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git01.mediatek.com / haproxy / 660418d9b3272160508402dcc8f14259ad442adb / . / src / proto_http.c
blob: d6e37ed27393a55c43a1d70152eb9f556f547872 [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 Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2623 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2624 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2625 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]2626 session_inc_http_err_ctr(s);
2627 }
2628
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2629 txn->status = 400;
2630 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2631 msg->msg_state = HTTP_MSG_ERROR;
2632 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2633
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2634 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2635 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2636 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2637 if (s->listener->counters)
2638 s->listener->counters->failed_req++;
2639
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2640 if (!(s->flags & SN_FINST_MASK))
2641 s->flags |= SN_FINST_R;
2642 return 0;
2643 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2644
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2645 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2646 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]2647 if (!(s->flags & SN_ERR_MASK))
2648 s->flags |= SN_ERR_CLITO;
2649
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2650 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2651 goto failed_keep_alive;
2652
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2653 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2654 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2655 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]2656 session_inc_http_err_ctr(s);
2657 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2658 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2659 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2660 msg->msg_state = HTTP_MSG_ERROR;
2661 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2662
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2663 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2664 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2665 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2666 if (s->listener->counters)
2667 s->listener->counters->failed_req++;
2668
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2669 if (!(s->flags & SN_FINST_MASK))
2670 s->flags |= SN_FINST_R;
2671 return 0;
2672 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2673
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2674 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2675 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2676 if (!(s->flags & SN_ERR_MASK))
2677 s->flags |= SN_ERR_CLICL;
2678
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2679 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2680 goto failed_keep_alive;
2681
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2682 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2683 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]2684 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2685 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2686 msg->msg_state = HTTP_MSG_ERROR;
2687 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2688
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2689 session_inc_http_err_ctr(s);
2690 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2691 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2692 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2693 if (s->listener->counters)
2694 s->listener->counters->failed_req++;
2695
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2696 if (!(s->flags & SN_FINST_MASK))
2697 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2698 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2699 }
2700
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2701 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2702 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2703 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2704#ifdef TCP_QUICKACK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]2705 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]2706 /* We need more data, we have to re-enable quick-ack in case we
2707 * previously disabled it, otherwise we might cause the client
2708 * to delay next data.
2709 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2710 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]2711 }
2712#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2713
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2714 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2715 /* If the client starts to talk, let's fall back to
2716 * request timeout processing.
2717 */
2718 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2719 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2720 }
2721
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2722 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2723 if (!tick_isset(req->analyse_exp)) {
2724 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2725 (txn->flags & TX_WAIT_NEXT_RQ) &&
2726 tick_isset(s->be->timeout.httpka))
2727 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2728 else
2729 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2730 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2731
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2732 /* we're not ready yet */
2733 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2734
2735 failed_keep_alive:
2736 /* Here we process low-level errors for keep-alive requests. In
2737 * short, if the request is not the first one and it experiences
2738 * a timeout, read error or shutdown, we just silently close so
2739 * that the client can try again.
2740 */
2741 txn->status = 0;
2742 msg->msg_state = HTTP_MSG_RQBEFORE;
2743 req->analysers = 0;
2744 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2745 s->logs.level = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2746 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2747 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2748 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2749 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2750
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2751 /* OK now we have a complete HTTP request with indexed headers. Let's
2752 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2753 * 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]2754 * 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]2755 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2756 * byte after the last LF. msg->sov points to the first byte of data.
2757 * msg->eol cannot be trusted because it may have been left uninitialized
2758 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2759 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2760
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2761 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2762 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2763
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2764 if (txn->flags & TX_WAIT_NEXT_RQ) {
2765 /* kill the pending keep-alive timeout */
2766 txn->flags &= ~TX_WAIT_NEXT_RQ;
2767 req->analyse_exp = TICK_ETERNITY;
2768 }
2769
2770
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2771 /* Maybe we found in invalid header name while we were configured not
2772 * to block on that, so we have to capture it now.
2773 */
2774 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2775 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]2776
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2777 /*
2778 * 1: identify the method
2779 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2780 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2781
2782 /* we can make use of server redirect on GET and HEAD */
2783 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2784 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2785
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2786 /*
2787 * 2: check if the URI matches the monitor_uri.
2788 * We have to do this for every request which gets in, because
2789 * the monitor-uri is defined by the frontend.
2790 */
2791 if (unlikely((s->fe->monitor_uri_len != 0) &&
2792 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2793 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2794 s->fe->monitor_uri,
2795 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2796 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2797 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2798 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2799 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2800
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2801 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2802 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2803
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2804 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2805 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2806 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]2807
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2808 ret = acl_pass(ret);
2809 if (cond->pol == ACL_COND_UNLESS)
2810 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2811
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2812 if (ret) {
2813 /* we fail this request, let's return 503 service unavail */
2814 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2815 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2816 if (!(s->flags & SN_ERR_MASK))
2817 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2818 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2819 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2820 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2821
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2822 /* nothing to fail, let's reply normaly */
2823 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2824 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
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;
2828 }
2829
2830 /*
2831 * 3: Maybe we have to copy the original REQURI for the logs ?
2832 * Note: we cannot log anymore if the request has been
2833 * classified as invalid.
2834 */
2835 if (unlikely(s->logs.logwait & LW_REQ)) {
2836 /* we have a complete HTTP request that we must log */
2837 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2838 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2839
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2840 if (urilen >= REQURI_LEN)
2841 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2842 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2843 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2844
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2845 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2846 s->do_log(s);
2847 } else {
2848 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2849 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2850 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2851
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2852 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2853 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2854 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2855
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2856 /* ... and check if the request is HTTP/1.1 or above */
2857 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2858 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2859 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2860 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2861 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2862
2863 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2864 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]2865
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2866 /* if the frontend has "option http-use-proxy-header", we'll check if
2867 * we have what looks like a proxied connection instead of a connection,
2868 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2869 * Note that this is *not* RFC-compliant, however browsers and proxies
2870 * happen to do that despite being non-standard :-(
2871 * We consider that a request not beginning with either '/' or '*' is
2872 * a proxied connection, which covers both "scheme://location" and
2873 * CONNECT ip:port.
2874 */
2875 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2876 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2877 txn->flags |= TX_USE_PX_CONN;
2878
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2879 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2880 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2881
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2882 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2883 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2884 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2885 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2886
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]2887 /* 6: determine the transfer-length according to RFC2616 #4.4, updated
2888 * by RFC7230#3.3.3 :
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2889 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]2890 * The length of a message body is determined by one of the following
2891 * (in order of precedence):
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2892 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]2893 * 1. Any response to a HEAD request and any response with a 1xx
2894 * (Informational), 204 (No Content), or 304 (Not Modified) status
2895 * code is always terminated by the first empty line after the
2896 * header fields, regardless of the header fields present in the
2897 * message, and thus cannot contain a message body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2898 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]2899 * 2. Any 2xx (Successful) response to a CONNECT request implies that
2900 * the connection will become a tunnel immediately after the empty
2901 * line that concludes the header fields. A client MUST ignore any
2902 * Content-Length or Transfer-Encoding header fields received in
2903 * such a message.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2904 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]2905 * 3. If a Transfer-Encoding header field is present and the chunked
2906 * transfer coding (Section 4.1) is the final encoding, the message
2907 * body length is determined by reading and decoding the chunked
2908 * data until the transfer coding indicates the data is complete.
2909 *
2910 * If a Transfer-Encoding header field is present in a response and
2911 * the chunked transfer coding is not the final encoding, the
2912 * message body length is determined by reading the connection until
2913 * it is closed by the server. If a Transfer-Encoding header field
2914 * is present in a request and the chunked transfer coding is not
2915 * the final encoding, the message body length cannot be determined
2916 * reliably; the server MUST respond with the 400 (Bad Request)
2917 * status code and then close the connection.
2918 *
2919 * If a message is received with both a Transfer-Encoding and a
2920 * Content-Length header field, the Transfer-Encoding overrides the
2921 * Content-Length. Such a message might indicate an attempt to
2922 * perform request smuggling (Section 9.5) or response splitting
2923 * (Section 9.4) and ought to be handled as an error. A sender MUST
2924 * remove the received Content-Length field prior to forwarding such
2925 * a message downstream.
2926 *
2927 * 4. If a message is received without Transfer-Encoding and with
2928 * either multiple Content-Length header fields having differing
2929 * field-values or a single Content-Length header field having an
2930 * invalid value, then the message framing is invalid and the
2931 * recipient MUST treat it as an unrecoverable error. If this is a
2932 * request message, the server MUST respond with a 400 (Bad Request)
2933 * status code and then close the connection. If this is a response
2934 * message received by a proxy, the proxy MUST close the connection
2935 * to the server, discard the received response, and send a 502 (Bad
2936 * Gateway) response to the client. If this is a response message
2937 * received by a user agent, the user agent MUST close the
2938 * connection to the server and discard the received response.
2939 *
2940 * 5. If a valid Content-Length header field is present without
2941 * Transfer-Encoding, its decimal value defines the expected message
2942 * body length in octets. If the sender closes the connection or
2943 * the recipient times out before the indicated number of octets are
2944 * received, the recipient MUST consider the message to be
2945 * incomplete and close the connection.
2946 *
2947 * 6. If this is a request message and none of the above are true, then
2948 * the message body length is zero (no message body is present).
2949 *
2950 * 7. Otherwise, this is a response message without a declared message
2951 * body length, so the message body length is determined by the
2952 * number of octets received prior to the server closing the
2953 * connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2954 */
2955
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2956 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2957 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaue77bc172015-05-01 10:06:30 +0200[diff] [blame]2958 while (http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2959 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2960 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2961 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau49efa262015-05-01 10:09:49 +0200[diff] [blame]2962 /* chunked not last, return badreq */
2963 goto return_bad_req;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2964 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2965 }
2966
Willy Tarreaudfa3d922015-04-30 10:57:51 +0200[diff] [blame]2967 /* Chunked requests must have their content-length removed */
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2968 ctx.idx = 0;
Willy Tarreaudfa3d922015-04-30 10:57:51 +0200[diff] [blame]2969 if (msg->flags & HTTP_MSGF_TE_CHNK) {
2970 while (http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx))
2971 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2972 }
Willy Tarreau49efa262015-05-01 10:09:49 +0200[diff] [blame]2973 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]2974 signed long long cl;
2975
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2976 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2977 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2978 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2979 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2980
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2981 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2982 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2983 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2984 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2985
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2986 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2987 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2988 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2989 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2990
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2991 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2992 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2993 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2994 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2995
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2996 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2997 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2998 }
2999
Willy Tarreau49efa262015-05-01 10:09:49 +0200[diff] [blame]3000 /* even bodyless requests have a known length */
3001 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]3002
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3003 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
3004 * only change if both the request and the config reference something else.
3005 * Option httpclose by itself sets tunnel mode where headers are mangled.
3006 * However, if another mode is set, it will affect it (eg: server-close/
3007 * keep-alive + httpclose = close). Note that we avoid to redo the same work
3008 * if FE and BE have the same settings (common). The method consists in
3009 * checking if options changed between the two calls (implying that either
3010 * one is non-null, or one of them is non-null and we are there for the first
3011 * time.
3012 */
3013 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreau2e47a3a2014-09-30 18:44:22 +0200[diff] [blame]3014 ((s->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
3015 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]3016
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3017 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3018 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3019 req->analyse_exp = TICK_ETERNITY;
3020 return 1;
3021
3022 return_bad_req:
3023 /* We centralize bad requests processing here */
3024 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3025 /* we detected a parsing error. We want to archive this request
3026 * in the dedicated proxy area for later troubleshooting.
3027 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3028 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]3029 }
3030
3031 txn->req.msg_state = HTTP_MSG_ERROR;
3032 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3033 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3034
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3035 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3036 if (s->listener->counters)
3037 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3038
3039 return_prx_cond:
3040 if (!(s->flags & SN_ERR_MASK))
3041 s->flags |= SN_ERR_PRXCOND;
3042 if (!(s->flags & SN_FINST_MASK))
3043 s->flags |= SN_FINST_R;
3044
3045 req->analysers = 0;
3046 req->analyse_exp = TICK_ETERNITY;
3047 return 0;
3048}
3049
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3050
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3051/* This function prepares an applet to handle the stats. It can deal with the
3052 * "100-continue" expectation, check that admin rules are met for POST requests,
3053 * and program a response message if something was unexpected. It cannot fail
3054 * 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]3055 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3056 * s->target which is supposed to already point to the stats applet. The caller
3057 * is expected to have already assigned an appctx to the session.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3058 */
3059int http_handle_stats(struct session *s, struct channel *req)
3060{
3061 struct stats_admin_rule *stats_admin_rule;
3062 struct stream_interface *si = s->rep->prod;
3063 struct http_txn *txn = &s->txn;
3064 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3065 struct uri_auth *uri_auth = s->be->uri_auth;
3066 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3067 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3068
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3069 appctx = si_appctx(si);
3070 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3071 appctx->st1 = appctx->st2 = 0;
3072 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3073 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3074 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn.meth != HTTP_METH_HEAD))
3075 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3076
3077 uri = msg->chn->buf->p + msg->sl.rq.u;
3078 lookup = uri + uri_auth->uri_len;
3079
3080 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3081 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3082 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3083 break;
3084 }
3085 }
3086
3087 if (uri_auth->refresh) {
3088 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3089 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3090 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3091 break;
3092 }
3093 }
3094 }
3095
3096 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3097 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3098 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3099 break;
3100 }
3101 }
3102
3103 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3104 if (memcmp(h, ";st=", 4) == 0) {
3105 int i;
3106 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3107 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3108 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3109 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3110 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3111 break;
3112 }
3113 }
3114 break;
3115 }
3116 }
3117
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3118 appctx->ctx.stats.scope_str = 0;
3119 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3120 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3121 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3122 int itx = 0;
3123 const char *h2;
3124 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3125 const char *err;
3126
3127 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3128 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3129 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3130 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3131 itx++;
3132 h++;
3133 }
3134
3135 if (itx > STAT_SCOPE_TXT_MAXLEN)
3136 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3137 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3138
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3139 /* 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]3140 memcpy(scope_txt, h2, itx);
3141 scope_txt[itx] = '\0';
3142 err = invalid_char(scope_txt);
3143 if (err) {
3144 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3145 appctx->ctx.stats.scope_str = 0;
3146 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3147 }
3148 break;
3149 }
3150 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3151
3152 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3153 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3154 int ret = 1;
3155
3156 if (stats_admin_rule->cond) {
3157 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
3158 ret = acl_pass(ret);
3159 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3160 ret = !ret;
3161 }
3162
3163 if (ret) {
3164 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3165 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3166 break;
3167 }
3168 }
3169
3170 /* Was the status page requested with a POST ? */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3171 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3172 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3173 /* we'll need the request body, possibly after sending 100-continue */
3174 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3175 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3176 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3177 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3178 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3179 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3180 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3181 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3182 else {
3183 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3184 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3185 }
3186
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3187 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3188 return 1;
3189}
3190
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3191/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3192 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3193 */
3194static inline void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
3195{
3196#ifdef IP_TOS
3197 if (from.ss_family == AF_INET)
3198 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3199#endif
3200#ifdef IPV6_TCLASS
3201 if (from.ss_family == AF_INET6) {
3202 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
3203 /* v4-mapped addresses need IP_TOS */
3204 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3205 else
3206 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3207 }
3208#endif
3209}
3210
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3211static 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]3212 char* buf, struct hdr_idx* idx, struct list *fmt, struct my_regex *re,
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3213 struct hdr_ctx* ctx, int action)
3214{
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3215 int (*http_find_hdr_func)(const char *name, int len, char *sol,
3216 struct hdr_idx *idx, struct hdr_ctx *ctx);
3217 struct chunk *replace = get_trash_chunk();
3218 struct chunk *output = get_trash_chunk();
3219
3220 replace->len = build_logline(s, replace->str, replace->size, fmt);
3221 if (replace->len >= replace->size - 1)
3222 return -1;
3223
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3224 ctx->idx = 0;
3225
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3226 /* Choose the header browsing function. */
3227 switch (action) {
3228 case HTTP_REQ_ACT_REPLACE_VAL:
3229 case HTTP_RES_ACT_REPLACE_VAL:
3230 http_find_hdr_func = http_find_header2;
3231 break;
3232 case HTTP_REQ_ACT_REPLACE_HDR:
3233 case HTTP_RES_ACT_REPLACE_HDR:
3234 http_find_hdr_func = http_find_full_header2;
3235 break;
3236 default: /* impossible */
3237 return -1;
3238 }
3239
3240 while (http_find_hdr_func(name, name_len, buf, idx, ctx)) {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3241 struct hdr_idx_elem *hdr = idx->v + ctx->idx;
3242 int delta;
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3243 char *val = ctx->line + ctx->val;
3244 char* val_end = val + ctx->vlen;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3245
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3246 if (!regex_exec_match2(re, val, val_end-val, MAX_MATCH, pmatch))
3247 continue;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3248
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3249 output->len = exp_replace(output->str, output->size, val, replace->str, pmatch);
3250 if (output->len == -1)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3251 return -1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3252
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3253 delta = buffer_replace2(msg->chn->buf, val, val_end, output->str, output->len);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3254
3255 hdr->len += delta;
3256 http_msg_move_end(msg, delta);
Thierry FOURNIER06170c52015-03-16 23:23:53 +0100[diff] [blame]3257
3258 /* Adjust the length of the current value of the index. */
3259 ctx->vlen += delta;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3260 }
3261
3262 return 0;
3263}
3264
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3265/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3266 * transaction <txn>. Returns the verdict of the first rule that prevents
3267 * further processing of the request (auth, deny, ...), and defaults to
3268 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3269 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
3270 * on txn->flags if it encounters a tarpit rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3271 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3272enum rule_result
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3273http_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]3274{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3275 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3276 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3277 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3278 const char *auth_realm;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3279
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3280 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3281 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3282 continue;
3283
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3284 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3285 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3286 int ret;
3287
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3288 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]3289 ret = acl_pass(ret);
3290
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3291 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3292 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3293
3294 if (!ret) /* condition not matched */
3295 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3296 }
3297
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3298
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3299 switch (rule->action) {
3300 case HTTP_REQ_ACT_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3301 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3302
3303 case HTTP_REQ_ACT_DENY:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3304 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3305
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3306 case HTTP_REQ_ACT_TARPIT:
3307 txn->flags |= TX_CLTARPIT;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3308 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3309
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3310 case HTTP_REQ_ACT_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3311 /* Auth might be performed on regular http-req rules as well as on stats */
3312 auth_realm = rule->arg.auth.realm;
3313 if (!auth_realm) {
3314 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3315 auth_realm = STATS_DEFAULT_REALM;
3316 else
3317 auth_realm = px->id;
3318 }
3319 /* send 401/407 depending on whether we use a proxy or not. We still
3320 * count one error, because normal browsing won't significantly
3321 * increase the counter but brute force attempts will.
3322 */
3323 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3324 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
3325 stream_int_retnclose(&s->si[0], &trash);
3326 session_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3327 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3328
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3329 case HTTP_REQ_ACT_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3330 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3331 return HTTP_RULE_RES_BADREQ;
3332 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3333
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3334 case HTTP_REQ_ACT_SET_NICE:
3335 s->task->nice = rule->arg.nice;
3336 break;
3337
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3338 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3339 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3340 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]3341 break;
3342
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3343 case HTTP_REQ_ACT_SET_MARK:
3344#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3345 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3346 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]3347#endif
3348 break;
3349
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3350 case HTTP_REQ_ACT_SET_LOGL:
3351 s->logs.level = rule->arg.loglevel;
3352 break;
3353
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3354 case HTTP_REQ_ACT_REPLACE_HDR:
3355 case HTTP_REQ_ACT_REPLACE_VAL:
3356 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3357 txn->req.chn->buf->p, &txn->hdr_idx, &rule->arg.hdr_add.fmt,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3358 &rule->arg.hdr_add.re, &ctx, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3359 return HTTP_RULE_RES_BADREQ;
3360 break;
3361
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3362 case HTTP_REQ_ACT_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3363 ctx.idx = 0;
3364 /* remove all occurrences of the header */
3365 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3366 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3367 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3368 }
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3369 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3370
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3371 case HTTP_REQ_ACT_SET_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3372 case HTTP_REQ_ACT_ADD_HDR:
3373 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3374 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3375 trash.len = rule->arg.hdr_add.name_len;
3376 trash.str[trash.len++] = ':';
3377 trash.str[trash.len++] = ' ';
3378 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]3379
3380 if (rule->action == HTTP_REQ_ACT_SET_HDR) {
3381 /* remove all occurrences of the header */
3382 ctx.idx = 0;
3383 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3384 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3385 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3386 }
3387 }
3388
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3389 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3390 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3391
3392 case HTTP_REQ_ACT_DEL_ACL:
3393 case HTTP_REQ_ACT_DEL_MAP: {
3394 struct pat_ref *ref;
3395 char *key;
3396 int len;
3397
3398 /* collect reference */
3399 ref = pat_ref_lookup(rule->arg.map.ref);
3400 if (!ref)
3401 continue;
3402
3403 /* collect key */
3404 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3405 key = trash.str;
3406 key[len] = '\0';
3407
3408 /* perform update */
3409 /* returned code: 1=ok, 0=ko */
3410 pat_ref_delete(ref, key);
3411
3412 break;
3413 }
3414
3415 case HTTP_REQ_ACT_ADD_ACL: {
3416 struct pat_ref *ref;
3417 char *key;
3418 struct chunk *trash_key;
3419 int len;
3420
3421 trash_key = get_trash_chunk();
3422
3423 /* collect reference */
3424 ref = pat_ref_lookup(rule->arg.map.ref);
3425 if (!ref)
3426 continue;
3427
3428 /* collect key */
3429 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3430 key = trash_key->str;
3431 key[len] = '\0';
3432
3433 /* perform update */
3434 /* add entry only if it does not already exist */
3435 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3436 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3437
3438 break;
3439 }
3440
3441 case HTTP_REQ_ACT_SET_MAP: {
3442 struct pat_ref *ref;
3443 char *key, *value;
3444 struct chunk *trash_key, *trash_value;
3445 int len;
3446
3447 trash_key = get_trash_chunk();
3448 trash_value = get_trash_chunk();
3449
3450 /* collect reference */
3451 ref = pat_ref_lookup(rule->arg.map.ref);
3452 if (!ref)
3453 continue;
3454
3455 /* collect key */
3456 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3457 key = trash_key->str;
3458 key[len] = '\0';
3459
3460 /* collect value */
3461 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3462 value = trash_value->str;
3463 value[len] = '\0';
3464
3465 /* perform update */
3466 if (pat_ref_find_elt(ref, key) != NULL)
3467 /* update entry if it exists */
3468 pat_ref_set(ref, key, value, NULL);
3469 else
3470 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3471 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3472
3473 break;
3474 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3475
3476 case HTTP_REQ_ACT_CUSTOM_CONT:
3477 rule->action_ptr(rule, px, s, txn);
3478 break;
3479
3480 case HTTP_REQ_ACT_CUSTOM_STOP:
3481 rule->action_ptr(rule, px, s, txn);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3482 return HTTP_RULE_RES_DONE;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3483 }
3484 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3485
3486 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3487 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3488}
3489
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3490
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3491/* Executes the http-response rules <rules> for session <s>, proxy <px> and
3492 * transaction <txn>. Returns the first rule that prevents further processing
3493 * of the response (deny, ...) or NULL if it executed all rules or stopped
3494 * on an allow. It may set the TX_SVDENY on txn->flags if it encounters a deny
3495 * rule.
3496 */
3497static struct http_res_rule *
3498http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3499{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3500 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3501 struct http_res_rule *rule;
3502 struct hdr_ctx ctx;
3503
3504 list_for_each_entry(rule, rules, list) {
3505 if (rule->action >= HTTP_RES_ACT_MAX)
3506 continue;
3507
3508 /* check optional condition */
3509 if (rule->cond) {
3510 int ret;
3511
3512 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
3513 ret = acl_pass(ret);
3514
3515 if (rule->cond->pol == ACL_COND_UNLESS)
3516 ret = !ret;
3517
3518 if (!ret) /* condition not matched */
3519 continue;
3520 }
3521
3522
3523 switch (rule->action) {
3524 case HTTP_RES_ACT_ALLOW:
3525 return NULL; /* "allow" rules are OK */
3526
3527 case HTTP_RES_ACT_DENY:
3528 txn->flags |= TX_SVDENY;
3529 return rule;
3530
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3531 case HTTP_RES_ACT_SET_NICE:
3532 s->task->nice = rule->arg.nice;
3533 break;
3534
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3535 case HTTP_RES_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3536 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3537 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]3538 break;
3539
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3540 case HTTP_RES_ACT_SET_MARK:
3541#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3542 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3543 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]3544#endif
3545 break;
3546
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3547 case HTTP_RES_ACT_SET_LOGL:
3548 s->logs.level = rule->arg.loglevel;
3549 break;
3550
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3551 case HTTP_RES_ACT_REPLACE_HDR:
3552 case HTTP_RES_ACT_REPLACE_VAL:
3553 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3554 txn->rsp.chn->buf->p, &txn->hdr_idx, &rule->arg.hdr_add.fmt,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3555 &rule->arg.hdr_add.re, &ctx, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3556 return NULL; /* note: we should report an error here */
3557 break;
3558
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3559 case HTTP_RES_ACT_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3560 ctx.idx = 0;
3561 /* remove all occurrences of the header */
3562 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3563 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3564 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3565 }
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3566 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3567
Willy Tarreaufcf75d22015-01-21 20:39:27 +0100[diff] [blame]3568 case HTTP_RES_ACT_SET_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3569 case HTTP_RES_ACT_ADD_HDR:
3570 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3571 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3572 trash.len = rule->arg.hdr_add.name_len;
3573 trash.str[trash.len++] = ':';
3574 trash.str[trash.len++] = ' ';
3575 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]3576
3577 if (rule->action == HTTP_RES_ACT_SET_HDR) {
3578 /* remove all occurrences of the header */
3579 ctx.idx = 0;
3580 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3581 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3582 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3583 }
3584 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3585 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3586 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3587
3588 case HTTP_RES_ACT_DEL_ACL:
3589 case HTTP_RES_ACT_DEL_MAP: {
3590 struct pat_ref *ref;
3591 char *key;
3592 int len;
3593
3594 /* collect reference */
3595 ref = pat_ref_lookup(rule->arg.map.ref);
3596 if (!ref)
3597 continue;
3598
3599 /* collect key */
3600 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3601 key = trash.str;
3602 key[len] = '\0';
3603
3604 /* perform update */
3605 /* returned code: 1=ok, 0=ko */
3606 pat_ref_delete(ref, key);
3607
3608 break;
3609 }
3610
3611 case HTTP_RES_ACT_ADD_ACL: {
3612 struct pat_ref *ref;
3613 char *key;
3614 struct chunk *trash_key;
3615 int len;
3616
3617 trash_key = get_trash_chunk();
3618
3619 /* collect reference */
3620 ref = pat_ref_lookup(rule->arg.map.ref);
3621 if (!ref)
3622 continue;
3623
3624 /* collect key */
3625 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3626 key = trash_key->str;
3627 key[len] = '\0';
3628
3629 /* perform update */
3630 /* check if the entry already exists */
3631 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3632 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3633
3634 break;
3635 }
3636
3637 case HTTP_RES_ACT_SET_MAP: {
3638 struct pat_ref *ref;
3639 char *key, *value;
3640 struct chunk *trash_key, *trash_value;
3641 int len;
3642
3643 trash_key = get_trash_chunk();
3644 trash_value = get_trash_chunk();
3645
3646 /* collect reference */
3647 ref = pat_ref_lookup(rule->arg.map.ref);
3648 if (!ref)
3649 continue;
3650
3651 /* collect key */
3652 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3653 key = trash_key->str;
3654 key[len] = '\0';
3655
3656 /* collect value */
3657 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3658 value = trash_value->str;
3659 value[len] = '\0';
3660
3661 /* perform update */
3662 if (pat_ref_find_elt(ref, key) != NULL)
3663 /* update entry if it exists */
3664 pat_ref_set(ref, key, value, NULL);
3665 else
3666 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3667 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3668
3669 break;
3670 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3671
3672 case HTTP_RES_ACT_CUSTOM_CONT:
3673 rule->action_ptr(rule, px, s, txn);
3674 break;
3675
3676 case HTTP_RES_ACT_CUSTOM_STOP:
3677 rule->action_ptr(rule, px, s, txn);
3678 return rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3679 }
3680 }
3681
3682 /* we reached the end of the rules, nothing to report */
3683 return NULL;
3684}
3685
3686
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3687/* Perform an HTTP redirect based on the information in <rule>. The function
3688 * returns non-zero on success, or zero in case of a, irrecoverable error such
3689 * as too large a request to build a valid response.
3690 */
3691static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3692{
3693 struct http_msg *msg = &txn->req;
3694 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3695 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3696
3697 /* build redirect message */
3698 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3699 case 308:
3700 msg_fmt = HTTP_308;
3701 break;
3702 case 307:
3703 msg_fmt = HTTP_307;
3704 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3705 case 303:
3706 msg_fmt = HTTP_303;
3707 break;
3708 case 301:
3709 msg_fmt = HTTP_301;
3710 break;
3711 case 302:
3712 default:
3713 msg_fmt = HTTP_302;
3714 break;
3715 }
3716
3717 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3718 return 0;
3719
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3720 location = trash.str + trash.len;
3721
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3722 switch(rule->type) {
3723 case REDIRECT_TYPE_SCHEME: {
3724 const char *path;
3725 const char *host;
3726 struct hdr_ctx ctx;
3727 int pathlen;
3728 int hostlen;
3729
3730 host = "";
3731 hostlen = 0;
3732 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]3733 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]3734 host = ctx.line + ctx.val;
3735 hostlen = ctx.vlen;
3736 }
3737
3738 path = http_get_path(txn);
3739 /* build message using path */
3740 if (path) {
3741 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3742 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3743 int qs = 0;
3744 while (qs < pathlen) {
3745 if (path[qs] == '?') {
3746 pathlen = qs;
3747 break;
3748 }
3749 qs++;
3750 }
3751 }
3752 } else {
3753 path = "/";
3754 pathlen = 1;
3755 }
3756
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3757 if (rule->rdr_str) { /* this is an old "redirect" rule */
3758 /* check if we can add scheme + "://" + host + path */
3759 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3760 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3761
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3762 /* add scheme */
3763 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3764 trash.len += rule->rdr_len;
3765 }
3766 else {
3767 /* add scheme with executing log format */
3768 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]3769
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3770 /* check if we can add scheme + "://" + host + path */
3771 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3772 return 0;
3773 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3774 /* add "://" */
3775 memcpy(trash.str + trash.len, "://", 3);
3776 trash.len += 3;
3777
3778 /* add host */
3779 memcpy(trash.str + trash.len, host, hostlen);
3780 trash.len += hostlen;
3781
3782 /* add path */
3783 memcpy(trash.str + trash.len, path, pathlen);
3784 trash.len += pathlen;
3785
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3786 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3787 if (trash.len && trash.str[trash.len - 1] != '/' &&
3788 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3789 if (trash.len > trash.size - 5)
3790 return 0;
3791 trash.str[trash.len] = '/';
3792 trash.len++;
3793 }
3794
3795 break;
3796 }
3797 case REDIRECT_TYPE_PREFIX: {
3798 const char *path;
3799 int pathlen;
3800
3801 path = http_get_path(txn);
3802 /* build message using path */
3803 if (path) {
3804 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3805 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3806 int qs = 0;
3807 while (qs < pathlen) {
3808 if (path[qs] == '?') {
3809 pathlen = qs;
3810 break;
3811 }
3812 qs++;
3813 }
3814 }
3815 } else {
3816 path = "/";
3817 pathlen = 1;
3818 }
3819
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3820 if (rule->rdr_str) { /* this is an old "redirect" rule */
3821 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3822 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3823
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3824 /* add prefix. Note that if prefix == "/", we don't want to
3825 * add anything, otherwise it makes it hard for the user to
3826 * configure a self-redirection.
3827 */
3828 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3829 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3830 trash.len += rule->rdr_len;
3831 }
3832 }
3833 else {
3834 /* add prefix with executing log format */
3835 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3836
3837 /* Check length */
3838 if (trash.len + pathlen > trash.size - 4)
3839 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3840 }
3841
3842 /* add path */
3843 memcpy(trash.str + trash.len, path, pathlen);
3844 trash.len += pathlen;
3845
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3846 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3847 if (trash.len && trash.str[trash.len - 1] != '/' &&
3848 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3849 if (trash.len > trash.size - 5)
3850 return 0;
3851 trash.str[trash.len] = '/';
3852 trash.len++;
3853 }
3854
3855 break;
3856 }
3857 case REDIRECT_TYPE_LOCATION:
3858 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3859 if (rule->rdr_str) { /* this is an old "redirect" rule */
3860 if (trash.len + rule->rdr_len > trash.size - 4)
3861 return 0;
3862
3863 /* add location */
3864 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3865 trash.len += rule->rdr_len;
3866 }
3867 else {
3868 /* add location with executing log format */
3869 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]3870
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3871 /* Check left length */
3872 if (trash.len > trash.size - 4)
3873 return 0;
3874 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3875 break;
3876 }
3877
3878 if (rule->cookie_len) {
3879 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3880 trash.len += 14;
3881 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3882 trash.len += rule->cookie_len;
3883 memcpy(trash.str + trash.len, "\r\n", 2);
3884 trash.len += 2;
3885 }
3886
3887 /* add end of headers and the keep-alive/close status.
3888 * We may choose to set keep-alive if the Location begins
3889 * with a slash, because the client will come back to the
3890 * same server.
3891 */
3892 txn->status = rule->code;
3893 /* let's log the request time */
3894 s->logs.tv_request = now;
3895
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3896 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3897 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3898 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3899 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3900 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3901 /* keep-alive possible */
3902 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3903 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3904 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3905 trash.len += 30;
3906 } else {
3907 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3908 trash.len += 24;
3909 }
3910 }
3911 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3912 trash.len += 4;
3913 bo_inject(txn->rsp.chn, trash.str, trash.len);
3914 /* "eat" the request */
3915 bi_fast_delete(txn->req.chn->buf, msg->sov);
Willy Tarreau6d8bac72014-04-25 12:19:32 +0200[diff] [blame]3916 msg->next -= msg->sov;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3917 msg->sov = 0;
3918 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3919 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3920 txn->req.msg_state = HTTP_MSG_CLOSED;
3921 txn->rsp.msg_state = HTTP_MSG_DONE;
3922 } else {
3923 /* keep-alive not possible */
3924 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3925 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3926 trash.len += 29;
3927 } else {
3928 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3929 trash.len += 23;
3930 }
3931 stream_int_retnclose(txn->req.chn->prod, &trash);
3932 txn->req.chn->analysers = 0;
3933 }
3934
3935 if (!(s->flags & SN_ERR_MASK))
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3936 s->flags |= SN_ERR_LOCAL;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3937 if (!(s->flags & SN_FINST_MASK))
3938 s->flags |= SN_FINST_R;
3939
3940 return 1;
3941}
3942
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3943/* This stream analyser runs all HTTP request processing which is common to
3944 * frontends and backends, which means blocking ACLs, filters, connection-close,
3945 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3946 * 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]3947 * either needs more data or wants to immediately abort the request (eg: deny,
3948 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3949 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3950int 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]3951{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3952 struct http_txn *txn = &s->txn;
3953 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3954 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3955 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3956 enum rule_result verdict;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3957
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3958 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3959 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3960 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3961 return 0;
3962 }
3963
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3964 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]3965 now_ms, __FUNCTION__,
3966 s,
3967 req,
3968 req->rex, req->wex,
3969 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3970 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3971 req->analysers);
3972
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]3973 /* just in case we have some per-backend tracking */
3974 session_inc_be_http_req_ctr(s);
3975
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3976 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3977 if (!LIST_ISEMPTY(&px->http_req_rules)) {
3978 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, txn);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]3979
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3980 switch (verdict) {
3981 case HTTP_RULE_RES_CONT:
3982 case HTTP_RULE_RES_STOP: /* nothing to do */
3983 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3984
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3985 case HTTP_RULE_RES_DENY: /* deny or tarpit */
3986 if (txn->flags & TX_CLTARPIT)
3987 goto tarpit;
3988 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3989
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3990 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
3991 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3992
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3993 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]3994 goto done;
3995
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3996 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
3997 goto return_bad_req;
3998 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]3999 }
4000
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4001 /* OK at this stage, we know that the request was accepted according to
4002 * the http-request rules, we can check for the stats. Note that the
4003 * URI is detected *before* the req* rules in order not to be affected
4004 * by a possible reqrep, while they are processed *after* so that a
4005 * reqdeny can still block them. This clearly needs to change in 1.6!
4006 */
4007 if (stats_check_uri(s->rep->prod, txn, px)) {
4008 s->target = &http_stats_applet.obj_type;
4009 if (unlikely(!stream_int_register_handler(s->rep->prod, objt_applet(s->target)))) {
4010 txn->status = 500;
4011 s->logs.tv_request = now;
4012 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4013
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4014 if (!(s->flags & SN_ERR_MASK))
4015 s->flags |= SN_ERR_RESOURCE;
4016 goto return_prx_cond;
4017 }
4018
4019 /* parse the whole stats request and extract the relevant information */
4020 http_handle_stats(s, req);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4021 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, txn);
4022 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4023
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4024 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4025 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4026
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4027 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4028 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4029 }
4030
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4031 /* evaluate the req* rules except reqadd */
4032 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4033 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4034 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4035
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4036 if (txn->flags & TX_CLDENY)
4037 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4038
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4039 if (txn->flags & TX_CLTARPIT)
4040 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4041 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4042
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4043 /* add request headers from the rule sets in the same order */
4044 list_for_each_entry(wl, &px->req_add, list) {
4045 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]4046 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]4047 ret = acl_pass(ret);
4048 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4049 ret = !ret;
4050 if (!ret)
4051 continue;
4052 }
4053
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4054 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4055 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4056 }
4057
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4058
4059 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4060 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4061 /* process the stats request now */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4062 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
4063 s->fe->fe_counters.intercepted_req++;
4064
4065 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
4066 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
4067 if (!(s->flags & SN_FINST_MASK))
4068 s->flags |= SN_FINST_R;
4069
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4070 /* we may want to compress the stats page */
4071 if (s->fe->comp || s->be->comp)
4072 select_compression_request_header(s, req->buf);
4073
4074 /* 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]4075 req->analysers = (req->analysers & AN_REQ_HTTP_BODY) | AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4076 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4077 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4078
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4079 /* check whether we have some ACLs set to redirect this request */
4080 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4081 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4082 int ret;
4083
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]4084 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]4085 ret = acl_pass(ret);
4086 if (rule->cond->pol == ACL_COND_UNLESS)
4087 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4088 if (!ret)
4089 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4090 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4091 if (!http_apply_redirect_rule(rule, s, txn))
4092 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4093 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4094 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4095
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4096 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4097 * If this happens, then the data will not come immediately, so we must
4098 * send all what we have without waiting. Note that due to the small gain
4099 * 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]4100 * 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]4101 * itself once used.
4102 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4103 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4104
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4105 done: /* done with this analyser, continue with next ones that the calling
4106 * points will have set, if any.
4107 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4108 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIERfc566b52014-08-22 06:55:26 +0200[diff] [blame]4109 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4110 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4111 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4112
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4113 tarpit:
4114 /* When a connection is tarpitted, we use the tarpit timeout,
4115 * which may be the same as the connect timeout if unspecified.
4116 * If unset, then set it to zero because we really want it to
4117 * eventually expire. We build the tarpit as an analyser.
4118 */
4119 channel_erase(s->req);
4120
4121 /* wipe the request out so that we can drop the connection early
4122 * if the client closes first.
4123 */
4124 channel_dont_connect(req);
4125 req->analysers = 0; /* remove switching rules etc... */
4126 req->analysers |= AN_REQ_HTTP_TARPIT;
4127 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4128 if (!req->analyse_exp)
4129 req->analyse_exp = tick_add(now_ms, 0);
4130 session_inc_http_err_ctr(s);
4131 s->fe->fe_counters.denied_req++;
4132 if (s->fe != s->be)
4133 s->be->be_counters.denied_req++;
4134 if (s->listener->counters)
4135 s->listener->counters->denied_req++;
Thierry FOURNIERfc566b52014-08-22 06:55:26 +0200[diff] [blame]4136 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4137
4138 deny: /* this request was blocked (denied) */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4139 txn->flags |= TX_CLDENY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4140 txn->status = 403;
4141 s->logs.tv_request = now;
4142 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
4143 session_inc_http_err_ctr(s);
4144 s->fe->fe_counters.denied_req++;
4145 if (s->fe != s->be)
4146 s->be->be_counters.denied_req++;
4147 if (s->listener->counters)
4148 s->listener->counters->denied_req++;
4149 goto return_prx_cond;
4150
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4151 return_bad_req:
4152 /* We centralize bad requests processing here */
4153 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4154 /* we detected a parsing error. We want to archive this request
4155 * in the dedicated proxy area for later troubleshooting.
4156 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4157 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]4158 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4159
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4160 txn->req.msg_state = HTTP_MSG_ERROR;
4161 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4162 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4163
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4164 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4165 if (s->listener->counters)
4166 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4167
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4168 return_prx_cond:
4169 if (!(s->flags & SN_ERR_MASK))
4170 s->flags |= SN_ERR_PRXCOND;
4171 if (!(s->flags & SN_FINST_MASK))
4172 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4173
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4174 req->analysers = 0;
4175 req->analyse_exp = TICK_ETERNITY;
4176 return 0;
4177}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4178
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4179/* This function performs all the processing enabled for the current request.
4180 * It returns 1 if the processing can continue on next analysers, or zero if it
4181 * needs more data, encounters an error, or wants to immediately abort the
4182 * request. It relies on buffers flags, and updates s->req->analysers.
4183 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4184int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4185{
4186 struct http_txn *txn = &s->txn;
4187 struct http_msg *msg = &txn->req;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4188 struct connection *cli_conn = objt_conn(req->prod->end);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4189
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4190 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4191 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4192 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4193 return 0;
4194 }
4195
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4196 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]4197 now_ms, __FUNCTION__,
4198 s,
4199 req,
4200 req->rex, req->wex,
4201 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4202 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4203 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4204
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]4205 if (s->fe->comp || s->be->comp)
4206 select_compression_request_header(s, req->buf);
4207
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4208 /*
4209 * Right now, we know that we have processed the entire headers
4210 * and that unwanted requests have been filtered out. We can do
4211 * whatever we want with the remaining request. Also, now we
4212 * may have separate values for ->fe, ->be.
4213 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4214
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4215 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4216 * If HTTP PROXY is set we simply get remote server address parsing
4217 * incoming request. Note that this requires that a connection is
4218 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4219 */
4220 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4221 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4222 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4223
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4224 /* Note that for now we don't reuse existing proxy connections */
4225 if (unlikely((conn = si_alloc_conn(req->cons, 0)) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4226 txn->req.msg_state = HTTP_MSG_ERROR;
4227 txn->status = 500;
4228 req->analysers = 0;
4229 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
4230
4231 if (!(s->flags & SN_ERR_MASK))
4232 s->flags |= SN_ERR_RESOURCE;
4233 if (!(s->flags & SN_FINST_MASK))
4234 s->flags |= SN_FINST_R;
4235
4236 return 0;
4237 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4238
4239 path = http_get_path(txn);
4240 url2sa(req->buf->p + msg->sl.rq.u,
4241 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4242 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4243 /* if the path was found, we have to remove everything between
4244 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4245 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4246 * u_l characters by a single "/".
4247 */
4248 if (path) {
4249 char *cur_ptr = req->buf->p;
4250 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4251 int delta;
4252
4253 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4254 http_msg_move_end(&txn->req, delta);
4255 cur_end += delta;
4256 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4257 goto return_bad_req;
4258 }
4259 else {
4260 char *cur_ptr = req->buf->p;
4261 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4262 int delta;
4263
4264 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4265 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4266 http_msg_move_end(&txn->req, delta);
4267 cur_end += delta;
4268 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4269 goto return_bad_req;
4270 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4271 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4272
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4273 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4274 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4275 * Note that doing so might move headers in the request, but
4276 * the fields will stay coherent and the URI will not move.
4277 * This should only be performed in the backend.
4278 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4279 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4280 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
4281 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4282
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4283 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4284 * 8: the appsession cookie was looked up very early in 1.2,
4285 * so let's do the same now.
4286 */
4287
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4288 /* It needs to look into the URI unless persistence must be ignored */
4289 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4290 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]4291 }
4292
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4293 /* add unique-id if "header-unique-id" is specified */
4294
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4295 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
4296 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4297 goto return_bad_req;
4298 s->unique_id[0] = '\0';
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4299 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4300 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4301
4302 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4303 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
4304 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4305 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4306 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]4307 goto return_bad_req;
4308 }
4309
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4310 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4311 * 9: add X-Forwarded-For if either the frontend or the backend
4312 * asks for it.
4313 */
4314 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4315 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4316 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]4317 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
4318 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]4319 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4320 /* The header is set to be added only if none is present
4321 * and we found it, so don't do anything.
4322 */
4323 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4324 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4325 /* Add an X-Forwarded-For header unless the source IP is
4326 * in the 'except' network range.
4327 */
4328 if ((!s->fe->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4329 (((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]4330 != s->fe->except_net.s_addr) &&
4331 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4332 (((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]4333 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4334 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4335 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4336 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4337
4338 /* Note: we rely on the backend to get the header name to be used for
4339 * x-forwarded-for, because the header is really meant for the backends.
4340 * However, if the backend did not specify any option, we have to rely
4341 * on the frontend's header name.
4342 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4343 if (s->be->fwdfor_hdr_len) {
4344 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4345 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4346 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4347 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4348 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4349 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4350 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]4351
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4352 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]4353 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4354 }
4355 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4356 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4357 /* FIXME: for the sake of completeness, we should also support
4358 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4359 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4360 int len;
4361 char pn[INET6_ADDRSTRLEN];
4362 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4363 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4364 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4365
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]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.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]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);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4374 } else {
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);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4377 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4378 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[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 Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4381 goto return_bad_req;
4382 }
4383 }
4384
4385 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4386 * 10: add X-Original-To if either the frontend or the backend
4387 * asks for it.
4388 */
4389 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
4390
4391 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4392 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4393 /* Add an X-Original-To header unless the destination IP is
4394 * in the 'except' network range.
4395 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4396 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4397
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4398 if (cli_conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4399 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4400 (((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]4401 != s->fe->except_to.s_addr) &&
4402 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4403 (((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]4404 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4405 int len;
4406 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4407 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4408
4409 /* Note: we rely on the backend to get the header name to be used for
4410 * x-original-to, because the header is really meant for the backends.
4411 * However, if the backend did not specify any option, we have to rely
4412 * on the frontend's header name.
4413 */
4414 if (s->be->orgto_hdr_len) {
4415 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4416 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4417 } else {
4418 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4419 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4420 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4421 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]4422
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4423 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]4424 goto return_bad_req;
4425 }
4426 }
4427 }
4428
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4429 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4430 * If an "Upgrade" token is found, the header is left untouched in order not to have
4431 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4432 * "Upgrade" is present in the Connection header.
4433 */
4434 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4435 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4436 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4437 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4438 unsigned int want_flags = 0;
4439
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4440 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4441 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4442 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4443 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4444 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4445 want_flags |= TX_CON_CLO_SET;
4446 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4447 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4448 ((s->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
4449 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4450 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4451 want_flags |= TX_CON_KAL_SET;
4452 }
4453
4454 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4455 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4456 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4457
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4458
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4459 /* If we have no server assigned yet and we're balancing on url_param
4460 * with a POST request, we may be interested in checking the body for
4461 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4462 */
4463 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
4464 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4465 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4466 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4467 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4468 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4469
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4470 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4471 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4472#ifdef TCP_QUICKACK
4473 /* We expect some data from the client. Unless we know for sure
4474 * we already have a full request, we have to re-enable quick-ack
4475 * in case we previously disabled it, otherwise we might cause
4476 * the client to delay further data.
4477 */
4478 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4479 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4480 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4481 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4482 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4483#endif
4484 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4485
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4486 /*************************************************************
4487 * OK, that's finished for the headers. We have done what we *
4488 * could. Let's switch to the DATA state. *
4489 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4490 req->analyse_exp = TICK_ETERNITY;
4491 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4492
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4493 /* if the server closes the connection, we want to immediately react
4494 * and close the socket to save packets and syscalls.
4495 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4496 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
4497 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4498
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4499 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4500 /* OK let's go on with the BODY now */
4501 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4502
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4503 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4504 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4505 /* we detected a parsing error. We want to archive this request
4506 * in the dedicated proxy area for later troubleshooting.
4507 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4508 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]4509 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4510
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4511 txn->req.msg_state = HTTP_MSG_ERROR;
4512 txn->status = 400;
4513 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4514 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4515
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4516 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4517 if (s->listener->counters)
4518 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4519
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4520 if (!(s->flags & SN_ERR_MASK))
4521 s->flags |= SN_ERR_PRXCOND;
4522 if (!(s->flags & SN_FINST_MASK))
4523 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4524 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4525}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4526
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4527/* This function is an analyser which processes the HTTP tarpit. It always
4528 * returns zero, at the beginning because it prevents any other processing
4529 * from occurring, and at the end because it terminates the request.
4530 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4531int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4532{
4533 struct http_txn *txn = &s->txn;
4534
4535 /* This connection is being tarpitted. The CLIENT side has
4536 * already set the connect expiration date to the right
4537 * timeout. We just have to check that the client is still
4538 * there and that the timeout has not expired.
4539 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4540 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4541 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4542 !tick_is_expired(req->analyse_exp, now_ms))
4543 return 0;
4544
4545 /* We will set the queue timer to the time spent, just for
4546 * logging purposes. We fake a 500 server error, so that the
4547 * attacker will not suspect his connection has been tarpitted.
4548 * It will not cause trouble to the logs because we can exclude
4549 * the tarpitted connections by filtering on the 'PT' status flags.
4550 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4551 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4552
4553 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4554 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4555 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4556
4557 req->analysers = 0;
4558 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4559
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4560 if (!(s->flags & SN_ERR_MASK))
4561 s->flags |= SN_ERR_PRXCOND;
4562 if (!(s->flags & SN_FINST_MASK))
4563 s->flags |= SN_FINST_T;
4564 return 0;
4565}
4566
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4567/* This function is an analyser which waits for the HTTP request body. It waits
4568 * for either the buffer to be full, or the full advertised contents to have
4569 * reached the buffer. It must only be called after the standard HTTP request
4570 * processing has occurred, because it expects the request to be parsed and will
4571 * look for the Expect header. It may send a 100-Continue interim response. It
4572 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4573 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4574 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4575 */
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4576int http_wait_for_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4577{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4578 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4579 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4580
4581 /* We have to parse the HTTP request body to find any required data.
4582 * "balance url_param check_post" should have been the only way to get
4583 * into this. We were brought here after HTTP header analysis, so all
4584 * related structures are ready.
4585 */
4586
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4587 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4588 /* This is the first call */
4589 if (msg->msg_state < HTTP_MSG_BODY)
4590 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4591
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4592 if (msg->msg_state < HTTP_MSG_100_SENT) {
4593 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4594 * send an HTTP/1.1 100 Continue intermediate response.
4595 */
4596 if (msg->flags & HTTP_MSGF_VER_11) {
4597 struct hdr_ctx ctx;
4598 ctx.idx = 0;
4599 /* Expect is allowed in 1.1, look for it */
4600 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4601 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
4602 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
4603 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4604 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4605 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4606 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4607
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4608 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4609 * req->buf->p still points to the beginning of the message. We
4610 * must save the body in msg->next because it survives buffer
4611 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4612 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4613 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4614
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4615 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4616 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4617 else
4618 msg->msg_state = HTTP_MSG_DATA;
4619 }
4620
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4621 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4622 /* We're in content-length mode, we just have to wait for enough data. */
4623 if (req->buf->i - msg->sov < msg->body_len)
4624 goto missing_data;
4625
4626 /* OK we have everything we need now */
4627 goto http_end;
4628 }
4629
4630 /* OK here we're parsing a chunked-encoded message */
4631
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4632 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4633 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4634 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4635 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4636 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4637 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4638
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4639 if (!ret)
4640 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4641 else if (ret < 0) {
4642 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4643 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4644 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4645 }
4646
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4647 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4648 * We have the first data byte is in msg->sov. We're waiting for at
Willy Tarreau226071e2014-04-10 11:55:45 +0200[diff] [blame]4649 * least a whole chunk or the whole content length bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4650 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4651 if (msg->msg_state == HTTP_MSG_TRAILERS)
4652 goto http_end;
4653
Willy Tarreau226071e2014-04-10 11:55:45 +0200[diff] [blame]4654 if (req->buf->i - msg->sov >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4655 goto http_end;
4656
4657 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4658 /* we get here if we need to wait for more data. If the buffer is full,
4659 * we have the maximum we can expect.
4660 */
4661 if (buffer_full(req->buf, global.tune.maxrewrite))
4662 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4663
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4664 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4665 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4666 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4667
4668 if (!(s->flags & SN_ERR_MASK))
4669 s->flags |= SN_ERR_CLITO;
4670 if (!(s->flags & SN_FINST_MASK))
4671 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4672 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4673 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4674
4675 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4676 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4677 /* Not enough data. We'll re-use the http-request
4678 * timeout here. Ideally, we should set the timeout
4679 * relative to the accept() date. We just set the
4680 * request timeout once at the beginning of the
4681 * request.
4682 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4683 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4684 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4685 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4686 return 0;
4687 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4688
4689 http_end:
4690 /* The situation will not evolve, so let's give up on the analysis. */
4691 s->logs.tv_request = now; /* update the request timer to reflect full request */
4692 req->analysers &= ~an_bit;
4693 req->analyse_exp = TICK_ETERNITY;
4694 return 1;
4695
4696 return_bad_req: /* let's centralize all bad requests */
4697 txn->req.msg_state = HTTP_MSG_ERROR;
4698 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4699 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4700
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4701 if (!(s->flags & SN_ERR_MASK))
4702 s->flags |= SN_ERR_PRXCOND;
4703 if (!(s->flags & SN_FINST_MASK))
4704 s->flags |= SN_FINST_R;
4705
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4706 return_err_msg:
4707 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4708 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4709 if (s->listener->counters)
4710 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4711 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4712}
4713
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4714/* send a server's name with an outgoing request over an established connection.
4715 * Note: this function is designed to be called once the request has been scheduled
4716 * for being forwarded. This is the reason why it rewinds the buffer before
4717 * proceeding.
4718 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4719int 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]4720
4721 struct hdr_ctx ctx;
4722
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4723 char *hdr_name = be->server_id_hdr_name;
4724 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4725 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4726 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4727 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4728
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4729 ctx.idx = 0;
4730
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4731 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4732 if (old_o) {
4733 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4734 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4735 txn->req.next += old_o;
4736 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4737 }
4738
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4739 old_i = chn->buf->i;
4740 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]4741 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4742 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4743 }
4744
4745 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4746 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4747 memcpy(hdr_val, hdr_name, hdr_name_len);
4748 hdr_val += hdr_name_len;
4749 *hdr_val++ = ':';
4750 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4751 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4752 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]4753
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4754 if (old_o) {
4755 /* If this was a forwarded request, we must readjust the amount of
4756 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4757 * variations. Note that the current state is >= HTTP_MSG_BODY,
4758 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4759 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4760 old_o += chn->buf->i - old_i;
4761 b_adv(chn->buf, old_o);
4762 txn->req.next -= old_o;
4763 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4764 }
4765
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4766 return 0;
4767}
4768
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4769/* Terminate current transaction and prepare a new one. This is very tricky
4770 * right now but it works.
4771 */
4772void http_end_txn_clean_session(struct session *s)
4773{
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4774 int prev_status = s->txn.status;
4775
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4776 /* FIXME: We need a more portable way of releasing a backend's and a
4777 * server's connections. We need a safer way to reinitialize buffer
4778 * flags. We also need a more accurate method for computing per-request
4779 * data.
4780 */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4781
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4782 /* unless we're doing keep-alive, we want to quickly close the connection
4783 * to the server.
4784 */
4785 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4786 !si_conn_ready(s->req->cons)) {
4787 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4788 si_shutr(s->req->cons);
4789 si_shutw(s->req->cons);
4790 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4791
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4792 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4793 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4794 if (unlikely(s->srv_conn))
4795 sess_change_server(s, NULL);
4796 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4797
4798 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4799 session_process_counters(s);
4800
4801 if (s->txn.status) {
4802 int n;
4803
4804 n = s->txn.status / 100;
4805 if (n < 1 || n > 5)
4806 n = 0;
4807
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4808 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4809 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4810 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4811 s->fe->fe_counters.p.http.comp_rsp++;
4812 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4813 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4814 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4815 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4816 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4817 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4818 s->be->be_counters.p.http.comp_rsp++;
4819 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4820 }
4821
4822 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4823 s->logs.bytes_in -= s->req->buf->i;
4824 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4825
4826 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4827 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4828 !(s->flags & SN_MONITOR) &&
4829 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4830 s->do_log(s);
4831 }
4832
Willy Tarreauc177ea72014-06-25 15:36:04 +0200[diff] [blame]4833 /* stop tracking content-based counters */
4834 session_stop_content_counters(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]4835 session_update_time_stats(s);
4836
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4837 s->logs.accept_date = date; /* user-visible date for logging */
4838 s->logs.tv_accept = now; /* corrected date for internal use */
4839 tv_zero(&s->logs.tv_request);
4840 s->logs.t_queue = -1;
4841 s->logs.t_connect = -1;
4842 s->logs.t_data = -1;
4843 s->logs.t_close = 0;
4844 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4845 s->logs.srv_queue_size = 0; /* we will get this number soon */
4846
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4847 s->logs.bytes_in = s->req->total = s->req->buf->i;
4848 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4849
4850 if (s->pend_pos)
4851 pendconn_free(s->pend_pos);
4852
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4853 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4854 if (s->flags & SN_CURR_SESS) {
4855 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4856 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4857 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4858 if (may_dequeue_tasks(objt_server(s->target), s->be))
4859 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4860 }
4861
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4862 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4863
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4864 /* only release our endpoint if we don't intend to reuse the
4865 * connection.
4866 */
4867 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4868 !si_conn_ready(s->req->cons)) {
4869 si_release_endpoint(s->req->cons);
4870 }
4871
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4872 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4873 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4874 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4875 s->req->cons->exp = TICK_ETERNITY;
Willy Tarreauc9200962013-12-31 23:03:09 +0100[diff] [blame]4876 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]4877 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);
4878 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]4879 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]4880 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE|SN_SRV_REUSED);
Cyril Bonté17f77072014-10-22 22:30:13 +0200[diff] [blame]4881 s->flags &= ~(SN_ERR_MASK|SN_FINST_MASK|SN_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4882
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4883 s->txn.meth = 0;
4884 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4885 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4886
4887 if (prev_status == 401 || prev_status == 407) {
4888 /* In HTTP keep-alive mode, if we receive a 401, we still have
4889 * a chance of being able to send the visitor again to the same
4890 * server over the same connection. This is required by some
4891 * broken protocols such as NTLM, and anyway whenever there is
4892 * an opportunity for sending the challenge to the proper place,
4893 * it's better to do it (at least it helps with debugging).
4894 */
4895 s->txn.flags |= TX_PREFER_LAST;
4896 }
4897
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4898 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4899 s->req->cons->flags |= SI_FL_INDEP_STR;
4900
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4901 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4902 s->req->flags |= CF_NEVER_WAIT;
4903 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4904 }
4905
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4906 /* if the request buffer is not empty, it means we're
4907 * about to process another request, so send pending
4908 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4909 * Just don't do this if the buffer is close to be full,
4910 * because the request will wait for it to flush a little
4911 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4912 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4913 if (s->req->buf->i) {
4914 if (s->rep->buf->o &&
4915 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4916 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]4917 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4918 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4919
4920 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4921 channel_auto_read(s->req);
4922 channel_auto_close(s->req);
4923 channel_auto_read(s->rep);
4924 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4925
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]4926 /* we're in keep-alive with an idle connection, monitor it */
4927 si_idle_conn(s->req->cons);
4928
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4929 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4930 s->rep->analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4931}
4932
4933
4934/* This function updates the request state machine according to the response
4935 * state machine and buffer flags. It returns 1 if it changes anything (flag
4936 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4937 * it is only used to find when a request/response couple is complete. Both
4938 * this function and its equivalent should loop until both return zero. It
4939 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4940 */
4941int http_sync_req_state(struct session *s)
4942{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4943 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4944 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4945 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4946 unsigned int old_state = txn->req.msg_state;
4947
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4948 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4949 return 0;
4950
4951 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4952 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4953 * We can shut the read side unless we want to abort_on_close,
4954 * or we have a POST request. The issue with POST requests is
4955 * that some browsers still send a CRLF after the request, and
4956 * this CRLF must be read so that it does not remain in the kernel
4957 * buffers, otherwise a close could cause an RST on some systems
4958 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4959 * Note that if we're using keep-alive on the client side, we'd
4960 * rather poll now and keep the polling enabled for the whole
4961 * session's life than enabling/disabling it between each
4962 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4963 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4964 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
4965 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
4966 !(s->be->options & PR_O_ABRT_CLOSE) &&
4967 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4968 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4969
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4970 /* if the server closes the connection, we want to immediately react
4971 * and close the socket to save packets and syscalls.
4972 */
4973 chn->cons->flags |= SI_FL_NOHALF;
4974
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4975 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4976 goto wait_other_side;
4977
4978 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4979 /* The server has not finished to respond, so we
4980 * don't want to move in order not to upset it.
4981 */
4982 goto wait_other_side;
4983 }
4984
4985 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4986 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4987 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4988 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4989 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4990 goto wait_other_side;
4991 }
4992
4993 /* When we get here, it means that both the request and the
4994 * response have finished receiving. Depending on the connection
4995 * mode, we'll have to wait for the last bytes to leave in either
4996 * direction, and sometimes for a close to be effective.
4997 */
4998
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4999 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5000 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5001 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5002 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5003 }
5004 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5005 /* Option forceclose is set, or either side wants to close,
5006 * let's enforce it now that we're not expecting any new
5007 * data to come. The caller knows the session is complete
5008 * once both states are CLOSED.
5009 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5010 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5011 channel_shutr_now(chn);
5012 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5013 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5014 }
5015 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5016 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5017 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5018 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5019 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5020 channel_auto_read(chn);
5021 txn->req.msg_state = HTTP_MSG_TUNNEL;
5022 chn->flags |= CF_NEVER_WAIT;
5023 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5024 }
5025
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5026 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5027 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5028 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5029
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5030 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5031 txn->req.msg_state = HTTP_MSG_CLOSING;
5032 goto http_msg_closing;
5033 }
5034 else {
5035 txn->req.msg_state = HTTP_MSG_CLOSED;
5036 goto http_msg_closed;
5037 }
5038 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5039 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5040 }
5041
5042 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5043 http_msg_closing:
5044 /* nothing else to forward, just waiting for the output buffer
5045 * to be empty and for the shutw_now to take effect.
5046 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5047 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5048 txn->req.msg_state = HTTP_MSG_CLOSED;
5049 goto http_msg_closed;
5050 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5051 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5052 txn->req.msg_state = HTTP_MSG_ERROR;
5053 goto wait_other_side;
5054 }
5055 }
5056
5057 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5058 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5059 /* see above in MSG_DONE why we only do this in these states */
5060 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5061 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5062 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5063 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5064 goto wait_other_side;
5065 }
5066
5067 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5068 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5069}
5070
5071
5072/* This function updates the response state machine according to the request
5073 * state machine and buffer flags. It returns 1 if it changes anything (flag
5074 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5075 * it is only used to find when a request/response couple is complete. Both
5076 * this function and its equivalent should loop until both return zero. It
5077 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5078 */
5079int http_sync_res_state(struct session *s)
5080{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5081 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5082 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5083 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5084 unsigned int old_state = txn->rsp.msg_state;
5085
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5086 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5087 return 0;
5088
5089 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5090 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5091 * still monitor the server connection for a possible close
5092 * while the request is being uploaded, so we don't disable
5093 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5094 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5095 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5096
5097 if (txn->req.msg_state == HTTP_MSG_ERROR)
5098 goto wait_other_side;
5099
5100 if (txn->req.msg_state < HTTP_MSG_DONE) {
5101 /* The client seems to still be sending data, probably
5102 * because we got an error response during an upload.
5103 * We have the choice of either breaking the connection
5104 * or letting it pass through. Let's do the later.
5105 */
5106 goto wait_other_side;
5107 }
5108
5109 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5110 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5111 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5112 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5113 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5114 goto wait_other_side;
5115 }
5116
5117 /* When we get here, it means that both the request and the
5118 * response have finished receiving. Depending on the connection
5119 * mode, we'll have to wait for the last bytes to leave in either
5120 * direction, and sometimes for a close to be effective.
5121 */
5122
5123 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5124 /* Server-close mode : shut read and wait for the request
5125 * side to close its output buffer. The caller will detect
5126 * when we're in DONE and the other is in CLOSED and will
5127 * catch that for the final cleanup.
5128 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5129 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5130 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5131 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5132 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5133 /* Option forceclose is set, or either side wants to close,
5134 * let's enforce it now that we're not expecting any new
5135 * data to come. The caller knows the session is complete
5136 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5137 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5138 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5139 channel_shutr_now(chn);
5140 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5141 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5142 }
5143 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5144 /* The last possible modes are keep-alive and tunnel. Tunnel will
5145 * need to forward remaining data. Keep-alive will need to monitor
5146 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5147 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5148 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5149 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5150 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5151 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5152 }
5153
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5154 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5155 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5156 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5157 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5158 goto http_msg_closing;
5159 }
5160 else {
5161 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5162 goto http_msg_closed;
5163 }
5164 }
5165 goto wait_other_side;
5166 }
5167
5168 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5169 http_msg_closing:
5170 /* nothing else to forward, just waiting for the output buffer
5171 * to be empty and for the shutw_now to take effect.
5172 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5173 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5174 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5175 goto http_msg_closed;
5176 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5177 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5178 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5179 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5180 if (objt_server(s->target))
5181 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5182 goto wait_other_side;
5183 }
5184 }
5185
5186 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5187 http_msg_closed:
5188 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5189 bi_erase(chn);
5190 channel_auto_close(chn);
5191 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5192 goto wait_other_side;
5193 }
5194
5195 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5196 /* We force the response to leave immediately if we're waiting for the
5197 * other side, since there is no pending shutdown to push it out.
5198 */
5199 if (!channel_is_empty(chn))
5200 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5201 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5202}
5203
5204
5205/* Resync the request and response state machines. Return 1 if either state
5206 * changes.
5207 */
5208int http_resync_states(struct session *s)
5209{
5210 struct http_txn *txn = &s->txn;
5211 int old_req_state = txn->req.msg_state;
5212 int old_res_state = txn->rsp.msg_state;
5213
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5214 http_sync_req_state(s);
5215 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5216 if (!http_sync_res_state(s))
5217 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5218 if (!http_sync_req_state(s))
5219 break;
5220 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5221
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5222 /* OK, both state machines agree on a compatible state.
5223 * There are a few cases we're interested in :
5224 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5225 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5226 * directions, so let's simply disable both analysers.
5227 * - HTTP_MSG_CLOSED on the response only means we must abort the
5228 * request.
5229 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5230 * with server-close mode means we've completed one request and we
5231 * must re-initialize the server connection.
5232 */
5233
5234 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5235 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5236 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5237 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
5238 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5239 channel_auto_close(s->req);
5240 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5241 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5242 channel_auto_close(s->rep);
5243 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5244 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5245 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
5246 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5247 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5248 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5249 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5250 channel_auto_close(s->rep);
5251 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5252 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5253 channel_abort(s->req);
5254 channel_auto_close(s->req);
5255 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5256 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5257 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5258 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5259 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5260 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5261 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5262 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5263 /* server-close/keep-alive: terminate this transaction,
5264 * possibly killing the server connection and reinitialize
5265 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5266 */
5267 http_end_txn_clean_session(s);
5268 }
5269
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5270 return txn->req.msg_state != old_req_state ||
5271 txn->rsp.msg_state != old_res_state;
5272}
5273
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5274/* This function is an analyser which forwards request body (including chunk
5275 * sizes if any). It is called as soon as we must forward, even if we forward
5276 * zero byte. The only situation where it must not be called is when we're in
5277 * tunnel mode and we want to forward till the close. It's used both to forward
5278 * remaining data and to resync after end of body. It expects the msg_state to
5279 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5280 * 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]5281 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5282 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5283 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5284int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5285{
5286 struct http_txn *txn = &s->txn;
5287 struct http_msg *msg = &s->txn.req;
5288
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5289 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5290 return 0;
5291
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5292 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]5293 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5294 /* Output closed while we were sending data. We must abort and
5295 * wake the other side up.
5296 */
5297 msg->msg_state = HTTP_MSG_ERROR;
5298 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5299 return 1;
5300 }
5301
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5302 /* Note that we don't have to send 100-continue back because we don't
5303 * need the data to complete our job, and it's up to the server to
5304 * decide whether to return 100, 417 or anything else in return of
5305 * an "Expect: 100-continue" header.
5306 */
5307
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5308 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5309 /* we have msg->sov which points to the first byte of message
5310 * body, and req->buf.p still points to the beginning of the
5311 * message. We forward the headers now, as we don't need them
5312 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5313 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5314 b_adv(req->buf, msg->sov);
5315 msg->next -= msg->sov;
5316 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5317
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5318 /* The previous analysers guarantee that the state is somewhere
5319 * between MSG_BODY and the first MSG_DATA. So msg->sol and
5320 * msg->next are always correct.
5321 */
5322 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
5323 if (msg->flags & HTTP_MSGF_TE_CHNK)
5324 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5325 else
5326 msg->msg_state = HTTP_MSG_DATA;
5327 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5328 }
5329
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5330 /* Some post-connect processing might want us to refrain from starting to
5331 * forward data. Currently, the only reason for this is "balance url_param"
5332 * whichs need to parse/process the request after we've enabled forwarding.
5333 */
5334 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
5335 if (!(s->rep->flags & CF_READ_ATTACHED)) {
5336 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5337 req->flags |= CF_WAKE_CONNECT;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5338 goto missing_data;
5339 }
5340 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5341 }
5342
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5343 /* in most states, we should abort in case of early close */
5344 channel_auto_close(req);
5345
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5346 if (req->to_forward) {
5347 /* We can't process the buffer's contents yet */
5348 req->flags |= CF_WAKE_WRITE;
5349 goto missing_data;
5350 }
5351
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5352 while (1) {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5353 if (msg->msg_state == HTTP_MSG_DATA) {
5354 /* must still forward */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5355 /* we may have some pending data starting at req->buf->p */
5356 if (msg->chunk_len > req->buf->i - msg->next) {
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5357 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5358 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5359 }
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5360 msg->next += msg->chunk_len;
5361 msg->chunk_len = 0;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5362
5363 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5364 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5365 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5366 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5367 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5368 }
5369 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5370 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5371 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5372 * TRAILERS state.
5373 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5374 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5375
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5376 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5377 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5378 else if (ret < 0) {
5379 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5380 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5381 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]5382 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5383 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5384 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5385 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5386 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5387 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5388 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5389
5390 if (ret == 0)
5391 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5392 else if (ret < 0) {
5393 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5394 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5395 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]5396 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5397 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5398 /* we're in MSG_CHUNK_SIZE now */
5399 }
5400 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5401 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5402
5403 if (ret == 0)
5404 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5405 else if (ret < 0) {
5406 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5407 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5408 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]5409 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5410 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5411 /* we're in HTTP_MSG_DONE now */
5412 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5413 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5414 int old_state = msg->msg_state;
5415
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5416 /* other states, DONE...TUNNEL */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5417
5418 /* we may have some pending data starting at req->buf->p
5419 * such as last chunk of data or trailers.
5420 */
5421 b_adv(req->buf, msg->next);
Willy Tarreaub4d05092014-09-01 20:35:55 +0200[diff] [blame]5422 if (unlikely(!(s->req->flags & CF_WROTE_DATA)))
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5423 msg->sov -= msg->next;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5424 msg->next = 0;
5425
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5426 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5427 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5428 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5429 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5430 if (http_resync_states(s)) {
5431 /* some state changes occurred, maybe the analyser
5432 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5433 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5434 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5435 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5436 /* request errors are most likely due to
5437 * the server aborting the transfer.
5438 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5439 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5440 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5441 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5442 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5443 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5444 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5445 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5446 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5447
5448 /* If "option abortonclose" is set on the backend, we
5449 * want to monitor the client's connection and forward
5450 * any shutdown notification to the server, which will
5451 * decide whether to close or to go on processing the
5452 * request.
5453 */
5454 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5455 channel_auto_read(req);
5456 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5457 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5458 else if (s->txn.meth == HTTP_METH_POST) {
5459 /* POST requests may require to read extra CRLF
5460 * sent by broken browsers and which could cause
5461 * an RST to be sent upon close on some systems
5462 * (eg: Linux).
5463 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5464 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5465 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5466
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5467 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5468 }
5469 }
5470
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5471 missing_data:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5472 /* we may have some pending data starting at req->buf->p */
5473 b_adv(req->buf, msg->next);
Willy Tarreaub4d05092014-09-01 20:35:55 +0200[diff] [blame]5474 if (unlikely(!(s->req->flags & CF_WROTE_DATA)))
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]5475 msg->sov -= msg->next + MIN(msg->chunk_len, req->buf->i);
5476
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5477 msg->next = 0;
5478 msg->chunk_len -= channel_forward(req, msg->chunk_len);
5479
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5480 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5481 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5482 if (!(s->flags & SN_ERR_MASK))
5483 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5484 if (!(s->flags & SN_FINST_MASK)) {
5485 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5486 s->flags |= SN_FINST_H;
5487 else
5488 s->flags |= SN_FINST_D;
5489 }
5490
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5491 s->fe->fe_counters.cli_aborts++;
5492 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5493 if (objt_server(s->target))
5494 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5495
5496 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5497 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5498
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5499 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5500 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5501 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5502
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5503 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5504 * 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]5505 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5506 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5507 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5508
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5509 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5510 * 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]5511 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5512 * modes are already handled by the stream sock layer. We must not do
5513 * this in content-length mode because it could present the MSG_MORE
5514 * flag with the last block of forwarded data, which would cause an
5515 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5516 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5517 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5518 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5519
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5520 return 0;
5521
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5522 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5523 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5524 if (s->listener->counters)
5525 s->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5526
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5527 return_bad_req_stats_ok:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5528 /* we may have some pending data starting at req->buf->p */
5529 b_adv(req->buf, msg->next);
5530 msg->next = 0;
5531
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5532 txn->req.msg_state = HTTP_MSG_ERROR;
5533 if (txn->status) {
5534 /* Note: we don't send any error if some data were already sent */
5535 stream_int_retnclose(req->prod, NULL);
5536 } else {
5537 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5538 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5539 }
5540 req->analysers = 0;
5541 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]5542
5543 if (!(s->flags & SN_ERR_MASK))
5544 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5545 if (!(s->flags & SN_FINST_MASK)) {
5546 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5547 s->flags |= SN_FINST_H;
5548 else
5549 s->flags |= SN_FINST_D;
5550 }
5551 return 0;
5552
5553 aborted_xfer:
5554 txn->req.msg_state = HTTP_MSG_ERROR;
5555 if (txn->status) {
5556 /* Note: we don't send any error if some data were already sent */
5557 stream_int_retnclose(req->prod, NULL);
5558 } else {
5559 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5560 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5561 }
5562 req->analysers = 0;
5563 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5564
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5565 s->fe->fe_counters.srv_aborts++;
5566 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5567 if (objt_server(s->target))
5568 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5569
5570 if (!(s->flags & SN_ERR_MASK))
5571 s->flags |= SN_ERR_SRVCL;
5572 if (!(s->flags & SN_FINST_MASK)) {
5573 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5574 s->flags |= SN_FINST_H;
5575 else
5576 s->flags |= SN_FINST_D;
5577 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5578 return 0;
5579}
5580
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5581/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5582 * processing can continue on next analysers, or zero if it either needs more
5583 * data or wants to immediately abort the response (eg: timeout, error, ...). It
5584 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
5585 * when it has nothing left to do, and may remove any analyser when it wants to
5586 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5587 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5588int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5589{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5590 struct http_txn *txn = &s->txn;
5591 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5592 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5593 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5594 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5595 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5596
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5597 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]5598 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5599 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5600 rep,
5601 rep->rex, rep->wex,
5602 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5603 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5604 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5605
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5606 /*
5607 * Now parse the partial (or complete) lines.
5608 * We will check the response syntax, and also join multi-line
5609 * headers. An index of all the lines will be elaborated while
5610 * parsing.
5611 *
5612 * For the parsing, we use a 28 states FSM.
5613 *
5614 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5615 * rep->buf->p = beginning of response
5616 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5617 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5618 * msg->eol = end of current header or line (LF or CRLF)
5619 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5620 */
5621
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5622 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5623 /* There's a protected area at the end of the buffer for rewriting
5624 * purposes. We don't want to start to parse the request if the
5625 * protected area is affected, because we may have to move processed
5626 * data later, which is much more complicated.
5627 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5628 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5629 if (unlikely(!channel_reserved(rep))) {
5630 /* some data has still not left the buffer, wake us once that's done */
5631 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5632 goto abort_response;
5633 channel_dont_close(rep);
5634 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5635 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5636 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5637 }
5638
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5639 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5640 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5641 buffer_slow_realign(rep->buf);
5642
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5643 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5644 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5645 }
5646
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5647 /* 1: we might have to print this header in debug mode */
5648 if (unlikely((global.mode & MODE_DEBUG) &&
5649 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau8767b132014-10-21 19:36:09 +0200[diff] [blame]5650 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5651 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5652
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5653 sol = rep->buf->p;
5654 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5655 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5656
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5657 sol += hdr_idx_first_pos(&txn->hdr_idx);
5658 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5659
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5660 while (cur_idx) {
5661 eol = sol + txn->hdr_idx.v[cur_idx].len;
5662 debug_hdr("srvhdr", s, sol, eol);
5663 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5664 cur_idx = txn->hdr_idx.v[cur_idx].next;
5665 }
5666 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5667
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5668 /*
5669 * Now we quickly check if we have found a full valid response.
5670 * If not so, we check the FD and buffer states before leaving.
5671 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5672 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5673 * responses are checked first.
5674 *
5675 * Depending on whether the client is still there or not, we
5676 * may send an error response back or not. Note that normally
5677 * we should only check for HTTP status there, and check I/O
5678 * errors somewhere else.
5679 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5680
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5681 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5682 /* Invalid response */
5683 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5684 /* we detected a parsing error. We want to archive this response
5685 * in the dedicated proxy area for later troubleshooting.
5686 */
5687 hdr_response_bad:
5688 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5689 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]5690
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5691 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5692 if (objt_server(s->target)) {
5693 objt_server(s->target)->counters.failed_resp++;
5694 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5695 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5696 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5697 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5698 rep->analysers = 0;
5699 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5700 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5701 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5702 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5703
5704 if (!(s->flags & SN_ERR_MASK))
5705 s->flags |= SN_ERR_PRXCOND;
5706 if (!(s->flags & SN_FINST_MASK))
5707 s->flags |= SN_FINST_H;
5708
5709 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5710 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5711
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5712 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5713 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5714 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5715 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5716 goto hdr_response_bad;
5717 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5718
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5719 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5720 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5721 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5722 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]5723 else if (txn->flags & TX_NOT_FIRST)
5724 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5725
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5726 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5727 if (objt_server(s->target)) {
5728 objt_server(s->target)->counters.failed_resp++;
5729 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5730 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5731
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5732 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5733 rep->analysers = 0;
5734 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5735 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5736 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5737 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5738
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5739 if (!(s->flags & SN_ERR_MASK))
5740 s->flags |= SN_ERR_SRVCL;
5741 if (!(s->flags & SN_FINST_MASK))
5742 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5743 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5744 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5745
Willy Tarreau2a4f5112014-06-23 15:22:31 +0200[diff] [blame]5746 /* read timeout : return a 504 to the client. */
5747 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5748 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5749 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]5750 else if (txn->flags & TX_NOT_FIRST)
5751 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5752
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5753 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5754 if (objt_server(s->target)) {
5755 objt_server(s->target)->counters.failed_resp++;
5756 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5757 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5758
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5759 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5760 rep->analysers = 0;
5761 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5762 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5763 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5764 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5765
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5766 if (!(s->flags & SN_ERR_MASK))
5767 s->flags |= SN_ERR_SRVTO;
5768 if (!(s->flags & SN_FINST_MASK))
5769 s->flags |= SN_FINST_H;
5770 return 0;
5771 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5772
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5773 /* client abort with an abortonclose */
5774 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5775 s->fe->fe_counters.cli_aborts++;
5776 s->be->be_counters.cli_aborts++;
5777 if (objt_server(s->target))
5778 objt_server(s->target)->counters.cli_aborts++;
5779
5780 rep->analysers = 0;
5781 channel_auto_close(rep);
5782
5783 txn->status = 400;
5784 bi_erase(rep);
5785 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5786
5787 if (!(s->flags & SN_ERR_MASK))
5788 s->flags |= SN_ERR_CLICL;
5789 if (!(s->flags & SN_FINST_MASK))
5790 s->flags |= SN_FINST_H;
5791
5792 /* process_session() will take care of the error */
5793 return 0;
5794 }
5795
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5796 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5797 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5798 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5799 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]5800 else if (txn->flags & TX_NOT_FIRST)
5801 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5802
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5803 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5804 if (objt_server(s->target)) {
5805 objt_server(s->target)->counters.failed_resp++;
5806 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5807 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5808
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5809 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5810 rep->analysers = 0;
5811 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5812 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5813 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5814 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5815
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5816 if (!(s->flags & SN_ERR_MASK))
5817 s->flags |= SN_ERR_SRVCL;
5818 if (!(s->flags & SN_FINST_MASK))
5819 s->flags |= SN_FINST_H;
5820 return 0;
5821 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5822
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5823 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5824 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5825 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5826 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]5827 else if (txn->flags & TX_NOT_FIRST)
5828 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5829
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5830 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5831 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5832 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5833
5834 if (!(s->flags & SN_ERR_MASK))
5835 s->flags |= SN_ERR_CLICL;
5836 if (!(s->flags & SN_FINST_MASK))
5837 s->flags |= SN_FINST_H;
5838
5839 /* process_session() will take care of the error */
5840 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5841 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5842
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5843 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5844 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5845 return 0;
5846 }
5847
5848 /* More interesting part now : we know that we have a complete
5849 * response which at least looks like HTTP. We have an indicator
5850 * of each header's length, so we can parse them quickly.
5851 */
5852
5853 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5854 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5855
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5856 /*
5857 * 1: get the status code
5858 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5859 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5860 if (n < 1 || n > 5)
5861 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5862 /* when the client triggers a 4xx from the server, it's most often due
5863 * to a missing object or permission. These events should be tracked
5864 * because if they happen often, it may indicate a brute force or a
5865 * vulnerability scan.
5866 */
5867 if (n == 4)
5868 session_inc_http_err_ctr(s);
5869
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5870 if (objt_server(s->target))
5871 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5872
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5873 /* check if the response is HTTP/1.1 or above */
5874 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5875 ((rep->buf->p[5] > '1') ||
5876 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5877 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5878
5879 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5880 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]5881
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5882 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5883 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5884
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5885 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]5886
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5887 /* Adjust server's health based on status code. Note: status codes 501
5888 * and 505 are triggered on demand by client request, so we must not
5889 * count them as server failures.
5890 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5891 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5892 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5893 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5894 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5895 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5896 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5897
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5898 /*
5899 * 2: check for cacheability.
5900 */
5901
5902 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5903 case 100:
5904 /*
5905 * We may be facing a 100-continue response, in which case this
5906 * is not the right response, and we're waiting for the next one.
5907 * Let's allow this response to go to the client and wait for the
5908 * next one.
5909 */
5910 hdr_idx_init(&txn->hdr_idx);
5911 msg->next -= channel_forward(rep, msg->next);
5912 msg->msg_state = HTTP_MSG_RPBEFORE;
5913 txn->status = 0;
5914 s->logs.t_data = -1; /* was not a response yet */
5915 goto next_one;
5916
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5917 case 200:
5918 case 203:
5919 case 206:
5920 case 300:
5921 case 301:
5922 case 410:
5923 /* RFC2616 @13.4:
5924 * "A response received with a status code of
5925 * 200, 203, 206, 300, 301 or 410 MAY be stored
5926 * by a cache (...) unless a cache-control
5927 * directive prohibits caching."
5928 *
5929 * RFC2616 @9.5: POST method :
5930 * "Responses to this method are not cacheable,
5931 * unless the response includes appropriate
5932 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5933 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5934 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5935 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5936 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5937 break;
5938 default:
5939 break;
5940 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5941
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5942 /*
5943 * 3: we may need to capture headers
5944 */
5945 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5946 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5947 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5948 txn->rsp.cap, s->fe->rsp_cap);
5949
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]5950 /* 4: determine the transfer-length according to RFC2616 #4.4, updated
5951 * by RFC7230#3.3.3 :
5952 *
5953 * The length of a message body is determined by one of the following
5954 * (in order of precedence):
5955 *
5956 * 1. Any response to a HEAD request and any response with a 1xx
5957 * (Informational), 204 (No Content), or 304 (Not Modified) status
5958 * code is always terminated by the first empty line after the
5959 * header fields, regardless of the header fields present in the
5960 * message, and thus cannot contain a message body.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5961 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]5962 * 2. Any 2xx (Successful) response to a CONNECT request implies that
5963 * the connection will become a tunnel immediately after the empty
5964 * line that concludes the header fields. A client MUST ignore any
5965 * Content-Length or Transfer-Encoding header fields received in
5966 * such a message.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5967 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]5968 * 3. If a Transfer-Encoding header field is present and the chunked
5969 * transfer coding (Section 4.1) is the final encoding, the message
5970 * body length is determined by reading and decoding the chunked
5971 * data until the transfer coding indicates the data is complete.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5972 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]5973 * If a Transfer-Encoding header field is present in a response and
5974 * the chunked transfer coding is not the final encoding, the
5975 * message body length is determined by reading the connection until
5976 * it is closed by the server. If a Transfer-Encoding header field
5977 * is present in a request and the chunked transfer coding is not
5978 * the final encoding, the message body length cannot be determined
5979 * reliably; the server MUST respond with the 400 (Bad Request)
5980 * status code and then close the connection.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5981 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]5982 * If a message is received with both a Transfer-Encoding and a
5983 * Content-Length header field, the Transfer-Encoding overrides the
5984 * Content-Length. Such a message might indicate an attempt to
5985 * perform request smuggling (Section 9.5) or response splitting
5986 * (Section 9.4) and ought to be handled as an error. A sender MUST
5987 * remove the received Content-Length field prior to forwarding such
5988 * a message downstream.
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5989 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]5990 * 4. If a message is received without Transfer-Encoding and with
5991 * either multiple Content-Length header fields having differing
5992 * field-values or a single Content-Length header field having an
5993 * invalid value, then the message framing is invalid and the
5994 * recipient MUST treat it as an unrecoverable error. If this is a
5995 * request message, the server MUST respond with a 400 (Bad Request)
5996 * status code and then close the connection. If this is a response
5997 * message received by a proxy, the proxy MUST close the connection
5998 * to the server, discard the received response, and send a 502 (Bad
5999 * Gateway) response to the client. If this is a response message
6000 * received by a user agent, the user agent MUST close the
6001 * connection to the server and discard the received response.
6002 *
6003 * 5. If a valid Content-Length header field is present without
6004 * Transfer-Encoding, its decimal value defines the expected message
6005 * body length in octets. If the sender closes the connection or
6006 * the recipient times out before the indicated number of octets are
6007 * received, the recipient MUST consider the message to be
6008 * incomplete and close the connection.
6009 *
6010 * 6. If this is a request message and none of the above are true, then
6011 * the message body length is zero (no message body is present).
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6012 *
Willy Tarreau4db603d2015-05-01 10:05:17 +0200[diff] [blame]6013 * 7. Otherwise, this is a response message without a declared message
6014 * body length, so the message body length is determined by the
6015 * number of octets received prior to the server closing the
6016 * connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6017 */
6018
6019 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6020 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6021 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6022 * FIXME: should we parse anyway and return an error on chunked encoding ?
6023 */
6024 if (txn->meth == HTTP_METH_HEAD ||
6025 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6026 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6027 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]6028 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6029 goto skip_content_length;
6030 }
6031
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6032 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6033 ctx.idx = 0;
Willy Tarreaue77bc172015-05-01 10:06:30 +0200[diff] [blame]6034 while (http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6035 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6036 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6037 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6038 /* bad transfer-encoding (chunked followed by something else) */
6039 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6040 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6041 break;
6042 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6043 }
6044
Willy Tarreaudfa3d922015-04-30 10:57:51 +0200[diff] [blame]6045 /* Chunked responses must have their content-length removed */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6046 ctx.idx = 0;
Willy Tarreau660418d2015-05-01 10:25:45 +0200[diff] [blame^]6047 if (use_close_only || (msg->flags & HTTP_MSGF_TE_CHNK)) {
Willy Tarreaudfa3d922015-04-30 10:57:51 +0200[diff] [blame]6048 while (http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx))
6049 http_remove_header2(msg, &txn->hdr_idx, &ctx);
6050 }
Willy Tarreau660418d2015-05-01 10:25:45 +0200[diff] [blame^]6051 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]6052 signed long long cl;
6053
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6054 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6055 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6056 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6057 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6058
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6059 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6060 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6061 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6062 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6063
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6064 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6065 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6066 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6067 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6068
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6069 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6070 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6071 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6072 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6073
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6074 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6075 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6076 }
6077
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6078 if (s->fe->comp || s->be->comp)
6079 select_compression_response_header(s, rep->buf);
6080
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6081skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6082 /* Now we have to check if we need to modify the Connection header.
6083 * This is more difficult on the response than it is on the request,
6084 * because we can have two different HTTP versions and we don't know
6085 * how the client will interprete a response. For instance, let's say
6086 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6087 * HTTP/1.1 response without any header. Maybe it will bound itself to
6088 * HTTP/1.0 because it only knows about it, and will consider the lack
6089 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6090 * the lack of header as a keep-alive. Thus we will use two flags
6091 * indicating how a request MAY be understood by the client. In case
6092 * of multiple possibilities, we'll fix the header to be explicit. If
6093 * ambiguous cases such as both close and keepalive are seen, then we
6094 * will fall back to explicit close. Note that we won't take risks with
6095 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6096 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6097 */
6098
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6099 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6100 txn->status == 101)) {
6101 /* Either we've established an explicit tunnel, or we're
6102 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6103 * to understand the next protocols. We have to switch to tunnel
6104 * mode, so that we transfer the request and responses then let
6105 * this protocol pass unmodified. When we later implement specific
6106 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6107 * header which contains information about that protocol for
6108 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6109 */
6110 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6111 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6112 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6113 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6114 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6115 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6116 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6117
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6118 /* this situation happens when combining pretend-keepalive with httpclose. */
6119 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6120 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6121 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6122 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6123
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6124 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6125 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6126 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6127 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6128
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6129 /* now adjust header transformations depending on current state */
6130 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6131 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6132 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6133 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6134 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6135 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6136 else { /* SCL / KAL */
6137 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6138 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6139 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6140 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6141
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6142 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6143 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6144
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6145 /* Some keep-alive responses are converted to Server-close if
6146 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6147 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6148 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6149 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6150 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6151 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6152 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6153 }
6154
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6155 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6156 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6157
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6158 /* end of job, return OK */
6159 rep->analysers &= ~an_bit;
6160 rep->analyse_exp = TICK_ETERNITY;
6161 channel_auto_close(rep);
6162 return 1;
6163
6164 abort_keep_alive:
6165 /* A keep-alive request to the server failed on a network error.
6166 * The client is required to retry. We need to close without returning
6167 * any other information so that the client retries.
6168 */
6169 txn->status = 0;
6170 rep->analysers = 0;
6171 s->req->analysers = 0;
6172 channel_auto_close(rep);
6173 s->logs.logwait = 0;
6174 s->logs.level = 0;
6175 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
6176 bi_erase(rep);
6177 stream_int_retnclose(rep->cons, NULL);
6178 return 0;
6179}
6180
6181/* This function performs all the processing enabled for the current response.
6182 * It normally returns 1 unless it wants to break. It relies on buffers flags,
6183 * and updates s->rep->analysers. It might make sense to explode it into several
6184 * other functions. It works like process_request (see indications above).
6185 */
6186int http_process_res_common(struct session *s, struct channel *rep, int an_bit, struct proxy *px)
6187{
6188 struct http_txn *txn = &s->txn;
6189 struct http_msg *msg = &txn->rsp;
6190 struct proxy *cur_proxy;
6191 struct cond_wordlist *wl;
6192 struct http_res_rule *http_res_last_rule = NULL;
6193
6194 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
6195 now_ms, __FUNCTION__,
6196 s,
6197 rep,
6198 rep->rex, rep->wex,
6199 rep->flags,
6200 rep->buf->i,
6201 rep->analysers);
6202
6203 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6204 return 0;
6205
6206 rep->analysers &= ~an_bit;
6207 rep->analyse_exp = TICK_ETERNITY;
6208
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6209 /* The stats applet needs to adjust the Connection header but we don't
6210 * apply any filter there.
6211 */
6212 if (unlikely(objt_applet(s->target) == &http_stats_applet))
6213 goto skip_filters;
6214
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6215 /*
6216 * We will have to evaluate the filters.
6217 * As opposed to version 1.2, now they will be evaluated in the
6218 * filters order and not in the header order. This means that
6219 * each filter has to be validated among all headers.
6220 *
6221 * Filters are tried with ->be first, then with ->fe if it is
6222 * different from ->be.
6223 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6224
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6225 cur_proxy = s->be;
6226 while (1) {
6227 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6228
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6229 /* evaluate http-response rules */
6230 if (!http_res_last_rule)
6231 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]6232
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6233 /* try headers filters */
6234 if (rule_set->rsp_exp != NULL) {
6235 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6236 return_bad_resp:
6237 if (objt_server(s->target)) {
6238 objt_server(s->target)->counters.failed_resp++;
6239 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6240 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6241 s->be->be_counters.failed_resp++;
6242 return_srv_prx_502:
6243 rep->analysers = 0;
6244 txn->status = 502;
6245 s->logs.t_data = -1; /* was not a valid response */
6246 rep->prod->flags |= SI_FL_NOLINGER;
6247 bi_erase(rep);
6248 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
6249 if (!(s->flags & SN_ERR_MASK))
6250 s->flags |= SN_ERR_PRXCOND;
6251 if (!(s->flags & SN_FINST_MASK))
6252 s->flags |= SN_FINST_H;
6253 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6254 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6255 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6256
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6257 /* has the response been denied ? */
6258 if (txn->flags & TX_SVDENY) {
6259 if (objt_server(s->target))
6260 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6261
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6262 s->be->be_counters.denied_resp++;
6263 s->fe->fe_counters.denied_resp++;
6264 if (s->listener->counters)
6265 s->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6266
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6267 goto return_srv_prx_502;
6268 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6269
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6270 /* add response headers from the rule sets in the same order */
6271 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6272 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6273 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6274 if (wl->cond) {
6275 int ret = acl_exec_cond(wl->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
6276 ret = acl_pass(ret);
6277 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6278 ret = !ret;
6279 if (!ret)
6280 continue;
6281 }
6282 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6283 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6284 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6285
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6286 /* check whether we're already working on the frontend */
6287 if (cur_proxy == s->fe)
6288 break;
6289 cur_proxy = s->fe;
6290 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6291
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6292 /* OK that's all we can do for 1xx responses */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6293 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6294 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6295
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6296 /*
6297 * Now check for a server cookie.
6298 */
6299 if (s->be->cookie_name || s->be->appsession_name || s->fe->capture_name ||
6300 (s->be->options & PR_O_CHK_CACHE))
6301 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6302
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6303 /*
6304 * Check for cache-control or pragma headers if required.
6305 */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6306 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]6307 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6308
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6309 /*
6310 * Add server cookie in the response if needed
6311 */
6312 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6313 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
6314 (!(s->flags & SN_DIRECT) ||
6315 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6316 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6317 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6318 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6319 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
6320 !(s->flags & SN_IGNORE_PRST)) {
6321 /* the server is known, it's not the one the client requested, or the
6322 * cookie's last seen date needs to be refreshed. We have to
6323 * insert a set-cookie here, except if we want to insert only on POST
6324 * requests and this one isn't. Note that servers which don't have cookies
6325 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6326 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6327 if (!objt_server(s->target)->cookie) {
6328 chunk_printf(&trash,
6329 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6330 s->be->cookie_name);
6331 }
6332 else {
6333 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]6334
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6335 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6336 /* emit last_date, which is mandatory */
6337 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6338 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6339 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6340
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6341 if (s->be->cookie_maxlife) {
6342 /* emit first_date, which is either the original one or
6343 * the current date.
6344 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6345 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6346 s30tob64(txn->cookie_first_date ?
6347 txn->cookie_first_date >> 2 :
6348 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6349 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6350 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6351 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6352 chunk_appendf(&trash, "; path=/");
6353 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6354
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6355 if (s->be->cookie_domain)
6356 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6357
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6358 if (s->be->ck_opts & PR_CK_HTTPONLY)
6359 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6360
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6361 if (s->be->ck_opts & PR_CK_SECURE)
6362 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6363
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6364 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6365 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6366
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6367 txn->flags &= ~TX_SCK_MASK;
6368 if (objt_server(s->target)->cookie && (s->flags & SN_DIRECT))
6369 /* the server did not change, only the date was updated */
6370 txn->flags |= TX_SCK_UPDATED;
6371 else
6372 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6373
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6374 /* Here, we will tell an eventual cache on the client side that we don't
6375 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6376 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6377 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6378 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6379 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6380
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6381 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6382
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6383 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6384 "Cache-control: private", 22) < 0))
6385 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6386 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6387 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6388
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6389 /*
6390 * Check if result will be cacheable with a cookie.
6391 * We'll block the response if security checks have caught
6392 * nasty things such as a cacheable cookie.
6393 */
6394 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6395 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6396 (s->be->options & PR_O_CHK_CACHE)) {
6397 /* we're in presence of a cacheable response containing
6398 * a set-cookie header. We'll block it as requested by
6399 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6400 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6401 if (objt_server(s->target))
6402 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6403
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6404 s->be->be_counters.denied_resp++;
6405 s->fe->fe_counters.denied_resp++;
6406 if (s->listener->counters)
6407 s->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6408
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6409 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6410 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6411 send_log(s->be, LOG_ALERT,
6412 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6413 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6414 goto return_srv_prx_502;
6415 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6416
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6417 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6418 /*
6419 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6420 * If an "Upgrade" token is found, the header is left untouched in order
6421 * 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]6422 * if anything but "Upgrade" is present in the Connection header. We don't
6423 * want to touch any 101 response either since it's switching to another
6424 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6425 */
Willy Tarreau0cb4b892014-09-16 10:40:38 +0200[diff] [blame]6426 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6427 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
6428 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6429 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6430 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6431
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6432 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6433 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6434 /* we want a keep-alive response here. Keep-alive header
6435 * required if either side is not 1.1.
6436 */
6437 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6438 want_flags |= TX_CON_KAL_SET;
6439 }
6440 else {
6441 /* we want a close response here. Close header required if
6442 * the server is 1.1, regardless of the client.
6443 */
6444 if (msg->flags & HTTP_MSGF_VER_11)
6445 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6446 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6447
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6448 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6449 http_change_connection_header(txn, msg, want_flags);
6450 }
6451
6452 skip_header_mangling:
6453 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
6454 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
6455 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6456
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6457 /* if the user wants to log as soon as possible, without counting
6458 * bytes from the server, then this is the right moment. We have
6459 * to temporarily assign bytes_out to log what we currently have.
6460 */
6461 if (!LIST_ISEMPTY(&s->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
6462 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6463 s->logs.bytes_out = txn->rsp.eoh;
6464 s->do_log(s);
6465 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6466 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6467 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6468}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6469
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6470/* This function is an analyser which forwards response body (including chunk
6471 * sizes if any). It is called as soon as we must forward, even if we forward
6472 * zero byte. The only situation where it must not be called is when we're in
6473 * tunnel mode and we want to forward till the close. It's used both to forward
6474 * remaining data and to resync after end of body. It expects the msg_state to
6475 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
6476 * 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]6477 *
6478 * It is capable of compressing response data both in content-length mode and
6479 * in chunked mode. The state machines follows different flows depending on
6480 * whether content-length and chunked modes are used, since there are no
6481 * trailers in content-length :
6482 *
6483 * chk-mode cl-mode
6484 * ,----- BODY -----.
6485 * / \
6486 * V size > 0 V chk-mode
6487 * .--> SIZE -------------> DATA -------------> CRLF
6488 * | | size == 0 | last byte |
6489 * | v final crlf v inspected |
6490 * | TRAILERS -----------> DONE |
6491 * | |
6492 * `----------------------------------------------'
6493 *
6494 * Compression only happens in the DATA state, and must be flushed in final
6495 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6496 * is performed at once on final states for all bytes parsed, or when leaving
6497 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6498 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6499int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6500{
6501 struct http_txn *txn = &s->txn;
6502 struct http_msg *msg = &s->txn.rsp;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6503 static struct buffer *tmpbuf = NULL;
6504 int compressing = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6505 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6506
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6507 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6508 return 0;
6509
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6510 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]6511 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]6512 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6513 /* Output closed while we were sending data. We must abort and
6514 * wake the other side up.
6515 */
6516 msg->msg_state = HTTP_MSG_ERROR;
6517 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6518 return 1;
6519 }
6520
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6521 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6522 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6523
Willy Tarreau5bebcd02014-07-10 19:06:10 +0200[diff] [blame]6524 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6525 /* we have msg->sov which points to the first byte of message
6526 * body, and res->buf.p still points to the beginning of the
6527 * message. We forward the headers now, as we don't need them
6528 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6529 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6530 b_adv(res->buf, msg->sov);
6531 msg->next -= msg->sov;
6532 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6533
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6534 /* The previous analysers guarantee that the state is somewhere
6535 * between MSG_BODY and the first MSG_DATA. So msg->sol and
6536 * msg->next are always correct.
6537 */
6538 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
6539 if (msg->flags & HTTP_MSGF_TE_CHNK)
6540 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6541 else
6542 msg->msg_state = HTTP_MSG_DATA;
6543 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6544 }
6545
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6546 if (res->to_forward) {
6547 /* We can't process the buffer's contents yet */
6548 res->flags |= CF_WAKE_WRITE;
6549 goto missing_data;
6550 }
6551
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6552 if (unlikely(s->comp_algo != NULL) && msg->msg_state < HTTP_MSG_TRAILERS) {
6553 /* We need a compression buffer in the DATA state to put the
6554 * output of compressed data, and in CRLF state to let the
6555 * TRAILERS state finish the job of removing the trailing CRLF.
6556 */
6557 if (unlikely(tmpbuf == NULL)) {
6558 /* this is the first time we need the compression buffer */
6559 tmpbuf = pool_alloc2(pool2_buffer);
6560 if (tmpbuf == NULL)
6561 goto aborted_xfer; /* no memory */
6562 }
6563
6564 ret = http_compression_buffer_init(s, res->buf, tmpbuf);
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6565 if (ret < 0) {
6566 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6567 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6568 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6569 compressing = 1;
6570 }
6571
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6572 while (1) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6573 switch (msg->msg_state - HTTP_MSG_DATA) {
6574 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6575 /* we may have some pending data starting at res->buf->p */
6576 if (unlikely(s->comp_algo)) {
Willy Tarreau7f2f8d52014-04-18 00:20:14 +0200[diff] [blame]6577 ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6578 if (ret < 0)
6579 goto aborted_xfer;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6580
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6581 if (msg->chunk_len) {
6582 /* input empty or output full */
6583 if (res->buf->i > msg->next)
6584 res->flags |= CF_WAKE_WRITE;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6585 goto missing_data;
6586 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6587 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6588 else {
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6589 if (msg->chunk_len > res->buf->i - msg->next) {
6590 /* output full */
6591 res->flags |= CF_WAKE_WRITE;
6592 goto missing_data;
6593 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6594 msg->next += msg->chunk_len;
6595 msg->chunk_len = 0;
6596 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6597
6598 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6599 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6600 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6601 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6602 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6603 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6604 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6605 /* fall through for HTTP_MSG_CHUNK_CRLF */
6606
6607 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6608 /* we want the CRLF after the data */
6609
6610 ret = http_skip_chunk_crlf(msg);
6611 if (ret == 0)
6612 goto missing_data;
6613 else if (ret < 0) {
6614 if (msg->err_pos >= 0)
6615 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
6616 goto return_bad_res;
6617 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6618 /* we're in MSG_CHUNK_SIZE now, fall through */
6619
6620 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6621 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6622 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6623 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6624 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6625
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6626 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6627 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6628 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6629 else if (ret < 0) {
6630 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6631 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]6632 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6633 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6634 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6635 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6636
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6637 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6638 if (unlikely(compressing)) {
6639 /* we need to flush output contents before syncing FSMs */
6640 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6641 compressing = 0;
6642 }
6643
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6644 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6645 if (ret == 0)
6646 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6647 else if (ret < 0) {
6648 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6649 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]6650 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6651 }
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6652 /* we're in HTTP_MSG_DONE now, fall through */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6653
6654 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6655 /* other states, DONE...TUNNEL */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6656 if (unlikely(compressing)) {
6657 /* we need to flush output contents before syncing FSMs */
6658 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6659 compressing = 0;
6660 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6661
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6662 /* we may have some pending data starting at res->buf->p
6663 * such as a last chunk of data or trailers.
6664 */
6665 b_adv(res->buf, msg->next);
6666 msg->next = 0;
6667
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6668 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6669 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6670 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6671 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6672 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6673
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6674 if (http_resync_states(s)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6675 /* some state changes occurred, maybe the analyser
6676 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6677 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6678 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6679 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6680 /* response errors are most likely due to
6681 * the client aborting the transfer.
6682 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6683 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6684 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6685 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6686 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6687 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6688 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6689 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6690 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6691 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6692 }
6693 }
6694
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6695 missing_data:
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6696 /* we may have some pending data starting at res->buf->p */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6697 if (unlikely(compressing)) {
6698 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6699 compressing = 0;
6700 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6701
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6702 if ((s->comp_algo == NULL || msg->msg_state >= HTTP_MSG_TRAILERS)) {
6703 b_adv(res->buf, msg->next);
6704 msg->next = 0;
6705 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6706 }
6707
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6708 if (res->flags & CF_SHUTW)
6709 goto aborted_xfer;
6710
6711 /* stop waiting for data if the input is closed before the end. If the
6712 * client side was already closed, it means that the client has aborted,
6713 * so we don't want to count this as a server abort. Otherwise it's a
6714 * server abort.
6715 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6716 if (res->flags & CF_SHUTR) {
Willy Tarreaub2c6a782014-04-23 20:29:01 +0200[diff] [blame]6717 if ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6718 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6719 if (!(s->flags & SN_ERR_MASK))
6720 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6721 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6722 if (objt_server(s->target))
6723 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6724 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6725 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6726
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6727 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6728 if (!s->req->analysers)
6729 goto return_bad_res;
6730
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6731 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6732 * 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]6733 * Similarly, with keep-alive on the client side, we don't want to forward a
6734 * close.
6735 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6736 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6737 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6738 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6739 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6740
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6741 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6742 * 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]6743 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6744 * modes are already handled by the stream sock layer. We must not do
6745 * this in content-length mode because it could present the MSG_MORE
6746 * flag with the last block of forwarded data, which would cause an
6747 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6748 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6749 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6750 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6751
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6752 /* the session handler will take care of timeouts and errors */
6753 return 0;
6754
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6755 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6756 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6757 if (objt_server(s->target))
6758 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6759
6760 return_bad_res_stats_ok:
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]6761 if (unlikely(compressing)) {
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6762 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]6763 compressing = 0;
6764 }
6765
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6766 /* we may have some pending data starting at res->buf->p */
6767 if (s->comp_algo == NULL) {
6768 b_adv(res->buf, msg->next);
6769 msg->next = 0;
6770 }
6771
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6772 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6773 /* don't send any error message as we're in the body */
6774 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6775 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6776 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]6777 if (objt_server(s->target))
6778 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6779
6780 if (!(s->flags & SN_ERR_MASK))
6781 s->flags |= SN_ERR_PRXCOND;
6782 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6783 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6784 return 0;
6785
6786 aborted_xfer:
Willy Tarreau6fef8ae2014-04-22 21:22:06 +0200[diff] [blame]6787 if (unlikely(compressing)) {
6788 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
6789 compressing = 0;
6790 }
6791
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6792 txn->rsp.msg_state = HTTP_MSG_ERROR;
6793 /* don't send any error message as we're in the body */
6794 stream_int_retnclose(res->cons, NULL);
6795 res->analysers = 0;
6796 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6797
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6798 s->fe->fe_counters.cli_aborts++;
6799 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6800 if (objt_server(s->target))
6801 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6802
6803 if (!(s->flags & SN_ERR_MASK))
6804 s->flags |= SN_ERR_CLICL;
6805 if (!(s->flags & SN_FINST_MASK))
6806 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6807 return 0;
6808}
6809
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6810/* Iterate the same filter through all request headers.
6811 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6812 * Since it can manage the switch to another backend, it updates the per-proxy
6813 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6814 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6815int 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]6816{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6817 char *cur_ptr, *cur_end, *cur_next;
6818 int cur_idx, old_idx, last_hdr;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6819 struct http_txn *txn = &s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6820 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6821 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6822
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6823 last_hdr = 0;
6824
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6825 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6826 old_idx = 0;
6827
6828 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6829 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6830 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6831 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6832 (exp->action == ACT_ALLOW ||
6833 exp->action == ACT_DENY ||
6834 exp->action == ACT_TARPIT))
6835 return 0;
6836
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6837 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6838 if (!cur_idx)
6839 break;
6840
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6841 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6842 cur_ptr = cur_next;
6843 cur_end = cur_ptr + cur_hdr->len;
6844 cur_next = cur_end + cur_hdr->cr + 1;
6845
6846 /* Now we have one header between cur_ptr and cur_end,
6847 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6848 */
6849
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]6850 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]6851 switch (exp->action) {
6852 case ACT_SETBE:
6853 /* It is not possible to jump a second time.
6854 * FIXME: should we return an HTTP/500 here so that
6855 * the admin knows there's a problem ?
6856 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6857 if (s->be != s->fe)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6858 break;
6859
6860 /* Swithing Proxy */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6861 session_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6862 last_hdr = 1;
6863 break;
6864
6865 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6866 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6867 last_hdr = 1;
6868 break;
6869
6870 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6871 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6872 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6873 break;
6874
6875 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6876 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6877 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6878 break;
6879
6880 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]6881 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
6882 if (trash.len < 0)
6883 return -1;
6884
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6885 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6886 /* FIXME: if the user adds a newline in the replacement, the
6887 * index will not be recalculated for now, and the new line
6888 * will not be counted as a new header.
6889 */
6890
6891 cur_end += delta;
6892 cur_next += delta;
6893 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6894 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6895 break;
6896
6897 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6898 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6899 cur_next += delta;
6900
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6901 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6902 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6903 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6904 cur_hdr->len = 0;
6905 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6906 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6907 break;
6908
6909 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6910 }
6911
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6912 /* keep the link from this header to next one in case of later
6913 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6914 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6915 old_idx = cur_idx;
6916 }
6917 return 0;
6918}
6919
6920
6921/* Apply the filter to the request line.
6922 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6923 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6924 * Since it can manage the switch to another backend, it updates the per-proxy
6925 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6926 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6927int 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]6928{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6929 char *cur_ptr, *cur_end;
6930 int done;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6931 struct http_txn *txn = &s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6932 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6933
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6934 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6935 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6936 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6937 (exp->action == ACT_ALLOW ||
6938 exp->action == ACT_DENY ||
6939 exp->action == ACT_TARPIT))
6940 return 0;
6941 else if (exp->action == ACT_REMOVE)
6942 return 0;
6943
6944 done = 0;
6945
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6946 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6947 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6948
6949 /* Now we have the request line between cur_ptr and cur_end */
6950
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]6951 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]6952 switch (exp->action) {
6953 case ACT_SETBE:
6954 /* It is not possible to jump a second time.
6955 * FIXME: should we return an HTTP/500 here so that
6956 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6957 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6958 if (s->be != s->fe)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6959 break;
6960
6961 /* Swithing Proxy */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6962 session_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6963 done = 1;
6964 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6965
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6966 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6967 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6968 done = 1;
6969 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6970
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6971 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6972 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6973 done = 1;
6974 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6975
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6976 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6977 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6978 done = 1;
6979 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6980
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6981 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]6982 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
6983 if (trash.len < 0)
6984 return -1;
6985
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6986 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6987 /* FIXME: if the user adds a newline in the replacement, the
6988 * index will not be recalculated for now, and the new line
6989 * will not be counted as a new header.
6990 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6991
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6992 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6993 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6994 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6995 HTTP_MSG_RQMETH,
6996 cur_ptr, cur_end + 1,
6997 NULL, NULL);
6998 if (unlikely(!cur_end))
6999 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7000
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7001 /* we have a full request and we know that we have either a CR
7002 * or an LF at <ptr>.
7003 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7004 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7005 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]7006 /* there is no point trying this regex on headers */
7007 return 1;
7008 }
7009 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7010 return done;
7011}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7012
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7013
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7014
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7015/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7016 * 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]7017 * 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]7018 * unparsable request. Since it can manage the switch to another backend, it
7019 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7020 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7021int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7022{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7023 struct http_txn *txn = &s->txn;
7024 struct hdr_exp *exp;
7025
7026 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7027 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7028
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7029 /*
7030 * The interleaving of transformations and verdicts
7031 * makes it difficult to decide to continue or stop
7032 * the evaluation.
7033 */
7034
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7035 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7036 break;
7037
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7038 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7039 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7040 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7041 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7042
7043 /* if this filter had a condition, evaluate it now and skip to
7044 * next filter if the condition does not match.
7045 */
7046 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7047 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]7048 ret = acl_pass(ret);
7049 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7050 ret = !ret;
7051
7052 if (!ret)
7053 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7054 }
7055
7056 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7057 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7058 if (unlikely(ret < 0))
7059 return -1;
7060
7061 if (likely(ret == 0)) {
7062 /* The filter did not match the request, it can be
7063 * iterated through all headers.
7064 */
Willy Tarreaua256fae2015-01-30 20:58:58 +0100[diff] [blame]7065 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7066 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7067 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7068 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7069 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7070}
7071
7072
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7073
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7074/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7075 * Try to retrieve the server associated to the appsession.
7076 * If the server is found, it's assigned to the session.
7077 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7078void manage_client_side_appsession(struct session *s, const char *buf, int len) {
7079 struct http_txn *txn = &s->txn;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7080 appsess *asession = NULL;
7081 char *sessid_temp = NULL;
7082
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7083 if (len > s->be->appsession_len) {
7084 len = s->be->appsession_len;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7085 }
7086
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7087 if (s->be->options2 & PR_O2_AS_REQL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7088 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7089 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7090 /* 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]7091 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7092 }
7093
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7094 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7095 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7096 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]7097 return;
7098 }
7099
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7100 memcpy(txn->sessid, buf, len);
7101 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7102 }
7103
7104 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
7105 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7106 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]7107 return;
7108 }
7109
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7110 memcpy(sessid_temp, buf, len);
7111 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7112
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7113 asession = appsession_hash_lookup(&(s->be->htbl_proxy), sessid_temp);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7114 /* free previously allocated memory */
7115 pool_free2(apools.sessid, sessid_temp);
7116
7117 if (asession != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7118 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
7119 if (!(s->be->options2 & PR_O2_AS_REQL))
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7120 asession->request_count++;
7121
7122 if (asession->serverid != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7123 struct server *srv = s->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7124
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7125 while (srv) {
7126 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7127 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7128 (s->be->options & PR_O_PERSIST) ||
7129 (s->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7130 /* we found the server and it's usable */
7131 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7132 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7133 s->flags |= SN_DIRECT | SN_ASSIGNED;
7134 s->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]7135
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7136 break;
7137 } else {
7138 txn->flags &= ~TX_CK_MASK;
7139 txn->flags |= TX_CK_DOWN;
7140 }
7141 }
7142 srv = srv->next;
7143 }
7144 }
7145 }
7146}
7147
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7148/* Find the end of a cookie value contained between <s> and <e>. It works the
7149 * same way as with headers above except that the semi-colon also ends a token.
7150 * See RFC2965 for more information. Note that it requires a valid header to
7151 * return a valid result.
7152 */
7153char *find_cookie_value_end(char *s, const char *e)
7154{
7155 int quoted, qdpair;
7156
7157 quoted = qdpair = 0;
7158 for (; s < e; s++) {
7159 if (qdpair) qdpair = 0;
7160 else if (quoted) {
7161 if (*s == '\\') qdpair = 1;
7162 else if (*s == '"') quoted = 0;
7163 }
7164 else if (*s == '"') quoted = 1;
7165 else if (*s == ',' || *s == ';') return s;
7166 }
7167 return s;
7168}
7169
7170/* Delete a value in a header between delimiters <from> and <next> in buffer
7171 * <buf>. The number of characters displaced is returned, and the pointer to
7172 * the first delimiter is updated if required. The function tries as much as
7173 * possible to respect the following principles :
7174 * - replace <from> delimiter by the <next> one unless <from> points to a
7175 * colon, in which case <next> is simply removed
7176 * - set exactly one space character after the new first delimiter, unless
7177 * there are not enough characters in the block being moved to do so.
7178 * - remove unneeded spaces before the previous delimiter and after the new
7179 * one.
7180 *
7181 * It is the caller's responsibility to ensure that :
7182 * - <from> points to a valid delimiter or the colon ;
7183 * - <next> points to a valid delimiter or the final CR/LF ;
7184 * - there are non-space chars before <from> ;
7185 * - there is a CR/LF at or after <next>.
7186 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7187int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7188{
7189 char *prev = *from;
7190
7191 if (*prev == ':') {
7192 /* We're removing the first value, preserve the colon and add a
7193 * space if possible.
7194 */
7195 if (!http_is_crlf[(unsigned char)*next])
7196 next++;
7197 prev++;
7198 if (prev < next)
7199 *prev++ = ' ';
7200
7201 while (http_is_spht[(unsigned char)*next])
7202 next++;
7203 } else {
7204 /* Remove useless spaces before the old delimiter. */
7205 while (http_is_spht[(unsigned char)*(prev-1)])
7206 prev--;
7207 *from = prev;
7208
7209 /* copy the delimiter and if possible a space if we're
7210 * not at the end of the line.
7211 */
7212 if (!http_is_crlf[(unsigned char)*next]) {
7213 *prev++ = *next++;
7214 if (prev + 1 < next)
7215 *prev++ = ' ';
7216 while (http_is_spht[(unsigned char)*next])
7217 next++;
7218 }
7219 }
7220 return buffer_replace2(buf, prev, next, NULL, 0);
7221}
7222
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7223/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7224 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7225 * desirable to call it only when needed. This code is quite complex because
7226 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7227 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7228 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7229void manage_client_side_cookies(struct session *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7230{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7231 struct http_txn *txn = &s->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7232 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7233 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7234 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7235 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7236
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7237 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7238 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7239 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7240
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7241 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7242 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7243 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7244
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7245 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7246 hdr_beg = hdr_next;
7247 hdr_end = hdr_beg + cur_hdr->len;
7248 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7249
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7250 /* We have one full header between hdr_beg and hdr_end, and the
7251 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7252 * "Cookie:" headers.
7253 */
7254
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7255 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7256 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7257 old_idx = cur_idx;
7258 continue;
7259 }
7260
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7261 del_from = NULL; /* nothing to be deleted */
7262 preserve_hdr = 0; /* assume we may kill the whole header */
7263
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7264 /* Now look for cookies. Conforming to RFC2109, we have to support
7265 * attributes whose name begin with a '$', and associate them with
7266 * the right cookie, if we want to delete this cookie.
7267 * So there are 3 cases for each cookie read :
7268 * 1) it's a special attribute, beginning with a '$' : ignore it.
7269 * 2) it's a server id cookie that we *MAY* want to delete : save
7270 * some pointers on it (last semi-colon, beginning of cookie...)
7271 * 3) it's an application cookie : we *MAY* have to delete a previous
7272 * "special" cookie.
7273 * At the end of loop, if a "special" cookie remains, we may have to
7274 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7275 * *MUST* delete it.
7276 *
7277 * Note: RFC2965 is unclear about the processing of spaces around
7278 * the equal sign in the ATTR=VALUE form. A careful inspection of
7279 * the RFC explicitly allows spaces before it, and not within the
7280 * tokens (attrs or values). An inspection of RFC2109 allows that
7281 * too but section 10.1.3 lets one think that spaces may be allowed
7282 * after the equal sign too, resulting in some (rare) buggy
7283 * implementations trying to do that. So let's do what servers do.
7284 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7285 * allowed quoted strings in values, with any possible character
7286 * after a backslash, including control chars and delimitors, which
7287 * causes parsing to become ambiguous. Browsers also allow spaces
7288 * within values even without quotes.
7289 *
7290 * We have to keep multiple pointers in order to support cookie
7291 * removal at the beginning, middle or end of header without
7292 * corrupting the header. All of these headers are valid :
7293 *
7294 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7295 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7296 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7297 * | | | | | | | | |
7298 * | | | | | | | | hdr_end <--+
7299 * | | | | | | | +--> next
7300 * | | | | | | +----> val_end
7301 * | | | | | +-----------> val_beg
7302 * | | | | +--------------> equal
7303 * | | | +----------------> att_end
7304 * | | +---------------------> att_beg
7305 * | +--------------------------> prev
7306 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7307 */
7308
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7309 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7310 /* Iterate through all cookies on this line */
7311
7312 /* find att_beg */
7313 att_beg = prev + 1;
7314 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7315 att_beg++;
7316
7317 /* find att_end : this is the first character after the last non
7318 * space before the equal. It may be equal to hdr_end.
7319 */
7320 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7321
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7322 while (equal < hdr_end) {
7323 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7324 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7325 if (http_is_spht[(unsigned char)*equal++])
7326 continue;
7327 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7328 }
7329
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7330 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7331 * is between <att_beg> and <equal>, both may be identical.
7332 */
7333
7334 /* look for end of cookie if there is an equal sign */
7335 if (equal < hdr_end && *equal == '=') {
7336 /* look for the beginning of the value */
7337 val_beg = equal + 1;
7338 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7339 val_beg++;
7340
7341 /* find the end of the value, respecting quotes */
7342 next = find_cookie_value_end(val_beg, hdr_end);
7343
7344 /* make val_end point to the first white space or delimitor after the value */
7345 val_end = next;
7346 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7347 val_end--;
7348 } else {
7349 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7350 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7351
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7352 /* We have nothing to do with attributes beginning with '$'. However,
7353 * they will automatically be removed if a header before them is removed,
7354 * since they're supposed to be linked together.
7355 */
7356 if (*att_beg == '$')
7357 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7358
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7359 /* Ignore cookies with no equal sign */
7360 if (equal == next) {
7361 /* This is not our cookie, so we must preserve it. But if we already
7362 * scheduled another cookie for removal, we cannot remove the
7363 * complete header, but we can remove the previous block itself.
7364 */
7365 preserve_hdr = 1;
7366 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7367 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7368 val_end += delta;
7369 next += delta;
7370 hdr_end += delta;
7371 hdr_next += delta;
7372 cur_hdr->len += delta;
7373 http_msg_move_end(&txn->req, delta);
7374 prev = del_from;
7375 del_from = NULL;
7376 }
7377 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7378 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7379
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7380 /* if there are spaces around the equal sign, we need to
7381 * strip them otherwise we'll get trouble for cookie captures,
7382 * or even for rewrites. Since this happens extremely rarely,
7383 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7384 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7385 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7386 int stripped_before = 0;
7387 int stripped_after = 0;
7388
7389 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7390 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7391 equal += stripped_before;
7392 val_beg += stripped_before;
7393 }
7394
7395 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7396 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7397 val_beg += stripped_after;
7398 stripped_before += stripped_after;
7399 }
7400
7401 val_end += stripped_before;
7402 next += stripped_before;
7403 hdr_end += stripped_before;
7404 hdr_next += stripped_before;
7405 cur_hdr->len += stripped_before;
7406 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7407 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7408 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7409
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7410 /* First, let's see if we want to capture this cookie. We check
7411 * that we don't already have a client side cookie, because we
7412 * can only capture one. Also as an optimisation, we ignore
7413 * cookies shorter than the declared name.
7414 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7415 if (s->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7416 (val_end - att_beg >= s->fe->capture_namelen) &&
7417 memcmp(att_beg, s->fe->capture_name, s->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7418 int log_len = val_end - att_beg;
7419
7420 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7421 Alert("HTTP logging : out of memory.\n");
7422 } else {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7423 if (log_len > s->fe->capture_len)
7424 log_len = s->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7425 memcpy(txn->cli_cookie, att_beg, log_len);
7426 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7427 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7428 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7429
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7430 /* Persistence cookies in passive, rewrite or insert mode have the
7431 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7432 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7433 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7434 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7435 * For cookies in prefix mode, the form is :
7436 *
7437 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7438 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7439 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7440 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7441 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7442 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7443
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7444 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7445 * have the server ID between val_beg and delim, and the original cookie between
7446 * delim+1 and val_end. Otherwise, delim==val_end :
7447 *
7448 * Cookie: NAME=SRV; # in all but prefix modes
7449 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7450 * | || || | |+-> next
7451 * | || || | +--> val_end
7452 * | || || +---------> delim
7453 * | || |+------------> val_beg
7454 * | || +-------------> att_end = equal
7455 * | |+-----------------> att_beg
7456 * | +------------------> prev
7457 * +-------------------------> hdr_beg
7458 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7459
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7460 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7461 for (delim = val_beg; delim < val_end; delim++)
7462 if (*delim == COOKIE_DELIM)
7463 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7464 } else {
7465 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7466 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7467 /* Now check if the cookie contains a date field, which would
7468 * appear after a vertical bar ('|') just after the server name
7469 * and before the delimiter.
7470 */
7471 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7472 if (vbar1) {
7473 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7474 * right is the last seen date. It is a base64 encoded
7475 * 30-bit value representing the UNIX date since the
7476 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7477 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7478 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7479 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7480 if (val_end - vbar1 >= 5) {
7481 val = b64tos30(vbar1);
7482 if (val > 0)
7483 txn->cookie_last_date = val << 2;
7484 }
7485 /* look for a second vertical bar */
7486 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7487 if (vbar1 && (val_end - vbar1 > 5)) {
7488 val = b64tos30(vbar1 + 1);
7489 if (val > 0)
7490 txn->cookie_first_date = val << 2;
7491 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7492 }
7493 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7494
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7495 /* if the cookie has an expiration date and the proxy wants to check
7496 * it, then we do that now. We first check if the cookie is too old,
7497 * then only if it has expired. We detect strict overflow because the
7498 * time resolution here is not great (4 seconds). Cookies with dates
7499 * in the future are ignored if their offset is beyond one day. This
7500 * allows an admin to fix timezone issues without expiring everyone
7501 * and at the same time avoids keeping unwanted side effects for too
7502 * long.
7503 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7504 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7505 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7506 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7507 txn->flags &= ~TX_CK_MASK;
7508 txn->flags |= TX_CK_OLD;
7509 delim = val_beg; // let's pretend we have not found the cookie
7510 txn->cookie_first_date = 0;
7511 txn->cookie_last_date = 0;
7512 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7513 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7514 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7515 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7516 txn->flags &= ~TX_CK_MASK;
7517 txn->flags |= TX_CK_EXPIRED;
7518 delim = val_beg; // let's pretend we have not found the cookie
7519 txn->cookie_first_date = 0;
7520 txn->cookie_last_date = 0;
7521 }
7522
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7523 /* Here, we'll look for the first running server which supports the cookie.
7524 * This allows to share a same cookie between several servers, for example
7525 * to dedicate backup servers to specific servers only.
7526 * However, to prevent clients from sticking to cookie-less backup server
7527 * when they have incidentely learned an empty cookie, we simply ignore
7528 * empty cookies and mark them as invalid.
7529 * The same behaviour is applied when persistence must be ignored.
7530 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7531 if ((delim == val_beg) || (s->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7532 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7533
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7534 while (srv) {
7535 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7536 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7537 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7538 (s->be->options & PR_O_PERSIST) ||
7539 (s->flags & SN_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7540 /* we found the server and we can use it */
7541 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7542 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7543 s->flags |= SN_DIRECT | SN_ASSIGNED;
7544 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7545 break;
7546 } else {
7547 /* we found a server, but it's down,
7548 * mark it as such and go on in case
7549 * another one is available.
7550 */
7551 txn->flags &= ~TX_CK_MASK;
7552 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7553 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7554 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7555 srv = srv->next;
7556 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7557
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7558 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7559 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7560 txn->flags &= ~TX_CK_MASK;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7561 if ((s->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7562 txn->flags |= TX_CK_UNUSED;
7563 else
7564 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7565 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7566
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7567 /* depending on the cookie mode, we may have to either :
7568 * - delete the complete cookie if we're in insert+indirect mode, so that
7569 * the server never sees it ;
7570 * - remove the server id from the cookie value, and tag the cookie as an
7571 * application cookie so that it does not get accidentely removed later,
7572 * if we're in cookie prefix mode
7573 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7574 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7575 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7576
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7577 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7578 val_end += delta;
7579 next += delta;
7580 hdr_end += delta;
7581 hdr_next += delta;
7582 cur_hdr->len += delta;
7583 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7584
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7585 del_from = NULL;
7586 preserve_hdr = 1; /* we want to keep this cookie */
7587 }
7588 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7589 (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]7590 del_from = prev;
7591 }
7592 } else {
7593 /* This is not our cookie, so we must preserve it. But if we already
7594 * scheduled another cookie for removal, we cannot remove the
7595 * complete header, but we can remove the previous block itself.
7596 */
7597 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7598
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7599 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7600 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7601 if (att_beg >= del_from)
7602 att_beg += delta;
7603 if (att_end >= del_from)
7604 att_end += delta;
7605 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7606 val_end += delta;
7607 next += delta;
7608 hdr_end += delta;
7609 hdr_next += delta;
7610 cur_hdr->len += delta;
7611 http_msg_move_end(&txn->req, delta);
7612 prev = del_from;
7613 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7614 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7615 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7616
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7617 /* Look for the appsession cookie unless persistence must be ignored */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7618 if (!(s->flags & SN_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7619 int cmp_len, value_len;
7620 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7621
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7622 if (s->be->options2 & PR_O2_AS_PFX) {
7623 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
7624 value_begin = att_beg + s->be->appsession_name_len;
7625 value_len = val_end - att_beg - s->be->appsession_name_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7626 } else {
7627 cmp_len = att_end - att_beg;
7628 value_begin = val_beg;
7629 value_len = val_end - val_beg;
7630 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7631
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7632 /* let's see if the cookie is our appcookie */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7633 if (cmp_len == s->be->appsession_name_len &&
7634 memcmp(att_beg, s->be->appsession_name, cmp_len) == 0) {
7635 manage_client_side_appsession(s, value_begin, value_len);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7636 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7637 }
7638
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7639 /* continue with next cookie on this header line */
7640 att_beg = next;
7641 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7642
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7643 /* There are no more cookies on this line.
7644 * We may still have one (or several) marked for deletion at the
7645 * end of the line. We must do this now in two ways :
7646 * - if some cookies must be preserved, we only delete from the
7647 * mark to the end of line ;
7648 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7649 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7650 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7651 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7652 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7653 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7654 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7655 cur_hdr->len += delta;
7656 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7657 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7658
7659 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7660 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7661 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7662 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7663 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7664 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7665 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7666 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7667 }
7668
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7669 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7670 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7671 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7672}
7673
7674
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7675/* Iterate the same filter through all response headers contained in <rtr>.
7676 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7677 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7678int 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]7679{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7680 char *cur_ptr, *cur_end, *cur_next;
7681 int cur_idx, old_idx, last_hdr;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7682 struct http_txn *txn = &s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7683 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7684 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7685
7686 last_hdr = 0;
7687
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7688 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7689 old_idx = 0;
7690
7691 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7692 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7693 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7694 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7695 (exp->action == ACT_ALLOW ||
7696 exp->action == ACT_DENY))
7697 return 0;
7698
7699 cur_idx = txn->hdr_idx.v[old_idx].next;
7700 if (!cur_idx)
7701 break;
7702
7703 cur_hdr = &txn->hdr_idx.v[cur_idx];
7704 cur_ptr = cur_next;
7705 cur_end = cur_ptr + cur_hdr->len;
7706 cur_next = cur_end + cur_hdr->cr + 1;
7707
7708 /* Now we have one header between cur_ptr and cur_end,
7709 * and the next header starts at cur_next.
7710 */
7711
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]7712 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]7713 switch (exp->action) {
7714 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7715 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7716 last_hdr = 1;
7717 break;
7718
7719 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7720 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7721 last_hdr = 1;
7722 break;
7723
7724 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7725 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7726 if (trash.len < 0)
7727 return -1;
7728
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7729 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7730 /* FIXME: if the user adds a newline in the replacement, the
7731 * index will not be recalculated for now, and the new line
7732 * will not be counted as a new header.
7733 */
7734
7735 cur_end += delta;
7736 cur_next += delta;
7737 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7738 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7739 break;
7740
7741 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7742 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7743 cur_next += delta;
7744
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7745 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7746 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7747 txn->hdr_idx.used--;
7748 cur_hdr->len = 0;
7749 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7750 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7751 break;
7752
7753 }
7754 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7755
7756 /* keep the link from this header to next one in case of later
7757 * removal of next header.
7758 */
7759 old_idx = cur_idx;
7760 }
7761 return 0;
7762}
7763
7764
7765/* Apply the filter to the status line in the response buffer <rtr>.
7766 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7767 * or -1 if a replacement resulted in an invalid status line.
7768 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7769int 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]7770{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7771 char *cur_ptr, *cur_end;
7772 int done;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7773 struct http_txn *txn = &s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7774 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7775
7776
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7777 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7778 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7779 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7780 (exp->action == ACT_ALLOW ||
7781 exp->action == ACT_DENY))
7782 return 0;
7783 else if (exp->action == ACT_REMOVE)
7784 return 0;
7785
7786 done = 0;
7787
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7788 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7789 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7790
7791 /* Now we have the status line between cur_ptr and cur_end */
7792
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]7793 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]7794 switch (exp->action) {
7795 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7796 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7797 done = 1;
7798 break;
7799
7800 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7801 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7802 done = 1;
7803 break;
7804
7805 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7806 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7807 if (trash.len < 0)
7808 return -1;
7809
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7810 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7811 /* FIXME: if the user adds a newline in the replacement, the
7812 * index will not be recalculated for now, and the new line
7813 * will not be counted as a new header.
7814 */
7815
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7816 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7817 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7818 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7819 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7820 cur_ptr, cur_end + 1,
7821 NULL, NULL);
7822 if (unlikely(!cur_end))
7823 return -1;
7824
7825 /* we have a full respnse and we know that we have either a CR
7826 * or an LF at <ptr>.
7827 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7828 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]7829 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]7830 /* there is no point trying this regex on headers */
7831 return 1;
7832 }
7833 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7834 return done;
7835}
7836
7837
7838
7839/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7840 * 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]7841 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7842 * unparsable response.
7843 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7844int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7845{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7846 struct http_txn *txn = &s->txn;
7847 struct hdr_exp *exp;
7848
7849 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7850 int ret;
7851
7852 /*
7853 * The interleaving of transformations and verdicts
7854 * makes it difficult to decide to continue or stop
7855 * the evaluation.
7856 */
7857
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7858 if (txn->flags & TX_SVDENY)
7859 break;
7860
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7861 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7862 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7863 exp->action == ACT_PASS)) {
7864 exp = exp->next;
7865 continue;
7866 }
7867
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7868 /* if this filter had a condition, evaluate it now and skip to
7869 * next filter if the condition does not match.
7870 */
7871 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7872 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]7873 ret = acl_pass(ret);
7874 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7875 ret = !ret;
7876 if (!ret)
7877 continue;
7878 }
7879
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7880 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7881 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7882 if (unlikely(ret < 0))
7883 return -1;
7884
7885 if (likely(ret == 0)) {
7886 /* The filter did not match the response, it can be
7887 * iterated through all headers.
7888 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7889 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
7890 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7891 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7892 }
7893 return 0;
7894}
7895
7896
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7897/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7898 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7899 * desirable to call it only when needed. This function is also used when we
7900 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7901 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7902void manage_server_side_cookies(struct session *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7903{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7904 struct http_txn *txn = &s->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7905 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7906 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7907 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7908 char *hdr_beg, *hdr_end, *hdr_next;
7909 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7910
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7911 /* Iterate through the headers.
7912 * we start with the start line.
7913 */
7914 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7915 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7916
7917 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7918 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7919 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7920
7921 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7922 hdr_beg = hdr_next;
7923 hdr_end = hdr_beg + cur_hdr->len;
7924 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7925
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7926 /* We have one full header between hdr_beg and hdr_end, and the
7927 * next header starts at hdr_next. We're only interested in
7928 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7929 */
7930
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7931 is_cookie2 = 0;
7932 prev = hdr_beg + 10;
7933 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7934 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7935 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7936 if (!val) {
7937 old_idx = cur_idx;
7938 continue;
7939 }
7940 is_cookie2 = 1;
7941 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7942 }
7943
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7944 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7945 * <prev> points to the colon.
7946 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7947 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7948
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7949 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7950 * check-cache is enabled) and we are not interested in checking
7951 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7952 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7953 if (s->be->cookie_name == NULL &&
7954 s->be->appsession_name == NULL &&
7955 s->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7956 return;
7957
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7958 /* OK so now we know we have to process this response cookie.
7959 * The format of the Set-Cookie header is slightly different
7960 * from the format of the Cookie header in that it does not
7961 * support the comma as a cookie delimiter (thus the header
7962 * cannot be folded) because the Expires attribute described in
7963 * the original Netscape's spec may contain an unquoted date
7964 * with a comma inside. We have to live with this because
7965 * many browsers don't support Max-Age and some browsers don't
7966 * support quoted strings. However the Set-Cookie2 header is
7967 * clean.
7968 *
7969 * We have to keep multiple pointers in order to support cookie
7970 * removal at the beginning, middle or end of header without
7971 * corrupting the header (in case of set-cookie2). A special
7972 * pointer, <scav> points to the beginning of the set-cookie-av
7973 * fields after the first semi-colon. The <next> pointer points
7974 * either to the end of line (set-cookie) or next unquoted comma
7975 * (set-cookie2). All of these headers are valid :
7976 *
7977 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7978 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7979 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7980 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7981 * | | | | | | | | | |
7982 * | | | | | | | | +-> next hdr_end <--+
7983 * | | | | | | | +------------> scav
7984 * | | | | | | +--------------> val_end
7985 * | | | | | +--------------------> val_beg
7986 * | | | | +----------------------> equal
7987 * | | | +------------------------> att_end
7988 * | | +----------------------------> att_beg
7989 * | +------------------------------> prev
7990 * +-----------------------------------------> hdr_beg
7991 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7992
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7993 for (; prev < hdr_end; prev = next) {
7994 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7995
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7996 /* find att_beg */
7997 att_beg = prev + 1;
7998 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7999 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8000
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8001 /* find att_end : this is the first character after the last non
8002 * space before the equal. It may be equal to hdr_end.
8003 */
8004 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8005
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8006 while (equal < hdr_end) {
8007 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8008 break;
8009 if (http_is_spht[(unsigned char)*equal++])
8010 continue;
8011 att_end = equal;
8012 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8013
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8014 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8015 * is between <att_beg> and <equal>, both may be identical.
8016 */
8017
8018 /* look for end of cookie if there is an equal sign */
8019 if (equal < hdr_end && *equal == '=') {
8020 /* look for the beginning of the value */
8021 val_beg = equal + 1;
8022 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8023 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8024
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8025 /* find the end of the value, respecting quotes */
8026 next = find_cookie_value_end(val_beg, hdr_end);
8027
8028 /* make val_end point to the first white space or delimitor after the value */
8029 val_end = next;
8030 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8031 val_end--;
8032 } else {
8033 /* <equal> points to next comma, semi-colon or EOL */
8034 val_beg = val_end = next = equal;
8035 }
8036
8037 if (next < hdr_end) {
8038 /* Set-Cookie2 supports multiple cookies, and <next> points to
8039 * a colon or semi-colon before the end. So skip all attr-value
8040 * pairs and look for the next comma. For Set-Cookie, since
8041 * commas are permitted in values, skip to the end.
8042 */
8043 if (is_cookie2)
8044 next = find_hdr_value_end(next, hdr_end);
8045 else
8046 next = hdr_end;
8047 }
8048
8049 /* Now everything is as on the diagram above */
8050
8051 /* Ignore cookies with no equal sign */
8052 if (equal == val_end)
8053 continue;
8054
8055 /* If there are spaces around the equal sign, we need to
8056 * strip them otherwise we'll get trouble for cookie captures,
8057 * or even for rewrites. Since this happens extremely rarely,
8058 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8059 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8060 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8061 int stripped_before = 0;
8062 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8063
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8064 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8065 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8066 equal += stripped_before;
8067 val_beg += stripped_before;
8068 }
8069
8070 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8071 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8072 val_beg += stripped_after;
8073 stripped_before += stripped_after;
8074 }
8075
8076 val_end += stripped_before;
8077 next += stripped_before;
8078 hdr_end += stripped_before;
8079 hdr_next += stripped_before;
8080 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8081 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8082 }
8083
8084 /* First, let's see if we want to capture this cookie. We check
8085 * that we don't already have a server side cookie, because we
8086 * can only capture one. Also as an optimisation, we ignore
8087 * cookies shorter than the declared name.
8088 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8089 if (s->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8090 txn->srv_cookie == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8091 (val_end - att_beg >= s->fe->capture_namelen) &&
8092 memcmp(att_beg, s->fe->capture_name, s->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8093 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8094 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8095 Alert("HTTP logging : out of memory.\n");
8096 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8097 else {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8098 if (log_len > s->fe->capture_len)
8099 log_len = s->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8100 memcpy(txn->srv_cookie, att_beg, log_len);
8101 txn->srv_cookie[log_len] = 0;
8102 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8103 }
8104
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8105 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8106 /* now check if we need to process it for persistence */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8107 if (!(s->flags & SN_IGNORE_PRST) &&
8108 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8109 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8110 /* assume passive cookie by default */
8111 txn->flags &= ~TX_SCK_MASK;
8112 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8113
8114 /* If the cookie is in insert mode on a known server, we'll delete
8115 * this occurrence because we'll insert another one later.
8116 * 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]8117 * a direct access.
8118 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8119 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8120 /* The "preserve" flag was set, we don't want to touch the
8121 * server's cookie.
8122 */
8123 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8124 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
8125 ((s->flags & SN_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8126 /* this cookie must be deleted */
8127 if (*prev == ':' && next == hdr_end) {
8128 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8129 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8130 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8131 txn->hdr_idx.used--;
8132 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8133 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8134 hdr_next += delta;
8135 http_msg_move_end(&txn->rsp, delta);
8136 /* note: while both invalid now, <next> and <hdr_end>
8137 * are still equal, so the for() will stop as expected.
8138 */
8139 } else {
8140 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8141 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8142 next = prev;
8143 hdr_end += delta;
8144 hdr_next += delta;
8145 cur_hdr->len += delta;
8146 http_msg_move_end(&txn->rsp, delta);
8147 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8148 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8149 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8150 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8151 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8152 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8153 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8154 * with this server since we know it.
8155 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8156 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8157 next += delta;
8158 hdr_end += delta;
8159 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8160 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8161 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8162
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8163 txn->flags &= ~TX_SCK_MASK;
8164 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8165 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8166 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8167 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8168 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8169 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8170 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8171 next += delta;
8172 hdr_end += delta;
8173 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8174 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8175 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8176
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8177 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8178 txn->flags &= ~TX_SCK_MASK;
8179 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8180 }
8181 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]8182 /* 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]8183 else if (!(s->flags & SN_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8184 int cmp_len, value_len;
8185 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8186
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8187 if (s->be->options2 & PR_O2_AS_PFX) {
8188 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
8189 value_begin = att_beg + s->be->appsession_name_len;
8190 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]8191 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8192 cmp_len = att_end - att_beg;
8193 value_begin = val_beg;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8194 value_len = MIN(s->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8195 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8196
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8197 if ((cmp_len == s->be->appsession_name_len) &&
8198 (memcmp(att_beg, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8199 /* free a possibly previously allocated memory */
8200 pool_free2(apools.sessid, txn->sessid);
8201
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8202 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8203 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8204 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8205 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]8206 return;
8207 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8208 memcpy(txn->sessid, value_begin, value_len);
8209 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8210 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8211 }
8212 /* that's done for this cookie, check the next one on the same
8213 * line when next != hdr_end (only if is_cookie2).
8214 */
8215 }
8216 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8217 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8218 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8219
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8220 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8221 appsess *asession = NULL;
8222 /* only do insert, if lookup fails */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8223 asession = appsession_hash_lookup(&(s->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8224 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]8225 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8226 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
8227 Alert("Not enough Memory process_srv():asession:calloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8228 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8229 return;
8230 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8231 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
8232
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8233 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
8234 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8235 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8236 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8237 return;
8238 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8239 memcpy(asession->sessid, txn->sessid, s->be->appsession_len);
8240 asession->sessid[s->be->appsession_len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8241
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8242 server_id_len = strlen(objt_server(s->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8243 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8244 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8245 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8246 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8247 return;
8248 }
8249 asession->serverid[0] = '\0';
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8250 memcpy(asession->serverid, objt_server(s->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8251
8252 asession->request_count = 0;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8253 appsession_hash_insert(&(s->be->htbl_proxy), asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8254 }
8255
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8256 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8257 asession->request_count++;
8258 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8259}
8260
8261
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8262/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8263 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8264 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8265void check_response_for_cacheability(struct session *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8266{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8267 struct http_txn *txn = &s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8268 char *p1, *p2;
8269
8270 char *cur_ptr, *cur_end, *cur_next;
8271 int cur_idx;
8272
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8273 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8274 return;
8275
8276 /* Iterate through the headers.
8277 * we start with the start line.
8278 */
8279 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8280 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8281
8282 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8283 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8284 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8285
8286 cur_hdr = &txn->hdr_idx.v[cur_idx];
8287 cur_ptr = cur_next;
8288 cur_end = cur_ptr + cur_hdr->len;
8289 cur_next = cur_end + cur_hdr->cr + 1;
8290
8291 /* We have one full header between cur_ptr and cur_end, and the
8292 * next header starts at cur_next. We're only interested in
8293 * "Cookie:" headers.
8294 */
8295
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8296 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8297 if (val) {
8298 if ((cur_end - (cur_ptr + val) >= 8) &&
8299 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8300 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8301 return;
8302 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8303 }
8304
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8305 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8306 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8307 continue;
8308
8309 /* OK, right now we know we have a cache-control header at cur_ptr */
8310
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8311 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8312
8313 if (p1 >= cur_end) /* no more info */
8314 continue;
8315
8316 /* p1 is at the beginning of the value */
8317 p2 = p1;
8318
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8319 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8320 p2++;
8321
8322 /* we have a complete value between p1 and p2 */
8323 if (p2 < cur_end && *p2 == '=') {
8324 /* we have something of the form no-cache="set-cookie" */
8325 if ((cur_end - p1 >= 21) &&
8326 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8327 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8328 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8329 continue;
8330 }
8331
8332 /* OK, so we know that either p2 points to the end of string or to a comma */
8333 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8334 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8335 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8336 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8337 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8338 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8339 return;
8340 }
8341
8342 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8343 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8344 continue;
8345 }
8346 }
8347}
8348
8349
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8350/*
8351 * Try to retrieve a known appsession in the URI, then the associated server.
8352 * If the server is found, it's assigned to the session.
8353 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8354void get_srv_from_appsession(struct session *s, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8355{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8356 char *end_params, *first_param, *cur_param, *next_param;
8357 char separator;
8358 int value_len;
8359
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8360 int mode = s->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8361
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8362 if (s->be->appsession_name == NULL ||
8363 (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]8364 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8365 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8366
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8367 first_param = NULL;
8368 switch (mode) {
8369 case PR_O2_AS_M_PP:
8370 first_param = memchr(begin, ';', len);
8371 break;
8372 case PR_O2_AS_M_QS:
8373 first_param = memchr(begin, '?', len);
8374 break;
8375 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8376
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8377 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8378 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8379 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8380
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8381 switch (mode) {
8382 case PR_O2_AS_M_PP:
8383 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
8384 end_params = (char *) begin + len;
8385 }
8386 separator = ';';
8387 break;
8388 case PR_O2_AS_M_QS:
8389 end_params = (char *) begin + len;
8390 separator = '&';
8391 break;
8392 default:
8393 /* unknown mode, shouldn't happen */
8394 return;
8395 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8396
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8397 cur_param = next_param = end_params;
8398 while (cur_param > first_param) {
8399 cur_param--;
8400 if ((cur_param[0] == separator) || (cur_param == first_param)) {
8401 /* let's see if this is the appsession parameter */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8402 if ((cur_param + s->be->appsession_name_len + 1 < next_param) &&
8403 ((s->be->options2 & PR_O2_AS_PFX) || cur_param[s->be->appsession_name_len + 1] == '=') &&
8404 (strncasecmp(cur_param + 1, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8405 /* Cool... it's the right one */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8406 cur_param += s->be->appsession_name_len + (s->be->options2 & PR_O2_AS_PFX ? 1 : 2);
8407 value_len = MIN(s->be->appsession_len, next_param - cur_param);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8408 if (value_len > 0) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8409 manage_client_side_appsession(s, cur_param, value_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8410 }
8411 break;
8412 }
8413 next_param = cur_param;
8414 }
8415 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8416#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]8417 Alert("get_srv_from_appsession\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8418 appsession_hash_dump(&(s->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8419#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8420}
8421
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8422/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8423 * 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]8424 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8425 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8426 * 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]8427 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8428 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8429 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8430 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8431int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8432{
8433 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8434 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8435 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8436
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8437 if (!uri_auth)
8438 return 0;
8439
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8440 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]8441 return 0;
8442
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8443 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8444 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8445 return 0;
8446
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8447 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8448 return 0;
8449
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8450 return 1;
8451}
8452
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8453/*
8454 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8455 * By default it tries to report the error position as msg->err_pos. However if
8456 * this one is not set, it will then report msg->next, which is the last known
8457 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8458 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8459 */
8460void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8461 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8462 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8463{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8464 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8465 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8466
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8467 es->len = MIN(chn->buf->i, sizeof(es->buf));
8468 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8469 len1 = MIN(len1, es->len);
8470 len2 = es->len - len1; /* remaining data if buffer wraps */
8471
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8472 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8473 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8474 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8475
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8476 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8477 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8478 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8479 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8480
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8481 es->when = date; // user-visible date
8482 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8483 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8484 es->oe = other_end;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8485 if (objt_conn(s->req->prod->end))
8486 es->src = __objt_conn(s->req->prod->end)->addr.from;
8487 else
8488 memset(&es->src, 0, sizeof(es->src));
8489
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8490 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8491 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8492 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8493 es->s_flags = s->flags;
8494 es->t_flags = s->txn.flags;
8495 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8496 es->b_out = chn->buf->o;
8497 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8498 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8499 es->m_clen = msg->chunk_len;
8500 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8501}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8502
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8503/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8504 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8505 * performed over the whole headers. Otherwise it must contain a valid header
8506 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8507 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8508 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8509 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8510 * -1. The value fetch stops at commas, so this function is suited for use with
8511 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8512 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8513 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8514unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8515 struct hdr_idx *idx, int occ,
8516 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8517{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8518 struct hdr_ctx local_ctx;
8519 char *ptr_hist[MAX_HDR_HISTORY];
8520 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8521 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8522 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8523
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8524 if (!ctx) {
8525 local_ctx.idx = 0;
8526 ctx = &local_ctx;
8527 }
8528
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8529 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8530 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8531 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8532 occ--;
8533 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8534 *vptr = ctx->line + ctx->val;
8535 *vlen = ctx->vlen;
8536 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8537 }
8538 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8539 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8540 }
8541
8542 /* negative occurrence, we scan all the list then walk back */
8543 if (-occ > MAX_HDR_HISTORY)
8544 return 0;
8545
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8546 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8547 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8548 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8549 len_hist[hist_ptr] = ctx->vlen;
8550 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8551 hist_ptr = 0;
8552 found++;
8553 }
8554 if (-occ > found)
8555 return 0;
8556 /* 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]8557 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8558 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8559 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8560 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8561 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8562 if (hist_ptr >= MAX_HDR_HISTORY)
8563 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8564 *vptr = ptr_hist[hist_ptr];
8565 *vlen = len_hist[hist_ptr];
8566 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8567}
8568
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8569/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8570 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8571 * performed over the whole headers. Otherwise it must contain a valid header
8572 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8573 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8574 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8575 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8576 * -1. This function differs from http_get_hdr() in that it only returns full
8577 * line header values and does not stop at commas.
8578 * The return value is 0 if nothing was found, or non-zero otherwise.
8579 */
8580unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8581 struct hdr_idx *idx, int occ,
8582 struct hdr_ctx *ctx, char **vptr, int *vlen)
8583{
8584 struct hdr_ctx local_ctx;
8585 char *ptr_hist[MAX_HDR_HISTORY];
8586 int len_hist[MAX_HDR_HISTORY];
8587 unsigned int hist_ptr;
8588 int found;
8589
8590 if (!ctx) {
8591 local_ctx.idx = 0;
8592 ctx = &local_ctx;
8593 }
8594
8595 if (occ >= 0) {
8596 /* search from the beginning */
8597 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8598 occ--;
8599 if (occ <= 0) {
8600 *vptr = ctx->line + ctx->val;
8601 *vlen = ctx->vlen;
8602 return 1;
8603 }
8604 }
8605 return 0;
8606 }
8607
8608 /* negative occurrence, we scan all the list then walk back */
8609 if (-occ > MAX_HDR_HISTORY)
8610 return 0;
8611
8612 found = hist_ptr = 0;
8613 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8614 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8615 len_hist[hist_ptr] = ctx->vlen;
8616 if (++hist_ptr >= MAX_HDR_HISTORY)
8617 hist_ptr = 0;
8618 found++;
8619 }
8620 if (-occ > found)
8621 return 0;
8622 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8623 * find occurrence -occ, so we have to check [hist_ptr+occ].
8624 */
8625 hist_ptr += occ;
8626 if (hist_ptr >= MAX_HDR_HISTORY)
8627 hist_ptr -= MAX_HDR_HISTORY;
8628 *vptr = ptr_hist[hist_ptr];
8629 *vlen = len_hist[hist_ptr];
8630 return 1;
8631}
8632
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8633/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8634 * Print a debug line with a header. Always stop at the first CR or LF char,
8635 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8636 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8637 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8638void debug_hdr(const char *dir, struct session *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8639{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8640 int max;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8641 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8642 dir,
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8643 objt_conn(s->req->prod->end) ? (unsigned short)objt_conn(s->req->prod->end)->t.sock.fd : -1,
8644 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]8645
8646 for (max = 0; start + max < end; max++)
8647 if (start[max] == '\r' || start[max] == '\n')
8648 break;
8649
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8650 UBOUND(max, trash.size - trash.len - 3);
8651 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8652 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8653 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8654}
8655
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8656/*
8657 * Initialize a new HTTP transaction for session <s>. It is assumed that all
8658 * the required fields are properly allocated and that we only need to (re)init
8659 * them. This should be used before processing any new request.
8660 */
8661void http_init_txn(struct session *s)
8662{
8663 struct http_txn *txn = &s->txn;
8664 struct proxy *fe = s->fe;
8665
8666 txn->flags = 0;
8667 txn->status = -1;
8668
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8669 txn->cookie_first_date = 0;
8670 txn->cookie_last_date = 0;
8671
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8672 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8673 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8674 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8675 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8676 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8677 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8678 txn->req.chunk_len = 0LL;
8679 txn->req.body_len = 0LL;
8680 txn->rsp.chunk_len = 0LL;
8681 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8682 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8683 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8684 txn->req.chn = s->req;
8685 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8686
8687 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8688
8689 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8690 if (fe->options2 & PR_O2_REQBUG_OK)
8691 txn->req.err_pos = -1; /* let buggy requests pass */
8692
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8693 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8694 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8695
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8696 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8697 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8698
8699 if (txn->hdr_idx.v)
8700 hdr_idx_init(&txn->hdr_idx);
8701}
8702
8703/* to be used at the end of a transaction */
8704void http_end_txn(struct session *s)
8705{
8706 struct http_txn *txn = &s->txn;
8707
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]8708 /* release any possible compression context */
8709 if (s->flags & SN_COMP_READY)
8710 s->comp_algo->end(&s->comp_ctx);
8711 s->comp_algo = NULL;
8712 s->flags &= ~SN_COMP_READY;
8713
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8714 /* these ones will have been dynamically allocated */
8715 pool_free2(pool2_requri, txn->uri);
8716 pool_free2(pool2_capture, txn->cli_cookie);
8717 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8718 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8719 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8720
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8721 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8722 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8723 txn->uri = NULL;
8724 txn->srv_cookie = NULL;
8725 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8726
8727 if (txn->req.cap) {
8728 struct cap_hdr *h;
8729 for (h = s->fe->req_cap; h; h = h->next)
8730 pool_free2(h->pool, txn->req.cap[h->index]);
8731 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8732 }
8733
8734 if (txn->rsp.cap) {
8735 struct cap_hdr *h;
8736 for (h = s->fe->rsp_cap; h; h = h->next)
8737 pool_free2(h->pool, txn->rsp.cap[h->index]);
8738 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8739 }
8740
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8741}
8742
8743/* to be used at the end of a transaction to prepare a new one */
8744void http_reset_txn(struct session *s)
8745{
8746 http_end_txn(s);
8747 http_init_txn(s);
8748
8749 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8750 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8751 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8752 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8753 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8754 /* re-init store persistence */
8755 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8756 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8757
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8758 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8759
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8760 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8761
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8762 /* We must trim any excess data from the response buffer, because we
8763 * may have blocked an invalid response from a server that we don't
8764 * want to accidentely forward once we disable the analysers, nor do
8765 * we want those data to come along with next response. A typical
8766 * example of such data would be from a buggy server responding to
8767 * a HEAD with some data, or sending more than the advertised
8768 * content-length.
8769 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8770 if (unlikely(s->rep->buf->i))
8771 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8772
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8773 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8774 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8775
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8776 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8777 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8778
8779 s->req->rex = TICK_ETERNITY;
8780 s->req->wex = TICK_ETERNITY;
8781 s->req->analyse_exp = TICK_ETERNITY;
8782 s->rep->rex = TICK_ETERNITY;
8783 s->rep->wex = TICK_ETERNITY;
8784 s->rep->analyse_exp = TICK_ETERNITY;
8785}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8786
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8787void free_http_res_rules(struct list *r)
8788{
8789 struct http_res_rule *tr, *pr;
8790
8791 list_for_each_entry_safe(pr, tr, r, list) {
8792 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8793 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8794 free(pr);
8795 }
8796}
8797
8798void free_http_req_rules(struct list *r)
8799{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8800 struct http_req_rule *tr, *pr;
8801
8802 list_for_each_entry_safe(pr, tr, r, list) {
8803 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8804 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8805 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8806
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8807 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8808 free(pr);
8809 }
8810}
8811
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8812/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8813struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8814{
8815 struct http_req_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]8816 struct http_req_action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8817 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8818 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8819
8820 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8821 if (!rule) {
8822 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8823 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8824 }
8825
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8826 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8827 rule->action = HTTP_REQ_ACT_ALLOW;
8828 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]8829 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8830 rule->action = HTTP_REQ_ACT_DENY;
8831 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8832 } else if (!strcmp(args[0], "tarpit")) {
8833 rule->action = HTTP_REQ_ACT_TARPIT;
8834 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8835 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8836 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8837 cur_arg = 1;
8838
8839 while(*args[cur_arg]) {
8840 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8841 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8842 cur_arg+=2;
8843 continue;
8844 } else
8845 break;
8846 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8847 } else if (!strcmp(args[0], "set-nice")) {
8848 rule->action = HTTP_REQ_ACT_SET_NICE;
8849 cur_arg = 1;
8850
8851 if (!*args[cur_arg] ||
8852 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8853 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8854 file, linenum, args[0]);
8855 goto out_err;
8856 }
8857 rule->arg.nice = atoi(args[cur_arg]);
8858 if (rule->arg.nice < -1024)
8859 rule->arg.nice = -1024;
8860 else if (rule->arg.nice > 1024)
8861 rule->arg.nice = 1024;
8862 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8863 } else if (!strcmp(args[0], "set-tos")) {
8864#ifdef IP_TOS
8865 char *err;
8866 rule->action = HTTP_REQ_ACT_SET_TOS;
8867 cur_arg = 1;
8868
8869 if (!*args[cur_arg] ||
8870 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8871 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8872 file, linenum, args[0]);
8873 goto out_err;
8874 }
8875
8876 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8877 if (err && *err != '\0') {
8878 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8879 file, linenum, err, args[0]);
8880 goto out_err;
8881 }
8882 cur_arg++;
8883#else
8884 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8885 goto out_err;
8886#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8887 } else if (!strcmp(args[0], "set-mark")) {
8888#ifdef SO_MARK
8889 char *err;
8890 rule->action = HTTP_REQ_ACT_SET_MARK;
8891 cur_arg = 1;
8892
8893 if (!*args[cur_arg] ||
8894 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8895 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8896 file, linenum, args[0]);
8897 goto out_err;
8898 }
8899
8900 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8901 if (err && *err != '\0') {
8902 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8903 file, linenum, err, args[0]);
8904 goto out_err;
8905 }
8906 cur_arg++;
8907 global.last_checks |= LSTCHK_NETADM;
8908#else
8909 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8910 goto out_err;
8911#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8912 } else if (!strcmp(args[0], "set-log-level")) {
8913 rule->action = HTTP_REQ_ACT_SET_LOGL;
8914 cur_arg = 1;
8915
8916 if (!*args[cur_arg] ||
8917 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8918 bad_log_level:
8919 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8920 file, linenum, args[0]);
8921 goto out_err;
8922 }
8923 if (strcmp(args[cur_arg], "silent") == 0)
8924 rule->arg.loglevel = -1;
8925 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8926 goto bad_log_level;
8927 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8928 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8929 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8930 cur_arg = 1;
8931
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8932 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8933 (*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]8934 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8935 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8936 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8937 }
8938
8939 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8940 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8941 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8942
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8943 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8944 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]8945 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8946 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8947 free(proxy->conf.lfs_file);
8948 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8949 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8950 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]8951 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
8952 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]8953 cur_arg = 1;
8954
8955 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann8f249f42014-06-24 11:10:00 +0200[diff] [blame]8956 (*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]8957 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
8958 file, linenum, args[0]);
8959 goto out_err;
8960 }
8961
8962 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8963 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8964 LIST_INIT(&rule->arg.hdr_add.fmt);
8965
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8966 error = NULL;
8967 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
8968 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
8969 args[cur_arg + 1], error);
8970 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8971 goto out_err;
8972 }
8973
8974 proxy->conf.args.ctx = ARGC_HRQ;
8975 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
8976 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8977 file, linenum);
8978
8979 free(proxy->conf.lfs_file);
8980 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8981 proxy->conf.lfs_line = proxy->conf.args.line;
8982 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8983 } else if (strcmp(args[0], "del-header") == 0) {
8984 rule->action = HTTP_REQ_ACT_DEL_HDR;
8985 cur_arg = 1;
8986
8987 if (!*args[cur_arg] ||
8988 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8989 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
8990 file, linenum, args[0]);
8991 goto out_err;
8992 }
8993
8994 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8995 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8996
8997 proxy->conf.args.ctx = ARGC_HRQ;
8998 free(proxy->conf.lfs_file);
8999 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9000 proxy->conf.lfs_line = proxy->conf.args.line;
9001 cur_arg += 1;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9002 } else if (strcmp(args[0], "redirect") == 0) {
9003 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9004 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9005
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9006 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]9007 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9008 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9009 goto out_err;
9010 }
9011
9012 /* this redirect rule might already contain a parsed condition which
9013 * we'll pass to the http-request rule.
9014 */
9015 rule->action = HTTP_REQ_ACT_REDIR;
9016 rule->arg.redir = redir;
9017 rule->cond = redir->cond;
9018 redir->cond = NULL;
9019 cur_arg = 2;
9020 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9021 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9022 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9023 rule->action = HTTP_REQ_ACT_ADD_ACL;
9024 /*
9025 * '+ 8' for 'add-acl('
9026 * '- 9' for 'add-acl(' + trailing ')'
9027 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9028 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9029
9030 cur_arg = 1;
9031
9032 if (!*args[cur_arg] ||
9033 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9034 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9035 file, linenum, args[0]);
9036 goto out_err;
9037 }
9038
9039 LIST_INIT(&rule->arg.map.key);
9040 proxy->conf.args.ctx = ARGC_HRQ;
9041 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9042 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9043 file, linenum);
9044 free(proxy->conf.lfs_file);
9045 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9046 proxy->conf.lfs_line = proxy->conf.args.line;
9047 cur_arg += 1;
9048 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9049 /* http-request del-acl(<reference (acl name)>) <key pattern> */
9050 rule->action = HTTP_REQ_ACT_DEL_ACL;
9051 /*
9052 * '+ 8' for 'del-acl('
9053 * '- 9' for 'del-acl(' + trailing ')'
9054 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9055 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9056
9057 cur_arg = 1;
9058
9059 if (!*args[cur_arg] ||
9060 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9061 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9062 file, linenum, args[0]);
9063 goto out_err;
9064 }
9065
9066 LIST_INIT(&rule->arg.map.key);
9067 proxy->conf.args.ctx = ARGC_HRQ;
9068 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9069 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9070 file, linenum);
9071 free(proxy->conf.lfs_file);
9072 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9073 proxy->conf.lfs_line = proxy->conf.args.line;
9074 cur_arg += 1;
9075 } else if (strncmp(args[0], "del-map", 7) == 0) {
9076 /* http-request del-map(<reference (map name)>) <key pattern> */
9077 rule->action = HTTP_REQ_ACT_DEL_MAP;
9078 /*
9079 * '+ 8' for 'del-map('
9080 * '- 9' for 'del-map(' + trailing ')'
9081 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9082 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9083
9084 cur_arg = 1;
9085
9086 if (!*args[cur_arg] ||
9087 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9088 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9089 file, linenum, args[0]);
9090 goto out_err;
9091 }
9092
9093 LIST_INIT(&rule->arg.map.key);
9094 proxy->conf.args.ctx = ARGC_HRQ;
9095 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9096 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9097 file, linenum);
9098 free(proxy->conf.lfs_file);
9099 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9100 proxy->conf.lfs_line = proxy->conf.args.line;
9101 cur_arg += 1;
9102 } else if (strncmp(args[0], "set-map", 7) == 0) {
9103 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
9104 rule->action = HTTP_REQ_ACT_SET_MAP;
9105 /*
9106 * '+ 8' for 'set-map('
9107 * '- 9' for 'set-map(' + trailing ')'
9108 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9109 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9110
9111 cur_arg = 1;
9112
9113 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9114 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9115 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9116 file, linenum, args[0]);
9117 goto out_err;
9118 }
9119
9120 LIST_INIT(&rule->arg.map.key);
9121 LIST_INIT(&rule->arg.map.value);
9122 proxy->conf.args.ctx = ARGC_HRQ;
9123
9124 /* key pattern */
9125 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9126 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9127 file, linenum);
9128
9129 /* value pattern */
9130 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9131 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9132 file, linenum);
9133 free(proxy->conf.lfs_file);
9134 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9135 proxy->conf.lfs_line = proxy->conf.args.line;
9136
9137 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9138 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9139 char *errmsg = NULL;
9140 cur_arg = 1;
9141 /* try in the module list */
9142 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9143 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9144 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9145 free(errmsg);
9146 goto out_err;
9147 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9148 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9149 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]9150 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9151 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9152 }
9153
9154 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9155 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9156 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9157
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9158 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9159 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9160 file, linenum, args[0], errmsg);
9161 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9162 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9163 }
9164 rule->cond = cond;
9165 }
9166 else if (*args[cur_arg]) {
9167 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9168 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9169 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9170 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9171 }
9172
9173 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9174 out_err:
9175 free(rule);
9176 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9177}
9178
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9179/* parse an "http-respose" rule */
9180struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9181{
9182 struct http_res_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9183 struct http_res_action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9184 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9185 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9186
9187 rule = calloc(1, sizeof(*rule));
9188 if (!rule) {
9189 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9190 goto out_err;
9191 }
9192
9193 if (!strcmp(args[0], "allow")) {
9194 rule->action = HTTP_RES_ACT_ALLOW;
9195 cur_arg = 1;
9196 } else if (!strcmp(args[0], "deny")) {
9197 rule->action = HTTP_RES_ACT_DENY;
9198 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9199 } else if (!strcmp(args[0], "set-nice")) {
9200 rule->action = HTTP_RES_ACT_SET_NICE;
9201 cur_arg = 1;
9202
9203 if (!*args[cur_arg] ||
9204 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9205 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9206 file, linenum, args[0]);
9207 goto out_err;
9208 }
9209 rule->arg.nice = atoi(args[cur_arg]);
9210 if (rule->arg.nice < -1024)
9211 rule->arg.nice = -1024;
9212 else if (rule->arg.nice > 1024)
9213 rule->arg.nice = 1024;
9214 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9215 } else if (!strcmp(args[0], "set-tos")) {
9216#ifdef IP_TOS
9217 char *err;
9218 rule->action = HTTP_RES_ACT_SET_TOS;
9219 cur_arg = 1;
9220
9221 if (!*args[cur_arg] ||
9222 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9223 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9224 file, linenum, args[0]);
9225 goto out_err;
9226 }
9227
9228 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9229 if (err && *err != '\0') {
9230 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9231 file, linenum, err, args[0]);
9232 goto out_err;
9233 }
9234 cur_arg++;
9235#else
9236 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9237 goto out_err;
9238#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9239 } else if (!strcmp(args[0], "set-mark")) {
9240#ifdef SO_MARK
9241 char *err;
9242 rule->action = HTTP_RES_ACT_SET_MARK;
9243 cur_arg = 1;
9244
9245 if (!*args[cur_arg] ||
9246 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9247 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9248 file, linenum, args[0]);
9249 goto out_err;
9250 }
9251
9252 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9253 if (err && *err != '\0') {
9254 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9255 file, linenum, err, args[0]);
9256 goto out_err;
9257 }
9258 cur_arg++;
9259 global.last_checks |= LSTCHK_NETADM;
9260#else
9261 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9262 goto out_err;
9263#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9264 } else if (!strcmp(args[0], "set-log-level")) {
9265 rule->action = HTTP_RES_ACT_SET_LOGL;
9266 cur_arg = 1;
9267
9268 if (!*args[cur_arg] ||
9269 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9270 bad_log_level:
9271 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9272 file, linenum, args[0]);
9273 goto out_err;
9274 }
9275 if (strcmp(args[cur_arg], "silent") == 0)
9276 rule->arg.loglevel = -1;
9277 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9278 goto bad_log_level;
9279 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9280 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9281 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
9282 cur_arg = 1;
9283
9284 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9285 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9286 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9287 file, linenum, args[0]);
9288 goto out_err;
9289 }
9290
9291 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9292 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9293 LIST_INIT(&rule->arg.hdr_add.fmt);
9294
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9295 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9296 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]9297 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9298 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9299 free(proxy->conf.lfs_file);
9300 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9301 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9302 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9303 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9304 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]9305 cur_arg = 1;
9306
9307 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmanna772b942014-08-08 17:29:06 +0200[diff] [blame]9308 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9309 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9310 file, linenum, args[0]);
9311 goto out_err;
9312 }
9313
9314 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9315 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9316 LIST_INIT(&rule->arg.hdr_add.fmt);
9317
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9318 error = NULL;
9319 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9320 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9321 args[cur_arg + 1], error);
9322 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9323 goto out_err;
9324 }
9325
9326 proxy->conf.args.ctx = ARGC_HRQ;
9327 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9328 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9329 file, linenum);
9330
9331 free(proxy->conf.lfs_file);
9332 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9333 proxy->conf.lfs_line = proxy->conf.args.line;
9334 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9335 } else if (strcmp(args[0], "del-header") == 0) {
9336 rule->action = HTTP_RES_ACT_DEL_HDR;
9337 cur_arg = 1;
9338
9339 if (!*args[cur_arg] ||
9340 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9341 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9342 file, linenum, args[0]);
9343 goto out_err;
9344 }
9345
9346 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9347 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9348
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9349 proxy->conf.args.ctx = ARGC_HRS;
9350 free(proxy->conf.lfs_file);
9351 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9352 proxy->conf.lfs_line = proxy->conf.args.line;
9353 cur_arg += 1;
9354 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9355 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9356 rule->action = HTTP_RES_ACT_ADD_ACL;
9357 /*
9358 * '+ 8' for 'add-acl('
9359 * '- 9' for 'add-acl(' + trailing ')'
9360 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9361 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9362
9363 cur_arg = 1;
9364
9365 if (!*args[cur_arg] ||
9366 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9367 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9368 file, linenum, args[0]);
9369 goto out_err;
9370 }
9371
9372 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9373 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9374 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9375 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9376 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9377 free(proxy->conf.lfs_file);
9378 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9379 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9380
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9381 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9382 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9383 /* http-response del-acl(<reference (acl name)>) <key pattern> */
9384 rule->action = HTTP_RES_ACT_DEL_ACL;
9385 /*
9386 * '+ 8' for 'del-acl('
9387 * '- 9' for 'del-acl(' + trailing ')'
9388 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9389 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9390
9391 cur_arg = 1;
9392
9393 if (!*args[cur_arg] ||
9394 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9395 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9396 file, linenum, args[0]);
9397 goto out_err;
9398 }
9399
9400 LIST_INIT(&rule->arg.map.key);
9401 proxy->conf.args.ctx = ARGC_HRS;
9402 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9403 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9404 file, linenum);
9405 free(proxy->conf.lfs_file);
9406 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9407 proxy->conf.lfs_line = proxy->conf.args.line;
9408 cur_arg += 1;
9409 } else if (strncmp(args[0], "del-map", 7) == 0) {
9410 /* http-response del-map(<reference (map name)>) <key pattern> */
9411 rule->action = HTTP_RES_ACT_DEL_MAP;
9412 /*
9413 * '+ 8' for 'del-map('
9414 * '- 9' for 'del-map(' + trailing ')'
9415 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9416 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9417
9418 cur_arg = 1;
9419
9420 if (!*args[cur_arg] ||
9421 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9422 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9423 file, linenum, args[0]);
9424 goto out_err;
9425 }
9426
9427 LIST_INIT(&rule->arg.map.key);
9428 proxy->conf.args.ctx = ARGC_HRS;
9429 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9430 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9431 file, linenum);
9432 free(proxy->conf.lfs_file);
9433 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9434 proxy->conf.lfs_line = proxy->conf.args.line;
9435 cur_arg += 1;
9436 } else if (strncmp(args[0], "set-map", 7) == 0) {
9437 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
9438 rule->action = HTTP_RES_ACT_SET_MAP;
9439 /*
9440 * '+ 8' for 'set-map('
9441 * '- 9' for 'set-map(' + trailing ')'
9442 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9443 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9444
9445 cur_arg = 1;
9446
9447 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9448 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9449 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9450 file, linenum, args[0]);
9451 goto out_err;
9452 }
9453
9454 LIST_INIT(&rule->arg.map.key);
9455 LIST_INIT(&rule->arg.map.value);
9456
9457 proxy->conf.args.ctx = ARGC_HRS;
9458
9459 /* key pattern */
9460 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9461 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9462 file, linenum);
9463
9464 /* value pattern */
9465 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9466 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9467 file, linenum);
9468
9469 free(proxy->conf.lfs_file);
9470 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9471 proxy->conf.lfs_line = proxy->conf.args.line;
9472
9473 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9474 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9475 char *errmsg = NULL;
9476 cur_arg = 1;
9477 /* try in the module list */
9478 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9479 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9480 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9481 free(errmsg);
9482 goto out_err;
9483 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9484 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9485 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]9486 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
9487 goto out_err;
9488 }
9489
9490 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9491 struct acl_cond *cond;
9492 char *errmsg = NULL;
9493
9494 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9495 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9496 file, linenum, args[0], errmsg);
9497 free(errmsg);
9498 goto out_err;
9499 }
9500 rule->cond = cond;
9501 }
9502 else if (*args[cur_arg]) {
9503 Alert("parsing [%s:%d]: 'http-response %s' expects"
9504 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9505 file, linenum, args[0], args[cur_arg]);
9506 goto out_err;
9507 }
9508
9509 return rule;
9510 out_err:
9511 free(rule);
9512 return NULL;
9513}
9514
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9515/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9516 * with <err> filled with the error message. If <use_fmt> is not null, builds a
9517 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9518 */
9519struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9520 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9521{
9522 struct redirect_rule *rule;
9523 int cur_arg;
9524 int type = REDIRECT_TYPE_NONE;
9525 int code = 302;
9526 const char *destination = NULL;
9527 const char *cookie = NULL;
9528 int cookie_set = 0;
9529 unsigned int flags = REDIRECT_FLAG_NONE;
9530 struct acl_cond *cond = NULL;
9531
9532 cur_arg = 0;
9533 while (*(args[cur_arg])) {
9534 if (strcmp(args[cur_arg], "location") == 0) {
9535 if (!*args[cur_arg + 1])
9536 goto missing_arg;
9537
9538 type = REDIRECT_TYPE_LOCATION;
9539 cur_arg++;
9540 destination = args[cur_arg];
9541 }
9542 else if (strcmp(args[cur_arg], "prefix") == 0) {
9543 if (!*args[cur_arg + 1])
9544 goto missing_arg;
9545
9546 type = REDIRECT_TYPE_PREFIX;
9547 cur_arg++;
9548 destination = args[cur_arg];
9549 }
9550 else if (strcmp(args[cur_arg], "scheme") == 0) {
9551 if (!*args[cur_arg + 1])
9552 goto missing_arg;
9553
9554 type = REDIRECT_TYPE_SCHEME;
9555 cur_arg++;
9556 destination = args[cur_arg];
9557 }
9558 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9559 if (!*args[cur_arg + 1])
9560 goto missing_arg;
9561
9562 cur_arg++;
9563 cookie = args[cur_arg];
9564 cookie_set = 1;
9565 }
9566 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9567 if (!*args[cur_arg + 1])
9568 goto missing_arg;
9569
9570 cur_arg++;
9571 cookie = args[cur_arg];
9572 cookie_set = 0;
9573 }
9574 else if (strcmp(args[cur_arg], "code") == 0) {
9575 if (!*args[cur_arg + 1])
9576 goto missing_arg;
9577
9578 cur_arg++;
9579 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9580 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9581 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9582 "'%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]9583 args[cur_arg - 1], args[cur_arg]);
9584 return NULL;
9585 }
9586 }
9587 else if (!strcmp(args[cur_arg],"drop-query")) {
9588 flags |= REDIRECT_FLAG_DROP_QS;
9589 }
9590 else if (!strcmp(args[cur_arg],"append-slash")) {
9591 flags |= REDIRECT_FLAG_APPEND_SLASH;
9592 }
9593 else if (strcmp(args[cur_arg], "if") == 0 ||
9594 strcmp(args[cur_arg], "unless") == 0) {
9595 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9596 if (!cond) {
9597 memprintf(errmsg, "error in condition: %s", *errmsg);
9598 return NULL;
9599 }
9600 break;
9601 }
9602 else {
9603 memprintf(errmsg,
9604 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9605 args[cur_arg]);
9606 return NULL;
9607 }
9608 cur_arg++;
9609 }
9610
9611 if (type == REDIRECT_TYPE_NONE) {
9612 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9613 return NULL;
9614 }
9615
9616 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
9617 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9618 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9619
9620 if (!use_fmt) {
9621 /* old-style static redirect rule */
9622 rule->rdr_str = strdup(destination);
9623 rule->rdr_len = strlen(destination);
9624 }
9625 else {
9626 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9627
9628 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
9629 * if prefix == "/", we don't want to add anything, otherwise it
9630 * makes it hard for the user to configure a self-redirection.
9631 */
Godbach543b9782014-12-18 15:44:58 +0800[diff] [blame]9632 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9633 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9634 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]9635 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9636 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9637 free(curproxy->conf.lfs_file);
9638 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
9639 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9640 }
9641 }
9642
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9643 if (cookie) {
9644 /* depending on cookie_set, either we want to set the cookie, or to clear it.
9645 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
9646 */
9647 rule->cookie_len = strlen(cookie);
9648 if (cookie_set) {
9649 rule->cookie_str = malloc(rule->cookie_len + 10);
9650 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9651 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
9652 rule->cookie_len += 9;
9653 } else {
9654 rule->cookie_str = malloc(rule->cookie_len + 21);
9655 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9656 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
9657 rule->cookie_len += 20;
9658 }
9659 }
9660 rule->type = type;
9661 rule->code = code;
9662 rule->flags = flags;
9663 LIST_INIT(&rule->list);
9664 return rule;
9665
9666 missing_arg:
9667 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9668 return NULL;
9669}
9670
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9671/************************************************************************/
9672/* The code below is dedicated to ACL parsing and matching */
9673/************************************************************************/
9674
9675
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9676/* This function ensures that the prerequisites for an L7 fetch are ready,
9677 * which means that a request or response is ready. If some data is missing,
9678 * 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]9679 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9680 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9681 *
9682 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9683 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9684 * decide whether or not an HTTP message is present ;
9685 * 0 if the requested data cannot be fetched or if it is certain that
9686 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9687 * 1 if an HTTP message is ready
9688 */
9689static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9690smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9691 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9692{
9693 struct http_txn *txn = l7;
9694 struct http_msg *msg = &txn->req;
9695
9696 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9697 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9698 */
9699
9700 if (unlikely(!s || !txn))
9701 return 0;
9702
9703 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9704 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9705
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9706 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9707 if (unlikely(!s->req))
9708 return 0;
9709
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9710 /* If the buffer does not leave enough free space at the end,
9711 * we must first realign it.
9712 */
9713 if (s->req->buf->p > s->req->buf->data &&
9714 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
9715 buffer_slow_realign(s->req->buf);
9716
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9717 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9718 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9719 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9720
9721 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9722 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9723 http_msg_analyzer(msg, &txn->hdr_idx);
9724
9725 /* Still no valid request ? */
9726 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9727 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9728 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9729 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9730 }
9731 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9732 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9733 return 0;
9734 }
9735
9736 /* OK we just got a valid HTTP request. We have some minor
9737 * preparation to perform so that further checks can rely
9738 * on HTTP tests.
9739 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9740
9741 /* If the request was parsed but was too large, we must absolutely
9742 * return an error so that it is not processed. At the moment this
9743 * cannot happen, but if the parsers are to change in the future,
9744 * we want this check to be maintained.
9745 */
9746 if (unlikely(s->req->buf->i + s->req->buf->p >
9747 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
9748 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9749 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9750 return 1;
9751 }
9752
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9753 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9754 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
9755 s->flags |= SN_REDIRECTABLE;
9756
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9757 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
9758 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9759 }
9760
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9761 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9762 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9763 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9764
9765 /* otherwise everything's ready for the request */
9766 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9767 else {
9768 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9769 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
9770 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9771 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9772 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9773 }
9774
9775 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9776 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9777 return 1;
9778}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9779
Willy Tarreaua4ba9db2014-06-25 16:56:41 +0200[diff] [blame]9780/* Note: these functinos *do* modify the sample. Even in case of success, at
9781 * least the type and uint value are modified.
9782 */
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9783#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9784 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]9785
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9786#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9787 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]9788
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9789
9790/* 1. Check on METHOD
9791 * We use the pre-parsed method if it is known, and store its number as an
9792 * integer. If it is unknown, we use the pointer and the length.
9793 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9794static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9795{
9796 int len, meth;
9797
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]9798 len = strlen(text);
9799 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9800
9801 pattern->val.i = meth;
9802 if (meth == HTTP_METH_OTHER) {
Willy Tarreau71196f32014-08-29 15:15:50 +0200[diff] [blame]9803 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9804 pattern->len = len;
9805 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9806 else {
9807 pattern->ptr.str = NULL;
9808 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9809 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9810 return 1;
9811}
9812
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9813/* This function fetches the method of current HTTP request and stores
9814 * it in the global pattern struct as a chunk. There are two possibilities :
9815 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
9816 * in <len> and <ptr> is NULL ;
9817 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
9818 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9819 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9820 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9821static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9822smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9823 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9824{
9825 int meth;
9826 struct http_txn *txn = l7;
9827
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9828 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9829
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9830 meth = txn->meth;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9831 smp->type = SMP_T_METH;
9832 smp->data.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9833 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9834 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
9835 /* ensure the indexes are not affected */
9836 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9837 smp->flags |= SMP_F_CONST;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9838 smp->data.meth.str.len = txn->req.sl.rq.m_l;
9839 smp->data.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9840 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9841 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9842 return 1;
9843}
9844
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9845/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9846static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9847{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9848 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9849 struct pattern_list *lst;
9850 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9851
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9852 list_for_each_entry(lst, &expr->patterns, list) {
9853 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9854
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9855 /* well-known method */
9856 if (pattern->val.i != HTTP_METH_OTHER) {
9857 if (smp->data.meth.meth == pattern->val.i)
9858 return pattern;
9859 else
9860 continue;
9861 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9862
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9863 /* Other method, we must compare the strings */
9864 if (pattern->len != smp->data.meth.str.len)
9865 continue;
9866
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9867 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Willy Tarreauc62a0c62014-08-28 20:42:57 +0200[diff] [blame]9868 if ((icase && strncasecmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0) ||
9869 (!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]9870 return pattern;
9871 }
9872 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9873}
9874
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9875static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9876smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9877 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9878{
9879 struct http_txn *txn = l7;
9880 char *ptr;
9881 int len;
9882
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9883 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9884
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9885 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9886 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9887
9888 while ((len-- > 0) && (*ptr++ != '/'));
9889 if (len <= 0)
9890 return 0;
9891
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9892 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9893 smp->data.str.str = ptr;
9894 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9895
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9896 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9897 return 1;
9898}
9899
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9900static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9901smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9902 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9903{
9904 struct http_txn *txn = l7;
9905 char *ptr;
9906 int len;
9907
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9908 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9909
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9910 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9911 return 0;
9912
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9913 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9914 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9915
9916 while ((len-- > 0) && (*ptr++ != '/'));
9917 if (len <= 0)
9918 return 0;
9919
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9920 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9921 smp->data.str.str = ptr;
9922 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9923
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9924 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9925 return 1;
9926}
9927
9928/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9929static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9930smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9931 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9932{
9933 struct http_txn *txn = l7;
9934 char *ptr;
9935 int len;
9936
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9937 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9938
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9939 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9940 return 0;
9941
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9942 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9943 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9944
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9945 smp->type = SMP_T_UINT;
9946 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9947 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9948 return 1;
9949}
9950
9951/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9952static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9953smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9954 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9955{
9956 struct http_txn *txn = l7;
9957
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9958 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9959
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9960 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9961 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9962 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9963 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9964 return 1;
9965}
9966
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9967static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9968smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9969 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9970{
9971 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9972 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9973
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9974 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9975
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]9976 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]9977 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]9978 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9979
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9980 smp->type = SMP_T_IPV4;
9981 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9982 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9983 return 1;
9984}
9985
9986static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9987smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9988 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9989{
9990 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9991 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9992
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9993 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9994
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]9995 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]9996 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
9997 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9998
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9999 smp->type = SMP_T_UINT;
10000 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10001 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10002 return 1;
10003}
10004
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10005/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10006 * Accepts an optional argument of type string containing the header field name,
10007 * and an optional argument of type signed or unsigned integer to request an
10008 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10009 * headers are considered from the first one. It does not stop on commas and
10010 * returns full lines instead (useful for User-Agent or Date for example).
10011 */
10012static int
10013smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10014 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10015{
10016 struct http_txn *txn = l7;
10017 struct hdr_idx *idx = &txn->hdr_idx;
10018 struct hdr_ctx *ctx = smp->ctx.a[0];
10019 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
10020 int occ = 0;
10021 const char *name_str = NULL;
10022 int name_len = 0;
10023
10024 if (!ctx) {
10025 /* first call */
10026 ctx = &static_hdr_ctx;
10027 ctx->idx = 0;
10028 smp->ctx.a[0] = ctx;
10029 }
10030
10031 if (args) {
10032 if (args[0].type != ARGT_STR)
10033 return 0;
10034 name_str = args[0].data.str.str;
10035 name_len = args[0].data.str.len;
10036
10037 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10038 occ = args[1].data.uint;
10039 }
10040
10041 CHECK_HTTP_MESSAGE_FIRST();
10042
10043 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10044 /* search for header from the beginning */
10045 ctx->idx = 0;
10046
10047 if (!occ && !(opt & SMP_OPT_ITERATE))
10048 /* no explicit occurrence and single fetch => last header by default */
10049 occ = -1;
10050
10051 if (!occ)
10052 /* prepare to report multiple occurrences for ACL fetches */
10053 smp->flags |= SMP_F_NOT_LAST;
10054
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10055 smp->type = SMP_T_STR;
10056 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10057 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
10058 return 1;
10059
10060 smp->flags &= ~SMP_F_NOT_LAST;
10061 return 0;
10062}
10063
10064/* 6. Check on HTTP header count. The number of occurrences is returned.
10065 * Accepts exactly 1 argument of type string. It does not stop on commas and
10066 * returns full lines instead (useful for User-Agent or Date for example).
10067 */
10068static int
10069smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10070 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10071{
10072 struct http_txn *txn = l7;
10073 struct hdr_idx *idx = &txn->hdr_idx;
10074 struct hdr_ctx ctx;
10075 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
10076 int cnt;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10077 const char *name = NULL;
10078 int len = 0;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10079
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10080 if (args && args->type == ARGT_STR) {
10081 name = args->data.str.str;
10082 len = args->data.str.len;
10083 }
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10084
10085 CHECK_HTTP_MESSAGE_FIRST();
10086
10087 ctx.idx = 0;
10088 cnt = 0;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10089 while (http_find_full_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10090 cnt++;
10091
10092 smp->type = SMP_T_UINT;
10093 smp->data.uint = cnt;
10094 smp->flags = SMP_F_VOL_HDR;
10095 return 1;
10096}
10097
10098/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10099 * Accepts an optional argument of type string containing the header field name,
10100 * and an optional argument of type signed or unsigned integer to request an
10101 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10102 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10103 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10104static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10105smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10106 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10107{
10108 struct http_txn *txn = l7;
10109 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10110 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10111 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]10112 int occ = 0;
10113 const char *name_str = NULL;
10114 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10115
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10116 if (!ctx) {
10117 /* first call */
10118 ctx = &static_hdr_ctx;
10119 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10120 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10121 }
10122
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10123 if (args) {
10124 if (args[0].type != ARGT_STR)
10125 return 0;
10126 name_str = args[0].data.str.str;
10127 name_len = args[0].data.str.len;
10128
10129 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10130 occ = args[1].data.uint;
10131 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10132
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10133 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10134
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10135 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10136 /* search for header from the beginning */
10137 ctx->idx = 0;
10138
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10139 if (!occ && !(opt & SMP_OPT_ITERATE))
10140 /* no explicit occurrence and single fetch => last header by default */
10141 occ = -1;
10142
10143 if (!occ)
10144 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10145 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10146
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10147 smp->type = SMP_T_STR;
10148 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10149 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]10150 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10151
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10152 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10153 return 0;
10154}
10155
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10156/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10157 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10158 */
10159static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10160smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10161 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10162{
10163 struct http_txn *txn = l7;
10164 struct hdr_idx *idx = &txn->hdr_idx;
10165 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10166 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]10167 int cnt;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10168 const char *name = NULL;
10169 int len = 0;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10170
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10171 if (args && args->type == ARGT_STR) {
10172 name = args->data.str.str;
10173 len = args->data.str.len;
10174 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10175
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10176 CHECK_HTTP_MESSAGE_FIRST();
10177
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10178 ctx.idx = 0;
10179 cnt = 0;
Willy Tarreau29437342015-04-01 19:16:09 +0200[diff] [blame]10180 while (http_find_header2(name, len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10181 cnt++;
10182
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10183 smp->type = SMP_T_UINT;
10184 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10185 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10186 return 1;
10187}
10188
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10189/* Fetch an HTTP header's integer value. The integer value is returned. It
10190 * takes a mandatory argument of type string and an optional one of type int
10191 * to designate a specific occurrence. It returns an unsigned integer, which
10192 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10193 */
10194static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10195smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10196 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10197{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10198 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10199
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10200 if (ret > 0) {
10201 smp->type = SMP_T_UINT;
10202 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10203 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10204
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10205 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10206}
10207
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10208/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10209 * and an optional one of type int to designate a specific occurrence.
10210 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10211 */
10212static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10213smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10214 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10215{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10216 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10217
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10218 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10219 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
10220 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10221 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10222 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10223 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10224 if (smp->data.str.len < temp->size - 1) {
10225 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
10226 temp->str[smp->data.str.len] = '\0';
10227 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
10228 smp->type = SMP_T_IPV6;
10229 break;
10230 }
10231 }
10232 }
10233
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10234 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10235 if (!(smp->flags & SMP_F_NOT_LAST))
10236 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10237 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10238 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10239}
10240
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10241/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10242 * the first '/' after the possible hostname, and ends before the possible '?'.
10243 */
10244static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10245smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10246 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10247{
10248 struct http_txn *txn = l7;
10249 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10250
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10251 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10252
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10253 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]10254 ptr = http_get_path(txn);
10255 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10256 return 0;
10257
10258 /* OK, we got the '/' ! */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10259 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10260 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10261
10262 while (ptr < end && *ptr != '?')
10263 ptr++;
10264
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10265 smp->data.str.len = ptr - smp->data.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10266 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10267 return 1;
10268}
10269
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10270/* This produces a concatenation of the first occurrence of the Host header
10271 * followed by the path component if it begins with a slash ('/'). This means
10272 * that '*' will not be added, resulting in exactly the first Host entry.
10273 * If no Host header is found, then the path is returned as-is. The returned
10274 * 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]10275 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10276 */
10277static int
10278smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10279 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10280{
10281 struct http_txn *txn = l7;
10282 char *ptr, *end, *beg;
10283 struct hdr_ctx ctx;
Willy Tarreauc1fbbd42014-06-24 17:27:02 +0200[diff] [blame]10284 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10285
10286 CHECK_HTTP_MESSAGE_FIRST();
10287
10288 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10289 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]10290 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10291
10292 /* 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]10293 temp = get_trash_chunk();
10294 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10295 smp->type = SMP_T_STR;
Willy Tarreauc1fbbd42014-06-24 17:27:02 +0200[diff] [blame]10296 smp->data.str.str = temp->str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10297 smp->data.str.len = ctx.vlen;
10298
10299 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10300 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]10301 beg = http_get_path(txn);
10302 if (!beg)
10303 beg = end;
10304
10305 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10306
10307 if (beg < ptr && *beg == '/') {
10308 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
10309 smp->data.str.len += ptr - beg;
10310 }
10311
10312 smp->flags = SMP_F_VOL_1ST;
10313 return 1;
10314}
10315
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10316/* This produces a 32-bit hash of the concatenation of the first occurrence of
10317 * the Host header followed by the path component if it begins with a slash ('/').
10318 * This means that '*' will not be added, resulting in exactly the first Host
10319 * 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]10320 * is hashed using the path hash followed by a full avalanche hash and provides a
10321 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10322 * high-traffic sites without having to store whole paths.
10323 */
10324static int
10325smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10326 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10327{
10328 struct http_txn *txn = l7;
10329 struct hdr_ctx ctx;
10330 unsigned int hash = 0;
10331 char *ptr, *beg, *end;
10332 int len;
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)) {
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10338 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10339 ptr = ctx.line + ctx.val;
10340 len = ctx.vlen;
10341 while (len--)
10342 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10343 }
10344
10345 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10346 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]10347 beg = http_get_path(txn);
10348 if (!beg)
10349 beg = end;
10350
10351 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10352
10353 if (beg < ptr && *beg == '/') {
10354 while (beg < ptr)
10355 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10356 }
10357 hash = full_hash(hash);
10358
10359 smp->type = SMP_T_UINT;
10360 smp->data.uint = hash;
10361 smp->flags = SMP_F_VOL_1ST;
10362 return 1;
10363}
10364
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10365/* 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]10366 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10367 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10368 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10369 * that in environments where IPv6 is insignificant, truncating the output to
10370 * 8 bytes would still work.
10371 */
10372static int
10373smp_fetch_base32_src(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 Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10375{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10376 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10377 struct connection *cli_conn = objt_conn(l4->si[0].end);
10378
10379 if (!cli_conn)
10380 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10381
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10382 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10383 return 0;
10384
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10385 temp = get_trash_chunk();
Willy Tarreau0dff81c2014-07-15 21:34:06 +0200[diff] [blame]10386 *(unsigned int *)temp->str = htonl(smp->data.uint);
10387 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10388
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10389 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10390 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10391 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]10392 temp->len += 4;
10393 break;
10394 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10395 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]10396 temp->len += 16;
10397 break;
10398 default:
10399 return 0;
10400 }
10401
10402 smp->data.str = *temp;
10403 smp->type = SMP_T_BIN;
10404 return 1;
10405}
10406
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10407static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10408smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10409 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10410{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10411 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10412 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10413 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10414
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10415 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10416
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10417 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10418 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10419 return 1;
10420}
10421
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10422/* return a valid test if the current request is the first one on the connection */
10423static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10424smp_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]10425 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10426{
10427 if (!s)
10428 return 0;
10429
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10430 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10431 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10432 return 1;
10433}
10434
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10435/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10436static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10437smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10438 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10439{
10440
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10441 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10442 return 0;
10443
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10444 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10445
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10446 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10447 return 0;
10448
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10449 smp->type = SMP_T_BOOL;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10450 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]10451 return 1;
10452}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10453
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10454/* Accepts exactly 1 argument of type userlist */
10455static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10456smp_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]10457 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10458{
10459
10460 if (!args || args->type != ARGT_USR)
10461 return 0;
10462
10463 CHECK_HTTP_MESSAGE_FIRST();
10464
10465 if (!get_http_auth(l4))
10466 return 0;
10467
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10468 /* if the user does not belong to the userlist or has a wrong password,
10469 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10470 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10471 */
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10472 if (!check_user(args->data.usr, l4->txn.auth.user, l4->txn.auth.pass))
10473 return 0;
10474
10475 /* pat_match_auth() will need the user list */
10476 smp->ctx.a[0] = args->data.usr;
10477
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10478 smp->type = SMP_T_STR;
10479 smp->flags = SMP_F_CONST;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10480 smp->data.str.str = l4->txn.auth.user;
10481 smp->data.str.len = strlen(l4->txn.auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10482
10483 return 1;
10484}
10485
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10486/* Try to find the next occurrence of a cookie name in a cookie header value.
10487 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10488 * the cookie value is returned into *value and *value_l, and the function
10489 * returns a pointer to the next pointer to search from if the value was found.
10490 * Otherwise if the cookie was not found, NULL is returned and neither value
10491 * nor value_l are touched. The input <hdr> string should first point to the
10492 * header's value, and the <hdr_end> pointer must point to the first character
10493 * not part of the value. <list> must be non-zero if value may represent a list
10494 * of values (cookie headers). This makes it faster to abort parsing when no
10495 * list is expected.
10496 */
10497static char *
10498extract_cookie_value(char *hdr, const char *hdr_end,
10499 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10500 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10501{
10502 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10503 char *next;
10504
10505 /* we search at least a cookie name followed by an equal, and more
10506 * generally something like this :
10507 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
10508 */
10509 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
10510 /* Iterate through all cookies on this line */
10511
10512 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
10513 att_beg++;
10514
10515 /* find att_end : this is the first character after the last non
10516 * space before the equal. It may be equal to hdr_end.
10517 */
10518 equal = att_end = att_beg;
10519
10520 while (equal < hdr_end) {
10521 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
10522 break;
10523 if (http_is_spht[(unsigned char)*equal++])
10524 continue;
10525 att_end = equal;
10526 }
10527
10528 /* here, <equal> points to '=', a delimitor or the end. <att_end>
10529 * is between <att_beg> and <equal>, both may be identical.
10530 */
10531
10532 /* look for end of cookie if there is an equal sign */
10533 if (equal < hdr_end && *equal == '=') {
10534 /* look for the beginning of the value */
10535 val_beg = equal + 1;
10536 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
10537 val_beg++;
10538
10539 /* find the end of the value, respecting quotes */
10540 next = find_cookie_value_end(val_beg, hdr_end);
10541
10542 /* make val_end point to the first white space or delimitor after the value */
10543 val_end = next;
10544 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
10545 val_end--;
10546 } else {
10547 val_beg = val_end = next = equal;
10548 }
10549
10550 /* We have nothing to do with attributes beginning with '$'. However,
10551 * they will automatically be removed if a header before them is removed,
10552 * since they're supposed to be linked together.
10553 */
10554 if (*att_beg == '$')
10555 continue;
10556
10557 /* Ignore cookies with no equal sign */
10558 if (equal == next)
10559 continue;
10560
10561 /* Now we have the cookie name between att_beg and att_end, and
10562 * its value between val_beg and val_end.
10563 */
10564
10565 if (att_end - att_beg == cookie_name_l &&
10566 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
10567 /* let's return this value and indicate where to go on from */
10568 *value = val_beg;
10569 *value_l = val_end - val_beg;
10570 return next + 1;
10571 }
10572
10573 /* Set-Cookie headers only have the name in the first attr=value part */
10574 if (!list)
10575 break;
10576 }
10577
10578 return NULL;
10579}
10580
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10581/* Fetch a captured HTTP request header. The index is the position of
10582 * the "capture" option in the configuration file
10583 */
10584static int
10585smp_fetch_capture_header_req(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10586 const struct arg *args, struct sample *smp, const char *kw)
10587{
10588 struct proxy *fe = l4->fe;
10589 struct http_txn *txn = l7;
10590 int idx;
10591
10592 if (!args || args->type != ARGT_UINT)
10593 return 0;
10594
10595 idx = args->data.uint;
10596
10597 if (idx > (fe->nb_req_cap - 1) || txn->req.cap == NULL || txn->req.cap[idx] == NULL)
10598 return 0;
10599
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10600 smp->type = SMP_T_STR;
10601 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10602 smp->data.str.str = txn->req.cap[idx];
10603 smp->data.str.len = strlen(txn->req.cap[idx]);
10604
10605 return 1;
10606}
10607
10608/* Fetch a captured HTTP response header. The index is the position of
10609 * the "capture" option in the configuration file
10610 */
10611static int
10612smp_fetch_capture_header_res(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10613 const struct arg *args, struct sample *smp, const char *kw)
10614{
10615 struct proxy *fe = l4->fe;
10616 struct http_txn *txn = l7;
10617 int idx;
10618
10619 if (!args || args->type != ARGT_UINT)
10620 return 0;
10621
10622 idx = args->data.uint;
10623
10624 if (idx > (fe->nb_rsp_cap - 1) || txn->rsp.cap == NULL || txn->rsp.cap[idx] == NULL)
10625 return 0;
10626
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10627 smp->type = SMP_T_STR;
10628 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10629 smp->data.str.str = txn->rsp.cap[idx];
10630 smp->data.str.len = strlen(txn->rsp.cap[idx]);
10631
10632 return 1;
10633}
10634
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10635/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
10636static int
10637smp_fetch_capture_req_method(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10638 const struct arg *args, struct sample *smp, const char *kw)
10639{
10640 struct chunk *temp;
10641 struct http_txn *txn = l7;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10642 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10643
10644 if (!txn->uri)
10645 return 0;
10646
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10647 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10648
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10649 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10650 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10651
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10652 temp = get_trash_chunk();
10653 temp->str = txn->uri;
10654 temp->len = ptr - txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10655 smp->data.str = *temp;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10656 smp->type = SMP_T_STR;
10657 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10658
10659 return 1;
10660
10661}
10662
10663/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
10664static int
10665smp_fetch_capture_req_uri(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10666 const struct arg *args, struct sample *smp, const char *kw)
10667{
10668 struct chunk *temp;
10669 struct http_txn *txn = l7;
10670 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10671
10672 if (!txn->uri)
10673 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10674
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10675 ptr = txn->uri;
10676
10677 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10678 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10679
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10680 if (!*ptr)
10681 return 0;
10682
10683 ptr++; /* skip the space */
10684
10685 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10686 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10687 if (!ptr)
10688 return 0;
10689 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
10690 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10691
10692 smp->data.str = *temp;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10693 smp->data.str.len = ptr - temp->str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10694 smp->type = SMP_T_STR;
10695 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10696
10697 return 1;
10698}
10699
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10700/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
10701 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10702 */
10703static int
10704smp_fetch_capture_req_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10705 const struct arg *args, struct sample *smp, const char *kw)
10706{
10707 struct http_txn *txn = l7;
10708
10709 if (txn->req.msg_state < HTTP_MSG_HDR_FIRST)
10710 return 0;
10711
10712 if (txn->req.flags & HTTP_MSGF_VER_11)
10713 smp->data.str.str = "HTTP/1.1";
10714 else
10715 smp->data.str.str = "HTTP/1.0";
10716
10717 smp->data.str.len = 8;
10718 smp->type = SMP_T_STR;
10719 smp->flags = SMP_F_CONST;
10720 return 1;
10721
10722}
10723
10724/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
10725 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10726 */
10727static int
10728smp_fetch_capture_res_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10729 const struct arg *args, struct sample *smp, const char *kw)
10730{
10731 struct http_txn *txn = l7;
10732
10733 if (txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
10734 return 0;
10735
10736 if (txn->rsp.flags & HTTP_MSGF_VER_11)
10737 smp->data.str.str = "HTTP/1.1";
10738 else
10739 smp->data.str.str = "HTTP/1.0";
10740
10741 smp->data.str.len = 8;
10742 smp->type = SMP_T_STR;
10743 smp->flags = SMP_F_CONST;
10744 return 1;
10745
10746}
10747
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10748
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10749/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10750 * 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]10751 * 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]10752 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10753 * 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]10754 * Accepts exactly 1 argument of type string. If the input options indicate
10755 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10756 * The returned sample is of type CSTR. Can be used to parse cookies in other
10757 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10758 */
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10759int smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10760 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10761{
10762 struct http_txn *txn = l7;
10763 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10764 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10765 const struct http_msg *msg;
10766 const char *hdr_name;
10767 int hdr_name_len;
10768 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10769 int occ = 0;
10770 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10771
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10772 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10773 return 0;
10774
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10775 if (!ctx) {
10776 /* first call */
10777 ctx = &static_hdr_ctx;
10778 ctx->idx = 0;
10779 smp->ctx.a[2] = ctx;
10780 }
10781
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10782 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10783
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10784 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10785 msg = &txn->req;
10786 hdr_name = "Cookie";
10787 hdr_name_len = 6;
10788 } else {
10789 msg = &txn->rsp;
10790 hdr_name = "Set-Cookie";
10791 hdr_name_len = 10;
10792 }
10793
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10794 if (!occ && !(opt & SMP_OPT_ITERATE))
10795 /* no explicit occurrence and single fetch => last cookie by default */
10796 occ = -1;
10797
10798 /* OK so basically here, either we want only one value and it's the
10799 * last one, or we want to iterate over all of them and we fetch the
10800 * next one.
10801 */
10802
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10803 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10804 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10805 /* search for the header from the beginning, we must first initialize
10806 * the search parameters.
10807 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10808 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10809 ctx->idx = 0;
10810 }
10811
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10812 smp->flags |= SMP_F_VOL_HDR;
10813
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10814 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10815 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
10816 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10817 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
10818 goto out;
10819
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10820 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10821 continue;
10822
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10823 smp->ctx.a[0] = ctx->line + ctx->val;
10824 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10825 }
10826
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10827 smp->type = SMP_T_STR;
10828 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10829 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]10830 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10831 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10832 &smp->data.str.str,
10833 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10834 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10835 found = 1;
10836 if (occ >= 0) {
10837 /* one value was returned into smp->data.str.{str,len} */
10838 smp->flags |= SMP_F_NOT_LAST;
10839 return 1;
10840 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10841 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10842 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10843 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10844 /* all cookie headers and values were scanned. If we're looking for the
10845 * last occurrence, we may return it now.
10846 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10847 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10848 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10849 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10850}
10851
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10852/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10853 * 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]10854 * multiple cookies may be parsed on the same line. The returned sample is of
10855 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10856 */
10857static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10858smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10859 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10860{
10861 struct http_txn *txn = l7;
10862 struct hdr_idx *idx = &txn->hdr_idx;
10863 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10864 const struct http_msg *msg;
10865 const char *hdr_name;
10866 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10867 int cnt;
10868 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10869 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10870
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10871 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10872 return 0;
10873
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10874 CHECK_HTTP_MESSAGE_FIRST();
10875
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10876 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10877 msg = &txn->req;
10878 hdr_name = "Cookie";
10879 hdr_name_len = 6;
10880 } else {
10881 msg = &txn->rsp;
10882 hdr_name = "Set-Cookie";
10883 hdr_name_len = 10;
10884 }
10885
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10886 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]10887 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10888 ctx.idx = 0;
10889 cnt = 0;
10890
10891 while (1) {
10892 /* Note: val_beg == NULL every time we need to fetch a new header */
10893 if (!val_beg) {
10894 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
10895 break;
10896
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10897 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10898 continue;
10899
10900 val_beg = ctx.line + ctx.val;
10901 val_end = val_beg + ctx.vlen;
10902 }
10903
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10904 smp->type = SMP_T_STR;
10905 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10906 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10907 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10908 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10909 &smp->data.str.str,
10910 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10911 cnt++;
10912 }
10913 }
10914
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]10915 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10916 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10917 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10918 return 1;
10919}
10920
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10921/* Fetch an cookie's integer value. The integer value is returned. It
10922 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
10923 */
10924static int
10925smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10926 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10927{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10928 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10929
10930 if (ret > 0) {
10931 smp->type = SMP_T_UINT;
10932 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10933 }
10934
10935 return ret;
10936}
10937
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10938/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10939/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10940/************************************************************************/
10941
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10942/*
10943 * Given a path string and its length, find the position of beginning of the
10944 * query string. Returns NULL if no query string is found in the path.
10945 *
10946 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
10947 *
10948 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
10949 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10950static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10951{
10952 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]10953
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10954 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10955 return p ? p + 1 : NULL;
10956}
10957
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10958static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10959{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10960 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10961}
10962
10963/*
10964 * Given a url parameter, find the starting position of the first occurence,
10965 * or NULL if the parameter is not found.
10966 *
10967 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
10968 * the function will return query_string+8.
10969 */
10970static char*
10971find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10972 char* url_param_name, size_t url_param_name_l,
10973 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10974{
10975 char *pos, *last;
10976
10977 pos = query_string;
10978 last = query_string + query_string_l - url_param_name_l - 1;
10979
10980 while (pos <= last) {
10981 if (pos[url_param_name_l] == '=') {
10982 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
10983 return pos;
10984 pos += url_param_name_l + 1;
10985 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10986 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10987 pos++;
10988 pos++;
10989 }
10990 return NULL;
10991}
10992
10993/*
10994 * Given a url parameter name, returns its value and size into *value and
10995 * *value_l respectively, and returns non-zero. If the parameter is not found,
10996 * zero is returned and value/value_l are not touched.
10997 */
10998static int
10999find_url_param_value(char* path, size_t path_l,
11000 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11001 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11002{
11003 char *query_string, *qs_end;
11004 char *arg_start;
11005 char *value_start, *value_end;
11006
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11007 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11008 if (!query_string)
11009 return 0;
11010
11011 qs_end = path + path_l;
11012 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11013 url_param_name, url_param_name_l,
11014 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11015 if (!arg_start)
11016 return 0;
11017
11018 value_start = arg_start + url_param_name_l + 1;
11019 value_end = value_start;
11020
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11021 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11022 value_end++;
11023
11024 *value = value_start;
11025 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]11026 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11027}
11028
11029static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11030smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11031 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11032{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11033 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11034 struct http_txn *txn = l7;
11035 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11036
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11037 if (!args || args[0].type != ARGT_STR ||
11038 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11039 return 0;
11040
11041 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11042
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11043 if (args[1].type)
11044 delim = *args[1].data.str.str;
11045
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11046 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]11047 args->data.str.str, args->data.str.len,
11048 &smp->data.str.str, &smp->data.str.len,
11049 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11050 return 0;
11051
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11052 smp->type = SMP_T_STR;
11053 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11054 return 1;
11055}
11056
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11057/* Return the signed integer value for the specified url parameter (see url_param
11058 * above).
11059 */
11060static int
11061smp_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]11062 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11063{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11064 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11065
11066 if (ret > 0) {
11067 smp->type = SMP_T_UINT;
11068 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11069 }
11070
11071 return ret;
11072}
11073
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11074/* This produces a 32-bit hash of the concatenation of the first occurrence of
11075 * the Host header followed by the path component if it begins with a slash ('/').
11076 * This means that '*' will not be added, resulting in exactly the first Host
11077 * entry. If no Host header is found, then the path is used. The resulting value
11078 * is hashed using the url hash followed by a full avalanche hash and provides a
11079 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11080 * high-traffic sites without having to store whole paths.
11081 * this differs from the base32 functions in that it includes the url parameters
11082 * as well as the path
11083 */
11084static int
11085smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11086 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11087{
11088 struct http_txn *txn = l7;
11089 struct hdr_ctx ctx;
11090 unsigned int hash = 0;
11091 char *ptr, *beg, *end;
11092 int len;
11093
11094 CHECK_HTTP_MESSAGE_FIRST();
11095
11096 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11097 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]11098 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11099 ptr = ctx.line + ctx.val;
11100 len = ctx.vlen;
11101 while (len--)
11102 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11103 }
11104
11105 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11106 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]11107 beg = http_get_path(txn);
11108 if (!beg)
11109 beg = end;
11110
11111 for (ptr = beg; ptr < end ; ptr++);
11112
11113 if (beg < ptr && *beg == '/') {
11114 while (beg < ptr)
11115 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11116 }
11117 hash = full_hash(hash);
11118
11119 smp->type = SMP_T_UINT;
11120 smp->data.uint = hash;
11121 smp->flags = SMP_F_VOL_1ST;
11122 return 1;
11123}
11124
11125/* This concatenates the source address with the 32-bit hash of the Host and
11126 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11127 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11128 * on the source address length. The URL hash is stored before the address so
11129 * that in environments where IPv6 is insignificant, truncating the output to
11130 * 8 bytes would still work.
11131 */
11132static int
11133smp_fetch_url32_src(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 chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11137 struct connection *cli_conn = objt_conn(l4->si[0].end);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11138
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11139 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11140 return 0;
11141
11142 temp = get_trash_chunk();
11143 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
11144 temp->len += sizeof(smp->data.uint);
11145
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11146 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11147 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11148 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]11149 temp->len += 4;
11150 break;
11151 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11152 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]11153 temp->len += 16;
11154 break;
11155 default:
11156 return 0;
11157 }
11158
11159 smp->data.str = *temp;
11160 smp->type = SMP_T_BIN;
11161 return 1;
11162}
11163
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11164/* This function is used to validate the arguments passed to any "hdr" fetch
11165 * keyword. These keywords support an optional positive or negative occurrence
11166 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11167 * is assumed that the types are already the correct ones. Returns 0 on error,
11168 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11169 * error message in case of error, that the caller is responsible for freeing.
11170 * The initial location must either be freeable or NULL.
11171 */
11172static int val_hdr(struct arg *arg, char **err_msg)
11173{
11174 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11175 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11176 return 0;
11177 }
11178 return 1;
11179}
11180
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11181/* takes an UINT value on input supposed to represent the time since EPOCH,
11182 * adds an optional offset found in args[0] and emits a string representing
11183 * the date in RFC-1123/5322 format.
11184 */
11185static int sample_conv_http_date(const struct arg *args, struct sample *smp)
11186{
11187 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
11188 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11189 struct chunk *temp;
11190 struct tm *tm;
11191 time_t curr_date = smp->data.uint;
11192
11193 /* add offset */
11194 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
11195 curr_date += args[0].data.sint;
11196
11197 tm = gmtime(&curr_date);
11198
11199 temp = get_trash_chunk();
11200 temp->len = snprintf(temp->str, temp->size - temp->len,
11201 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11202 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11203 tm->tm_hour, tm->tm_min, tm->tm_sec);
11204
11205 smp->data.str = *temp;
11206 smp->type = SMP_T_STR;
11207 return 1;
11208}
11209
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11210/* Match language range with language tag. RFC2616 14.4:
11211 *
11212 * A language-range matches a language-tag if it exactly equals
11213 * the tag, or if it exactly equals a prefix of the tag such
11214 * that the first tag character following the prefix is "-".
11215 *
11216 * Return 1 if the strings match, else return 0.
11217 */
11218static inline int language_range_match(const char *range, int range_len,
11219 const char *tag, int tag_len)
11220{
11221 const char *end = range + range_len;
11222 const char *tend = tag + tag_len;
11223 while (range < end) {
11224 if (*range == '-' && tag == tend)
11225 return 1;
11226 if (*range != *tag || tag == tend)
11227 return 0;
11228 range++;
11229 tag++;
11230 }
11231 /* Return true only if the last char of the tag is matched. */
11232 return tag == tend;
11233}
11234
11235/* Arguments: The list of expected value, the number of parts returned and the separator */
11236static int sample_conv_q_prefered(const struct arg *args, struct sample *smp)
11237{
11238 const char *al = smp->data.str.str;
11239 const char *end = al + smp->data.str.len;
11240 const char *token;
11241 int toklen;
11242 int qvalue;
11243 const char *str;
11244 const char *w;
11245 int best_q = 0;
11246
11247 /* Set the constant to the sample, because the output of the
11248 * function will be peek in the constant configuration string.
11249 */
11250 smp->flags |= SMP_F_CONST;
11251 smp->data.str.size = 0;
11252 smp->data.str.str = "";
11253 smp->data.str.len = 0;
11254
11255 /* Parse the accept language */
11256 while (1) {
11257
11258 /* Jump spaces, quit if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11259 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11260 al++;
11261 if (al >= end)
11262 break;
11263
11264 /* Start of the fisrt word. */
11265 token = al;
11266
11267 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11268 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11269 al++;
11270 if (al == token)
11271 goto expect_comma;
11272
11273 /* Length of the token. */
11274 toklen = al - token;
11275 qvalue = 1000;
11276
11277 /* Check if the token exists in the list. If the token not exists,
11278 * jump to the next token.
11279 */
11280 str = args[0].data.str.str;
11281 w = str;
11282 while (1) {
11283 if (*str == ';' || *str == '\0') {
11284 if (language_range_match(token, toklen, w, str-w))
11285 goto look_for_q;
11286 if (*str == '\0')
11287 goto expect_comma;
11288 w = str + 1;
11289 }
11290 str++;
11291 }
11292 goto expect_comma;
11293
11294look_for_q:
11295
11296 /* Jump spaces, quit if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11297 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11298 al++;
11299 if (al >= end)
11300 goto process_value;
11301
11302 /* If ',' is found, process the result */
11303 if (*al == ',')
11304 goto process_value;
11305
11306 /* If the character is different from ';', look
11307 * for the end of the header part in best effort.
11308 */
11309 if (*al != ';')
11310 goto expect_comma;
11311
11312 /* Assumes that the char is ';', now expect "q=". */
11313 al++;
11314
11315 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11316 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11317 al++;
11318 if (al >= end)
11319 goto process_value;
11320
11321 /* Expect 'q'. If no 'q', continue in best effort */
11322 if (*al != 'q')
11323 goto process_value;
11324 al++;
11325
11326 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11327 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11328 al++;
11329 if (al >= end)
11330 goto process_value;
11331
11332 /* Expect '='. If no '=', continue in best effort */
11333 if (*al != '=')
11334 goto process_value;
11335 al++;
11336
11337 /* Jump spaces, process value if the end is detected. */
Willy Tarreau463ae6f2014-07-08 00:59:48 +0200[diff] [blame]11338 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11339 al++;
11340 if (al >= end)
11341 goto process_value;
11342
11343 /* Parse the q value. */
11344 qvalue = parse_qvalue(al, &al);
11345
11346process_value:
11347
11348 /* If the new q value is the best q value, then store the associated
11349 * language in the response. If qvalue is the biggest value (1000),
11350 * break the process.
11351 */
11352 if (qvalue > best_q) {
11353 smp->data.str.str = (char *)w;
11354 smp->data.str.len = str - w;
11355 if (qvalue >= 1000)
11356 break;
11357 best_q = qvalue;
11358 }
11359
11360expect_comma:
11361
11362 /* Expect comma or end. If the end is detected, quit the loop. */
11363 while (al < end && *al != ',')
11364 al++;
11365 if (al >= end)
11366 break;
11367
11368 /* Comma is found, jump it and restart the analyzer. */
11369 al++;
11370 }
11371
11372 /* Set default value if required. */
11373 if (smp->data.str.len == 0 && args[1].type == ARGT_STR) {
11374 smp->data.str.str = args[1].data.str.str;
11375 smp->data.str.len = args[1].data.str.len;
11376 }
11377
11378 /* Return true only if a matching language was found. */
11379 return smp->data.str.len != 0;
11380}
11381
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]11382/*
11383 * Return the struct http_req_action_kw associated to a keyword.
11384 */
11385struct http_req_action_kw *action_http_req_custom(const char *kw)
11386{
11387 if (!LIST_ISEMPTY(&http_req_keywords.list)) {
11388 struct http_req_action_kw_list *kw_list;
11389 int i;
11390
11391 list_for_each_entry(kw_list, &http_req_keywords.list, list) {
11392 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
11393 if (!strcmp(kw, kw_list->kw[i].kw))
11394 return &kw_list->kw[i];
11395 }
11396 }
11397 }
11398 return NULL;
11399}
11400
11401/*
11402 * Return the struct http_res_action_kw associated to a keyword.
11403 */
11404struct http_res_action_kw *action_http_res_custom(const char *kw)
11405{
11406 if (!LIST_ISEMPTY(&http_res_keywords.list)) {
11407 struct http_res_action_kw_list *kw_list;
11408 int i;
11409
11410 list_for_each_entry(kw_list, &http_res_keywords.list, list) {
11411 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
11412 if (!strcmp(kw, kw_list->kw[i].kw))
11413 return &kw_list->kw[i];
11414 }
11415 }
11416 }
11417 return NULL;
11418}
11419
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11420/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11421/* All supported ACL keywords must be declared here. */
11422/************************************************************************/
11423
11424/* Note: must not be declared <const> as its list will be overwritten.
11425 * Please take care of keeping this list alphabetically sorted.
11426 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]11427static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11428 { "base", "base", PAT_MATCH_STR },
11429 { "base_beg", "base", PAT_MATCH_BEG },
11430 { "base_dir", "base", PAT_MATCH_DIR },
11431 { "base_dom", "base", PAT_MATCH_DOM },
11432 { "base_end", "base", PAT_MATCH_END },
11433 { "base_len", "base", PAT_MATCH_LEN },
11434 { "base_reg", "base", PAT_MATCH_REG },
11435 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11436
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11437 { "cook", "req.cook", PAT_MATCH_STR },
11438 { "cook_beg", "req.cook", PAT_MATCH_BEG },
11439 { "cook_dir", "req.cook", PAT_MATCH_DIR },
11440 { "cook_dom", "req.cook", PAT_MATCH_DOM },
11441 { "cook_end", "req.cook", PAT_MATCH_END },
11442 { "cook_len", "req.cook", PAT_MATCH_LEN },
11443 { "cook_reg", "req.cook", PAT_MATCH_REG },
11444 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11445
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11446 { "hdr", "req.hdr", PAT_MATCH_STR },
11447 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
11448 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
11449 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
11450 { "hdr_end", "req.hdr", PAT_MATCH_END },
11451 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
11452 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
11453 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11454
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11455 /* these two declarations uses strings with list storage (in place
11456 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
11457 * and delete functions are relative to the list management. The parse
11458 * and match method are related to the corresponding fetch methods. This
11459 * is very particular ACL declaration mode.
11460 */
11461 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
11462 { "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]11463
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11464 { "path", "path", PAT_MATCH_STR },
11465 { "path_beg", "path", PAT_MATCH_BEG },
11466 { "path_dir", "path", PAT_MATCH_DIR },
11467 { "path_dom", "path", PAT_MATCH_DOM },
11468 { "path_end", "path", PAT_MATCH_END },
11469 { "path_len", "path", PAT_MATCH_LEN },
11470 { "path_reg", "path", PAT_MATCH_REG },
11471 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11472
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11473 { "req_ver", "req.ver", PAT_MATCH_STR },
11474 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11475
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11476 { "scook", "res.cook", PAT_MATCH_STR },
11477 { "scook_beg", "res.cook", PAT_MATCH_BEG },
11478 { "scook_dir", "res.cook", PAT_MATCH_DIR },
11479 { "scook_dom", "res.cook", PAT_MATCH_DOM },
11480 { "scook_end", "res.cook", PAT_MATCH_END },
11481 { "scook_len", "res.cook", PAT_MATCH_LEN },
11482 { "scook_reg", "res.cook", PAT_MATCH_REG },
11483 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11484
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11485 { "shdr", "res.hdr", PAT_MATCH_STR },
11486 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
11487 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
11488 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
11489 { "shdr_end", "res.hdr", PAT_MATCH_END },
11490 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
11491 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
11492 { "shdr_sub", "res.hdr", 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 { "url", "url", PAT_MATCH_STR },
11495 { "url_beg", "url", PAT_MATCH_BEG },
11496 { "url_dir", "url", PAT_MATCH_DIR },
11497 { "url_dom", "url", PAT_MATCH_DOM },
11498 { "url_end", "url", PAT_MATCH_END },
11499 { "url_len", "url", PAT_MATCH_LEN },
11500 { "url_reg", "url", PAT_MATCH_REG },
11501 { "url_sub", "url", 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 { "urlp", "urlp", PAT_MATCH_STR },
11504 { "urlp_beg", "urlp", PAT_MATCH_BEG },
11505 { "urlp_dir", "urlp", PAT_MATCH_DIR },
11506 { "urlp_dom", "urlp", PAT_MATCH_DOM },
11507 { "urlp_end", "urlp", PAT_MATCH_END },
11508 { "urlp_len", "urlp", PAT_MATCH_LEN },
11509 { "urlp_reg", "urlp", PAT_MATCH_REG },
11510 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11511
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]11512 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11513}};
11514
11515/************************************************************************/
11516/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11517/************************************************************************/
11518/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]11519static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11520 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11521 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
11522 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
11523
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11524 /* capture are allocated and are permanent in the session */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11525 { "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]11526
11527 /* retrieve these captures from the HTTP logs */
11528 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11529 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11530 { "capture.req.ver", smp_fetch_capture_req_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11531
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11532 { "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]11533 { "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]11534
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11535 /* cookie is valid in both directions (eg: for "stick ...") but cook*
11536 * are only here to match the ACL's name, are request-only and are used
11537 * for ACL compatibility only.
11538 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11539 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
11540 { "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]11541 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11542 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11543
11544 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
11545 * only here to match the ACL's name, are request-only and are used for
11546 * ACL compatibility only.
11547 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11548 { "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]11549 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11550 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
11551 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
11552
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]11553 { "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]11554 { "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]11555 { "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]11556 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11557 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11558
11559 /* HTTP protocol on the request path */
11560 { "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]11561 { "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]11562
11563 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11564 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
11565 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11566
11567 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11568 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
11569 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11570
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11571 /* 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]11572 { "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]11573 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11574 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11575
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11576 { "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]11577 { "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]11578 { "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]11579 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11580 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
11581 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
11582
11583 /* 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]11584 { "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]11585 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11586 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11587
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11588 { "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]11589 { "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]11590 { "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]11591 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11592 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
11593 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
11594
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11595 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11596 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11597 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11598 { "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]11599 { "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]11600
11601 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11602 { "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]11603 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11604 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
11605 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
11606
11607 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11608 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11609 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
11610 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11611 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
11612 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11613 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
11614 { "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]11615 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11616 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11617}};
11618
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11619
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11620/* Note: must not be declared <const> as its list will be overwritten */
11621static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11622 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR},
11623 { "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]11624 { NULL, NULL, 0, 0, 0 },
11625}};
11626
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11627__attribute__((constructor))
11628static void __http_protocol_init(void)
11629{
11630 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11631 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11632 sample_register_convs(&sample_conv_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11633}
11634
11635
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]11636/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]11637 * Local variables:
11638 * c-indent-level: 8
11639 * c-basic-offset: 8
11640 * End:
11641 */