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git01.mediatek.com / haproxy / 890988f122eb8a5ecb05a914a781a3ac33abb904 / . / src / proto_http.c
blob: a1b064abdfcd33f263a01161665ee6ba27d7e829 [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>
67
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]68const char HTTP_100[] =
69 "HTTP/1.1 100 Continue\r\n\r\n";
70
71const struct chunk http_100_chunk = {
72 .str = (char *)&HTTP_100,
73 .len = sizeof(HTTP_100)-1
74};
75
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]76/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]77const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]78 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]79 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]80 "Location: "; /* not terminated since it will be concatenated with the URL */
81
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]82const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]83 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]84 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]85 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86 "Location: "; /* not terminated since it will be concatenated with the URL */
87
88/* same as 302 except that the browser MUST retry with the GET method */
89const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]90 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]91 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]92 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]93 "Location: "; /* not terminated since it will be concatenated with the URL */
94
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]95
96/* same as 302 except that the browser MUST retry with the same method */
97const char *HTTP_307 =
98 "HTTP/1.1 307 Temporary Redirect\r\n"
99 "Cache-Control: no-cache\r\n"
100 "Content-length: 0\r\n"
101 "Location: "; /* not terminated since it will be concatenated with the URL */
102
103/* same as 301 except that the browser MUST retry with the same method */
104const char *HTTP_308 =
105 "HTTP/1.1 308 Permanent Redirect\r\n"
106 "Content-length: 0\r\n"
107 "Location: "; /* not terminated since it will be concatenated with the URL */
108
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]109/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
110const char *HTTP_401_fmt =
111 "HTTP/1.0 401 Unauthorized\r\n"
112 "Cache-Control: no-cache\r\n"
113 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]114 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]115 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
116 "\r\n"
117 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
118
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]119const char *HTTP_407_fmt =
120 "HTTP/1.0 407 Unauthorized\r\n"
121 "Cache-Control: no-cache\r\n"
122 "Connection: close\r\n"
123 "Content-Type: text/html\r\n"
124 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
125 "\r\n"
126 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
127
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]128
129const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]130 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]131 [HTTP_ERR_400] = 400,
132 [HTTP_ERR_403] = 403,
133 [HTTP_ERR_408] = 408,
134 [HTTP_ERR_500] = 500,
135 [HTTP_ERR_502] = 502,
136 [HTTP_ERR_503] = 503,
137 [HTTP_ERR_504] = 504,
138};
139
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]140static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]141 [HTTP_ERR_200] =
142 "HTTP/1.0 200 OK\r\n"
143 "Cache-Control: no-cache\r\n"
144 "Connection: close\r\n"
145 "Content-Type: text/html\r\n"
146 "\r\n"
147 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
148
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]149 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]150 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]151 "Cache-Control: no-cache\r\n"
152 "Connection: close\r\n"
153 "Content-Type: text/html\r\n"
154 "\r\n"
155 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
156
157 [HTTP_ERR_403] =
158 "HTTP/1.0 403 Forbidden\r\n"
159 "Cache-Control: no-cache\r\n"
160 "Connection: close\r\n"
161 "Content-Type: text/html\r\n"
162 "\r\n"
163 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
164
165 [HTTP_ERR_408] =
166 "HTTP/1.0 408 Request Time-out\r\n"
167 "Cache-Control: no-cache\r\n"
168 "Connection: close\r\n"
169 "Content-Type: text/html\r\n"
170 "\r\n"
171 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
172
173 [HTTP_ERR_500] =
174 "HTTP/1.0 500 Server Error\r\n"
175 "Cache-Control: no-cache\r\n"
176 "Connection: close\r\n"
177 "Content-Type: text/html\r\n"
178 "\r\n"
179 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
180
181 [HTTP_ERR_502] =
182 "HTTP/1.0 502 Bad Gateway\r\n"
183 "Cache-Control: no-cache\r\n"
184 "Connection: close\r\n"
185 "Content-Type: text/html\r\n"
186 "\r\n"
187 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
188
189 [HTTP_ERR_503] =
190 "HTTP/1.0 503 Service Unavailable\r\n"
191 "Cache-Control: no-cache\r\n"
192 "Connection: close\r\n"
193 "Content-Type: text/html\r\n"
194 "\r\n"
195 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
196
197 [HTTP_ERR_504] =
198 "HTTP/1.0 504 Gateway Time-out\r\n"
199 "Cache-Control: no-cache\r\n"
200 "Connection: close\r\n"
201 "Content-Type: text/html\r\n"
202 "\r\n"
203 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
204
205};
206
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]207/* status codes available for the stats admin page (strictly 4 chars length) */
208const char *stat_status_codes[STAT_STATUS_SIZE] = {
209 [STAT_STATUS_DENY] = "DENY",
210 [STAT_STATUS_DONE] = "DONE",
211 [STAT_STATUS_ERRP] = "ERRP",
212 [STAT_STATUS_EXCD] = "EXCD",
213 [STAT_STATUS_NONE] = "NONE",
214 [STAT_STATUS_PART] = "PART",
215 [STAT_STATUS_UNKN] = "UNKN",
216};
217
218
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]219/* We must put the messages here since GCC cannot initialize consts depending
220 * on strlen().
221 */
222struct chunk http_err_chunks[HTTP_ERR_SIZE];
223
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]224/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
225static struct hdr_ctx static_hdr_ctx;
226
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]227#define FD_SETS_ARE_BITFIELDS
228#ifdef FD_SETS_ARE_BITFIELDS
229/*
230 * This map is used with all the FD_* macros to check whether a particular bit
231 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
232 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
233 * byte should be encoded. Be careful to always pass bytes from 0 to 255
234 * exclusively to the macros.
235 */
236fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
237fd_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]238fd_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]239
240#else
241#error "Check if your OS uses bitfields for fd_sets"
242#endif
243
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]244void init_proto_http()
245{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]246 int i;
247 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]248 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]249
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]250 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
251 if (!http_err_msgs[msg]) {
252 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
253 abort();
254 }
255
256 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
257 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
258 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]259
260 /* initialize the log header encoding map : '{|}"#' should be encoded with
261 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
262 * URL encoding only requires '"', '#' to be encoded as well as non-
263 * printable characters above.
264 */
265 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
266 memset(url_encode_map, 0, sizeof(url_encode_map));
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]267 memset(http_encode_map, 0, sizeof(url_encode_map));
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]268 for (i = 0; i < 32; i++) {
269 FD_SET(i, hdr_encode_map);
270 FD_SET(i, url_encode_map);
271 }
272 for (i = 127; i < 256; i++) {
273 FD_SET(i, hdr_encode_map);
274 FD_SET(i, url_encode_map);
275 }
276
277 tmp = "\"#{|}";
278 while (*tmp) {
279 FD_SET(*tmp, hdr_encode_map);
280 tmp++;
281 }
282
283 tmp = "\"#";
284 while (*tmp) {
285 FD_SET(*tmp, url_encode_map);
286 tmp++;
287 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]288
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]289 /* initialize the http header encoding map. The draft httpbis define the
290 * header content as:
291 *
292 * HTTP-message = start-line
293 * *( header-field CRLF )
294 * CRLF
295 * [ message-body ]
296 * header-field = field-name ":" OWS field-value OWS
297 * field-value = *( field-content / obs-fold )
298 * field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
299 * obs-fold = CRLF 1*( SP / HTAB )
300 * field-vchar = VCHAR / obs-text
301 * VCHAR = %x21-7E
302 * obs-text = %x80-FF
303 *
304 * All the chars are encoded except "VCHAR", "obs-text", SP and HTAB.
305 * The encoded chars are form 0x00 to 0x08, 0x0a to 0x1f and 0x7f. The
306 * "obs-fold" is volontary forgotten because haproxy remove this.
307 */
308 memset(http_encode_map, 0, sizeof(http_encode_map));
309 for (i = 0x00; i <= 0x08; i++)
310 FD_SET(i, http_encode_map);
311 for (i = 0x0a; i <= 0x1f; i++)
312 FD_SET(i, http_encode_map);
313 FD_SET(0x7f, http_encode_map);
314
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]315 /* memory allocations */
316 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]317 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]318}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]319
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]320/*
321 * We have 26 list of methods (1 per first letter), each of which can have
322 * up to 3 entries (2 valid, 1 null).
323 */
324struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]325 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]326 int len;
327 const char text[8];
328};
329
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]330const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]331 ['C' - 'A'] = {
332 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
333 },
334 ['D' - 'A'] = {
335 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
336 },
337 ['G' - 'A'] = {
338 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
339 },
340 ['H' - 'A'] = {
341 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
342 },
343 ['P' - 'A'] = {
344 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
345 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
346 },
347 ['T' - 'A'] = {
348 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
349 },
350 /* rest is empty like this :
351 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
352 */
353};
354
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]355const struct http_method_name http_known_methods[HTTP_METH_OTHER] = {
356 [HTTP_METH_NONE] = { "", 0 },
357 [HTTP_METH_OPTIONS] = { "OPTIONS", 7 },
358 [HTTP_METH_GET] = { "GET", 3 },
359 [HTTP_METH_HEAD] = { "HEAD", 4 },
360 [HTTP_METH_POST] = { "POST", 4 },
361 [HTTP_METH_PUT] = { "PUT", 3 },
362 [HTTP_METH_DELETE] = { "DELETE", 6 },
363 [HTTP_METH_TRACE] = { "TRACE", 5 },
364 [HTTP_METH_CONNECT] = { "CONNECT", 7 },
365};
366
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]367/* 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]368 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]369 * RFC2616 for those chars.
370 */
371
372const char http_is_spht[256] = {
373 [' '] = 1, ['\t'] = 1,
374};
375
376const char http_is_crlf[256] = {
377 ['\r'] = 1, ['\n'] = 1,
378};
379
380const char http_is_lws[256] = {
381 [' '] = 1, ['\t'] = 1,
382 ['\r'] = 1, ['\n'] = 1,
383};
384
385const char http_is_sep[256] = {
386 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
387 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
388 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
389 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
390 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
391};
392
393const char http_is_ctl[256] = {
394 [0 ... 31] = 1,
395 [127] = 1,
396};
397
398/*
399 * A token is any ASCII char that is neither a separator nor a CTL char.
400 * Do not overwrite values in assignment since gcc-2.95 will not handle
401 * them correctly. Instead, define every non-CTL char's status.
402 */
403const char http_is_token[256] = {
404 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
405 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
406 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
407 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
408 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
409 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
410 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
411 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
412 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
413 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
414 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
415 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
416 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
417 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
418 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
419 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
420 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
421 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
422 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
423 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
424 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
425 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
426 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
427 ['|'] = 1, ['}'] = 0, ['~'] = 1,
428};
429
430
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]431/*
432 * An http ver_token is any ASCII which can be found in an HTTP version,
433 * which includes 'H', 'T', 'P', '/', '.' and any digit.
434 */
435const char http_is_ver_token[256] = {
436 ['.'] = 1, ['/'] = 1,
437 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
438 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
439 ['H'] = 1, ['P'] = 1, ['T'] = 1,
440};
441
442
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]443/*
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]444 * Silent debug that outputs only in strace, using fd #-1. Trash is modified.
445 */
446#if defined(DEBUG_FSM)
447static void http_silent_debug(int line, struct session *s)
448{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]449 chunk_printf(&trash,
450 "[%04d] req: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld tf=%08x\n",
451 line,
452 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
453 s->req->buf->data, s->req->buf->size, s->req->l, s->req->w, s->req->r, s->req->buf->p, s->req->buf->o, s->req->to_forward, s->txn.flags);
454 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]455
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]456 chunk_printf(&trash,
457 " %04d rep: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld\n",
458 line,
459 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
460 s->rep->buf->data, s->rep->buf->size, s->rep->l, s->rep->w, s->rep->r, s->rep->buf->p, s->rep->buf->o, s->rep->to_forward);
461 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]462}
463#else
464#define http_silent_debug(l,s) do { } while (0)
465#endif
466
467/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]468 * Adds a header and its CRLF at the tail of the message's buffer, just before
469 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]470 * The header is also automatically added to the index <hdr_idx>, and the end
471 * of headers is automatically adjusted. The number of bytes added is returned
472 * on success, otherwise <0 is returned indicating an error.
473 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]474int 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]475{
476 int bytes, len;
477
478 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]479 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]480 if (!bytes)
481 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]482 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]483 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
484}
485
486/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]487 * Adds a header and its CRLF at the tail of the message's buffer, just before
488 * 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]489 * the buffer is only opened and the space reserved, but nothing is copied.
490 * The header is also automatically added to the index <hdr_idx>, and the end
491 * of headers is automatically adjusted. The number of bytes added is returned
492 * on success, otherwise <0 is returned indicating an error.
493 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]494int http_header_add_tail2(struct http_msg *msg,
495 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]496{
497 int bytes;
498
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]499 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]500 if (!bytes)
501 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]502 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]503 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
504}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]505
506/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]507 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
508 * If so, returns the position of the first non-space character relative to
509 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
510 * to return a pointer to the place after the first space. Returns 0 if the
511 * header name does not match. Checks are case-insensitive.
512 */
513int http_header_match2(const char *hdr, const char *end,
514 const char *name, int len)
515{
516 const char *val;
517
518 if (hdr + len >= end)
519 return 0;
520 if (hdr[len] != ':')
521 return 0;
522 if (strncasecmp(hdr, name, len) != 0)
523 return 0;
524 val = hdr + len + 1;
525 while (val < end && HTTP_IS_SPHT(*val))
526 val++;
527 if ((val >= end) && (len + 2 <= end - hdr))
528 return len + 2; /* we may replace starting from second space */
529 return val - hdr;
530}
531
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]532/* Find the first or next occurrence of header <name> in message buffer <sol>
533 * using headers index <idx>, and return it in the <ctx> structure. This
534 * structure holds everything necessary to use the header and find next
535 * occurrence. If its <idx> member is 0, the header is searched from the
536 * beginning. Otherwise, the next occurrence is returned. The function returns
537 * 1 when it finds a value, and 0 when there is no more. It is very similar to
538 * http_find_header2() except that it is designed to work with full-line headers
539 * whose comma is not a delimiter but is part of the syntax. As a special case,
540 * if ctx->val is NULL when searching for a new values of a header, the current
541 * header is rescanned. This allows rescanning after a header deletion.
542 */
543int http_find_full_header2(const char *name, int len,
544 char *sol, struct hdr_idx *idx,
545 struct hdr_ctx *ctx)
546{
547 char *eol, *sov;
548 int cur_idx, old_idx;
549
550 cur_idx = ctx->idx;
551 if (cur_idx) {
552 /* We have previously returned a header, let's search another one */
553 sol = ctx->line;
554 eol = sol + idx->v[cur_idx].len;
555 goto next_hdr;
556 }
557
558 /* first request for this header */
559 sol += hdr_idx_first_pos(idx);
560 old_idx = 0;
561 cur_idx = hdr_idx_first_idx(idx);
562 while (cur_idx) {
563 eol = sol + idx->v[cur_idx].len;
564
565 if (len == 0) {
566 /* No argument was passed, we want any header.
567 * To achieve this, we simply build a fake request. */
568 while (sol + len < eol && sol[len] != ':')
569 len++;
570 name = sol;
571 }
572
573 if ((len < eol - sol) &&
574 (sol[len] == ':') &&
575 (strncasecmp(sol, name, len) == 0)) {
576 ctx->del = len;
577 sov = sol + len + 1;
578 while (sov < eol && http_is_lws[(unsigned char)*sov])
579 sov++;
580
581 ctx->line = sol;
582 ctx->prev = old_idx;
583 ctx->idx = cur_idx;
584 ctx->val = sov - sol;
585 ctx->tws = 0;
586 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
587 eol--;
588 ctx->tws++;
589 }
590 ctx->vlen = eol - sov;
591 return 1;
592 }
593 next_hdr:
594 sol = eol + idx->v[cur_idx].cr + 1;
595 old_idx = cur_idx;
596 cur_idx = idx->v[cur_idx].next;
597 }
598 return 0;
599}
600
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]601/* Find the end of the header value contained between <s> and <e>. See RFC2616,
602 * par 2.2 for more information. Note that it requires a valid header to return
603 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]604 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]605char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]606{
607 int quoted, qdpair;
608
609 quoted = qdpair = 0;
610 for (; s < e; s++) {
611 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]612 else if (quoted) {
613 if (*s == '\\') qdpair = 1;
614 else if (*s == '"') quoted = 0;
615 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]616 else if (*s == '"') quoted = 1;
617 else if (*s == ',') return s;
618 }
619 return s;
620}
621
622/* Find the first or next occurrence of header <name> in message buffer <sol>
623 * using headers index <idx>, and return it in the <ctx> structure. This
624 * structure holds everything necessary to use the header and find next
625 * occurrence. If its <idx> member is 0, the header is searched from the
626 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]627 * 1 when it finds a value, and 0 when there is no more. It is designed to work
628 * with headers defined as comma-separated lists. As a special case, if ctx->val
629 * is NULL when searching for a new values of a header, the current header is
630 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]631 */
632int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]633 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]634 struct hdr_ctx *ctx)
635{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]636 char *eol, *sov;
637 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]638
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]639 cur_idx = ctx->idx;
640 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]641 /* We have previously returned a value, let's search
642 * another one on the same line.
643 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]644 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]645 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]646 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]647 eol = sol + idx->v[cur_idx].len;
648
649 if (sov >= eol)
650 /* no more values in this header */
651 goto next_hdr;
652
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]653 /* values remaining for this header, skip the comma but save it
654 * for later use (eg: for header deletion).
655 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]656 sov++;
657 while (sov < eol && http_is_lws[(unsigned char)*sov])
658 sov++;
659
660 goto return_hdr;
661 }
662
663 /* first request for this header */
664 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]665 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]666 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]667 while (cur_idx) {
668 eol = sol + idx->v[cur_idx].len;
669
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]670 if (len == 0) {
671 /* No argument was passed, we want any header.
672 * To achieve this, we simply build a fake request. */
673 while (sol + len < eol && sol[len] != ':')
674 len++;
675 name = sol;
676 }
677
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]678 if ((len < eol - sol) &&
679 (sol[len] == ':') &&
680 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]681 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]682 sov = sol + len + 1;
683 while (sov < eol && http_is_lws[(unsigned char)*sov])
684 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]685
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]686 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]687 ctx->prev = old_idx;
688 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]689 ctx->idx = cur_idx;
690 ctx->val = sov - sol;
691
692 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]693 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]694 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]695 eol--;
696 ctx->tws++;
697 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]698 ctx->vlen = eol - sov;
699 return 1;
700 }
701 next_hdr:
702 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]703 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]704 cur_idx = idx->v[cur_idx].next;
705 }
706 return 0;
707}
708
709int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]710 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]711 struct hdr_ctx *ctx)
712{
713 return http_find_header2(name, strlen(name), sol, idx, ctx);
714}
715
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]716/* Remove one value of a header. This only works on a <ctx> returned by one of
717 * the http_find_header functions. The value is removed, as well as surrounding
718 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]719 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]720 * message <msg>. The new index is returned. If it is zero, it means there is
721 * no more header, so any processing may stop. The ctx is always left in a form
722 * that can be handled by http_find_header2() to find next occurrence.
723 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]724int 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]725{
726 int cur_idx = ctx->idx;
727 char *sol = ctx->line;
728 struct hdr_idx_elem *hdr;
729 int delta, skip_comma;
730
731 if (!cur_idx)
732 return 0;
733
734 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]735 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]736 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]737 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]738 http_msg_move_end(msg, delta);
739 idx->used--;
740 hdr->len = 0; /* unused entry */
741 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]742 if (idx->tail == ctx->idx)
743 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]744 ctx->idx = ctx->prev; /* walk back to the end of previous header */
745 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
746 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]747 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]748 return ctx->idx;
749 }
750
751 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]752 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
753 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]754 */
755
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]756 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]757 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]758 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]759 NULL, 0);
760 hdr->len += delta;
761 http_msg_move_end(msg, delta);
762 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]763 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]764 return ctx->idx;
765}
766
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]767/* This function handles a server error at the stream interface level. The
768 * stream interface is assumed to be already in a closed state. An optional
769 * message is copied into the input buffer, and an HTTP status code stored.
770 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]771 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]772 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]773static void http_server_error(struct session *t, struct stream_interface *si,
774 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]775{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]776 channel_auto_read(si->ob);
777 channel_abort(si->ob);
778 channel_auto_close(si->ob);
779 channel_erase(si->ob);
780 channel_auto_close(si->ib);
781 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]782 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]783 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]784 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]785 }
786 if (!(t->flags & SN_ERR_MASK))
787 t->flags |= err;
788 if (!(t->flags & SN_FINST_MASK))
789 t->flags |= finst;
790}
791
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]792/* This function returns the appropriate error location for the given session
793 * and message.
794 */
795
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]796struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]797{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]798 if (s->be->errmsg[msgnum].str)
799 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]800 else if (s->fe->errmsg[msgnum].str)
801 return &s->fe->errmsg[msgnum];
802 else
803 return &http_err_chunks[msgnum];
804}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]805
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]806/*
807 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
808 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
809 */
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]810enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]811{
812 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]813 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]814
815 m = ((unsigned)*str - 'A');
816
817 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]818 for (h = http_methods[m]; h->len > 0; h++) {
819 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]820 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]821 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]822 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]823 };
824 return HTTP_METH_OTHER;
825 }
826 return HTTP_METH_NONE;
827
828}
829
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]830/* Parse the URI from the given transaction (which is assumed to be in request
831 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
832 * It is returned otherwise.
833 */
834static char *
835http_get_path(struct http_txn *txn)
836{
837 char *ptr, *end;
838
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]839 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]840 end = ptr + txn->req.sl.rq.u_l;
841
842 if (ptr >= end)
843 return NULL;
844
845 /* RFC2616, par. 5.1.2 :
846 * Request-URI = "*" | absuri | abspath | authority
847 */
848
849 if (*ptr == '*')
850 return NULL;
851
852 if (isalpha((unsigned char)*ptr)) {
853 /* this is a scheme as described by RFC3986, par. 3.1 */
854 ptr++;
855 while (ptr < end &&
856 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
857 ptr++;
858 /* skip '://' */
859 if (ptr == end || *ptr++ != ':')
860 return NULL;
861 if (ptr == end || *ptr++ != '/')
862 return NULL;
863 if (ptr == end || *ptr++ != '/')
864 return NULL;
865 }
866 /* skip [user[:passwd]@]host[:[port]] */
867
868 while (ptr < end && *ptr != '/')
869 ptr++;
870
871 if (ptr == end)
872 return NULL;
873
874 /* OK, we got the '/' ! */
875 return ptr;
876}
877
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]878/* Parse the URI from the given string and look for the "/" beginning the PATH.
879 * If not found, return NULL. It is returned otherwise.
880 */
881static char *
882http_get_path_from_string(char *str)
883{
884 char *ptr = str;
885
886 /* RFC2616, par. 5.1.2 :
887 * Request-URI = "*" | absuri | abspath | authority
888 */
889
890 if (*ptr == '*')
891 return NULL;
892
893 if (isalpha((unsigned char)*ptr)) {
894 /* this is a scheme as described by RFC3986, par. 3.1 */
895 ptr++;
896 while (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.')
897 ptr++;
898 /* skip '://' */
899 if (*ptr == '\0' || *ptr++ != ':')
900 return NULL;
901 if (*ptr == '\0' || *ptr++ != '/')
902 return NULL;
903 if (*ptr == '\0' || *ptr++ != '/')
904 return NULL;
905 }
906 /* skip [user[:passwd]@]host[:[port]] */
907
908 while (*ptr != '\0' && *ptr != ' ' && *ptr != '/')
909 ptr++;
910
911 if (*ptr == '\0' || *ptr == ' ')
912 return NULL;
913
914 /* OK, we got the '/' ! */
915 return ptr;
916}
917
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]918/* Returns a 302 for a redirectable request that reaches a server working in
919 * in redirect mode. This may only be called just after the stream interface
920 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
921 * follow normal proxy processing. NOTE: this function is designed to support
922 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]923 */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]924void http_perform_server_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]925{
926 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]927 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]928 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]929 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]930
931 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]932 trash.len = strlen(HTTP_302);
933 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]934
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]935 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]936
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]937 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]938 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]939 return;
940
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]941 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]942 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]943 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
944 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]945 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]946
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]947 /* 3: add the request URI. Since it was already forwarded, we need
948 * to temporarily rewind the buffer.
949 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]950 txn = &s->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]951 b_rew(s->req->buf, rewind = s->req->buf->o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]952
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]953 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]954 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]955
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]956 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]957
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]958 if (!path)
959 return;
960
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]961 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]962 return;
963
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]964 memcpy(trash.str + trash.len, path, len);
965 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]966
967 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]968 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
969 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]970 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]971 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
972 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]973 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]974
975 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]976 si_shutr(si);
977 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]978 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]979 si->state = SI_ST_CLO;
980
981 /* send the message */
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]982 http_server_error(s, si, SN_ERR_LOCAL, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]983
984 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]985 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500[diff] [blame]986 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]987}
988
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]989/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]990 * that the server side is closed. Note that err_type is actually a
991 * bitmask, where almost only aborts may be cumulated with other
992 * values. We consider that aborted operations are more important
993 * than timeouts or errors due to the fact that nobody else in the
994 * logs might explain incomplete retries. All others should avoid
995 * being cumulated. It should normally not be possible to have multiple
996 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]997 * Note that connection errors appearing on the second request of a keep-alive
998 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]999 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1000void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1001{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]1002 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1003
1004 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1005 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1006 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1007 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1008 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1009 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
1010 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1011 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1012 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1013 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1014 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1015 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1016 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1017 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1018 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1019 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
1020 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1021 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1022 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau36346242014-02-24 18:26:30 +0100[diff] [blame]1023 503, (s->flags & SN_SRV_REUSED) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1024 http_error_message(s, HTTP_ERR_503));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]1025 else if (err_type & SI_ET_CONN_RES)
1026 http_server_error(s, si, SN_ERR_RESOURCE, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1027 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
1028 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1029 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1030 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1031 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1032}
1033
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1034extern const char sess_term_cond[8];
1035extern const char sess_fin_state[8];
1036extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1037struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]1038struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]1039struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1040
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1041/*
1042 * Capture headers from message starting at <som> according to header list
1043 * <cap_hdr>, and fill the <idx> structure appropriately.
1044 */
1045void capture_headers(char *som, struct hdr_idx *idx,
1046 char **cap, struct cap_hdr *cap_hdr)
1047{
1048 char *eol, *sol, *col, *sov;
1049 int cur_idx;
1050 struct cap_hdr *h;
1051 int len;
1052
1053 sol = som + hdr_idx_first_pos(idx);
1054 cur_idx = hdr_idx_first_idx(idx);
1055
1056 while (cur_idx) {
1057 eol = sol + idx->v[cur_idx].len;
1058
1059 col = sol;
1060 while (col < eol && *col != ':')
1061 col++;
1062
1063 sov = col + 1;
1064 while (sov < eol && http_is_lws[(unsigned char)*sov])
1065 sov++;
1066
1067 for (h = cap_hdr; h; h = h->next) {
1068 if ((h->namelen == col - sol) &&
1069 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1070 if (cap[h->index] == NULL)
1071 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1072 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1073
1074 if (cap[h->index] == NULL) {
1075 Alert("HTTP capture : out of memory.\n");
1076 continue;
1077 }
1078
1079 len = eol - sov;
1080 if (len > h->len)
1081 len = h->len;
1082
1083 memcpy(cap[h->index], sov, len);
1084 cap[h->index][len]=0;
1085 }
1086 }
1087 sol = eol + idx->v[cur_idx].cr + 1;
1088 cur_idx = idx->v[cur_idx].next;
1089 }
1090}
1091
1092
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1093/* either we find an LF at <ptr> or we jump to <bad>.
1094 */
1095#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1096
1097/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1098 * otherwise to <http_msg_ood> with <state> set to <st>.
1099 */
1100#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1101 ptr++; \
1102 if (likely(ptr < end)) \
1103 goto good; \
1104 else { \
1105 state = (st); \
1106 goto http_msg_ood; \
1107 } \
1108 } while (0)
1109
1110
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1111/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1112 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1113 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1114 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1115 * will give undefined results.
1116 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1117 * and that msg->sol points to the beginning of the response.
1118 * If a complete line is found (which implies that at least one CR or LF is
1119 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1120 * returned indicating an incomplete line (which does not mean that parts have
1121 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1122 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1123 * upon next call.
1124 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1125 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1126 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1127 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1128 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1129 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1130const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1131 enum ht_state state, const char *ptr, const char *end,
1132 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1133{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1134 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1135
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1136 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1137 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1138 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1139 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1140 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1141
1142 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1143 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1144 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1145 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1146 state = HTTP_MSG_ERROR;
1147 break;
1148
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1149 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1150 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1151 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1152 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1153 goto http_msg_rpcode;
1154 }
1155 if (likely(HTTP_IS_SPHT(*ptr)))
1156 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1157 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1158 state = HTTP_MSG_ERROR;
1159 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1160
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1161 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1162 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1163 if (likely(!HTTP_IS_LWS(*ptr)))
1164 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1165
1166 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1167 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1168 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1169 }
1170
1171 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1172 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1173 http_msg_rsp_reason:
1174 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1175 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1176 msg->sl.st.r_l = 0;
1177 goto http_msg_rpline_eol;
1178
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1179 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1180 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1181 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1182 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1183 goto http_msg_rpreason;
1184 }
1185 if (likely(HTTP_IS_SPHT(*ptr)))
1186 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1187 /* so it's a CR/LF, so there is no reason phrase */
1188 goto http_msg_rsp_reason;
1189
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1190 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1191 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1192 if (likely(!HTTP_IS_CRLF(*ptr)))
1193 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1194 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1195 http_msg_rpline_eol:
1196 /* We have seen the end of line. Note that we do not
1197 * necessarily have the \n yet, but at least we know that we
1198 * have EITHER \r OR \n, otherwise the response would not be
1199 * complete. We can then record the response length and return
1200 * to the caller which will be able to register it.
1201 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1202 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1203 return ptr;
1204
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1205 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1206#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1207 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1208 exit(1);
1209#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1210 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1211 }
1212
1213 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1214 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1215 if (ret_state)
1216 *ret_state = state;
1217 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1218 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1219 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1220}
1221
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1222/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1223 * This function parses a request line between <ptr> and <end>, starting with
1224 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1225 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1226 * will give undefined results.
1227 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1228 * and that msg->sol points to the beginning of the request.
1229 * If a complete line is found (which implies that at least one CR or LF is
1230 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1231 * returned indicating an incomplete line (which does not mean that parts have
1232 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1233 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1234 * upon next call.
1235 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1236 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1237 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1238 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1239 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1240 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1241const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1242 enum ht_state state, const char *ptr, const char *end,
1243 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1244{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1245 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1246
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1247 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1248 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1249 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1250 if (likely(HTTP_IS_TOKEN(*ptr)))
1251 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1252
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1253 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1254 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1255 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1256 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1257
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1258 if (likely(HTTP_IS_CRLF(*ptr))) {
1259 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1260 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1261 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1262 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1263 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1264 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1265 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1266 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1267 msg->sl.rq.v_l = 0;
1268 goto http_msg_rqline_eol;
1269 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1270 state = HTTP_MSG_ERROR;
1271 break;
1272
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1273 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1274 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1275 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1276 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1277 goto http_msg_rquri;
1278 }
1279 if (likely(HTTP_IS_SPHT(*ptr)))
1280 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1281 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1282 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1283
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1284 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1285 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1286 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1287 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1288
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1289 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1290 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1291 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1292 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1293
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1294 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1295 /* non-ASCII chars are forbidden unless option
1296 * accept-invalid-http-request is enabled in the frontend.
1297 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1298 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1299 if (msg->err_pos < -1)
1300 goto invalid_char;
1301 if (msg->err_pos == -1)
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 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1304 }
1305
1306 if (likely(HTTP_IS_CRLF(*ptr))) {
1307 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1308 goto http_msg_req09_uri_e;
1309 }
1310
1311 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1312 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1313 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1314 state = HTTP_MSG_ERROR;
1315 break;
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_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1318 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1319 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1320 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1321 goto http_msg_rqver;
1322 }
1323 if (likely(HTTP_IS_SPHT(*ptr)))
1324 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1325 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1326 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1327
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1328 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1329 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1330 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1331 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1332
1333 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1334 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1335 http_msg_rqline_eol:
1336 /* We have seen the end of line. Note that we do not
1337 * necessarily have the \n yet, but at least we know that we
1338 * have EITHER \r OR \n, otherwise the request would not be
1339 * complete. We can then record the request length and return
1340 * to the caller which will be able to register it.
1341 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1342 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1343 return ptr;
1344 }
1345
1346 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1347 state = HTTP_MSG_ERROR;
1348 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1349
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1350 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1351#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1352 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1353 exit(1);
1354#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1355 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1356 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1357
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1358 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1359 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1360 if (ret_state)
1361 *ret_state = state;
1362 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1363 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1364 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1365}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1366
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1367/*
1368 * Returns the data from Authorization header. Function may be called more
1369 * than once so data is stored in txn->auth_data. When no header is found
1370 * 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]1371 * searching again for something we are unable to find anyway. However, if
1372 * the result if valid, the cache is not reused because we would risk to
1373 * have the credentials overwritten by another session in parallel.
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1374 */
1375
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1376/* This bufffer is initialized in the file 'src/haproxy.c'. This length is
1377 * set according to global.tune.bufsize.
1378 */
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1379char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1380
1381int
1382get_http_auth(struct session *s)
1383{
1384
1385 struct http_txn *txn = &s->txn;
1386 struct chunk auth_method;
1387 struct hdr_ctx ctx;
1388 char *h, *p;
1389 int len;
1390
1391#ifdef DEBUG_AUTH
1392 printf("Auth for session %p: %d\n", s, txn->auth.method);
1393#endif
1394
1395 if (txn->auth.method == HTTP_AUTH_WRONG)
1396 return 0;
1397
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1398 txn->auth.method = HTTP_AUTH_WRONG;
1399
1400 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1401
1402 if (txn->flags & TX_USE_PX_CONN) {
1403 h = "Proxy-Authorization";
1404 len = strlen(h);
1405 } else {
1406 h = "Authorization";
1407 len = strlen(h);
1408 }
1409
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1410 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]1411 return 0;
1412
1413 h = ctx.line + ctx.val;
1414
1415 p = memchr(h, ' ', ctx.vlen);
1416 if (!p || p == h)
1417 return 0;
1418
1419 chunk_initlen(&auth_method, h, 0, p-h);
1420 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1421
1422 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1423
1424 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1425 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1426
1427 if (len < 0)
1428 return 0;
1429
1430
1431 get_http_auth_buff[len] = '\0';
1432
1433 p = strchr(get_http_auth_buff, ':');
1434
1435 if (!p)
1436 return 0;
1437
1438 txn->auth.user = get_http_auth_buff;
1439 *p = '\0';
1440 txn->auth.pass = p+1;
1441
1442 txn->auth.method = HTTP_AUTH_BASIC;
1443 return 1;
1444 }
1445
1446 return 0;
1447}
1448
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1449
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1450/*
1451 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1452 * depending on the initial msg->msg_state. The caller is responsible for
1453 * ensuring that the message does not wrap. The function can be preempted
1454 * everywhere when data are missing and recalled at the exact same location
1455 * with no information loss. The message may even be realigned between two
1456 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1457 * 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]1458 * fields. Note that msg->sol will be initialized after completing the first
1459 * state, so that none of the msg pointers has to be initialized prior to the
1460 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1461 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1462void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1463{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1464 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1465 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1466 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1467
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1468 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1469 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1470 ptr = buf->p + msg->next;
1471 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1472
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1473 if (unlikely(ptr >= end))
1474 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1475
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1476 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1477 /*
1478 * First, states that are specific to the response only.
1479 * We check them first so that request and headers are
1480 * closer to each other (accessed more often).
1481 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1482 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1483 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1484 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1485 /* we have a start of message, but we have to check
1486 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1487 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1488 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1489 if (unlikely(ptr != buf->p)) {
1490 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1491 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1492 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1493 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1494 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1495 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1496 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1497 hdr_idx_init(idx);
1498 state = HTTP_MSG_RPVER;
1499 goto http_msg_rpver;
1500 }
1501
1502 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1503 goto http_msg_invalid;
1504
1505 if (unlikely(*ptr == '\n'))
1506 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1507 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1508 /* stop here */
1509
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1510 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1511 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1512 EXPECT_LF_HERE(ptr, http_msg_invalid);
1513 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1514 /* stop here */
1515
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1516 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1517 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1518 case HTTP_MSG_RPVER_SP:
1519 case HTTP_MSG_RPCODE:
1520 case HTTP_MSG_RPCODE_SP:
1521 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1522 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1523 state, ptr, end,
1524 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1525 if (unlikely(!ptr))
1526 return;
1527
1528 /* we have a full response and we know that we have either a CR
1529 * or an LF at <ptr>.
1530 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1531 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1532
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1533 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1534 if (likely(*ptr == '\r'))
1535 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1536 goto http_msg_rpline_end;
1537
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1538 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1539 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1540 /* msg->sol must point to the first of CR or LF. */
1541 EXPECT_LF_HERE(ptr, http_msg_invalid);
1542 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1543 /* stop here */
1544
1545 /*
1546 * Second, states that are specific to the request only
1547 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1548 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1549 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1550 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1551 /* we have a start of message, but we have to check
1552 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1553 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1554 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1555 if (likely(ptr != buf->p)) {
1556 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1557 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1558 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1559 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1560 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1561 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1562 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1563 state = HTTP_MSG_RQMETH;
1564 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1565 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1566
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1567 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1568 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1569
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1570 if (unlikely(*ptr == '\n'))
1571 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1572 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1573 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1574
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1575 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1576 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1577 EXPECT_LF_HERE(ptr, http_msg_invalid);
1578 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1579 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1580
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1581 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1582 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1583 case HTTP_MSG_RQMETH_SP:
1584 case HTTP_MSG_RQURI:
1585 case HTTP_MSG_RQURI_SP:
1586 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1587 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1588 state, ptr, end,
1589 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1590 if (unlikely(!ptr))
1591 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1592
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1593 /* we have a full request and we know that we have either a CR
1594 * or an LF at <ptr>.
1595 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1596 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1597
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1598 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1599 if (likely(*ptr == '\r'))
1600 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1601 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1602
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1603 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1604 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1605 /* check for HTTP/0.9 request : no version information available.
1606 * msg->sol must point to the first of CR or LF.
1607 */
1608 if (unlikely(msg->sl.rq.v_l == 0))
1609 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1610
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1611 EXPECT_LF_HERE(ptr, http_msg_invalid);
1612 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1613 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1614
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1615 /*
1616 * Common states below
1617 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1618 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1619 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1620 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1621 if (likely(!HTTP_IS_CRLF(*ptr))) {
1622 goto http_msg_hdr_name;
1623 }
1624
1625 if (likely(*ptr == '\r'))
1626 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1627 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1628
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1629 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1630 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1631 /* assumes msg->sol points to the first char */
1632 if (likely(HTTP_IS_TOKEN(*ptr)))
1633 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1634
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1635 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1636 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]1637
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1638 if (likely(msg->err_pos < -1) || *ptr == '\n')
1639 goto http_msg_invalid;
1640
1641 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1642 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1643
1644 /* and we still accept this non-token character */
1645 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1646
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1647 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1648 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1649 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1650 if (likely(HTTP_IS_SPHT(*ptr)))
1651 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]1652
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1653 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1654 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1655
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1656 if (likely(!HTTP_IS_CRLF(*ptr))) {
1657 goto http_msg_hdr_val;
1658 }
1659
1660 if (likely(*ptr == '\r'))
1661 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1662 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1663
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1664 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1665 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1666 EXPECT_LF_HERE(ptr, http_msg_invalid);
1667 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]1668
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1669 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1670 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1671 if (likely(HTTP_IS_SPHT(*ptr))) {
1672 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1673 for (; buf->p + msg->sov < ptr; msg->sov++)
1674 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1675 goto http_msg_hdr_l1_sp;
1676 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1677 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1678 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1679 goto http_msg_complete_header;
1680
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1681 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1682 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1683 /* assumes msg->sol points to the first char, and msg->sov
1684 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1685 */
1686 if (likely(!HTTP_IS_CRLF(*ptr)))
1687 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1688
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1689 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1690 /* Note: we could also copy eol into ->eoh so that we have the
1691 * real header end in case it ends with lots of LWS, but is this
1692 * really needed ?
1693 */
1694 if (likely(*ptr == '\r'))
1695 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1696 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1697
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1698 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1699 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1700 EXPECT_LF_HERE(ptr, http_msg_invalid);
1701 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]1702
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1703 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1704 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1705 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1706 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1707 for (; buf->p + msg->eol < ptr; msg->eol++)
1708 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1709 goto http_msg_hdr_val;
1710 }
1711 http_msg_complete_header:
1712 /*
1713 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1714 * Assumes msg->sol points to the first char, msg->sov points
1715 * to the first character of the value and msg->eol to the
1716 * first CR or LF so we know how the line ends. We insert last
1717 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1718 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1719 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1720 idx, idx->tail) < 0))
1721 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1722
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1723 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1724 if (likely(!HTTP_IS_CRLF(*ptr))) {
1725 goto http_msg_hdr_name;
1726 }
1727
1728 if (likely(*ptr == '\r'))
1729 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1730 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1731
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1732 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1733 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1734 /* Assumes msg->sol points to the first of either CR or LF */
1735 EXPECT_LF_HERE(ptr, http_msg_invalid);
1736 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1737 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1738 msg->eoh = msg->sol;
1739 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1740 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1741 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1742
1743 case HTTP_MSG_ERROR:
1744 /* this may only happen if we call http_msg_analyser() twice with an error */
1745 break;
1746
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1747 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1748#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1749 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1750 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1751#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1752 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1753 }
1754 http_msg_ood:
1755 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1756 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1757 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1758 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1759
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1760 http_msg_invalid:
1761 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1762 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1763 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1764 return;
1765}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1766
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1767/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1768 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1769 * nothing is done and 1 is returned.
1770 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1771static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1772{
1773 int delta;
1774 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1775 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1776
1777 if (msg->sl.rq.v_l != 0)
1778 return 1;
1779
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1780 /* RFC 1945 allows only GET for HTTP/0.9 requests */
1781 if (txn->meth != HTTP_METH_GET)
1782 return 0;
1783
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1784 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1785 delta = 0;
1786
1787 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1788 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
1789 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1790 }
1791 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1792 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]1793 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1794 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1795 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1796 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1797 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1798 NULL, NULL);
1799 if (unlikely(!cur_end))
1800 return 0;
1801
1802 /* we have a full HTTP/1.0 request now and we know that
1803 * we have either a CR or an LF at <ptr>.
1804 */
1805 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1806 return 1;
1807}
1808
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1809/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1810 * and "keep-alive" values. If we already know that some headers may safely
1811 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1812 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1813 * - 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]1814 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1815 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1816 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1817 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1818 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1819 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1820void 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]1821{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1822 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1823 const char *hdr_val = "Connection";
1824 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1825
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1826 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1827 return;
1828
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1829 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1830 hdr_val = "Proxy-Connection";
1831 hdr_len = 16;
1832 }
1833
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1834 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1835 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1836 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]1837 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1838 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1839 if (to_del & 2)
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_KAL_SET;
1843 }
1844 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1845 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1846 if (to_del & 1)
1847 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1848 else
1849 txn->flags |= TX_CON_CLO_SET;
1850 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1851 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1852 txn->flags |= TX_HDR_CONN_UPG;
1853 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1854 }
1855
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1856 txn->flags |= TX_HDR_CONN_PRS;
1857 return;
1858}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1859
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1860/* Apply desired changes on the Connection: header. Values may be removed and/or
1861 * added depending on the <wanted> flags, which are exclusively composed of
1862 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1863 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1864 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1865void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1866{
1867 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1868 const char *hdr_val = "Connection";
1869 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1870
1871 ctx.idx = 0;
1872
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1873
1874 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1875 hdr_val = "Proxy-Connection";
1876 hdr_len = 16;
1877 }
1878
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1879 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1880 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]1881 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1882 if (wanted & TX_CON_KAL_SET)
1883 txn->flags |= TX_CON_KAL_SET;
1884 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1885 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1886 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1887 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1888 if (wanted & TX_CON_CLO_SET)
1889 txn->flags |= TX_CON_CLO_SET;
1890 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1891 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1892 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1893 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1894
1895 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1896 return;
1897
1898 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1899 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1900 hdr_val = "Connection: close";
1901 hdr_len = 17;
1902 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1903 hdr_val = "Proxy-Connection: close";
1904 hdr_len = 23;
1905 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1906 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1907 }
1908
1909 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1910 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1911 hdr_val = "Connection: keep-alive";
1912 hdr_len = 22;
1913 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1914 hdr_val = "Proxy-Connection: keep-alive";
1915 hdr_len = 28;
1916 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1917 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1918 }
1919 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1920}
1921
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1922/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to the
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1923 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1924 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1925 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1926 * 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]1927 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1928static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1929{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1930 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1931 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1932 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1933 const char *end = buf->data + buf->size;
1934 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1935 unsigned int chunk = 0;
1936
1937 /* The chunk size is in the following form, though we are only
1938 * interested in the size and CRLF :
1939 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1940 */
1941 while (1) {
1942 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1943 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1944 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1945 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1946 if (c < 0) /* not a hex digit anymore */
1947 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1948 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1949 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1950 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1951 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1952 chunk = (chunk << 4) + c;
1953 }
1954
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1955 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1956 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1957 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1958
1959 while (http_is_spht[(unsigned char)*ptr]) {
1960 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1961 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1962 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1963 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1964 }
1965
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1966 /* Up to there, we know that at least one byte is present at *ptr. Check
1967 * for the end of chunk size.
1968 */
1969 while (1) {
1970 if (likely(HTTP_IS_CRLF(*ptr))) {
1971 /* we now have a CR or an LF at ptr */
1972 if (likely(*ptr == '\r')) {
1973 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1974 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1975 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1976 return 0;
1977 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1978
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1979 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1980 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1981 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1982 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1983 /* done */
1984 break;
1985 }
1986 else if (*ptr == ';') {
1987 /* chunk extension, ends at next CRLF */
1988 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1989 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1990 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1991 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1992
1993 while (!HTTP_IS_CRLF(*ptr)) {
1994 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1995 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1996 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1997 return 0;
1998 }
1999 /* we have a CRLF now, loop above */
2000 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2001 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2002 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2003 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2004 }
2005
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2006 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2007 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2008 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2009 */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2010 if (unlikely(ptr < ptr_old))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2011 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2012 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2013 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2014 msg->chunk_len = chunk;
2015 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2016 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2017 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2018 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2019 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2020 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2021}
2022
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2023/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2024 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2025 * the trailers is found, it is automatically scheduled to be forwarded,
2026 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
2027 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2028 * except maybe msg->next and msg->sov if it could parse some lines, and returns
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2029 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2030 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2031 * must already be in HTTP_MSG_TRAILERS state before calling this function,
2032 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2033 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2034 * matches the length of trailers already parsed and not forwarded. It is also
2035 * important to note that this function is designed to be able to parse wrapped
2036 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2037 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2038static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2039{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2040 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2041
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2042 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2043 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2044 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2045 const char *ptr = b_ptr(buf, msg->next);
2046 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2047 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2048
2049 /* scan current line and stop at LF or CRLF */
2050 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2051 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2052 return 0;
2053
2054 if (*ptr == '\n') {
2055 if (!p1)
2056 p1 = ptr;
2057 p2 = ptr;
2058 break;
2059 }
2060
2061 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2062 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2063 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2064 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2065 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2066 p1 = ptr;
2067 }
2068
2069 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2070 if (ptr >= buf->data + buf->size)
2071 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2072 }
2073
2074 /* after LF; point to beginning of next line */
2075 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2076 if (p2 >= buf->data + buf->size)
2077 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2078
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2079 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2080 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2081 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2082
2083 /* schedule this line for forwarding */
2084 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2085 if (msg->sov >= buf->size)
2086 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2087
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2088 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2089 /* LF/CRLF at beginning of line => end of trailers at p2.
2090 * Everything was scheduled for forwarding, there's nothing
2091 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]2092 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2093 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2094 msg->msg_state = HTTP_MSG_DONE;
2095 return 1;
2096 }
2097 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2098 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2099 }
2100}
2101
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]2102/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2103 * a possible LF alone at the end of a chunk. It automatically adjusts msg->sov,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2104 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2105 * 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]2106 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
2107 * not enough data are available, the function does not change anything and
2108 * returns zero. If a parse error is encountered, the function returns < 0 and
2109 * does not change anything. Note: this function is designed to parse wrapped
2110 * CRLF at the end of the buffer.
2111 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2112static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2113{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2114 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2115 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2116 int bytes;
2117
2118 /* NB: we'll check data availabilty at the end. It's not a
2119 * problem because whatever we match first will be checked
2120 * against the correct length.
2121 */
2122 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2123 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2124 if (*ptr == '\r') {
2125 bytes++;
2126 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2127 if (ptr >= buf->data + buf->size)
2128 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2129 }
2130
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2131 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2132 return 0;
2133
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2134 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2135 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2136 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2137 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2138
2139 ptr++;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2140 if (unlikely(ptr >= buf->data + buf->size))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2141 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2142 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
2143 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]2144 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2145 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
2146 return 1;
2147}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2148
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2149/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2150 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2151 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2152 * Unparsable qvalues return 1000 as "q=1.000".
2153 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2154int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2155{
2156 int q = 1000;
2157
2158 if (!isdigit(*qvalue))
2159 goto out;
2160 q = (*qvalue++ - '0') * 1000;
2161
2162 if (*qvalue++ != '.')
2163 goto out;
2164
2165 if (!isdigit(*qvalue))
2166 goto out;
2167 q += (*qvalue++ - '0') * 100;
2168
2169 if (!isdigit(*qvalue))
2170 goto out;
2171 q += (*qvalue++ - '0') * 10;
2172
2173 if (!isdigit(*qvalue))
2174 goto out;
2175 q += (*qvalue++ - '0') * 1;
2176 out:
2177 if (q > 1000)
2178 q = 1000;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2179 if (*end)
2180 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2181 return q;
2182}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2183
2184/*
2185 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2186 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2187int select_compression_request_header(struct session *s, struct buffer *req)
2188{
2189 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2190 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2191 struct hdr_ctx ctx;
2192 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2193 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2194
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2195 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
2196 * 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]2197 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
2198 */
2199 ctx.idx = 0;
2200 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
2201 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2202 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
2203 (ctx.vlen < 31 ||
2204 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
2205 ctx.line[ctx.val + 30] < '6' ||
2206 (ctx.line[ctx.val + 30] == '6' &&
2207 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
2208 s->comp_algo = NULL;
2209 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2210 }
2211
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2212 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2213 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]2214 int best_q = 0;
2215
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2216 ctx.idx = 0;
2217 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2218 const char *qval;
2219 int q;
2220 int toklen;
2221
2222 /* try to isolate the token from the optional q-value */
2223 toklen = 0;
2224 while (toklen < ctx.vlen && http_is_token[(unsigned char)*(ctx.line + ctx.val + toklen)])
2225 toklen++;
2226
2227 qval = ctx.line + ctx.val + toklen;
2228 while (1) {
2229 while (qval < ctx.line + ctx.val + ctx.vlen && http_is_lws[(unsigned char)*qval])
2230 qval++;
2231
2232 if (qval >= ctx.line + ctx.val + ctx.vlen || *qval != ';') {
2233 qval = NULL;
2234 break;
2235 }
2236 qval++;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2237
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2238 while (qval < ctx.line + ctx.val + ctx.vlen && http_is_lws[(unsigned char)*qval])
2239 qval++;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2240
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2241 if (qval >= ctx.line + ctx.val + ctx.vlen) {
2242 qval = NULL;
2243 break;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2244 }
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2245 if (strncmp(qval, "q=", MIN(ctx.line + ctx.val + ctx.vlen - qval, 2)) == 0)
2246 break;
2247
2248 while (qval < ctx.line + ctx.val + ctx.vlen && *qval != ';')
2249 qval++;
2250 }
2251
2252 /* 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]2253 q = qval ? parse_qvalue(qval + 2, NULL) : 1000;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2254
2255 if (q <= best_q)
2256 continue;
2257
2258 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
2259 if (*(ctx.line + ctx.val) == '*' ||
2260 word_match(ctx.line + ctx.val, toklen, comp_algo->name, comp_algo->name_len)) {
2261 s->comp_algo = comp_algo;
2262 best_q = q;
2263 break;
2264 }
2265 }
2266 }
2267 }
2268
2269 /* remove all occurrences of the header when "compression offload" is set */
2270 if (s->comp_algo) {
2271 if ((s->be->comp && s->be->comp->offload) || (s->fe->comp && s->fe->comp->offload)) {
2272 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2273 ctx.idx = 0;
2274 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2275 http_remove_header2(msg, &txn->hdr_idx, &ctx);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2276 }
2277 }
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2278 return 1;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2279 }
2280
2281 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2282 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2283 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2284 if (comp_algo->add_data == identity_add_data) {
2285 s->comp_algo = comp_algo;
2286 return 1;
2287 }
2288 }
2289 }
2290
2291 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2292 return 0;
2293}
2294
2295/*
2296 * Selects a comression algorithm depending of the server response.
2297 */
2298int select_compression_response_header(struct session *s, struct buffer *res)
2299{
2300 struct http_txn *txn = &s->txn;
2301 struct http_msg *msg = &txn->rsp;
2302 struct hdr_ctx ctx;
2303 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2304
2305 /* no common compression algorithm was found in request header */
2306 if (s->comp_algo == NULL)
2307 goto fail;
2308
2309 /* HTTP < 1.1 should not be compressed */
Willy Tarreau72575502013-12-24 14:41:35 +0100[diff] [blame]2310 if (!(msg->flags & HTTP_MSGF_VER_11) || !(txn->req.flags & HTTP_MSGF_VER_11))
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2311 goto fail;
2312
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2313 /* 200 only */
2314 if (txn->status != 200)
2315 goto fail;
2316
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2317 /* Content-Length is null */
2318 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2319 goto fail;
2320
Willy Tarreau667c2a32013-04-09 08:13:58 +0200[diff] [blame]2321 /* TEMPORARY WORKAROUND: do not compress if response is chunked !!!!!! */
2322 if (msg->flags & HTTP_MSGF_TE_CHNK)
2323 goto fail;
2324
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2325 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2326 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2327 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2328 goto fail;
2329
Willy Tarreau56e9ffa2013-01-05 16:20:35 +0100[diff] [blame]2330 /* no compression when Cache-Control: no-transform is present in the message */
2331 ctx.idx = 0;
2332 while (http_find_header2("Cache-Control", 13, res->p, &txn->hdr_idx, &ctx)) {
2333 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12))
2334 goto fail;
2335 }
2336
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2337 comp_type = NULL;
2338
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2339 /* we don't want to compress multipart content-types, nor content-types that are
2340 * not listed in the "compression type" directive if any. If no content-type was
2341 * found but configuration requires one, we don't compress either. Backend has
2342 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2343 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2344 ctx.idx = 0;
2345 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2346 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2347 goto fail;
2348
2349 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
2350 (s->fe->comp && (comp_type = s->fe->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2351 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2352 if (ctx.vlen >= comp_type->name_len &&
2353 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2354 /* this Content-Type should be compressed */
2355 break;
2356 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2357 /* this Content-Type should not be compressed */
2358 if (comp_type == NULL)
2359 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2360 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2361 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2362 else { /* no content-type header */
2363 if ((s->be->comp && s->be->comp->types) || (s->fe->comp && s->fe->comp->types))
2364 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2365 }
2366
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2367 /* limit compression rate */
2368 if (global.comp_rate_lim > 0)
2369 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2370 goto fail;
2371
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2372 /* limit cpu usage */
2373 if (idle_pct < compress_min_idle)
2374 goto fail;
2375
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2376 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2377 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2378 goto fail;
2379
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2380 s->flags |= SN_COMP_READY;
2381
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2382 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2383 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2384 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2385 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2386
2387 /* add Transfer-Encoding header */
2388 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2389 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2390
2391 /*
2392 * Add Content-Encoding header when it's not identity encoding.
2393 * RFC 2616 : Identity encoding: This content-coding is used only in the
2394 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2395 * header.
2396 */
2397 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2398 trash.len = 18;
2399 memcpy(trash.str, "Content-Encoding: ", trash.len);
2400 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2401 trash.len += s->comp_algo->name_len;
2402 trash.str[trash.len] = '\0';
2403 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2404 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2405 return 1;
2406
2407fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2408 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2409 return 0;
2410}
2411
2412
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2413/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2414 * processing can continue on next analysers, or zero if it either needs more
2415 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2416 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2417 * when it has nothing left to do, and may remove any analyser when it wants to
2418 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2419 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2420int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2421{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2422 /*
2423 * We will parse the partial (or complete) lines.
2424 * We will check the request syntax, and also join multi-line
2425 * headers. An index of all the lines will be elaborated while
2426 * parsing.
2427 *
2428 * For the parsing, we use a 28 states FSM.
2429 *
2430 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2431 * req->buf->p = beginning of request
2432 * req->buf->p + msg->eoh = end of processed headers / start of current one
2433 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2434 * msg->eol = end of current header or line (LF or CRLF)
2435 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2436 *
2437 * At end of parsing, we may perform a capture of the error (if any), and
2438 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2439 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2440 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2441 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2442
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2443 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2444 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2445 struct http_txn *txn = &s->txn;
2446 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2447 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2448
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2449 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]2450 now_ms, __FUNCTION__,
2451 s,
2452 req,
2453 req->rex, req->wex,
2454 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2455 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2456 req->analysers);
2457
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2458 /* we're speaking HTTP here, so let's speak HTTP to the client */
2459 s->srv_error = http_return_srv_error;
2460
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2461 /* There's a protected area at the end of the buffer for rewriting
2462 * purposes. We don't want to start to parse the request if the
2463 * protected area is affected, because we may have to move processed
2464 * data later, which is much more complicated.
2465 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2466 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2467 if (txn->flags & TX_NOT_FIRST) {
2468 if (unlikely(!channel_reserved(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2469 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2470 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2471 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2472 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2473 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2474 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2475 return 0;
2476 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2477 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2478 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2479 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2480 }
2481
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2482 /* Note that we have the same problem with the response ; we
2483 * may want to send a redirect, error or anything which requires
2484 * some spare space. So we'll ensure that we have at least
2485 * maxrewrite bytes available in the response buffer before
2486 * processing that one. This will only affect pipelined
2487 * keep-alive requests.
2488 */
2489 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2490 unlikely(!channel_reserved(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2491 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2492 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2493 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2494 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]2495 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2496 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2497 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2498 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2499 s->rep->flags |= CF_WAKE_WRITE;
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2500 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2501 return 0;
2502 }
2503 }
2504
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2505 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2506 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2507 }
2508
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2509 /* 1: we might have to print this header in debug mode */
2510 if (unlikely((global.mode & MODE_DEBUG) &&
2511 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2512 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2513 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2514
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2515 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2516 /* this is a bit complex : in case of error on the request line,
2517 * we know that rq.l is still zero, so we display only the part
2518 * up to the end of the line (truncated by debug_hdr).
2519 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2520 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2521 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2522
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2523 sol += hdr_idx_first_pos(&txn->hdr_idx);
2524 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2525
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2526 while (cur_idx) {
2527 eol = sol + txn->hdr_idx.v[cur_idx].len;
2528 debug_hdr("clihdr", s, sol, eol);
2529 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2530 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2531 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2532 }
2533
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2534
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2535 /*
2536 * Now we quickly check if we have found a full valid request.
2537 * If not so, we check the FD and buffer states before leaving.
2538 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2539 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2540 * requests are checked first. When waiting for a second request
2541 * on a keep-alive session, if we encounter and error, close, t/o,
2542 * we note the error in the session flags but don't set any state.
2543 * Since the error will be noted there, it will not be counted by
2544 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2545 * Last, we may increase some tracked counters' http request errors on
2546 * the cases that are deliberately the client's fault. For instance,
2547 * a timeout or connection reset is not counted as an error. However
2548 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2549 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2550
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2551 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2552 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2553 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2554 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2555 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2556 session_inc_http_req_ctr(s);
2557 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2558 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2559 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2560 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2561
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2562 /* 1: Since we are in header mode, if there's no space
2563 * left for headers, we won't be able to free more
2564 * later, so the session will never terminate. We
2565 * must terminate it now.
2566 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2567 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2568 /* FIXME: check if URI is set and return Status
2569 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2570 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2571 session_inc_http_req_ctr(s);
2572 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2573 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2574 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2575 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2576 goto return_bad_req;
2577 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2578
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2579 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2580 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2581 if (!(s->flags & SN_ERR_MASK))
2582 s->flags |= SN_ERR_CLICL;
2583
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2584 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2585 goto failed_keep_alive;
2586
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2587 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2588 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2589 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]2590 session_inc_http_err_ctr(s);
2591 }
2592
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2593 txn->status = 400;
2594 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2595 msg->msg_state = HTTP_MSG_ERROR;
2596 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2597
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2598 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2599 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2600 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2601 if (s->listener->counters)
2602 s->listener->counters->failed_req++;
2603
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2604 if (!(s->flags & SN_FINST_MASK))
2605 s->flags |= SN_FINST_R;
2606 return 0;
2607 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2608
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2609 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2610 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]2611 if (!(s->flags & SN_ERR_MASK))
2612 s->flags |= SN_ERR_CLITO;
2613
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2614 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2615 goto failed_keep_alive;
2616
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2617 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2618 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2619 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]2620 session_inc_http_err_ctr(s);
2621 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2622 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2623 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2624 msg->msg_state = HTTP_MSG_ERROR;
2625 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2626
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2627 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2628 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2629 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2630 if (s->listener->counters)
2631 s->listener->counters->failed_req++;
2632
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2633 if (!(s->flags & SN_FINST_MASK))
2634 s->flags |= SN_FINST_R;
2635 return 0;
2636 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2637
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2638 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2639 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2640 if (!(s->flags & SN_ERR_MASK))
2641 s->flags |= SN_ERR_CLICL;
2642
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2643 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2644 goto failed_keep_alive;
2645
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2646 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2647 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]2648 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2649 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2650 msg->msg_state = HTTP_MSG_ERROR;
2651 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2652
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2653 session_inc_http_err_ctr(s);
2654 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2655 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2656 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2657 if (s->listener->counters)
2658 s->listener->counters->failed_req++;
2659
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2660 if (!(s->flags & SN_FINST_MASK))
2661 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2662 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2663 }
2664
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2665 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2666 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2667 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2668#ifdef TCP_QUICKACK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]2669 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]2670 /* We need more data, we have to re-enable quick-ack in case we
2671 * previously disabled it, otherwise we might cause the client
2672 * to delay next data.
2673 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2674 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]2675 }
2676#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2677
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2678 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2679 /* If the client starts to talk, let's fall back to
2680 * request timeout processing.
2681 */
2682 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2683 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2684 }
2685
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2686 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2687 if (!tick_isset(req->analyse_exp)) {
2688 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2689 (txn->flags & TX_WAIT_NEXT_RQ) &&
2690 tick_isset(s->be->timeout.httpka))
2691 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2692 else
2693 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2694 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2695
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2696 /* we're not ready yet */
2697 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2698
2699 failed_keep_alive:
2700 /* Here we process low-level errors for keep-alive requests. In
2701 * short, if the request is not the first one and it experiences
2702 * a timeout, read error or shutdown, we just silently close so
2703 * that the client can try again.
2704 */
2705 txn->status = 0;
2706 msg->msg_state = HTTP_MSG_RQBEFORE;
2707 req->analysers = 0;
2708 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2709 s->logs.level = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2710 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2711 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2712 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2713 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2714
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2715 /* OK now we have a complete HTTP request with indexed headers. Let's
2716 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2717 * 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]2718 * 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]2719 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2720 * byte after the last LF. msg->sov points to the first byte of data.
2721 * msg->eol cannot be trusted because it may have been left uninitialized
2722 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2723 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2724
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2725 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2726 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2727
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2728 if (txn->flags & TX_WAIT_NEXT_RQ) {
2729 /* kill the pending keep-alive timeout */
2730 txn->flags &= ~TX_WAIT_NEXT_RQ;
2731 req->analyse_exp = TICK_ETERNITY;
2732 }
2733
2734
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2735 /* Maybe we found in invalid header name while we were configured not
2736 * to block on that, so we have to capture it now.
2737 */
2738 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2739 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]2740
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2741 /*
2742 * 1: identify the method
2743 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2744 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2745
2746 /* we can make use of server redirect on GET and HEAD */
2747 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2748 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2749
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2750 /*
2751 * 2: check if the URI matches the monitor_uri.
2752 * We have to do this for every request which gets in, because
2753 * the monitor-uri is defined by the frontend.
2754 */
2755 if (unlikely((s->fe->monitor_uri_len != 0) &&
2756 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2757 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2758 s->fe->monitor_uri,
2759 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2760 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2761 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2762 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2763 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2764
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2765 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2766 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2767
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2768 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2769 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2770 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]2771
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2772 ret = acl_pass(ret);
2773 if (cond->pol == ACL_COND_UNLESS)
2774 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2775
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2776 if (ret) {
2777 /* we fail this request, let's return 503 service unavail */
2778 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2779 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2780 if (!(s->flags & SN_ERR_MASK))
2781 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2782 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2783 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2784 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2785
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2786 /* nothing to fail, let's reply normaly */
2787 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2788 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2789 if (!(s->flags & SN_ERR_MASK))
2790 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2791 goto return_prx_cond;
2792 }
2793
2794 /*
2795 * 3: Maybe we have to copy the original REQURI for the logs ?
2796 * Note: we cannot log anymore if the request has been
2797 * classified as invalid.
2798 */
2799 if (unlikely(s->logs.logwait & LW_REQ)) {
2800 /* we have a complete HTTP request that we must log */
2801 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2802 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2803
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2804 if (urilen >= REQURI_LEN)
2805 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2806 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2807 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2808
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2809 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2810 s->do_log(s);
2811 } else {
2812 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2813 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2814 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2815
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2816 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2817 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2818 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2819
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2820 /* ... and check if the request is HTTP/1.1 or above */
2821 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2822 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2823 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2824 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2825 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2826
2827 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2828 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]2829
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2830 /* if the frontend has "option http-use-proxy-header", we'll check if
2831 * we have what looks like a proxied connection instead of a connection,
2832 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2833 * Note that this is *not* RFC-compliant, however browsers and proxies
2834 * happen to do that despite being non-standard :-(
2835 * We consider that a request not beginning with either '/' or '*' is
2836 * a proxied connection, which covers both "scheme://location" and
2837 * CONNECT ip:port.
2838 */
2839 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2840 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2841 txn->flags |= TX_USE_PX_CONN;
2842
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2843 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2844 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2845
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2846 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2847 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2848 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2849 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2850
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2851 /* 6: determine the transfer-length.
2852 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2853 * the presence of a message-body in a REQUEST and its transfer length
2854 * must be determined that way (in order of precedence) :
2855 * 1. The presence of a message-body in a request is signaled by the
2856 * inclusion of a Content-Length or Transfer-Encoding header field
2857 * in the request's header fields. When a request message contains
2858 * both a message-body of non-zero length and a method that does
2859 * not define any semantics for that request message-body, then an
2860 * origin server SHOULD either ignore the message-body or respond
2861 * with an appropriate error message (e.g., 413). A proxy or
2862 * gateway, when presented the same request, SHOULD either forward
2863 * the request inbound with the message- body or ignore the
2864 * message-body when determining a response.
2865 *
2866 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2867 * and the "chunked" transfer-coding (Section 6.2) is used, the
2868 * transfer-length is defined by the use of this transfer-coding.
2869 * If a Transfer-Encoding header field is present and the "chunked"
2870 * transfer-coding is not present, the transfer-length is defined
2871 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2872 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2873 * 3. If a Content-Length header field is present, its decimal value in
2874 * OCTETs represents both the entity-length and the transfer-length.
2875 * If a message is received with both a Transfer-Encoding header
2876 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2877 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2878 * 4. By the server closing the connection. (Closing the connection
2879 * cannot be used to indicate the end of a request body, since that
2880 * would leave no possibility for the server to send back a response.)
2881 *
2882 * Whenever a transfer-coding is applied to a message-body, the set of
2883 * transfer-codings MUST include "chunked", unless the message indicates
2884 * it is terminated by closing the connection. When the "chunked"
2885 * transfer-coding is used, it MUST be the last transfer-coding applied
2886 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2887 */
2888
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2889 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2890 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2891 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2892 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2893 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2894 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2895 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2896 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2897 /* bad transfer-encoding (chunked followed by something else) */
2898 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2899 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2900 break;
2901 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2902 }
2903
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2904 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2905 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2906 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2907 signed long long cl;
2908
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2909 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2910 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2911 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2912 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2913
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2914 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2915 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2916 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2917 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2918
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2919 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2920 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2921 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2922 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2923
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2924 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2925 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2926 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2927 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2928
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2929 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2930 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2931 }
2932
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2933 /* bodyless requests have a known length */
2934 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2935 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2936
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2937 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2938 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2939 req->analyse_exp = TICK_ETERNITY;
2940 return 1;
2941
2942 return_bad_req:
2943 /* We centralize bad requests processing here */
2944 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2945 /* we detected a parsing error. We want to archive this request
2946 * in the dedicated proxy area for later troubleshooting.
2947 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2948 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]2949 }
2950
2951 txn->req.msg_state = HTTP_MSG_ERROR;
2952 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2953 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2954
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2955 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2956 if (s->listener->counters)
2957 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2958
2959 return_prx_cond:
2960 if (!(s->flags & SN_ERR_MASK))
2961 s->flags |= SN_ERR_PRXCOND;
2962 if (!(s->flags & SN_FINST_MASK))
2963 s->flags |= SN_FINST_R;
2964
2965 req->analysers = 0;
2966 req->analyse_exp = TICK_ETERNITY;
2967 return 0;
2968}
2969
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2970
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2971/* This function prepares an applet to handle the stats. It can deal with the
2972 * "100-continue" expectation, check that admin rules are met for POST requests,
2973 * and program a response message if something was unexpected. It cannot fail
2974 * 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]2975 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2976 * s->target which is supposed to already point to the stats applet. The caller
2977 * is expected to have already assigned an appctx to the session.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2978 */
2979int http_handle_stats(struct session *s, struct channel *req)
2980{
2981 struct stats_admin_rule *stats_admin_rule;
2982 struct stream_interface *si = s->rep->prod;
2983 struct http_txn *txn = &s->txn;
2984 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2985 struct uri_auth *uri_auth = s->be->uri_auth;
2986 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2987 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2988
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2989 appctx = si_appctx(si);
2990 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
2991 appctx->st1 = appctx->st2 = 0;
2992 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
2993 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2994
2995 uri = msg->chn->buf->p + msg->sl.rq.u;
2996 lookup = uri + uri_auth->uri_len;
2997
2998 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
2999 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3000 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3001 break;
3002 }
3003 }
3004
3005 if (uri_auth->refresh) {
3006 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3007 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3008 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3009 break;
3010 }
3011 }
3012 }
3013
3014 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3015 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3016 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3017 break;
3018 }
3019 }
3020
3021 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3022 if (memcmp(h, ";st=", 4) == 0) {
3023 int i;
3024 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3025 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3026 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3027 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3028 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3029 break;
3030 }
3031 }
3032 break;
3033 }
3034 }
3035
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3036 appctx->ctx.stats.scope_str = 0;
3037 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3038 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3039 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3040 int itx = 0;
3041 const char *h2;
3042 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3043 const char *err;
3044
3045 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3046 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3047 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3048 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3049 itx++;
3050 h++;
3051 }
3052
3053 if (itx > STAT_SCOPE_TXT_MAXLEN)
3054 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3055 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3056
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3057 /* 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]3058 memcpy(scope_txt, h2, itx);
3059 scope_txt[itx] = '\0';
3060 err = invalid_char(scope_txt);
3061 if (err) {
3062 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3063 appctx->ctx.stats.scope_str = 0;
3064 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3065 }
3066 break;
3067 }
3068 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3069
3070 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3071 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3072 int ret = 1;
3073
3074 if (stats_admin_rule->cond) {
3075 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
3076 ret = acl_pass(ret);
3077 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3078 ret = !ret;
3079 }
3080
3081 if (ret) {
3082 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3083 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3084 break;
3085 }
3086 }
3087
3088 /* Was the status page requested with a POST ? */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3089 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3090 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3091 if (msg->msg_state < HTTP_MSG_100_SENT) {
3092 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3093 * send an HTTP/1.1 100 Continue intermediate response.
3094 */
3095 if (msg->flags & HTTP_MSGF_VER_11) {
3096 struct hdr_ctx ctx;
3097 ctx.idx = 0;
3098 /* Expect is allowed in 1.1, look for it */
3099 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
3100 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
3101 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
3102 }
3103 }
3104 msg->msg_state = HTTP_MSG_100_SENT;
3105 s->logs.tv_request = now; /* update the request timer to reflect full request */
3106 }
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3107 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3108 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3109 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3110 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3111 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3112 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3113 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3114 else {
3115 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3116 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3117 }
3118
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3119 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3120 return 1;
3121}
3122
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3123/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3124 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3125 */
3126static inline void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
3127{
3128#ifdef IP_TOS
3129 if (from.ss_family == AF_INET)
3130 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3131#endif
3132#ifdef IPV6_TCLASS
3133 if (from.ss_family == AF_INET6) {
3134 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
3135 /* v4-mapped addresses need IP_TOS */
3136 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3137 else
3138 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3139 }
3140#endif
3141}
3142
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3143/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3144 * transaction <txn>. Returns the first rule that prevents further processing
3145 * of the request (auth, deny, ...) or NULL if it executed all rules or stopped
3146 * on an allow. It may set the TX_CLDENY on txn->flags if it encounters a deny
3147 * rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3148 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3149static struct http_req_rule *
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3150http_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]3151{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3152 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3153 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3154 struct hdr_ctx ctx;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3155
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3156 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3157 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3158 continue;
3159
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3160 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3161 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3162 int ret;
3163
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3164 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]3165 ret = acl_pass(ret);
3166
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3167 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3168 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3169
3170 if (!ret) /* condition not matched */
3171 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3172 }
3173
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3174
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3175 switch (rule->action) {
3176 case HTTP_REQ_ACT_ALLOW:
3177 return NULL; /* "allow" rules are OK */
3178
3179 case HTTP_REQ_ACT_DENY:
3180 txn->flags |= TX_CLDENY;
3181 return rule;
3182
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3183 case HTTP_REQ_ACT_TARPIT:
3184 txn->flags |= TX_CLTARPIT;
3185 return rule;
3186
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3187 case HTTP_REQ_ACT_AUTH:
3188 return rule;
3189
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3190 case HTTP_REQ_ACT_REDIR:
3191 return rule;
3192
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3193 case HTTP_REQ_ACT_SET_NICE:
3194 s->task->nice = rule->arg.nice;
3195 break;
3196
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3197 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3198 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3199 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]3200 break;
3201
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3202 case HTTP_REQ_ACT_SET_MARK:
3203#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3204 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3205 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]3206#endif
3207 break;
3208
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3209 case HTTP_REQ_ACT_SET_LOGL:
3210 s->logs.level = rule->arg.loglevel;
3211 break;
3212
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3213 case HTTP_REQ_ACT_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3214 case HTTP_REQ_ACT_SET_HDR:
3215 ctx.idx = 0;
3216 /* remove all occurrences of the header */
3217 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3218 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3219 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3220 }
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3221 if (rule->action == HTTP_REQ_ACT_DEL_HDR)
3222 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3223 /* now fall through to header addition */
3224
3225 case HTTP_REQ_ACT_ADD_HDR:
3226 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3227 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3228 trash.len = rule->arg.hdr_add.name_len;
3229 trash.str[trash.len++] = ':';
3230 trash.str[trash.len++] = ' ';
3231 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3232 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3233 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3234 }
3235 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3236
3237 /* we reached the end of the rules, nothing to report */
Willy Tarreau418c1a02012-12-25 20:52:58 +0100[diff] [blame]3238 return NULL;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3239}
3240
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3241
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3242/* Executes the http-response rules <rules> for session <s>, proxy <px> and
3243 * transaction <txn>. Returns the first rule that prevents further processing
3244 * of the response (deny, ...) or NULL if it executed all rules or stopped
3245 * on an allow. It may set the TX_SVDENY on txn->flags if it encounters a deny
3246 * rule.
3247 */
3248static struct http_res_rule *
3249http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3250{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3251 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3252 struct http_res_rule *rule;
3253 struct hdr_ctx ctx;
3254
3255 list_for_each_entry(rule, rules, list) {
3256 if (rule->action >= HTTP_RES_ACT_MAX)
3257 continue;
3258
3259 /* check optional condition */
3260 if (rule->cond) {
3261 int ret;
3262
3263 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
3264 ret = acl_pass(ret);
3265
3266 if (rule->cond->pol == ACL_COND_UNLESS)
3267 ret = !ret;
3268
3269 if (!ret) /* condition not matched */
3270 continue;
3271 }
3272
3273
3274 switch (rule->action) {
3275 case HTTP_RES_ACT_ALLOW:
3276 return NULL; /* "allow" rules are OK */
3277
3278 case HTTP_RES_ACT_DENY:
3279 txn->flags |= TX_SVDENY;
3280 return rule;
3281
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3282 case HTTP_RES_ACT_SET_NICE:
3283 s->task->nice = rule->arg.nice;
3284 break;
3285
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3286 case HTTP_RES_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3287 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3288 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]3289 break;
3290
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3291 case HTTP_RES_ACT_SET_MARK:
3292#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3293 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3294 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]3295#endif
3296 break;
3297
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3298 case HTTP_RES_ACT_SET_LOGL:
3299 s->logs.level = rule->arg.loglevel;
3300 break;
3301
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3302 case HTTP_RES_ACT_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3303 case HTTP_RES_ACT_SET_HDR:
3304 ctx.idx = 0;
3305 /* remove all occurrences of the header */
3306 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3307 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3308 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3309 }
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3310 if (rule->action == HTTP_RES_ACT_DEL_HDR)
3311 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3312 /* now fall through to header addition */
3313
3314 case HTTP_RES_ACT_ADD_HDR:
3315 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3316 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3317 trash.len = rule->arg.hdr_add.name_len;
3318 trash.str[trash.len++] = ':';
3319 trash.str[trash.len++] = ' ';
3320 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3321 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3322 break;
3323 }
3324 }
3325
3326 /* we reached the end of the rules, nothing to report */
3327 return NULL;
3328}
3329
3330
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3331/* Perform an HTTP redirect based on the information in <rule>. The function
3332 * returns non-zero on success, or zero in case of a, irrecoverable error such
3333 * as too large a request to build a valid response.
3334 */
3335static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3336{
3337 struct http_msg *msg = &txn->req;
3338 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3339 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3340
3341 /* build redirect message */
3342 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3343 case 308:
3344 msg_fmt = HTTP_308;
3345 break;
3346 case 307:
3347 msg_fmt = HTTP_307;
3348 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3349 case 303:
3350 msg_fmt = HTTP_303;
3351 break;
3352 case 301:
3353 msg_fmt = HTTP_301;
3354 break;
3355 case 302:
3356 default:
3357 msg_fmt = HTTP_302;
3358 break;
3359 }
3360
3361 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3362 return 0;
3363
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3364 location = trash.str + trash.len;
3365
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3366 switch(rule->type) {
3367 case REDIRECT_TYPE_SCHEME: {
3368 const char *path;
3369 const char *host;
3370 struct hdr_ctx ctx;
3371 int pathlen;
3372 int hostlen;
3373
3374 host = "";
3375 hostlen = 0;
3376 ctx.idx = 0;
3377 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
3378 host = ctx.line + ctx.val;
3379 hostlen = ctx.vlen;
3380 }
3381
3382 path = http_get_path(txn);
3383 /* build message using path */
3384 if (path) {
3385 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3386 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3387 int qs = 0;
3388 while (qs < pathlen) {
3389 if (path[qs] == '?') {
3390 pathlen = qs;
3391 break;
3392 }
3393 qs++;
3394 }
3395 }
3396 } else {
3397 path = "/";
3398 pathlen = 1;
3399 }
3400
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3401 if (rule->rdr_str) { /* this is an old "redirect" rule */
3402 /* check if we can add scheme + "://" + host + path */
3403 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3404 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3405
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3406 /* add scheme */
3407 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3408 trash.len += rule->rdr_len;
3409 }
3410 else {
3411 /* add scheme with executing log format */
3412 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]3413
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3414 /* check if we can add scheme + "://" + host + path */
3415 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3416 return 0;
3417 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3418 /* add "://" */
3419 memcpy(trash.str + trash.len, "://", 3);
3420 trash.len += 3;
3421
3422 /* add host */
3423 memcpy(trash.str + trash.len, host, hostlen);
3424 trash.len += hostlen;
3425
3426 /* add path */
3427 memcpy(trash.str + trash.len, path, pathlen);
3428 trash.len += pathlen;
3429
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3430 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3431 if (trash.len && trash.str[trash.len - 1] != '/' &&
3432 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3433 if (trash.len > trash.size - 5)
3434 return 0;
3435 trash.str[trash.len] = '/';
3436 trash.len++;
3437 }
3438
3439 break;
3440 }
3441 case REDIRECT_TYPE_PREFIX: {
3442 const char *path;
3443 int pathlen;
3444
3445 path = http_get_path(txn);
3446 /* build message using path */
3447 if (path) {
3448 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3449 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3450 int qs = 0;
3451 while (qs < pathlen) {
3452 if (path[qs] == '?') {
3453 pathlen = qs;
3454 break;
3455 }
3456 qs++;
3457 }
3458 }
3459 } else {
3460 path = "/";
3461 pathlen = 1;
3462 }
3463
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3464 if (rule->rdr_str) { /* this is an old "redirect" rule */
3465 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3466 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3467
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3468 /* add prefix. Note that if prefix == "/", we don't want to
3469 * add anything, otherwise it makes it hard for the user to
3470 * configure a self-redirection.
3471 */
3472 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3473 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3474 trash.len += rule->rdr_len;
3475 }
3476 }
3477 else {
3478 /* add prefix with executing log format */
3479 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3480
3481 /* Check length */
3482 if (trash.len + pathlen > trash.size - 4)
3483 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3484 }
3485
3486 /* add path */
3487 memcpy(trash.str + trash.len, path, pathlen);
3488 trash.len += pathlen;
3489
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3490 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3491 if (trash.len && trash.str[trash.len - 1] != '/' &&
3492 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3493 if (trash.len > trash.size - 5)
3494 return 0;
3495 trash.str[trash.len] = '/';
3496 trash.len++;
3497 }
3498
3499 break;
3500 }
3501 case REDIRECT_TYPE_LOCATION:
3502 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3503 if (rule->rdr_str) { /* this is an old "redirect" rule */
3504 if (trash.len + rule->rdr_len > trash.size - 4)
3505 return 0;
3506
3507 /* add location */
3508 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3509 trash.len += rule->rdr_len;
3510 }
3511 else {
3512 /* add location with executing log format */
3513 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]3514
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3515 /* Check left length */
3516 if (trash.len > trash.size - 4)
3517 return 0;
3518 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3519 break;
3520 }
3521
3522 if (rule->cookie_len) {
3523 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3524 trash.len += 14;
3525 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3526 trash.len += rule->cookie_len;
3527 memcpy(trash.str + trash.len, "\r\n", 2);
3528 trash.len += 2;
3529 }
3530
3531 /* add end of headers and the keep-alive/close status.
3532 * We may choose to set keep-alive if the Location begins
3533 * with a slash, because the client will come back to the
3534 * same server.
3535 */
3536 txn->status = rule->code;
3537 /* let's log the request time */
3538 s->logs.tv_request = now;
3539
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3540 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3541 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3542 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3543 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3544 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3545 /* keep-alive possible */
3546 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3547 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3548 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3549 trash.len += 30;
3550 } else {
3551 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3552 trash.len += 24;
3553 }
3554 }
3555 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3556 trash.len += 4;
3557 bo_inject(txn->rsp.chn, trash.str, trash.len);
3558 /* "eat" the request */
3559 bi_fast_delete(txn->req.chn->buf, msg->sov);
3560 msg->sov = 0;
3561 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3562 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3563 txn->req.msg_state = HTTP_MSG_CLOSED;
3564 txn->rsp.msg_state = HTTP_MSG_DONE;
3565 } else {
3566 /* keep-alive not possible */
3567 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3568 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3569 trash.len += 29;
3570 } else {
3571 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3572 trash.len += 23;
3573 }
3574 stream_int_retnclose(txn->req.chn->prod, &trash);
3575 txn->req.chn->analysers = 0;
3576 }
3577
3578 if (!(s->flags & SN_ERR_MASK))
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3579 s->flags |= SN_ERR_LOCAL;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3580 if (!(s->flags & SN_FINST_MASK))
3581 s->flags |= SN_FINST_R;
3582
3583 return 1;
3584}
3585
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3586/* This stream analyser runs all HTTP request processing which is common to
3587 * frontends and backends, which means blocking ACLs, filters, connection-close,
3588 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3589 * 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]3590 * either needs more data or wants to immediately abort the request (eg: deny,
3591 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3592 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3593int 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]3594{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3595 struct http_txn *txn = &s->txn;
3596 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3597 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3598 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3599 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3600 struct cond_wordlist *wl;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3601
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3602 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3603 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3604 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3605 return 0;
3606 }
3607
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3608 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3609 req->analyse_exp = TICK_ETERNITY;
3610
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3611 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]3612 now_ms, __FUNCTION__,
3613 s,
3614 req,
3615 req->rex, req->wex,
3616 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3617 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3618 req->analysers);
3619
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3620 /* first check whether we have some ACLs set to block this request */
3621 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3622 int ret = acl_exec_cond(cond, px, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]3623
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3624 ret = acl_pass(ret);
3625 if (cond->pol == ACL_COND_UNLESS)
3626 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]3627
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3628 if (ret) {
3629 txn->status = 403;
3630 /* let's log the request time */
3631 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3632 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3633 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3634 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3635 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3636 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3637
Willy Tarreau5d5b5d82012-12-09 12:00:04 +0100[diff] [blame]3638 /* just in case we have some per-backend tracking */
3639 session_inc_be_http_req_ctr(s);
3640
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3641 /* evaluate http-request rules */
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3642 http_req_last_rule = http_req_get_intercept_rule(px, &px->http_req_rules, s, txn);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]3643
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3644 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3645 if (!http_req_last_rule) {
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3646 if (stats_check_uri(s->rep->prod, txn, px)) {
3647 s->target = &http_stats_applet.obj_type;
Willy Tarreau1fbe1c92013-12-01 09:35:41 +0100[diff] [blame]3648 if (unlikely(!stream_int_register_handler(s->rep->prod, objt_applet(s->target)))) {
3649 txn->status = 500;
3650 s->logs.tv_request = now;
3651 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3652
Willy Tarreau1fbe1c92013-12-01 09:35:41 +0100[diff] [blame]3653 if (!(s->flags & SN_ERR_MASK))
3654 s->flags |= SN_ERR_RESOURCE;
3655 goto return_prx_cond;
3656 }
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3657 /* parse the whole stats request and extract the relevant information */
3658 http_handle_stats(s, req);
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3659 http_req_last_rule = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, txn);
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3660 }
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3661 }
3662
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3663 /* only apply req{,i}{rep/deny/tarpit} if the request was not yet
3664 * blocked by an http-request rule.
3665 */
3666 if (!(txn->flags & (TX_CLDENY|TX_CLTARPIT)) && (px->req_exp != NULL)) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3667 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3668 goto return_bad_req;
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3669 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3670
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3671 /* return a 403 if either rule has blocked */
3672 if (txn->flags & (TX_CLDENY|TX_CLTARPIT)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3673 if (txn->flags & TX_CLDENY) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3674 txn->status = 403;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3675 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3676 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3677 session_inc_http_err_ctr(s);
Willy Tarreau687ba132013-11-16 10:13:35 +0100[diff] [blame]3678 s->fe->fe_counters.denied_req++;
3679 if (s->fe != s->be)
3680 s->be->be_counters.denied_req++;
3681 if (s->listener->counters)
3682 s->listener->counters->denied_req++;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3683 goto return_prx_cond;
3684 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3685
3686 /* When a connection is tarpitted, we use the tarpit timeout,
3687 * which may be the same as the connect timeout if unspecified.
3688 * If unset, then set it to zero because we really want it to
3689 * eventually expire. We build the tarpit as an analyser.
3690 */
3691 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3692 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3693 /* wipe the request out so that we can drop the connection early
3694 * if the client closes first.
3695 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3696 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3697 req->analysers = 0; /* remove switching rules etc... */
3698 req->analysers |= AN_REQ_HTTP_TARPIT;
3699 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3700 if (!req->analyse_exp)
3701 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3702 session_inc_http_err_ctr(s);
Willy Tarreau687ba132013-11-16 10:13:35 +0100[diff] [blame]3703 s->fe->fe_counters.denied_req++;
3704 if (s->fe != s->be)
3705 s->be->be_counters.denied_req++;
3706 if (s->listener->counters)
3707 s->listener->counters->denied_req++;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3708 return 1;
3709 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3710 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3711
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]3712 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3713 * only change if both the request and the config reference something else.
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]3714 * Option httpclose by itself sets tunnel mode where headers are mangled.
3715 * However, if another mode is set, it will affect it (eg: server-close/
3716 * keep-alive + httpclose = close). Note that we avoid to redo the same work
3717 * if FE and BE have the same settings (common). The method consists in
3718 * checking if options changed between the two calls (implying that either
3719 * one is non-null, or one of them is non-null and we are there for the first
3720 * time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3721 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3722
Willy Tarreau416ce612014-01-31 15:45:34 +0100[diff] [blame]3723 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]3724 ((s->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE))) {
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]3725 int tmp = TX_CON_WANT_KAL;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3726
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]3727 if (!((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
3728 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
3729 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
3730 tmp = TX_CON_WANT_TUN;
3731
3732 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
3733 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
3734 tmp = TX_CON_WANT_TUN;
3735 }
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]3736
3737 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]3738 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
3739 /* option httpclose + server_close => forceclose */
3740 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
3741 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
3742 tmp = TX_CON_WANT_CLO;
3743 else
3744 tmp = TX_CON_WANT_SCL;
3745 }
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]3746
3747 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
3748 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3749 tmp = TX_CON_WANT_CLO;
3750
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3751 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3752 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3753
Willy Tarreau416ce612014-01-31 15:45:34 +0100[diff] [blame]3754 if (!(txn->flags & TX_HDR_CONN_PRS) &&
3755 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3756 /* parse the Connection header and possibly clean it */
3757 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3758 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3759 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3760 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3761 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3762 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3763 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3764 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3765 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3766
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3767 /* check if client or config asks for explicit close in KAL/SCL */
3768 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3769 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3770 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3771 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3772 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3773 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3774 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3775 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3776
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3777 /* we can be blocked here because the request needs to be authenticated,
3778 * either to pass or to access stats.
3779 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3780 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_AUTH) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]3781 char *realm = http_req_last_rule->arg.auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3782
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3783 if (!realm)
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3784 realm = (objt_applet(s->target) == &http_stats_applet) ? STATS_DEFAULT_REALM : px->id;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3785
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3786 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, realm);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3787 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3788 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3789 /* on 401 we still count one error, because normal browsing
3790 * won't significantly increase the counter but brute force
3791 * attempts will.
3792 */
3793 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3794 goto return_prx_cond;
3795 }
3796
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3797 /* add request headers from the rule sets in the same order */
3798 list_for_each_entry(wl, &px->req_add, list) {
3799 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3800 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]3801 ret = acl_pass(ret);
3802 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3803 ret = !ret;
3804 if (!ret)
3805 continue;
3806 }
3807
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3808 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3809 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3810 }
3811
3812 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_REDIR) {
3813 if (!http_apply_redirect_rule(http_req_last_rule->arg.redir, s, txn))
3814 goto return_bad_req;
3815 req->analyse_exp = TICK_ETERNITY;
3816 return 1;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3817 }
3818
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3819 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3820 /* process the stats request now */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3821 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3822 s->fe->fe_counters.intercepted_req++;
3823
3824 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3825 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
3826 if (!(s->flags & SN_FINST_MASK))
3827 s->flags |= SN_FINST_R;
3828
3829 req->analyse_exp = TICK_ETERNITY;
Willy Tarreau51437d22013-12-29 00:43:40 +0100[diff] [blame]3830 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3831 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3832 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3833
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3834 /* check whether we have some ACLs set to redirect this request */
3835 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3836 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3837 int ret;
3838
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3839 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]3840 ret = acl_pass(ret);
3841 if (rule->cond->pol == ACL_COND_UNLESS)
3842 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3843 if (!ret)
3844 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3845 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3846 if (!http_apply_redirect_rule(rule, s, txn))
3847 goto return_bad_req;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3848
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3849 req->analyse_exp = TICK_ETERNITY;
3850 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3851 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3852
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3853 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3854 * If this happens, then the data will not come immediately, so we must
3855 * send all what we have without waiting. Note that due to the small gain
3856 * 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]3857 * 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]3858 * itself once used.
3859 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3860 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3861
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3862 /* that's OK for us now, let's move on to next analysers */
3863 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3864
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3865 return_bad_req:
3866 /* We centralize bad requests processing here */
3867 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3868 /* we detected a parsing error. We want to archive this request
3869 * in the dedicated proxy area for later troubleshooting.
3870 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3871 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]3872 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3873
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3874 txn->req.msg_state = HTTP_MSG_ERROR;
3875 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3876 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3877
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3878 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3879 if (s->listener->counters)
3880 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3881
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3882 return_prx_cond:
3883 if (!(s->flags & SN_ERR_MASK))
3884 s->flags |= SN_ERR_PRXCOND;
3885 if (!(s->flags & SN_FINST_MASK))
3886 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3887
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3888 req->analysers = 0;
3889 req->analyse_exp = TICK_ETERNITY;
3890 return 0;
3891}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3892
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3893/* This function performs all the processing enabled for the current request.
3894 * It returns 1 if the processing can continue on next analysers, or zero if it
3895 * needs more data, encounters an error, or wants to immediately abort the
3896 * request. It relies on buffers flags, and updates s->req->analysers.
3897 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3898int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3899{
3900 struct http_txn *txn = &s->txn;
3901 struct http_msg *msg = &txn->req;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3902 struct connection *cli_conn = objt_conn(req->prod->end);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3903
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3904 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3905 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3906 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3907 return 0;
3908 }
3909
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3910 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]3911 now_ms, __FUNCTION__,
3912 s,
3913 req,
3914 req->rex, req->wex,
3915 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3916 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3917 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3918
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3919 if (s->fe->comp || s->be->comp)
3920 select_compression_request_header(s, req->buf);
3921
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3922 /*
3923 * Right now, we know that we have processed the entire headers
3924 * and that unwanted requests have been filtered out. We can do
3925 * whatever we want with the remaining request. Also, now we
3926 * may have separate values for ->fe, ->be.
3927 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3928
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3929 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3930 * If HTTP PROXY is set we simply get remote server address parsing
3931 * incoming request. Note that this requires that a connection is
3932 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3933 */
3934 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3935 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]3936 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3937
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]3938 /* Note that for now we don't reuse existing proxy connections */
3939 if (unlikely((conn = si_alloc_conn(req->cons, 0)) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3940 txn->req.msg_state = HTTP_MSG_ERROR;
3941 txn->status = 500;
3942 req->analysers = 0;
3943 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
3944
3945 if (!(s->flags & SN_ERR_MASK))
3946 s->flags |= SN_ERR_RESOURCE;
3947 if (!(s->flags & SN_FINST_MASK))
3948 s->flags |= SN_FINST_R;
3949
3950 return 0;
3951 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]3952
3953 path = http_get_path(txn);
3954 url2sa(req->buf->p + msg->sl.rq.u,
3955 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]3956 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]3957 /* if the path was found, we have to remove everything between
3958 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
3959 * found, we need to replace from req->buf->p + msg->sl.rq.u for
3960 * u_l characters by a single "/".
3961 */
3962 if (path) {
3963 char *cur_ptr = req->buf->p;
3964 char *cur_end = cur_ptr + txn->req.sl.rq.l;
3965 int delta;
3966
3967 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
3968 http_msg_move_end(&txn->req, delta);
3969 cur_end += delta;
3970 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
3971 goto return_bad_req;
3972 }
3973 else {
3974 char *cur_ptr = req->buf->p;
3975 char *cur_end = cur_ptr + txn->req.sl.rq.l;
3976 int delta;
3977
3978 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
3979 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
3980 http_msg_move_end(&txn->req, delta);
3981 cur_end += delta;
3982 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
3983 goto return_bad_req;
3984 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3985 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3986
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3987 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3988 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3989 * Note that doing so might move headers in the request, but
3990 * the fields will stay coherent and the URI will not move.
3991 * This should only be performed in the backend.
3992 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3993 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3994 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3995 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3996
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3997 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3998 * 8: the appsession cookie was looked up very early in 1.2,
3999 * so let's do the same now.
4000 */
4001
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4002 /* It needs to look into the URI unless persistence must be ignored */
4003 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4004 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]4005 }
4006
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4007 /* add unique-id if "header-unique-id" is specified */
4008
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4009 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
4010 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4011 goto return_bad_req;
4012 s->unique_id[0] = '\0';
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4013 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4014 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4015
4016 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4017 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
4018 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4019 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4020 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]4021 goto return_bad_req;
4022 }
4023
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4024 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4025 * 9: add X-Forwarded-For if either the frontend or the backend
4026 * asks for it.
4027 */
4028 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4029 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4030 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]4031 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
4032 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]4033 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4034 /* The header is set to be added only if none is present
4035 * and we found it, so don't do anything.
4036 */
4037 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4038 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4039 /* Add an X-Forwarded-For header unless the source IP is
4040 * in the 'except' network range.
4041 */
4042 if ((!s->fe->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4043 (((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]4044 != s->fe->except_net.s_addr) &&
4045 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4046 (((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]4047 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4048 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4049 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4050 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4051
4052 /* Note: we rely on the backend to get the header name to be used for
4053 * x-forwarded-for, because the header is really meant for the backends.
4054 * However, if the backend did not specify any option, we have to rely
4055 * on the frontend's header name.
4056 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4057 if (s->be->fwdfor_hdr_len) {
4058 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4059 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4060 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4061 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4062 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4063 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4064 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]4065
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4066 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]4067 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4068 }
4069 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4070 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4071 /* FIXME: for the sake of completeness, we should also support
4072 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4073 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4074 int len;
4075 char pn[INET6_ADDRSTRLEN];
4076 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4077 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4078 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4079
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4080 /* Note: we rely on the backend to get the header name to be used for
4081 * x-forwarded-for, because the header is really meant for the backends.
4082 * However, if the backend did not specify any option, we have to rely
4083 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4084 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4085 if (s->be->fwdfor_hdr_len) {
4086 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4087 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4088 } else {
4089 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4090 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4091 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4092 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4093
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4094 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]4095 goto return_bad_req;
4096 }
4097 }
4098
4099 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4100 * 10: add X-Original-To if either the frontend or the backend
4101 * asks for it.
4102 */
4103 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
4104
4105 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4106 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4107 /* Add an X-Original-To header unless the destination IP is
4108 * in the 'except' network range.
4109 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4110 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4111
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4112 if (cli_conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4113 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4114 (((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]4115 != s->fe->except_to.s_addr) &&
4116 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4117 (((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]4118 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4119 int len;
4120 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4121 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4122
4123 /* Note: we rely on the backend to get the header name to be used for
4124 * x-original-to, because the header is really meant for the backends.
4125 * However, if the backend did not specify any option, we have to rely
4126 * on the frontend's header name.
4127 */
4128 if (s->be->orgto_hdr_len) {
4129 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4130 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4131 } else {
4132 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4133 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4134 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4135 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]4136
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4137 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]4138 goto return_bad_req;
4139 }
4140 }
4141 }
4142
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4143 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4144 * If an "Upgrade" token is found, the header is left untouched in order not to have
4145 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4146 * "Upgrade" is present in the Connection header.
4147 */
4148 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4149 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4150 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4151 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4152 unsigned int want_flags = 0;
4153
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4154 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4155 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4156 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4157 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4158 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4159 want_flags |= TX_CON_CLO_SET;
4160 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4161 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4162 ((s->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
4163 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4164 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4165 want_flags |= TX_CON_KAL_SET;
4166 }
4167
4168 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4169 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4170 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4171
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4172
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4173 /* If we have no server assigned yet and we're balancing on url_param
4174 * with a POST request, we may be interested in checking the body for
4175 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4176 */
4177 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
4178 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4179 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4180 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4181 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4182 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4183
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4184 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4185 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4186#ifdef TCP_QUICKACK
4187 /* We expect some data from the client. Unless we know for sure
4188 * we already have a full request, we have to re-enable quick-ack
4189 * in case we previously disabled it, otherwise we might cause
4190 * the client to delay further data.
4191 */
4192 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4193 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4194 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4195 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4196 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4197#endif
4198 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4199
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4200 /*************************************************************
4201 * OK, that's finished for the headers. We have done what we *
4202 * could. Let's switch to the DATA state. *
4203 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4204 req->analyse_exp = TICK_ETERNITY;
4205 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4206
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4207 /* if the server closes the connection, we want to immediately react
4208 * and close the socket to save packets and syscalls.
4209 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4210 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
4211 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4212
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4213 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4214 /* OK let's go on with the BODY now */
4215 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4216
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4217 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4218 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4219 /* we detected a parsing error. We want to archive this request
4220 * in the dedicated proxy area for later troubleshooting.
4221 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4222 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]4223 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4224
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4225 txn->req.msg_state = HTTP_MSG_ERROR;
4226 txn->status = 400;
4227 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4228 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4229
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4230 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4231 if (s->listener->counters)
4232 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4233
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4234 if (!(s->flags & SN_ERR_MASK))
4235 s->flags |= SN_ERR_PRXCOND;
4236 if (!(s->flags & SN_FINST_MASK))
4237 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4238 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4239}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4240
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4241/* This function is an analyser which processes the HTTP tarpit. It always
4242 * returns zero, at the beginning because it prevents any other processing
4243 * from occurring, and at the end because it terminates the request.
4244 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4245int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4246{
4247 struct http_txn *txn = &s->txn;
4248
4249 /* This connection is being tarpitted. The CLIENT side has
4250 * already set the connect expiration date to the right
4251 * timeout. We just have to check that the client is still
4252 * there and that the timeout has not expired.
4253 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4254 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4255 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4256 !tick_is_expired(req->analyse_exp, now_ms))
4257 return 0;
4258
4259 /* We will set the queue timer to the time spent, just for
4260 * logging purposes. We fake a 500 server error, so that the
4261 * attacker will not suspect his connection has been tarpitted.
4262 * It will not cause trouble to the logs because we can exclude
4263 * the tarpitted connections by filtering on the 'PT' status flags.
4264 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4265 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4266
4267 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4268 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4269 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4270
4271 req->analysers = 0;
4272 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4273
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4274 if (!(s->flags & SN_ERR_MASK))
4275 s->flags |= SN_ERR_PRXCOND;
4276 if (!(s->flags & SN_FINST_MASK))
4277 s->flags |= SN_FINST_T;
4278 return 0;
4279}
4280
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4281/* This function is an analyser which waits for the HTTP request body. It waits
4282 * for either the buffer to be full, or the full advertised contents to have
4283 * reached the buffer. It must only be called after the standard HTTP request
4284 * processing has occurred, because it expects the request to be parsed and will
4285 * look for the Expect header. It may send a 100-Continue interim response. It
4286 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4287 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4288 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4289 */
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4290int http_wait_for_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4291{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4292 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4293 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4294
4295 /* We have to parse the HTTP request body to find any required data.
4296 * "balance url_param check_post" should have been the only way to get
4297 * into this. We were brought here after HTTP header analysis, so all
4298 * related structures are ready.
4299 */
4300
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame^]4301 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4302 /* This is the first call */
4303 if (msg->msg_state < HTTP_MSG_BODY)
4304 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4305
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame^]4306 if (msg->msg_state < HTTP_MSG_100_SENT) {
4307 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4308 * send an HTTP/1.1 100 Continue intermediate response.
4309 */
4310 if (msg->flags & HTTP_MSGF_VER_11) {
4311 struct hdr_ctx ctx;
4312 ctx.idx = 0;
4313 /* Expect is allowed in 1.1, look for it */
4314 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4315 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
4316 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
4317 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4318 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame^]4319 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4320 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4321
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4322 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4323 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4324 * is still null. We must save the body in msg->next because it
4325 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4326 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4327 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4328
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4329 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4330 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4331 else
4332 msg->msg_state = HTTP_MSG_DATA;
4333 }
4334
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame^]4335 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4336 /* We're in content-length mode, we just have to wait for enough data. */
4337 if (req->buf->i - msg->sov < msg->body_len)
4338 goto missing_data;
4339
4340 /* OK we have everything we need now */
4341 goto http_end;
4342 }
4343
4344 /* OK here we're parsing a chunked-encoded message */
4345
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4346 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4347 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4348 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4349 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4350 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4351 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4352
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4353 if (!ret)
4354 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4355 else if (ret < 0) {
4356 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4357 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4358 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4359 }
4360
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4361 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4362 * 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]4363 * least a whole chunk or the whole content length bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4364 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame^]4365 if (msg->msg_state == HTTP_MSG_TRAILERS)
4366 goto http_end;
4367
Willy Tarreau226071e2014-04-10 11:55:45 +0200[diff] [blame]4368 if (req->buf->i - msg->sov >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4369 goto http_end;
4370
4371 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4372 /* we get here if we need to wait for more data. If the buffer is full,
4373 * we have the maximum we can expect.
4374 */
4375 if (buffer_full(req->buf, global.tune.maxrewrite))
4376 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4377
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4378 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4379 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4380 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4381
4382 if (!(s->flags & SN_ERR_MASK))
4383 s->flags |= SN_ERR_CLITO;
4384 if (!(s->flags & SN_FINST_MASK))
4385 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4386 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4387 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4388
4389 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4390 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4391 /* Not enough data. We'll re-use the http-request
4392 * timeout here. Ideally, we should set the timeout
4393 * relative to the accept() date. We just set the
4394 * request timeout once at the beginning of the
4395 * request.
4396 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4397 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4398 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4399 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4400 return 0;
4401 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4402
4403 http_end:
4404 /* The situation will not evolve, so let's give up on the analysis. */
4405 s->logs.tv_request = now; /* update the request timer to reflect full request */
4406 req->analysers &= ~an_bit;
4407 req->analyse_exp = TICK_ETERNITY;
4408 return 1;
4409
4410 return_bad_req: /* let's centralize all bad requests */
4411 txn->req.msg_state = HTTP_MSG_ERROR;
4412 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4413 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4414
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4415 if (!(s->flags & SN_ERR_MASK))
4416 s->flags |= SN_ERR_PRXCOND;
4417 if (!(s->flags & SN_FINST_MASK))
4418 s->flags |= SN_FINST_R;
4419
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4420 return_err_msg:
4421 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4422 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4423 if (s->listener->counters)
4424 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4425 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4426}
4427
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4428/* send a server's name with an outgoing request over an established connection.
4429 * Note: this function is designed to be called once the request has been scheduled
4430 * for being forwarded. This is the reason why it rewinds the buffer before
4431 * proceeding.
4432 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4433int 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]4434
4435 struct hdr_ctx ctx;
4436
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4437 char *hdr_name = be->server_id_hdr_name;
4438 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4439 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4440 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4441 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4442
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4443 ctx.idx = 0;
4444
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4445 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4446 if (old_o) {
4447 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4448 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4449 }
4450
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4451 old_i = chn->buf->i;
4452 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]4453 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4454 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4455 }
4456
4457 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4458 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4459 memcpy(hdr_val, hdr_name, hdr_name_len);
4460 hdr_val += hdr_name_len;
4461 *hdr_val++ = ':';
4462 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4463 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4464 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]4465
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4466 if (old_o) {
4467 /* If this was a forwarded request, we must readjust the amount of
4468 * data to be forwarded in order to take into account the size
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4469 * variations. Note that if the request was already scheduled for
4470 * forwarding, it had its req->sol pointing to the body, which
4471 * must then be updated too.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4472 */
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4473 txn->req.sol += chn->buf->i - old_i;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4474 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4475 }
4476
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4477 return 0;
4478}
4479
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4480/* Terminate current transaction and prepare a new one. This is very tricky
4481 * right now but it works.
4482 */
4483void http_end_txn_clean_session(struct session *s)
4484{
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4485 int prev_status = s->txn.status;
4486
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4487 /* FIXME: We need a more portable way of releasing a backend's and a
4488 * server's connections. We need a safer way to reinitialize buffer
4489 * flags. We also need a more accurate method for computing per-request
4490 * data.
4491 */
4492 http_silent_debug(__LINE__, s);
4493
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4494 /* unless we're doing keep-alive, we want to quickly close the connection
4495 * to the server.
4496 */
4497 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4498 !si_conn_ready(s->req->cons)) {
4499 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4500 si_shutr(s->req->cons);
4501 si_shutw(s->req->cons);
4502 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4503
4504 http_silent_debug(__LINE__, s);
4505
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4506 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4507 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4508 if (unlikely(s->srv_conn))
4509 sess_change_server(s, NULL);
4510 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4511
4512 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4513 session_process_counters(s);
Willy Tarreauf3338342014-01-28 21:40:28 +0100[diff] [blame]4514 session_stop_content_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4515
4516 if (s->txn.status) {
4517 int n;
4518
4519 n = s->txn.status / 100;
4520 if (n < 1 || n > 5)
4521 n = 0;
4522
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4523 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4524 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4525 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4526 s->fe->fe_counters.p.http.comp_rsp++;
4527 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4528 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4529 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4530 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4531 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4532 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4533 s->be->be_counters.p.http.comp_rsp++;
4534 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4535 }
4536
4537 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4538 s->logs.bytes_in -= s->req->buf->i;
4539 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4540
4541 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4542 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4543 !(s->flags & SN_MONITOR) &&
4544 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4545 s->do_log(s);
4546 }
4547
4548 s->logs.accept_date = date; /* user-visible date for logging */
4549 s->logs.tv_accept = now; /* corrected date for internal use */
4550 tv_zero(&s->logs.tv_request);
4551 s->logs.t_queue = -1;
4552 s->logs.t_connect = -1;
4553 s->logs.t_data = -1;
4554 s->logs.t_close = 0;
4555 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4556 s->logs.srv_queue_size = 0; /* we will get this number soon */
4557
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4558 s->logs.bytes_in = s->req->total = s->req->buf->i;
4559 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4560
4561 if (s->pend_pos)
4562 pendconn_free(s->pend_pos);
4563
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4564 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4565 if (s->flags & SN_CURR_SESS) {
4566 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4567 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4568 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4569 if (may_dequeue_tasks(objt_server(s->target), s->be))
4570 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4571 }
4572
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4573 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4574
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4575 /* only release our endpoint if we don't intend to reuse the
4576 * connection.
4577 */
4578 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4579 !si_conn_ready(s->req->cons)) {
4580 si_release_endpoint(s->req->cons);
4581 }
4582
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4583 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4584 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4585 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4586 s->req->cons->exp = TICK_ETERNITY;
Willy Tarreauc9200962013-12-31 23:03:09 +0100[diff] [blame]4587 s->req->cons->flags &= SI_FL_DONT_WAKE; /* we're in the context of process_session */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4588 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4589 s->rep->flags &= ~(CF_SHUTR|CF_SHUTR_NOW|CF_READ_ATTACHED|CF_READ_ERROR|CF_READ_NOEXP|CF_STREAMER|CF_STREAMER_FAST|CF_WRITE_PARTIAL|CF_NEVER_WAIT);
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4590 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]4591 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE|SN_SRV_REUSED);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4592
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4593 s->txn.meth = 0;
4594 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4595 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4596
4597 if (prev_status == 401 || prev_status == 407) {
4598 /* In HTTP keep-alive mode, if we receive a 401, we still have
4599 * a chance of being able to send the visitor again to the same
4600 * server over the same connection. This is required by some
4601 * broken protocols such as NTLM, and anyway whenever there is
4602 * an opportunity for sending the challenge to the proper place,
4603 * it's better to do it (at least it helps with debugging).
4604 */
4605 s->txn.flags |= TX_PREFER_LAST;
4606 }
4607
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4608 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4609 s->req->cons->flags |= SI_FL_INDEP_STR;
4610
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4611 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4612 s->req->flags |= CF_NEVER_WAIT;
4613 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4614 }
4615
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4616 /* if the request buffer is not empty, it means we're
4617 * about to process another request, so send pending
4618 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4619 * Just don't do this if the buffer is close to be full,
4620 * because the request will wait for it to flush a little
4621 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4622 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4623 if (s->req->buf->i) {
4624 if (s->rep->buf->o &&
4625 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4626 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]4627 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4628 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4629
4630 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4631 channel_auto_read(s->req);
4632 channel_auto_close(s->req);
4633 channel_auto_read(s->rep);
4634 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4635
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]4636 /* we're in keep-alive with an idle connection, monitor it */
4637 si_idle_conn(s->req->cons);
4638
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4639 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4640 s->rep->analysers = 0;
4641
4642 http_silent_debug(__LINE__, s);
4643}
4644
4645
4646/* This function updates the request state machine according to the response
4647 * state machine and buffer flags. It returns 1 if it changes anything (flag
4648 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4649 * it is only used to find when a request/response couple is complete. Both
4650 * this function and its equivalent should loop until both return zero. It
4651 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4652 */
4653int http_sync_req_state(struct session *s)
4654{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4655 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4656 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4657 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4658 unsigned int old_state = txn->req.msg_state;
4659
4660 http_silent_debug(__LINE__, s);
4661 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4662 return 0;
4663
4664 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4665 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4666 * We can shut the read side unless we want to abort_on_close,
4667 * or we have a POST request. The issue with POST requests is
4668 * that some browsers still send a CRLF after the request, and
4669 * this CRLF must be read so that it does not remain in the kernel
4670 * buffers, otherwise a close could cause an RST on some systems
4671 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4672 * Note that if we're using keep-alive on the client side, we'd
4673 * rather poll now and keep the polling enabled for the whole
4674 * session's life than enabling/disabling it between each
4675 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4676 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4677 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
4678 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
4679 !(s->be->options & PR_O_ABRT_CLOSE) &&
4680 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4681 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4682
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4683 /* if the server closes the connection, we want to immediately react
4684 * and close the socket to save packets and syscalls.
4685 */
4686 chn->cons->flags |= SI_FL_NOHALF;
4687
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4688 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4689 goto wait_other_side;
4690
4691 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4692 /* The server has not finished to respond, so we
4693 * don't want to move in order not to upset it.
4694 */
4695 goto wait_other_side;
4696 }
4697
4698 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4699 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4700 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4701 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4702 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4703 goto wait_other_side;
4704 }
4705
4706 /* When we get here, it means that both the request and the
4707 * response have finished receiving. Depending on the connection
4708 * mode, we'll have to wait for the last bytes to leave in either
4709 * direction, and sometimes for a close to be effective.
4710 */
4711
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4712 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4713 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4714 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4715 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4716 }
4717 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4718 /* Option forceclose is set, or either side wants to close,
4719 * let's enforce it now that we're not expecting any new
4720 * data to come. The caller knows the session is complete
4721 * once both states are CLOSED.
4722 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4723 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4724 channel_shutr_now(chn);
4725 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4726 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4727 }
4728 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4729 /* The last possible modes are keep-alive and tunnel. Tunnel mode
4730 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4731 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4732 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
4733 channel_auto_read(chn);
4734 txn->req.msg_state = HTTP_MSG_TUNNEL;
4735 chn->flags |= CF_NEVER_WAIT;
4736 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4737 }
4738
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4739 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4740 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4741 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4742
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4743 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4744 txn->req.msg_state = HTTP_MSG_CLOSING;
4745 goto http_msg_closing;
4746 }
4747 else {
4748 txn->req.msg_state = HTTP_MSG_CLOSED;
4749 goto http_msg_closed;
4750 }
4751 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4752 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4753 }
4754
4755 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4756 http_msg_closing:
4757 /* nothing else to forward, just waiting for the output buffer
4758 * to be empty and for the shutw_now to take effect.
4759 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4760 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4761 txn->req.msg_state = HTTP_MSG_CLOSED;
4762 goto http_msg_closed;
4763 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4764 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4765 txn->req.msg_state = HTTP_MSG_ERROR;
4766 goto wait_other_side;
4767 }
4768 }
4769
4770 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4771 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4772 /* see above in MSG_DONE why we only do this in these states */
4773 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
4774 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
4775 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]4776 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4777 goto wait_other_side;
4778 }
4779
4780 wait_other_side:
4781 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4782 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4783}
4784
4785
4786/* This function updates the response state machine according to the request
4787 * state machine and buffer flags. It returns 1 if it changes anything (flag
4788 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4789 * it is only used to find when a request/response couple is complete. Both
4790 * this function and its equivalent should loop until both return zero. It
4791 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4792 */
4793int http_sync_res_state(struct session *s)
4794{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4795 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4796 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4797 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4798 unsigned int old_state = txn->rsp.msg_state;
4799
4800 http_silent_debug(__LINE__, s);
4801 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4802 return 0;
4803
4804 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4805 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4806 * still monitor the server connection for a possible close
4807 * while the request is being uploaded, so we don't disable
4808 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4809 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4810 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4811
4812 if (txn->req.msg_state == HTTP_MSG_ERROR)
4813 goto wait_other_side;
4814
4815 if (txn->req.msg_state < HTTP_MSG_DONE) {
4816 /* The client seems to still be sending data, probably
4817 * because we got an error response during an upload.
4818 * We have the choice of either breaking the connection
4819 * or letting it pass through. Let's do the later.
4820 */
4821 goto wait_other_side;
4822 }
4823
4824 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4825 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4826 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4827 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4828 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4829 goto wait_other_side;
4830 }
4831
4832 /* When we get here, it means that both the request and the
4833 * response have finished receiving. Depending on the connection
4834 * mode, we'll have to wait for the last bytes to leave in either
4835 * direction, and sometimes for a close to be effective.
4836 */
4837
4838 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4839 /* Server-close mode : shut read and wait for the request
4840 * side to close its output buffer. The caller will detect
4841 * when we're in DONE and the other is in CLOSED and will
4842 * catch that for the final cleanup.
4843 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4844 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4845 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4846 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4847 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4848 /* Option forceclose is set, or either side wants to close,
4849 * let's enforce it now that we're not expecting any new
4850 * data to come. The caller knows the session is complete
4851 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4852 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4853 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4854 channel_shutr_now(chn);
4855 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4856 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4857 }
4858 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4859 /* The last possible modes are keep-alive and tunnel. Tunnel will
4860 * need to forward remaining data. Keep-alive will need to monitor
4861 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4862 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4863 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4864 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4865 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
4866 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4867 }
4868
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4869 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4870 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4871 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4872 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4873 goto http_msg_closing;
4874 }
4875 else {
4876 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4877 goto http_msg_closed;
4878 }
4879 }
4880 goto wait_other_side;
4881 }
4882
4883 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4884 http_msg_closing:
4885 /* nothing else to forward, just waiting for the output buffer
4886 * to be empty and for the shutw_now to take effect.
4887 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4888 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4889 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4890 goto http_msg_closed;
4891 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4892 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4893 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4894 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4895 if (objt_server(s->target))
4896 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4897 goto wait_other_side;
4898 }
4899 }
4900
4901 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4902 http_msg_closed:
4903 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4904 bi_erase(chn);
4905 channel_auto_close(chn);
4906 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4907 goto wait_other_side;
4908 }
4909
4910 wait_other_side:
4911 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4912 /* We force the response to leave immediately if we're waiting for the
4913 * other side, since there is no pending shutdown to push it out.
4914 */
4915 if (!channel_is_empty(chn))
4916 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4917 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4918}
4919
4920
4921/* Resync the request and response state machines. Return 1 if either state
4922 * changes.
4923 */
4924int http_resync_states(struct session *s)
4925{
4926 struct http_txn *txn = &s->txn;
4927 int old_req_state = txn->req.msg_state;
4928 int old_res_state = txn->rsp.msg_state;
4929
4930 http_silent_debug(__LINE__, s);
4931 http_sync_req_state(s);
4932 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4933 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4934 if (!http_sync_res_state(s))
4935 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4936 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4937 if (!http_sync_req_state(s))
4938 break;
4939 }
4940 http_silent_debug(__LINE__, s);
4941 /* OK, both state machines agree on a compatible state.
4942 * There are a few cases we're interested in :
4943 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4944 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4945 * directions, so let's simply disable both analysers.
4946 * - HTTP_MSG_CLOSED on the response only means we must abort the
4947 * request.
4948 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4949 * with server-close mode means we've completed one request and we
4950 * must re-initialize the server connection.
4951 */
4952
4953 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4954 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4955 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4956 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4957 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4958 channel_auto_close(s->req);
4959 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4960 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4961 channel_auto_close(s->rep);
4962 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4963 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4964 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
4965 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4966 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4967 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4968 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4969 channel_auto_close(s->rep);
4970 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4971 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4972 channel_abort(s->req);
4973 channel_auto_close(s->req);
4974 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4975 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4976 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4977 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
4978 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4979 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4980 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4981 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4982 /* server-close/keep-alive: terminate this transaction,
4983 * possibly killing the server connection and reinitialize
4984 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4985 */
4986 http_end_txn_clean_session(s);
4987 }
4988
4989 http_silent_debug(__LINE__, s);
4990 return txn->req.msg_state != old_req_state ||
4991 txn->rsp.msg_state != old_res_state;
4992}
4993
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4994/* This function is an analyser which forwards request body (including chunk
4995 * sizes if any). It is called as soon as we must forward, even if we forward
4996 * zero byte. The only situation where it must not be called is when we're in
4997 * tunnel mode and we want to forward till the close. It's used both to forward
4998 * remaining data and to resync after end of body. It expects the msg_state to
4999 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5000 * 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]5001 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5002 * bytes of pending data + the headers if not already done (between sol and sov).
5003 * It eventually adjusts sol to match sov after the data in between have been sent.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5004 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5005int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5006{
5007 struct http_txn *txn = &s->txn;
5008 struct http_msg *msg = &s->txn.req;
5009
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5010 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5011 return 0;
5012
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5013 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]5014 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5015 /* Output closed while we were sending data. We must abort and
5016 * wake the other side up.
5017 */
5018 msg->msg_state = HTTP_MSG_ERROR;
5019 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5020 return 1;
5021 }
5022
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5023 /* Some post-connect processing might want us to refrain from starting to
5024 * forward data. Currently, the only reason for this is "balance url_param"
5025 * whichs need to parse/process the request after we've enabled forwarding.
5026 */
5027 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
5028 if (!(s->rep->flags & CF_READ_ATTACHED)) {
5029 channel_auto_connect(req);
5030 goto missing_data;
5031 }
5032 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5033 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5034
5035 /* Note that we don't have to send 100-continue back because we don't
5036 * need the data to complete our job, and it's up to the server to
5037 * decide whether to return 100, 417 or anything else in return of
5038 * an "Expect: 100-continue" header.
5039 */
5040
5041 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5042 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5043 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5044 * is still null. We must save the body in msg->next because it
5045 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5046 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]5047 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5048
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5049 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5050 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5051 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5052 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5053 }
5054
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5055 /* in most states, we should abort in case of early close */
5056 channel_auto_close(req);
5057
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5058 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5059 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5060
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5061 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5062 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5063 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]5064 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5065 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5066 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5067 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5068 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5069 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5070
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5071 if (msg->msg_state == HTTP_MSG_DATA) {
5072 /* must still forward */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5073 if (req->to_forward) {
5074 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5075 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5076 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5077
5078 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5079 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5080 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5081 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5082 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5083 }
5084 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5085 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5086 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5087 * TRAILERS state.
5088 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5089 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5090
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5091 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5092 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5093 else if (ret < 0) {
5094 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5095 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5096 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]5097 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5098 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5099 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5100 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5101 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5102 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5103 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5104
5105 if (ret == 0)
5106 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5107 else if (ret < 0) {
5108 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5109 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5110 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]5111 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5112 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5113 /* we're in MSG_CHUNK_SIZE now */
5114 }
5115 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5116 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5117
5118 if (ret == 0)
5119 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5120 else if (ret < 0) {
5121 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5122 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5123 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]5124 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5125 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5126 /* we're in HTTP_MSG_DONE now */
5127 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5128 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5129 int old_state = msg->msg_state;
5130
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5131 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5132 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5133 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5134 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5135 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5136 if (http_resync_states(s)) {
5137 /* some state changes occurred, maybe the analyser
5138 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5139 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5140 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5141 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5142 /* request errors are most likely due to
5143 * the server aborting the transfer.
5144 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5145 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5146 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5147 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5148 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5149 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5150 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5151 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5152 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5153
5154 /* If "option abortonclose" is set on the backend, we
5155 * want to monitor the client's connection and forward
5156 * any shutdown notification to the server, which will
5157 * decide whether to close or to go on processing the
5158 * request.
5159 */
5160 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5161 channel_auto_read(req);
5162 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5163 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5164 else if (s->txn.meth == HTTP_METH_POST) {
5165 /* POST requests may require to read extra CRLF
5166 * sent by broken browsers and which could cause
5167 * an RST to be sent upon close on some systems
5168 * (eg: Linux).
5169 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5170 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5171 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5172
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5173 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5174 }
5175 }
5176
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5177 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5178 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5179 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5180 if (!(s->flags & SN_ERR_MASK))
5181 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5182 if (!(s->flags & SN_FINST_MASK)) {
5183 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5184 s->flags |= SN_FINST_H;
5185 else
5186 s->flags |= SN_FINST_D;
5187 }
5188
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5189 s->fe->fe_counters.cli_aborts++;
5190 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5191 if (objt_server(s->target))
5192 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5193
5194 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5195 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5196
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5197 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5198 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5199 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5200
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5201 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5202 * 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]5203 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5204 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5205 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5206
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5207 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5208 * 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]5209 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5210 * modes are already handled by the stream sock layer. We must not do
5211 * this in content-length mode because it could present the MSG_MORE
5212 * flag with the last block of forwarded data, which would cause an
5213 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5214 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5215 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5216 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5217
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5218 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5219 return 0;
5220
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5221 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5222 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5223 if (s->listener->counters)
5224 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5225 return_bad_req_stats_ok:
5226 txn->req.msg_state = HTTP_MSG_ERROR;
5227 if (txn->status) {
5228 /* Note: we don't send any error if some data were already sent */
5229 stream_int_retnclose(req->prod, NULL);
5230 } else {
5231 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5232 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5233 }
5234 req->analysers = 0;
5235 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]5236
5237 if (!(s->flags & SN_ERR_MASK))
5238 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5239 if (!(s->flags & SN_FINST_MASK)) {
5240 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5241 s->flags |= SN_FINST_H;
5242 else
5243 s->flags |= SN_FINST_D;
5244 }
5245 return 0;
5246
5247 aborted_xfer:
5248 txn->req.msg_state = HTTP_MSG_ERROR;
5249 if (txn->status) {
5250 /* Note: we don't send any error if some data were already sent */
5251 stream_int_retnclose(req->prod, NULL);
5252 } else {
5253 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5254 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5255 }
5256 req->analysers = 0;
5257 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5258
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5259 s->fe->fe_counters.srv_aborts++;
5260 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5261 if (objt_server(s->target))
5262 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5263
5264 if (!(s->flags & SN_ERR_MASK))
5265 s->flags |= SN_ERR_SRVCL;
5266 if (!(s->flags & SN_FINST_MASK)) {
5267 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5268 s->flags |= SN_FINST_H;
5269 else
5270 s->flags |= SN_FINST_D;
5271 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5272 return 0;
5273}
5274
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5275/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5276 * processing can continue on next analysers, or zero if it either needs more
5277 * data or wants to immediately abort the response (eg: timeout, error, ...). It
5278 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
5279 * when it has nothing left to do, and may remove any analyser when it wants to
5280 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5281 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5282int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5283{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5284 struct http_txn *txn = &s->txn;
5285 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5286 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5287 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5288 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5289 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5290
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5291 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]5292 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5293 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5294 rep,
5295 rep->rex, rep->wex,
5296 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5297 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5298 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5299
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5300 /*
5301 * Now parse the partial (or complete) lines.
5302 * We will check the response syntax, and also join multi-line
5303 * headers. An index of all the lines will be elaborated while
5304 * parsing.
5305 *
5306 * For the parsing, we use a 28 states FSM.
5307 *
5308 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5309 * rep->buf->p = beginning of response
5310 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5311 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5312 * msg->eol = end of current header or line (LF or CRLF)
5313 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5314 */
5315
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5316 /* There's a protected area at the end of the buffer for rewriting
5317 * purposes. We don't want to start to parse the request if the
5318 * protected area is affected, because we may have to move processed
5319 * data later, which is much more complicated.
5320 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5321 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5322 if (unlikely(!channel_reserved(rep))) {
5323 /* some data has still not left the buffer, wake us once that's done */
5324 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5325 goto abort_response;
5326 channel_dont_close(rep);
5327 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5328 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5329 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5330 }
5331
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5332 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5333 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5334 buffer_slow_realign(rep->buf);
5335
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5336 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5337 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5338 }
5339
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5340 /* 1: we might have to print this header in debug mode */
5341 if (unlikely((global.mode & MODE_DEBUG) &&
5342 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5343 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5344 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5345
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5346 sol = rep->buf->p;
5347 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5348 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5349
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5350 sol += hdr_idx_first_pos(&txn->hdr_idx);
5351 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5352
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5353 while (cur_idx) {
5354 eol = sol + txn->hdr_idx.v[cur_idx].len;
5355 debug_hdr("srvhdr", s, sol, eol);
5356 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5357 cur_idx = txn->hdr_idx.v[cur_idx].next;
5358 }
5359 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5360
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5361 /*
5362 * Now we quickly check if we have found a full valid response.
5363 * If not so, we check the FD and buffer states before leaving.
5364 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5365 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5366 * responses are checked first.
5367 *
5368 * Depending on whether the client is still there or not, we
5369 * may send an error response back or not. Note that normally
5370 * we should only check for HTTP status there, and check I/O
5371 * errors somewhere else.
5372 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5373
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5374 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5375 /* Invalid response */
5376 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5377 /* we detected a parsing error. We want to archive this response
5378 * in the dedicated proxy area for later troubleshooting.
5379 */
5380 hdr_response_bad:
5381 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5382 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]5383
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5384 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5385 if (objt_server(s->target)) {
5386 objt_server(s->target)->counters.failed_resp++;
5387 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5388 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5389 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5390 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5391 rep->analysers = 0;
5392 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5393 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5394 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5395 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5396
5397 if (!(s->flags & SN_ERR_MASK))
5398 s->flags |= SN_ERR_PRXCOND;
5399 if (!(s->flags & SN_FINST_MASK))
5400 s->flags |= SN_FINST_H;
5401
5402 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5403 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5404
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5405 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5406 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5407 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5408 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5409 goto hdr_response_bad;
5410 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5411
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5412 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5413 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5414 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5415 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]5416 else if (txn->flags & TX_NOT_FIRST)
5417 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5418
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5419 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5420 if (objt_server(s->target)) {
5421 objt_server(s->target)->counters.failed_resp++;
5422 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5423 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5424
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5425 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5426 rep->analysers = 0;
5427 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5428 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5429 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5430 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5431
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5432 if (!(s->flags & SN_ERR_MASK))
5433 s->flags |= SN_ERR_SRVCL;
5434 if (!(s->flags & SN_FINST_MASK))
5435 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5436 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5437 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5438
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5439 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5440 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5441 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5442 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]5443 else if (txn->flags & TX_NOT_FIRST)
5444 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5445
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5446 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5447 if (objt_server(s->target)) {
5448 objt_server(s->target)->counters.failed_resp++;
5449 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5450 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5451
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5452 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5453 rep->analysers = 0;
5454 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5455 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5456 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5457 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5458
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5459 if (!(s->flags & SN_ERR_MASK))
5460 s->flags |= SN_ERR_SRVTO;
5461 if (!(s->flags & SN_FINST_MASK))
5462 s->flags |= SN_FINST_H;
5463 return 0;
5464 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5465
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5466 /* client abort with an abortonclose */
5467 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5468 s->fe->fe_counters.cli_aborts++;
5469 s->be->be_counters.cli_aborts++;
5470 if (objt_server(s->target))
5471 objt_server(s->target)->counters.cli_aborts++;
5472
5473 rep->analysers = 0;
5474 channel_auto_close(rep);
5475
5476 txn->status = 400;
5477 bi_erase(rep);
5478 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5479
5480 if (!(s->flags & SN_ERR_MASK))
5481 s->flags |= SN_ERR_CLICL;
5482 if (!(s->flags & SN_FINST_MASK))
5483 s->flags |= SN_FINST_H;
5484
5485 /* process_session() will take care of the error */
5486 return 0;
5487 }
5488
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5489 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5490 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5491 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5492 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]5493 else if (txn->flags & TX_NOT_FIRST)
5494 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5495
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5496 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5497 if (objt_server(s->target)) {
5498 objt_server(s->target)->counters.failed_resp++;
5499 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5500 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5501
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5502 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5503 rep->analysers = 0;
5504 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5505 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5506 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5507 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5508
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5509 if (!(s->flags & SN_ERR_MASK))
5510 s->flags |= SN_ERR_SRVCL;
5511 if (!(s->flags & SN_FINST_MASK))
5512 s->flags |= SN_FINST_H;
5513 return 0;
5514 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5515
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5516 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5517 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5518 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5519 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]5520 else if (txn->flags & TX_NOT_FIRST)
5521 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5522
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5523 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5524 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5525 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5526
5527 if (!(s->flags & SN_ERR_MASK))
5528 s->flags |= SN_ERR_CLICL;
5529 if (!(s->flags & SN_FINST_MASK))
5530 s->flags |= SN_FINST_H;
5531
5532 /* process_session() will take care of the error */
5533 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5534 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5535
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5536 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5537 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5538 return 0;
5539 }
5540
5541 /* More interesting part now : we know that we have a complete
5542 * response which at least looks like HTTP. We have an indicator
5543 * of each header's length, so we can parse them quickly.
5544 */
5545
5546 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5547 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]5548
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5549 /*
5550 * 1: get the status code
5551 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5552 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5553 if (n < 1 || n > 5)
5554 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5555 /* when the client triggers a 4xx from the server, it's most often due
5556 * to a missing object or permission. These events should be tracked
5557 * because if they happen often, it may indicate a brute force or a
5558 * vulnerability scan.
5559 */
5560 if (n == 4)
5561 session_inc_http_err_ctr(s);
5562
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5563 if (objt_server(s->target))
5564 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5565
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5566 /* check if the response is HTTP/1.1 or above */
5567 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5568 ((rep->buf->p[5] > '1') ||
5569 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5570 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5571
5572 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5573 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]5574
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5575 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5576 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5577
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5578 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]5579
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5580 /* Adjust server's health based on status code. Note: status codes 501
5581 * and 505 are triggered on demand by client request, so we must not
5582 * count them as server failures.
5583 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5584 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5585 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5586 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5587 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5588 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5589 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5590
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5591 /*
5592 * 2: check for cacheability.
5593 */
5594
5595 switch (txn->status) {
5596 case 200:
5597 case 203:
5598 case 206:
5599 case 300:
5600 case 301:
5601 case 410:
5602 /* RFC2616 @13.4:
5603 * "A response received with a status code of
5604 * 200, 203, 206, 300, 301 or 410 MAY be stored
5605 * by a cache (...) unless a cache-control
5606 * directive prohibits caching."
5607 *
5608 * RFC2616 @9.5: POST method :
5609 * "Responses to this method are not cacheable,
5610 * unless the response includes appropriate
5611 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5612 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5613 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5614 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5615 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5616 break;
5617 default:
5618 break;
5619 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5620
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5621 /*
5622 * 3: we may need to capture headers
5623 */
5624 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5625 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5626 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5627 txn->rsp.cap, s->fe->rsp_cap);
5628
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5629 /* 4: determine the transfer-length.
5630 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5631 * the presence of a message-body in a RESPONSE and its transfer length
5632 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5633 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5634 * All responses to the HEAD request method MUST NOT include a
5635 * message-body, even though the presence of entity-header fields
5636 * might lead one to believe they do. All 1xx (informational), 204
5637 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5638 * message-body. All other responses do include a message-body,
5639 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5640 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5641 * 1. Any response which "MUST NOT" include a message-body (such as the
5642 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5643 * always terminated by the first empty line after the header fields,
5644 * regardless of the entity-header fields present in the message.
5645 *
5646 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5647 * the "chunked" transfer-coding (Section 6.2) is used, the
5648 * transfer-length is defined by the use of this transfer-coding.
5649 * If a Transfer-Encoding header field is present and the "chunked"
5650 * transfer-coding is not present, the transfer-length is defined by
5651 * the sender closing the connection.
5652 *
5653 * 3. If a Content-Length header field is present, its decimal value in
5654 * OCTETs represents both the entity-length and the transfer-length.
5655 * If a message is received with both a Transfer-Encoding header
5656 * field and a Content-Length header field, the latter MUST be ignored.
5657 *
5658 * 4. If the message uses the media type "multipart/byteranges", and
5659 * the transfer-length is not otherwise specified, then this self-
5660 * delimiting media type defines the transfer-length. This media
5661 * type MUST NOT be used unless the sender knows that the recipient
5662 * can parse it; the presence in a request of a Range header with
5663 * multiple byte-range specifiers from a 1.1 client implies that the
5664 * client can parse multipart/byteranges responses.
5665 *
5666 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5667 */
5668
5669 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5670 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5671 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5672 * FIXME: should we parse anyway and return an error on chunked encoding ?
5673 */
5674 if (txn->meth == HTTP_METH_HEAD ||
5675 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5676 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5677 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5678 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5679 goto skip_content_length;
5680 }
5681
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5682 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5683 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5684 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5685 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5686 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5687 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5688 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5689 /* bad transfer-encoding (chunked followed by something else) */
5690 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5691 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5692 break;
5693 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5694 }
5695
5696 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5697 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5698 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5699 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5700 signed long long cl;
5701
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5702 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5703 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5704 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5705 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5706
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5707 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5708 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5709 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5710 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5711
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5712 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5713 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5714 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5715 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5716
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5717 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5718 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5719 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5720 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5721
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5722 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5723 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5724 }
5725
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5726 if (s->fe->comp || s->be->comp)
5727 select_compression_response_header(s, rep->buf);
5728
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5729 /* FIXME: we should also implement the multipart/byterange method.
5730 * For now on, we resort to close mode in this case (unknown length).
5731 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5732skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5733
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5734 /* end of job, return OK */
5735 rep->analysers &= ~an_bit;
5736 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5737 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5738 return 1;
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5739
5740 abort_keep_alive:
5741 /* A keep-alive request to the server failed on a network error.
5742 * The client is required to retry. We need to close without returning
5743 * any other information so that the client retries.
5744 */
5745 txn->status = 0;
5746 rep->analysers = 0;
5747 s->req->analysers = 0;
5748 channel_auto_close(rep);
5749 s->logs.logwait = 0;
5750 s->logs.level = 0;
5751 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
5752 bi_erase(rep);
5753 stream_int_retnclose(rep->cons, NULL);
5754 return 0;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5755}
5756
5757/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5758 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5759 * and updates t->rep->analysers. It might make sense to explode it into several
5760 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5761 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5762int http_process_res_common(struct session *t, struct channel *rep, int an_bit, struct proxy *px)
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5763{
5764 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5765 struct http_msg *msg = &txn->rsp;
5766 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5767 struct cond_wordlist *wl;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5768 struct http_res_rule *http_res_last_rule = NULL;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5769
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5770 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5771 now_ms, __FUNCTION__,
5772 t,
5773 rep,
5774 rep->rex, rep->wex,
5775 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5776 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5777 rep->analysers);
5778
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5779 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5780 return 0;
5781
5782 rep->analysers &= ~an_bit;
5783 rep->analyse_exp = TICK_ETERNITY;
5784
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5785 /* Now we have to check if we need to modify the Connection header.
5786 * This is more difficult on the response than it is on the request,
5787 * because we can have two different HTTP versions and we don't know
5788 * how the client will interprete a response. For instance, let's say
5789 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5790 * HTTP/1.1 response without any header. Maybe it will bound itself to
5791 * HTTP/1.0 because it only knows about it, and will consider the lack
5792 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5793 * the lack of header as a keep-alive. Thus we will use two flags
5794 * indicating how a request MAY be understood by the client. In case
5795 * of multiple possibilities, we'll fix the header to be explicit. If
5796 * ambiguous cases such as both close and keepalive are seen, then we
5797 * will fall back to explicit close. Note that we won't take risks with
5798 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5799 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5800 */
5801
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5802 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5803 txn->status == 101)) {
5804 /* Either we've established an explicit tunnel, or we're
5805 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5806 * to understand the next protocols. We have to switch to tunnel
5807 * mode, so that we transfer the request and responses then let
5808 * this protocol pass unmodified. When we later implement specific
5809 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5810 * header which contains information about that protocol for
5811 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5812 */
5813 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5814 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5815 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5816 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]5817 ((t->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
5818 (t->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5819 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5820
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]5821 /* this situation happens when combining pretend-keepalive with httpclose. */
5822 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
5823 ((t->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
5824 (t->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
5825 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
5826
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5827 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5828 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5829 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5830 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5831
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5832 /* now adjust header transformations depending on current state */
5833 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5834 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5835 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5836 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5837 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5838 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5839 else { /* SCL / KAL */
5840 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5841 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5842 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5843 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5844
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5845 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5846 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5847
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5848 /* Some keep-alive responses are converted to Server-close if
5849 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5850 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5851 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5852 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5853 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5854 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5855 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5856 }
5857
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5858 /* we want to have the response time before we start processing it */
5859 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
5860
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5861 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5862 /*
5863 * 3: we will have to evaluate the filters.
5864 * As opposed to version 1.2, now they will be evaluated in the
5865 * filters order and not in the header order. This means that
5866 * each filter has to be validated among all headers.
5867 *
5868 * Filters are tried with ->be first, then with ->fe if it is
5869 * different from ->be.
5870 */
5871
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5872 cur_proxy = t->be;
5873 while (1) {
5874 struct proxy *rule_set = cur_proxy;
5875
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5876 /* evaluate http-response rules */
5877 if (!http_res_last_rule)
5878 http_res_last_rule = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, t, txn);
5879
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5880 /* try headers filters */
5881 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5882 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5883 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5884 if (objt_server(t->target)) {
5885 objt_server(t->target)->counters.failed_resp++;
5886 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5887 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5888 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5889 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5890 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5891 txn->status = 502;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5892 t->logs.t_data = -1; /* was not a valid response */
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5893 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5894 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5895 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5896 if (!(t->flags & SN_ERR_MASK))
5897 t->flags |= SN_ERR_PRXCOND;
5898 if (!(t->flags & SN_FINST_MASK))
5899 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5900 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5901 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5902 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5903
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5904 /* has the response been denied ? */
5905 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5906 if (objt_server(t->target))
5907 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5908
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5909 t->be->be_counters.denied_resp++;
5910 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5911 if (t->listener->counters)
5912 t->listener->counters->denied_resp++;
5913
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5914 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5915 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5916
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5917 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5918 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5919 if (txn->status < 200)
5920 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5921 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5922 int ret = acl_exec_cond(wl->cond, px, t, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5923 ret = acl_pass(ret);
5924 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5925 ret = !ret;
5926 if (!ret)
5927 continue;
5928 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5929 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5930 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5931 }
5932
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5933 /* check whether we're already working on the frontend */
5934 if (cur_proxy == t->fe)
5935 break;
5936 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5937 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5938
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5939 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5940 * We may be facing a 100-continue response, in which case this
5941 * is not the right response, and we're waiting for the next one.
5942 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5943 * next one.
5944 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5945 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5946 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5947 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5948 msg->msg_state = HTTP_MSG_RPBEFORE;
5949 txn->status = 0;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5950 t->logs.t_data = -1; /* was not a response yet */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5951 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5952 return 1;
5953 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5954 else if (unlikely(txn->status < 200))
5955 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5956
5957 /* we don't have any 1xx status code now */
5958
5959 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5960 * 4: check for server cookie.
5961 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5962 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5963 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5964 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5965
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5966
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5967 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5968 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5969 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5970 if ((t->be->options & PR_O_CHK_CACHE) || (t->be->ck_opts & PR_CK_NOC))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5971 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5972
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5973 /*
5974 * 6: add server cookie in the response if needed
5975 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5976 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5977 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5978 (!(t->flags & SN_DIRECT) ||
5979 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5980 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5981 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5982 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5983 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5984 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5985 /* the server is known, it's not the one the client requested, or the
5986 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5987 * insert a set-cookie here, except if we want to insert only on POST
5988 * requests and this one isn't. Note that servers which don't have cookies
5989 * (eg: some backup servers) will return a full cookie removal request.
5990 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5991 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5992 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5993 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5994 t->be->cookie_name);
5995 }
5996 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5997 chunk_printf(&trash, "Set-Cookie: %s=%s", t->be->cookie_name, objt_server(t->target)->cookie);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5998
5999 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
6000 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6001 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6002 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6003 trash.len += 5;
6004
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6005 if (t->be->cookie_maxlife) {
6006 /* emit first_date, which is either the original one or
6007 * the current date.
6008 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6009 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6010 s30tob64(txn->cookie_first_date ?
6011 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6012 (date.tv_sec+3) >> 2, trash.str + trash.len);
6013 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6014 }
6015 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6016 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6017 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6018
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6019 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6020 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6021
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6022 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6023 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6024
6025 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6026 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6027
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6028 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6029 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6030
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6031 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6032 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6033 /* the server did not change, only the date was updated */
6034 txn->flags |= TX_SCK_UPDATED;
6035 else
6036 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6037
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6038 /* Here, we will tell an eventual cache on the client side that we don't
6039 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6040 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6041 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
6042 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6043 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6044
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6045 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
6046
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6047 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]6048 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6049 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6050 }
6051 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6052
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6053 /*
6054 * 7: check if result will be cacheable with a cookie.
6055 * We'll block the response if security checks have caught
6056 * nasty things such as a cacheable cookie.
6057 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6058 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6059 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6060 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6061
6062 /* we're in presence of a cacheable response containing
6063 * a set-cookie header. We'll block it as requested by
6064 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6065 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6066 if (objt_server(t->target))
6067 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6068
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6069 t->be->be_counters.denied_resp++;
6070 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6071 if (t->listener->counters)
6072 t->listener->counters->denied_resp++;
6073
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6074 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6075 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6076 send_log(t->be, LOG_ALERT,
6077 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6078 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6079 goto return_srv_prx_502;
6080 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6081
6082 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6083 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6084 * If an "Upgrade" token is found, the header is left untouched in order
6085 * not to have to deal with some client bugs : some of them fail an upgrade
6086 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6087 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6088 if (!(txn->flags & TX_HDR_CONN_UPG) &&
6089 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]6090 ((t->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6091 (t->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6092 unsigned int want_flags = 0;
6093
6094 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6095 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6096 /* we want a keep-alive response here. Keep-alive header
6097 * required if either side is not 1.1.
6098 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6099 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6100 want_flags |= TX_CON_KAL_SET;
6101 }
6102 else {
6103 /* we want a close response here. Close header required if
6104 * the server is 1.1, regardless of the client.
6105 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6106 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6107 want_flags |= TX_CON_CLO_SET;
6108 }
6109
6110 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6111 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6112 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6113
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6114 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6115 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6116 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6117 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6118
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6119 /*************************************************************
6120 * OK, that's finished for the headers. We have done what we *
6121 * could. Let's switch to the DATA state. *
6122 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6123
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6124 /* if the user wants to log as soon as possible, without counting
6125 * bytes from the server, then this is the right moment. We have
6126 * to temporarily assign bytes_out to log what we currently have.
6127 */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]6128 if (!LIST_ISEMPTY(&t->fe->logformat) && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6129 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
6130 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]6131 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6132 t->logs.bytes_out = 0;
6133 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6134
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6135 /* Note: we must not try to cheat by jumping directly to DATA,
6136 * otherwise we would not let the client side wake up.
6137 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6138
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6139 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6140 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6141 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6142}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6143
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6144/* This function is an analyser which forwards response body (including chunk
6145 * sizes if any). It is called as soon as we must forward, even if we forward
6146 * zero byte. The only situation where it must not be called is when we're in
6147 * tunnel mode and we want to forward till the close. It's used both to forward
6148 * remaining data and to resync after end of body. It expects the msg_state to
6149 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
6150 * 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]6151 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]6152 * bytes of pending data + the headers if not already done (between sol and sov).
6153 * It eventually adjusts sol to match sov after the data in between have been sent.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6154 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6155int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6156{
6157 struct http_txn *txn = &s->txn;
6158 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]6159 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6160 static struct buffer *tmpbuf = NULL;
6161 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6162 int consumed_data = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6163 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6164
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6165 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6166 return 0;
6167
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6168 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]6169 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]6170 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6171 /* Output closed while we were sending data. We must abort and
6172 * wake the other side up.
6173 */
6174 msg->msg_state = HTTP_MSG_ERROR;
6175 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6176 return 1;
6177 }
6178
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6179 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6180 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6181
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6182 /* this is the first time we need the compression buffer */
6183 if (s->comp_algo != NULL && tmpbuf == NULL) {
6184 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
6185 goto aborted_xfer; /* no memory */
6186 }
6187
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6188 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]6189 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6190 * rep->buf.p still points to the beginning of the message and msg->sol
6191 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6192 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6193 channel_forward(res, msg->sov);
6194 msg->next = 0;
6195 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6196
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6197 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6198 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6199 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6200 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6201 }
6202
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6203 if (s->comp_algo != NULL) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6204 ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6205 if (ret < 0) {
6206 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6207 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6208 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6209 compressing = 1;
6210 }
6211
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6212 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6213 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]6214 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6215 if (s->comp_algo == NULL) {
6216 bytes = msg->sov - msg->sol;
6217 if (msg->chunk_len || bytes) {
6218 msg->sol = msg->sov;
6219 msg->next -= bytes; /* will be forwarded */
6220 msg->chunk_len += bytes;
6221 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6222 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]6223 }
6224
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6225 switch (msg->msg_state - HTTP_MSG_DATA) {
6226 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6227 if (compressing) {
6228 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
6229 if (ret < 0)
6230 goto aborted_xfer;
6231 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6232
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6233 if (res->to_forward || msg->chunk_len) {
6234 res->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6235 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6236 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6237
6238 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6239 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6240 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6241 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6242 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6243 if (compressing && consumed_data) {
6244 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6245 compressing = 0;
6246 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6247 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6248 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6249 /* fall through for HTTP_MSG_CHUNK_CRLF */
6250
6251 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6252 /* we want the CRLF after the data */
6253
6254 ret = http_skip_chunk_crlf(msg);
6255 if (ret == 0)
6256 goto missing_data;
6257 else if (ret < 0) {
6258 if (msg->err_pos >= 0)
6259 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
6260 goto return_bad_res;
6261 }
6262 /* skipping data in buffer for compression */
6263 if (compressing) {
6264 b_adv(res->buf, msg->next);
6265 msg->next = 0;
6266 msg->sov = 0;
6267 msg->sol = 0;
6268 }
6269 /* we're in MSG_CHUNK_SIZE now, fall through */
6270
6271 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6272 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6273 * set ->sov and ->next to point to the body and switch to DATA or
6274 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6275 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6276
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6277 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6278 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6279 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6280 else if (ret < 0) {
6281 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6282 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]6283 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6284 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6285 if (compressing) {
6286 if (likely(msg->chunk_len > 0)) {
6287 /* skipping data if we are in compression mode */
6288 b_adv(res->buf, msg->next);
6289 msg->next = 0;
6290 msg->sov = 0;
6291 msg->sol = 0;
6292 } else {
6293 if (consumed_data) {
6294 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6295 compressing = 0;
6296 }
6297 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6298 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6299 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6300 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6301
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6302 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
6303 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6304 if (ret == 0)
6305 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6306 else if (ret < 0) {
6307 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6308 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]6309 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6310 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]6311 if (s->comp_algo != NULL) {
6312 /* forwarding trailers */
6313 channel_forward(res, msg->next);
6314 msg->next = 0;
6315 }
Willy Tarreau2d43e182013-04-03 00:22:25 +0200[diff] [blame]6316 /* we're in HTTP_MSG_DONE now, but we might still have
6317 * some data pending, so let's loop over once.
6318 */
6319 break;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6320
6321 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6322 /* other states, DONE...TUNNEL */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6323
6324 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6325 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6326 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6327 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6328 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6329 if (http_resync_states(s)) {
6330 http_silent_debug(__LINE__, s);
6331 /* some state changes occurred, maybe the analyser
6332 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6333 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6334 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6335 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6336 /* response errors are most likely due to
6337 * the client aborting the transfer.
6338 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6339 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6340 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6341 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6342 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6343 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6344 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6345 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6346 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6347 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6348 }
6349 }
6350
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6351 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6352 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6353 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
6354 compressing = 0;
6355 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6356
6357 if (res->flags & CF_SHUTW)
6358 goto aborted_xfer;
6359
6360 /* stop waiting for data if the input is closed before the end. If the
6361 * client side was already closed, it means that the client has aborted,
6362 * so we don't want to count this as a server abort. Otherwise it's a
6363 * server abort.
6364 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6365 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6366 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
6367 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6368 if (!(s->flags & SN_ERR_MASK))
6369 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6370 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6371 if (objt_server(s->target))
6372 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6373 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6374 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6375
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6376 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6377 if (!s->req->analysers)
6378 goto return_bad_res;
6379
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]6380 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6381 if (s->comp_algo == NULL) {
6382 bytes = msg->sov - msg->sol;
6383 if (msg->chunk_len || bytes) {
6384 msg->sol = msg->sov;
6385 msg->next -= bytes; /* will be forwarded */
6386 msg->chunk_len += bytes;
6387 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6388 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6389 }
6390
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6391 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6392 * 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]6393 * Similarly, with keep-alive on the client side, we don't want to forward a
6394 * close.
6395 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6396 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6397 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6398 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6399 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6400
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6401 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6402 * 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]6403 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6404 * modes are already handled by the stream sock layer. We must not do
6405 * this in content-length mode because it could present the MSG_MORE
6406 * flag with the last block of forwarded data, which would cause an
6407 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6408 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6409 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6410 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6411
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6412 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6413 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6414 return 0;
6415
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6416 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6417 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6418 if (objt_server(s->target))
6419 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6420
6421 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6422 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6423 /* don't send any error message as we're in the body */
6424 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6425 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6426 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]6427 if (objt_server(s->target))
6428 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6429
6430 if (!(s->flags & SN_ERR_MASK))
6431 s->flags |= SN_ERR_PRXCOND;
6432 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6433 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6434 return 0;
6435
6436 aborted_xfer:
6437 txn->rsp.msg_state = HTTP_MSG_ERROR;
6438 /* don't send any error message as we're in the body */
6439 stream_int_retnclose(res->cons, NULL);
6440 res->analysers = 0;
6441 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6442
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6443 s->fe->fe_counters.cli_aborts++;
6444 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6445 if (objt_server(s->target))
6446 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6447
6448 if (!(s->flags & SN_ERR_MASK))
6449 s->flags |= SN_ERR_CLICL;
6450 if (!(s->flags & SN_FINST_MASK))
6451 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6452 return 0;
6453}
6454
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6455/* Iterate the same filter through all request headers.
6456 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6457 * Since it can manage the switch to another backend, it updates the per-proxy
6458 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6459 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6460int apply_filter_to_req_headers(struct session *t, struct channel *req, struct hdr_exp *exp)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6461{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6462 char term;
6463 char *cur_ptr, *cur_end, *cur_next;
6464 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6465 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6466 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6467 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6468
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6469 last_hdr = 0;
6470
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6471 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6472 old_idx = 0;
6473
6474 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6475 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6476 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6477 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6478 (exp->action == ACT_ALLOW ||
6479 exp->action == ACT_DENY ||
6480 exp->action == ACT_TARPIT))
6481 return 0;
6482
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6483 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6484 if (!cur_idx)
6485 break;
6486
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6487 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6488 cur_ptr = cur_next;
6489 cur_end = cur_ptr + cur_hdr->len;
6490 cur_next = cur_end + cur_hdr->cr + 1;
6491
6492 /* Now we have one header between cur_ptr and cur_end,
6493 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6494 */
6495
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6496 /* The annoying part is that pattern matching needs
6497 * that we modify the contents to null-terminate all
6498 * strings before testing them.
6499 */
6500
6501 term = *cur_end;
6502 *cur_end = '\0';
6503
6504 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6505 switch (exp->action) {
6506 case ACT_SETBE:
6507 /* It is not possible to jump a second time.
6508 * FIXME: should we return an HTTP/500 here so that
6509 * the admin knows there's a problem ?
6510 */
6511 if (t->be != t->fe)
6512 break;
6513
6514 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6515 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6516 last_hdr = 1;
6517 break;
6518
6519 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6520 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6521 last_hdr = 1;
6522 break;
6523
6524 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6525 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6526 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6527 break;
6528
6529 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6530 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6531 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6532 break;
6533
6534 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6535 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6536 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6537 /* FIXME: if the user adds a newline in the replacement, the
6538 * index will not be recalculated for now, and the new line
6539 * will not be counted as a new header.
6540 */
6541
6542 cur_end += delta;
6543 cur_next += delta;
6544 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6545 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6546 break;
6547
6548 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6549 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6550 cur_next += delta;
6551
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6552 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6553 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6554 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6555 cur_hdr->len = 0;
6556 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6557 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6558 break;
6559
6560 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6561 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6562 if (cur_end)
6563 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6564
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6565 /* keep the link from this header to next one in case of later
6566 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6567 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6568 old_idx = cur_idx;
6569 }
6570 return 0;
6571}
6572
6573
6574/* Apply the filter to the request line.
6575 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6576 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6577 * Since it can manage the switch to another backend, it updates the per-proxy
6578 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6579 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6580int apply_filter_to_req_line(struct session *t, struct channel *req, struct hdr_exp *exp)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6581{
6582 char term;
6583 char *cur_ptr, *cur_end;
6584 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6585 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6586 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6587
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6588 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6589 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6590 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6591 (exp->action == ACT_ALLOW ||
6592 exp->action == ACT_DENY ||
6593 exp->action == ACT_TARPIT))
6594 return 0;
6595 else if (exp->action == ACT_REMOVE)
6596 return 0;
6597
6598 done = 0;
6599
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6600 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6601 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6602
6603 /* Now we have the request line between cur_ptr and cur_end */
6604
6605 /* The annoying part is that pattern matching needs
6606 * that we modify the contents to null-terminate all
6607 * strings before testing them.
6608 */
6609
6610 term = *cur_end;
6611 *cur_end = '\0';
6612
6613 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6614 switch (exp->action) {
6615 case ACT_SETBE:
6616 /* It is not possible to jump a second time.
6617 * FIXME: should we return an HTTP/500 here so that
6618 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6619 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6620 if (t->be != t->fe)
6621 break;
6622
6623 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6624 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6625 done = 1;
6626 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6627
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6628 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6629 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6630 done = 1;
6631 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6632
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6633 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6634 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6635 done = 1;
6636 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6637
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6638 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6639 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6640 done = 1;
6641 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6642
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6643 case ACT_REPLACE:
6644 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6645 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6646 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6647 /* FIXME: if the user adds a newline in the replacement, the
6648 * index will not be recalculated for now, and the new line
6649 * will not be counted as a new header.
6650 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6651
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6652 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6653 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6654 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6655 HTTP_MSG_RQMETH,
6656 cur_ptr, cur_end + 1,
6657 NULL, NULL);
6658 if (unlikely(!cur_end))
6659 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6660
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6661 /* we have a full request and we know that we have either a CR
6662 * or an LF at <ptr>.
6663 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6664 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6665 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]6666 /* there is no point trying this regex on headers */
6667 return 1;
6668 }
6669 }
6670 *cur_end = term; /* restore the string terminator */
6671 return done;
6672}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6673
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6674
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6675
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6676/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6677 * 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]6678 * 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]6679 * unparsable request. Since it can manage the switch to another backend, it
6680 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6681 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6682int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6683{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6684 struct http_txn *txn = &s->txn;
6685 struct hdr_exp *exp;
6686
6687 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6688 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6689
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6690 /*
6691 * The interleaving of transformations and verdicts
6692 * makes it difficult to decide to continue or stop
6693 * the evaluation.
6694 */
6695
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6696 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6697 break;
6698
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6699 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6700 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6701 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6702 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6703
6704 /* if this filter had a condition, evaluate it now and skip to
6705 * next filter if the condition does not match.
6706 */
6707 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6708 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]6709 ret = acl_pass(ret);
6710 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6711 ret = !ret;
6712
6713 if (!ret)
6714 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6715 }
6716
6717 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6718 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6719 if (unlikely(ret < 0))
6720 return -1;
6721
6722 if (likely(ret == 0)) {
6723 /* The filter did not match the request, it can be
6724 * iterated through all headers.
6725 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6726 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6727 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6728 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6729 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6730}
6731
6732
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6733
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6734/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6735 * Try to retrieve the server associated to the appsession.
6736 * If the server is found, it's assigned to the session.
6737 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6738void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6739 struct http_txn *txn = &t->txn;
6740 appsess *asession = NULL;
6741 char *sessid_temp = NULL;
6742
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6743 if (len > t->be->appsession_len) {
6744 len = t->be->appsession_len;
6745 }
6746
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6747 if (t->be->options2 & PR_O2_AS_REQL) {
6748 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6749 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6750 /* 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]6751 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6752 }
6753
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6754 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6755 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6756 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6757 return;
6758 }
6759
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6760 memcpy(txn->sessid, buf, len);
6761 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6762 }
6763
6764 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6765 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6766 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6767 return;
6768 }
6769
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6770 memcpy(sessid_temp, buf, len);
6771 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6772
6773 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6774 /* free previously allocated memory */
6775 pool_free2(apools.sessid, sessid_temp);
6776
6777 if (asession != NULL) {
6778 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6779 if (!(t->be->options2 & PR_O2_AS_REQL))
6780 asession->request_count++;
6781
6782 if (asession->serverid != NULL) {
6783 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6784
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6785 while (srv) {
6786 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6787 if ((srv->state & SRV_RUNNING) ||
6788 (t->be->options & PR_O_PERSIST) ||
6789 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6790 /* we found the server and it's usable */
6791 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6792 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6793 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6794 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6795
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6796 break;
6797 } else {
6798 txn->flags &= ~TX_CK_MASK;
6799 txn->flags |= TX_CK_DOWN;
6800 }
6801 }
6802 srv = srv->next;
6803 }
6804 }
6805 }
6806}
6807
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6808/* Find the end of a cookie value contained between <s> and <e>. It works the
6809 * same way as with headers above except that the semi-colon also ends a token.
6810 * See RFC2965 for more information. Note that it requires a valid header to
6811 * return a valid result.
6812 */
6813char *find_cookie_value_end(char *s, const char *e)
6814{
6815 int quoted, qdpair;
6816
6817 quoted = qdpair = 0;
6818 for (; s < e; s++) {
6819 if (qdpair) qdpair = 0;
6820 else if (quoted) {
6821 if (*s == '\\') qdpair = 1;
6822 else if (*s == '"') quoted = 0;
6823 }
6824 else if (*s == '"') quoted = 1;
6825 else if (*s == ',' || *s == ';') return s;
6826 }
6827 return s;
6828}
6829
6830/* Delete a value in a header between delimiters <from> and <next> in buffer
6831 * <buf>. The number of characters displaced is returned, and the pointer to
6832 * the first delimiter is updated if required. The function tries as much as
6833 * possible to respect the following principles :
6834 * - replace <from> delimiter by the <next> one unless <from> points to a
6835 * colon, in which case <next> is simply removed
6836 * - set exactly one space character after the new first delimiter, unless
6837 * there are not enough characters in the block being moved to do so.
6838 * - remove unneeded spaces before the previous delimiter and after the new
6839 * one.
6840 *
6841 * It is the caller's responsibility to ensure that :
6842 * - <from> points to a valid delimiter or the colon ;
6843 * - <next> points to a valid delimiter or the final CR/LF ;
6844 * - there are non-space chars before <from> ;
6845 * - there is a CR/LF at or after <next>.
6846 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6847int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6848{
6849 char *prev = *from;
6850
6851 if (*prev == ':') {
6852 /* We're removing the first value, preserve the colon and add a
6853 * space if possible.
6854 */
6855 if (!http_is_crlf[(unsigned char)*next])
6856 next++;
6857 prev++;
6858 if (prev < next)
6859 *prev++ = ' ';
6860
6861 while (http_is_spht[(unsigned char)*next])
6862 next++;
6863 } else {
6864 /* Remove useless spaces before the old delimiter. */
6865 while (http_is_spht[(unsigned char)*(prev-1)])
6866 prev--;
6867 *from = prev;
6868
6869 /* copy the delimiter and if possible a space if we're
6870 * not at the end of the line.
6871 */
6872 if (!http_is_crlf[(unsigned char)*next]) {
6873 *prev++ = *next++;
6874 if (prev + 1 < next)
6875 *prev++ = ' ';
6876 while (http_is_spht[(unsigned char)*next])
6877 next++;
6878 }
6879 }
6880 return buffer_replace2(buf, prev, next, NULL, 0);
6881}
6882
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6883/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6884 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6885 * desirable to call it only when needed. This code is quite complex because
6886 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6887 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6888 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6889void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6890{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6891 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6892 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6893 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6894 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6895 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6896
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6897 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6898 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6899 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6900
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6901 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6902 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6903 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6904
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6905 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6906 hdr_beg = hdr_next;
6907 hdr_end = hdr_beg + cur_hdr->len;
6908 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6909
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6910 /* We have one full header between hdr_beg and hdr_end, and the
6911 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6912 * "Cookie:" headers.
6913 */
6914
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6915 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6916 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6917 old_idx = cur_idx;
6918 continue;
6919 }
6920
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6921 del_from = NULL; /* nothing to be deleted */
6922 preserve_hdr = 0; /* assume we may kill the whole header */
6923
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6924 /* Now look for cookies. Conforming to RFC2109, we have to support
6925 * attributes whose name begin with a '$', and associate them with
6926 * the right cookie, if we want to delete this cookie.
6927 * So there are 3 cases for each cookie read :
6928 * 1) it's a special attribute, beginning with a '$' : ignore it.
6929 * 2) it's a server id cookie that we *MAY* want to delete : save
6930 * some pointers on it (last semi-colon, beginning of cookie...)
6931 * 3) it's an application cookie : we *MAY* have to delete a previous
6932 * "special" cookie.
6933 * At the end of loop, if a "special" cookie remains, we may have to
6934 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6935 * *MUST* delete it.
6936 *
6937 * Note: RFC2965 is unclear about the processing of spaces around
6938 * the equal sign in the ATTR=VALUE form. A careful inspection of
6939 * the RFC explicitly allows spaces before it, and not within the
6940 * tokens (attrs or values). An inspection of RFC2109 allows that
6941 * too but section 10.1.3 lets one think that spaces may be allowed
6942 * after the equal sign too, resulting in some (rare) buggy
6943 * implementations trying to do that. So let's do what servers do.
6944 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6945 * allowed quoted strings in values, with any possible character
6946 * after a backslash, including control chars and delimitors, which
6947 * causes parsing to become ambiguous. Browsers also allow spaces
6948 * within values even without quotes.
6949 *
6950 * We have to keep multiple pointers in order to support cookie
6951 * removal at the beginning, middle or end of header without
6952 * corrupting the header. All of these headers are valid :
6953 *
6954 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6955 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6956 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6957 * | | | | | | | | |
6958 * | | | | | | | | hdr_end <--+
6959 * | | | | | | | +--> next
6960 * | | | | | | +----> val_end
6961 * | | | | | +-----------> val_beg
6962 * | | | | +--------------> equal
6963 * | | | +----------------> att_end
6964 * | | +---------------------> att_beg
6965 * | +--------------------------> prev
6966 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6967 */
6968
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6969 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6970 /* Iterate through all cookies on this line */
6971
6972 /* find att_beg */
6973 att_beg = prev + 1;
6974 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6975 att_beg++;
6976
6977 /* find att_end : this is the first character after the last non
6978 * space before the equal. It may be equal to hdr_end.
6979 */
6980 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6981
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6982 while (equal < hdr_end) {
6983 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6984 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6985 if (http_is_spht[(unsigned char)*equal++])
6986 continue;
6987 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6988 }
6989
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6990 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6991 * is between <att_beg> and <equal>, both may be identical.
6992 */
6993
6994 /* look for end of cookie if there is an equal sign */
6995 if (equal < hdr_end && *equal == '=') {
6996 /* look for the beginning of the value */
6997 val_beg = equal + 1;
6998 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6999 val_beg++;
7000
7001 /* find the end of the value, respecting quotes */
7002 next = find_cookie_value_end(val_beg, hdr_end);
7003
7004 /* make val_end point to the first white space or delimitor after the value */
7005 val_end = next;
7006 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7007 val_end--;
7008 } else {
7009 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7010 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7011
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7012 /* We have nothing to do with attributes beginning with '$'. However,
7013 * they will automatically be removed if a header before them is removed,
7014 * since they're supposed to be linked together.
7015 */
7016 if (*att_beg == '$')
7017 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7018
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7019 /* Ignore cookies with no equal sign */
7020 if (equal == next) {
7021 /* This is not our cookie, so we must preserve it. But if we already
7022 * scheduled another cookie for removal, we cannot remove the
7023 * complete header, but we can remove the previous block itself.
7024 */
7025 preserve_hdr = 1;
7026 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7027 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7028 val_end += delta;
7029 next += delta;
7030 hdr_end += delta;
7031 hdr_next += delta;
7032 cur_hdr->len += delta;
7033 http_msg_move_end(&txn->req, delta);
7034 prev = del_from;
7035 del_from = NULL;
7036 }
7037 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7038 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7039
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7040 /* if there are spaces around the equal sign, we need to
7041 * strip them otherwise we'll get trouble for cookie captures,
7042 * or even for rewrites. Since this happens extremely rarely,
7043 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7044 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7045 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7046 int stripped_before = 0;
7047 int stripped_after = 0;
7048
7049 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7050 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7051 equal += stripped_before;
7052 val_beg += stripped_before;
7053 }
7054
7055 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7056 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7057 val_beg += stripped_after;
7058 stripped_before += stripped_after;
7059 }
7060
7061 val_end += stripped_before;
7062 next += stripped_before;
7063 hdr_end += stripped_before;
7064 hdr_next += stripped_before;
7065 cur_hdr->len += stripped_before;
7066 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7067 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7068 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7069
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7070 /* First, let's see if we want to capture this cookie. We check
7071 * that we don't already have a client side cookie, because we
7072 * can only capture one. Also as an optimisation, we ignore
7073 * cookies shorter than the declared name.
7074 */
7075 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7076 (val_end - att_beg >= t->fe->capture_namelen) &&
7077 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7078 int log_len = val_end - att_beg;
7079
7080 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7081 Alert("HTTP logging : out of memory.\n");
7082 } else {
7083 if (log_len > t->fe->capture_len)
7084 log_len = t->fe->capture_len;
7085 memcpy(txn->cli_cookie, att_beg, log_len);
7086 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7087 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7088 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7089
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7090 /* Persistence cookies in passive, rewrite or insert mode have the
7091 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7092 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7093 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7094 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7095 * For cookies in prefix mode, the form is :
7096 *
7097 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7098 */
7099 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7100 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
7101 struct server *srv = t->be->srv;
7102 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7103
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7104 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7105 * have the server ID between val_beg and delim, and the original cookie between
7106 * delim+1 and val_end. Otherwise, delim==val_end :
7107 *
7108 * Cookie: NAME=SRV; # in all but prefix modes
7109 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7110 * | || || | |+-> next
7111 * | || || | +--> val_end
7112 * | || || +---------> delim
7113 * | || |+------------> val_beg
7114 * | || +-------------> att_end = equal
7115 * | |+-----------------> att_beg
7116 * | +------------------> prev
7117 * +-------------------------> hdr_beg
7118 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7119
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7120 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7121 for (delim = val_beg; delim < val_end; delim++)
7122 if (*delim == COOKIE_DELIM)
7123 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7124 } else {
7125 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7126 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7127 /* Now check if the cookie contains a date field, which would
7128 * appear after a vertical bar ('|') just after the server name
7129 * and before the delimiter.
7130 */
7131 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7132 if (vbar1) {
7133 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7134 * right is the last seen date. It is a base64 encoded
7135 * 30-bit value representing the UNIX date since the
7136 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7137 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7138 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7139 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7140 if (val_end - vbar1 >= 5) {
7141 val = b64tos30(vbar1);
7142 if (val > 0)
7143 txn->cookie_last_date = val << 2;
7144 }
7145 /* look for a second vertical bar */
7146 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7147 if (vbar1 && (val_end - vbar1 > 5)) {
7148 val = b64tos30(vbar1 + 1);
7149 if (val > 0)
7150 txn->cookie_first_date = val << 2;
7151 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7152 }
7153 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7154
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7155 /* if the cookie has an expiration date and the proxy wants to check
7156 * it, then we do that now. We first check if the cookie is too old,
7157 * then only if it has expired. We detect strict overflow because the
7158 * time resolution here is not great (4 seconds). Cookies with dates
7159 * in the future are ignored if their offset is beyond one day. This
7160 * allows an admin to fix timezone issues without expiring everyone
7161 * and at the same time avoids keeping unwanted side effects for too
7162 * long.
7163 */
7164 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7165 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
7166 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7167 txn->flags &= ~TX_CK_MASK;
7168 txn->flags |= TX_CK_OLD;
7169 delim = val_beg; // let's pretend we have not found the cookie
7170 txn->cookie_first_date = 0;
7171 txn->cookie_last_date = 0;
7172 }
7173 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7174 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
7175 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7176 txn->flags &= ~TX_CK_MASK;
7177 txn->flags |= TX_CK_EXPIRED;
7178 delim = val_beg; // let's pretend we have not found the cookie
7179 txn->cookie_first_date = 0;
7180 txn->cookie_last_date = 0;
7181 }
7182
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7183 /* Here, we'll look for the first running server which supports the cookie.
7184 * This allows to share a same cookie between several servers, for example
7185 * to dedicate backup servers to specific servers only.
7186 * However, to prevent clients from sticking to cookie-less backup server
7187 * when they have incidentely learned an empty cookie, we simply ignore
7188 * empty cookies and mark them as invalid.
7189 * The same behaviour is applied when persistence must be ignored.
7190 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]7191 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7192 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7193
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7194 while (srv) {
7195 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7196 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
7197 if ((srv->state & SRV_RUNNING) ||
7198 (t->be->options & PR_O_PERSIST) ||
7199 (t->flags & SN_FORCE_PRST)) {
7200 /* we found the server and we can use it */
7201 txn->flags &= ~TX_CK_MASK;
7202 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
7203 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7204 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7205 break;
7206 } else {
7207 /* we found a server, but it's down,
7208 * mark it as such and go on in case
7209 * another one is available.
7210 */
7211 txn->flags &= ~TX_CK_MASK;
7212 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7213 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7214 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7215 srv = srv->next;
7216 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7217
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7218 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7219 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7220 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7221 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
7222 txn->flags |= TX_CK_UNUSED;
7223 else
7224 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7225 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7226
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7227 /* depending on the cookie mode, we may have to either :
7228 * - delete the complete cookie if we're in insert+indirect mode, so that
7229 * the server never sees it ;
7230 * - remove the server id from the cookie value, and tag the cookie as an
7231 * application cookie so that it does not get accidentely removed later,
7232 * if we're in cookie prefix mode
7233 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7234 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7235 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7236
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7237 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7238 val_end += delta;
7239 next += delta;
7240 hdr_end += delta;
7241 hdr_next += delta;
7242 cur_hdr->len += delta;
7243 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7244
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7245 del_from = NULL;
7246 preserve_hdr = 1; /* we want to keep this cookie */
7247 }
7248 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7249 (t->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]7250 del_from = prev;
7251 }
7252 } else {
7253 /* This is not our cookie, so we must preserve it. But if we already
7254 * scheduled another cookie for removal, we cannot remove the
7255 * complete header, but we can remove the previous block itself.
7256 */
7257 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7258
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7259 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7260 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7261 if (att_beg >= del_from)
7262 att_beg += delta;
7263 if (att_end >= del_from)
7264 att_end += delta;
7265 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7266 val_end += delta;
7267 next += delta;
7268 hdr_end += delta;
7269 hdr_next += delta;
7270 cur_hdr->len += delta;
7271 http_msg_move_end(&txn->req, delta);
7272 prev = del_from;
7273 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7274 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7275 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7276
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7277 /* Look for the appsession cookie unless persistence must be ignored */
7278 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
7279 int cmp_len, value_len;
7280 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7281
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7282 if (t->be->options2 & PR_O2_AS_PFX) {
7283 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7284 value_begin = att_beg + t->be->appsession_name_len;
7285 value_len = val_end - att_beg - t->be->appsession_name_len;
7286 } else {
7287 cmp_len = att_end - att_beg;
7288 value_begin = val_beg;
7289 value_len = val_end - val_beg;
7290 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7291
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7292 /* let's see if the cookie is our appcookie */
7293 if (cmp_len == t->be->appsession_name_len &&
7294 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
7295 manage_client_side_appsession(t, value_begin, value_len);
7296 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7297 }
7298
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7299 /* continue with next cookie on this header line */
7300 att_beg = next;
7301 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7302
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7303 /* There are no more cookies on this line.
7304 * We may still have one (or several) marked for deletion at the
7305 * end of the line. We must do this now in two ways :
7306 * - if some cookies must be preserved, we only delete from the
7307 * mark to the end of line ;
7308 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7309 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7310 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7311 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7312 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7313 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7314 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7315 cur_hdr->len += delta;
7316 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7317 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7318
7319 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7320 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7321 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7322 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7323 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7324 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7325 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7326 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7327 }
7328
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7329 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7330 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7331 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7332}
7333
7334
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7335/* Iterate the same filter through all response headers contained in <rtr>.
7336 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7337 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7338int apply_filter_to_resp_headers(struct session *t, struct channel *rtr, struct hdr_exp *exp)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7339{
7340 char term;
7341 char *cur_ptr, *cur_end, *cur_next;
7342 int cur_idx, old_idx, last_hdr;
7343 struct http_txn *txn = &t->txn;
7344 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7345 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7346
7347 last_hdr = 0;
7348
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7349 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7350 old_idx = 0;
7351
7352 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7353 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7354 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7355 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7356 (exp->action == ACT_ALLOW ||
7357 exp->action == ACT_DENY))
7358 return 0;
7359
7360 cur_idx = txn->hdr_idx.v[old_idx].next;
7361 if (!cur_idx)
7362 break;
7363
7364 cur_hdr = &txn->hdr_idx.v[cur_idx];
7365 cur_ptr = cur_next;
7366 cur_end = cur_ptr + cur_hdr->len;
7367 cur_next = cur_end + cur_hdr->cr + 1;
7368
7369 /* Now we have one header between cur_ptr and cur_end,
7370 * and the next header starts at cur_next.
7371 */
7372
7373 /* The annoying part is that pattern matching needs
7374 * that we modify the contents to null-terminate all
7375 * strings before testing them.
7376 */
7377
7378 term = *cur_end;
7379 *cur_end = '\0';
7380
7381 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7382 switch (exp->action) {
7383 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7384 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7385 last_hdr = 1;
7386 break;
7387
7388 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7389 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7390 last_hdr = 1;
7391 break;
7392
7393 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7394 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7395 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7396 /* FIXME: if the user adds a newline in the replacement, the
7397 * index will not be recalculated for now, and the new line
7398 * will not be counted as a new header.
7399 */
7400
7401 cur_end += delta;
7402 cur_next += delta;
7403 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7404 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7405 break;
7406
7407 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7408 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7409 cur_next += delta;
7410
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7411 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7412 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7413 txn->hdr_idx.used--;
7414 cur_hdr->len = 0;
7415 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7416 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7417 break;
7418
7419 }
7420 }
7421 if (cur_end)
7422 *cur_end = term; /* restore the string terminator */
7423
7424 /* keep the link from this header to next one in case of later
7425 * removal of next header.
7426 */
7427 old_idx = cur_idx;
7428 }
7429 return 0;
7430}
7431
7432
7433/* Apply the filter to the status line in the response buffer <rtr>.
7434 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7435 * or -1 if a replacement resulted in an invalid status line.
7436 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7437int apply_filter_to_sts_line(struct session *t, struct channel *rtr, struct hdr_exp *exp)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7438{
7439 char term;
7440 char *cur_ptr, *cur_end;
7441 int done;
7442 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7443 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7444
7445
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7446 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7447 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7448 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7449 (exp->action == ACT_ALLOW ||
7450 exp->action == ACT_DENY))
7451 return 0;
7452 else if (exp->action == ACT_REMOVE)
7453 return 0;
7454
7455 done = 0;
7456
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7457 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7458 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7459
7460 /* Now we have the status line between cur_ptr and cur_end */
7461
7462 /* The annoying part is that pattern matching needs
7463 * that we modify the contents to null-terminate all
7464 * strings before testing them.
7465 */
7466
7467 term = *cur_end;
7468 *cur_end = '\0';
7469
7470 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7471 switch (exp->action) {
7472 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7473 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7474 done = 1;
7475 break;
7476
7477 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7478 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7479 done = 1;
7480 break;
7481
7482 case ACT_REPLACE:
7483 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7484 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7485 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7486 /* FIXME: if the user adds a newline in the replacement, the
7487 * index will not be recalculated for now, and the new line
7488 * will not be counted as a new header.
7489 */
7490
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7491 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7492 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7493 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7494 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7495 cur_ptr, cur_end + 1,
7496 NULL, NULL);
7497 if (unlikely(!cur_end))
7498 return -1;
7499
7500 /* we have a full respnse and we know that we have either a CR
7501 * or an LF at <ptr>.
7502 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7503 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]7504 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]7505 /* there is no point trying this regex on headers */
7506 return 1;
7507 }
7508 }
7509 *cur_end = term; /* restore the string terminator */
7510 return done;
7511}
7512
7513
7514
7515/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7516 * 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]7517 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7518 * unparsable response.
7519 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7520int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7521{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7522 struct http_txn *txn = &s->txn;
7523 struct hdr_exp *exp;
7524
7525 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7526 int ret;
7527
7528 /*
7529 * The interleaving of transformations and verdicts
7530 * makes it difficult to decide to continue or stop
7531 * the evaluation.
7532 */
7533
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7534 if (txn->flags & TX_SVDENY)
7535 break;
7536
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7537 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7538 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7539 exp->action == ACT_PASS)) {
7540 exp = exp->next;
7541 continue;
7542 }
7543
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7544 /* if this filter had a condition, evaluate it now and skip to
7545 * next filter if the condition does not match.
7546 */
7547 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7548 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]7549 ret = acl_pass(ret);
7550 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7551 ret = !ret;
7552 if (!ret)
7553 continue;
7554 }
7555
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7556 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7557 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7558 if (unlikely(ret < 0))
7559 return -1;
7560
7561 if (likely(ret == 0)) {
7562 /* The filter did not match the response, it can be
7563 * iterated through all headers.
7564 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7565 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7566 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7567 }
7568 return 0;
7569}
7570
7571
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7572/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7573 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7574 * desirable to call it only when needed. This function is also used when we
7575 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7576 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7577void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7578{
7579 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7580 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7581 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7582 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7583 char *hdr_beg, *hdr_end, *hdr_next;
7584 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7585
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7586 /* Iterate through the headers.
7587 * we start with the start line.
7588 */
7589 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7590 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7591
7592 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7593 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7594 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7595
7596 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7597 hdr_beg = hdr_next;
7598 hdr_end = hdr_beg + cur_hdr->len;
7599 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7600
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7601 /* We have one full header between hdr_beg and hdr_end, and the
7602 * next header starts at hdr_next. We're only interested in
7603 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7604 */
7605
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7606 is_cookie2 = 0;
7607 prev = hdr_beg + 10;
7608 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7609 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7610 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7611 if (!val) {
7612 old_idx = cur_idx;
7613 continue;
7614 }
7615 is_cookie2 = 1;
7616 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7617 }
7618
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7619 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7620 * <prev> points to the colon.
7621 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7622 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7623
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7624 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7625 * check-cache is enabled) and we are not interested in checking
7626 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7627 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7628 if (t->be->cookie_name == NULL &&
7629 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7630 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7631 return;
7632
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7633 /* OK so now we know we have to process this response cookie.
7634 * The format of the Set-Cookie header is slightly different
7635 * from the format of the Cookie header in that it does not
7636 * support the comma as a cookie delimiter (thus the header
7637 * cannot be folded) because the Expires attribute described in
7638 * the original Netscape's spec may contain an unquoted date
7639 * with a comma inside. We have to live with this because
7640 * many browsers don't support Max-Age and some browsers don't
7641 * support quoted strings. However the Set-Cookie2 header is
7642 * clean.
7643 *
7644 * We have to keep multiple pointers in order to support cookie
7645 * removal at the beginning, middle or end of header without
7646 * corrupting the header (in case of set-cookie2). A special
7647 * pointer, <scav> points to the beginning of the set-cookie-av
7648 * fields after the first semi-colon. The <next> pointer points
7649 * either to the end of line (set-cookie) or next unquoted comma
7650 * (set-cookie2). All of these headers are valid :
7651 *
7652 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7653 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7654 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7655 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7656 * | | | | | | | | | |
7657 * | | | | | | | | +-> next hdr_end <--+
7658 * | | | | | | | +------------> scav
7659 * | | | | | | +--------------> val_end
7660 * | | | | | +--------------------> val_beg
7661 * | | | | +----------------------> equal
7662 * | | | +------------------------> att_end
7663 * | | +----------------------------> att_beg
7664 * | +------------------------------> prev
7665 * +-----------------------------------------> hdr_beg
7666 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7667
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7668 for (; prev < hdr_end; prev = next) {
7669 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7670
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7671 /* find att_beg */
7672 att_beg = prev + 1;
7673 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7674 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7675
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7676 /* find att_end : this is the first character after the last non
7677 * space before the equal. It may be equal to hdr_end.
7678 */
7679 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7680
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7681 while (equal < hdr_end) {
7682 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7683 break;
7684 if (http_is_spht[(unsigned char)*equal++])
7685 continue;
7686 att_end = equal;
7687 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7688
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7689 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7690 * is between <att_beg> and <equal>, both may be identical.
7691 */
7692
7693 /* look for end of cookie if there is an equal sign */
7694 if (equal < hdr_end && *equal == '=') {
7695 /* look for the beginning of the value */
7696 val_beg = equal + 1;
7697 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7698 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7699
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7700 /* find the end of the value, respecting quotes */
7701 next = find_cookie_value_end(val_beg, hdr_end);
7702
7703 /* make val_end point to the first white space or delimitor after the value */
7704 val_end = next;
7705 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7706 val_end--;
7707 } else {
7708 /* <equal> points to next comma, semi-colon or EOL */
7709 val_beg = val_end = next = equal;
7710 }
7711
7712 if (next < hdr_end) {
7713 /* Set-Cookie2 supports multiple cookies, and <next> points to
7714 * a colon or semi-colon before the end. So skip all attr-value
7715 * pairs and look for the next comma. For Set-Cookie, since
7716 * commas are permitted in values, skip to the end.
7717 */
7718 if (is_cookie2)
7719 next = find_hdr_value_end(next, hdr_end);
7720 else
7721 next = hdr_end;
7722 }
7723
7724 /* Now everything is as on the diagram above */
7725
7726 /* Ignore cookies with no equal sign */
7727 if (equal == val_end)
7728 continue;
7729
7730 /* If there are spaces around the equal sign, we need to
7731 * strip them otherwise we'll get trouble for cookie captures,
7732 * or even for rewrites. Since this happens extremely rarely,
7733 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7734 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7735 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7736 int stripped_before = 0;
7737 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7738
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7739 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7740 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7741 equal += stripped_before;
7742 val_beg += stripped_before;
7743 }
7744
7745 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7746 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7747 val_beg += stripped_after;
7748 stripped_before += stripped_after;
7749 }
7750
7751 val_end += stripped_before;
7752 next += stripped_before;
7753 hdr_end += stripped_before;
7754 hdr_next += stripped_before;
7755 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7756 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7757 }
7758
7759 /* First, let's see if we want to capture this cookie. We check
7760 * that we don't already have a server side cookie, because we
7761 * can only capture one. Also as an optimisation, we ignore
7762 * cookies shorter than the declared name.
7763 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7764 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7765 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7766 (val_end - att_beg >= t->fe->capture_namelen) &&
7767 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7768 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7769 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7770 Alert("HTTP logging : out of memory.\n");
7771 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7772 else {
7773 if (log_len > t->fe->capture_len)
7774 log_len = t->fe->capture_len;
7775 memcpy(txn->srv_cookie, att_beg, log_len);
7776 txn->srv_cookie[log_len] = 0;
7777 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7778 }
7779
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7780 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7781 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7782 if (!(t->flags & SN_IGNORE_PRST) &&
7783 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7784 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7785 /* assume passive cookie by default */
7786 txn->flags &= ~TX_SCK_MASK;
7787 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7788
7789 /* If the cookie is in insert mode on a known server, we'll delete
7790 * this occurrence because we'll insert another one later.
7791 * 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]7792 * a direct access.
7793 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7794 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7795 /* The "preserve" flag was set, we don't want to touch the
7796 * server's cookie.
7797 */
7798 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7799 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7800 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7801 /* this cookie must be deleted */
7802 if (*prev == ':' && next == hdr_end) {
7803 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7804 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7805 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7806 txn->hdr_idx.used--;
7807 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7808 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7809 hdr_next += delta;
7810 http_msg_move_end(&txn->rsp, delta);
7811 /* note: while both invalid now, <next> and <hdr_end>
7812 * are still equal, so the for() will stop as expected.
7813 */
7814 } else {
7815 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7816 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7817 next = prev;
7818 hdr_end += delta;
7819 hdr_next += delta;
7820 cur_hdr->len += delta;
7821 http_msg_move_end(&txn->rsp, delta);
7822 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7823 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7824 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7825 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7826 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7827 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7828 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7829 * with this server since we know it.
7830 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7831 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7832 next += delta;
7833 hdr_end += delta;
7834 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7835 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7836 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7837
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7838 txn->flags &= ~TX_SCK_MASK;
7839 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7840 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7841 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7842 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7843 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7844 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7845 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7846 next += delta;
7847 hdr_end += delta;
7848 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7849 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7850 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7851
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7852 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7853 txn->flags &= ~TX_SCK_MASK;
7854 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7855 }
7856 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7857 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7858 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7859 int cmp_len, value_len;
7860 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7861
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7862 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7863 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7864 value_begin = att_beg + t->be->appsession_name_len;
7865 value_len = MIN(t->be->appsession_len, val_end - att_beg - t->be->appsession_name_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7866 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7867 cmp_len = att_end - att_beg;
7868 value_begin = val_beg;
7869 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7870 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7871
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7872 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7873 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7874 /* free a possibly previously allocated memory */
7875 pool_free2(apools.sessid, txn->sessid);
7876
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7877 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7878 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7879 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7880 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7881 return;
7882 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7883 memcpy(txn->sessid, value_begin, value_len);
7884 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7885 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7886 }
7887 /* that's done for this cookie, check the next one on the same
7888 * line when next != hdr_end (only if is_cookie2).
7889 */
7890 }
7891 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7892 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7893 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7894
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7895 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7896 appsess *asession = NULL;
7897 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7898 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7899 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7900 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7901 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7902 Alert("Not enough Memory process_srv():asession:calloc().\n");
7903 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7904 return;
7905 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7906 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7907
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7908 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7909 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7910 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
Cyril Bonté41689c22010-01-10 00:30:14 +0100[diff] [blame]7911 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7912 return;
7913 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7914 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7915 asession->sessid[t->be->appsession_len] = 0;
7916
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7917 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7918 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7919 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7920 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
Cyril Bonté41689c22010-01-10 00:30:14 +0100[diff] [blame]7921 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7922 return;
7923 }
7924 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7925 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7926
7927 asession->request_count = 0;
7928 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7929 }
7930
7931 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7932 asession->request_count++;
7933 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7934}
7935
7936
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7937/*
7938 * Check if response is cacheable or not. Updates t->flags.
7939 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7940void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7941{
7942 struct http_txn *txn = &t->txn;
7943 char *p1, *p2;
7944
7945 char *cur_ptr, *cur_end, *cur_next;
7946 int cur_idx;
7947
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7948 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7949 return;
7950
7951 /* Iterate through the headers.
7952 * we start with the start line.
7953 */
7954 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7955 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7956
7957 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7958 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7959 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7960
7961 cur_hdr = &txn->hdr_idx.v[cur_idx];
7962 cur_ptr = cur_next;
7963 cur_end = cur_ptr + cur_hdr->len;
7964 cur_next = cur_end + cur_hdr->cr + 1;
7965
7966 /* We have one full header between cur_ptr and cur_end, and the
7967 * next header starts at cur_next. We're only interested in
7968 * "Cookie:" headers.
7969 */
7970
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7971 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7972 if (val) {
7973 if ((cur_end - (cur_ptr + val) >= 8) &&
7974 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7975 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7976 return;
7977 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7978 }
7979
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7980 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7981 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7982 continue;
7983
7984 /* OK, right now we know we have a cache-control header at cur_ptr */
7985
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7986 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7987
7988 if (p1 >= cur_end) /* no more info */
7989 continue;
7990
7991 /* p1 is at the beginning of the value */
7992 p2 = p1;
7993
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7994 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7995 p2++;
7996
7997 /* we have a complete value between p1 and p2 */
7998 if (p2 < cur_end && *p2 == '=') {
7999 /* we have something of the form no-cache="set-cookie" */
8000 if ((cur_end - p1 >= 21) &&
8001 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8002 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8003 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8004 continue;
8005 }
8006
8007 /* OK, so we know that either p2 points to the end of string or to a comma */
8008 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8009 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8010 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8011 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8012 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8013 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8014 return;
8015 }
8016
8017 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8018 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8019 continue;
8020 }
8021 }
8022}
8023
8024
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8025/*
8026 * Try to retrieve a known appsession in the URI, then the associated server.
8027 * If the server is found, it's assigned to the session.
8028 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8029void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8030{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8031 char *end_params, *first_param, *cur_param, *next_param;
8032 char separator;
8033 int value_len;
8034
8035 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8036
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]8037 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]8038 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST && t->txn.meth != HTTP_METH_HEAD)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8039 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8040 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8041
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8042 first_param = NULL;
8043 switch (mode) {
8044 case PR_O2_AS_M_PP:
8045 first_param = memchr(begin, ';', len);
8046 break;
8047 case PR_O2_AS_M_QS:
8048 first_param = memchr(begin, '?', len);
8049 break;
8050 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8051
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8052 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8053 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8054 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8055
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8056 switch (mode) {
8057 case PR_O2_AS_M_PP:
8058 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
8059 end_params = (char *) begin + len;
8060 }
8061 separator = ';';
8062 break;
8063 case PR_O2_AS_M_QS:
8064 end_params = (char *) begin + len;
8065 separator = '&';
8066 break;
8067 default:
8068 /* unknown mode, shouldn't happen */
8069 return;
8070 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8071
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8072 cur_param = next_param = end_params;
8073 while (cur_param > first_param) {
8074 cur_param--;
8075 if ((cur_param[0] == separator) || (cur_param == first_param)) {
8076 /* let's see if this is the appsession parameter */
8077 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
8078 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
8079 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
8080 /* Cool... it's the right one */
8081 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
8082 value_len = MIN(t->be->appsession_len, next_param - cur_param);
8083 if (value_len > 0) {
8084 manage_client_side_appsession(t, cur_param, value_len);
8085 }
8086 break;
8087 }
8088 next_param = cur_param;
8089 }
8090 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8091#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]8092 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]8093 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8094#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8095}
8096
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8097/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8098 * 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]8099 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8100 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8101 * 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]8102 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8103 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8104 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8105 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8106int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8107{
8108 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8109 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8110 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8111
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8112 if (!uri_auth)
8113 return 0;
8114
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8115 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]8116 return 0;
8117
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8118 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8119 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8120 return 0;
8121
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8122 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8123 return 0;
8124
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8125 return 1;
8126}
8127
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8128/*
8129 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8130 * By default it tries to report the error position as msg->err_pos. However if
8131 * this one is not set, it will then report msg->next, which is the last known
8132 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8133 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8134 */
8135void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8136 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8137 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8138{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8139 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8140 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8141
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8142 es->len = MIN(chn->buf->i, sizeof(es->buf));
8143 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8144 len1 = MIN(len1, es->len);
8145 len2 = es->len - len1; /* remaining data if buffer wraps */
8146
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8147 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8148 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8149 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8150
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8151 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8152 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8153 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8154 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8155
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8156 es->when = date; // user-visible date
8157 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8158 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8159 es->oe = other_end;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8160 if (objt_conn(s->req->prod->end))
8161 es->src = __objt_conn(s->req->prod->end)->addr.from;
8162 else
8163 memset(&es->src, 0, sizeof(es->src));
8164
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8165 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8166 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8167 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8168 es->s_flags = s->flags;
8169 es->t_flags = s->txn.flags;
8170 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8171 es->b_out = chn->buf->o;
8172 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8173 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8174 es->m_clen = msg->chunk_len;
8175 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8176}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8177
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8178/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8179 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8180 * performed over the whole headers. Otherwise it must contain a valid header
8181 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8182 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8183 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8184 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8185 * -1. The value fetch stops at commas, so this function is suited for use with
8186 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8187 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8188 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8189unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8190 struct hdr_idx *idx, int occ,
8191 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8192{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8193 struct hdr_ctx local_ctx;
8194 char *ptr_hist[MAX_HDR_HISTORY];
8195 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8196 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8197 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8198
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8199 if (!ctx) {
8200 local_ctx.idx = 0;
8201 ctx = &local_ctx;
8202 }
8203
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8204 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8205 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8206 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8207 occ--;
8208 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8209 *vptr = ctx->line + ctx->val;
8210 *vlen = ctx->vlen;
8211 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8212 }
8213 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8214 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8215 }
8216
8217 /* negative occurrence, we scan all the list then walk back */
8218 if (-occ > MAX_HDR_HISTORY)
8219 return 0;
8220
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8221 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8222 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8223 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8224 len_hist[hist_ptr] = ctx->vlen;
8225 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8226 hist_ptr = 0;
8227 found++;
8228 }
8229 if (-occ > found)
8230 return 0;
8231 /* 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]8232 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8233 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8234 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8235 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8236 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8237 if (hist_ptr >= MAX_HDR_HISTORY)
8238 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8239 *vptr = ptr_hist[hist_ptr];
8240 *vlen = len_hist[hist_ptr];
8241 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8242}
8243
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8244/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8245 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8246 * performed over the whole headers. Otherwise it must contain a valid header
8247 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8248 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8249 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8250 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8251 * -1. This function differs from http_get_hdr() in that it only returns full
8252 * line header values and does not stop at commas.
8253 * The return value is 0 if nothing was found, or non-zero otherwise.
8254 */
8255unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8256 struct hdr_idx *idx, int occ,
8257 struct hdr_ctx *ctx, char **vptr, int *vlen)
8258{
8259 struct hdr_ctx local_ctx;
8260 char *ptr_hist[MAX_HDR_HISTORY];
8261 int len_hist[MAX_HDR_HISTORY];
8262 unsigned int hist_ptr;
8263 int found;
8264
8265 if (!ctx) {
8266 local_ctx.idx = 0;
8267 ctx = &local_ctx;
8268 }
8269
8270 if (occ >= 0) {
8271 /* search from the beginning */
8272 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8273 occ--;
8274 if (occ <= 0) {
8275 *vptr = ctx->line + ctx->val;
8276 *vlen = ctx->vlen;
8277 return 1;
8278 }
8279 }
8280 return 0;
8281 }
8282
8283 /* negative occurrence, we scan all the list then walk back */
8284 if (-occ > MAX_HDR_HISTORY)
8285 return 0;
8286
8287 found = hist_ptr = 0;
8288 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8289 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8290 len_hist[hist_ptr] = ctx->vlen;
8291 if (++hist_ptr >= MAX_HDR_HISTORY)
8292 hist_ptr = 0;
8293 found++;
8294 }
8295 if (-occ > found)
8296 return 0;
8297 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8298 * find occurrence -occ, so we have to check [hist_ptr+occ].
8299 */
8300 hist_ptr += occ;
8301 if (hist_ptr >= MAX_HDR_HISTORY)
8302 hist_ptr -= MAX_HDR_HISTORY;
8303 *vptr = ptr_hist[hist_ptr];
8304 *vlen = len_hist[hist_ptr];
8305 return 1;
8306}
8307
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8308/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8309 * Print a debug line with a header. Always stop at the first CR or LF char,
8310 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8311 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8312 */
8313void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
8314{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8315 int max;
8316 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8317 dir,
8318 objt_conn(t->req->prod->end) ? (unsigned short)objt_conn(t->req->prod->end)->t.sock.fd : -1,
8319 objt_conn(t->req->cons->end) ? (unsigned short)objt_conn(t->req->cons->end)->t.sock.fd : -1);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8320
8321 for (max = 0; start + max < end; max++)
8322 if (start[max] == '\r' || start[max] == '\n')
8323 break;
8324
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8325 UBOUND(max, trash.size - trash.len - 3);
8326 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8327 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8328 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8329}
8330
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8331/*
8332 * Initialize a new HTTP transaction for session <s>. It is assumed that all
8333 * the required fields are properly allocated and that we only need to (re)init
8334 * them. This should be used before processing any new request.
8335 */
8336void http_init_txn(struct session *s)
8337{
8338 struct http_txn *txn = &s->txn;
8339 struct proxy *fe = s->fe;
8340
8341 txn->flags = 0;
8342 txn->status = -1;
8343
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8344 txn->cookie_first_date = 0;
8345 txn->cookie_last_date = 0;
8346
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8347 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8348 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8349 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8350 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8351 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8352 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8353 txn->req.chunk_len = 0LL;
8354 txn->req.body_len = 0LL;
8355 txn->rsp.chunk_len = 0LL;
8356 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8357 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8358 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8359 txn->req.chn = s->req;
8360 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8361
8362 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8363
8364 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8365 if (fe->options2 & PR_O2_REQBUG_OK)
8366 txn->req.err_pos = -1; /* let buggy requests pass */
8367
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8368 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8369 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8370
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8371 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8372 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8373
8374 if (txn->hdr_idx.v)
8375 hdr_idx_init(&txn->hdr_idx);
8376}
8377
8378/* to be used at the end of a transaction */
8379void http_end_txn(struct session *s)
8380{
8381 struct http_txn *txn = &s->txn;
8382
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]8383 /* release any possible compression context */
8384 if (s->flags & SN_COMP_READY)
8385 s->comp_algo->end(&s->comp_ctx);
8386 s->comp_algo = NULL;
8387 s->flags &= ~SN_COMP_READY;
8388
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8389 /* these ones will have been dynamically allocated */
8390 pool_free2(pool2_requri, txn->uri);
8391 pool_free2(pool2_capture, txn->cli_cookie);
8392 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8393 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8394 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8395
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8396 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8397 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8398 txn->uri = NULL;
8399 txn->srv_cookie = NULL;
8400 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8401
8402 if (txn->req.cap) {
8403 struct cap_hdr *h;
8404 for (h = s->fe->req_cap; h; h = h->next)
8405 pool_free2(h->pool, txn->req.cap[h->index]);
8406 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8407 }
8408
8409 if (txn->rsp.cap) {
8410 struct cap_hdr *h;
8411 for (h = s->fe->rsp_cap; h; h = h->next)
8412 pool_free2(h->pool, txn->rsp.cap[h->index]);
8413 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8414 }
8415
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8416}
8417
8418/* to be used at the end of a transaction to prepare a new one */
8419void http_reset_txn(struct session *s)
8420{
8421 http_end_txn(s);
8422 http_init_txn(s);
8423
8424 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8425 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8426 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8427 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8428 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8429 /* re-init store persistence */
8430 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8431 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8432
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8433 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8434
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8435 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8436
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8437 /* We must trim any excess data from the response buffer, because we
8438 * may have blocked an invalid response from a server that we don't
8439 * want to accidentely forward once we disable the analysers, nor do
8440 * we want those data to come along with next response. A typical
8441 * example of such data would be from a buggy server responding to
8442 * a HEAD with some data, or sending more than the advertised
8443 * content-length.
8444 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8445 if (unlikely(s->rep->buf->i))
8446 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8447
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8448 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8449 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8450
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8451 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8452 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8453
8454 s->req->rex = TICK_ETERNITY;
8455 s->req->wex = TICK_ETERNITY;
8456 s->req->analyse_exp = TICK_ETERNITY;
8457 s->rep->rex = TICK_ETERNITY;
8458 s->rep->wex = TICK_ETERNITY;
8459 s->rep->analyse_exp = TICK_ETERNITY;
8460}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8461
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8462void free_http_req_rules(struct list *r) {
8463 struct http_req_rule *tr, *pr;
8464
8465 list_for_each_entry_safe(pr, tr, r, list) {
8466 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8467 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8468 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8469
8470 free(pr);
8471 }
8472}
8473
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8474/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8475struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8476{
8477 struct http_req_rule *rule;
8478 int cur_arg;
8479
8480 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8481 if (!rule) {
8482 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8483 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8484 }
8485
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8486 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8487 rule->action = HTTP_REQ_ACT_ALLOW;
8488 cur_arg = 1;
8489 } else if (!strcmp(args[0], "deny")) {
8490 rule->action = HTTP_REQ_ACT_DENY;
8491 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8492 } else if (!strcmp(args[0], "tarpit")) {
8493 rule->action = HTTP_REQ_ACT_TARPIT;
8494 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8495 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8496 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8497 cur_arg = 1;
8498
8499 while(*args[cur_arg]) {
8500 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8501 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8502 cur_arg+=2;
8503 continue;
8504 } else
8505 break;
8506 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8507 } else if (!strcmp(args[0], "set-nice")) {
8508 rule->action = HTTP_REQ_ACT_SET_NICE;
8509 cur_arg = 1;
8510
8511 if (!*args[cur_arg] ||
8512 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8513 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8514 file, linenum, args[0]);
8515 goto out_err;
8516 }
8517 rule->arg.nice = atoi(args[cur_arg]);
8518 if (rule->arg.nice < -1024)
8519 rule->arg.nice = -1024;
8520 else if (rule->arg.nice > 1024)
8521 rule->arg.nice = 1024;
8522 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8523 } else if (!strcmp(args[0], "set-tos")) {
8524#ifdef IP_TOS
8525 char *err;
8526 rule->action = HTTP_REQ_ACT_SET_TOS;
8527 cur_arg = 1;
8528
8529 if (!*args[cur_arg] ||
8530 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8531 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8532 file, linenum, args[0]);
8533 goto out_err;
8534 }
8535
8536 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8537 if (err && *err != '\0') {
8538 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8539 file, linenum, err, args[0]);
8540 goto out_err;
8541 }
8542 cur_arg++;
8543#else
8544 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8545 goto out_err;
8546#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8547 } else if (!strcmp(args[0], "set-mark")) {
8548#ifdef SO_MARK
8549 char *err;
8550 rule->action = HTTP_REQ_ACT_SET_MARK;
8551 cur_arg = 1;
8552
8553 if (!*args[cur_arg] ||
8554 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8555 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8556 file, linenum, args[0]);
8557 goto out_err;
8558 }
8559
8560 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8561 if (err && *err != '\0') {
8562 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8563 file, linenum, err, args[0]);
8564 goto out_err;
8565 }
8566 cur_arg++;
8567 global.last_checks |= LSTCHK_NETADM;
8568#else
8569 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8570 goto out_err;
8571#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8572 } else if (!strcmp(args[0], "set-log-level")) {
8573 rule->action = HTTP_REQ_ACT_SET_LOGL;
8574 cur_arg = 1;
8575
8576 if (!*args[cur_arg] ||
8577 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8578 bad_log_level:
8579 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8580 file, linenum, args[0]);
8581 goto out_err;
8582 }
8583 if (strcmp(args[cur_arg], "silent") == 0)
8584 rule->arg.loglevel = -1;
8585 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8586 goto bad_log_level;
8587 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8588 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8589 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8590 cur_arg = 1;
8591
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8592 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8593 (*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]8594 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8595 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8596 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8597 }
8598
8599 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8600 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8601 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8602
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8603 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8604 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]8605 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8606 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8607 free(proxy->conf.lfs_file);
8608 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8609 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8610 cur_arg += 2;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8611 } else if (strcmp(args[0], "del-header") == 0) {
8612 rule->action = HTTP_REQ_ACT_DEL_HDR;
8613 cur_arg = 1;
8614
8615 if (!*args[cur_arg] ||
8616 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8617 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
8618 file, linenum, args[0]);
8619 goto out_err;
8620 }
8621
8622 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8623 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8624
8625 proxy->conf.args.ctx = ARGC_HRQ;
8626 free(proxy->conf.lfs_file);
8627 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8628 proxy->conf.lfs_line = proxy->conf.args.line;
8629 cur_arg += 1;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8630 } else if (strcmp(args[0], "redirect") == 0) {
8631 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]8632 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8633
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8634 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]8635 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8636 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8637 goto out_err;
8638 }
8639
8640 /* this redirect rule might already contain a parsed condition which
8641 * we'll pass to the http-request rule.
8642 */
8643 rule->action = HTTP_REQ_ACT_REDIR;
8644 rule->arg.redir = redir;
8645 rule->cond = redir->cond;
8646 redir->cond = NULL;
8647 cur_arg = 2;
8648 return rule;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8649 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8650 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', 'tarpit', 'add-header', 'set-header', 'set-nice', 'set-tos', 'set-mark', 'set-log-level', but got '%s'%s.\n",
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8651 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8652 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8653 }
8654
8655 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8656 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8657 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8658
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8659 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8660 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
8661 file, linenum, args[0], errmsg);
8662 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8663 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8664 }
8665 rule->cond = cond;
8666 }
8667 else if (*args[cur_arg]) {
8668 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
8669 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8670 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8671 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8672 }
8673
8674 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8675 out_err:
8676 free(rule);
8677 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8678}
8679
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8680/* parse an "http-respose" rule */
8681struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8682{
8683 struct http_res_rule *rule;
8684 int cur_arg;
8685
8686 rule = calloc(1, sizeof(*rule));
8687 if (!rule) {
8688 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
8689 goto out_err;
8690 }
8691
8692 if (!strcmp(args[0], "allow")) {
8693 rule->action = HTTP_RES_ACT_ALLOW;
8694 cur_arg = 1;
8695 } else if (!strcmp(args[0], "deny")) {
8696 rule->action = HTTP_RES_ACT_DENY;
8697 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8698 } else if (!strcmp(args[0], "set-nice")) {
8699 rule->action = HTTP_RES_ACT_SET_NICE;
8700 cur_arg = 1;
8701
8702 if (!*args[cur_arg] ||
8703 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8704 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
8705 file, linenum, args[0]);
8706 goto out_err;
8707 }
8708 rule->arg.nice = atoi(args[cur_arg]);
8709 if (rule->arg.nice < -1024)
8710 rule->arg.nice = -1024;
8711 else if (rule->arg.nice > 1024)
8712 rule->arg.nice = 1024;
8713 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8714 } else if (!strcmp(args[0], "set-tos")) {
8715#ifdef IP_TOS
8716 char *err;
8717 rule->action = HTTP_RES_ACT_SET_TOS;
8718 cur_arg = 1;
8719
8720 if (!*args[cur_arg] ||
8721 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8722 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8723 file, linenum, args[0]);
8724 goto out_err;
8725 }
8726
8727 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8728 if (err && *err != '\0') {
8729 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8730 file, linenum, err, args[0]);
8731 goto out_err;
8732 }
8733 cur_arg++;
8734#else
8735 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8736 goto out_err;
8737#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8738 } else if (!strcmp(args[0], "set-mark")) {
8739#ifdef SO_MARK
8740 char *err;
8741 rule->action = HTTP_RES_ACT_SET_MARK;
8742 cur_arg = 1;
8743
8744 if (!*args[cur_arg] ||
8745 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8746 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8747 file, linenum, args[0]);
8748 goto out_err;
8749 }
8750
8751 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8752 if (err && *err != '\0') {
8753 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8754 file, linenum, err, args[0]);
8755 goto out_err;
8756 }
8757 cur_arg++;
8758 global.last_checks |= LSTCHK_NETADM;
8759#else
8760 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8761 goto out_err;
8762#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8763 } else if (!strcmp(args[0], "set-log-level")) {
8764 rule->action = HTTP_RES_ACT_SET_LOGL;
8765 cur_arg = 1;
8766
8767 if (!*args[cur_arg] ||
8768 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8769 bad_log_level:
8770 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
8771 file, linenum, args[0]);
8772 goto out_err;
8773 }
8774 if (strcmp(args[cur_arg], "silent") == 0)
8775 rule->arg.loglevel = -1;
8776 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
8777 goto bad_log_level;
8778 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8779 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8780 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
8781 cur_arg = 1;
8782
8783 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8784 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
8785 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
8786 file, linenum, args[0]);
8787 goto out_err;
8788 }
8789
8790 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8791 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8792 LIST_INIT(&rule->arg.hdr_add.fmt);
8793
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8794 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8795 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]8796 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
8797 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8798 free(proxy->conf.lfs_file);
8799 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8800 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8801 cur_arg += 2;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8802 } else if (strcmp(args[0], "del-header") == 0) {
8803 rule->action = HTTP_RES_ACT_DEL_HDR;
8804 cur_arg = 1;
8805
8806 if (!*args[cur_arg] ||
8807 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8808 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
8809 file, linenum, args[0]);
8810 goto out_err;
8811 }
8812
8813 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8814 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8815
8816 proxy->conf.args.ctx = ARGC_HRS;
8817 free(proxy->conf.lfs_file);
8818 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8819 proxy->conf.lfs_line = proxy->conf.args.line;
8820 cur_arg += 1;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8821 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8822 Alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', 'add-header', 'set-header', 'set-nice', 'set-tos', 'set-mark', 'set-log-level', but got '%s'%s.\n",
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8823 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
8824 goto out_err;
8825 }
8826
8827 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8828 struct acl_cond *cond;
8829 char *errmsg = NULL;
8830
8831 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8832 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
8833 file, linenum, args[0], errmsg);
8834 free(errmsg);
8835 goto out_err;
8836 }
8837 rule->cond = cond;
8838 }
8839 else if (*args[cur_arg]) {
8840 Alert("parsing [%s:%d]: 'http-response %s' expects"
8841 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8842 file, linenum, args[0], args[cur_arg]);
8843 goto out_err;
8844 }
8845
8846 return rule;
8847 out_err:
8848 free(rule);
8849 return NULL;
8850}
8851
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8852/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8853 * with <err> filled with the error message. If <use_fmt> is not null, builds a
8854 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8855 */
8856struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8857 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8858{
8859 struct redirect_rule *rule;
8860 int cur_arg;
8861 int type = REDIRECT_TYPE_NONE;
8862 int code = 302;
8863 const char *destination = NULL;
8864 const char *cookie = NULL;
8865 int cookie_set = 0;
8866 unsigned int flags = REDIRECT_FLAG_NONE;
8867 struct acl_cond *cond = NULL;
8868
8869 cur_arg = 0;
8870 while (*(args[cur_arg])) {
8871 if (strcmp(args[cur_arg], "location") == 0) {
8872 if (!*args[cur_arg + 1])
8873 goto missing_arg;
8874
8875 type = REDIRECT_TYPE_LOCATION;
8876 cur_arg++;
8877 destination = args[cur_arg];
8878 }
8879 else if (strcmp(args[cur_arg], "prefix") == 0) {
8880 if (!*args[cur_arg + 1])
8881 goto missing_arg;
8882
8883 type = REDIRECT_TYPE_PREFIX;
8884 cur_arg++;
8885 destination = args[cur_arg];
8886 }
8887 else if (strcmp(args[cur_arg], "scheme") == 0) {
8888 if (!*args[cur_arg + 1])
8889 goto missing_arg;
8890
8891 type = REDIRECT_TYPE_SCHEME;
8892 cur_arg++;
8893 destination = args[cur_arg];
8894 }
8895 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
8896 if (!*args[cur_arg + 1])
8897 goto missing_arg;
8898
8899 cur_arg++;
8900 cookie = args[cur_arg];
8901 cookie_set = 1;
8902 }
8903 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
8904 if (!*args[cur_arg + 1])
8905 goto missing_arg;
8906
8907 cur_arg++;
8908 cookie = args[cur_arg];
8909 cookie_set = 0;
8910 }
8911 else if (strcmp(args[cur_arg], "code") == 0) {
8912 if (!*args[cur_arg + 1])
8913 goto missing_arg;
8914
8915 cur_arg++;
8916 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8917 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8918 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8919 "'%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]8920 args[cur_arg - 1], args[cur_arg]);
8921 return NULL;
8922 }
8923 }
8924 else if (!strcmp(args[cur_arg],"drop-query")) {
8925 flags |= REDIRECT_FLAG_DROP_QS;
8926 }
8927 else if (!strcmp(args[cur_arg],"append-slash")) {
8928 flags |= REDIRECT_FLAG_APPEND_SLASH;
8929 }
8930 else if (strcmp(args[cur_arg], "if") == 0 ||
8931 strcmp(args[cur_arg], "unless") == 0) {
8932 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
8933 if (!cond) {
8934 memprintf(errmsg, "error in condition: %s", *errmsg);
8935 return NULL;
8936 }
8937 break;
8938 }
8939 else {
8940 memprintf(errmsg,
8941 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
8942 args[cur_arg]);
8943 return NULL;
8944 }
8945 cur_arg++;
8946 }
8947
8948 if (type == REDIRECT_TYPE_NONE) {
8949 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
8950 return NULL;
8951 }
8952
8953 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
8954 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]8955 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8956
8957 if (!use_fmt) {
8958 /* old-style static redirect rule */
8959 rule->rdr_str = strdup(destination);
8960 rule->rdr_len = strlen(destination);
8961 }
8962 else {
8963 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8964
8965 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
8966 * if prefix == "/", we don't want to add anything, otherwise it
8967 * makes it hard for the user to configure a self-redirection.
8968 */
8969 proxy->conf.args.ctx = ARGC_RDR;
8970 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8971 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]8972 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8973 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8974 free(curproxy->conf.lfs_file);
8975 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
8976 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8977 }
8978 }
8979
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8980 if (cookie) {
8981 /* depending on cookie_set, either we want to set the cookie, or to clear it.
8982 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
8983 */
8984 rule->cookie_len = strlen(cookie);
8985 if (cookie_set) {
8986 rule->cookie_str = malloc(rule->cookie_len + 10);
8987 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8988 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
8989 rule->cookie_len += 9;
8990 } else {
8991 rule->cookie_str = malloc(rule->cookie_len + 21);
8992 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8993 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
8994 rule->cookie_len += 20;
8995 }
8996 }
8997 rule->type = type;
8998 rule->code = code;
8999 rule->flags = flags;
9000 LIST_INIT(&rule->list);
9001 return rule;
9002
9003 missing_arg:
9004 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9005 return NULL;
9006}
9007
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9008/************************************************************************/
9009/* The code below is dedicated to ACL parsing and matching */
9010/************************************************************************/
9011
9012
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9013/* This function ensures that the prerequisites for an L7 fetch are ready,
9014 * which means that a request or response is ready. If some data is missing,
9015 * 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]9016 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9017 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9018 *
9019 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9020 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9021 * decide whether or not an HTTP message is present ;
9022 * 0 if the requested data cannot be fetched or if it is certain that
9023 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9024 * 1 if an HTTP message is ready
9025 */
9026static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9027smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9028 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9029{
9030 struct http_txn *txn = l7;
9031 struct http_msg *msg = &txn->req;
9032
9033 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9034 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9035 */
9036
9037 if (unlikely(!s || !txn))
9038 return 0;
9039
9040 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9041 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9042
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9043 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9044 if (unlikely(!s->req))
9045 return 0;
9046
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9047 /* If the buffer does not leave enough free space at the end,
9048 * we must first realign it.
9049 */
9050 if (s->req->buf->p > s->req->buf->data &&
9051 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
9052 buffer_slow_realign(s->req->buf);
9053
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9054 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9055 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9056 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9057
9058 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9059 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9060 http_msg_analyzer(msg, &txn->hdr_idx);
9061
9062 /* Still no valid request ? */
9063 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9064 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9065 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9066 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9067 }
9068 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9069 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9070 return 0;
9071 }
9072
9073 /* OK we just got a valid HTTP request. We have some minor
9074 * preparation to perform so that further checks can rely
9075 * on HTTP tests.
9076 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9077
9078 /* If the request was parsed but was too large, we must absolutely
9079 * return an error so that it is not processed. At the moment this
9080 * cannot happen, but if the parsers are to change in the future,
9081 * we want this check to be maintained.
9082 */
9083 if (unlikely(s->req->buf->i + s->req->buf->p >
9084 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
9085 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9086 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9087 return 1;
9088 }
9089
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9090 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9091 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
9092 s->flags |= SN_REDIRECTABLE;
9093
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9094 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
9095 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9096 }
9097
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9098 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9099 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9100 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9101
9102 /* otherwise everything's ready for the request */
9103 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9104 else {
9105 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9106 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
9107 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9108 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9109 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9110 }
9111
9112 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9113 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9114 return 1;
9115}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9116
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9117#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9118 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]9119
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9120#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9121 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]9122
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9123
9124/* 1. Check on METHOD
9125 * We use the pre-parsed method if it is known, and store its number as an
9126 * integer. If it is unknown, we use the pointer and the length.
9127 */
Thierry FOURNIERedc15c32013-12-13 15:36:59 +0100[diff] [blame]9128static int pat_parse_meth(const char *text, struct pattern *pattern, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9129{
9130 int len, meth;
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]9131 struct chunk *trash;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9132
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]9133 len = strlen(text);
9134 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9135
9136 pattern->val.i = meth;
9137 if (meth == HTTP_METH_OTHER) {
Thierry FOURNIERedc15c32013-12-13 15:36:59 +0100[diff] [blame]9138 trash = get_trash_chunk();
9139 if (trash->size < len) {
9140 memprintf(err, "no space avalaible in the buffer. expect %d, provides %d",
9141 len, trash->size);
9142 return 0;
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]9143 }
Thierry FOURNIERedc15c32013-12-13 15:36:59 +0100[diff] [blame]9144 pattern->ptr.str = trash->str;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9145 pattern->len = len;
9146 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9147 else {
9148 pattern->ptr.str = NULL;
9149 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9150 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9151 return 1;
9152}
9153
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9154/* This function fetches the method of current HTTP request and stores
9155 * it in the global pattern struct as a chunk. There are two possibilities :
9156 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
9157 * in <len> and <ptr> is NULL ;
9158 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
9159 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9160 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9161 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9162static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9163smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9164 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9165{
9166 int meth;
9167 struct http_txn *txn = l7;
9168
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9169 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9170
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9171 meth = txn->meth;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9172 smp->type = SMP_T_METH;
9173 smp->data.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9174 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9175 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
9176 /* ensure the indexes are not affected */
9177 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9178 smp->flags |= SMP_F_CONST;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9179 smp->data.meth.str.len = txn->req.sl.rq.m_l;
9180 smp->data.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9181 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9182 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9183 return 1;
9184}
9185
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9186/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9187static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9188{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9189 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9190 struct pattern_list *lst;
9191 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9192
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9193 list_for_each_entry(lst, &expr->patterns, list) {
9194 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9195
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9196 /* well-known method */
9197 if (pattern->val.i != HTTP_METH_OTHER) {
9198 if (smp->data.meth.meth == pattern->val.i)
9199 return pattern;
9200 else
9201 continue;
9202 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9203
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9204 /* Other method, we must compare the strings */
9205 if (pattern->len != smp->data.meth.str.len)
9206 continue;
9207
9208 icase = pattern->flags & PAT_F_IGNORE_CASE;
9209 if ((icase && strncasecmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) != 0) ||
9210 (!icase && strncmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) != 0))
9211 return pattern;
9212 }
9213 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9214}
9215
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9216static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9217smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9218 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9219{
9220 struct http_txn *txn = l7;
9221 char *ptr;
9222 int len;
9223
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9224 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9225
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9226 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9227 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9228
9229 while ((len-- > 0) && (*ptr++ != '/'));
9230 if (len <= 0)
9231 return 0;
9232
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9233 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9234 smp->data.str.str = ptr;
9235 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9236
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9237 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9238 return 1;
9239}
9240
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9241static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9242smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9243 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9244{
9245 struct http_txn *txn = l7;
9246 char *ptr;
9247 int len;
9248
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9249 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9250
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9251 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9252 return 0;
9253
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9254 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9255 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9256
9257 while ((len-- > 0) && (*ptr++ != '/'));
9258 if (len <= 0)
9259 return 0;
9260
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9261 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9262 smp->data.str.str = ptr;
9263 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9264
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9265 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9266 return 1;
9267}
9268
9269/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9270static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9271smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9272 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9273{
9274 struct http_txn *txn = l7;
9275 char *ptr;
9276 int len;
9277
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9278 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9279
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9280 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9281 return 0;
9282
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9283 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9284 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9285
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9286 smp->type = SMP_T_UINT;
9287 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9288 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9289 return 1;
9290}
9291
9292/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9293static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9294smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9295 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9296{
9297 struct http_txn *txn = l7;
9298
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9299 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9300
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9301 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9302 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9303 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9304 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9305 return 1;
9306}
9307
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9308static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9309smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9310 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9311{
9312 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9313 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9314
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9315 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9316
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]9317 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]9318 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]9319 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9320
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9321 smp->type = SMP_T_IPV4;
9322 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9323 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9324 return 1;
9325}
9326
9327static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9328smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9329 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9330{
9331 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9332 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9333
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9334 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9335
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]9336 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]9337 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
9338 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9339
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9340 smp->type = SMP_T_UINT;
9341 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]9342 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9343 return 1;
9344}
9345
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9346/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9347 * Accepts an optional argument of type string containing the header field name,
9348 * and an optional argument of type signed or unsigned integer to request an
9349 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9350 * headers are considered from the first one. It does not stop on commas and
9351 * returns full lines instead (useful for User-Agent or Date for example).
9352 */
9353static int
9354smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9355 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9356{
9357 struct http_txn *txn = l7;
9358 struct hdr_idx *idx = &txn->hdr_idx;
9359 struct hdr_ctx *ctx = smp->ctx.a[0];
9360 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9361 int occ = 0;
9362 const char *name_str = NULL;
9363 int name_len = 0;
9364
9365 if (!ctx) {
9366 /* first call */
9367 ctx = &static_hdr_ctx;
9368 ctx->idx = 0;
9369 smp->ctx.a[0] = ctx;
9370 }
9371
9372 if (args) {
9373 if (args[0].type != ARGT_STR)
9374 return 0;
9375 name_str = args[0].data.str.str;
9376 name_len = args[0].data.str.len;
9377
9378 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9379 occ = args[1].data.uint;
9380 }
9381
9382 CHECK_HTTP_MESSAGE_FIRST();
9383
9384 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
9385 /* search for header from the beginning */
9386 ctx->idx = 0;
9387
9388 if (!occ && !(opt & SMP_OPT_ITERATE))
9389 /* no explicit occurrence and single fetch => last header by default */
9390 occ = -1;
9391
9392 if (!occ)
9393 /* prepare to report multiple occurrences for ACL fetches */
9394 smp->flags |= SMP_F_NOT_LAST;
9395
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9396 smp->type = SMP_T_STR;
9397 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9398 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
9399 return 1;
9400
9401 smp->flags &= ~SMP_F_NOT_LAST;
9402 return 0;
9403}
9404
9405/* 6. Check on HTTP header count. The number of occurrences is returned.
9406 * Accepts exactly 1 argument of type string. It does not stop on commas and
9407 * returns full lines instead (useful for User-Agent or Date for example).
9408 */
9409static int
9410smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9411 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9412{
9413 struct http_txn *txn = l7;
9414 struct hdr_idx *idx = &txn->hdr_idx;
9415 struct hdr_ctx ctx;
9416 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9417 int cnt;
9418
9419 if (!args || args->type != ARGT_STR)
9420 return 0;
9421
9422 CHECK_HTTP_MESSAGE_FIRST();
9423
9424 ctx.idx = 0;
9425 cnt = 0;
9426 while (http_find_full_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
9427 cnt++;
9428
9429 smp->type = SMP_T_UINT;
9430 smp->data.uint = cnt;
9431 smp->flags = SMP_F_VOL_HDR;
9432 return 1;
9433}
9434
9435/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9436 * Accepts an optional argument of type string containing the header field name,
9437 * and an optional argument of type signed or unsigned integer to request an
9438 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9439 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9440 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9441static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9442smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9443 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9444{
9445 struct http_txn *txn = l7;
9446 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9447 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9448 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]9449 int occ = 0;
9450 const char *name_str = NULL;
9451 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9452
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9453 if (!ctx) {
9454 /* first call */
9455 ctx = &static_hdr_ctx;
9456 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]9457 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9458 }
9459
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9460 if (args) {
9461 if (args[0].type != ARGT_STR)
9462 return 0;
9463 name_str = args[0].data.str.str;
9464 name_len = args[0].data.str.len;
9465
9466 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9467 occ = args[1].data.uint;
9468 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9469
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9470 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9471
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9472 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9473 /* search for header from the beginning */
9474 ctx->idx = 0;
9475
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9476 if (!occ && !(opt & SMP_OPT_ITERATE))
9477 /* no explicit occurrence and single fetch => last header by default */
9478 occ = -1;
9479
9480 if (!occ)
9481 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9482 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]9483
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9484 smp->type = SMP_T_STR;
9485 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9486 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]9487 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9488
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9489 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9490 return 0;
9491}
9492
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9493/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9494 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9495 */
9496static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9497smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9498 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9499{
9500 struct http_txn *txn = l7;
9501 struct hdr_idx *idx = &txn->hdr_idx;
9502 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9503 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]9504 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9505
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9506 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9507 return 0;
9508
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9509 CHECK_HTTP_MESSAGE_FIRST();
9510
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9511 ctx.idx = 0;
9512 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9513 while (http_find_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9514 cnt++;
9515
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9516 smp->type = SMP_T_UINT;
9517 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9518 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9519 return 1;
9520}
9521
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9522/* Fetch an HTTP header's integer value. The integer value is returned. It
9523 * takes a mandatory argument of type string and an optional one of type int
9524 * to designate a specific occurrence. It returns an unsigned integer, which
9525 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9526 */
9527static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9528smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9529 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9530{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9531 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9532
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9533 if (ret > 0) {
9534 smp->type = SMP_T_UINT;
9535 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9536 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9537
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9538 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9539}
9540
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9541/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
9542 * and an optional one of type int to designate a specific occurrence.
9543 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9544 */
9545static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9546smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9547 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9548{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9549 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9550
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9551 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9552 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
9553 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9554 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9555 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9556 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9557 if (smp->data.str.len < temp->size - 1) {
9558 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
9559 temp->str[smp->data.str.len] = '\0';
9560 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
9561 smp->type = SMP_T_IPV6;
9562 break;
9563 }
9564 }
9565 }
9566
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9567 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9568 if (!(smp->flags & SMP_F_NOT_LAST))
9569 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9570 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9571 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9572}
9573
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9574/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
9575 * the first '/' after the possible hostname, and ends before the possible '?'.
9576 */
9577static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9578smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9579 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9580{
9581 struct http_txn *txn = l7;
9582 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9583
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9584 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9585
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9586 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]9587 ptr = http_get_path(txn);
9588 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9589 return 0;
9590
9591 /* OK, we got the '/' ! */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9592 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9593 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9594
9595 while (ptr < end && *ptr != '?')
9596 ptr++;
9597
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9598 smp->data.str.len = ptr - smp->data.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9599 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9600 return 1;
9601}
9602
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9603/* This produces a concatenation of the first occurrence of the Host header
9604 * followed by the path component if it begins with a slash ('/'). This means
9605 * that '*' will not be added, resulting in exactly the first Host entry.
9606 * If no Host header is found, then the path is returned as-is. The returned
9607 * 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]9608 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9609 */
9610static int
9611smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9612 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9613{
9614 struct http_txn *txn = l7;
9615 char *ptr, *end, *beg;
9616 struct hdr_ctx ctx;
9617
9618 CHECK_HTTP_MESSAGE_FIRST();
9619
9620 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9621 if (!http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx) ||
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9622 !ctx.vlen)
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9623 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9624
9625 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]9626 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9627 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]9628 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9629 smp->data.str.len = ctx.vlen;
9630
9631 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9632 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9633 beg = http_get_path(txn);
9634 if (!beg)
9635 beg = end;
9636
9637 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9638
9639 if (beg < ptr && *beg == '/') {
9640 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
9641 smp->data.str.len += ptr - beg;
9642 }
9643
9644 smp->flags = SMP_F_VOL_1ST;
9645 return 1;
9646}
9647
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9648/* This produces a 32-bit hash of the concatenation of the first occurrence of
9649 * the Host header followed by the path component if it begins with a slash ('/').
9650 * This means that '*' will not be added, resulting in exactly the first Host
9651 * 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]9652 * is hashed using the path hash followed by a full avalanche hash and provides a
9653 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9654 * high-traffic sites without having to store whole paths.
9655 */
9656static int
9657smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9658 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9659{
9660 struct http_txn *txn = l7;
9661 struct hdr_ctx ctx;
9662 unsigned int hash = 0;
9663 char *ptr, *beg, *end;
9664 int len;
9665
9666 CHECK_HTTP_MESSAGE_FIRST();
9667
9668 ctx.idx = 0;
9669 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
9670 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
9671 ptr = ctx.line + ctx.val;
9672 len = ctx.vlen;
9673 while (len--)
9674 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
9675 }
9676
9677 /* now retrieve the path */
9678 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
9679 beg = http_get_path(txn);
9680 if (!beg)
9681 beg = end;
9682
9683 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9684
9685 if (beg < ptr && *beg == '/') {
9686 while (beg < ptr)
9687 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
9688 }
9689 hash = full_hash(hash);
9690
9691 smp->type = SMP_T_UINT;
9692 smp->data.uint = hash;
9693 smp->flags = SMP_F_VOL_1ST;
9694 return 1;
9695}
9696
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9697/* 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]9698 * path as returned by smp_fetch_base32(). The idea is to have per-source and
9699 * per-path counters. The result is a binary block from 8 to 20 bytes depending
9700 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9701 * that in environments where IPv6 is insignificant, truncating the output to
9702 * 8 bytes would still work.
9703 */
9704static int
9705smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9706 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9707{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9708 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9709 struct connection *cli_conn = objt_conn(l4->si[0].end);
9710
9711 if (!cli_conn)
9712 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9713
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9714 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9715 return 0;
9716
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9717 temp = get_trash_chunk();
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9718 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
9719 temp->len += sizeof(smp->data.uint);
9720
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9721 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9722 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9723 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]9724 temp->len += 4;
9725 break;
9726 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9727 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]9728 temp->len += 16;
9729 break;
9730 default:
9731 return 0;
9732 }
9733
9734 smp->data.str = *temp;
9735 smp->type = SMP_T_BIN;
9736 return 1;
9737}
9738
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9739static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9740smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9741 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9742{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9743 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9744 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9745 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9746
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9747 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9748
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9749 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9750 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9751 return 1;
9752}
9753
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9754/* return a valid test if the current request is the first one on the connection */
9755static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9756smp_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]9757 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9758{
9759 if (!s)
9760 return 0;
9761
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9762 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9763 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9764 return 1;
9765}
9766
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9767/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9768static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9769smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9770 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9771{
9772
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9773 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9774 return 0;
9775
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9776 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9777
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9778 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9779 return 0;
9780
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9781 smp->type = SMP_T_BOOL;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]9782 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]9783 return 1;
9784}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9785
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9786/* Accepts exactly 1 argument of type userlist */
9787static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9788smp_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]9789 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9790{
9791
9792 if (!args || args->type != ARGT_USR)
9793 return 0;
9794
9795 CHECK_HTTP_MESSAGE_FIRST();
9796
9797 if (!get_http_auth(l4))
9798 return 0;
9799
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9800 /* if the user does not belong to the userlist or has a wrong password,
9801 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]9802 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9803 */
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]9804 if (!check_user(args->data.usr, l4->txn.auth.user, l4->txn.auth.pass))
9805 return 0;
9806
9807 /* pat_match_auth() will need the user list */
9808 smp->ctx.a[0] = args->data.usr;
9809
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9810 smp->type = SMP_T_STR;
9811 smp->flags = SMP_F_CONST;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]9812 smp->data.str.str = l4->txn.auth.user;
9813 smp->data.str.len = strlen(l4->txn.auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9814
9815 return 1;
9816}
9817
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9818/* Try to find the next occurrence of a cookie name in a cookie header value.
9819 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
9820 * the cookie value is returned into *value and *value_l, and the function
9821 * returns a pointer to the next pointer to search from if the value was found.
9822 * Otherwise if the cookie was not found, NULL is returned and neither value
9823 * nor value_l are touched. The input <hdr> string should first point to the
9824 * header's value, and the <hdr_end> pointer must point to the first character
9825 * not part of the value. <list> must be non-zero if value may represent a list
9826 * of values (cookie headers). This makes it faster to abort parsing when no
9827 * list is expected.
9828 */
9829static char *
9830extract_cookie_value(char *hdr, const char *hdr_end,
9831 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]9832 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9833{
9834 char *equal, *att_end, *att_beg, *val_beg, *val_end;
9835 char *next;
9836
9837 /* we search at least a cookie name followed by an equal, and more
9838 * generally something like this :
9839 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
9840 */
9841 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
9842 /* Iterate through all cookies on this line */
9843
9844 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
9845 att_beg++;
9846
9847 /* find att_end : this is the first character after the last non
9848 * space before the equal. It may be equal to hdr_end.
9849 */
9850 equal = att_end = att_beg;
9851
9852 while (equal < hdr_end) {
9853 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
9854 break;
9855 if (http_is_spht[(unsigned char)*equal++])
9856 continue;
9857 att_end = equal;
9858 }
9859
9860 /* here, <equal> points to '=', a delimitor or the end. <att_end>
9861 * is between <att_beg> and <equal>, both may be identical.
9862 */
9863
9864 /* look for end of cookie if there is an equal sign */
9865 if (equal < hdr_end && *equal == '=') {
9866 /* look for the beginning of the value */
9867 val_beg = equal + 1;
9868 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
9869 val_beg++;
9870
9871 /* find the end of the value, respecting quotes */
9872 next = find_cookie_value_end(val_beg, hdr_end);
9873
9874 /* make val_end point to the first white space or delimitor after the value */
9875 val_end = next;
9876 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
9877 val_end--;
9878 } else {
9879 val_beg = val_end = next = equal;
9880 }
9881
9882 /* We have nothing to do with attributes beginning with '$'. However,
9883 * they will automatically be removed if a header before them is removed,
9884 * since they're supposed to be linked together.
9885 */
9886 if (*att_beg == '$')
9887 continue;
9888
9889 /* Ignore cookies with no equal sign */
9890 if (equal == next)
9891 continue;
9892
9893 /* Now we have the cookie name between att_beg and att_end, and
9894 * its value between val_beg and val_end.
9895 */
9896
9897 if (att_end - att_beg == cookie_name_l &&
9898 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
9899 /* let's return this value and indicate where to go on from */
9900 *value = val_beg;
9901 *value_l = val_end - val_beg;
9902 return next + 1;
9903 }
9904
9905 /* Set-Cookie headers only have the name in the first attr=value part */
9906 if (!list)
9907 break;
9908 }
9909
9910 return NULL;
9911}
9912
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]9913/* Fetch a captured HTTP request header. The index is the position of
9914 * the "capture" option in the configuration file
9915 */
9916static int
9917smp_fetch_capture_header_req(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9918 const struct arg *args, struct sample *smp, const char *kw)
9919{
9920 struct proxy *fe = l4->fe;
9921 struct http_txn *txn = l7;
9922 int idx;
9923
9924 if (!args || args->type != ARGT_UINT)
9925 return 0;
9926
9927 idx = args->data.uint;
9928
9929 if (idx > (fe->nb_req_cap - 1) || txn->req.cap == NULL || txn->req.cap[idx] == NULL)
9930 return 0;
9931
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9932 smp->type = SMP_T_STR;
9933 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]9934 smp->data.str.str = txn->req.cap[idx];
9935 smp->data.str.len = strlen(txn->req.cap[idx]);
9936
9937 return 1;
9938}
9939
9940/* Fetch a captured HTTP response header. The index is the position of
9941 * the "capture" option in the configuration file
9942 */
9943static int
9944smp_fetch_capture_header_res(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9945 const struct arg *args, struct sample *smp, const char *kw)
9946{
9947 struct proxy *fe = l4->fe;
9948 struct http_txn *txn = l7;
9949 int idx;
9950
9951 if (!args || args->type != ARGT_UINT)
9952 return 0;
9953
9954 idx = args->data.uint;
9955
9956 if (idx > (fe->nb_rsp_cap - 1) || txn->rsp.cap == NULL || txn->rsp.cap[idx] == NULL)
9957 return 0;
9958
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9959 smp->type = SMP_T_STR;
9960 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]9961 smp->data.str.str = txn->rsp.cap[idx];
9962 smp->data.str.len = strlen(txn->rsp.cap[idx]);
9963
9964 return 1;
9965}
9966
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]9967/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
9968static int
9969smp_fetch_capture_req_method(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9970 const struct arg *args, struct sample *smp, const char *kw)
9971{
9972 struct chunk *temp;
9973 struct http_txn *txn = l7;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]9974 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]9975
9976 if (!txn->uri)
9977 return 0;
9978
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]9979 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]9980
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]9981 while (*ptr != ' ' && *ptr != '\0') /* find first space */
9982 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]9983
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]9984 temp = get_trash_chunk();
9985 temp->str = txn->uri;
9986 temp->len = ptr - txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]9987 smp->data.str = *temp;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9988 smp->type = SMP_T_STR;
9989 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]9990
9991 return 1;
9992
9993}
9994
9995/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
9996static int
9997smp_fetch_capture_req_uri(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9998 const struct arg *args, struct sample *smp, const char *kw)
9999{
10000 struct chunk *temp;
10001 struct http_txn *txn = l7;
10002 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10003
10004 if (!txn->uri)
10005 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10006
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10007 ptr = txn->uri;
10008
10009 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10010 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10011
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10012 if (!*ptr)
10013 return 0;
10014
10015 ptr++; /* skip the space */
10016
10017 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10018 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10019 if (!ptr)
10020 return 0;
10021 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
10022 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10023
10024 smp->data.str = *temp;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10025 smp->data.str.len = ptr - temp->str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10026 smp->type = SMP_T_STR;
10027 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10028
10029 return 1;
10030}
10031
10032
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10033/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10034 * 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]10035 * 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]10036 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10037 * 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]10038 * Accepts exactly 1 argument of type string. If the input options indicate
10039 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]10040 * The returned sample is of type CSTR.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10041 */
10042static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10043smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10044 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10045{
10046 struct http_txn *txn = l7;
10047 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10048 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10049 const struct http_msg *msg;
10050 const char *hdr_name;
10051 int hdr_name_len;
10052 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10053 int occ = 0;
10054 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10055
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10056 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10057 return 0;
10058
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10059 if (!ctx) {
10060 /* first call */
10061 ctx = &static_hdr_ctx;
10062 ctx->idx = 0;
10063 smp->ctx.a[2] = ctx;
10064 }
10065
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10066 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10067
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10068 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10069 msg = &txn->req;
10070 hdr_name = "Cookie";
10071 hdr_name_len = 6;
10072 } else {
10073 msg = &txn->rsp;
10074 hdr_name = "Set-Cookie";
10075 hdr_name_len = 10;
10076 }
10077
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10078 if (!occ && !(opt & SMP_OPT_ITERATE))
10079 /* no explicit occurrence and single fetch => last cookie by default */
10080 occ = -1;
10081
10082 /* OK so basically here, either we want only one value and it's the
10083 * last one, or we want to iterate over all of them and we fetch the
10084 * next one.
10085 */
10086
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10087 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10088 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10089 /* search for the header from the beginning, we must first initialize
10090 * the search parameters.
10091 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10092 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10093 ctx->idx = 0;
10094 }
10095
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10096 smp->flags |= SMP_F_VOL_HDR;
10097
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10098 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10099 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
10100 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10101 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
10102 goto out;
10103
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10104 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10105 continue;
10106
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10107 smp->ctx.a[0] = ctx->line + ctx->val;
10108 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10109 }
10110
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10111 smp->type = SMP_T_STR;
10112 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10113 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]10114 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10115 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10116 &smp->data.str.str,
10117 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10118 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10119 found = 1;
10120 if (occ >= 0) {
10121 /* one value was returned into smp->data.str.{str,len} */
10122 smp->flags |= SMP_F_NOT_LAST;
10123 return 1;
10124 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10125 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10126 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10127 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10128 /* all cookie headers and values were scanned. If we're looking for the
10129 * last occurrence, we may return it now.
10130 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10131 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10132 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10133 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10134}
10135
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10136/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10137 * 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]10138 * multiple cookies may be parsed on the same line. The returned sample is of
10139 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10140 */
10141static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10142smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10143 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10144{
10145 struct http_txn *txn = l7;
10146 struct hdr_idx *idx = &txn->hdr_idx;
10147 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10148 const struct http_msg *msg;
10149 const char *hdr_name;
10150 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10151 int cnt;
10152 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10153 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10154
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10155 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10156 return 0;
10157
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10158 CHECK_HTTP_MESSAGE_FIRST();
10159
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10160 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10161 msg = &txn->req;
10162 hdr_name = "Cookie";
10163 hdr_name_len = 6;
10164 } else {
10165 msg = &txn->rsp;
10166 hdr_name = "Set-Cookie";
10167 hdr_name_len = 10;
10168 }
10169
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10170 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]10171 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10172 ctx.idx = 0;
10173 cnt = 0;
10174
10175 while (1) {
10176 /* Note: val_beg == NULL every time we need to fetch a new header */
10177 if (!val_beg) {
10178 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
10179 break;
10180
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10181 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10182 continue;
10183
10184 val_beg = ctx.line + ctx.val;
10185 val_end = val_beg + ctx.vlen;
10186 }
10187
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10188 smp->type = SMP_T_STR;
10189 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10190 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10191 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10192 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10193 &smp->data.str.str,
10194 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10195 cnt++;
10196 }
10197 }
10198
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]10199 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10200 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10201 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10202 return 1;
10203}
10204
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10205/* Fetch an cookie's integer value. The integer value is returned. It
10206 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
10207 */
10208static int
10209smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10210 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10211{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10212 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10213
10214 if (ret > 0) {
10215 smp->type = SMP_T_UINT;
10216 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10217 }
10218
10219 return ret;
10220}
10221
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10222/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10223/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10224/************************************************************************/
10225
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10226/*
10227 * Given a path string and its length, find the position of beginning of the
10228 * query string. Returns NULL if no query string is found in the path.
10229 *
10230 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
10231 *
10232 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
10233 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10234static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10235{
10236 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]10237
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10238 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10239 return p ? p + 1 : NULL;
10240}
10241
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10242static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10243{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10244 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10245}
10246
10247/*
10248 * Given a url parameter, find the starting position of the first occurence,
10249 * or NULL if the parameter is not found.
10250 *
10251 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
10252 * the function will return query_string+8.
10253 */
10254static char*
10255find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10256 char* url_param_name, size_t url_param_name_l,
10257 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10258{
10259 char *pos, *last;
10260
10261 pos = query_string;
10262 last = query_string + query_string_l - url_param_name_l - 1;
10263
10264 while (pos <= last) {
10265 if (pos[url_param_name_l] == '=') {
10266 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
10267 return pos;
10268 pos += url_param_name_l + 1;
10269 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10270 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10271 pos++;
10272 pos++;
10273 }
10274 return NULL;
10275}
10276
10277/*
10278 * Given a url parameter name, returns its value and size into *value and
10279 * *value_l respectively, and returns non-zero. If the parameter is not found,
10280 * zero is returned and value/value_l are not touched.
10281 */
10282static int
10283find_url_param_value(char* path, size_t path_l,
10284 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10285 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10286{
10287 char *query_string, *qs_end;
10288 char *arg_start;
10289 char *value_start, *value_end;
10290
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10291 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10292 if (!query_string)
10293 return 0;
10294
10295 qs_end = path + path_l;
10296 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10297 url_param_name, url_param_name_l,
10298 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10299 if (!arg_start)
10300 return 0;
10301
10302 value_start = arg_start + url_param_name_l + 1;
10303 value_end = value_start;
10304
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10305 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10306 value_end++;
10307
10308 *value = value_start;
10309 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]10310 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10311}
10312
10313static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10314smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10315 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10316{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10317 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10318 struct http_txn *txn = l7;
10319 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10320
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10321 if (!args || args[0].type != ARGT_STR ||
10322 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10323 return 0;
10324
10325 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10326
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10327 if (args[1].type)
10328 delim = *args[1].data.str.str;
10329
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10330 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]10331 args->data.str.str, args->data.str.len,
10332 &smp->data.str.str, &smp->data.str.len,
10333 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10334 return 0;
10335
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10336 smp->type = SMP_T_STR;
10337 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10338 return 1;
10339}
10340
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]10341/* Return the signed integer value for the specified url parameter (see url_param
10342 * above).
10343 */
10344static int
10345smp_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]10346 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]10347{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10348 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]10349
10350 if (ret > 0) {
10351 smp->type = SMP_T_UINT;
10352 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10353 }
10354
10355 return ret;
10356}
10357
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10358/* This produces a 32-bit hash of the concatenation of the first occurrence of
10359 * the Host header followed by the path component if it begins with a slash ('/').
10360 * This means that '*' will not be added, resulting in exactly the first Host
10361 * entry. If no Host header is found, then the path is used. The resulting value
10362 * is hashed using the url hash followed by a full avalanche hash and provides a
10363 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
10364 * high-traffic sites without having to store whole paths.
10365 * this differs from the base32 functions in that it includes the url parameters
10366 * as well as the path
10367 */
10368static int
10369smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]10370 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10371{
10372 struct http_txn *txn = l7;
10373 struct hdr_ctx ctx;
10374 unsigned int hash = 0;
10375 char *ptr, *beg, *end;
10376 int len;
10377
10378 CHECK_HTTP_MESSAGE_FIRST();
10379
10380 ctx.idx = 0;
10381 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
10382 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10383 ptr = ctx.line + ctx.val;
10384 len = ctx.vlen;
10385 while (len--)
10386 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10387 }
10388
10389 /* now retrieve the path */
10390 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
10391 beg = http_get_path(txn);
10392 if (!beg)
10393 beg = end;
10394
10395 for (ptr = beg; ptr < end ; ptr++);
10396
10397 if (beg < ptr && *beg == '/') {
10398 while (beg < ptr)
10399 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10400 }
10401 hash = full_hash(hash);
10402
10403 smp->type = SMP_T_UINT;
10404 smp->data.uint = hash;
10405 smp->flags = SMP_F_VOL_1ST;
10406 return 1;
10407}
10408
10409/* This concatenates the source address with the 32-bit hash of the Host and
10410 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
10411 * per-url counters. The result is a binary block from 8 to 20 bytes depending
10412 * on the source address length. The URL hash is stored before the address so
10413 * that in environments where IPv6 is insignificant, truncating the output to
10414 * 8 bytes would still work.
10415 */
10416static int
10417smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]10418 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10419{
10420 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10421 struct connection *cli_conn = objt_conn(l4->si[0].end);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10422
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]10423 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10424 return 0;
10425
10426 temp = get_trash_chunk();
10427 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
10428 temp->len += sizeof(smp->data.uint);
10429
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10430 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10431 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10432 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]10433 temp->len += 4;
10434 break;
10435 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10436 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]10437 temp->len += 16;
10438 break;
10439 default:
10440 return 0;
10441 }
10442
10443 smp->data.str = *temp;
10444 smp->type = SMP_T_BIN;
10445 return 1;
10446}
10447
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10448/* This function is used to validate the arguments passed to any "hdr" fetch
10449 * keyword. These keywords support an optional positive or negative occurrence
10450 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
10451 * is assumed that the types are already the correct ones. Returns 0 on error,
10452 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
10453 * error message in case of error, that the caller is responsible for freeing.
10454 * The initial location must either be freeable or NULL.
10455 */
10456static int val_hdr(struct arg *arg, char **err_msg)
10457{
10458 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]10459 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10460 return 0;
10461 }
10462 return 1;
10463}
10464
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10465/* takes an UINT value on input supposed to represent the time since EPOCH,
10466 * adds an optional offset found in args[0] and emits a string representing
10467 * the date in RFC-1123/5322 format.
10468 */
10469static int sample_conv_http_date(const struct arg *args, struct sample *smp)
10470{
10471 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
10472 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
10473 struct chunk *temp;
10474 struct tm *tm;
10475 time_t curr_date = smp->data.uint;
10476
10477 /* add offset */
10478 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
10479 curr_date += args[0].data.sint;
10480
10481 tm = gmtime(&curr_date);
10482
10483 temp = get_trash_chunk();
10484 temp->len = snprintf(temp->str, temp->size - temp->len,
10485 "%s, %02d %s %04d %02d:%02d:%02d GMT",
10486 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
10487 tm->tm_hour, tm->tm_min, tm->tm_sec);
10488
10489 smp->data.str = *temp;
10490 smp->type = SMP_T_STR;
10491 return 1;
10492}
10493
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]10494/* Match language range with language tag. RFC2616 14.4:
10495 *
10496 * A language-range matches a language-tag if it exactly equals
10497 * the tag, or if it exactly equals a prefix of the tag such
10498 * that the first tag character following the prefix is "-".
10499 *
10500 * Return 1 if the strings match, else return 0.
10501 */
10502static inline int language_range_match(const char *range, int range_len,
10503 const char *tag, int tag_len)
10504{
10505 const char *end = range + range_len;
10506 const char *tend = tag + tag_len;
10507 while (range < end) {
10508 if (*range == '-' && tag == tend)
10509 return 1;
10510 if (*range != *tag || tag == tend)
10511 return 0;
10512 range++;
10513 tag++;
10514 }
10515 /* Return true only if the last char of the tag is matched. */
10516 return tag == tend;
10517}
10518
10519/* Arguments: The list of expected value, the number of parts returned and the separator */
10520static int sample_conv_q_prefered(const struct arg *args, struct sample *smp)
10521{
10522 const char *al = smp->data.str.str;
10523 const char *end = al + smp->data.str.len;
10524 const char *token;
10525 int toklen;
10526 int qvalue;
10527 const char *str;
10528 const char *w;
10529 int best_q = 0;
10530
10531 /* Set the constant to the sample, because the output of the
10532 * function will be peek in the constant configuration string.
10533 */
10534 smp->flags |= SMP_F_CONST;
10535 smp->data.str.size = 0;
10536 smp->data.str.str = "";
10537 smp->data.str.len = 0;
10538
10539 /* Parse the accept language */
10540 while (1) {
10541
10542 /* Jump spaces, quit if the end is detected. */
10543 while (al < end && isspace(*al))
10544 al++;
10545 if (al >= end)
10546 break;
10547
10548 /* Start of the fisrt word. */
10549 token = al;
10550
10551 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
10552 while (al < end && *al != ';' && *al != ',' && !isspace(*al))
10553 al++;
10554 if (al == token)
10555 goto expect_comma;
10556
10557 /* Length of the token. */
10558 toklen = al - token;
10559 qvalue = 1000;
10560
10561 /* Check if the token exists in the list. If the token not exists,
10562 * jump to the next token.
10563 */
10564 str = args[0].data.str.str;
10565 w = str;
10566 while (1) {
10567 if (*str == ';' || *str == '\0') {
10568 if (language_range_match(token, toklen, w, str-w))
10569 goto look_for_q;
10570 if (*str == '\0')
10571 goto expect_comma;
10572 w = str + 1;
10573 }
10574 str++;
10575 }
10576 goto expect_comma;
10577
10578look_for_q:
10579
10580 /* Jump spaces, quit if the end is detected. */
10581 while (al < end && isspace(*al))
10582 al++;
10583 if (al >= end)
10584 goto process_value;
10585
10586 /* If ',' is found, process the result */
10587 if (*al == ',')
10588 goto process_value;
10589
10590 /* If the character is different from ';', look
10591 * for the end of the header part in best effort.
10592 */
10593 if (*al != ';')
10594 goto expect_comma;
10595
10596 /* Assumes that the char is ';', now expect "q=". */
10597 al++;
10598
10599 /* Jump spaces, process value if the end is detected. */
10600 while (al < end && isspace(*al))
10601 al++;
10602 if (al >= end)
10603 goto process_value;
10604
10605 /* Expect 'q'. If no 'q', continue in best effort */
10606 if (*al != 'q')
10607 goto process_value;
10608 al++;
10609
10610 /* Jump spaces, process value if the end is detected. */
10611 while (al < end && isspace(*al))
10612 al++;
10613 if (al >= end)
10614 goto process_value;
10615
10616 /* Expect '='. If no '=', continue in best effort */
10617 if (*al != '=')
10618 goto process_value;
10619 al++;
10620
10621 /* Jump spaces, process value if the end is detected. */
10622 while (al < end && isspace(*al))
10623 al++;
10624 if (al >= end)
10625 goto process_value;
10626
10627 /* Parse the q value. */
10628 qvalue = parse_qvalue(al, &al);
10629
10630process_value:
10631
10632 /* If the new q value is the best q value, then store the associated
10633 * language in the response. If qvalue is the biggest value (1000),
10634 * break the process.
10635 */
10636 if (qvalue > best_q) {
10637 smp->data.str.str = (char *)w;
10638 smp->data.str.len = str - w;
10639 if (qvalue >= 1000)
10640 break;
10641 best_q = qvalue;
10642 }
10643
10644expect_comma:
10645
10646 /* Expect comma or end. If the end is detected, quit the loop. */
10647 while (al < end && *al != ',')
10648 al++;
10649 if (al >= end)
10650 break;
10651
10652 /* Comma is found, jump it and restart the analyzer. */
10653 al++;
10654 }
10655
10656 /* Set default value if required. */
10657 if (smp->data.str.len == 0 && args[1].type == ARGT_STR) {
10658 smp->data.str.str = args[1].data.str.str;
10659 smp->data.str.len = args[1].data.str.len;
10660 }
10661
10662 /* Return true only if a matching language was found. */
10663 return smp->data.str.len != 0;
10664}
10665
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10666/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10667/* All supported ACL keywords must be declared here. */
10668/************************************************************************/
10669
10670/* Note: must not be declared <const> as its list will be overwritten.
10671 * Please take care of keeping this list alphabetically sorted.
10672 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]10673static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10674 { "base", "base", PAT_MATCH_STR },
10675 { "base_beg", "base", PAT_MATCH_BEG },
10676 { "base_dir", "base", PAT_MATCH_DIR },
10677 { "base_dom", "base", PAT_MATCH_DOM },
10678 { "base_end", "base", PAT_MATCH_END },
10679 { "base_len", "base", PAT_MATCH_LEN },
10680 { "base_reg", "base", PAT_MATCH_REG },
10681 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10682
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10683 { "cook", "req.cook", PAT_MATCH_STR },
10684 { "cook_beg", "req.cook", PAT_MATCH_BEG },
10685 { "cook_dir", "req.cook", PAT_MATCH_DIR },
10686 { "cook_dom", "req.cook", PAT_MATCH_DOM },
10687 { "cook_end", "req.cook", PAT_MATCH_END },
10688 { "cook_len", "req.cook", PAT_MATCH_LEN },
10689 { "cook_reg", "req.cook", PAT_MATCH_REG },
10690 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10691
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10692 { "hdr", "req.hdr", PAT_MATCH_STR },
10693 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
10694 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
10695 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
10696 { "hdr_end", "req.hdr", PAT_MATCH_END },
10697 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
10698 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
10699 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10700
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10701 /* these two declarations uses strings with list storage (in place
10702 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
10703 * and delete functions are relative to the list management. The parse
10704 * and match method are related to the corresponding fetch methods. This
10705 * is very particular ACL declaration mode.
10706 */
10707 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
10708 { "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]10709
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10710 { "path", "path", PAT_MATCH_STR },
10711 { "path_beg", "path", PAT_MATCH_BEG },
10712 { "path_dir", "path", PAT_MATCH_DIR },
10713 { "path_dom", "path", PAT_MATCH_DOM },
10714 { "path_end", "path", PAT_MATCH_END },
10715 { "path_len", "path", PAT_MATCH_LEN },
10716 { "path_reg", "path", PAT_MATCH_REG },
10717 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10718
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10719 { "req_ver", "req.ver", PAT_MATCH_STR },
10720 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10721
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10722 { "scook", "res.cook", PAT_MATCH_STR },
10723 { "scook_beg", "res.cook", PAT_MATCH_BEG },
10724 { "scook_dir", "res.cook", PAT_MATCH_DIR },
10725 { "scook_dom", "res.cook", PAT_MATCH_DOM },
10726 { "scook_end", "res.cook", PAT_MATCH_END },
10727 { "scook_len", "res.cook", PAT_MATCH_LEN },
10728 { "scook_reg", "res.cook", PAT_MATCH_REG },
10729 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10730
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10731 { "shdr", "res.hdr", PAT_MATCH_STR },
10732 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
10733 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
10734 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
10735 { "shdr_end", "res.hdr", PAT_MATCH_END },
10736 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
10737 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
10738 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10739
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10740 { "url", "url", PAT_MATCH_STR },
10741 { "url_beg", "url", PAT_MATCH_BEG },
10742 { "url_dir", "url", PAT_MATCH_DIR },
10743 { "url_dom", "url", PAT_MATCH_DOM },
10744 { "url_end", "url", PAT_MATCH_END },
10745 { "url_len", "url", PAT_MATCH_LEN },
10746 { "url_reg", "url", PAT_MATCH_REG },
10747 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10748
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10749 { "urlp", "urlp", PAT_MATCH_STR },
10750 { "urlp_beg", "urlp", PAT_MATCH_BEG },
10751 { "urlp_dir", "urlp", PAT_MATCH_DIR },
10752 { "urlp_dom", "urlp", PAT_MATCH_DOM },
10753 { "urlp_end", "urlp", PAT_MATCH_END },
10754 { "urlp_len", "urlp", PAT_MATCH_LEN },
10755 { "urlp_reg", "urlp", PAT_MATCH_REG },
10756 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10757
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]10758 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10759}};
10760
10761/************************************************************************/
10762/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10763/************************************************************************/
10764/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]10765static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10766 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10767 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10768 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
10769
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10770 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
10771 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10772
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10773 /* capture are allocated and are permanent in the session */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10774 { "capture.req.hdr", smp_fetch_capture_header_req, ARG1(1, UINT), NULL, SMP_T_STR, SMP_USE_HRQHP },
10775 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1, UINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10776
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10777 /* cookie is valid in both directions (eg: for "stick ...") but cook*
10778 * are only here to match the ACL's name, are request-only and are used
10779 * for ACL compatibility only.
10780 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10781 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
10782 { "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]10783 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10784 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10785
10786 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
10787 * only here to match the ACL's name, are request-only and are used for
10788 * ACL compatibility only.
10789 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10790 { "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]10791 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10792 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10793 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10794
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]10795 { "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]10796 { "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]10797 { "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]10798 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10799 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10800
10801 /* HTTP protocol on the request path */
10802 { "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]10803 { "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]10804
10805 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10806 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
10807 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10808
10809 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10810 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
10811 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10812
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10813 /* 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]10814 { "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]10815 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10816 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10817
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10818 { "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]10819 { "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]10820 { "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]10821 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10822 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10823 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10824
10825 /* 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]10826 { "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]10827 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10828 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10829
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10830 { "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]10831 { "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]10832 { "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]10833 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10834 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10835 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10836
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10837 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10838 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10839 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10840 { "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]10841 { "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]10842
10843 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10844 { "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]10845 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10846 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10847 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10848
10849 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10850 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10851 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10852 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10853 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
10854 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10855 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
10856 { "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]10857 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10858 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10859}};
10860
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10861
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10862/* Note: must not be declared <const> as its list will be overwritten */
10863static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]10864 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR},
10865 { "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]10866 { NULL, NULL, 0, 0, 0 },
10867}};
10868
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10869__attribute__((constructor))
10870static void __http_protocol_init(void)
10871{
10872 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10873 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10874 sample_register_convs(&sample_conv_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10875}
10876
10877
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]10878/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]10879 * Local variables:
10880 * c-indent-level: 8
10881 * c-basic-offset: 8
10882 * End:
10883 */