message as we're in the body */
6842 stream_int_retnclose(res->cons, NULL);
6843 res->analysers = 0;
6844 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6845
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6846 s->fe->fe_counters.cli_aborts++;
6847 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6848 if (objt_server(s->target))
6849 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6850
6851 if (!(s->flags & SN_ERR_MASK))
6852 s->flags |= SN_ERR_CLICL;
6853 if (!(s->flags & SN_FINST_MASK))
6854 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6855 return 0;
6856}
6857
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6858/* Iterate the same filter through all request headers.
6859 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6860 * Since it can manage the switch to another backend, it updates the per-proxy
6861 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6862 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6863int 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]6864{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6865 char *cur_ptr, *cur_end, *cur_next;
6866 int cur_idx, old_idx, last_hdr;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6867 struct http_txn *txn = &s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6868 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6869 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6870
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6871 last_hdr = 0;
6872
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6873 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6874 old_idx = 0;
6875
6876 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6877 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6878 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6879 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6880 (exp->action == ACT_ALLOW ||
6881 exp->action == ACT_DENY ||
6882 exp->action == ACT_TARPIT))
6883 return 0;
6884
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6885 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6886 if (!cur_idx)
6887 break;
6888
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6889 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6890 cur_ptr = cur_next;
6891 cur_end = cur_ptr + cur_hdr->len;
6892 cur_next = cur_end + cur_hdr->cr + 1;
6893
6894 /* Now we have one header between cur_ptr and cur_end,
6895 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6896 */
6897
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]6898 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]6899 switch (exp->action) {
6900 case ACT_SETBE:
6901 /* It is not possible to jump a second time.
6902 * FIXME: should we return an HTTP/500 here so that
6903 * the admin knows there's a problem ?
6904 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6905 if (s->be != s->fe)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6906 break;
6907
6908 /* Swithing Proxy */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6909 session_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6910 last_hdr = 1;
6911 break;
6912
6913 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6914 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6915 last_hdr = 1;
6916 break;
6917
6918 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6919 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6920 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6921 break;
6922
6923 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6924 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6925 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6926 break;
6927
6928 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]6929 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
6930 if (trash.len < 0)
6931 return -1;
6932
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6933 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6934 /* FIXME: if the user adds a newline in the replacement, the
6935 * index will not be recalculated for now, and the new line
6936 * will not be counted as a new header.
6937 */
6938
6939 cur_end += delta;
6940 cur_next += delta;
6941 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6942 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6943 break;
6944
6945 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6946 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6947 cur_next += delta;
6948
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6949 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6950 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6951 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6952 cur_hdr->len = 0;
6953 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6954 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6955 break;
6956
6957 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6958 }
6959
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6960 /* keep the link from this header to next one in case of later
6961 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6962 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6963 old_idx = cur_idx;
6964 }
6965 return 0;
6966}
6967
6968
6969/* Apply the filter to the request line.
6970 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6971 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6972 * Since it can manage the switch to another backend, it updates the per-proxy
6973 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6974 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6975int 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]6976{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6977 char *cur_ptr, *cur_end;
6978 int done;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6979 struct http_txn *txn = &s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6980 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6981
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6982 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6983 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6984 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6985 (exp->action == ACT_ALLOW ||
6986 exp->action == ACT_DENY ||
6987 exp->action == ACT_TARPIT))
6988 return 0;
6989 else if (exp->action == ACT_REMOVE)
6990 return 0;
6991
6992 done = 0;
6993
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6994 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6995 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6996
6997 /* Now we have the request line between cur_ptr and cur_end */
6998
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]6999 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]7000 switch (exp->action) {
7001 case ACT_SETBE:
7002 /* It is not possible to jump a second time.
7003 * FIXME: should we return an HTTP/500 here so that
7004 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7005 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7006 if (s->be != s->fe)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7007 break;
7008
7009 /* Swithing Proxy */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7010 session_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7011 done = 1;
7012 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7013
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7014 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7015 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7016 done = 1;
7017 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7018
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7019 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7020 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7021 done = 1;
7022 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7023
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7024 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7025 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7026 done = 1;
7027 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7028
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7029 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7030 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7031 if (trash.len < 0)
7032 return -1;
7033
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7034 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7035 /* FIXME: if the user adds a newline in the replacement, the
7036 * index will not be recalculated for now, and the new line
7037 * will not be counted as a new header.
7038 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7039
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7040 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7041 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7042 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7043 HTTP_MSG_RQMETH,
7044 cur_ptr, cur_end + 1,
7045 NULL, NULL);
7046 if (unlikely(!cur_end))
7047 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7048
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7049 /* we have a full request and we know that we have either a CR
7050 * or an LF at <ptr>.
7051 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7052 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7053 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]7054 /* there is no point trying this regex on headers */
7055 return 1;
7056 }
7057 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7058 return done;
7059}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7060
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7061
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7062
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7063/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7064 * 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]7065 * 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]7066 * unparsable request. Since it can manage the switch to another backend, it
7067 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7068 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7069int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7070{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7071 struct http_txn *txn = &s->txn;
7072 struct hdr_exp *exp;
7073
7074 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7075 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7076
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7077 /*
7078 * The interleaving of transformations and verdicts
7079 * makes it difficult to decide to continue or stop
7080 * the evaluation.
7081 */
7082
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7083 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7084 break;
7085
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7086 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7087 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7088 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7089 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7090
7091 /* if this filter had a condition, evaluate it now and skip to
7092 * next filter if the condition does not match.
7093 */
7094 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7095 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]7096 ret = acl_pass(ret);
7097 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7098 ret = !ret;
7099
7100 if (!ret)
7101 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7102 }
7103
7104 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7105 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7106 if (unlikely(ret < 0))
7107 return -1;
7108
7109 if (likely(ret == 0)) {
7110 /* The filter did not match the request, it can be
7111 * iterated through all headers.
7112 */
Willy Tarreaua256fae2015-01-30 20:58:58 +0100[diff] [blame]7113 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7114 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7115 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7116 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7117 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7118}
7119
7120
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7121
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7122/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7123 * Try to retrieve the server associated to the appsession.
7124 * If the server is found, it's assigned to the session.
7125 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7126void manage_client_side_appsession(struct session *s, const char *buf, int len) {
7127 struct http_txn *txn = &s->txn;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7128 appsess *asession = NULL;
7129 char *sessid_temp = NULL;
7130
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7131 if (len > s->be->appsession_len) {
7132 len = s->be->appsession_len;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7133 }
7134
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7135 if (s->be->options2 & PR_O2_AS_REQL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7136 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7137 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7138 /* 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]7139 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7140 }
7141
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7142 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7143 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7144 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]7145 return;
7146 }
7147
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7148 memcpy(txn->sessid, buf, len);
7149 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7150 }
7151
7152 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
7153 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7154 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]7155 return;
7156 }
7157
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7158 memcpy(sessid_temp, buf, len);
7159 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7160
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7161 asession = appsession_hash_lookup(&(s->be->htbl_proxy), sessid_temp);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7162 /* free previously allocated memory */
7163 pool_free2(apools.sessid, sessid_temp);
7164
7165 if (asession != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7166 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
7167 if (!(s->be->options2 & PR_O2_AS_REQL))
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7168 asession->request_count++;
7169
7170 if (asession->serverid != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7171 struct server *srv = s->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7172
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7173 while (srv) {
7174 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7175 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7176 (s->be->options & PR_O_PERSIST) ||
7177 (s->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7178 /* we found the server and it's usable */
7179 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7180 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7181 s->flags |= SN_DIRECT | SN_ASSIGNED;
7182 s->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]7183
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7184 break;
7185 } else {
7186 txn->flags &= ~TX_CK_MASK;
7187 txn->flags |= TX_CK_DOWN;
7188 }
7189 }
7190 srv = srv->next;
7191 }
7192 }
7193 }
7194}
7195
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7196/* Find the end of a cookie value contained between <s> and <e>. It works the
7197 * same way as with headers above except that the semi-colon also ends a token.
7198 * See RFC2965 for more information. Note that it requires a valid header to
7199 * return a valid result.
7200 */
7201char *find_cookie_value_end(char *s, const char *e)
7202{
7203 int quoted, qdpair;
7204
7205 quoted = qdpair = 0;
7206 for (; s < e; s++) {
7207 if (qdpair) qdpair = 0;
7208 else if (quoted) {
7209 if (*s == '\\') qdpair = 1;
7210 else if (*s == '"') quoted = 0;
7211 }
7212 else if (*s == '"') quoted = 1;
7213 else if (*s == ',' || *s == ';') return s;
7214 }
7215 return s;
7216}
7217
7218/* Delete a value in a header between delimiters <from> and <next> in buffer
7219 * <buf>. The number of characters displaced is returned, and the pointer to
7220 * the first delimiter is updated if required. The function tries as much as
7221 * possible to respect the following principles :
7222 * - replace <from> delimiter by the <next> one unless <from> points to a
7223 * colon, in which case <next> is simply removed
7224 * - set exactly one space character after the new first delimiter, unless
7225 * there are not enough characters in the block being moved to do so.
7226 * - remove unneeded spaces before the previous delimiter and after the new
7227 * one.
7228 *
7229 * It is the caller's responsibility to ensure that :
7230 * - <from> points to a valid delimiter or the colon ;
7231 * - <next> points to a valid delimiter or the final CR/LF ;
7232 * - there are non-space chars before <from> ;
7233 * - there is a CR/LF at or after <next>.
7234 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7235int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7236{
7237 char *prev = *from;
7238
7239 if (*prev == ':') {
7240 /* We're removing the first value, preserve the colon and add a
7241 * space if possible.
7242 */
7243 if (!http_is_crlf[(unsigned char)*next])
7244 next++;
7245 prev++;
7246 if (prev < next)
7247 *prev++ = ' ';
7248
7249 while (http_is_spht[(unsigned char)*next])
7250 next++;
7251 } else {
7252 /* Remove useless spaces before the old delimiter. */
7253 while (http_is_spht[(unsigned char)*(prev-1)])
7254 prev--;
7255 *from = prev;
7256
7257 /* copy the delimiter and if possible a space if we're
7258 * not at the end of the line.
7259 */
7260 if (!http_is_crlf[(unsigned char)*next]) {
7261 *prev++ = *next++;
7262 if (prev + 1 < next)
7263 *prev++ = ' ';
7264 while (http_is_spht[(unsigned char)*next])
7265 next++;
7266 }
7267 }
7268 return buffer_replace2(buf, prev, next, NULL, 0);
7269}
7270
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7271/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7272 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7273 * desirable to call it only when needed. This code is quite complex because
7274 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7275 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7276 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7277void manage_client_side_cookies(struct session *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7278{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7279 struct http_txn *txn = &s->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7280 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7281 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7282 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7283 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7284
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7285 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7286 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7287 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7288
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7289 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7290 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7291 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7292
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7293 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7294 hdr_beg = hdr_next;
7295 hdr_end = hdr_beg + cur_hdr->len;
7296 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7297
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7298 /* We have one full header between hdr_beg and hdr_end, and the
7299 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7300 * "Cookie:" headers.
7301 */
7302
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7303 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7304 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7305 old_idx = cur_idx;
7306 continue;
7307 }
7308
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7309 del_from = NULL; /* nothing to be deleted */
7310 preserve_hdr = 0; /* assume we may kill the whole header */
7311
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7312 /* Now look for cookies. Conforming to RFC2109, we have to support
7313 * attributes whose name begin with a '$', and associate them with
7314 * the right cookie, if we want to delete this cookie.
7315 * So there are 3 cases for each cookie read :
7316 * 1) it's a special attribute, beginning with a '$' : ignore it.
7317 * 2) it's a server id cookie that we *MAY* want to delete : save
7318 * some pointers on it (last semi-colon, beginning of cookie...)
7319 * 3) it's an application cookie : we *MAY* have to delete a previous
7320 * "special" cookie.
7321 * At the end of loop, if a "special" cookie remains, we may have to
7322 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7323 * *MUST* delete it.
7324 *
7325 * Note: RFC2965 is unclear about the processing of spaces around
7326 * the equal sign in the ATTR=VALUE form. A careful inspection of
7327 * the RFC explicitly allows spaces before it, and not within the
7328 * tokens (attrs or values). An inspection of RFC2109 allows that
7329 * too but section 10.1.3 lets one think that spaces may be allowed
7330 * after the equal sign too, resulting in some (rare) buggy
7331 * implementations trying to do that. So let's do what servers do.
7332 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7333 * allowed quoted strings in values, with any possible character
7334 * after a backslash, including control chars and delimitors, which
7335 * causes parsing to become ambiguous. Browsers also allow spaces
7336 * within values even without quotes.
7337 *
7338 * We have to keep multiple pointers in order to support cookie
7339 * removal at the beginning, middle or end of header without
7340 * corrupting the header. All of these headers are valid :
7341 *
7342 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7343 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7344 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7345 * | | | | | | | | |
7346 * | | | | | | | | hdr_end <--+
7347 * | | | | | | | +--> next
7348 * | | | | | | +----> val_end
7349 * | | | | | +-----------> val_beg
7350 * | | | | +--------------> equal
7351 * | | | +----------------> att_end
7352 * | | +---------------------> att_beg
7353 * | +--------------------------> prev
7354 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7355 */
7356
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7357 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7358 /* Iterate through all cookies on this line */
7359
7360 /* find att_beg */
7361 att_beg = prev + 1;
7362 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7363 att_beg++;
7364
7365 /* find att_end : this is the first character after the last non
7366 * space before the equal. It may be equal to hdr_end.
7367 */
7368 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7369
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7370 while (equal < hdr_end) {
7371 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7372 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7373 if (http_is_spht[(unsigned char)*equal++])
7374 continue;
7375 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7376 }
7377
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7378 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7379 * is between <att_beg> and <equal>, both may be identical.
7380 */
7381
7382 /* look for end of cookie if there is an equal sign */
7383 if (equal < hdr_end && *equal == '=') {
7384 /* look for the beginning of the value */
7385 val_beg = equal + 1;
7386 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7387 val_beg++;
7388
7389 /* find the end of the value, respecting quotes */
7390 next = find_cookie_value_end(val_beg, hdr_end);
7391
7392 /* make val_end point to the first white space or delimitor after the value */
7393 val_end = next;
7394 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7395 val_end--;
7396 } else {
7397 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7398 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7399
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7400 /* We have nothing to do with attributes beginning with '$'. However,
7401 * they will automatically be removed if a header before them is removed,
7402 * since they're supposed to be linked together.
7403 */
7404 if (*att_beg == '$')
7405 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7406
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7407 /* Ignore cookies with no equal sign */
7408 if (equal == next) {
7409 /* This is not our cookie, so we must preserve it. But if we already
7410 * scheduled another cookie for removal, we cannot remove the
7411 * complete header, but we can remove the previous block itself.
7412 */
7413 preserve_hdr = 1;
7414 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7415 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7416 val_end += delta;
7417 next += delta;
7418 hdr_end += delta;
7419 hdr_next += delta;
7420 cur_hdr->len += delta;
7421 http_msg_move_end(&txn->req, delta);
7422 prev = del_from;
7423 del_from = NULL;
7424 }
7425 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7426 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7427
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7428 /* if there are spaces around the equal sign, we need to
7429 * strip them otherwise we'll get trouble for cookie captures,
7430 * or even for rewrites. Since this happens extremely rarely,
7431 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7432 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7433 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7434 int stripped_before = 0;
7435 int stripped_after = 0;
7436
7437 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7438 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7439 equal += stripped_before;
7440 val_beg += stripped_before;
7441 }
7442
7443 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7444 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7445 val_beg += stripped_after;
7446 stripped_before += stripped_after;
7447 }
7448
7449 val_end += stripped_before;
7450 next += stripped_before;
7451 hdr_end += stripped_before;
7452 hdr_next += stripped_before;
7453 cur_hdr->len += stripped_before;
7454 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7455 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7456 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7457
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7458 /* First, let's see if we want to capture this cookie. We check
7459 * that we don't already have a client side cookie, because we
7460 * can only capture one. Also as an optimisation, we ignore
7461 * cookies shorter than the declared name.
7462 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7463 if (s->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7464 (val_end - att_beg >= s->fe->capture_namelen) &&
7465 memcmp(att_beg, s->fe->capture_name, s->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7466 int log_len = val_end - att_beg;
7467
7468 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7469 Alert("HTTP logging : out of memory.\n");
7470 } else {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7471 if (log_len > s->fe->capture_len)
7472 log_len = s->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7473 memcpy(txn->cli_cookie, att_beg, log_len);
7474 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7475 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7476 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7477
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7478 /* Persistence cookies in passive, rewrite or insert mode have the
7479 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7480 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7481 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7482 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7483 * For cookies in prefix mode, the form is :
7484 *
7485 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7486 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7487 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7488 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7489 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7490 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7491
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7492 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7493 * have the server ID between val_beg and delim, and the original cookie between
7494 * delim+1 and val_end. Otherwise, delim==val_end :
7495 *
7496 * Cookie: NAME=SRV; # in all but prefix modes
7497 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7498 * | || || | |+-> next
7499 * | || || | +--> val_end
7500 * | || || +---------> delim
7501 * | || |+------------> val_beg
7502 * | || +-------------> att_end = equal
7503 * | |+-----------------> att_beg
7504 * | +------------------> prev
7505 * +-------------------------> hdr_beg
7506 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7507
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7508 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7509 for (delim = val_beg; delim < val_end; delim++)
7510 if (*delim == COOKIE_DELIM)
7511 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7512 } else {
7513 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7514 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7515 /* Now check if the cookie contains a date field, which would
7516 * appear after a vertical bar ('|') just after the server name
7517 * and before the delimiter.
7518 */
7519 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7520 if (vbar1) {
7521 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7522 * right is the last seen date. It is a base64 encoded
7523 * 30-bit value representing the UNIX date since the
7524 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7525 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7526 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7527 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7528 if (val_end - vbar1 >= 5) {
7529 val = b64tos30(vbar1);
7530 if (val > 0)
7531 txn->cookie_last_date = val << 2;
7532 }
7533 /* look for a second vertical bar */
7534 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7535 if (vbar1 && (val_end - vbar1 > 5)) {
7536 val = b64tos30(vbar1 + 1);
7537 if (val > 0)
7538 txn->cookie_first_date = val << 2;
7539 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7540 }
7541 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7542
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7543 /* if the cookie has an expiration date and the proxy wants to check
7544 * it, then we do that now. We first check if the cookie is too old,
7545 * then only if it has expired. We detect strict overflow because the
7546 * time resolution here is not great (4 seconds). Cookies with dates
7547 * in the future are ignored if their offset is beyond one day. This
7548 * allows an admin to fix timezone issues without expiring everyone
7549 * and at the same time avoids keeping unwanted side effects for too
7550 * long.
7551 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7552 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7553 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7554 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7555 txn->flags &= ~TX_CK_MASK;
7556 txn->flags |= TX_CK_OLD;
7557 delim = val_beg; // let's pretend we have not found the cookie
7558 txn->cookie_first_date = 0;
7559 txn->cookie_last_date = 0;
7560 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7561 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7562 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7563 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7564 txn->flags &= ~TX_CK_MASK;
7565 txn->flags |= TX_CK_EXPIRED;
7566 delim = val_beg; // let's pretend we have not found the cookie
7567 txn->cookie_first_date = 0;
7568 txn->cookie_last_date = 0;
7569 }
7570
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7571 /* Here, we'll look for the first running server which supports the cookie.
7572 * This allows to share a same cookie between several servers, for example
7573 * to dedicate backup servers to specific servers only.
7574 * However, to prevent clients from sticking to cookie-less backup server
7575 * when they have incidentely learned an empty cookie, we simply ignore
7576 * empty cookies and mark them as invalid.
7577 * The same behaviour is applied when persistence must be ignored.
7578 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7579 if ((delim == val_beg) || (s->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7580 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7581
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7582 while (srv) {
7583 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7584 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7585 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7586 (s->be->options & PR_O_PERSIST) ||
7587 (s->flags & SN_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7588 /* we found the server and we can use it */
7589 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7590 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7591 s->flags |= SN_DIRECT | SN_ASSIGNED;
7592 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7593 break;
7594 } else {
7595 /* we found a server, but it's down,
7596 * mark it as such and go on in case
7597 * another one is available.
7598 */
7599 txn->flags &= ~TX_CK_MASK;
7600 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7601 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7602 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7603 srv = srv->next;
7604 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7605
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7606 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7607 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7608 txn->flags &= ~TX_CK_MASK;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7609 if ((s->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7610 txn->flags |= TX_CK_UNUSED;
7611 else
7612 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7613 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7614
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7615 /* depending on the cookie mode, we may have to either :
7616 * - delete the complete cookie if we're in insert+indirect mode, so that
7617 * the server never sees it ;
7618 * - remove the server id from the cookie value, and tag the cookie as an
7619 * application cookie so that it does not get accidentely removed later,
7620 * if we're in cookie prefix mode
7621 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7622 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7623 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7624
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7625 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7626 val_end += delta;
7627 next += delta;
7628 hdr_end += delta;
7629 hdr_next += delta;
7630 cur_hdr->len += delta;
7631 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7632
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7633 del_from = NULL;
7634 preserve_hdr = 1; /* we want to keep this cookie */
7635 }
7636 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7637 (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]7638 del_from = prev;
7639 }
7640 } else {
7641 /* This is not our cookie, so we must preserve it. But if we already
7642 * scheduled another cookie for removal, we cannot remove the
7643 * complete header, but we can remove the previous block itself.
7644 */
7645 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7646
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7647 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7648 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7649 if (att_beg >= del_from)
7650 att_beg += delta;
7651 if (att_end >= del_from)
7652 att_end += delta;
7653 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7654 val_end += delta;
7655 next += delta;
7656 hdr_end += delta;
7657 hdr_next += delta;
7658 cur_hdr->len += delta;
7659 http_msg_move_end(&txn->req, delta);
7660 prev = del_from;
7661 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7662 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7663 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7664
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7665 /* Look for the appsession cookie unless persistence must be ignored */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7666 if (!(s->flags & SN_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7667 int cmp_len, value_len;
7668 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7669
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7670 if (s->be->options2 & PR_O2_AS_PFX) {
7671 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
7672 value_begin = att_beg + s->be->appsession_name_len;
7673 value_len = val_end - att_beg - s->be->appsession_name_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7674 } else {
7675 cmp_len = att_end - att_beg;
7676 value_begin = val_beg;
7677 value_len = val_end - val_beg;
7678 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7679
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7680 /* let's see if the cookie is our appcookie */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7681 if (cmp_len == s->be->appsession_name_len &&
7682 memcmp(att_beg, s->be->appsession_name, cmp_len) == 0) {
7683 manage_client_side_appsession(s, value_begin, value_len);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7684 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7685 }
7686
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7687 /* continue with next cookie on this header line */
7688 att_beg = next;
7689 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7690
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7691 /* There are no more cookies on this line.
7692 * We may still have one (or several) marked for deletion at the
7693 * end of the line. We must do this now in two ways :
7694 * - if some cookies must be preserved, we only delete from the
7695 * mark to the end of line ;
7696 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7697 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7698 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7699 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7700 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7701 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7702 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7703 cur_hdr->len += delta;
7704 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7705 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7706
7707 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7708 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7709 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7710 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7711 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7712 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7713 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7714 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7715 }
7716
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7717 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7718 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7719 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7720}
7721
7722
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7723/* Iterate the same filter through all response headers contained in <rtr>.
7724 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7725 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7726int 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]7727{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7728 char *cur_ptr, *cur_end, *cur_next;
7729 int cur_idx, old_idx, last_hdr;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7730 struct http_txn *txn = &s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7731 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7732 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7733
7734 last_hdr = 0;
7735
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7736 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7737 old_idx = 0;
7738
7739 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7740 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7741 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7742 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7743 (exp->action == ACT_ALLOW ||
7744 exp->action == ACT_DENY))
7745 return 0;
7746
7747 cur_idx = txn->hdr_idx.v[old_idx].next;
7748 if (!cur_idx)
7749 break;
7750
7751 cur_hdr = &txn->hdr_idx.v[cur_idx];
7752 cur_ptr = cur_next;
7753 cur_end = cur_ptr + cur_hdr->len;
7754 cur_next = cur_end + cur_hdr->cr + 1;
7755
7756 /* Now we have one header between cur_ptr and cur_end,
7757 * and the next header starts at cur_next.
7758 */
7759
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]7760 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]7761 switch (exp->action) {
7762 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7763 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7764 last_hdr = 1;
7765 break;
7766
7767 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7768 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7769 last_hdr = 1;
7770 break;
7771
7772 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7773 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7774 if (trash.len < 0)
7775 return -1;
7776
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7777 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7778 /* FIXME: if the user adds a newline in the replacement, the
7779 * index will not be recalculated for now, and the new line
7780 * will not be counted as a new header.
7781 */
7782
7783 cur_end += delta;
7784 cur_next += delta;
7785 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7786 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7787 break;
7788
7789 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7790 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7791 cur_next += delta;
7792
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7793 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7794 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7795 txn->hdr_idx.used--;
7796 cur_hdr->len = 0;
7797 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7798 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7799 break;
7800
7801 }
7802 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7803
7804 /* keep the link from this header to next one in case of later
7805 * removal of next header.
7806 */
7807 old_idx = cur_idx;
7808 }
7809 return 0;
7810}
7811
7812
7813/* Apply the filter to the status line in the response buffer <rtr>.
7814 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7815 * or -1 if a replacement resulted in an invalid status line.
7816 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7817int 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]7818{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7819 char *cur_ptr, *cur_end;
7820 int done;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7821 struct http_txn *txn = &s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7822 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7823
7824
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7825 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7826 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7827 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7828 (exp->action == ACT_ALLOW ||
7829 exp->action == ACT_DENY))
7830 return 0;
7831 else if (exp->action == ACT_REMOVE)
7832 return 0;
7833
7834 done = 0;
7835
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7836 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7837 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7838
7839 /* Now we have the status line between cur_ptr and cur_end */
7840
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]7841 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]7842 switch (exp->action) {
7843 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7844 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7845 done = 1;
7846 break;
7847
7848 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7849 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7850 done = 1;
7851 break;
7852
7853 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7854 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7855 if (trash.len < 0)
7856 return -1;
7857
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7858 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7859 /* FIXME: if the user adds a newline in the replacement, the
7860 * index will not be recalculated for now, and the new line
7861 * will not be counted as a new header.
7862 */
7863
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7864 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7865 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7866 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7867 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7868 cur_ptr, cur_end + 1,
7869 NULL, NULL);
7870 if (unlikely(!cur_end))
7871 return -1;
7872
7873 /* we have a full respnse and we know that we have either a CR
7874 * or an LF at <ptr>.
7875 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7876 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]7877 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]7878 /* there is no point trying this regex on headers */
7879 return 1;
7880 }
7881 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7882 return done;
7883}
7884
7885
7886
7887/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7888 * 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]7889 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7890 * unparsable response.
7891 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7892int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7893{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7894 struct http_txn *txn = &s->txn;
7895 struct hdr_exp *exp;
7896
7897 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7898 int ret;
7899
7900 /*
7901 * The interleaving of transformations and verdicts
7902 * makes it difficult to decide to continue or stop
7903 * the evaluation.
7904 */
7905
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7906 if (txn->flags & TX_SVDENY)
7907 break;
7908
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7909 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7910 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7911 exp->action == ACT_PASS)) {
7912 exp = exp->next;
7913 continue;
7914 }
7915
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7916 /* if this filter had a condition, evaluate it now and skip to
7917 * next filter if the condition does not match.
7918 */
7919 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7920 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]7921 ret = acl_pass(ret);
7922 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7923 ret = !ret;
7924 if (!ret)
7925 continue;
7926 }
7927
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7928 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7929 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7930 if (unlikely(ret < 0))
7931 return -1;
7932
7933 if (likely(ret == 0)) {
7934 /* The filter did not match the response, it can be
7935 * iterated through all headers.
7936 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7937 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
7938 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7939 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7940 }
7941 return 0;
7942}
7943
7944
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7945/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7946 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7947 * desirable to call it only when needed. This function is also used when we
7948 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7949 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7950void manage_server_side_cookies(struct session *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7951{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7952 struct http_txn *txn = &s->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7953 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7954 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7955 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7956 char *hdr_beg, *hdr_end, *hdr_next;
7957 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7958
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7959 /* Iterate through the headers.
7960 * we start with the start line.
7961 */
7962 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7963 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7964
7965 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7966 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7967 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7968
7969 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7970 hdr_beg = hdr_next;
7971 hdr_end = hdr_beg + cur_hdr->len;
7972 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7973
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7974 /* We have one full header between hdr_beg and hdr_end, and the
7975 * next header starts at hdr_next. We're only interested in
7976 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7977 */
7978
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7979 is_cookie2 = 0;
7980 prev = hdr_beg + 10;
7981 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7982 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7983 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7984 if (!val) {
7985 old_idx = cur_idx;
7986 continue;
7987 }
7988 is_cookie2 = 1;
7989 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7990 }
7991
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7992 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7993 * <prev> points to the colon.
7994 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7995 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7996
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7997 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7998 * check-cache is enabled) and we are not interested in checking
7999 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]8000 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8001 if (s->be->cookie_name == NULL &&
8002 s->be->appsession_name == NULL &&
8003 s->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8004 return;
8005
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8006 /* OK so now we know we have to process this response cookie.
8007 * The format of the Set-Cookie header is slightly different
8008 * from the format of the Cookie header in that it does not
8009 * support the comma as a cookie delimiter (thus the header
8010 * cannot be folded) because the Expires attribute described in
8011 * the original Netscape's spec may contain an unquoted date
8012 * with a comma inside. We have to live with this because
8013 * many browsers don't support Max-Age and some browsers don't
8014 * support quoted strings. However the Set-Cookie2 header is
8015 * clean.
8016 *
8017 * We have to keep multiple pointers in order to support cookie
8018 * removal at the beginning, middle or end of header without
8019 * corrupting the header (in case of set-cookie2). A special
8020 * pointer, <scav> points to the beginning of the set-cookie-av
8021 * fields after the first semi-colon. The <next> pointer points
8022 * either to the end of line (set-cookie) or next unquoted comma
8023 * (set-cookie2). All of these headers are valid :
8024 *
8025 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8026 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8027 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8028 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8029 * | | | | | | | | | |
8030 * | | | | | | | | +-> next hdr_end <--+
8031 * | | | | | | | +------------> scav
8032 * | | | | | | +--------------> val_end
8033 * | | | | | +--------------------> val_beg
8034 * | | | | +----------------------> equal
8035 * | | | +------------------------> att_end
8036 * | | +----------------------------> att_beg
8037 * | +------------------------------> prev
8038 * +-----------------------------------------> hdr_beg
8039 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8040
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8041 for (; prev < hdr_end; prev = next) {
8042 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8043
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8044 /* find att_beg */
8045 att_beg = prev + 1;
8046 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8047 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8048
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8049 /* find att_end : this is the first character after the last non
8050 * space before the equal. It may be equal to hdr_end.
8051 */
8052 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8053
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8054 while (equal < hdr_end) {
8055 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8056 break;
8057 if (http_is_spht[(unsigned char)*equal++])
8058 continue;
8059 att_end = equal;
8060 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8061
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8062 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8063 * is between <att_beg> and <equal>, both may be identical.
8064 */
8065
8066 /* look for end of cookie if there is an equal sign */
8067 if (equal < hdr_end && *equal == '=') {
8068 /* look for the beginning of the value */
8069 val_beg = equal + 1;
8070 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8071 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8072
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8073 /* find the end of the value, respecting quotes */
8074 next = find_cookie_value_end(val_beg, hdr_end);
8075
8076 /* make val_end point to the first white space or delimitor after the value */
8077 val_end = next;
8078 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8079 val_end--;
8080 } else {
8081 /* <equal> points to next comma, semi-colon or EOL */
8082 val_beg = val_end = next = equal;
8083 }
8084
8085 if (next < hdr_end) {
8086 /* Set-Cookie2 supports multiple cookies, and <next> points to
8087 * a colon or semi-colon before the end. So skip all attr-value
8088 * pairs and look for the next comma. For Set-Cookie, since
8089 * commas are permitted in values, skip to the end.
8090 */
8091 if (is_cookie2)
8092 next = find_hdr_value_end(next, hdr_end);
8093 else
8094 next = hdr_end;
8095 }
8096
8097 /* Now everything is as on the diagram above */
8098
8099 /* Ignore cookies with no equal sign */
8100 if (equal == val_end)
8101 continue;
8102
8103 /* If there are spaces around the equal sign, we need to
8104 * strip them otherwise we'll get trouble for cookie captures,
8105 * or even for rewrites. Since this happens extremely rarely,
8106 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8107 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8108 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8109 int stripped_before = 0;
8110 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8111
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8112 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8113 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8114 equal += stripped_before;
8115 val_beg += stripped_before;
8116 }
8117
8118 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8119 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8120 val_beg += stripped_after;
8121 stripped_before += stripped_after;
8122 }
8123
8124 val_end += stripped_before;
8125 next += stripped_before;
8126 hdr_end += stripped_before;
8127 hdr_next += stripped_before;
8128 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8129 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8130 }
8131
8132 /* First, let's see if we want to capture this cookie. We check
8133 * that we don't already have a server side cookie, because we
8134 * can only capture one. Also as an optimisation, we ignore
8135 * cookies shorter than the declared name.
8136 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8137 if (s->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8138 txn->srv_cookie == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8139 (val_end - att_beg >= s->fe->capture_namelen) &&
8140 memcmp(att_beg, s->fe->capture_name, s->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8141 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8142 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8143 Alert("HTTP logging : out of memory.\n");
8144 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8145 else {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8146 if (log_len > s->fe->capture_len)
8147 log_len = s->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8148 memcpy(txn->srv_cookie, att_beg, log_len);
8149 txn->srv_cookie[log_len] = 0;
8150 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8151 }
8152
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8153 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8154 /* now check if we need to process it for persistence */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8155 if (!(s->flags & SN_IGNORE_PRST) &&
8156 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8157 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8158 /* assume passive cookie by default */
8159 txn->flags &= ~TX_SCK_MASK;
8160 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8161
8162 /* If the cookie is in insert mode on a known server, we'll delete
8163 * this occurrence because we'll insert another one later.
8164 * 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]8165 * a direct access.
8166 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8167 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8168 /* The "preserve" flag was set, we don't want to touch the
8169 * server's cookie.
8170 */
8171 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8172 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
8173 ((s->flags & SN_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8174 /* this cookie must be deleted */
8175 if (*prev == ':' && next == hdr_end) {
8176 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8177 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8178 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8179 txn->hdr_idx.used--;
8180 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8181 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8182 hdr_next += delta;
8183 http_msg_move_end(&txn->rsp, delta);
8184 /* note: while both invalid now, <next> and <hdr_end>
8185 * are still equal, so the for() will stop as expected.
8186 */
8187 } else {
8188 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8189 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8190 next = prev;
8191 hdr_end += delta;
8192 hdr_next += delta;
8193 cur_hdr->len += delta;
8194 http_msg_move_end(&txn->rsp, delta);
8195 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8196 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8197 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8198 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8199 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8200 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8201 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8202 * with this server since we know it.
8203 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8204 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8205 next += delta;
8206 hdr_end += delta;
8207 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8208 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8209 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8210
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8211 txn->flags &= ~TX_SCK_MASK;
8212 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8213 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8214 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8215 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8216 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8217 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8218 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8219 next += delta;
8220 hdr_end += delta;
8221 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8222 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8223 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8224
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8225 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8226 txn->flags &= ~TX_SCK_MASK;
8227 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8228 }
8229 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]8230 /* 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]8231 else if (!(s->flags & SN_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8232 int cmp_len, value_len;
8233 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8234
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8235 if (s->be->options2 & PR_O2_AS_PFX) {
8236 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
8237 value_begin = att_beg + s->be->appsession_name_len;
8238 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]8239 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8240 cmp_len = att_end - att_beg;
8241 value_begin = val_beg;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8242 value_len = MIN(s->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8243 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8244
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8245 if ((cmp_len == s->be->appsession_name_len) &&
8246 (memcmp(att_beg, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8247 /* free a possibly previously allocated memory */
8248 pool_free2(apools.sessid, txn->sessid);
8249
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8250 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8251 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8252 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8253 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]8254 return;
8255 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8256 memcpy(txn->sessid, value_begin, value_len);
8257 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8258 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8259 }
8260 /* that's done for this cookie, check the next one on the same
8261 * line when next != hdr_end (only if is_cookie2).
8262 */
8263 }
8264 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8265 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8266 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8267
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8268 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8269 appsess *asession = NULL;
8270 /* only do insert, if lookup fails */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8271 asession = appsession_hash_lookup(&(s->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8272 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]8273 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8274 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
8275 Alert("Not enough Memory process_srv():asession:calloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8276 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8277 return;
8278 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8279 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
8280
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8281 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
8282 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8283 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8284 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8285 return;
8286 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8287 memcpy(asession->sessid, txn->sessid, s->be->appsession_len);
8288 asession->sessid[s->be->appsession_len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8289
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8290 server_id_len = strlen(objt_server(s->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8291 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8292 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8293 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8294 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8295 return;
8296 }
8297 asession->serverid[0] = '\0';
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8298 memcpy(asession->serverid, objt_server(s->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8299
8300 asession->request_count = 0;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8301 appsession_hash_insert(&(s->be->htbl_proxy), asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8302 }
8303
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8304 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8305 asession->request_count++;
8306 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8307}
8308
8309
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8310/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8311 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8312 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8313void check_response_for_cacheability(struct session *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8314{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8315 struct http_txn *txn = &s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8316 char *p1, *p2;
8317
8318 char *cur_ptr, *cur_end, *cur_next;
8319 int cur_idx;
8320
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8321 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8322 return;
8323
8324 /* Iterate through the headers.
8325 * we start with the start line.
8326 */
8327 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8328 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8329
8330 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8331 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8332 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8333
8334 cur_hdr = &txn->hdr_idx.v[cur_idx];
8335 cur_ptr = cur_next;
8336 cur_end = cur_ptr + cur_hdr->len;
8337 cur_next = cur_end + cur_hdr->cr + 1;
8338
8339 /* We have one full header between cur_ptr and cur_end, and the
8340 * next header starts at cur_next. We're only interested in
8341 * "Cookie:" headers.
8342 */
8343
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8344 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8345 if (val) {
8346 if ((cur_end - (cur_ptr + val) >= 8) &&
8347 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8348 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8349 return;
8350 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8351 }
8352
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8353 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8354 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8355 continue;
8356
8357 /* OK, right now we know we have a cache-control header at cur_ptr */
8358
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8359 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8360
8361 if (p1 >= cur_end) /* no more info */
8362 continue;
8363
8364 /* p1 is at the beginning of the value */
8365 p2 = p1;
8366
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8367 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8368 p2++;
8369
8370 /* we have a complete value between p1 and p2 */
8371 if (p2 < cur_end && *p2 == '=') {
8372 /* we have something of the form no-cache="set-cookie" */
8373 if ((cur_end - p1 >= 21) &&
8374 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8375 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8376 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8377 continue;
8378 }
8379
8380 /* OK, so we know that either p2 points to the end of string or to a comma */
8381 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8382 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8383 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8384 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8385 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8386 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8387 return;
8388 }
8389
8390 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8391 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8392 continue;
8393 }
8394 }
8395}
8396
8397
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8398/*
8399 * Try to retrieve a known appsession in the URI, then the associated server.
8400 * If the server is found, it's assigned to the session.
8401 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8402void get_srv_from_appsession(struct session *s, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8403{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8404 char *end_params, *first_param, *cur_param, *next_param;
8405 char separator;
8406 int value_len;
8407
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8408 int mode = s->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8409
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8410 if (s->be->appsession_name == NULL ||
8411 (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]8412 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8413 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8414
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8415 first_param = NULL;
8416 switch (mode) {
8417 case PR_O2_AS_M_PP:
8418 first_param = memchr(begin, ';', len);
8419 break;
8420 case PR_O2_AS_M_QS:
8421 first_param = memchr(begin, '?', len);
8422 break;
8423 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8424
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8425 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8426 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8427 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8428
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8429 switch (mode) {
8430 case PR_O2_AS_M_PP:
8431 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
8432 end_params = (char *) begin + len;
8433 }
8434 separator = ';';
8435 break;
8436 case PR_O2_AS_M_QS:
8437 end_params = (char *) begin + len;
8438 separator = '&';
8439 break;
8440 default:
8441 /* unknown mode, shouldn't happen */
8442 return;
8443 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8444
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8445 cur_param = next_param = end_params;
8446 while (cur_param > first_param) {
8447 cur_param--;
8448 if ((cur_param[0] == separator) || (cur_param == first_param)) {
8449 /* let's see if this is the appsession parameter */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8450 if ((cur_param + s->be->appsession_name_len + 1 < next_param) &&
8451 ((s->be->options2 & PR_O2_AS_PFX) || cur_param[s->be->appsession_name_len + 1] == '=') &&
8452 (strncasecmp(cur_param + 1, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8453 /* Cool... it's the right one */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8454 cur_param += s->be->appsession_name_len + (s->be->options2 & PR_O2_AS_PFX ? 1 : 2);
8455 value_len = MIN(s->be->appsession_len, next_param - cur_param);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8456 if (value_len > 0) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8457 manage_client_side_appsession(s, cur_param, value_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8458 }
8459 break;
8460 }
8461 next_param = cur_param;
8462 }
8463 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8464#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]8465 Alert("get_srv_from_appsession\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8466 appsession_hash_dump(&(s->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8467#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8468}
8469
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8470/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8471 * 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]8472 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8473 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8474 * 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]8475 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8476 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8477 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8478 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8479int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8480{
8481 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8482 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8483 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8484
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8485 if (!uri_auth)
8486 return 0;
8487
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8488 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]8489 return 0;
8490
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8491 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8492 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8493 return 0;
8494
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8495 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8496 return 0;
8497
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8498 return 1;
8499}
8500
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8501/*
8502 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8503 * By default it tries to report the error position as msg->err_pos. However if
8504 * this one is not set, it will then report msg->next, which is the last known
8505 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8506 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8507 */
8508void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8509 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8510 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8511{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8512 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8513 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8514
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8515 es->len = MIN(chn->buf->i, sizeof(es->buf));
8516 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8517 len1 = MIN(len1, es->len);
8518 len2 = es->len - len1; /* remaining data if buffer wraps */
8519
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8520 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8521 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8522 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8523
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8524 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8525 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8526 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8527 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8528
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8529 es->when = date; // user-visible date
8530 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8531 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8532 es->oe = other_end;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8533 if (objt_conn(s->req->prod->end))
8534 es->src = __objt_conn(s->req->prod->end)->addr.from;
8535 else
8536 memset(&es->src, 0, sizeof(es->src));
8537
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8538 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8539 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8540 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8541 es->s_flags = s->flags;
8542 es->t_flags = s->txn.flags;
8543 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8544 es->b_out = chn->buf->o;
8545 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8546 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8547 es->m_clen = msg->chunk_len;
8548 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8549}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8550
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8551/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8552 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8553 * performed over the whole headers. Otherwise it must contain a valid header
8554 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8555 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8556 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8557 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8558 * -1. The value fetch stops at commas, so this function is suited for use with
8559 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8560 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8561 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8562unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8563 struct hdr_idx *idx, int occ,
8564 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8565{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8566 struct hdr_ctx local_ctx;
8567 char *ptr_hist[MAX_HDR_HISTORY];
8568 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8569 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8570 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8571
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8572 if (!ctx) {
8573 local_ctx.idx = 0;
8574 ctx = &local_ctx;
8575 }
8576
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8577 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8578 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8579 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8580 occ--;
8581 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8582 *vptr = ctx->line + ctx->val;
8583 *vlen = ctx->vlen;
8584 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8585 }
8586 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8587 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8588 }
8589
8590 /* negative occurrence, we scan all the list then walk back */
8591 if (-occ > MAX_HDR_HISTORY)
8592 return 0;
8593
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8594 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8595 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8596 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8597 len_hist[hist_ptr] = ctx->vlen;
8598 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8599 hist_ptr = 0;
8600 found++;
8601 }
8602 if (-occ > found)
8603 return 0;
8604 /* 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]8605 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8606 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8607 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8608 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8609 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8610 if (hist_ptr >= MAX_HDR_HISTORY)
8611 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8612 *vptr = ptr_hist[hist_ptr];
8613 *vlen = len_hist[hist_ptr];
8614 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8615}
8616
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8617/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8618 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8619 * performed over the whole headers. Otherwise it must contain a valid header
8620 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8621 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8622 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8623 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8624 * -1. This function differs from http_get_hdr() in that it only returns full
8625 * line header values and does not stop at commas.
8626 * The return value is 0 if nothing was found, or non-zero otherwise.
8627 */
8628unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8629 struct hdr_idx *idx, int occ,
8630 struct hdr_ctx *ctx, char **vptr, int *vlen)
8631{
8632 struct hdr_ctx local_ctx;
8633 char *ptr_hist[MAX_HDR_HISTORY];
8634 int len_hist[MAX_HDR_HISTORY];
8635 unsigned int hist_ptr;
8636 int found;
8637
8638 if (!ctx) {
8639 local_ctx.idx = 0;
8640 ctx = &local_ctx;
8641 }
8642
8643 if (occ >= 0) {
8644 /* search from the beginning */
8645 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8646 occ--;
8647 if (occ <= 0) {
8648 *vptr = ctx->line + ctx->val;
8649 *vlen = ctx->vlen;
8650 return 1;
8651 }
8652 }
8653 return 0;
8654 }
8655
8656 /* negative occurrence, we scan all the list then walk back */
8657 if (-occ > MAX_HDR_HISTORY)
8658 return 0;
8659
8660 found = hist_ptr = 0;
8661 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8662 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8663 len_hist[hist_ptr] = ctx->vlen;
8664 if (++hist_ptr >= MAX_HDR_HISTORY)
8665 hist_ptr = 0;
8666 found++;
8667 }
8668 if (-occ > found)
8669 return 0;
8670 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8671 * find occurrence -occ, so we have to check [hist_ptr+occ].
8672 */
8673 hist_ptr += occ;
8674 if (hist_ptr >= MAX_HDR_HISTORY)
8675 hist_ptr -= MAX_HDR_HISTORY;
8676 *vptr = ptr_hist[hist_ptr];
8677 *vlen = len_hist[hist_ptr];
8678 return 1;
8679}
8680
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8681/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8682 * Print a debug line with a header. Always stop at the first CR or LF char,
8683 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8684 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8685 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8686void debug_hdr(const char *dir, struct session *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8687{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8688 int max;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8689 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8690 dir,
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8691 objt_conn(s->req->prod->end) ? (unsigned short)objt_conn(s->req->prod->end)->t.sock.fd : -1,
8692 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]8693
8694 for (max = 0; start + max < end; max++)
8695 if (start[max] == '\r' || start[max] == '\n')
8696 break;
8697
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8698 UBOUND(max, trash.size - trash.len - 3);
8699 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8700 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8701 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8702}
8703
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8704/*
8705 * Initialize a new HTTP transaction for session <s>. It is assumed that all
8706 * the required fields are properly allocated and that we only need to (re)init
8707 * them. This should be used before processing any new request.
8708 */
8709void http_init_txn(struct session *s)
8710{
8711 struct http_txn *txn = &s->txn;
8712 struct proxy *fe = s->fe;
8713
8714 txn->flags = 0;
8715 txn->status = -1;
8716
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8717 txn->cookie_first_date = 0;
8718 txn->cookie_last_date = 0;
8719
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8720 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8721 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8722 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8723 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8724 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8725 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8726 txn->req.chunk_len = 0LL;
8727 txn->req.body_len = 0LL;
8728 txn->rsp.chunk_len = 0LL;
8729 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8730 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8731 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8732 txn->req.chn = s->req;
8733 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8734
8735 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8736
8737 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8738 if (fe->options2 & PR_O2_REQBUG_OK)
8739 txn->req.err_pos = -1; /* let buggy requests pass */
8740
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8741 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8742 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8743
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8744 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8745 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8746
8747 if (txn->hdr_idx.v)
8748 hdr_idx_init(&txn->hdr_idx);
8749}
8750
8751/* to be used at the end of a transaction */
8752void http_end_txn(struct session *s)
8753{
8754 struct http_txn *txn = &s->txn;
8755
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]8756 /* release any possible compression context */
8757 if (s->flags & SN_COMP_READY)
8758 s->comp_algo->end(&s->comp_ctx);
8759 s->comp_algo = NULL;
8760 s->flags &= ~SN_COMP_READY;
8761
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8762 /* these ones will have been dynamically allocated */
8763 pool_free2(pool2_requri, txn->uri);
8764 pool_free2(pool2_capture, txn->cli_cookie);
8765 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8766 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8767 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8768
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8769 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8770 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8771 txn->uri = NULL;
8772 txn->srv_cookie = NULL;
8773 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8774
8775 if (txn->req.cap) {
8776 struct cap_hdr *h;
8777 for (h = s->fe->req_cap; h; h = h->next)
8778 pool_free2(h->pool, txn->req.cap[h->index]);
8779 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8780 }
8781
8782 if (txn->rsp.cap) {
8783 struct cap_hdr *h;
8784 for (h = s->fe->rsp_cap; h; h = h->next)
8785 pool_free2(h->pool, txn->rsp.cap[h->index]);
8786 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8787 }
8788
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8789}
8790
8791/* to be used at the end of a transaction to prepare a new one */
8792void http_reset_txn(struct session *s)
8793{
8794 http_end_txn(s);
8795 http_init_txn(s);
8796
8797 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8798 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8799 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8800 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8801 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8802 /* re-init store persistence */
8803 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8804 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8805
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8806 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8807
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8808 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8809
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8810 /* We must trim any excess data from the response buffer, because we
8811 * may have blocked an invalid response from a server that we don't
8812 * want to accidentely forward once we disable the analysers, nor do
8813 * we want those data to come along with next response. A typical
8814 * example of such data would be from a buggy server responding to
8815 * a HEAD with some data, or sending more than the advertised
8816 * content-length.
8817 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8818 if (unlikely(s->rep->buf->i))
8819 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8820
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8821 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8822 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8823
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8824 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8825 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8826
8827 s->req->rex = TICK_ETERNITY;
8828 s->req->wex = TICK_ETERNITY;
8829 s->req->analyse_exp = TICK_ETERNITY;
8830 s->rep->rex = TICK_ETERNITY;
8831 s->rep->wex = TICK_ETERNITY;
8832 s->rep->analyse_exp = TICK_ETERNITY;
8833}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8834
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8835void free_http_res_rules(struct list *r)
8836{
8837 struct http_res_rule *tr, *pr;
8838
8839 list_for_each_entry_safe(pr, tr, r, list) {
8840 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8841 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8842 free(pr);
8843 }
8844}
8845
8846void free_http_req_rules(struct list *r)
8847{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8848 struct http_req_rule *tr, *pr;
8849
8850 list_for_each_entry_safe(pr, tr, r, list) {
8851 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8852 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8853 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8854
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8855 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8856 free(pr);
8857 }
8858}
8859
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8860/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8861struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8862{
8863 struct http_req_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]8864 struct http_req_action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8865 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8866 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8867
8868 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8869 if (!rule) {
8870 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8871 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8872 }
8873
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8874 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8875 rule->action = HTTP_REQ_ACT_ALLOW;
8876 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]8877 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8878 rule->action = HTTP_REQ_ACT_DENY;
8879 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8880 } else if (!strcmp(args[0], "tarpit")) {
8881 rule->action = HTTP_REQ_ACT_TARPIT;
8882 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8883 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8884 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8885 cur_arg = 1;
8886
8887 while(*args[cur_arg]) {
8888 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8889 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8890 cur_arg+=2;
8891 continue;
8892 } else
8893 break;
8894 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8895 } else if (!strcmp(args[0], "set-nice")) {
8896 rule->action = HTTP_REQ_ACT_SET_NICE;
8897 cur_arg = 1;
8898
8899 if (!*args[cur_arg] ||
8900 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8901 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8902 file, linenum, args[0]);
8903 goto out_err;
8904 }
8905 rule->arg.nice = atoi(args[cur_arg]);
8906 if (rule->arg.nice < -1024)
8907 rule->arg.nice = -1024;
8908 else if (rule->arg.nice > 1024)
8909 rule->arg.nice = 1024;
8910 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8911 } else if (!strcmp(args[0], "set-tos")) {
8912#ifdef IP_TOS
8913 char *err;
8914 rule->action = HTTP_REQ_ACT_SET_TOS;
8915 cur_arg = 1;
8916
8917 if (!*args[cur_arg] ||
8918 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8919 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8920 file, linenum, args[0]);
8921 goto out_err;
8922 }
8923
8924 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8925 if (err && *err != '\0') {
8926 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8927 file, linenum, err, args[0]);
8928 goto out_err;
8929 }
8930 cur_arg++;
8931#else
8932 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8933 goto out_err;
8934#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8935 } else if (!strcmp(args[0], "set-mark")) {
8936#ifdef SO_MARK
8937 char *err;
8938 rule->action = HTTP_REQ_ACT_SET_MARK;
8939 cur_arg = 1;
8940
8941 if (!*args[cur_arg] ||
8942 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8943 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8944 file, linenum, args[0]);
8945 goto out_err;
8946 }
8947
8948 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8949 if (err && *err != '\0') {
8950 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8951 file, linenum, err, args[0]);
8952 goto out_err;
8953 }
8954 cur_arg++;
8955 global.last_checks |= LSTCHK_NETADM;
8956#else
8957 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8958 goto out_err;
8959#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8960 } else if (!strcmp(args[0], "set-log-level")) {
8961 rule->action = HTTP_REQ_ACT_SET_LOGL;
8962 cur_arg = 1;
8963
8964 if (!*args[cur_arg] ||
8965 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8966 bad_log_level:
8967 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8968 file, linenum, args[0]);
8969 goto out_err;
8970 }
8971 if (strcmp(args[cur_arg], "silent") == 0)
8972 rule->arg.loglevel = -1;
8973 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8974 goto bad_log_level;
8975 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8976 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8977 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8978 cur_arg = 1;
8979
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8980 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8981 (*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]8982 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8983 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8984 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8985 }
8986
8987 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8988 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8989 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8990
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8991 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8992 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]8993 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8994 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8995 free(proxy->conf.lfs_file);
8996 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8997 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8998 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]8999 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
9000 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]9001 cur_arg = 1;
9002
9003 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann8f249f42014-06-24 11:10:00 +0200[diff] [blame]9004 (*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]9005 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
9006 file, linenum, args[0]);
9007 goto out_err;
9008 }
9009
9010 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9011 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9012 LIST_INIT(&rule->arg.hdr_add.fmt);
9013
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9014 error = NULL;
9015 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9016 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9017 args[cur_arg + 1], error);
9018 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9019 goto out_err;
9020 }
9021
9022 proxy->conf.args.ctx = ARGC_HRQ;
9023 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9024 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9025 file, linenum);
9026
9027 free(proxy->conf.lfs_file);
9028 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9029 proxy->conf.lfs_line = proxy->conf.args.line;
9030 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9031 } else if (strcmp(args[0], "del-header") == 0) {
9032 rule->action = HTTP_REQ_ACT_DEL_HDR;
9033 cur_arg = 1;
9034
9035 if (!*args[cur_arg] ||
9036 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9037 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9038 file, linenum, args[0]);
9039 goto out_err;
9040 }
9041
9042 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9043 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9044
9045 proxy->conf.args.ctx = ARGC_HRQ;
9046 free(proxy->conf.lfs_file);
9047 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9048 proxy->conf.lfs_line = proxy->conf.args.line;
9049 cur_arg += 1;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9050 } else if (strcmp(args[0], "redirect") == 0) {
9051 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9052 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9053
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9054 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]9055 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9056 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9057 goto out_err;
9058 }
9059
9060 /* this redirect rule might already contain a parsed condition which
9061 * we'll pass to the http-request rule.
9062 */
9063 rule->action = HTTP_REQ_ACT_REDIR;
9064 rule->arg.redir = redir;
9065 rule->cond = redir->cond;
9066 redir->cond = NULL;
9067 cur_arg = 2;
9068 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9069 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9070 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9071 rule->action = HTTP_REQ_ACT_ADD_ACL;
9072 /*
9073 * '+ 8' for 'add-acl('
9074 * '- 9' for 'add-acl(' + trailing ')'
9075 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9076 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9077
9078 cur_arg = 1;
9079
9080 if (!*args[cur_arg] ||
9081 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9082 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9083 file, linenum, args[0]);
9084 goto out_err;
9085 }
9086
9087 LIST_INIT(&rule->arg.map.key);
9088 proxy->conf.args.ctx = ARGC_HRQ;
9089 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9090 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9091 file, linenum);
9092 free(proxy->conf.lfs_file);
9093 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9094 proxy->conf.lfs_line = proxy->conf.args.line;
9095 cur_arg += 1;
9096 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9097 /* http-request del-acl(<reference (acl name)>) <key pattern> */
9098 rule->action = HTTP_REQ_ACT_DEL_ACL;
9099 /*
9100 * '+ 8' for 'del-acl('
9101 * '- 9' for 'del-acl(' + trailing ')'
9102 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9103 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9104
9105 cur_arg = 1;
9106
9107 if (!*args[cur_arg] ||
9108 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9109 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9110 file, linenum, args[0]);
9111 goto out_err;
9112 }
9113
9114 LIST_INIT(&rule->arg.map.key);
9115 proxy->conf.args.ctx = ARGC_HRQ;
9116 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9117 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9118 file, linenum);
9119 free(proxy->conf.lfs_file);
9120 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9121 proxy->conf.lfs_line = proxy->conf.args.line;
9122 cur_arg += 1;
9123 } else if (strncmp(args[0], "del-map", 7) == 0) {
9124 /* http-request del-map(<reference (map name)>) <key pattern> */
9125 rule->action = HTTP_REQ_ACT_DEL_MAP;
9126 /*
9127 * '+ 8' for 'del-map('
9128 * '- 9' for 'del-map(' + trailing ')'
9129 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9130 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9131
9132 cur_arg = 1;
9133
9134 if (!*args[cur_arg] ||
9135 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9136 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9137 file, linenum, args[0]);
9138 goto out_err;
9139 }
9140
9141 LIST_INIT(&rule->arg.map.key);
9142 proxy->conf.args.ctx = ARGC_HRQ;
9143 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9144 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9145 file, linenum);
9146 free(proxy->conf.lfs_file);
9147 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9148 proxy->conf.lfs_line = proxy->conf.args.line;
9149 cur_arg += 1;
9150 } else if (strncmp(args[0], "set-map", 7) == 0) {
9151 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
9152 rule->action = HTTP_REQ_ACT_SET_MAP;
9153 /*
9154 * '+ 8' for 'set-map('
9155 * '- 9' for 'set-map(' + trailing ')'
9156 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9157 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9158
9159 cur_arg = 1;
9160
9161 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9162 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9163 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9164 file, linenum, args[0]);
9165 goto out_err;
9166 }
9167
9168 LIST_INIT(&rule->arg.map.key);
9169 LIST_INIT(&rule->arg.map.value);
9170 proxy->conf.args.ctx = ARGC_HRQ;
9171
9172 /* key pattern */
9173 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9174 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9175 file, linenum);
9176
9177 /* value pattern */
9178 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9179 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9180 file, linenum);
9181 free(proxy->conf.lfs_file);
9182 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9183 proxy->conf.lfs_line = proxy->conf.args.line;
9184
9185 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9186 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9187 char *errmsg = NULL;
9188 cur_arg = 1;
9189 /* try in the module list */
9190 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9191 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9192 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9193 free(errmsg);
9194 goto out_err;
9195 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9196 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9197 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]9198 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9199 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9200 }
9201
9202 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9203 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9204 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9205
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9206 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9207 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9208 file, linenum, args[0], errmsg);
9209 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9210 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9211 }
9212 rule->cond = cond;
9213 }
9214 else if (*args[cur_arg]) {
9215 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9216 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9217 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9218 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9219 }
9220
9221 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9222 out_err:
9223 free(rule);
9224 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9225}
9226
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9227/* parse an "http-respose" rule */
9228struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9229{
9230 struct http_res_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9231 struct http_res_action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9232 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9233 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9234
9235 rule = calloc(1, sizeof(*rule));
9236 if (!rule) {
9237 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9238 goto out_err;
9239 }
9240
9241 if (!strcmp(args[0], "allow")) {
9242 rule->action = HTTP_RES_ACT_ALLOW;
9243 cur_arg = 1;
9244 } else if (!strcmp(args[0], "deny")) {
9245 rule->action = HTTP_RES_ACT_DENY;
9246 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9247 } else if (!strcmp(args[0], "set-nice")) {
9248 rule->action = HTTP_RES_ACT_SET_NICE;
9249 cur_arg = 1;
9250
9251 if (!*args[cur_arg] ||
9252 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9253 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9254 file, linenum, args[0]);
9255 goto out_err;
9256 }
9257 rule->arg.nice = atoi(args[cur_arg]);
9258 if (rule->arg.nice < -1024)
9259 rule->arg.nice = -1024;
9260 else if (rule->arg.nice > 1024)
9261 rule->arg.nice = 1024;
9262 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9263 } else if (!strcmp(args[0], "set-tos")) {
9264#ifdef IP_TOS
9265 char *err;
9266 rule->action = HTTP_RES_ACT_SET_TOS;
9267 cur_arg = 1;
9268
9269 if (!*args[cur_arg] ||
9270 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9271 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9272 file, linenum, args[0]);
9273 goto out_err;
9274 }
9275
9276 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9277 if (err && *err != '\0') {
9278 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9279 file, linenum, err, args[0]);
9280 goto out_err;
9281 }
9282 cur_arg++;
9283#else
9284 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9285 goto out_err;
9286#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9287 } else if (!strcmp(args[0], "set-mark")) {
9288#ifdef SO_MARK
9289 char *err;
9290 rule->action = HTTP_RES_ACT_SET_MARK;
9291 cur_arg = 1;
9292
9293 if (!*args[cur_arg] ||
9294 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9295 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9296 file, linenum, args[0]);
9297 goto out_err;
9298 }
9299
9300 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9301 if (err && *err != '\0') {
9302 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9303 file, linenum, err, args[0]);
9304 goto out_err;
9305 }
9306 cur_arg++;
9307 global.last_checks |= LSTCHK_NETADM;
9308#else
9309 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9310 goto out_err;
9311#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9312 } else if (!strcmp(args[0], "set-log-level")) {
9313 rule->action = HTTP_RES_ACT_SET_LOGL;
9314 cur_arg = 1;
9315
9316 if (!*args[cur_arg] ||
9317 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9318 bad_log_level:
9319 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9320 file, linenum, args[0]);
9321 goto out_err;
9322 }
9323 if (strcmp(args[cur_arg], "silent") == 0)
9324 rule->arg.loglevel = -1;
9325 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9326 goto bad_log_level;
9327 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9328 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9329 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
9330 cur_arg = 1;
9331
9332 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9333 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9334 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9335 file, linenum, args[0]);
9336 goto out_err;
9337 }
9338
9339 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9340 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9341 LIST_INIT(&rule->arg.hdr_add.fmt);
9342
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9343 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9344 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]9345 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9346 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9347 free(proxy->conf.lfs_file);
9348 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9349 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9350 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9351 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9352 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]9353 cur_arg = 1;
9354
9355 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmanna772b942014-08-08 17:29:06 +0200[diff] [blame]9356 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9357 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9358 file, linenum, args[0]);
9359 goto out_err;
9360 }
9361
9362 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9363 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9364 LIST_INIT(&rule->arg.hdr_add.fmt);
9365
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9366 error = NULL;
9367 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9368 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9369 args[cur_arg + 1], error);
9370 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9371 goto out_err;
9372 }
9373
9374 proxy->conf.args.ctx = ARGC_HRQ;
9375 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9376 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9377 file, linenum);
9378
9379 free(proxy->conf.lfs_file);
9380 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9381 proxy->conf.lfs_line = proxy->conf.args.line;
9382 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9383 } else if (strcmp(args[0], "del-header") == 0) {
9384 rule->action = HTTP_RES_ACT_DEL_HDR;
9385 cur_arg = 1;
9386
9387 if (!*args[cur_arg] ||
9388 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9389 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9390 file, linenum, args[0]);
9391 goto out_err;
9392 }
9393
9394 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9395 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9396
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9397 proxy->conf.args.ctx = ARGC_HRS;
9398 free(proxy->conf.lfs_file);
9399 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9400 proxy->conf.lfs_line = proxy->conf.args.line;
9401 cur_arg += 1;
9402 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9403 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9404 rule->action = HTTP_RES_ACT_ADD_ACL;
9405 /*
9406 * '+ 8' for 'add-acl('
9407 * '- 9' for 'add-acl(' + trailing ')'
9408 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9409 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9410
9411 cur_arg = 1;
9412
9413 if (!*args[cur_arg] ||
9414 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9415 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9416 file, linenum, args[0]);
9417 goto out_err;
9418 }
9419
9420 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9421 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9422 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9423 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9424 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9425 free(proxy->conf.lfs_file);
9426 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9427 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9428
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9429 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9430 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9431 /* http-response del-acl(<reference (acl name)>) <key pattern> */
9432 rule->action = HTTP_RES_ACT_DEL_ACL;
9433 /*
9434 * '+ 8' for 'del-acl('
9435 * '- 9' for 'del-acl(' + trailing ')'
9436 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9437 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9438
9439 cur_arg = 1;
9440
9441 if (!*args[cur_arg] ||
9442 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9443 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9444 file, linenum, args[0]);
9445 goto out_err;
9446 }
9447
9448 LIST_INIT(&rule->arg.map.key);
9449 proxy->conf.args.ctx = ARGC_HRS;
9450 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9451 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9452 file, linenum);
9453 free(proxy->conf.lfs_file);
9454 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9455 proxy->conf.lfs_line = proxy->conf.args.line;
9456 cur_arg += 1;
9457 } else if (strncmp(args[0], "del-map", 7) == 0) {
9458 /* http-response del-map(<reference (map name)>) <key pattern> */
9459 rule->action = HTTP_RES_ACT_DEL_MAP;
9460 /*
9461 * '+ 8' for 'del-map('
9462 * '- 9' for 'del-map(' + trailing ')'
9463 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9464 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9465
9466 cur_arg = 1;
9467
9468 if (!*args[cur_arg] ||
9469 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9470 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9471 file, linenum, args[0]);
9472 goto out_err;
9473 }
9474
9475 LIST_INIT(&rule->arg.map.key);
9476 proxy->conf.args.ctx = ARGC_HRS;
9477 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9478 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9479 file, linenum);
9480 free(proxy->conf.lfs_file);
9481 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9482 proxy->conf.lfs_line = proxy->conf.args.line;
9483 cur_arg += 1;
9484 } else if (strncmp(args[0], "set-map", 7) == 0) {
9485 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
9486 rule->action = HTTP_RES_ACT_SET_MAP;
9487 /*
9488 * '+ 8' for 'set-map('
9489 * '- 9' for 'set-map(' + trailing ')'
9490 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9491 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9492
9493 cur_arg = 1;
9494
9495 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9496 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9497 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9498 file, linenum, args[0]);
9499 goto out_err;
9500 }
9501
9502 LIST_INIT(&rule->arg.map.key);
9503 LIST_INIT(&rule->arg.map.value);
9504
9505 proxy->conf.args.ctx = ARGC_HRS;
9506
9507 /* key pattern */
9508 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9509 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9510 file, linenum);
9511
9512 /* value pattern */
9513 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9514 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9515 file, linenum);
9516
9517 free(proxy->conf.lfs_file);
9518 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9519 proxy->conf.lfs_line = proxy->conf.args.line;
9520
9521 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9522 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9523 char *errmsg = NULL;
9524 cur_arg = 1;
9525 /* try in the module list */
9526 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9527 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9528 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9529 free(errmsg);
9530 goto out_err;
9531 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9532 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9533 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]9534 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
9535 goto out_err;
9536 }
9537
9538 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9539 struct acl_cond *cond;
9540 char *errmsg = NULL;
9541
9542 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9543 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9544 file, linenum, args[0], errmsg);
9545 free(errmsg);
9546 goto out_err;
9547 }
9548 rule->cond = cond;
9549 }
9550 else if (*args[cur_arg]) {
9551 Alert("parsing [%s:%d]: 'http-response %s' expects"
9552 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9553 file, linenum, args[0], args[cur_arg]);
9554 goto out_err;
9555 }
9556
9557 return rule;
9558 out_err:
9559 free(rule);
9560 return NULL;
9561}
9562
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9563/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9564 * with <err> filled with the error message. If <use_fmt> is not null, builds a
9565 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9566 */
9567struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9568 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9569{
9570 struct redirect_rule *rule;
9571 int cur_arg;
9572 int type = REDIRECT_TYPE_NONE;
9573 int code = 302;
9574 const char *destination = NULL;
9575 const char *cookie = NULL;
9576 int cookie_set = 0;
9577 unsigned int flags = REDIRECT_FLAG_NONE;
9578 struct acl_cond *cond = NULL;
9579
9580 cur_arg = 0;
9581 while (*(args[cur_arg])) {
9582 if (strcmp(args[cur_arg], "location") == 0) {
9583 if (!*args[cur_arg + 1])
9584 goto missing_arg;
9585
9586 type = REDIRECT_TYPE_LOCATION;
9587 cur_arg++;
9588 destination = args[cur_arg];
9589 }
9590 else if (strcmp(args[cur_arg], "prefix") == 0) {
9591 if (!*args[cur_arg + 1])
9592 goto missing_arg;
9593
9594 type = REDIRECT_TYPE_PREFIX;
9595 cur_arg++;
9596 destination = args[cur_arg];
9597 }
9598 else if (strcmp(args[cur_arg], "scheme") == 0) {
9599 if (!*args[cur_arg + 1])
9600 goto missing_arg;
9601
9602 type = REDIRECT_TYPE_SCHEME;
9603 cur_arg++;
9604 destination = args[cur_arg];
9605 }
9606 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9607 if (!*args[cur_arg + 1])
9608 goto missing_arg;
9609
9610 cur_arg++;
9611 cookie = args[cur_arg];
9612 cookie_set = 1;
9613 }
9614 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9615 if (!*args[cur_arg + 1])
9616 goto missing_arg;
9617
9618 cur_arg++;
9619 cookie = args[cur_arg];
9620 cookie_set = 0;
9621 }
9622 else if (strcmp(args[cur_arg], "code") == 0) {
9623 if (!*args[cur_arg + 1])
9624 goto missing_arg;
9625
9626 cur_arg++;
9627 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9628 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9629 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9630 "'%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]9631 args[cur_arg - 1], args[cur_arg]);
9632 return NULL;
9633 }
9634 }
9635 else if (!strcmp(args[cur_arg],"drop-query")) {
9636 flags |= REDIRECT_FLAG_DROP_QS;
9637 }
9638 else if (!strcmp(args[cur_arg],"append-slash")) {
9639 flags |= REDIRECT_FLAG_APPEND_SLASH;
9640 }
9641 else if (strcmp(args[cur_arg], "if") == 0 ||
9642 strcmp(args[cur_arg], "unless") == 0) {
9643 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9644 if (!cond) {
9645 memprintf(errmsg, "error in condition: %s", *errmsg);
9646 return NULL;
9647 }
9648 break;
9649 }
9650 else {
9651 memprintf(errmsg,
9652 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9653 args[cur_arg]);
9654 return NULL;
9655 }
9656 cur_arg++;
9657 }
9658
9659 if (type == REDIRECT_TYPE_NONE) {
9660 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9661 return NULL;
9662 }
9663
9664 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
9665 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9666 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9667
9668 if (!use_fmt) {
9669 /* old-style static redirect rule */
9670 rule->rdr_str = strdup(destination);
9671 rule->rdr_len = strlen(destination);
9672 }
9673 else {
9674 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9675
9676 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
9677 * if prefix == "/", we don't want to add anything, otherwise it
9678 * makes it hard for the user to configure a self-redirection.
9679 */
Godbach543b9782014-12-18 15:44:58 +0800[diff] [blame]9680 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9681 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9682 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]9683 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9684 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9685 free(curproxy->conf.lfs_file);
9686 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
9687 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9688 }
9689 }
9690
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9691 if (cookie) {
9692 /* depending on cookie_set, either we want to set the cookie, or to clear it.
9693 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
9694 */
9695 rule->cookie_len = strlen(cookie);
9696 if (cookie_set) {
9697 rule->cookie_str = malloc(rule->cookie_len + 10);
9698 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9699 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
9700 rule->cookie_len += 9;
9701 } else {
9702 rule->cookie_str = malloc(rule->cookie_len + 21);
9703 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9704 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
9705 rule->cookie_len += 20;
9706 }
9707 }
9708 rule->type = type;
9709 rule->code = code;
9710 rule->flags = flags;
9711 LIST_INIT(&rule->list);
9712 return rule;
9713
9714 missing_arg:
9715 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9716 return NULL;
9717}
9718
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9719/************************************************************************/
9720/* The code below is dedicated to ACL parsing and matching */
9721/************************************************************************/
9722
9723
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9724/* This function ensures that the prerequisites for an L7 fetch are ready,
9725 * which means that a request or response is ready. If some data is missing,
9726 * 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]9727 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9728 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9729 *
9730 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9731 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9732 * decide whether or not an HTTP message is present ;
9733 * 0 if the requested data cannot be fetched or if it is certain that
9734 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9735 * 1 if an HTTP message is ready
9736 */
9737static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9738smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9739 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9740{
9741 struct http_txn *txn = l7;
9742 struct http_msg *msg = &txn->req;
9743
9744 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9745 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9746 */
9747
9748 if (unlikely(!s || !txn))
9749 return 0;
9750
9751 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9752 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9753
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9754 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9755 if (unlikely(!s->req))
9756 return 0;
9757
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9758 /* If the buffer does not leave enough free space at the end,
9759 * we must first realign it.
9760 */
9761 if (s->req->buf->p > s->req->buf->data &&
9762 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
9763 buffer_slow_realign(s->req->buf);
9764
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9765 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9766 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9767 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9768
9769 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9770 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9771 http_msg_analyzer(msg, &txn->hdr_idx);
9772
9773 /* Still no valid request ? */
9774 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9775 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9776 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9777 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9778 }
9779 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9780 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9781 return 0;
9782 }
9783
9784 /* OK we just got a valid HTTP request. We have some minor
9785 * preparation to perform so that further checks can rely
9786 * on HTTP tests.
9787 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9788
9789 /* If the request was parsed but was too large, we must absolutely
9790 * return an error so that it is not processed. At the moment this
9791 * cannot happen, but if the parsers are to change in the future,
9792 * we want this check to be maintained.
9793 */
9794 if (unlikely(s->req->buf->i + s->req->buf->p >
9795 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
9796 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9797 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9798 return 1;
9799 }
9800
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9801 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9802 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
9803 s->flags |= SN_REDIRECTABLE;
9804
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9805 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
9806 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9807 }
9808
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9809 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9810 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9811 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9812
9813 /* otherwise everything's ready for the request */
9814 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9815 else {
9816 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9817 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
9818 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9819 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9820 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9821 }
9822
9823 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9824 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9825 return 1;
9826}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9827
Willy Tarreaua4ba9db2014-06-25 16:56:41 +0200[diff] [blame]9828/* Note: these functinos *do* modify the sample. Even in case of success, at
9829 * least the type and uint value are modified.
9830 */
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9831#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9832 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]9833
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9834#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9835 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]9836
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9837
9838/* 1. Check on METHOD
9839 * We use the pre-parsed method if it is known, and store its number as an
9840 * integer. If it is unknown, we use the pointer and the length.
9841 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9842static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9843{
9844 int len, meth;
9845
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]9846 len = strlen(text);
9847 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9848
9849 pattern->val.i = meth;
9850 if (meth == HTTP_METH_OTHER) {
Willy Tarreau71196f32014-08-29 15:15:50 +0200[diff] [blame]9851 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9852 pattern->len = len;
9853 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9854 else {
9855 pattern->ptr.str = NULL;
9856 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9857 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9858 return 1;
9859}
9860
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9861/* This function fetches the method of current HTTP request and stores
9862 * it in the global pattern struct as a chunk. There are two possibilities :
9863 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
9864 * in <len> and <ptr> is NULL ;
9865 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
9866 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9867 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9868 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9869static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9870smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9871 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9872{
9873 int meth;
9874 struct http_txn *txn = l7;
9875
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9876 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9877
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9878 meth = txn->meth;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9879 smp->type = SMP_T_METH;
9880 smp->data.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9881 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9882 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
9883 /* ensure the indexes are not affected */
9884 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9885 smp->flags |= SMP_F_CONST;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9886 smp->data.meth.str.len = txn->req.sl.rq.m_l;
9887 smp->data.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9888 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9889 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9890 return 1;
9891}
9892
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9893/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9894static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9895{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9896 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9897 struct pattern_list *lst;
9898 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9899
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9900 list_for_each_entry(lst, &expr->patterns, list) {
9901 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9902
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9903 /* well-known method */
9904 if (pattern->val.i != HTTP_METH_OTHER) {
9905 if (smp->data.meth.meth == pattern->val.i)
9906 return pattern;
9907 else
9908 continue;
9909 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9910
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9911 /* Other method, we must compare the strings */
9912 if (pattern->len != smp->data.meth.str.len)
9913 continue;
9914
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9915 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Willy Tarreauc62a0c62014-08-28 20:42:57 +0200[diff] [blame]9916 if ((icase && strncasecmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0) ||
9917 (!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]9918 return pattern;
9919 }
9920 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9921}
9922
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9923static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9924smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9925 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9926{
9927 struct http_txn *txn = l7;
9928 char *ptr;
9929 int len;
9930
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9931 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9932
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9933 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9934 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9935
9936 while ((len-- > 0) && (*ptr++ != '/'));
9937 if (len <= 0)
9938 return 0;
9939
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9940 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9941 smp->data.str.str = ptr;
9942 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9943
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9944 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9945 return 1;
9946}
9947
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9948static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9949smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9950 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9951{
9952 struct http_txn *txn = l7;
9953 char *ptr;
9954 int len;
9955
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9956 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9957
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9958 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9959 return 0;
9960
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9961 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9962 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9963
9964 while ((len-- > 0) && (*ptr++ != '/'));
9965 if (len <= 0)
9966 return 0;
9967
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9968 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9969 smp->data.str.str = ptr;
9970 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9971
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9972 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9973 return 1;
9974}
9975
9976/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9977static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9978smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9979 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9980{
9981 struct http_txn *txn = l7;
9982 char *ptr;
9983 int len;
9984
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9985 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9986
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9987 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9988 return 0;
9989
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9990 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9991 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9992
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9993 smp->type = SMP_T_UINT;
9994 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9995 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9996 return 1;
9997}
9998
9999/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10000static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10001smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10002 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10003{
10004 struct http_txn *txn = l7;
10005
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10006 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10007
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10008 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10009 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10010 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10011 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10012 return 1;
10013}
10014
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10015static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10016smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10017 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10018{
10019 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10020 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10021
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10022 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10023
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10024 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]10025 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10026 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10027
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10028 smp->type = SMP_T_IPV4;
10029 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10030 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10031 return 1;
10032}
10033
10034static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10035smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10036 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10037{
10038 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10039 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10040
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10041 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10042
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10043 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]10044 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10045 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10046
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10047 smp->type = SMP_T_UINT;
10048 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10049 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10050 return 1;
10051}
10052
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10053/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10054 * Accepts an optional argument of type string containing the header field name,
10055 * and an optional argument of type signed or unsigned integer to request an
10056 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10057 * headers are considered from the first one. It does not stop on commas and
10058 * returns full lines instead (useful for User-Agent or Date for example).
10059 */
10060static int
10061smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10062 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10063{
10064 struct http_txn *txn = l7;
10065 struct hdr_idx *idx = &txn->hdr_idx;
10066 struct hdr_ctx *ctx = smp->ctx.a[0];
10067 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
10068 int occ = 0;
10069 const char *name_str = NULL;
10070 int name_len = 0;
10071
10072 if (!ctx) {
10073 /* first call */
10074 ctx = &static_hdr_ctx;
10075 ctx->idx = 0;
10076 smp->ctx.a[0] = ctx;
10077 }
10078
10079 if (args) {
10080 if (args[0].type != ARGT_STR)
10081 return 0;
10082 name_str = args[0].data.str.str;
10083 name_len = args[0].data.str.len;
10084
10085 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10086 occ = args[1].data.uint;
10087 }
10088
10089 CHECK_HTTP_MESSAGE_FIRST();
10090
10091 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10092 /* search for header from the beginning */
10093 ctx->idx = 0;
10094
10095 if (!occ && !(opt & SMP_OPT_ITERATE))
10096 /* no explicit occurrence and single fetch => last header by default */
10097 occ = -1;
10098
10099 if (!occ)
10100 /* prepare to report multiple occurrences for ACL fetches */
10101 smp->flags |= SMP_F_NOT_LAST;
10102
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10103 smp->type = SMP_T_STR;
10104 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10105 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
10106 return 1;
10107
10108 smp->flags &= ~SMP_F_NOT_LAST;
10109 return 0;
10110}
10111
10112/* 6. Check on HTTP header count. The number of occurrences is returned.
10113 * Accepts exactly 1 argument of type string. It does not stop on commas and
10114 * returns full lines instead (useful for User-Agent or Date for example).
10115 */
10116static int
10117smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10118 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10119{
10120 struct http_txn *txn = l7;
10121 struct hdr_idx *idx = &txn->hdr_idx;
10122 struct hdr_ctx ctx;
10123 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
10124 int cnt;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10125 const char *name = NULL;
10126 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10127
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10128 if (args && args->type == ARGT_STR) {
10129 name = args->data.str.str;
10130 len = args->data.str.len;
10131 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10132
10133 CHECK_HTTP_MESSAGE_FIRST();
10134
10135 ctx.idx = 0;
10136 cnt = 0;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10137 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10138 cnt++;
10139
10140 smp->type = SMP_T_UINT;
10141 smp->data.uint = cnt;
10142 smp->flags = SMP_F_VOL_HDR;
10143 return 1;
10144}
10145
10146/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10147 * Accepts an optional argument of type string containing the header field name,
10148 * and an optional argument of type signed or unsigned integer to request an
10149 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10150 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10151 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10152static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10153smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10154 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10155{
10156 struct http_txn *txn = l7;
10157 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10158 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10159 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10160 int occ = 0;
10161 const char *name_str = NULL;
10162 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10163
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10164 if (!ctx) {
10165 /* first call */
10166 ctx = &static_hdr_ctx;
10167 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10168 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10169 }
10170
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10171 if (args) {
10172 if (args[0].type != ARGT_STR)
10173 return 0;
10174 name_str = args[0].data.str.str;
10175 name_len = args[0].data.str.len;
10176
10177 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10178 occ = args[1].data.uint;
10179 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10180
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10181 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10182
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10183 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10184 /* search for header from the beginning */
10185 ctx->idx = 0;
10186
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10187 if (!occ && !(opt & SMP_OPT_ITERATE))
10188 /* no explicit occurrence and single fetch => last header by default */
10189 occ = -1;
10190
10191 if (!occ)
10192 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10193 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10194
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10195 smp->type = SMP_T_STR;
10196 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10197 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]10198 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10199
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10200 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10201 return 0;
10202}
10203
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10204/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10205 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10206 */
10207static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10208smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10209 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10210{
10211 struct http_txn *txn = l7;
10212 struct hdr_idx *idx = &txn->hdr_idx;
10213 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10214 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]10215 int cnt;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10216 const char *name = NULL;
10217 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10218
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10219 if (args && args->type == ARGT_STR) {
10220 name = args->data.str.str;
10221 len = args->data.str.len;
10222 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10223
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10224 CHECK_HTTP_MESSAGE_FIRST();
10225
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10226 ctx.idx = 0;
10227 cnt = 0;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10228 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10229 cnt++;
10230
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10231 smp->type = SMP_T_UINT;
10232 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10233 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10234 return 1;
10235}
10236
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10237/* Fetch an HTTP header's integer value. The integer value is returned. It
10238 * takes a mandatory argument of type string and an optional one of type int
10239 * to designate a specific occurrence. It returns an unsigned integer, which
10240 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10241 */
10242static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10243smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10244 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10245{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10246 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10247
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10248 if (ret > 0) {
10249 smp->type = SMP_T_UINT;
10250 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10251 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10252
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10253 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10254}
10255
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10256/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10257 * and an optional one of type int to designate a specific occurrence.
10258 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10259 */
10260static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10261smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10262 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10263{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10264 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10265
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10266 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10267 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
10268 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10269 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10270 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10271 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10272 if (smp->data.str.len < temp->size - 1) {
10273 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
10274 temp->str[smp->data.str.len] = '\0';
10275 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
10276 smp->type = SMP_T_IPV6;
10277 break;
10278 }
10279 }
10280 }
10281
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10282 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10283 if (!(smp->flags & SMP_F_NOT_LAST))
10284 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10285 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10286 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10287}
10288
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10289/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10290 * the first '/' after the possible hostname, and ends before the possible '?'.
10291 */
10292static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10293smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10294 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10295{
10296 struct http_txn *txn = l7;
10297 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10298
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10299 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10300
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10301 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]10302 ptr = http_get_path(txn);
10303 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10304 return 0;
10305
10306 /* OK, we got the '/' ! */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10307 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10308 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10309
10310 while (ptr < end && *ptr != '?')
10311 ptr++;
10312
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10313 smp->data.str.len = ptr - smp->data.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10314 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10315 return 1;
10316}
10317
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10318/* This produces a concatenation of the first occurrence of the Host header
10319 * followed by the path component if it begins with a slash ('/'). This means
10320 * that '*' will not be added, resulting in exactly the first Host entry.
10321 * If no Host header is found, then the path is returned as-is. The returned
10322 * 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]10323 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10324 */
10325static int
10326smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10327 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10328{
10329 struct http_txn *txn = l7;
10330 char *ptr, *end, *beg;
10331 struct hdr_ctx ctx;
Willy Tarreauc1fbbd42014-06-24 17:27:02 +0200[diff] [blame]10332 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10333
10334 CHECK_HTTP_MESSAGE_FIRST();
10335
10336 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10337 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]10338 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10339
10340 /* 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]10341 temp = get_trash_chunk();
10342 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10343 smp->type = SMP_T_STR;
Willy Tarreauc1fbbd42014-06-24 17:27:02 +0200[diff] [blame]10344 smp->data.str.str = temp->str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10345 smp->data.str.len = ctx.vlen;
10346
10347 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10348 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]10349 beg = http_get_path(txn);
10350 if (!beg)
10351 beg = end;
10352
10353 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10354
10355 if (beg < ptr && *beg == '/') {
10356 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
10357 smp->data.str.len += ptr - beg;
10358 }
10359
10360 smp->flags = SMP_F_VOL_1ST;
10361 return 1;
10362}
10363
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10364/* This produces a 32-bit hash of the concatenation of the first occurrence of
10365 * the Host header followed by the path component if it begins with a slash ('/').
10366 * This means that '*' will not be added, resulting in exactly the first Host
10367 * 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]10368 * is hashed using the path hash followed by a full avalanche hash and provides a
10369 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10370 * high-traffic sites without having to store whole paths.
10371 */
10372static int
10373smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10374 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10375{
10376 struct http_txn *txn = l7;
10377 struct hdr_ctx ctx;
10378 unsigned int hash = 0;
10379 char *ptr, *beg, *end;
10380 int len;
10381
10382 CHECK_HTTP_MESSAGE_FIRST();
10383
10384 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10385 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]10386 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10387 ptr = ctx.line + ctx.val;
10388 len = ctx.vlen;
10389 while (len--)
10390 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10391 }
10392
10393 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10394 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]10395 beg = http_get_path(txn);
10396 if (!beg)
10397 beg = end;
10398
10399 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10400
10401 if (beg < ptr && *beg == '/') {
10402 while (beg < ptr)
10403 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10404 }
10405 hash = full_hash(hash);
10406
10407 smp->type = SMP_T_UINT;
10408 smp->data.uint = hash;
10409 smp->flags = SMP_F_VOL_1ST;
10410 return 1;
10411}
10412
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10413/* 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]10414 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10415 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10416 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10417 * that in environments where IPv6 is insignificant, truncating the output to
10418 * 8 bytes would still work.
10419 */
10420static int
10421smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10422 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10423{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10424 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10425 struct connection *cli_conn = objt_conn(l4->si[0].end);
10426
10427 if (!cli_conn)
10428 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10429
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10430 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10431 return 0;
10432
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10433 temp = get_trash_chunk();
Willy Tarreau0dff81c2014-07-15 21:34:06 +0200[diff] [blame]10434 *(unsigned int *)temp->str = htonl(smp->data.uint);
10435 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10436
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10437 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10438 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10439 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]10440 temp->len += 4;
10441 break;
10442 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10443 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]10444 temp->len += 16;
10445 break;
10446 default:
10447 return 0;
10448 }
10449
10450 smp->data.str = *temp;
10451 smp->type = SMP_T_BIN;
10452 return 1;
10453}
10454
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10455static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10456smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10457 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10458{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10459 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10460 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10461 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10462
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10463 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10464
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10465 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10466 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10467 return 1;
10468}
10469
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10470/* return a valid test if the current request is the first one on the connection */
10471static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10472smp_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]10473 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10474{
10475 if (!s)
10476 return 0;
10477
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10478 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10479 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10480 return 1;
10481}
10482
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10483/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10484static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10485smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10486 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10487{
10488
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10489 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10490 return 0;
10491
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10492 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10493
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10494 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10495 return 0;
10496
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10497 smp->type = SMP_T_BOOL;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10498 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]10499 return 1;
10500}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10501
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10502/* Accepts exactly 1 argument of type userlist */
10503static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10504smp_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]10505 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10506{
10507
10508 if (!args || args->type != ARGT_USR)
10509 return 0;
10510
10511 CHECK_HTTP_MESSAGE_FIRST();
10512
10513 if (!get_http_auth(l4))
10514 return 0;
10515
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10516 /* if the user does not belong to the userlist or has a wrong password,
10517 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10518 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10519 */
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10520 if (!check_user(args->data.usr, l4->txn.auth.user, l4->txn.auth.pass))
10521 return 0;
10522
10523 /* pat_match_auth() will need the user list */
10524 smp->ctx.a[0] = args->data.usr;
10525
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10526 smp->type = SMP_T_STR;
10527 smp->flags = SMP_F_CONST;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10528 smp->data.str.str = l4->txn.auth.user;
10529 smp->data.str.len = strlen(l4->txn.auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10530
10531 return 1;
10532}
10533
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10534/* Try to find the next occurrence of a cookie name in a cookie header value.
10535 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10536 * the cookie value is returned into *value and *value_l, and the function
10537 * returns a pointer to the next pointer to search from if the value was found.
10538 * Otherwise if the cookie was not found, NULL is returned and neither value
10539 * nor value_l are touched. The input <hdr> string should first point to the
10540 * header's value, and the <hdr_end> pointer must point to the first character
10541 * not part of the value. <list> must be non-zero if value may represent a list
10542 * of values (cookie headers). This makes it faster to abort parsing when no
10543 * list is expected.
10544 */
10545static char *
10546extract_cookie_value(char *hdr, const char *hdr_end,
10547 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10548 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10549{
10550 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10551 char *next;
10552
10553 /* we search at least a cookie name followed by an equal, and more
10554 * generally something like this :
10555 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
10556 */
10557 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
10558 /* Iterate through all cookies on this line */
10559
10560 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
10561 att_beg++;
10562
10563 /* find att_end : this is the first character after the last non
10564 * space before the equal. It may be equal to hdr_end.
10565 */
10566 equal = att_end = att_beg;
10567
10568 while (equal < hdr_end) {
10569 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
10570 break;
10571 if (http_is_spht[(unsigned char)*equal++])
10572 continue;
10573 att_end = equal;
10574 }
10575
10576 /* here, <equal> points to '=', a delimitor or the end. <att_end>
10577 * is between <att_beg> and <equal>, both may be identical.
10578 */
10579
10580 /* look for end of cookie if there is an equal sign */
10581 if (equal < hdr_end && *equal == '=') {
10582 /* look for the beginning of the value */
10583 val_beg = equal + 1;
10584 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
10585 val_beg++;
10586
10587 /* find the end of the value, respecting quotes */
10588 next = find_cookie_value_end(val_beg, hdr_end);
10589
10590 /* make val_end point to the first white space or delimitor after the value */
10591 val_end = next;
10592 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
10593 val_end--;
10594 } else {
10595 val_beg = val_end = next = equal;
10596 }
10597
10598 /* We have nothing to do with attributes beginning with '$'. However,
10599 * they will automatically be removed if a header before them is removed,
10600 * since they're supposed to be linked together.
10601 */
10602 if (*att_beg == '$')
10603 continue;
10604
10605 /* Ignore cookies with no equal sign */
10606 if (equal == next)
10607 continue;
10608
10609 /* Now we have the cookie name between att_beg and att_end, and
10610 * its value between val_beg and val_end.
10611 */
10612
10613 if (att_end - att_beg == cookie_name_l &&
10614 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
10615 /* let's return this value and indicate where to go on from */
10616 *value = val_beg;
10617 *value_l = val_end - val_beg;
10618 return next + 1;
10619 }
10620
10621 /* Set-Cookie headers only have the name in the first attr=value part */
10622 if (!list)
10623 break;
10624 }
10625
10626 return NULL;
10627}
10628
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10629/* Fetch a captured HTTP request header. The index is the position of
10630 * the "capture" option in the configuration file
10631 */
10632static int
10633smp_fetch_capture_header_req(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10634 const struct arg *args, struct sample *smp, const char *kw)
10635{
10636 struct proxy *fe = l4->fe;
10637 struct http_txn *txn = l7;
10638 int idx;
10639
10640 if (!args || args->type != ARGT_UINT)
10641 return 0;
10642
10643 idx = args->data.uint;
10644
10645 if (idx > (fe->nb_req_cap - 1) || txn->req.cap == NULL || txn->req.cap[idx] == NULL)
10646 return 0;
10647
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10648 smp->type = SMP_T_STR;
10649 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10650 smp->data.str.str = txn->req.cap[idx];
10651 smp->data.str.len = strlen(txn->req.cap[idx]);
10652
10653 return 1;
10654}
10655
10656/* Fetch a captured HTTP response header. The index is the position of
10657 * the "capture" option in the configuration file
10658 */
10659static int
10660smp_fetch_capture_header_res(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10661 const struct arg *args, struct sample *smp, const char *kw)
10662{
10663 struct proxy *fe = l4->fe;
10664 struct http_txn *txn = l7;
10665 int idx;
10666
10667 if (!args || args->type != ARGT_UINT)
10668 return 0;
10669
10670 idx = args->data.uint;
10671
10672 if (idx > (fe->nb_rsp_cap - 1) || txn->rsp.cap == NULL || txn->rsp.cap[idx] == NULL)
10673 return 0;
10674
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10675 smp->type = SMP_T_STR;
10676 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10677 smp->data.str.str = txn->rsp.cap[idx];
10678 smp->data.str.len = strlen(txn->rsp.cap[idx]);
10679
10680 return 1;
10681}
10682
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10683/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
10684static int
10685smp_fetch_capture_req_method(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10686 const struct arg *args, struct sample *smp, const char *kw)
10687{
10688 struct chunk *temp;
10689 struct http_txn *txn = l7;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10690 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10691
10692 if (!txn->uri)
10693 return 0;
10694
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10695 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10696
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10697 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10698 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10699
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10700 temp = get_trash_chunk();
10701 temp->str = txn->uri;
10702 temp->len = ptr - txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10703 smp->data.str = *temp;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10704 smp->type = SMP_T_STR;
10705 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10706
10707 return 1;
10708
10709}
10710
10711/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
10712static int
10713smp_fetch_capture_req_uri(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10714 const struct arg *args, struct sample *smp, const char *kw)
10715{
10716 struct chunk *temp;
10717 struct http_txn *txn = l7;
10718 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10719
10720 if (!txn->uri)
10721 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10722
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10723 ptr = txn->uri;
10724
10725 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10726 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10727
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10728 if (!*ptr)
10729 return 0;
10730
10731 ptr++; /* skip the space */
10732
10733 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10734 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10735 if (!ptr)
10736 return 0;
10737 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
10738 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10739
10740 smp->data.str = *temp;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10741 smp->data.str.len = ptr - temp->str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10742 smp->type = SMP_T_STR;
10743 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10744
10745 return 1;
10746}
10747
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10748/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
10749 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10750 */
10751static int
10752smp_fetch_capture_req_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10753 const struct arg *args, struct sample *smp, const char *kw)
10754{
10755 struct http_txn *txn = l7;
10756
10757 if (txn->req.msg_state < HTTP_MSG_HDR_FIRST)
10758 return 0;
10759
10760 if (txn->req.flags & HTTP_MSGF_VER_11)
10761 smp->data.str.str = "HTTP/1.1";
10762 else
10763 smp->data.str.str = "HTTP/1.0";
10764
10765 smp->data.str.len = 8;
10766 smp->type = SMP_T_STR;
10767 smp->flags = SMP_F_CONST;
10768 return 1;
10769
10770}
10771
10772/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
10773 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10774 */
10775static int
10776smp_fetch_capture_res_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10777 const struct arg *args, struct sample *smp, const char *kw)
10778{
10779 struct http_txn *txn = l7;
10780
10781 if (txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
10782 return 0;
10783
10784 if (txn->rsp.flags & HTTP_MSGF_VER_11)
10785 smp->data.str.str = "HTTP/1.1";
10786 else
10787 smp->data.str.str = "HTTP/1.0";
10788
10789 smp->data.str.len = 8;
10790 smp->type = SMP_T_STR;
10791 smp->flags = SMP_F_CONST;
10792 return 1;
10793
10794}
10795
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10796
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10797/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10798 * 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]10799 * 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]10800 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10801 * 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]10802 * Accepts exactly 1 argument of type string. If the input options indicate
10803 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10804 * The returned sample is of type CSTR. Can be used to parse cookies in other
10805 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10806 */
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10807int smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10808 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10809{
10810 struct http_txn *txn = l7;
10811 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10812 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10813 const struct http_msg *msg;
10814 const char *hdr_name;
10815 int hdr_name_len;
10816 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10817 int occ = 0;
10818 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10819
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10820 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10821 return 0;
10822
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10823 if (!ctx) {
10824 /* first call */
10825 ctx = &static_hdr_ctx;
10826 ctx->idx = 0;
10827 smp->ctx.a[2] = ctx;
10828 }
10829
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10830 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10831
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10832 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10833 msg = &txn->req;
10834 hdr_name = "Cookie";
10835 hdr_name_len = 6;
10836 } else {
10837 msg = &txn->rsp;
10838 hdr_name = "Set-Cookie";
10839 hdr_name_len = 10;
10840 }
10841
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10842 if (!occ && !(opt & SMP_OPT_ITERATE))
10843 /* no explicit occurrence and single fetch => last cookie by default */
10844 occ = -1;
10845
10846 /* OK so basically here, either we want only one value and it's the
10847 * last one, or we want to iterate over all of them and we fetch the
10848 * next one.
10849 */
10850
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10851 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10852 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10853 /* search for the header from the beginning, we must first initialize
10854 * the search parameters.
10855 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10856 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10857 ctx->idx = 0;
10858 }
10859
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10860 smp->flags |= SMP_F_VOL_HDR;
10861
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10862 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10863 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
10864 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10865 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
10866 goto out;
10867
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10868 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10869 continue;
10870
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10871 smp->ctx.a[0] = ctx->line + ctx->val;
10872 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10873 }
10874
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10875 smp->type = SMP_T_STR;
10876 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10877 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]10878 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10879 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10880 &smp->data.str.str,
10881 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10882 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10883 found = 1;
10884 if (occ >= 0) {
10885 /* one value was returned into smp->data.str.{str,len} */
10886 smp->flags |= SMP_F_NOT_LAST;
10887 return 1;
10888 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10889 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10890 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10891 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10892 /* all cookie headers and values were scanned. If we're looking for the
10893 * last occurrence, we may return it now.
10894 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10895 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10896 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10897 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10898}
10899
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10900/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10901 * 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]10902 * multiple cookies may be parsed on the same line. The returned sample is of
10903 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10904 */
10905static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10906smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10907 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10908{
10909 struct http_txn *txn = l7;
10910 struct hdr_idx *idx = &txn->hdr_idx;
10911 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10912 const struct http_msg *msg;
10913 const char *hdr_name;
10914 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10915 int cnt;
10916 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10917 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10918
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10919 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10920 return 0;
10921
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10922 CHECK_HTTP_MESSAGE_FIRST();
10923
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10924 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10925 msg = &txn->req;
10926 hdr_name = "Cookie";
10927 hdr_name_len = 6;
10928 } else {
10929 msg = &txn->rsp;
10930 hdr_name = "Set-Cookie";
10931 hdr_name_len = 10;
10932 }
10933
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10934 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]10935 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10936 ctx.idx = 0;
10937 cnt = 0;
10938
10939 while (1) {
10940 /* Note: val_beg == NULL every time we need to fetch a new header */
10941 if (!val_beg) {
10942 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
10943 break;
10944
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10945 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10946 continue;
10947
10948 val_beg = ctx.line + ctx.val;
10949 val_end = val_beg + ctx.vlen;
10950 }
10951
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10952 smp->type = SMP_T_STR;
10953 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10954 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10955 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10956 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10957 &smp->data.str.str,
10958 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10959 cnt++;
10960 }
10961 }
10962
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]10963 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10964 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10965 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10966 return 1;
10967}
10968
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10969/* Fetch an cookie's integer value. The integer value is returned. It
10970 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
10971 */
10972static int
10973smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10974 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10975{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10976 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10977
10978 if (ret > 0) {
10979 smp->type = SMP_T_UINT;
10980 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10981 }
10982
10983 return ret;
10984}
10985
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10986/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10987/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10988/************************************************************************/
10989
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10990/*
10991 * Given a path string and its length, find the position of beginning of the
10992 * query string. Returns NULL if no query string is found in the path.
10993 *
10994 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
10995 *
10996 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
10997 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10998static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10999{
11000 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11001
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11002 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11003 return p ? p + 1 : NULL;
11004}
11005
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11006static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11007{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11008 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11009}
11010
11011/*
11012 * Given a url parameter, find the starting position of the first occurence,
11013 * or NULL if the parameter is not found.
11014 *
11015 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11016 * the function will return query_string+8.
11017 */
11018static char*
11019find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11020 char* url_param_name, size_t url_param_name_l,
11021 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11022{
11023 char *pos, *last;
11024
11025 pos = query_string;
11026 last = query_string + query_string_l - url_param_name_l - 1;
11027
11028 while (pos <= last) {
11029 if (pos[url_param_name_l] == '=') {
11030 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
11031 return pos;
11032 pos += url_param_name_l + 1;
11033 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11034 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11035 pos++;
11036 pos++;
11037 }
11038 return NULL;
11039}
11040
11041/*
11042 * Given a url parameter name, returns its value and size into *value and
11043 * *value_l respectively, and returns non-zero. If the parameter is not found,
11044 * zero is returned and value/value_l are not touched.
11045 */
11046static int
11047find_url_param_value(char* path, size_t path_l,
11048 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11049 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11050{
11051 char *query_string, *qs_end;
11052 char *arg_start;
11053 char *value_start, *value_end;
11054
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11055 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11056 if (!query_string)
11057 return 0;
11058
11059 qs_end = path + path_l;
11060 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11061 url_param_name, url_param_name_l,
11062 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11063 if (!arg_start)
11064 return 0;
11065
11066 value_start = arg_start + url_param_name_l + 1;
11067 value_end = value_start;
11068
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11069 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11070 value_end++;
11071
11072 *value = value_start;
11073 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]11074 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11075}
11076
11077static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11078smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11079 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11080{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11081 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11082 struct http_txn *txn = l7;
11083 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11084
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11085 if (!args || args[0].type != ARGT_STR ||
11086 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11087 return 0;
11088
11089 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11090
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11091 if (args[1].type)
11092 delim = *args[1].data.str.str;
11093
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11094 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]11095 args->data.str.str, args->data.str.len,
11096 &smp->data.str.str, &smp->data.str.len,
11097 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11098 return 0;
11099
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11100 smp->type = SMP_T_STR;
11101 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11102 return 1;
11103}
11104
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11105/* Return the signed integer value for the specified url parameter (see url_param
11106 * above).
11107 */
11108static int
11109smp_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]11110 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11111{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11112 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11113
11114 if (ret > 0) {
11115 smp->type = SMP_T_UINT;
11116 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11117 }
11118
11119 return ret;
11120}
11121
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11122/* This produces a 32-bit hash of the concatenation of the first occurrence of
11123 * the Host header followed by the path component if it begins with a slash ('/').
11124 * This means that '*' will not be added, resulting in exactly the first Host
11125 * entry. If no Host header is found, then the path is used. The resulting value
11126 * is hashed using the url hash followed by a full avalanche hash and provides a
11127 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11128 * high-traffic sites without having to store whole paths.
11129 * this differs from the base32 functions in that it includes the url parameters
11130 * as well as the path
11131 */
11132static int
11133smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11134 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11135{
11136 struct http_txn *txn = l7;
11137 struct hdr_ctx ctx;
11138 unsigned int hash = 0;
11139 char *ptr, *beg, *end;
11140 int len;
11141
11142 CHECK_HTTP_MESSAGE_FIRST();
11143
11144 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11145 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]11146 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11147 ptr = ctx.line + ctx.val;
11148 len = ctx.vlen;
11149 while (len--)
11150 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11151 }
11152
11153 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11154 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]11155 beg = http_get_path(txn);
11156 if (!beg)
11157 beg = end;
11158
11159 for (ptr = beg; ptr < end ; ptr++);
11160
11161 if (beg < ptr && *beg == '/') {
11162 while (beg < ptr)
11163 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11164 }
11165 hash = full_hash(hash);
11166
11167 smp->type = SMP_T_UINT;
11168 smp->data.uint = hash;
11169 smp->flags = SMP_F_VOL_1ST;
11170 return 1;
11171}
11172
11173/* This concatenates the source address with the 32-bit hash of the Host and
11174 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11175 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11176 * on the source address length. The URL hash is stored before the address so
11177 * that in environments where IPv6 is insignificant, truncating the output to
11178 * 8 bytes would still work.
11179 */
11180static int
11181smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11182 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11183{
11184 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11185 struct connection *cli_conn = objt_conn(l4->si[0].end);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11186
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11187 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11188 return 0;
11189
11190 temp = get_trash_chunk();
11191 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
11192 temp->len += sizeof(smp->data.uint);
11193
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11194 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11195 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11196 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]11197 temp->len += 4;
11198 break;
11199 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11200 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]11201 temp->len += 16;
11202 break;
11203 default:
11204 return 0;
11205 }
11206
11207 smp->data.str = *temp;
11208 smp->type = SMP_T_BIN;
11209 return 1;
11210}
11211
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11212/* This function is used to validate the arguments passed to any "hdr" fetch
11213 * keyword. These keywords support an optional positive or negative occurrence
11214 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11215 * is assumed that the types are already the correct ones. Returns 0 on error,
11216 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11217 * error message in case of error, that the caller is responsible for freeing.
11218 * The initial location must either be freeable or NULL.
11219 */
11220static int val_hdr(struct arg *arg, char **err_msg)
11221{
11222 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11223 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11224 return 0;
11225 }
11226 return 1;
11227}
11228
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11229/* takes an UINT value on input supposed to represent the time since EPOCH,
11230 * adds an optional offset found in args[0] and emits a string representing
11231 * the date in RFC-1123/5322 format.
11232 */
11233static int sample_conv_http_date(const struct arg *args, struct sample *smp)
11234{
11235 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
11236 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11237 struct chunk *temp;
11238 struct tm *tm;
11239 time_t curr_date = smp->data.uint;
11240
11241 /* add offset */
11242 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
11243 curr_date += args[0].data.sint;
11244
11245 tm = gmtime(&curr_date);
11246
11247 temp = get_trash_chunk();
11248 temp->len = snprintf(temp->str, temp->size - temp->len,
11249 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11250 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11251 tm->tm_hour, tm->tm_min, tm->tm_sec);
11252
11253 smp->data.str = *temp;
11254 smp->type = SMP_T_STR;
11255 return 1;
11256}
11257
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11258/* Match language range with language tag. RFC2616 14.4:
11259 *
11260 * A language-range matches a language-tag if it exactly equals
11261 * the tag, or if it exactly equals a prefix of the tag such
11262 * that the first tag character following the prefix is "-".
11263 *
11264 * Return 1 if the strings match, else return 0.
11265 */
11266static inline int language_range_match(const char *range, int range_len,
11267 const char *tag, int tag_len)
11268{
11269 const char *end = range + range_len;
11270 const char *tend = tag + tag_len;
11271 while (range < end) {
11272 if (*range == '-' && tag == tend)
11273 return 1;
11274 if (*range != *tag || tag == tend)
11275 return 0;
11276 range++;
11277 tag++;
11278 }
11279 /* Return true only if the last char of the tag is matched. */
11280 return tag == tend;
11281}
11282
11283/* Arguments: The list of expected value, the number of parts returned and the separator */
11284static int sample_conv_q_prefered(const struct arg *args, struct sample *smp)
11285{
11286 const char *al = smp->data.str.str;
11287 const char *end = al + smp->data.str.len;
11288 const char *token;
11289 int toklen;
11290 int qvalue;
11291 const char *str;
11292 const char *w;
11293 int best_q = 0;
11294
11295 /* Set the constant to the sample, because the output of the
11296 * function will be peek in the constant configuration string.
11297 */
11298 smp->flags |= SMP_F_CONST;
11299 smp->data.str.size = 0;
11300 smp->data.str.str = "";
11301 smp->data.str.len = 0;
11302
11303 /* Parse the accept language */
11304 while (1) {
11305
11306 /* Jump spaces, quit if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11307 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11308 al++;
11309 if (al >= end)
11310 break;
11311
11312 /* Start of the fisrt word. */
11313 token = al;
11314
11315 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11316 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11317 al++;
11318 if (al == token)
11319 goto expect_comma;
11320
11321 /* Length of the token. */
11322 toklen = al - token;
11323 qvalue = 1000;
11324
11325 /* Check if the token exists in the list. If the token not exists,
11326 * jump to the next token.
11327 */
11328 str = args[0].data.str.str;
11329 w = str;
11330 while (1) {
11331 if (*str == ';' || *str == '\0') {
11332 if (language_range_match(token, toklen, w, str-w))
11333 goto look_for_q;
11334 if (*str == '\0')
11335 goto expect_comma;
11336 w = str + 1;
11337 }
11338 str++;
11339 }
11340 goto expect_comma;
11341
11342look_for_q:
11343
11344 /* Jump spaces, quit if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11345 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11346 al++;
11347 if (al >= end)
11348 goto process_value;
11349
11350 /* If ',' is found, process the result */
11351 if (*al == ',')
11352 goto process_value;
11353
11354 /* If the character is different from ';', look
11355 * for the end of the header part in best effort.
11356 */
11357 if (*al != ';')
11358 goto expect_comma;
11359
11360 /* Assumes that the char is ';', now expect "q=". */
11361 al++;
11362
11363 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11364 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11365 al++;
11366 if (al >= end)
11367 goto process_value;
11368
11369 /* Expect 'q'. If no 'q', continue in best effort */
11370 if (*al != 'q')
11371 goto process_value;
11372 al++;
11373
11374 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11375 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11376 al++;
11377 if (al >= end)
11378 goto process_value;
11379
11380 /* Expect '='. If no '=', continue in best effort */
11381 if (*al != '=')
11382 goto process_value;
11383 al++;
11384
11385 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11386 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11387 al++;
11388 if (al >= end)
11389 goto process_value;
11390
11391 /* Parse the q value. */
11392 qvalue = parse_qvalue(al, &al);
11393
11394process_value:
11395
11396 /* If the new q value is the best q value, then store the associated
11397 * language in the response. If qvalue is the biggest value (1000),
11398 * break the process.
11399 */
11400 if (qvalue > best_q) {
11401 smp->data.str.str = (char *)w;
11402 smp->data.str.len = str - w;
11403 if (qvalue >= 1000)
11404 break;
11405 best_q = qvalue;
11406 }
11407
11408expect_comma:
11409
11410 /* Expect comma or end. If the end is detected, quit the loop. */
11411 while (al < end && *al != ',')
11412 al++;
11413 if (al >= end)
11414 break;
11415
11416 /* Comma is found, jump it and restart the analyzer. */
11417 al++;
11418 }
11419
11420 /* Set default value if required. */
11421 if (smp->data.str.len == 0 && args[1].type == ARGT_STR) {
11422 smp->data.str.str = args[1].data.str.str;
11423 smp->data.str.len = args[1].data.str.len;
11424 }
11425
11426 /* Return true only if a matching language was found. */
11427 return smp->data.str.len != 0;
11428}
11429
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]11430/*
11431 * Return the struct http_req_action_kw associated to a keyword.
11432 */
11433struct http_req_action_kw *action_http_req_custom(const char *kw)
11434{
11435 if (!LIST_ISEMPTY(&http_req_keywords.list)) {
11436 struct http_req_action_kw_list *kw_list;
11437 int i;
11438
11439 list_for_each_entry(kw_list, &http_req_keywords.list, list) {
11440 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
11441 if (!strcmp(kw, kw_list->kw[i].kw))
11442 return &kw_list->kw[i];
11443 }
11444 }
11445 }
11446 return NULL;
11447}
11448
11449/*
11450 * Return the struct http_res_action_kw associated to a keyword.
11451 */
11452struct http_res_action_kw *action_http_res_custom(const char *kw)
11453{
11454 if (!LIST_ISEMPTY(&http_res_keywords.list)) {
11455 struct http_res_action_kw_list *kw_list;
11456 int i;
11457
11458 list_for_each_entry(kw_list, &http_res_keywords.list, list) {
11459 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
11460 if (!strcmp(kw, kw_list->kw[i].kw))
11461 return &kw_list->kw[i];
11462 }
11463 }
11464 }
11465 return NULL;
11466}
11467
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11468/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11469/* All supported ACL keywords must be declared here. */
11470/************************************************************************/
11471
11472/* Note: must not be declared <const> as its list will be overwritten.
11473 * Please take care of keeping this list alphabetically sorted.
11474 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]11475static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11476 { "base", "base", PAT_MATCH_STR },
11477 { "base_beg", "base", PAT_MATCH_BEG },
11478 { "base_dir", "base", PAT_MATCH_DIR },
11479 { "base_dom", "base", PAT_MATCH_DOM },
11480 { "base_end", "base", PAT_MATCH_END },
11481 { "base_len", "base", PAT_MATCH_LEN },
11482 { "base_reg", "base", PAT_MATCH_REG },
11483 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11484
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11485 { "cook", "req.cook", PAT_MATCH_STR },
11486 { "cook_beg", "req.cook", PAT_MATCH_BEG },
11487 { "cook_dir", "req.cook", PAT_MATCH_DIR },
11488 { "cook_dom", "req.cook", PAT_MATCH_DOM },
11489 { "cook_end", "req.cook", PAT_MATCH_END },
11490 { "cook_len", "req.cook", PAT_MATCH_LEN },
11491 { "cook_reg", "req.cook", PAT_MATCH_REG },
11492 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11493
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11494 { "hdr", "req.hdr", PAT_MATCH_STR },
11495 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
11496 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
11497 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
11498 { "hdr_end", "req.hdr", PAT_MATCH_END },
11499 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
11500 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
11501 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11502
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11503 /* these two declarations uses strings with list storage (in place
11504 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
11505 * and delete functions are relative to the list management. The parse
11506 * and match method are related to the corresponding fetch methods. This
11507 * is very particular ACL declaration mode.
11508 */
11509 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
11510 { "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]11511
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11512 { "path", "path", PAT_MATCH_STR },
11513 { "path_beg", "path", PAT_MATCH_BEG },
11514 { "path_dir", "path", PAT_MATCH_DIR },
11515 { "path_dom", "path", PAT_MATCH_DOM },
11516 { "path_end", "path", PAT_MATCH_END },
11517 { "path_len", "path", PAT_MATCH_LEN },
11518 { "path_reg", "path", PAT_MATCH_REG },
11519 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11520
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11521 { "req_ver", "req.ver", PAT_MATCH_STR },
11522 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11523
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11524 { "scook", "res.cook", PAT_MATCH_STR },
11525 { "scook_beg", "res.cook", PAT_MATCH_BEG },
11526 { "scook_dir", "res.cook", PAT_MATCH_DIR },
11527 { "scook_dom", "res.cook", PAT_MATCH_DOM },
11528 { "scook_end", "res.cook", PAT_MATCH_END },
11529 { "scook_len", "res.cook", PAT_MATCH_LEN },
11530 { "scook_reg", "res.cook", PAT_MATCH_REG },
11531 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11532
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11533 { "shdr", "res.hdr", PAT_MATCH_STR },
11534 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
11535 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
11536 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
11537 { "shdr_end", "res.hdr", PAT_MATCH_END },
11538 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
11539 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
11540 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11541
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11542 { "url", "url", PAT_MATCH_STR },
11543 { "url_beg", "url", PAT_MATCH_BEG },
11544 { "url_dir", "url", PAT_MATCH_DIR },
11545 { "url_dom", "url", PAT_MATCH_DOM },
11546 { "url_end", "url", PAT_MATCH_END },
11547 { "url_len", "url", PAT_MATCH_LEN },
11548 { "url_reg", "url", PAT_MATCH_REG },
11549 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11550
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11551 { "urlp", "urlp", PAT_MATCH_STR },
11552 { "urlp_beg", "urlp", PAT_MATCH_BEG },
11553 { "urlp_dir", "urlp", PAT_MATCH_DIR },
11554 { "urlp_dom", "urlp", PAT_MATCH_DOM },
11555 { "urlp_end", "urlp", PAT_MATCH_END },
11556 { "urlp_len", "urlp", PAT_MATCH_LEN },
11557 { "urlp_reg", "urlp", PAT_MATCH_REG },
11558 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11559
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]11560 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11561}};
11562
11563/************************************************************************/
11564/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11565/************************************************************************/
11566/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]11567static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11568 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11569 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
11570 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
11571
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11572 /* capture are allocated and are permanent in the session */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11573 { "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]11574
11575 /* retrieve these captures from the HTTP logs */
11576 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11577 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11578 { "capture.req.ver", smp_fetch_capture_req_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11579
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11580 { "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]11581 { "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]11582
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11583 /* cookie is valid in both directions (eg: for "stick ...") but cook*
11584 * are only here to match the ACL's name, are request-only and are used
11585 * for ACL compatibility only.
11586 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11587 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
11588 { "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]11589 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11590 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11591
11592 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
11593 * only here to match the ACL's name, are request-only and are used for
11594 * ACL compatibility only.
11595 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11596 { "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]11597 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11598 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
11599 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
11600
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]11601 { "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]11602 { "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]11603 { "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]11604 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11605 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11606
11607 /* HTTP protocol on the request path */
11608 { "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]11609 { "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]11610
11611 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11612 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
11613 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11614
11615 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11616 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
11617 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11618
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11619 /* 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]11620 { "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]11621 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11622 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11623
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11624 { "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]11625 { "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]11626 { "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]11627 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11628 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
11629 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
11630
11631 /* 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]11632 { "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]11633 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11634 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11635
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11636 { "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]11637 { "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]11638 { "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]11639 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11640 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
11641 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
11642
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11643 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11644 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11645 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11646 { "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]11647 { "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]11648
11649 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11650 { "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]11651 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11652 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
11653 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
11654
11655 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11656 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11657 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
11658 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11659 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
11660 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11661 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
11662 { "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]11663 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11664 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11665}};
11666
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11667
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11668/* Note: must not be declared <const> as its list will be overwritten */
11669static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11670 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR},
11671 { "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]11672 { NULL, NULL, 0, 0, 0 },
11673}};
11674
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11675__attribute__((constructor))
11676static void __http_protocol_init(void)
11677{
11678 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11679 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11680 sample_register_convs(&sample_conv_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11681}
11682
11683
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]11684/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]11685 * Local variables:
11686 * c-indent-level: 8
11687 * c-basic-offset: 8
11688 * End:
11689 */