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git01.mediatek.com / haproxy / 1234f4a21028051d0249d3b34fd8b3360a2f2318 / . / src / proto_http.c
blob: 328f28b51bc8216f2c0a3ff0424c08ea1648b8df [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 Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]951 b_rew(s->req->buf, rewind = http_hdr_rewind(&txn->req));
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 Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1734 /* Assumes msg->sol points to the first of either CR or LF.
1735 * Sets ->sov and ->next to the total header length, ->eoh to
1736 * the last CRLF, and ->eol to the last CRLF length (1 or 2).
1737 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1738 EXPECT_LF_HERE(ptr, http_msg_invalid);
1739 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1740 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1741 msg->eoh = msg->sol;
1742 msg->sol = 0;
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1743 msg->eol = msg->sov - msg->eoh;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1744 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1745 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1746
1747 case HTTP_MSG_ERROR:
1748 /* this may only happen if we call http_msg_analyser() twice with an error */
1749 break;
1750
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1751 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1752#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1753 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1754 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1755#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1756 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1757 }
1758 http_msg_ood:
1759 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1760 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1761 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1762 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1763
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1764 http_msg_invalid:
1765 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1766 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1767 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1768 return;
1769}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1770
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1771/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1772 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1773 * nothing is done and 1 is returned.
1774 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1775static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1776{
1777 int delta;
1778 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1779 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1780
1781 if (msg->sl.rq.v_l != 0)
1782 return 1;
1783
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1784 /* RFC 1945 allows only GET for HTTP/0.9 requests */
1785 if (txn->meth != HTTP_METH_GET)
1786 return 0;
1787
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1788 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1789 delta = 0;
1790
1791 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1792 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
1793 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1794 }
1795 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1796 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]1797 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1798 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1799 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1800 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1801 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1802 NULL, NULL);
1803 if (unlikely(!cur_end))
1804 return 0;
1805
1806 /* we have a full HTTP/1.0 request now and we know that
1807 * we have either a CR or an LF at <ptr>.
1808 */
1809 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1810 return 1;
1811}
1812
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1813/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1814 * and "keep-alive" values. If we already know that some headers may safely
1815 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1816 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1817 * - 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]1818 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1819 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1820 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1821 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1822 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1823 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1824void 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]1825{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1826 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1827 const char *hdr_val = "Connection";
1828 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1829
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1830 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1831 return;
1832
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1833 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1834 hdr_val = "Proxy-Connection";
1835 hdr_len = 16;
1836 }
1837
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1838 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1839 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1840 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]1841 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1842 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1843 if (to_del & 2)
1844 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1845 else
1846 txn->flags |= TX_CON_KAL_SET;
1847 }
1848 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1849 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1850 if (to_del & 1)
1851 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1852 else
1853 txn->flags |= TX_CON_CLO_SET;
1854 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1855 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1856 txn->flags |= TX_HDR_CONN_UPG;
1857 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1858 }
1859
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1860 txn->flags |= TX_HDR_CONN_PRS;
1861 return;
1862}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1863
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1864/* Apply desired changes on the Connection: header. Values may be removed and/or
1865 * added depending on the <wanted> flags, which are exclusively composed of
1866 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1867 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1868 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1869void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1870{
1871 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1872 const char *hdr_val = "Connection";
1873 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1874
1875 ctx.idx = 0;
1876
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1877
1878 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1879 hdr_val = "Proxy-Connection";
1880 hdr_len = 16;
1881 }
1882
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1883 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1884 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]1885 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1886 if (wanted & TX_CON_KAL_SET)
1887 txn->flags |= TX_CON_KAL_SET;
1888 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1889 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1890 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1891 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1892 if (wanted & TX_CON_CLO_SET)
1893 txn->flags |= TX_CON_CLO_SET;
1894 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1895 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1896 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1897 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1898
1899 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1900 return;
1901
1902 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1903 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1904 hdr_val = "Connection: close";
1905 hdr_len = 17;
1906 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1907 hdr_val = "Proxy-Connection: close";
1908 hdr_len = 23;
1909 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1910 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1911 }
1912
1913 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1914 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1915 hdr_val = "Connection: keep-alive";
1916 hdr_len = 22;
1917 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1918 hdr_val = "Proxy-Connection: keep-alive";
1919 hdr_len = 28;
1920 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1921 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1922 }
1923 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1924}
1925
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]1926/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to
1927 * the first byte of data after the chunk size, so that we know we can forward
1928 * exactly msg->next bytes. msg->sol contains the exact number of bytes forming
1929 * the chunk size. That way it is always possible to differentiate between the
1930 * start of the body and the start of the data.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1931 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1932 * 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]1933 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1934static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1935{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1936 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1937 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1938 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1939 const char *end = buf->data + buf->size;
1940 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1941 unsigned int chunk = 0;
1942
1943 /* The chunk size is in the following form, though we are only
1944 * interested in the size and CRLF :
1945 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1946 */
1947 while (1) {
1948 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1949 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1950 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1951 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1952 if (c < 0) /* not a hex digit anymore */
1953 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1954 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1955 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1956 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1957 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1958 chunk = (chunk << 4) + c;
1959 }
1960
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1961 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1962 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1963 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1964
1965 while (http_is_spht[(unsigned char)*ptr]) {
1966 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1967 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1968 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1969 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1970 }
1971
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1972 /* Up to there, we know that at least one byte is present at *ptr. Check
1973 * for the end of chunk size.
1974 */
1975 while (1) {
1976 if (likely(HTTP_IS_CRLF(*ptr))) {
1977 /* we now have a CR or an LF at ptr */
1978 if (likely(*ptr == '\r')) {
1979 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1980 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1981 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1982 return 0;
1983 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1984
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1985 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1986 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1987 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1988 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1989 /* done */
1990 break;
1991 }
1992 else if (*ptr == ';') {
1993 /* chunk extension, ends at next CRLF */
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 Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1997 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1998
1999 while (!HTTP_IS_CRLF(*ptr)) {
2000 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2001 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2002 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2003 return 0;
2004 }
2005 /* we have a CRLF now, loop above */
2006 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2007 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2008 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2009 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2010 }
2011
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2012 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2013 * which may or may not be present. We save that into ->next,
2014 * and the number of bytes parsed into msg->sol.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2015 */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2016 msg->sol = ptr - ptr_old;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2017 if (unlikely(ptr < ptr_old))
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2018 msg->sol += buf->size;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2019 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2020 msg->chunk_len = chunk;
2021 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2022 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2023 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2024 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2025 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2026 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2027}
2028
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2029/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2030 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2031 * the trailers is found, it is automatically scheduled to be forwarded,
2032 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
2033 * If not enough data are available, the function does not change anything
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2034 * except maybe msg->next if it could parse some lines, and returns zero.
2035 * If a parse error is encountered, the function returns < 0 and does not
2036 * change anything except maybe msg->next. Note that the message must
2037 * already be in HTTP_MSG_TRAILERS state before calling this function,
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2038 * which implies that all non-trailers data have already been scheduled for
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2039 * forwarding, and that msg->next exactly matches the length of trailers
2040 * already parsed and not forwarded. It is also important to note that this
2041 * function is designed to be able to parse wrapped headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2042 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2043static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2044{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2045 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2046
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2047 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2048 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2049 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2050 const char *ptr = b_ptr(buf, msg->next);
2051 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2052 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2053
2054 /* scan current line and stop at LF or CRLF */
2055 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2056 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2057 return 0;
2058
2059 if (*ptr == '\n') {
2060 if (!p1)
2061 p1 = ptr;
2062 p2 = ptr;
2063 break;
2064 }
2065
2066 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2067 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2068 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2069 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2070 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2071 p1 = ptr;
2072 }
2073
2074 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2075 if (ptr >= buf->data + buf->size)
2076 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2077 }
2078
2079 /* after LF; point to beginning of next line */
2080 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2081 if (p2 >= buf->data + buf->size)
2082 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2083
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2084 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2085 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2086 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +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 Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2102/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF
2103 * or a possible LF alone at the end of a chunk. It automatically adjusts
2104 * msg->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 Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2123 ptr = b_ptr(buf, msg->next);
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 Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2131 if (msg->next + 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 Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2142 /* Advance ->next to allow the CRLF to be forwarded */
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2143 msg->next += bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2144 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
2145 return 1;
2146}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2147
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2148/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2149 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2150 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2151 * Unparsable qvalues return 1000 as "q=1.000".
2152 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2153int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2154{
2155 int q = 1000;
2156
2157 if (!isdigit(*qvalue))
2158 goto out;
2159 q = (*qvalue++ - '0') * 1000;
2160
2161 if (*qvalue++ != '.')
2162 goto out;
2163
2164 if (!isdigit(*qvalue))
2165 goto out;
2166 q += (*qvalue++ - '0') * 100;
2167
2168 if (!isdigit(*qvalue))
2169 goto out;
2170 q += (*qvalue++ - '0') * 10;
2171
2172 if (!isdigit(*qvalue))
2173 goto out;
2174 q += (*qvalue++ - '0') * 1;
2175 out:
2176 if (q > 1000)
2177 q = 1000;
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2178 if (*end)
2179 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2180 return q;
2181}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2182
2183/*
2184 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2185 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2186int select_compression_request_header(struct session *s, struct buffer *req)
2187{
2188 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2189 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2190 struct hdr_ctx ctx;
2191 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2192 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2193
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2194 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
2195 * 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]2196 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
2197 */
2198 ctx.idx = 0;
2199 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
2200 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2201 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
2202 (ctx.vlen < 31 ||
2203 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
2204 ctx.line[ctx.val + 30] < '6' ||
2205 (ctx.line[ctx.val + 30] == '6' &&
2206 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
2207 s->comp_algo = NULL;
2208 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2209 }
2210
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2211 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2212 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]2213 int best_q = 0;
2214
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2215 ctx.idx = 0;
2216 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2217 const char *qval;
2218 int q;
2219 int toklen;
2220
2221 /* try to isolate the token from the optional q-value */
2222 toklen = 0;
2223 while (toklen < ctx.vlen && http_is_token[(unsigned char)*(ctx.line + ctx.val + toklen)])
2224 toklen++;
2225
2226 qval = ctx.line + ctx.val + toklen;
2227 while (1) {
2228 while (qval < ctx.line + ctx.val + ctx.vlen && http_is_lws[(unsigned char)*qval])
2229 qval++;
2230
2231 if (qval >= ctx.line + ctx.val + ctx.vlen || *qval != ';') {
2232 qval = NULL;
2233 break;
2234 }
2235 qval++;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2236
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2237 while (qval < ctx.line + ctx.val + ctx.vlen && http_is_lws[(unsigned char)*qval])
2238 qval++;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2239
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2240 if (qval >= ctx.line + ctx.val + ctx.vlen) {
2241 qval = NULL;
2242 break;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2243 }
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2244 if (strncmp(qval, "q=", MIN(ctx.line + ctx.val + ctx.vlen - qval, 2)) == 0)
2245 break;
2246
2247 while (qval < ctx.line + ctx.val + ctx.vlen && *qval != ';')
2248 qval++;
2249 }
2250
2251 /* 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]2252 q = qval ? parse_qvalue(qval + 2, NULL) : 1000;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2253
2254 if (q <= best_q)
2255 continue;
2256
2257 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
2258 if (*(ctx.line + ctx.val) == '*' ||
2259 word_match(ctx.line + ctx.val, toklen, comp_algo->name, comp_algo->name_len)) {
2260 s->comp_algo = comp_algo;
2261 best_q = q;
2262 break;
2263 }
2264 }
2265 }
2266 }
2267
2268 /* remove all occurrences of the header when "compression offload" is set */
2269 if (s->comp_algo) {
2270 if ((s->be->comp && s->be->comp->offload) || (s->fe->comp && s->fe->comp->offload)) {
2271 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2272 ctx.idx = 0;
2273 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2274 http_remove_header2(msg, &txn->hdr_idx, &ctx);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2275 }
2276 }
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2277 return 1;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2278 }
2279
2280 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2281 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2282 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2283 if (comp_algo->add_data == identity_add_data) {
2284 s->comp_algo = comp_algo;
2285 return 1;
2286 }
2287 }
2288 }
2289
2290 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2291 return 0;
2292}
2293
2294/*
2295 * Selects a comression algorithm depending of the server response.
2296 */
2297int select_compression_response_header(struct session *s, struct buffer *res)
2298{
2299 struct http_txn *txn = &s->txn;
2300 struct http_msg *msg = &txn->rsp;
2301 struct hdr_ctx ctx;
2302 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2303
2304 /* no common compression algorithm was found in request header */
2305 if (s->comp_algo == NULL)
2306 goto fail;
2307
2308 /* HTTP < 1.1 should not be compressed */
Willy Tarreau72575502013-12-24 14:41:35 +0100[diff] [blame]2309 if (!(msg->flags & HTTP_MSGF_VER_11) || !(txn->req.flags & HTTP_MSGF_VER_11))
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2310 goto fail;
2311
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2312 /* 200 only */
2313 if (txn->status != 200)
2314 goto fail;
2315
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2316 /* Content-Length is null */
2317 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2318 goto fail;
2319
Willy Tarreau667c2a32013-04-09 08:13:58 +0200[diff] [blame]2320 /* TEMPORARY WORKAROUND: do not compress if response is chunked !!!!!! */
2321 if (msg->flags & HTTP_MSGF_TE_CHNK)
2322 goto fail;
2323
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2324 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2325 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2326 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2327 goto fail;
2328
Willy Tarreau56e9ffa2013-01-05 16:20:35 +0100[diff] [blame]2329 /* no compression when Cache-Control: no-transform is present in the message */
2330 ctx.idx = 0;
2331 while (http_find_header2("Cache-Control", 13, res->p, &txn->hdr_idx, &ctx)) {
2332 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12))
2333 goto fail;
2334 }
2335
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2336 comp_type = NULL;
2337
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2338 /* we don't want to compress multipart content-types, nor content-types that are
2339 * not listed in the "compression type" directive if any. If no content-type was
2340 * found but configuration requires one, we don't compress either. Backend has
2341 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2342 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2343 ctx.idx = 0;
2344 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2345 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2346 goto fail;
2347
2348 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
2349 (s->fe->comp && (comp_type = s->fe->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2350 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2351 if (ctx.vlen >= comp_type->name_len &&
2352 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2353 /* this Content-Type should be compressed */
2354 break;
2355 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2356 /* this Content-Type should not be compressed */
2357 if (comp_type == NULL)
2358 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2359 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2360 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2361 else { /* no content-type header */
2362 if ((s->be->comp && s->be->comp->types) || (s->fe->comp && s->fe->comp->types))
2363 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2364 }
2365
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2366 /* limit compression rate */
2367 if (global.comp_rate_lim > 0)
2368 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2369 goto fail;
2370
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2371 /* limit cpu usage */
2372 if (idle_pct < compress_min_idle)
2373 goto fail;
2374
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2375 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2376 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2377 goto fail;
2378
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2379 s->flags |= SN_COMP_READY;
2380
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2381 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2382 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2383 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2384 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2385
2386 /* add Transfer-Encoding header */
2387 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2388 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2389
2390 /*
2391 * Add Content-Encoding header when it's not identity encoding.
2392 * RFC 2616 : Identity encoding: This content-coding is used only in the
2393 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2394 * header.
2395 */
2396 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2397 trash.len = 18;
2398 memcpy(trash.str, "Content-Encoding: ", trash.len);
2399 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2400 trash.len += s->comp_algo->name_len;
2401 trash.str[trash.len] = '\0';
2402 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2403 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2404 return 1;
2405
2406fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2407 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2408 return 0;
2409}
2410
2411
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2412/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2413 * processing can continue on next analysers, or zero if it either needs more
2414 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2415 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2416 * when it has nothing left to do, and may remove any analyser when it wants to
2417 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2418 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2419int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2420{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2421 /*
2422 * We will parse the partial (or complete) lines.
2423 * We will check the request syntax, and also join multi-line
2424 * headers. An index of all the lines will be elaborated while
2425 * parsing.
2426 *
2427 * For the parsing, we use a 28 states FSM.
2428 *
2429 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2430 * req->buf->p = beginning of request
2431 * req->buf->p + msg->eoh = end of processed headers / start of current one
2432 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2433 * msg->eol = end of current header or line (LF or CRLF)
2434 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2435 *
2436 * At end of parsing, we may perform a capture of the error (if any), and
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]2437 * we will set a few fields (txn->meth, sn->flags/SN_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2438 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2439 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2440 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2441
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2442 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2443 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2444 struct http_txn *txn = &s->txn;
2445 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2446 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2447
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2448 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]2449 now_ms, __FUNCTION__,
2450 s,
2451 req,
2452 req->rex, req->wex,
2453 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2454 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2455 req->analysers);
2456
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2457 /* we're speaking HTTP here, so let's speak HTTP to the client */
2458 s->srv_error = http_return_srv_error;
2459
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2460 /* There's a protected area at the end of the buffer for rewriting
2461 * purposes. We don't want to start to parse the request if the
2462 * protected area is affected, because we may have to move processed
2463 * data later, which is much more complicated.
2464 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2465 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2466 if (txn->flags & TX_NOT_FIRST) {
2467 if (unlikely(!channel_reserved(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2468 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2469 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2470 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2471 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2472 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2473 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2474 return 0;
2475 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2476 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2477 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2478 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2479 }
2480
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2481 /* Note that we have the same problem with the response ; we
2482 * may want to send a redirect, error or anything which requires
2483 * some spare space. So we'll ensure that we have at least
2484 * maxrewrite bytes available in the response buffer before
2485 * processing that one. This will only affect pipelined
2486 * keep-alive requests.
2487 */
2488 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2489 unlikely(!channel_reserved(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2490 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2491 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2492 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2493 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]2494 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2495 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2496 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2497 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2498 s->rep->flags |= CF_WAKE_WRITE;
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2499 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2500 return 0;
2501 }
2502 }
2503
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2504 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2505 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2506 }
2507
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2508 /* 1: we might have to print this header in debug mode */
2509 if (unlikely((global.mode & MODE_DEBUG) &&
2510 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2511 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2512 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2513
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2514 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2515 /* this is a bit complex : in case of error on the request line,
2516 * we know that rq.l is still zero, so we display only the part
2517 * up to the end of the line (truncated by debug_hdr).
2518 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2519 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2520 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2521
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2522 sol += hdr_idx_first_pos(&txn->hdr_idx);
2523 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2524
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2525 while (cur_idx) {
2526 eol = sol + txn->hdr_idx.v[cur_idx].len;
2527 debug_hdr("clihdr", s, sol, eol);
2528 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2529 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2530 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2531 }
2532
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2533
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2534 /*
2535 * Now we quickly check if we have found a full valid request.
2536 * If not so, we check the FD and buffer states before leaving.
2537 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2538 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2539 * requests are checked first. When waiting for a second request
2540 * on a keep-alive session, if we encounter and error, close, t/o,
2541 * we note the error in the session flags but don't set any state.
2542 * Since the error will be noted there, it will not be counted by
2543 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2544 * Last, we may increase some tracked counters' http request errors on
2545 * the cases that are deliberately the client's fault. For instance,
2546 * a timeout or connection reset is not counted as an error. However
2547 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2548 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2549
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2550 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2551 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2552 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2553 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2554 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2555 session_inc_http_req_ctr(s);
2556 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2557 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2558 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2559 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2560
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2561 /* 1: Since we are in header mode, if there's no space
2562 * left for headers, we won't be able to free more
2563 * later, so the session will never terminate. We
2564 * must terminate it now.
2565 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2566 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2567 /* FIXME: check if URI is set and return Status
2568 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2569 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2570 session_inc_http_req_ctr(s);
2571 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2572 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2573 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2574 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2575 goto return_bad_req;
2576 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2577
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2578 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2579 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2580 if (!(s->flags & SN_ERR_MASK))
2581 s->flags |= SN_ERR_CLICL;
2582
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2583 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2584 goto failed_keep_alive;
2585
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2586 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2587 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2588 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]2589 session_inc_http_err_ctr(s);
2590 }
2591
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2592 txn->status = 400;
2593 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2594 msg->msg_state = HTTP_MSG_ERROR;
2595 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2596
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2597 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2598 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2599 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2600 if (s->listener->counters)
2601 s->listener->counters->failed_req++;
2602
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2603 if (!(s->flags & SN_FINST_MASK))
2604 s->flags |= SN_FINST_R;
2605 return 0;
2606 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2607
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2608 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2609 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]2610 if (!(s->flags & SN_ERR_MASK))
2611 s->flags |= SN_ERR_CLITO;
2612
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2613 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2614 goto failed_keep_alive;
2615
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2616 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2617 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2618 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]2619 session_inc_http_err_ctr(s);
2620 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2621 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2622 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2623 msg->msg_state = HTTP_MSG_ERROR;
2624 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2625
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2626 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2627 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2628 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2629 if (s->listener->counters)
2630 s->listener->counters->failed_req++;
2631
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2632 if (!(s->flags & SN_FINST_MASK))
2633 s->flags |= SN_FINST_R;
2634 return 0;
2635 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2636
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2637 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2638 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2639 if (!(s->flags & SN_ERR_MASK))
2640 s->flags |= SN_ERR_CLICL;
2641
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2642 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2643 goto failed_keep_alive;
2644
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2645 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2646 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]2647 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2648 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2649 msg->msg_state = HTTP_MSG_ERROR;
2650 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2651
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2652 session_inc_http_err_ctr(s);
2653 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2654 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2655 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2656 if (s->listener->counters)
2657 s->listener->counters->failed_req++;
2658
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2659 if (!(s->flags & SN_FINST_MASK))
2660 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2661 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2662 }
2663
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2664 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2665 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2666 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2667#ifdef TCP_QUICKACK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]2668 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]2669 /* We need more data, we have to re-enable quick-ack in case we
2670 * previously disabled it, otherwise we might cause the client
2671 * to delay next data.
2672 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2673 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]2674 }
2675#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2676
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2677 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2678 /* If the client starts to talk, let's fall back to
2679 * request timeout processing.
2680 */
2681 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2682 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2683 }
2684
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2685 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2686 if (!tick_isset(req->analyse_exp)) {
2687 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2688 (txn->flags & TX_WAIT_NEXT_RQ) &&
2689 tick_isset(s->be->timeout.httpka))
2690 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2691 else
2692 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2693 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2694
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2695 /* we're not ready yet */
2696 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2697
2698 failed_keep_alive:
2699 /* Here we process low-level errors for keep-alive requests. In
2700 * short, if the request is not the first one and it experiences
2701 * a timeout, read error or shutdown, we just silently close so
2702 * that the client can try again.
2703 */
2704 txn->status = 0;
2705 msg->msg_state = HTTP_MSG_RQBEFORE;
2706 req->analysers = 0;
2707 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2708 s->logs.level = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2709 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2710 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2711 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2712 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2713
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2714 /* OK now we have a complete HTTP request with indexed headers. Let's
2715 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2716 * 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]2717 * 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]2718 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2719 * byte after the last LF. msg->sov points to the first byte of data.
2720 * msg->eol cannot be trusted because it may have been left uninitialized
2721 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2722 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2723
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2724 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2725 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2726
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2727 if (txn->flags & TX_WAIT_NEXT_RQ) {
2728 /* kill the pending keep-alive timeout */
2729 txn->flags &= ~TX_WAIT_NEXT_RQ;
2730 req->analyse_exp = TICK_ETERNITY;
2731 }
2732
2733
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2734 /* Maybe we found in invalid header name while we were configured not
2735 * to block on that, so we have to capture it now.
2736 */
2737 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2738 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]2739
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2740 /*
2741 * 1: identify the method
2742 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2743 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2744
2745 /* we can make use of server redirect on GET and HEAD */
2746 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2747 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2748
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2749 /*
2750 * 2: check if the URI matches the monitor_uri.
2751 * We have to do this for every request which gets in, because
2752 * the monitor-uri is defined by the frontend.
2753 */
2754 if (unlikely((s->fe->monitor_uri_len != 0) &&
2755 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2756 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2757 s->fe->monitor_uri,
2758 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2759 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2760 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2761 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2762 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2763
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2764 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2765 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2766
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2767 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2768 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2769 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]2770
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2771 ret = acl_pass(ret);
2772 if (cond->pol == ACL_COND_UNLESS)
2773 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2774
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2775 if (ret) {
2776 /* we fail this request, let's return 503 service unavail */
2777 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2778 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2779 if (!(s->flags & SN_ERR_MASK))
2780 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2781 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2782 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2783 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2784
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2785 /* nothing to fail, let's reply normaly */
2786 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2787 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2788 if (!(s->flags & SN_ERR_MASK))
2789 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2790 goto return_prx_cond;
2791 }
2792
2793 /*
2794 * 3: Maybe we have to copy the original REQURI for the logs ?
2795 * Note: we cannot log anymore if the request has been
2796 * classified as invalid.
2797 */
2798 if (unlikely(s->logs.logwait & LW_REQ)) {
2799 /* we have a complete HTTP request that we must log */
2800 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2801 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2802
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2803 if (urilen >= REQURI_LEN)
2804 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2805 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2806 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2807
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2808 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2809 s->do_log(s);
2810 } else {
2811 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2812 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2813 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2814
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2815 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2816 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2817 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2818
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2819 /* ... and check if the request is HTTP/1.1 or above */
2820 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2821 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2822 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2823 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2824 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2825
2826 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2827 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]2828
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2829 /* if the frontend has "option http-use-proxy-header", we'll check if
2830 * we have what looks like a proxied connection instead of a connection,
2831 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2832 * Note that this is *not* RFC-compliant, however browsers and proxies
2833 * happen to do that despite being non-standard :-(
2834 * We consider that a request not beginning with either '/' or '*' is
2835 * a proxied connection, which covers both "scheme://location" and
2836 * CONNECT ip:port.
2837 */
2838 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2839 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2840 txn->flags |= TX_USE_PX_CONN;
2841
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2842 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2843 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2844
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2845 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2846 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2847 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2848 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2849
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2850 /* 6: determine the transfer-length.
2851 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2852 * the presence of a message-body in a REQUEST and its transfer length
2853 * must be determined that way (in order of precedence) :
2854 * 1. The presence of a message-body in a request is signaled by the
2855 * inclusion of a Content-Length or Transfer-Encoding header field
2856 * in the request's header fields. When a request message contains
2857 * both a message-body of non-zero length and a method that does
2858 * not define any semantics for that request message-body, then an
2859 * origin server SHOULD either ignore the message-body or respond
2860 * with an appropriate error message (e.g., 413). A proxy or
2861 * gateway, when presented the same request, SHOULD either forward
2862 * the request inbound with the message- body or ignore the
2863 * message-body when determining a response.
2864 *
2865 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2866 * and the "chunked" transfer-coding (Section 6.2) is used, the
2867 * transfer-length is defined by the use of this transfer-coding.
2868 * If a Transfer-Encoding header field is present and the "chunked"
2869 * transfer-coding is not present, the transfer-length is defined
2870 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2871 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2872 * 3. If a Content-Length header field is present, its decimal value in
2873 * OCTETs represents both the entity-length and the transfer-length.
2874 * If a message is received with both a Transfer-Encoding header
2875 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2876 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2877 * 4. By the server closing the connection. (Closing the connection
2878 * cannot be used to indicate the end of a request body, since that
2879 * would leave no possibility for the server to send back a response.)
2880 *
2881 * Whenever a transfer-coding is applied to a message-body, the set of
2882 * transfer-codings MUST include "chunked", unless the message indicates
2883 * it is terminated by closing the connection. When the "chunked"
2884 * transfer-coding is used, it MUST be the last transfer-coding applied
2885 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2886 */
2887
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2888 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2889 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2890 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2891 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2892 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2893 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2894 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2895 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2896 /* bad transfer-encoding (chunked followed by something else) */
2897 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2898 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2899 break;
2900 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2901 }
2902
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2903 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2904 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2905 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2906 signed long long cl;
2907
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2908 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2909 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2910 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2911 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2912
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2913 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2914 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2915 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2916 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2917
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2918 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2919 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2920 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2921 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2922
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2923 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2924 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2925 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2926 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2927
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2928 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2929 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2930 }
2931
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2932 /* bodyless requests have a known length */
2933 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2934 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2935
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2936 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2937 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2938 req->analyse_exp = TICK_ETERNITY;
2939 return 1;
2940
2941 return_bad_req:
2942 /* We centralize bad requests processing here */
2943 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2944 /* we detected a parsing error. We want to archive this request
2945 * in the dedicated proxy area for later troubleshooting.
2946 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2947 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]2948 }
2949
2950 txn->req.msg_state = HTTP_MSG_ERROR;
2951 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2952 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2953
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2954 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2955 if (s->listener->counters)
2956 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2957
2958 return_prx_cond:
2959 if (!(s->flags & SN_ERR_MASK))
2960 s->flags |= SN_ERR_PRXCOND;
2961 if (!(s->flags & SN_FINST_MASK))
2962 s->flags |= SN_FINST_R;
2963
2964 req->analysers = 0;
2965 req->analyse_exp = TICK_ETERNITY;
2966 return 0;
2967}
2968
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2969
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2970/* This function prepares an applet to handle the stats. It can deal with the
2971 * "100-continue" expectation, check that admin rules are met for POST requests,
2972 * and program a response message if something was unexpected. It cannot fail
2973 * 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]2974 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2975 * s->target which is supposed to already point to the stats applet. The caller
2976 * is expected to have already assigned an appctx to the session.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2977 */
2978int http_handle_stats(struct session *s, struct channel *req)
2979{
2980 struct stats_admin_rule *stats_admin_rule;
2981 struct stream_interface *si = s->rep->prod;
2982 struct http_txn *txn = &s->txn;
2983 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2984 struct uri_auth *uri_auth = s->be->uri_auth;
2985 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2986 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2987
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2988 appctx = si_appctx(si);
2989 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
2990 appctx->st1 = appctx->st2 = 0;
2991 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
2992 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2993
2994 uri = msg->chn->buf->p + msg->sl.rq.u;
2995 lookup = uri + uri_auth->uri_len;
2996
2997 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
2998 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2999 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3000 break;
3001 }
3002 }
3003
3004 if (uri_auth->refresh) {
3005 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3006 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3007 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3008 break;
3009 }
3010 }
3011 }
3012
3013 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3014 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3015 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3016 break;
3017 }
3018 }
3019
3020 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3021 if (memcmp(h, ";st=", 4) == 0) {
3022 int i;
3023 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3024 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3025 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3026 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3027 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3028 break;
3029 }
3030 }
3031 break;
3032 }
3033 }
3034
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3035 appctx->ctx.stats.scope_str = 0;
3036 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3037 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3038 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3039 int itx = 0;
3040 const char *h2;
3041 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3042 const char *err;
3043
3044 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3045 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3046 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3047 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3048 itx++;
3049 h++;
3050 }
3051
3052 if (itx > STAT_SCOPE_TXT_MAXLEN)
3053 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3054 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3055
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3056 /* 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]3057 memcpy(scope_txt, h2, itx);
3058 scope_txt[itx] = '\0';
3059 err = invalid_char(scope_txt);
3060 if (err) {
3061 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3062 appctx->ctx.stats.scope_str = 0;
3063 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3064 }
3065 break;
3066 }
3067 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3068
3069 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3070 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3071 int ret = 1;
3072
3073 if (stats_admin_rule->cond) {
3074 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
3075 ret = acl_pass(ret);
3076 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3077 ret = !ret;
3078 }
3079
3080 if (ret) {
3081 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3082 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3083 break;
3084 }
3085 }
3086
3087 /* Was the status page requested with a POST ? */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3088 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3089 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3090 if (msg->msg_state < HTTP_MSG_100_SENT) {
3091 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
3092 * send an HTTP/1.1 100 Continue intermediate response.
3093 */
3094 if (msg->flags & HTTP_MSGF_VER_11) {
3095 struct hdr_ctx ctx;
3096 ctx.idx = 0;
3097 /* Expect is allowed in 1.1, look for it */
3098 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
3099 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
3100 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
3101 }
3102 }
3103 msg->msg_state = HTTP_MSG_100_SENT;
3104 s->logs.tv_request = now; /* update the request timer to reflect full request */
3105 }
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3106 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3107 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3108 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3109 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3110 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3111 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3112 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3113 else {
3114 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3115 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3116 }
3117
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3118 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3119 return 1;
3120}
3121
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3122/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3123 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3124 */
3125static inline void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
3126{
3127#ifdef IP_TOS
3128 if (from.ss_family == AF_INET)
3129 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3130#endif
3131#ifdef IPV6_TCLASS
3132 if (from.ss_family == AF_INET6) {
3133 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
3134 /* v4-mapped addresses need IP_TOS */
3135 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3136 else
3137 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3138 }
3139#endif
3140}
3141
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3142/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3143 * transaction <txn>. Returns the first rule that prevents further processing
3144 * of the request (auth, deny, ...) or NULL if it executed all rules or stopped
3145 * on an allow. It may set the TX_CLDENY on txn->flags if it encounters a deny
3146 * rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3147 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3148static struct http_req_rule *
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3149http_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]3150{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3151 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3152 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3153 struct hdr_ctx ctx;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3154
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3155 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3156 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3157 continue;
3158
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3159 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3160 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3161 int ret;
3162
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3163 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]3164 ret = acl_pass(ret);
3165
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3166 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3167 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3168
3169 if (!ret) /* condition not matched */
3170 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3171 }
3172
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3173
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3174 switch (rule->action) {
3175 case HTTP_REQ_ACT_ALLOW:
3176 return NULL; /* "allow" rules are OK */
3177
3178 case HTTP_REQ_ACT_DENY:
3179 txn->flags |= TX_CLDENY;
3180 return rule;
3181
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3182 case HTTP_REQ_ACT_TARPIT:
3183 txn->flags |= TX_CLTARPIT;
3184 return rule;
3185
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3186 case HTTP_REQ_ACT_AUTH:
3187 return rule;
3188
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3189 case HTTP_REQ_ACT_REDIR:
3190 return rule;
3191
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3192 case HTTP_REQ_ACT_SET_NICE:
3193 s->task->nice = rule->arg.nice;
3194 break;
3195
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3196 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3197 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3198 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]3199 break;
3200
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3201 case HTTP_REQ_ACT_SET_MARK:
3202#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3203 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3204 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]3205#endif
3206 break;
3207
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3208 case HTTP_REQ_ACT_SET_LOGL:
3209 s->logs.level = rule->arg.loglevel;
3210 break;
3211
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3212 case HTTP_REQ_ACT_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3213 case HTTP_REQ_ACT_SET_HDR:
3214 ctx.idx = 0;
3215 /* remove all occurrences of the header */
3216 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3217 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3218 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3219 }
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3220 if (rule->action == HTTP_REQ_ACT_DEL_HDR)
3221 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3222 /* now fall through to header addition */
3223
3224 case HTTP_REQ_ACT_ADD_HDR:
3225 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3226 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3227 trash.len = rule->arg.hdr_add.name_len;
3228 trash.str[trash.len++] = ':';
3229 trash.str[trash.len++] = ' ';
3230 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3231 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3232 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3233 }
3234 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3235
3236 /* we reached the end of the rules, nothing to report */
Willy Tarreau418c1a02012-12-25 20:52:58 +0100[diff] [blame]3237 return NULL;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3238}
3239
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3240
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3241/* Executes the http-response rules <rules> for session <s>, proxy <px> and
3242 * transaction <txn>. Returns the first rule that prevents further processing
3243 * of the response (deny, ...) or NULL if it executed all rules or stopped
3244 * on an allow. It may set the TX_SVDENY on txn->flags if it encounters a deny
3245 * rule.
3246 */
3247static struct http_res_rule *
3248http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3249{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3250 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3251 struct http_res_rule *rule;
3252 struct hdr_ctx ctx;
3253
3254 list_for_each_entry(rule, rules, list) {
3255 if (rule->action >= HTTP_RES_ACT_MAX)
3256 continue;
3257
3258 /* check optional condition */
3259 if (rule->cond) {
3260 int ret;
3261
3262 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
3263 ret = acl_pass(ret);
3264
3265 if (rule->cond->pol == ACL_COND_UNLESS)
3266 ret = !ret;
3267
3268 if (!ret) /* condition not matched */
3269 continue;
3270 }
3271
3272
3273 switch (rule->action) {
3274 case HTTP_RES_ACT_ALLOW:
3275 return NULL; /* "allow" rules are OK */
3276
3277 case HTTP_RES_ACT_DENY:
3278 txn->flags |= TX_SVDENY;
3279 return rule;
3280
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3281 case HTTP_RES_ACT_SET_NICE:
3282 s->task->nice = rule->arg.nice;
3283 break;
3284
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3285 case HTTP_RES_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3286 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3287 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]3288 break;
3289
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3290 case HTTP_RES_ACT_SET_MARK:
3291#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3292 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3293 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]3294#endif
3295 break;
3296
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3297 case HTTP_RES_ACT_SET_LOGL:
3298 s->logs.level = rule->arg.loglevel;
3299 break;
3300
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3301 case HTTP_RES_ACT_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3302 case HTTP_RES_ACT_SET_HDR:
3303 ctx.idx = 0;
3304 /* remove all occurrences of the header */
3305 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3306 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3307 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3308 }
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3309 if (rule->action == HTTP_RES_ACT_DEL_HDR)
3310 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3311 /* now fall through to header addition */
3312
3313 case HTTP_RES_ACT_ADD_HDR:
3314 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3315 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3316 trash.len = rule->arg.hdr_add.name_len;
3317 trash.str[trash.len++] = ':';
3318 trash.str[trash.len++] = ' ';
3319 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3320 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3321 break;
3322 }
3323 }
3324
3325 /* we reached the end of the rules, nothing to report */
3326 return NULL;
3327}
3328
3329
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3330/* Perform an HTTP redirect based on the information in <rule>. The function
3331 * returns non-zero on success, or zero in case of a, irrecoverable error such
3332 * as too large a request to build a valid response.
3333 */
3334static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3335{
3336 struct http_msg *msg = &txn->req;
3337 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3338 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3339
3340 /* build redirect message */
3341 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3342 case 308:
3343 msg_fmt = HTTP_308;
3344 break;
3345 case 307:
3346 msg_fmt = HTTP_307;
3347 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3348 case 303:
3349 msg_fmt = HTTP_303;
3350 break;
3351 case 301:
3352 msg_fmt = HTTP_301;
3353 break;
3354 case 302:
3355 default:
3356 msg_fmt = HTTP_302;
3357 break;
3358 }
3359
3360 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3361 return 0;
3362
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3363 location = trash.str + trash.len;
3364
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3365 switch(rule->type) {
3366 case REDIRECT_TYPE_SCHEME: {
3367 const char *path;
3368 const char *host;
3369 struct hdr_ctx ctx;
3370 int pathlen;
3371 int hostlen;
3372
3373 host = "";
3374 hostlen = 0;
3375 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]3376 if (http_find_header2("Host", 4, txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3377 host = ctx.line + ctx.val;
3378 hostlen = ctx.vlen;
3379 }
3380
3381 path = http_get_path(txn);
3382 /* build message using path */
3383 if (path) {
3384 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3385 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3386 int qs = 0;
3387 while (qs < pathlen) {
3388 if (path[qs] == '?') {
3389 pathlen = qs;
3390 break;
3391 }
3392 qs++;
3393 }
3394 }
3395 } else {
3396 path = "/";
3397 pathlen = 1;
3398 }
3399
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3400 if (rule->rdr_str) { /* this is an old "redirect" rule */
3401 /* check if we can add scheme + "://" + host + path */
3402 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3403 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3404
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3405 /* add scheme */
3406 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3407 trash.len += rule->rdr_len;
3408 }
3409 else {
3410 /* add scheme with executing log format */
3411 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]3412
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3413 /* check if we can add scheme + "://" + host + path */
3414 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3415 return 0;
3416 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3417 /* add "://" */
3418 memcpy(trash.str + trash.len, "://", 3);
3419 trash.len += 3;
3420
3421 /* add host */
3422 memcpy(trash.str + trash.len, host, hostlen);
3423 trash.len += hostlen;
3424
3425 /* add path */
3426 memcpy(trash.str + trash.len, path, pathlen);
3427 trash.len += pathlen;
3428
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3429 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3430 if (trash.len && trash.str[trash.len - 1] != '/' &&
3431 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3432 if (trash.len > trash.size - 5)
3433 return 0;
3434 trash.str[trash.len] = '/';
3435 trash.len++;
3436 }
3437
3438 break;
3439 }
3440 case REDIRECT_TYPE_PREFIX: {
3441 const char *path;
3442 int pathlen;
3443
3444 path = http_get_path(txn);
3445 /* build message using path */
3446 if (path) {
3447 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3448 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3449 int qs = 0;
3450 while (qs < pathlen) {
3451 if (path[qs] == '?') {
3452 pathlen = qs;
3453 break;
3454 }
3455 qs++;
3456 }
3457 }
3458 } else {
3459 path = "/";
3460 pathlen = 1;
3461 }
3462
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3463 if (rule->rdr_str) { /* this is an old "redirect" rule */
3464 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3465 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3466
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3467 /* add prefix. Note that if prefix == "/", we don't want to
3468 * add anything, otherwise it makes it hard for the user to
3469 * configure a self-redirection.
3470 */
3471 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3472 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3473 trash.len += rule->rdr_len;
3474 }
3475 }
3476 else {
3477 /* add prefix with executing log format */
3478 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3479
3480 /* Check length */
3481 if (trash.len + pathlen > trash.size - 4)
3482 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3483 }
3484
3485 /* add path */
3486 memcpy(trash.str + trash.len, path, pathlen);
3487 trash.len += pathlen;
3488
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3489 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3490 if (trash.len && trash.str[trash.len - 1] != '/' &&
3491 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3492 if (trash.len > trash.size - 5)
3493 return 0;
3494 trash.str[trash.len] = '/';
3495 trash.len++;
3496 }
3497
3498 break;
3499 }
3500 case REDIRECT_TYPE_LOCATION:
3501 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3502 if (rule->rdr_str) { /* this is an old "redirect" rule */
3503 if (trash.len + rule->rdr_len > trash.size - 4)
3504 return 0;
3505
3506 /* add location */
3507 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3508 trash.len += rule->rdr_len;
3509 }
3510 else {
3511 /* add location with executing log format */
3512 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]3513
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3514 /* Check left length */
3515 if (trash.len > trash.size - 4)
3516 return 0;
3517 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3518 break;
3519 }
3520
3521 if (rule->cookie_len) {
3522 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3523 trash.len += 14;
3524 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3525 trash.len += rule->cookie_len;
3526 memcpy(trash.str + trash.len, "\r\n", 2);
3527 trash.len += 2;
3528 }
3529
3530 /* add end of headers and the keep-alive/close status.
3531 * We may choose to set keep-alive if the Location begins
3532 * with a slash, because the client will come back to the
3533 * same server.
3534 */
3535 txn->status = rule->code;
3536 /* let's log the request time */
3537 s->logs.tv_request = now;
3538
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3539 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3540 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3541 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3542 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3543 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3544 /* keep-alive possible */
3545 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3546 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3547 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3548 trash.len += 30;
3549 } else {
3550 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3551 trash.len += 24;
3552 }
3553 }
3554 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3555 trash.len += 4;
3556 bo_inject(txn->rsp.chn, trash.str, trash.len);
3557 /* "eat" the request */
3558 bi_fast_delete(txn->req.chn->buf, msg->sov);
3559 msg->sov = 0;
3560 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3561 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3562 txn->req.msg_state = HTTP_MSG_CLOSED;
3563 txn->rsp.msg_state = HTTP_MSG_DONE;
3564 } else {
3565 /* keep-alive not possible */
3566 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3567 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3568 trash.len += 29;
3569 } else {
3570 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3571 trash.len += 23;
3572 }
3573 stream_int_retnclose(txn->req.chn->prod, &trash);
3574 txn->req.chn->analysers = 0;
3575 }
3576
3577 if (!(s->flags & SN_ERR_MASK))
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3578 s->flags |= SN_ERR_LOCAL;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3579 if (!(s->flags & SN_FINST_MASK))
3580 s->flags |= SN_FINST_R;
3581
3582 return 1;
3583}
3584
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3585/* This stream analyser runs all HTTP request processing which is common to
3586 * frontends and backends, which means blocking ACLs, filters, connection-close,
3587 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3588 * 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]3589 * either needs more data or wants to immediately abort the request (eg: deny,
3590 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3591 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3592int 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]3593{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3594 struct http_txn *txn = &s->txn;
3595 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3596 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3597 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3598 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3599 struct cond_wordlist *wl;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3600
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3601 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3602 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3603 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3604 return 0;
3605 }
3606
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3607 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3608 req->analyse_exp = TICK_ETERNITY;
3609
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3610 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]3611 now_ms, __FUNCTION__,
3612 s,
3613 req,
3614 req->rex, req->wex,
3615 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3616 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3617 req->analysers);
3618
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3619 /* first check whether we have some ACLs set to block this request */
3620 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3621 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]3622
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3623 ret = acl_pass(ret);
3624 if (cond->pol == ACL_COND_UNLESS)
3625 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]3626
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3627 if (ret) {
3628 txn->status = 403;
3629 /* let's log the request time */
3630 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3631 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3632 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3633 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3634 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3635 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3636
Willy Tarreau5d5b5d82012-12-09 12:00:04 +0100[diff] [blame]3637 /* just in case we have some per-backend tracking */
3638 session_inc_be_http_req_ctr(s);
3639
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3640 /* evaluate http-request rules */
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3641 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]3642
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3643 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3644 if (!http_req_last_rule) {
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3645 if (stats_check_uri(s->rep->prod, txn, px)) {
3646 s->target = &http_stats_applet.obj_type;
Willy Tarreau1fbe1c92013-12-01 09:35:41 +0100[diff] [blame]3647 if (unlikely(!stream_int_register_handler(s->rep->prod, objt_applet(s->target)))) {
3648 txn->status = 500;
3649 s->logs.tv_request = now;
3650 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3651
Willy Tarreau1fbe1c92013-12-01 09:35:41 +0100[diff] [blame]3652 if (!(s->flags & SN_ERR_MASK))
3653 s->flags |= SN_ERR_RESOURCE;
3654 goto return_prx_cond;
3655 }
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3656 /* parse the whole stats request and extract the relevant information */
3657 http_handle_stats(s, req);
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3658 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]3659 }
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3660 }
3661
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3662 /* only apply req{,i}{rep/deny/tarpit} if the request was not yet
3663 * blocked by an http-request rule.
3664 */
3665 if (!(txn->flags & (TX_CLDENY|TX_CLTARPIT)) && (px->req_exp != NULL)) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3666 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3667 goto return_bad_req;
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3668 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3669
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3670 /* return a 403 if either rule has blocked */
3671 if (txn->flags & (TX_CLDENY|TX_CLTARPIT)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3672 if (txn->flags & TX_CLDENY) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3673 txn->status = 403;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3674 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3675 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3676 session_inc_http_err_ctr(s);
Willy Tarreau687ba132013-11-16 10:13:35 +0100[diff] [blame]3677 s->fe->fe_counters.denied_req++;
3678 if (s->fe != s->be)
3679 s->be->be_counters.denied_req++;
3680 if (s->listener->counters)
3681 s->listener->counters->denied_req++;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3682 goto return_prx_cond;
3683 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3684
3685 /* When a connection is tarpitted, we use the tarpit timeout,
3686 * which may be the same as the connect timeout if unspecified.
3687 * If unset, then set it to zero because we really want it to
3688 * eventually expire. We build the tarpit as an analyser.
3689 */
3690 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3691 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3692 /* wipe the request out so that we can drop the connection early
3693 * if the client closes first.
3694 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3695 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3696 req->analysers = 0; /* remove switching rules etc... */
3697 req->analysers |= AN_REQ_HTTP_TARPIT;
3698 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3699 if (!req->analyse_exp)
3700 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3701 session_inc_http_err_ctr(s);
Willy Tarreau687ba132013-11-16 10:13:35 +0100[diff] [blame]3702 s->fe->fe_counters.denied_req++;
3703 if (s->fe != s->be)
3704 s->be->be_counters.denied_req++;
3705 if (s->listener->counters)
3706 s->listener->counters->denied_req++;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3707 return 1;
3708 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3709 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3710
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]3711 /* 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]3712 * only change if both the request and the config reference something else.
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]3713 * Option httpclose by itself sets tunnel mode where headers are mangled.
3714 * However, if another mode is set, it will affect it (eg: server-close/
3715 * keep-alive + httpclose = close). Note that we avoid to redo the same work
3716 * if FE and BE have the same settings (common). The method consists in
3717 * checking if options changed between the two calls (implying that either
3718 * one is non-null, or one of them is non-null and we are there for the first
3719 * time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3720 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3721
Willy Tarreau416ce612014-01-31 15:45:34 +0100[diff] [blame]3722 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]3723 ((s->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE))) {
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]3724 int tmp = TX_CON_WANT_KAL;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3725
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]3726 if (!((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
3727 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
3728 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
3729 tmp = TX_CON_WANT_TUN;
3730
3731 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
3732 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
3733 tmp = TX_CON_WANT_TUN;
3734 }
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]3735
3736 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]3737 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
3738 /* option httpclose + server_close => forceclose */
3739 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
3740 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
3741 tmp = TX_CON_WANT_CLO;
3742 else
3743 tmp = TX_CON_WANT_SCL;
3744 }
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]3745
3746 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
3747 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3748 tmp = TX_CON_WANT_CLO;
3749
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3750 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3751 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3752
Willy Tarreau416ce612014-01-31 15:45:34 +0100[diff] [blame]3753 if (!(txn->flags & TX_HDR_CONN_PRS) &&
3754 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3755 /* parse the Connection header and possibly clean it */
3756 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3757 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3758 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3759 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3760 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3761 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3762 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3763 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3764 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3765
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3766 /* check if client or config asks for explicit close in KAL/SCL */
3767 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3768 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3769 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3770 (!(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]3771 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3772 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3773 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3774 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3775
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3776 /* we can be blocked here because the request needs to be authenticated,
3777 * either to pass or to access stats.
3778 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3779 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_AUTH) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]3780 char *realm = http_req_last_rule->arg.auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3781
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3782 if (!realm)
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3783 realm = (objt_applet(s->target) == &http_stats_applet) ? STATS_DEFAULT_REALM : px->id;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3784
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3785 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]3786 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3787 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3788 /* on 401 we still count one error, because normal browsing
3789 * won't significantly increase the counter but brute force
3790 * attempts will.
3791 */
3792 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3793 goto return_prx_cond;
3794 }
3795
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3796 /* add request headers from the rule sets in the same order */
3797 list_for_each_entry(wl, &px->req_add, list) {
3798 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3799 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]3800 ret = acl_pass(ret);
3801 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3802 ret = !ret;
3803 if (!ret)
3804 continue;
3805 }
3806
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3807 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3808 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3809 }
3810
3811 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_REDIR) {
3812 if (!http_apply_redirect_rule(http_req_last_rule->arg.redir, s, txn))
3813 goto return_bad_req;
3814 req->analyse_exp = TICK_ETERNITY;
3815 return 1;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3816 }
3817
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3818 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3819 /* process the stats request now */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3820 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3821 s->fe->fe_counters.intercepted_req++;
3822
3823 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3824 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
3825 if (!(s->flags & SN_FINST_MASK))
3826 s->flags |= SN_FINST_R;
3827
3828 req->analyse_exp = TICK_ETERNITY;
Willy Tarreau51437d22013-12-29 00:43:40 +0100[diff] [blame]3829 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3830 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3831 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3832
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3833 /* check whether we have some ACLs set to redirect this request */
3834 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3835 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3836 int ret;
3837
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3838 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]3839 ret = acl_pass(ret);
3840 if (rule->cond->pol == ACL_COND_UNLESS)
3841 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3842 if (!ret)
3843 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3844 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3845 if (!http_apply_redirect_rule(rule, s, txn))
3846 goto return_bad_req;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3847
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3848 req->analyse_exp = TICK_ETERNITY;
3849 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3850 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3851
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3852 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3853 * If this happens, then the data will not come immediately, so we must
3854 * send all what we have without waiting. Note that due to the small gain
3855 * 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]3856 * 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]3857 * itself once used.
3858 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3859 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3860
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3861 /* that's OK for us now, let's move on to next analysers */
3862 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3863
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3864 return_bad_req:
3865 /* We centralize bad requests processing here */
3866 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3867 /* we detected a parsing error. We want to archive this request
3868 * in the dedicated proxy area for later troubleshooting.
3869 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3870 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]3871 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3872
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3873 txn->req.msg_state = HTTP_MSG_ERROR;
3874 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3875 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3876
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3877 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3878 if (s->listener->counters)
3879 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3880
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3881 return_prx_cond:
3882 if (!(s->flags & SN_ERR_MASK))
3883 s->flags |= SN_ERR_PRXCOND;
3884 if (!(s->flags & SN_FINST_MASK))
3885 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3886
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3887 req->analysers = 0;
3888 req->analyse_exp = TICK_ETERNITY;
3889 return 0;
3890}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3891
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3892/* This function performs all the processing enabled for the current request.
3893 * It returns 1 if the processing can continue on next analysers, or zero if it
3894 * needs more data, encounters an error, or wants to immediately abort the
3895 * request. It relies on buffers flags, and updates s->req->analysers.
3896 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3897int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3898{
3899 struct http_txn *txn = &s->txn;
3900 struct http_msg *msg = &txn->req;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3901 struct connection *cli_conn = objt_conn(req->prod->end);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3902
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3903 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3904 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3905 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3906 return 0;
3907 }
3908
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3909 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]3910 now_ms, __FUNCTION__,
3911 s,
3912 req,
3913 req->rex, req->wex,
3914 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3915 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3916 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3917
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3918 if (s->fe->comp || s->be->comp)
3919 select_compression_request_header(s, req->buf);
3920
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3921 /*
3922 * Right now, we know that we have processed the entire headers
3923 * and that unwanted requests have been filtered out. We can do
3924 * whatever we want with the remaining request. Also, now we
3925 * may have separate values for ->fe, ->be.
3926 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3927
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3928 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3929 * If HTTP PROXY is set we simply get remote server address parsing
3930 * incoming request. Note that this requires that a connection is
3931 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3932 */
3933 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3934 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]3935 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3936
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]3937 /* Note that for now we don't reuse existing proxy connections */
3938 if (unlikely((conn = si_alloc_conn(req->cons, 0)) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3939 txn->req.msg_state = HTTP_MSG_ERROR;
3940 txn->status = 500;
3941 req->analysers = 0;
3942 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
3943
3944 if (!(s->flags & SN_ERR_MASK))
3945 s->flags |= SN_ERR_RESOURCE;
3946 if (!(s->flags & SN_FINST_MASK))
3947 s->flags |= SN_FINST_R;
3948
3949 return 0;
3950 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]3951
3952 path = http_get_path(txn);
3953 url2sa(req->buf->p + msg->sl.rq.u,
3954 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]3955 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]3956 /* if the path was found, we have to remove everything between
3957 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
3958 * found, we need to replace from req->buf->p + msg->sl.rq.u for
3959 * u_l characters by a single "/".
3960 */
3961 if (path) {
3962 char *cur_ptr = req->buf->p;
3963 char *cur_end = cur_ptr + txn->req.sl.rq.l;
3964 int delta;
3965
3966 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
3967 http_msg_move_end(&txn->req, delta);
3968 cur_end += delta;
3969 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
3970 goto return_bad_req;
3971 }
3972 else {
3973 char *cur_ptr = req->buf->p;
3974 char *cur_end = cur_ptr + txn->req.sl.rq.l;
3975 int delta;
3976
3977 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
3978 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
3979 http_msg_move_end(&txn->req, delta);
3980 cur_end += delta;
3981 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
3982 goto return_bad_req;
3983 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3984 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3985
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3986 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3987 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3988 * Note that doing so might move headers in the request, but
3989 * the fields will stay coherent and the URI will not move.
3990 * This should only be performed in the backend.
3991 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3992 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3993 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3994 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3995
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3996 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3997 * 8: the appsession cookie was looked up very early in 1.2,
3998 * so let's do the same now.
3999 */
4000
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4001 /* It needs to look into the URI unless persistence must be ignored */
4002 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4003 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]4004 }
4005
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4006 /* add unique-id if "header-unique-id" is specified */
4007
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4008 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
4009 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4010 goto return_bad_req;
4011 s->unique_id[0] = '\0';
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4012 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4013 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4014
4015 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4016 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
4017 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4018 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4019 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]4020 goto return_bad_req;
4021 }
4022
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4023 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4024 * 9: add X-Forwarded-For if either the frontend or the backend
4025 * asks for it.
4026 */
4027 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4028 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4029 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]4030 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
4031 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]4032 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4033 /* The header is set to be added only if none is present
4034 * and we found it, so don't do anything.
4035 */
4036 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4037 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4038 /* Add an X-Forwarded-For header unless the source IP is
4039 * in the 'except' network range.
4040 */
4041 if ((!s->fe->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4042 (((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]4043 != s->fe->except_net.s_addr) &&
4044 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4045 (((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]4046 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4047 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4048 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4049 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4050
4051 /* Note: we rely on the backend to get the header name to be used for
4052 * x-forwarded-for, because the header is really meant for the backends.
4053 * However, if the backend did not specify any option, we have to rely
4054 * on the frontend's header name.
4055 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4056 if (s->be->fwdfor_hdr_len) {
4057 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4058 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4059 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4060 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4061 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4062 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4063 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]4064
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4065 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]4066 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4067 }
4068 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4069 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4070 /* FIXME: for the sake of completeness, we should also support
4071 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4072 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4073 int len;
4074 char pn[INET6_ADDRSTRLEN];
4075 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4076 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4077 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4078
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4079 /* Note: we rely on the backend to get the header name to be used for
4080 * x-forwarded-for, because the header is really meant for the backends.
4081 * However, if the backend did not specify any option, we have to rely
4082 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4083 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4084 if (s->be->fwdfor_hdr_len) {
4085 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4086 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4087 } else {
4088 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4089 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4090 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4091 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4092
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4093 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]4094 goto return_bad_req;
4095 }
4096 }
4097
4098 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4099 * 10: add X-Original-To if either the frontend or the backend
4100 * asks for it.
4101 */
4102 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
4103
4104 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4105 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4106 /* Add an X-Original-To header unless the destination IP is
4107 * in the 'except' network range.
4108 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4109 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4110
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4111 if (cli_conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4112 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4113 (((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]4114 != s->fe->except_to.s_addr) &&
4115 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4116 (((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]4117 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4118 int len;
4119 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4120 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4121
4122 /* Note: we rely on the backend to get the header name to be used for
4123 * x-original-to, because the header is really meant for the backends.
4124 * However, if the backend did not specify any option, we have to rely
4125 * on the frontend's header name.
4126 */
4127 if (s->be->orgto_hdr_len) {
4128 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4129 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4130 } else {
4131 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4132 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4133 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4134 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]4135
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4136 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]4137 goto return_bad_req;
4138 }
4139 }
4140 }
4141
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4142 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4143 * If an "Upgrade" token is found, the header is left untouched in order not to have
4144 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4145 * "Upgrade" is present in the Connection header.
4146 */
4147 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4148 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4149 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4150 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4151 unsigned int want_flags = 0;
4152
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4153 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4154 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4155 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4156 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4157 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4158 want_flags |= TX_CON_CLO_SET;
4159 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4160 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4161 ((s->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
4162 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4163 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4164 want_flags |= TX_CON_KAL_SET;
4165 }
4166
4167 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4168 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4169 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4170
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4171
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4172 /* If we have no server assigned yet and we're balancing on url_param
4173 * with a POST request, we may be interested in checking the body for
4174 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4175 */
4176 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
4177 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4178 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4179 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4180 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4181 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4182
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4183 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4184 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4185#ifdef TCP_QUICKACK
4186 /* We expect some data from the client. Unless we know for sure
4187 * we already have a full request, we have to re-enable quick-ack
4188 * in case we previously disabled it, otherwise we might cause
4189 * the client to delay further data.
4190 */
4191 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4192 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4193 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4194 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4195 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4196#endif
4197 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4198
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4199 /*************************************************************
4200 * OK, that's finished for the headers. We have done what we *
4201 * could. Let's switch to the DATA state. *
4202 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4203 req->analyse_exp = TICK_ETERNITY;
4204 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4205
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4206 /* if the server closes the connection, we want to immediately react
4207 * and close the socket to save packets and syscalls.
4208 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4209 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
4210 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4211
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4212 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4213 /* OK let's go on with the BODY now */
4214 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4215
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4216 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4217 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4218 /* we detected a parsing error. We want to archive this request
4219 * in the dedicated proxy area for later troubleshooting.
4220 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4221 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]4222 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4223
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4224 txn->req.msg_state = HTTP_MSG_ERROR;
4225 txn->status = 400;
4226 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4227 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4228
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4229 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4230 if (s->listener->counters)
4231 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4232
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4233 if (!(s->flags & SN_ERR_MASK))
4234 s->flags |= SN_ERR_PRXCOND;
4235 if (!(s->flags & SN_FINST_MASK))
4236 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4237 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4238}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4239
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4240/* This function is an analyser which processes the HTTP tarpit. It always
4241 * returns zero, at the beginning because it prevents any other processing
4242 * from occurring, and at the end because it terminates the request.
4243 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4244int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4245{
4246 struct http_txn *txn = &s->txn;
4247
4248 /* This connection is being tarpitted. The CLIENT side has
4249 * already set the connect expiration date to the right
4250 * timeout. We just have to check that the client is still
4251 * there and that the timeout has not expired.
4252 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4253 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4254 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4255 !tick_is_expired(req->analyse_exp, now_ms))
4256 return 0;
4257
4258 /* We will set the queue timer to the time spent, just for
4259 * logging purposes. We fake a 500 server error, so that the
4260 * attacker will not suspect his connection has been tarpitted.
4261 * It will not cause trouble to the logs because we can exclude
4262 * the tarpitted connections by filtering on the 'PT' status flags.
4263 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4264 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4265
4266 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4267 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4268 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4269
4270 req->analysers = 0;
4271 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4272
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4273 if (!(s->flags & SN_ERR_MASK))
4274 s->flags |= SN_ERR_PRXCOND;
4275 if (!(s->flags & SN_FINST_MASK))
4276 s->flags |= SN_FINST_T;
4277 return 0;
4278}
4279
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4280/* This function is an analyser which waits for the HTTP request body. It waits
4281 * for either the buffer to be full, or the full advertised contents to have
4282 * reached the buffer. It must only be called after the standard HTTP request
4283 * processing has occurred, because it expects the request to be parsed and will
4284 * look for the Expect header. It may send a 100-Continue interim response. It
4285 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4286 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4287 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4288 */
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4289int http_wait_for_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4290{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4291 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4292 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4293
4294 /* We have to parse the HTTP request body to find any required data.
4295 * "balance url_param check_post" should have been the only way to get
4296 * into this. We were brought here after HTTP header analysis, so all
4297 * related structures are ready.
4298 */
4299
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4300 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4301 /* This is the first call */
4302 if (msg->msg_state < HTTP_MSG_BODY)
4303 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4304
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4305 if (msg->msg_state < HTTP_MSG_100_SENT) {
4306 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4307 * send an HTTP/1.1 100 Continue intermediate response.
4308 */
4309 if (msg->flags & HTTP_MSGF_VER_11) {
4310 struct hdr_ctx ctx;
4311 ctx.idx = 0;
4312 /* Expect is allowed in 1.1, look for it */
4313 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4314 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
4315 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
4316 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4317 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4318 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4319 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4320
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4321 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4322 * req->buf->p still points to the beginning of the message. We
4323 * must save the body in msg->next because it survives buffer
4324 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4325 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4326 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4327
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4328 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4329 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4330 else
4331 msg->msg_state = HTTP_MSG_DATA;
4332 }
4333
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4334 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4335 /* We're in content-length mode, we just have to wait for enough data. */
4336 if (req->buf->i - msg->sov < msg->body_len)
4337 goto missing_data;
4338
4339 /* OK we have everything we need now */
4340 goto http_end;
4341 }
4342
4343 /* OK here we're parsing a chunked-encoded message */
4344
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4345 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4346 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4347 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4348 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4349 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4350 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4351
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4352 if (!ret)
4353 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4354 else if (ret < 0) {
4355 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4356 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4357 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4358 }
4359
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4360 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4361 * 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]4362 * least a whole chunk or the whole content length bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4363 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4364 if (msg->msg_state == HTTP_MSG_TRAILERS)
4365 goto http_end;
4366
Willy Tarreau226071e2014-04-10 11:55:45 +0200[diff] [blame]4367 if (req->buf->i - msg->sov >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4368 goto http_end;
4369
4370 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4371 /* we get here if we need to wait for more data. If the buffer is full,
4372 * we have the maximum we can expect.
4373 */
4374 if (buffer_full(req->buf, global.tune.maxrewrite))
4375 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4376
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4377 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4378 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4379 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4380
4381 if (!(s->flags & SN_ERR_MASK))
4382 s->flags |= SN_ERR_CLITO;
4383 if (!(s->flags & SN_FINST_MASK))
4384 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4385 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4386 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4387
4388 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4389 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4390 /* Not enough data. We'll re-use the http-request
4391 * timeout here. Ideally, we should set the timeout
4392 * relative to the accept() date. We just set the
4393 * request timeout once at the beginning of the
4394 * request.
4395 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4396 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4397 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4398 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4399 return 0;
4400 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4401
4402 http_end:
4403 /* The situation will not evolve, so let's give up on the analysis. */
4404 s->logs.tv_request = now; /* update the request timer to reflect full request */
4405 req->analysers &= ~an_bit;
4406 req->analyse_exp = TICK_ETERNITY;
4407 return 1;
4408
4409 return_bad_req: /* let's centralize all bad requests */
4410 txn->req.msg_state = HTTP_MSG_ERROR;
4411 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4412 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4413
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4414 if (!(s->flags & SN_ERR_MASK))
4415 s->flags |= SN_ERR_PRXCOND;
4416 if (!(s->flags & SN_FINST_MASK))
4417 s->flags |= SN_FINST_R;
4418
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4419 return_err_msg:
4420 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4421 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4422 if (s->listener->counters)
4423 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4424 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4425}
4426
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4427/* send a server's name with an outgoing request over an established connection.
4428 * Note: this function is designed to be called once the request has been scheduled
4429 * for being forwarded. This is the reason why it rewinds the buffer before
4430 * proceeding.
4431 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4432int 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]4433
4434 struct hdr_ctx ctx;
4435
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4436 char *hdr_name = be->server_id_hdr_name;
4437 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4438 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4439 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4440 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4441
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4442 ctx.idx = 0;
4443
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4444 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4445 if (old_o) {
4446 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4447 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4448 txn->req.next += old_o;
4449 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4450 }
4451
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4452 old_i = chn->buf->i;
4453 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]4454 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4455 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4456 }
4457
4458 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4459 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4460 memcpy(hdr_val, hdr_name, hdr_name_len);
4461 hdr_val += hdr_name_len;
4462 *hdr_val++ = ':';
4463 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4464 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4465 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]4466
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4467 if (old_o) {
4468 /* If this was a forwarded request, we must readjust the amount of
4469 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4470 * variations. Note that the current state is >= HTTP_MSG_BODY,
4471 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4472 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4473 old_o += chn->buf->i - old_i;
4474 b_adv(chn->buf, old_o);
4475 txn->req.next -= old_o;
4476 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4477 }
4478
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4479 return 0;
4480}
4481
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4482/* Terminate current transaction and prepare a new one. This is very tricky
4483 * right now but it works.
4484 */
4485void http_end_txn_clean_session(struct session *s)
4486{
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4487 int prev_status = s->txn.status;
4488
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4489 /* FIXME: We need a more portable way of releasing a backend's and a
4490 * server's connections. We need a safer way to reinitialize buffer
4491 * flags. We also need a more accurate method for computing per-request
4492 * data.
4493 */
4494 http_silent_debug(__LINE__, s);
4495
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4496 /* unless we're doing keep-alive, we want to quickly close the connection
4497 * to the server.
4498 */
4499 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4500 !si_conn_ready(s->req->cons)) {
4501 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4502 si_shutr(s->req->cons);
4503 si_shutw(s->req->cons);
4504 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4505
4506 http_silent_debug(__LINE__, s);
4507
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4508 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4509 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4510 if (unlikely(s->srv_conn))
4511 sess_change_server(s, NULL);
4512 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4513
4514 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4515 session_process_counters(s);
Willy Tarreauf3338342014-01-28 21:40:28 +0100[diff] [blame]4516 session_stop_content_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4517
4518 if (s->txn.status) {
4519 int n;
4520
4521 n = s->txn.status / 100;
4522 if (n < 1 || n > 5)
4523 n = 0;
4524
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4525 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4526 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4527 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4528 s->fe->fe_counters.p.http.comp_rsp++;
4529 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4530 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4531 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4532 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4533 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4534 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4535 s->be->be_counters.p.http.comp_rsp++;
4536 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4537 }
4538
4539 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4540 s->logs.bytes_in -= s->req->buf->i;
4541 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4542
4543 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4544 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4545 !(s->flags & SN_MONITOR) &&
4546 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4547 s->do_log(s);
4548 }
4549
4550 s->logs.accept_date = date; /* user-visible date for logging */
4551 s->logs.tv_accept = now; /* corrected date for internal use */
4552 tv_zero(&s->logs.tv_request);
4553 s->logs.t_queue = -1;
4554 s->logs.t_connect = -1;
4555 s->logs.t_data = -1;
4556 s->logs.t_close = 0;
4557 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4558 s->logs.srv_queue_size = 0; /* we will get this number soon */
4559
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4560 s->logs.bytes_in = s->req->total = s->req->buf->i;
4561 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4562
4563 if (s->pend_pos)
4564 pendconn_free(s->pend_pos);
4565
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4566 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4567 if (s->flags & SN_CURR_SESS) {
4568 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4569 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4570 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4571 if (may_dequeue_tasks(objt_server(s->target), s->be))
4572 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4573 }
4574
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4575 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4576
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4577 /* only release our endpoint if we don't intend to reuse the
4578 * connection.
4579 */
4580 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4581 !si_conn_ready(s->req->cons)) {
4582 si_release_endpoint(s->req->cons);
4583 }
4584
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4585 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4586 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4587 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4588 s->req->cons->exp = TICK_ETERNITY;
Willy Tarreauc9200962013-12-31 23:03:09 +0100[diff] [blame]4589 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]4590 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4591 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]4592 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]4593 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE|SN_SRV_REUSED);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4594
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4595 s->txn.meth = 0;
4596 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4597 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4598
4599 if (prev_status == 401 || prev_status == 407) {
4600 /* In HTTP keep-alive mode, if we receive a 401, we still have
4601 * a chance of being able to send the visitor again to the same
4602 * server over the same connection. This is required by some
4603 * broken protocols such as NTLM, and anyway whenever there is
4604 * an opportunity for sending the challenge to the proper place,
4605 * it's better to do it (at least it helps with debugging).
4606 */
4607 s->txn.flags |= TX_PREFER_LAST;
4608 }
4609
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4610 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4611 s->req->cons->flags |= SI_FL_INDEP_STR;
4612
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4613 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4614 s->req->flags |= CF_NEVER_WAIT;
4615 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4616 }
4617
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4618 /* if the request buffer is not empty, it means we're
4619 * about to process another request, so send pending
4620 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4621 * Just don't do this if the buffer is close to be full,
4622 * because the request will wait for it to flush a little
4623 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4624 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4625 if (s->req->buf->i) {
4626 if (s->rep->buf->o &&
4627 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4628 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]4629 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4630 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4631
4632 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4633 channel_auto_read(s->req);
4634 channel_auto_close(s->req);
4635 channel_auto_read(s->rep);
4636 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4637
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]4638 /* we're in keep-alive with an idle connection, monitor it */
4639 si_idle_conn(s->req->cons);
4640
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4641 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4642 s->rep->analysers = 0;
4643
4644 http_silent_debug(__LINE__, s);
4645}
4646
4647
4648/* This function updates the request state machine according to the response
4649 * state machine and buffer flags. It returns 1 if it changes anything (flag
4650 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4651 * it is only used to find when a request/response couple is complete. Both
4652 * this function and its equivalent should loop until both return zero. It
4653 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4654 */
4655int http_sync_req_state(struct session *s)
4656{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4657 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4658 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4659 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4660 unsigned int old_state = txn->req.msg_state;
4661
4662 http_silent_debug(__LINE__, s);
4663 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4664 return 0;
4665
4666 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4667 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4668 * We can shut the read side unless we want to abort_on_close,
4669 * or we have a POST request. The issue with POST requests is
4670 * that some browsers still send a CRLF after the request, and
4671 * this CRLF must be read so that it does not remain in the kernel
4672 * buffers, otherwise a close could cause an RST on some systems
4673 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4674 * Note that if we're using keep-alive on the client side, we'd
4675 * rather poll now and keep the polling enabled for the whole
4676 * session's life than enabling/disabling it between each
4677 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4678 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4679 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
4680 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
4681 !(s->be->options & PR_O_ABRT_CLOSE) &&
4682 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4683 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4684
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4685 /* if the server closes the connection, we want to immediately react
4686 * and close the socket to save packets and syscalls.
4687 */
4688 chn->cons->flags |= SI_FL_NOHALF;
4689
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4690 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4691 goto wait_other_side;
4692
4693 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4694 /* The server has not finished to respond, so we
4695 * don't want to move in order not to upset it.
4696 */
4697 goto wait_other_side;
4698 }
4699
4700 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4701 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4702 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4703 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4704 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4705 goto wait_other_side;
4706 }
4707
4708 /* When we get here, it means that both the request and the
4709 * response have finished receiving. Depending on the connection
4710 * mode, we'll have to wait for the last bytes to leave in either
4711 * direction, and sometimes for a close to be effective.
4712 */
4713
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4714 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4715 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4716 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4717 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4718 }
4719 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4720 /* Option forceclose is set, or either side wants to close,
4721 * let's enforce it now that we're not expecting any new
4722 * data to come. The caller knows the session is complete
4723 * once both states are CLOSED.
4724 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4725 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4726 channel_shutr_now(chn);
4727 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4728 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4729 }
4730 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4731 /* The last possible modes are keep-alive and tunnel. Tunnel mode
4732 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4733 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4734 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
4735 channel_auto_read(chn);
4736 txn->req.msg_state = HTTP_MSG_TUNNEL;
4737 chn->flags |= CF_NEVER_WAIT;
4738 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4739 }
4740
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4741 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4742 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4743 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4744
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4745 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4746 txn->req.msg_state = HTTP_MSG_CLOSING;
4747 goto http_msg_closing;
4748 }
4749 else {
4750 txn->req.msg_state = HTTP_MSG_CLOSED;
4751 goto http_msg_closed;
4752 }
4753 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4754 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4755 }
4756
4757 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4758 http_msg_closing:
4759 /* nothing else to forward, just waiting for the output buffer
4760 * to be empty and for the shutw_now to take effect.
4761 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4762 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4763 txn->req.msg_state = HTTP_MSG_CLOSED;
4764 goto http_msg_closed;
4765 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4766 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4767 txn->req.msg_state = HTTP_MSG_ERROR;
4768 goto wait_other_side;
4769 }
4770 }
4771
4772 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4773 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4774 /* see above in MSG_DONE why we only do this in these states */
4775 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
4776 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
4777 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]4778 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4779 goto wait_other_side;
4780 }
4781
4782 wait_other_side:
4783 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4784 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4785}
4786
4787
4788/* This function updates the response state machine according to the request
4789 * state machine and buffer flags. It returns 1 if it changes anything (flag
4790 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4791 * it is only used to find when a request/response couple is complete. Both
4792 * this function and its equivalent should loop until both return zero. It
4793 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4794 */
4795int http_sync_res_state(struct session *s)
4796{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4797 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4798 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4799 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4800 unsigned int old_state = txn->rsp.msg_state;
4801
4802 http_silent_debug(__LINE__, s);
4803 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4804 return 0;
4805
4806 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4807 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4808 * still monitor the server connection for a possible close
4809 * while the request is being uploaded, so we don't disable
4810 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4811 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4812 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4813
4814 if (txn->req.msg_state == HTTP_MSG_ERROR)
4815 goto wait_other_side;
4816
4817 if (txn->req.msg_state < HTTP_MSG_DONE) {
4818 /* The client seems to still be sending data, probably
4819 * because we got an error response during an upload.
4820 * We have the choice of either breaking the connection
4821 * or letting it pass through. Let's do the later.
4822 */
4823 goto wait_other_side;
4824 }
4825
4826 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4827 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4828 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4829 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4830 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4831 goto wait_other_side;
4832 }
4833
4834 /* When we get here, it means that both the request and the
4835 * response have finished receiving. Depending on the connection
4836 * mode, we'll have to wait for the last bytes to leave in either
4837 * direction, and sometimes for a close to be effective.
4838 */
4839
4840 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4841 /* Server-close mode : shut read and wait for the request
4842 * side to close its output buffer. The caller will detect
4843 * when we're in DONE and the other is in CLOSED and will
4844 * catch that for the final cleanup.
4845 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4846 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4847 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4848 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4849 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4850 /* Option forceclose is set, or either side wants to close,
4851 * let's enforce it now that we're not expecting any new
4852 * data to come. The caller knows the session is complete
4853 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4854 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4855 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4856 channel_shutr_now(chn);
4857 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4858 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4859 }
4860 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4861 /* The last possible modes are keep-alive and tunnel. Tunnel will
4862 * need to forward remaining data. Keep-alive will need to monitor
4863 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4864 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4865 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4866 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4867 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
4868 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4869 }
4870
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4871 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4872 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4873 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4874 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4875 goto http_msg_closing;
4876 }
4877 else {
4878 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4879 goto http_msg_closed;
4880 }
4881 }
4882 goto wait_other_side;
4883 }
4884
4885 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4886 http_msg_closing:
4887 /* nothing else to forward, just waiting for the output buffer
4888 * to be empty and for the shutw_now to take effect.
4889 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4890 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4891 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4892 goto http_msg_closed;
4893 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4894 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4895 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4896 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4897 if (objt_server(s->target))
4898 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4899 goto wait_other_side;
4900 }
4901 }
4902
4903 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4904 http_msg_closed:
4905 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4906 bi_erase(chn);
4907 channel_auto_close(chn);
4908 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4909 goto wait_other_side;
4910 }
4911
4912 wait_other_side:
4913 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4914 /* We force the response to leave immediately if we're waiting for the
4915 * other side, since there is no pending shutdown to push it out.
4916 */
4917 if (!channel_is_empty(chn))
4918 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4919 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4920}
4921
4922
4923/* Resync the request and response state machines. Return 1 if either state
4924 * changes.
4925 */
4926int http_resync_states(struct session *s)
4927{
4928 struct http_txn *txn = &s->txn;
4929 int old_req_state = txn->req.msg_state;
4930 int old_res_state = txn->rsp.msg_state;
4931
4932 http_silent_debug(__LINE__, s);
4933 http_sync_req_state(s);
4934 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4935 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4936 if (!http_sync_res_state(s))
4937 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4938 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4939 if (!http_sync_req_state(s))
4940 break;
4941 }
4942 http_silent_debug(__LINE__, s);
4943 /* OK, both state machines agree on a compatible state.
4944 * There are a few cases we're interested in :
4945 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4946 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4947 * directions, so let's simply disable both analysers.
4948 * - HTTP_MSG_CLOSED on the response only means we must abort the
4949 * request.
4950 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4951 * with server-close mode means we've completed one request and we
4952 * must re-initialize the server connection.
4953 */
4954
4955 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4956 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4957 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4958 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4959 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4960 channel_auto_close(s->req);
4961 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4962 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4963 channel_auto_close(s->rep);
4964 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4965 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4966 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
4967 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4968 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4969 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4970 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4971 channel_auto_close(s->rep);
4972 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4973 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4974 channel_abort(s->req);
4975 channel_auto_close(s->req);
4976 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4977 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4978 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4979 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
4980 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4981 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4982 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4983 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4984 /* server-close/keep-alive: terminate this transaction,
4985 * possibly killing the server connection and reinitialize
4986 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4987 */
4988 http_end_txn_clean_session(s);
4989 }
4990
4991 http_silent_debug(__LINE__, s);
4992 return txn->req.msg_state != old_req_state ||
4993 txn->rsp.msg_state != old_res_state;
4994}
4995
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4996/* This function is an analyser which forwards request body (including chunk
4997 * sizes if any). It is called as soon as we must forward, even if we forward
4998 * zero byte. The only situation where it must not be called is when we're in
4999 * tunnel mode and we want to forward till the close. It's used both to forward
5000 * remaining data and to resync after end of body. It expects the msg_state to
5001 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5002 * 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]5003 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5004 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5005 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5006int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5007{
5008 struct http_txn *txn = &s->txn;
5009 struct http_msg *msg = &s->txn.req;
5010
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5011 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5012 return 0;
5013
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5014 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]5015 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5016 /* Output closed while we were sending data. We must abort and
5017 * wake the other side up.
5018 */
5019 msg->msg_state = HTTP_MSG_ERROR;
5020 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5021 return 1;
5022 }
5023
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5024 /* Some post-connect processing might want us to refrain from starting to
5025 * forward data. Currently, the only reason for this is "balance url_param"
5026 * whichs need to parse/process the request after we've enabled forwarding.
5027 */
5028 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
5029 if (!(s->rep->flags & CF_READ_ATTACHED)) {
5030 channel_auto_connect(req);
5031 goto missing_data;
5032 }
5033 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5034 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5035
5036 /* Note that we don't have to send 100-continue back because we don't
5037 * need the data to complete our job, and it's up to the server to
5038 * decide whether to return 100, 417 or anything else in return of
5039 * an "Expect: 100-continue" header.
5040 */
5041
5042 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5043 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5044 * req->buf->p still points to the beginning of the message. We
5045 * must save the body in msg->next because it survives buffer
5046 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5047 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]5048 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5049
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5050 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5051 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5052 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5053 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5054 }
5055
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5056 /* in most states, we should abort in case of early close */
5057 channel_auto_close(req);
5058
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5059 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5060 http_silent_debug(__LINE__, s);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]5061
5062 /* we may have some pending data starting at req->buf->p */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5063 if (msg->chunk_len || msg->next) {
5064 msg->chunk_len += msg->next;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5065 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5066 msg->next = 0;
Willy Tarreau1234f4a2014-04-17 21:14:47 +0200[diff] [blame^]5067 msg->sov = 0;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5068 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5069
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5070 if (msg->msg_state == HTTP_MSG_DATA) {
5071 /* must still forward */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5072 if (req->to_forward) {
5073 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5074 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5075 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5076
5077 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5078 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5079 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5080 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5081 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5082 }
5083 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5084 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5085 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5086 * TRAILERS state.
5087 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5088 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5089
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5090 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5091 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5092 else if (ret < 0) {
5093 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5094 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5095 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]5096 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5097 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5098 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5099 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5100 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5101 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5102 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5103
5104 if (ret == 0)
5105 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5106 else if (ret < 0) {
5107 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5108 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5109 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]5110 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5111 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5112 /* we're in MSG_CHUNK_SIZE now */
5113 }
5114 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5115 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5116
5117 if (ret == 0)
5118 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5119 else if (ret < 0) {
5120 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5121 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5122 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]5123 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5124 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5125 /* we're in HTTP_MSG_DONE now */
5126 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5127 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5128 int old_state = msg->msg_state;
5129
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5130 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5131 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5132 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5133 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5134 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5135 if (http_resync_states(s)) {
5136 /* some state changes occurred, maybe the analyser
5137 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5138 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5139 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5140 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5141 /* request errors are most likely due to
5142 * the server aborting the transfer.
5143 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5144 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5145 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5146 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5147 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5148 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5149 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5150 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5151 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5152
5153 /* If "option abortonclose" is set on the backend, we
5154 * want to monitor the client's connection and forward
5155 * any shutdown notification to the server, which will
5156 * decide whether to close or to go on processing the
5157 * request.
5158 */
5159 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5160 channel_auto_read(req);
5161 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5162 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5163 else if (s->txn.meth == HTTP_METH_POST) {
5164 /* POST requests may require to read extra CRLF
5165 * sent by broken browsers and which could cause
5166 * an RST to be sent upon close on some systems
5167 * (eg: Linux).
5168 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5169 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5170 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5171
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5172 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5173 }
5174 }
5175
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5176 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5177 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5178 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5179 if (!(s->flags & SN_ERR_MASK))
5180 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5181 if (!(s->flags & SN_FINST_MASK)) {
5182 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5183 s->flags |= SN_FINST_H;
5184 else
5185 s->flags |= SN_FINST_D;
5186 }
5187
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5188 s->fe->fe_counters.cli_aborts++;
5189 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5190 if (objt_server(s->target))
5191 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5192
5193 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5194 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5195
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5196 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5197 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5198 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5199
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5200 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5201 * 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]5202 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5203 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5204 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5205
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5206 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5207 * 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]5208 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5209 * modes are already handled by the stream sock layer. We must not do
5210 * this in content-length mode because it could present the MSG_MORE
5211 * flag with the last block of forwarded data, which would cause an
5212 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5213 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5214 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5215 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5216
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5217 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5218 return 0;
5219
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5220 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5221 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5222 if (s->listener->counters)
5223 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5224 return_bad_req_stats_ok:
5225 txn->req.msg_state = HTTP_MSG_ERROR;
5226 if (txn->status) {
5227 /* Note: we don't send any error if some data were already sent */
5228 stream_int_retnclose(req->prod, NULL);
5229 } else {
5230 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5231 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5232 }
5233 req->analysers = 0;
5234 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]5235
5236 if (!(s->flags & SN_ERR_MASK))
5237 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5238 if (!(s->flags & SN_FINST_MASK)) {
5239 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5240 s->flags |= SN_FINST_H;
5241 else
5242 s->flags |= SN_FINST_D;
5243 }
5244 return 0;
5245
5246 aborted_xfer:
5247 txn->req.msg_state = HTTP_MSG_ERROR;
5248 if (txn->status) {
5249 /* Note: we don't send any error if some data were already sent */
5250 stream_int_retnclose(req->prod, NULL);
5251 } else {
5252 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5253 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5254 }
5255 req->analysers = 0;
5256 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5257
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5258 s->fe->fe_counters.srv_aborts++;
5259 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5260 if (objt_server(s->target))
5261 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5262
5263 if (!(s->flags & SN_ERR_MASK))
5264 s->flags |= SN_ERR_SRVCL;
5265 if (!(s->flags & SN_FINST_MASK)) {
5266 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5267 s->flags |= SN_FINST_H;
5268 else
5269 s->flags |= SN_FINST_D;
5270 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5271 return 0;
5272}
5273
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5274/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5275 * processing can continue on next analysers, or zero if it either needs more
5276 * data or wants to immediately abort the response (eg: timeout, error, ...). It
5277 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
5278 * when it has nothing left to do, and may remove any analyser when it wants to
5279 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5280 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5281int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5282{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5283 struct http_txn *txn = &s->txn;
5284 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5285 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5286 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5287 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5288 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5289
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5290 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]5291 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5292 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5293 rep,
5294 rep->rex, rep->wex,
5295 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5296 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5297 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5298
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5299 /*
5300 * Now parse the partial (or complete) lines.
5301 * We will check the response syntax, and also join multi-line
5302 * headers. An index of all the lines will be elaborated while
5303 * parsing.
5304 *
5305 * For the parsing, we use a 28 states FSM.
5306 *
5307 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5308 * rep->buf->p = beginning of response
5309 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5310 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5311 * msg->eol = end of current header or line (LF or CRLF)
5312 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5313 */
5314
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5315 /* There's a protected area at the end of the buffer for rewriting
5316 * purposes. We don't want to start to parse the request if the
5317 * protected area is affected, because we may have to move processed
5318 * data later, which is much more complicated.
5319 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5320 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5321 if (unlikely(!channel_reserved(rep))) {
5322 /* some data has still not left the buffer, wake us once that's done */
5323 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5324 goto abort_response;
5325 channel_dont_close(rep);
5326 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5327 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5328 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5329 }
5330
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5331 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5332 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5333 buffer_slow_realign(rep->buf);
5334
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5335 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5336 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5337 }
5338
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5339 /* 1: we might have to print this header in debug mode */
5340 if (unlikely((global.mode & MODE_DEBUG) &&
5341 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5342 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5343 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5344
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5345 sol = rep->buf->p;
5346 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5347 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5348
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5349 sol += hdr_idx_first_pos(&txn->hdr_idx);
5350 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5351
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5352 while (cur_idx) {
5353 eol = sol + txn->hdr_idx.v[cur_idx].len;
5354 debug_hdr("srvhdr", s, sol, eol);
5355 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5356 cur_idx = txn->hdr_idx.v[cur_idx].next;
5357 }
5358 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5359
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5360 /*
5361 * Now we quickly check if we have found a full valid response.
5362 * If not so, we check the FD and buffer states before leaving.
5363 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5364 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5365 * responses are checked first.
5366 *
5367 * Depending on whether the client is still there or not, we
5368 * may send an error response back or not. Note that normally
5369 * we should only check for HTTP status there, and check I/O
5370 * errors somewhere else.
5371 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5372
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5373 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5374 /* Invalid response */
5375 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5376 /* we detected a parsing error. We want to archive this response
5377 * in the dedicated proxy area for later troubleshooting.
5378 */
5379 hdr_response_bad:
5380 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5381 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]5382
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5383 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5384 if (objt_server(s->target)) {
5385 objt_server(s->target)->counters.failed_resp++;
5386 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5387 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5388 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5389 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5390 rep->analysers = 0;
5391 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5392 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5393 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5394 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5395
5396 if (!(s->flags & SN_ERR_MASK))
5397 s->flags |= SN_ERR_PRXCOND;
5398 if (!(s->flags & SN_FINST_MASK))
5399 s->flags |= SN_FINST_H;
5400
5401 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5402 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5403
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5404 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5405 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5406 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5407 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5408 goto hdr_response_bad;
5409 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5410
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5411 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5412 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5413 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5414 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]5415 else if (txn->flags & TX_NOT_FIRST)
5416 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5417
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5418 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5419 if (objt_server(s->target)) {
5420 objt_server(s->target)->counters.failed_resp++;
5421 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5422 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5423
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5424 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5425 rep->analysers = 0;
5426 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5427 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5428 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5429 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5430
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5431 if (!(s->flags & SN_ERR_MASK))
5432 s->flags |= SN_ERR_SRVCL;
5433 if (!(s->flags & SN_FINST_MASK))
5434 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5435 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5436 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5437
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5438 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5439 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5440 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5441 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]5442 else if (txn->flags & TX_NOT_FIRST)
5443 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5444
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5445 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5446 if (objt_server(s->target)) {
5447 objt_server(s->target)->counters.failed_resp++;
5448 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5449 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5450
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5451 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5452 rep->analysers = 0;
5453 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5454 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5455 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5456 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5457
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5458 if (!(s->flags & SN_ERR_MASK))
5459 s->flags |= SN_ERR_SRVTO;
5460 if (!(s->flags & SN_FINST_MASK))
5461 s->flags |= SN_FINST_H;
5462 return 0;
5463 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5464
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5465 /* client abort with an abortonclose */
5466 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5467 s->fe->fe_counters.cli_aborts++;
5468 s->be->be_counters.cli_aborts++;
5469 if (objt_server(s->target))
5470 objt_server(s->target)->counters.cli_aborts++;
5471
5472 rep->analysers = 0;
5473 channel_auto_close(rep);
5474
5475 txn->status = 400;
5476 bi_erase(rep);
5477 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5478
5479 if (!(s->flags & SN_ERR_MASK))
5480 s->flags |= SN_ERR_CLICL;
5481 if (!(s->flags & SN_FINST_MASK))
5482 s->flags |= SN_FINST_H;
5483
5484 /* process_session() will take care of the error */
5485 return 0;
5486 }
5487
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5488 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5489 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5490 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5491 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]5492 else if (txn->flags & TX_NOT_FIRST)
5493 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5494
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5495 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5496 if (objt_server(s->target)) {
5497 objt_server(s->target)->counters.failed_resp++;
5498 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5499 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5500
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5501 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5502 rep->analysers = 0;
5503 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5504 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5505 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5506 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5507
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5508 if (!(s->flags & SN_ERR_MASK))
5509 s->flags |= SN_ERR_SRVCL;
5510 if (!(s->flags & SN_FINST_MASK))
5511 s->flags |= SN_FINST_H;
5512 return 0;
5513 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5514
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5515 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5516 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5517 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5518 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]5519 else if (txn->flags & TX_NOT_FIRST)
5520 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5521
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5522 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5523 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5524 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5525
5526 if (!(s->flags & SN_ERR_MASK))
5527 s->flags |= SN_ERR_CLICL;
5528 if (!(s->flags & SN_FINST_MASK))
5529 s->flags |= SN_FINST_H;
5530
5531 /* process_session() will take care of the error */
5532 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5533 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5534
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5535 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5536 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5537 return 0;
5538 }
5539
5540 /* More interesting part now : we know that we have a complete
5541 * response which at least looks like HTTP. We have an indicator
5542 * of each header's length, so we can parse them quickly.
5543 */
5544
5545 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5546 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]5547
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5548 /*
5549 * 1: get the status code
5550 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5551 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5552 if (n < 1 || n > 5)
5553 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5554 /* when the client triggers a 4xx from the server, it's most often due
5555 * to a missing object or permission. These events should be tracked
5556 * because if they happen often, it may indicate a brute force or a
5557 * vulnerability scan.
5558 */
5559 if (n == 4)
5560 session_inc_http_err_ctr(s);
5561
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5562 if (objt_server(s->target))
5563 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5564
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5565 /* check if the response is HTTP/1.1 or above */
5566 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5567 ((rep->buf->p[5] > '1') ||
5568 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5569 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5570
5571 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5572 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]5573
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5574 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5575 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5576
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5577 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]5578
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5579 /* Adjust server's health based on status code. Note: status codes 501
5580 * and 505 are triggered on demand by client request, so we must not
5581 * count them as server failures.
5582 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5583 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5584 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5585 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5586 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5587 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5588 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5589
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5590 /*
5591 * 2: check for cacheability.
5592 */
5593
5594 switch (txn->status) {
5595 case 200:
5596 case 203:
5597 case 206:
5598 case 300:
5599 case 301:
5600 case 410:
5601 /* RFC2616 @13.4:
5602 * "A response received with a status code of
5603 * 200, 203, 206, 300, 301 or 410 MAY be stored
5604 * by a cache (...) unless a cache-control
5605 * directive prohibits caching."
5606 *
5607 * RFC2616 @9.5: POST method :
5608 * "Responses to this method are not cacheable,
5609 * unless the response includes appropriate
5610 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5611 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5612 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5613 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5614 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5615 break;
5616 default:
5617 break;
5618 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5619
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5620 /*
5621 * 3: we may need to capture headers
5622 */
5623 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5624 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5625 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5626 txn->rsp.cap, s->fe->rsp_cap);
5627
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5628 /* 4: determine the transfer-length.
5629 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5630 * the presence of a message-body in a RESPONSE and its transfer length
5631 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5632 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5633 * All responses to the HEAD request method MUST NOT include a
5634 * message-body, even though the presence of entity-header fields
5635 * might lead one to believe they do. All 1xx (informational), 204
5636 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5637 * message-body. All other responses do include a message-body,
5638 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5639 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5640 * 1. Any response which "MUST NOT" include a message-body (such as the
5641 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5642 * always terminated by the first empty line after the header fields,
5643 * regardless of the entity-header fields present in the message.
5644 *
5645 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5646 * the "chunked" transfer-coding (Section 6.2) is used, the
5647 * transfer-length is defined by the use of this transfer-coding.
5648 * If a Transfer-Encoding header field is present and the "chunked"
5649 * transfer-coding is not present, the transfer-length is defined by
5650 * the sender closing the connection.
5651 *
5652 * 3. If a Content-Length header field is present, its decimal value in
5653 * OCTETs represents both the entity-length and the transfer-length.
5654 * If a message is received with both a Transfer-Encoding header
5655 * field and a Content-Length header field, the latter MUST be ignored.
5656 *
5657 * 4. If the message uses the media type "multipart/byteranges", and
5658 * the transfer-length is not otherwise specified, then this self-
5659 * delimiting media type defines the transfer-length. This media
5660 * type MUST NOT be used unless the sender knows that the recipient
5661 * can parse it; the presence in a request of a Range header with
5662 * multiple byte-range specifiers from a 1.1 client implies that the
5663 * client can parse multipart/byteranges responses.
5664 *
5665 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5666 */
5667
5668 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5669 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5670 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5671 * FIXME: should we parse anyway and return an error on chunked encoding ?
5672 */
5673 if (txn->meth == HTTP_METH_HEAD ||
5674 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5675 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5676 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5677 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5678 goto skip_content_length;
5679 }
5680
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5681 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5682 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5683 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5684 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5685 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5686 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5687 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5688 /* bad transfer-encoding (chunked followed by something else) */
5689 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5690 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5691 break;
5692 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5693 }
5694
5695 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5696 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5697 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5698 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5699 signed long long cl;
5700
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5701 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5702 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5703 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5704 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5705
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5706 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5707 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5708 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5709 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5710
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5711 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5712 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5713 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5714 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5715
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5716 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5717 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5718 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5719 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5720
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5721 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5722 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5723 }
5724
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5725 if (s->fe->comp || s->be->comp)
5726 select_compression_response_header(s, rep->buf);
5727
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5728 /* FIXME: we should also implement the multipart/byterange method.
5729 * For now on, we resort to close mode in this case (unknown length).
5730 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5731skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5732
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5733 /* end of job, return OK */
5734 rep->analysers &= ~an_bit;
5735 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5736 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5737 return 1;
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5738
5739 abort_keep_alive:
5740 /* A keep-alive request to the server failed on a network error.
5741 * The client is required to retry. We need to close without returning
5742 * any other information so that the client retries.
5743 */
5744 txn->status = 0;
5745 rep->analysers = 0;
5746 s->req->analysers = 0;
5747 channel_auto_close(rep);
5748 s->logs.logwait = 0;
5749 s->logs.level = 0;
5750 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
5751 bi_erase(rep);
5752 stream_int_retnclose(rep->cons, NULL);
5753 return 0;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5754}
5755
5756/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5757 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5758 * and updates t->rep->analysers. It might make sense to explode it into several
5759 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5760 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5761int 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]5762{
5763 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5764 struct http_msg *msg = &txn->rsp;
5765 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5766 struct cond_wordlist *wl;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5767 struct http_res_rule *http_res_last_rule = NULL;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5768
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5769 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]5770 now_ms, __FUNCTION__,
5771 t,
5772 rep,
5773 rep->rex, rep->wex,
5774 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5775 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5776 rep->analysers);
5777
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5778 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5779 return 0;
5780
5781 rep->analysers &= ~an_bit;
5782 rep->analyse_exp = TICK_ETERNITY;
5783
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5784 /* Now we have to check if we need to modify the Connection header.
5785 * This is more difficult on the response than it is on the request,
5786 * because we can have two different HTTP versions and we don't know
5787 * how the client will interprete a response. For instance, let's say
5788 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5789 * HTTP/1.1 response without any header. Maybe it will bound itself to
5790 * HTTP/1.0 because it only knows about it, and will consider the lack
5791 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5792 * the lack of header as a keep-alive. Thus we will use two flags
5793 * indicating how a request MAY be understood by the client. In case
5794 * of multiple possibilities, we'll fix the header to be explicit. If
5795 * ambiguous cases such as both close and keepalive are seen, then we
5796 * will fall back to explicit close. Note that we won't take risks with
5797 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5798 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5799 */
5800
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5801 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5802 txn->status == 101)) {
5803 /* Either we've established an explicit tunnel, or we're
5804 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5805 * to understand the next protocols. We have to switch to tunnel
5806 * mode, so that we transfer the request and responses then let
5807 * this protocol pass unmodified. When we later implement specific
5808 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5809 * header which contains information about that protocol for
5810 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5811 */
5812 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5813 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5814 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5815 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]5816 ((t->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
5817 (t->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5818 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5819
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]5820 /* this situation happens when combining pretend-keepalive with httpclose. */
5821 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
5822 ((t->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
5823 (t->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
5824 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
5825
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5826 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5827 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5828 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5829 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5830
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5831 /* now adjust header transformations depending on current state */
5832 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5833 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5834 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5835 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5836 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5837 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5838 else { /* SCL / KAL */
5839 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5840 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5841 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5842 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5843
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5844 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5845 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5846
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5847 /* Some keep-alive responses are converted to Server-close if
5848 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5849 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5850 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5851 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5852 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5853 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5854 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5855 }
5856
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5857 /* we want to have the response time before we start processing it */
5858 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
5859
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5860 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5861 /*
5862 * 3: we will have to evaluate the filters.
5863 * As opposed to version 1.2, now they will be evaluated in the
5864 * filters order and not in the header order. This means that
5865 * each filter has to be validated among all headers.
5866 *
5867 * Filters are tried with ->be first, then with ->fe if it is
5868 * different from ->be.
5869 */
5870
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5871 cur_proxy = t->be;
5872 while (1) {
5873 struct proxy *rule_set = cur_proxy;
5874
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5875 /* evaluate http-response rules */
5876 if (!http_res_last_rule)
5877 http_res_last_rule = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, t, txn);
5878
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5879 /* try headers filters */
5880 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5881 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5882 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5883 if (objt_server(t->target)) {
5884 objt_server(t->target)->counters.failed_resp++;
5885 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5886 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5887 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5888 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5889 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5890 txn->status = 502;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5891 t->logs.t_data = -1; /* was not a valid response */
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5892 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5893 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5894 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5895 if (!(t->flags & SN_ERR_MASK))
5896 t->flags |= SN_ERR_PRXCOND;
5897 if (!(t->flags & SN_FINST_MASK))
5898 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5899 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5900 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5901 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5902
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5903 /* has the response been denied ? */
5904 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5905 if (objt_server(t->target))
5906 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5907
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5908 t->be->be_counters.denied_resp++;
5909 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5910 if (t->listener->counters)
5911 t->listener->counters->denied_resp++;
5912
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5913 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5914 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5915
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5916 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5917 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5918 if (txn->status < 200)
5919 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5920 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5921 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]5922 ret = acl_pass(ret);
5923 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5924 ret = !ret;
5925 if (!ret)
5926 continue;
5927 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5928 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5929 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5930 }
5931
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5932 /* check whether we're already working on the frontend */
5933 if (cur_proxy == t->fe)
5934 break;
5935 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5936 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5937
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5938 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5939 * We may be facing a 100-continue response, in which case this
5940 * is not the right response, and we're waiting for the next one.
5941 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5942 * next one.
5943 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5944 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5945 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5946 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5947 msg->msg_state = HTTP_MSG_RPBEFORE;
5948 txn->status = 0;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5949 t->logs.t_data = -1; /* was not a response yet */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5950 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5951 return 1;
5952 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5953 else if (unlikely(txn->status < 200))
5954 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5955
5956 /* we don't have any 1xx status code now */
5957
5958 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5959 * 4: check for server cookie.
5960 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5961 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5962 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5963 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5964
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5965
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5966 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5967 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5968 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5969 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]5970 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5971
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5972 /*
5973 * 6: add server cookie in the response if needed
5974 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5975 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5976 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5977 (!(t->flags & SN_DIRECT) ||
5978 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5979 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5980 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5981 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5982 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5983 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5984 /* the server is known, it's not the one the client requested, or the
5985 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5986 * insert a set-cookie here, except if we want to insert only on POST
5987 * requests and this one isn't. Note that servers which don't have cookies
5988 * (eg: some backup servers) will return a full cookie removal request.
5989 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5990 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5991 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5992 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5993 t->be->cookie_name);
5994 }
5995 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5996 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]5997
5998 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5999 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6000 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6001 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6002 trash.len += 5;
6003
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6004 if (t->be->cookie_maxlife) {
6005 /* emit first_date, which is either the original one or
6006 * the current date.
6007 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6008 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6009 s30tob64(txn->cookie_first_date ?
6010 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6011 (date.tv_sec+3) >> 2, trash.str + trash.len);
6012 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6013 }
6014 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6015 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6016 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6017
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6018 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6019 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6020
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6021 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6022 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6023
6024 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6025 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6026
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6027 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]6028 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6029
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6030 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6031 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6032 /* the server did not change, only the date was updated */
6033 txn->flags |= TX_SCK_UPDATED;
6034 else
6035 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6036
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6037 /* Here, we will tell an eventual cache on the client side that we don't
6038 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6039 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6040 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
6041 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6042 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6043
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6044 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
6045
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6046 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]6047 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6048 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6049 }
6050 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6051
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6052 /*
6053 * 7: check if result will be cacheable with a cookie.
6054 * We'll block the response if security checks have caught
6055 * nasty things such as a cacheable cookie.
6056 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]6057 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6058 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6059 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6060
6061 /* we're in presence of a cacheable response containing
6062 * a set-cookie header. We'll block it as requested by
6063 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6064 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6065 if (objt_server(t->target))
6066 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6067
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6068 t->be->be_counters.denied_resp++;
6069 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6070 if (t->listener->counters)
6071 t->listener->counters->denied_resp++;
6072
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6073 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6074 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6075 send_log(t->be, LOG_ALERT,
6076 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6077 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6078 goto return_srv_prx_502;
6079 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6080
6081 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6082 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6083 * If an "Upgrade" token is found, the header is left untouched in order
6084 * not to have to deal with some client bugs : some of them fail an upgrade
6085 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6086 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]6087 if (!(txn->flags & TX_HDR_CONN_UPG) &&
6088 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]6089 ((t->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6090 (t->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6091 unsigned int want_flags = 0;
6092
6093 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6094 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6095 /* we want a keep-alive response here. Keep-alive header
6096 * required if either side is not 1.1.
6097 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6098 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6099 want_flags |= TX_CON_KAL_SET;
6100 }
6101 else {
6102 /* we want a close response here. Close header required if
6103 * the server is 1.1, regardless of the client.
6104 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6105 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6106 want_flags |= TX_CON_CLO_SET;
6107 }
6108
6109 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6110 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6111 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6112
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6113 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6114 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6115 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6116 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6117
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6118 /*************************************************************
6119 * OK, that's finished for the headers. We have done what we *
6120 * could. Let's switch to the DATA state. *
6121 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6122
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6123 /* if the user wants to log as soon as possible, without counting
6124 * bytes from the server, then this is the right moment. We have
6125 * to temporarily assign bytes_out to log what we currently have.
6126 */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]6127 if (!LIST_ISEMPTY(&t->fe->logformat) && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6128 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
6129 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]6130 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6131 t->logs.bytes_out = 0;
6132 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6133
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6134 /* Note: we must not try to cheat by jumping directly to DATA,
6135 * otherwise we would not let the client side wake up.
6136 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6137
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6138 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6139 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6140 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6141}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6142
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6143/* This function is an analyser which forwards response body (including chunk
6144 * sizes if any). It is called as soon as we must forward, even if we forward
6145 * zero byte. The only situation where it must not be called is when we're in
6146 * tunnel mode and we want to forward till the close. It's used both to forward
6147 * remaining data and to resync after end of body. It expects the msg_state to
6148 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
6149 * 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]6150 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6151 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6152 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6153int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6154{
6155 struct http_txn *txn = &s->txn;
6156 struct http_msg *msg = &s->txn.rsp;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6157 static struct buffer *tmpbuf = NULL;
6158 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6159 int consumed_data = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6160 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6161
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6162 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6163 return 0;
6164
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6165 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]6166 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]6167 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6168 /* Output closed while we were sending data. We must abort and
6169 * wake the other side up.
6170 */
6171 msg->msg_state = HTTP_MSG_ERROR;
6172 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6173 return 1;
6174 }
6175
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6176 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6177 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6178
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6179 /* this is the first time we need the compression buffer */
6180 if (s->comp_algo != NULL && tmpbuf == NULL) {
6181 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
6182 goto aborted_xfer; /* no memory */
6183 }
6184
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6185 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]6186 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]6187 * res->buf.p still points to the beginning of the message. We
6188 * forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6189 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6190 channel_forward(res, msg->sov);
6191 msg->next = 0;
Willy Tarreau1234f4a2014-04-17 21:14:47 +0200[diff] [blame^]6192 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6193
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6194 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6195 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6196 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6197 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6198 }
6199
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6200 if (s->comp_algo != NULL) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6201 ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6202 if (ret < 0) {
6203 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6204 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6205 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6206 compressing = 1;
6207 }
6208
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6209 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6210 http_silent_debug(__LINE__, s);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]6211
6212 /* we may have some pending data starting at res->buf->p */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6213 if (s->comp_algo == NULL) {
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6214 if (msg->chunk_len || msg->next) {
6215 msg->chunk_len += msg->next;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6216 msg->chunk_len -= channel_forward(res, msg->chunk_len);
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6217 msg->next = 0;
Willy Tarreau1234f4a2014-04-17 21:14:47 +0200[diff] [blame^]6218 msg->sov = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6219 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]6220 }
6221
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6222 switch (msg->msg_state - HTTP_MSG_DATA) {
6223 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6224 if (compressing) {
6225 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
6226 if (ret < 0)
6227 goto aborted_xfer;
6228 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6229
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6230 if (res->to_forward || msg->chunk_len) {
6231 res->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6232 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6233 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6234
6235 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6236 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6237 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6238 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6239 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6240 if (compressing && consumed_data) {
6241 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6242 compressing = 0;
6243 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6244 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6245 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6246 /* fall through for HTTP_MSG_CHUNK_CRLF */
6247
6248 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6249 /* we want the CRLF after the data */
6250
6251 ret = http_skip_chunk_crlf(msg);
6252 if (ret == 0)
6253 goto missing_data;
6254 else if (ret < 0) {
6255 if (msg->err_pos >= 0)
6256 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
6257 goto return_bad_res;
6258 }
6259 /* skipping data in buffer for compression */
6260 if (compressing) {
6261 b_adv(res->buf, msg->next);
6262 msg->next = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6263 }
6264 /* we're in MSG_CHUNK_SIZE now, fall through */
6265
6266 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6267 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6268 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6269 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6270 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6271
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6272 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6273 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6274 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6275 else if (ret < 0) {
6276 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6277 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]6278 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6279 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6280 if (compressing) {
6281 if (likely(msg->chunk_len > 0)) {
6282 /* skipping data if we are in compression mode */
6283 b_adv(res->buf, msg->next);
6284 msg->next = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6285 } else {
6286 if (consumed_data) {
6287 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6288 compressing = 0;
6289 }
6290 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6291 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6292 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6293 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6294
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6295 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
6296 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6297 if (ret == 0)
6298 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6299 else if (ret < 0) {
6300 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6301 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]6302 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6303 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]6304 if (s->comp_algo != NULL) {
6305 /* forwarding trailers */
6306 channel_forward(res, msg->next);
6307 msg->next = 0;
Willy Tarreau1234f4a2014-04-17 21:14:47 +0200[diff] [blame^]6308 msg->sov = 0;
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]6309 }
Willy Tarreau2d43e182013-04-03 00:22:25 +0200[diff] [blame]6310 /* we're in HTTP_MSG_DONE now, but we might still have
6311 * some data pending, so let's loop over once.
6312 */
6313 break;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6314
6315 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6316 /* other states, DONE...TUNNEL */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6317
6318 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6319 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6320 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6321 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6322 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6323 if (http_resync_states(s)) {
6324 http_silent_debug(__LINE__, s);
6325 /* some state changes occurred, maybe the analyser
6326 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6327 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6328 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6329 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6330 /* response errors are most likely due to
6331 * the client aborting the transfer.
6332 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6333 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6334 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6335 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6336 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6337 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6338 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6339 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6340 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6341 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6342 }
6343 }
6344
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6345 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6346 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6347 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
6348 compressing = 0;
6349 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6350
6351 if (res->flags & CF_SHUTW)
6352 goto aborted_xfer;
6353
6354 /* stop waiting for data if the input is closed before the end. If the
6355 * client side was already closed, it means that the client has aborted,
6356 * so we don't want to count this as a server abort. Otherwise it's a
6357 * server abort.
6358 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6359 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6360 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
6361 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6362 if (!(s->flags & SN_ERR_MASK))
6363 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6364 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6365 if (objt_server(s->target))
6366 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6367 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6368 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6369
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6370 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6371 if (!s->req->analysers)
6372 goto return_bad_res;
6373
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]6374 /* forward any pending data starting at res->buf->p */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6375 if (s->comp_algo == NULL) {
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6376 if (msg->chunk_len || msg->next) {
6377 msg->chunk_len += msg->next;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6378 msg->chunk_len -= channel_forward(res, msg->chunk_len);
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6379 msg->next = 0;
Willy Tarreau1234f4a2014-04-17 21:14:47 +0200[diff] [blame^]6380 msg->sov = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6381 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6382 }
6383
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6384 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6385 * 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]6386 * Similarly, with keep-alive on the client side, we don't want to forward a
6387 * close.
6388 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6389 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6390 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6391 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6392 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6393
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6394 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6395 * 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]6396 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6397 * modes are already handled by the stream sock layer. We must not do
6398 * this in content-length mode because it could present the MSG_MORE
6399 * flag with the last block of forwarded data, which would cause an
6400 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6401 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6402 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6403 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6404
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6405 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6406 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6407 return 0;
6408
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6409 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6410 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6411 if (objt_server(s->target))
6412 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6413
6414 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6415 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6416 /* don't send any error message as we're in the body */
6417 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6418 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6419 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]6420 if (objt_server(s->target))
6421 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6422
6423 if (!(s->flags & SN_ERR_MASK))
6424 s->flags |= SN_ERR_PRXCOND;
6425 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6426 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6427 return 0;
6428
6429 aborted_xfer:
6430 txn->rsp.msg_state = HTTP_MSG_ERROR;
6431 /* don't send any error message as we're in the body */
6432 stream_int_retnclose(res->cons, NULL);
6433 res->analysers = 0;
6434 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6435
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6436 s->fe->fe_counters.cli_aborts++;
6437 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6438 if (objt_server(s->target))
6439 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6440
6441 if (!(s->flags & SN_ERR_MASK))
6442 s->flags |= SN_ERR_CLICL;
6443 if (!(s->flags & SN_FINST_MASK))
6444 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6445 return 0;
6446}
6447
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6448/* Iterate the same filter through all request headers.
6449 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6450 * Since it can manage the switch to another backend, it updates the per-proxy
6451 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6452 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6453int 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]6454{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6455 char term;
6456 char *cur_ptr, *cur_end, *cur_next;
6457 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6458 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6459 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6460 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6461
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6462 last_hdr = 0;
6463
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6464 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6465 old_idx = 0;
6466
6467 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6468 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6469 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6470 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6471 (exp->action == ACT_ALLOW ||
6472 exp->action == ACT_DENY ||
6473 exp->action == ACT_TARPIT))
6474 return 0;
6475
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6476 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6477 if (!cur_idx)
6478 break;
6479
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6480 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6481 cur_ptr = cur_next;
6482 cur_end = cur_ptr + cur_hdr->len;
6483 cur_next = cur_end + cur_hdr->cr + 1;
6484
6485 /* Now we have one header between cur_ptr and cur_end,
6486 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6487 */
6488
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6489 /* The annoying part is that pattern matching needs
6490 * that we modify the contents to null-terminate all
6491 * strings before testing them.
6492 */
6493
6494 term = *cur_end;
6495 *cur_end = '\0';
6496
6497 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6498 switch (exp->action) {
6499 case ACT_SETBE:
6500 /* It is not possible to jump a second time.
6501 * FIXME: should we return an HTTP/500 here so that
6502 * the admin knows there's a problem ?
6503 */
6504 if (t->be != t->fe)
6505 break;
6506
6507 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6508 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6509 last_hdr = 1;
6510 break;
6511
6512 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6513 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6514 last_hdr = 1;
6515 break;
6516
6517 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6518 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6519 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6520 break;
6521
6522 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6523 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6524 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6525 break;
6526
6527 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6528 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6529 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6530 /* FIXME: if the user adds a newline in the replacement, the
6531 * index will not be recalculated for now, and the new line
6532 * will not be counted as a new header.
6533 */
6534
6535 cur_end += delta;
6536 cur_next += delta;
6537 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6538 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6539 break;
6540
6541 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6542 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6543 cur_next += delta;
6544
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6545 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6546 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6547 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6548 cur_hdr->len = 0;
6549 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6550 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6551 break;
6552
6553 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6554 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6555 if (cur_end)
6556 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6557
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6558 /* keep the link from this header to next one in case of later
6559 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6560 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6561 old_idx = cur_idx;
6562 }
6563 return 0;
6564}
6565
6566
6567/* Apply the filter to the request line.
6568 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6569 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6570 * Since it can manage the switch to another backend, it updates the per-proxy
6571 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6572 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6573int 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]6574{
6575 char term;
6576 char *cur_ptr, *cur_end;
6577 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6578 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6579 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6580
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6581 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6582 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6583 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6584 (exp->action == ACT_ALLOW ||
6585 exp->action == ACT_DENY ||
6586 exp->action == ACT_TARPIT))
6587 return 0;
6588 else if (exp->action == ACT_REMOVE)
6589 return 0;
6590
6591 done = 0;
6592
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6593 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6594 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6595
6596 /* Now we have the request line between cur_ptr and cur_end */
6597
6598 /* The annoying part is that pattern matching needs
6599 * that we modify the contents to null-terminate all
6600 * strings before testing them.
6601 */
6602
6603 term = *cur_end;
6604 *cur_end = '\0';
6605
6606 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6607 switch (exp->action) {
6608 case ACT_SETBE:
6609 /* It is not possible to jump a second time.
6610 * FIXME: should we return an HTTP/500 here so that
6611 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6612 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6613 if (t->be != t->fe)
6614 break;
6615
6616 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6617 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6618 done = 1;
6619 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6620
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6621 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6622 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6623 done = 1;
6624 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6625
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6626 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6627 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6628 done = 1;
6629 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6630
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6631 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6632 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6633 done = 1;
6634 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6635
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6636 case ACT_REPLACE:
6637 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6638 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6639 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6640 /* FIXME: if the user adds a newline in the replacement, the
6641 * index will not be recalculated for now, and the new line
6642 * will not be counted as a new header.
6643 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6644
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6645 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6646 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6647 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6648 HTTP_MSG_RQMETH,
6649 cur_ptr, cur_end + 1,
6650 NULL, NULL);
6651 if (unlikely(!cur_end))
6652 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6653
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6654 /* we have a full request and we know that we have either a CR
6655 * or an LF at <ptr>.
6656 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6657 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6658 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]6659 /* there is no point trying this regex on headers */
6660 return 1;
6661 }
6662 }
6663 *cur_end = term; /* restore the string terminator */
6664 return done;
6665}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6666
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6667
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6668
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6669/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6670 * 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]6671 * 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]6672 * unparsable request. Since it can manage the switch to another backend, it
6673 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6674 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6675int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6676{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6677 struct http_txn *txn = &s->txn;
6678 struct hdr_exp *exp;
6679
6680 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6681 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6682
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6683 /*
6684 * The interleaving of transformations and verdicts
6685 * makes it difficult to decide to continue or stop
6686 * the evaluation.
6687 */
6688
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6689 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6690 break;
6691
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6692 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6693 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6694 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6695 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6696
6697 /* if this filter had a condition, evaluate it now and skip to
6698 * next filter if the condition does not match.
6699 */
6700 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6701 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]6702 ret = acl_pass(ret);
6703 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6704 ret = !ret;
6705
6706 if (!ret)
6707 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6708 }
6709
6710 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6711 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6712 if (unlikely(ret < 0))
6713 return -1;
6714
6715 if (likely(ret == 0)) {
6716 /* The filter did not match the request, it can be
6717 * iterated through all headers.
6718 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6719 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6720 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6721 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6722 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6723}
6724
6725
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6726
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6727/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6728 * Try to retrieve the server associated to the appsession.
6729 * If the server is found, it's assigned to the session.
6730 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6731void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6732 struct http_txn *txn = &t->txn;
6733 appsess *asession = NULL;
6734 char *sessid_temp = NULL;
6735
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6736 if (len > t->be->appsession_len) {
6737 len = t->be->appsession_len;
6738 }
6739
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6740 if (t->be->options2 & PR_O2_AS_REQL) {
6741 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6742 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6743 /* 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]6744 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6745 }
6746
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6747 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6748 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6749 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6750 return;
6751 }
6752
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6753 memcpy(txn->sessid, buf, len);
6754 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6755 }
6756
6757 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6758 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6759 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6760 return;
6761 }
6762
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6763 memcpy(sessid_temp, buf, len);
6764 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6765
6766 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6767 /* free previously allocated memory */
6768 pool_free2(apools.sessid, sessid_temp);
6769
6770 if (asession != NULL) {
6771 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6772 if (!(t->be->options2 & PR_O2_AS_REQL))
6773 asession->request_count++;
6774
6775 if (asession->serverid != NULL) {
6776 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6777
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6778 while (srv) {
6779 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6780 if ((srv->state & SRV_RUNNING) ||
6781 (t->be->options & PR_O_PERSIST) ||
6782 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6783 /* we found the server and it's usable */
6784 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6785 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6786 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6787 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6788
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6789 break;
6790 } else {
6791 txn->flags &= ~TX_CK_MASK;
6792 txn->flags |= TX_CK_DOWN;
6793 }
6794 }
6795 srv = srv->next;
6796 }
6797 }
6798 }
6799}
6800
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6801/* Find the end of a cookie value contained between <s> and <e>. It works the
6802 * same way as with headers above except that the semi-colon also ends a token.
6803 * See RFC2965 for more information. Note that it requires a valid header to
6804 * return a valid result.
6805 */
6806char *find_cookie_value_end(char *s, const char *e)
6807{
6808 int quoted, qdpair;
6809
6810 quoted = qdpair = 0;
6811 for (; s < e; s++) {
6812 if (qdpair) qdpair = 0;
6813 else if (quoted) {
6814 if (*s == '\\') qdpair = 1;
6815 else if (*s == '"') quoted = 0;
6816 }
6817 else if (*s == '"') quoted = 1;
6818 else if (*s == ',' || *s == ';') return s;
6819 }
6820 return s;
6821}
6822
6823/* Delete a value in a header between delimiters <from> and <next> in buffer
6824 * <buf>. The number of characters displaced is returned, and the pointer to
6825 * the first delimiter is updated if required. The function tries as much as
6826 * possible to respect the following principles :
6827 * - replace <from> delimiter by the <next> one unless <from> points to a
6828 * colon, in which case <next> is simply removed
6829 * - set exactly one space character after the new first delimiter, unless
6830 * there are not enough characters in the block being moved to do so.
6831 * - remove unneeded spaces before the previous delimiter and after the new
6832 * one.
6833 *
6834 * It is the caller's responsibility to ensure that :
6835 * - <from> points to a valid delimiter or the colon ;
6836 * - <next> points to a valid delimiter or the final CR/LF ;
6837 * - there are non-space chars before <from> ;
6838 * - there is a CR/LF at or after <next>.
6839 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6840int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6841{
6842 char *prev = *from;
6843
6844 if (*prev == ':') {
6845 /* We're removing the first value, preserve the colon and add a
6846 * space if possible.
6847 */
6848 if (!http_is_crlf[(unsigned char)*next])
6849 next++;
6850 prev++;
6851 if (prev < next)
6852 *prev++ = ' ';
6853
6854 while (http_is_spht[(unsigned char)*next])
6855 next++;
6856 } else {
6857 /* Remove useless spaces before the old delimiter. */
6858 while (http_is_spht[(unsigned char)*(prev-1)])
6859 prev--;
6860 *from = prev;
6861
6862 /* copy the delimiter and if possible a space if we're
6863 * not at the end of the line.
6864 */
6865 if (!http_is_crlf[(unsigned char)*next]) {
6866 *prev++ = *next++;
6867 if (prev + 1 < next)
6868 *prev++ = ' ';
6869 while (http_is_spht[(unsigned char)*next])
6870 next++;
6871 }
6872 }
6873 return buffer_replace2(buf, prev, next, NULL, 0);
6874}
6875
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6876/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6877 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6878 * desirable to call it only when needed. This code is quite complex because
6879 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6880 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6881 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6882void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6883{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6884 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6885 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6886 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6887 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6888 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6889
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6890 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6891 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6892 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6893
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6894 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6895 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6896 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6897
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6898 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6899 hdr_beg = hdr_next;
6900 hdr_end = hdr_beg + cur_hdr->len;
6901 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6902
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6903 /* We have one full header between hdr_beg and hdr_end, and the
6904 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6905 * "Cookie:" headers.
6906 */
6907
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6908 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6909 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6910 old_idx = cur_idx;
6911 continue;
6912 }
6913
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6914 del_from = NULL; /* nothing to be deleted */
6915 preserve_hdr = 0; /* assume we may kill the whole header */
6916
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6917 /* Now look for cookies. Conforming to RFC2109, we have to support
6918 * attributes whose name begin with a '$', and associate them with
6919 * the right cookie, if we want to delete this cookie.
6920 * So there are 3 cases for each cookie read :
6921 * 1) it's a special attribute, beginning with a '$' : ignore it.
6922 * 2) it's a server id cookie that we *MAY* want to delete : save
6923 * some pointers on it (last semi-colon, beginning of cookie...)
6924 * 3) it's an application cookie : we *MAY* have to delete a previous
6925 * "special" cookie.
6926 * At the end of loop, if a "special" cookie remains, we may have to
6927 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6928 * *MUST* delete it.
6929 *
6930 * Note: RFC2965 is unclear about the processing of spaces around
6931 * the equal sign in the ATTR=VALUE form. A careful inspection of
6932 * the RFC explicitly allows spaces before it, and not within the
6933 * tokens (attrs or values). An inspection of RFC2109 allows that
6934 * too but section 10.1.3 lets one think that spaces may be allowed
6935 * after the equal sign too, resulting in some (rare) buggy
6936 * implementations trying to do that. So let's do what servers do.
6937 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6938 * allowed quoted strings in values, with any possible character
6939 * after a backslash, including control chars and delimitors, which
6940 * causes parsing to become ambiguous. Browsers also allow spaces
6941 * within values even without quotes.
6942 *
6943 * We have to keep multiple pointers in order to support cookie
6944 * removal at the beginning, middle or end of header without
6945 * corrupting the header. All of these headers are valid :
6946 *
6947 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6948 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6949 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6950 * | | | | | | | | |
6951 * | | | | | | | | hdr_end <--+
6952 * | | | | | | | +--> next
6953 * | | | | | | +----> val_end
6954 * | | | | | +-----------> val_beg
6955 * | | | | +--------------> equal
6956 * | | | +----------------> att_end
6957 * | | +---------------------> att_beg
6958 * | +--------------------------> prev
6959 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6960 */
6961
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6962 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6963 /* Iterate through all cookies on this line */
6964
6965 /* find att_beg */
6966 att_beg = prev + 1;
6967 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6968 att_beg++;
6969
6970 /* find att_end : this is the first character after the last non
6971 * space before the equal. It may be equal to hdr_end.
6972 */
6973 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6974
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6975 while (equal < hdr_end) {
6976 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6977 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6978 if (http_is_spht[(unsigned char)*equal++])
6979 continue;
6980 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6981 }
6982
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6983 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6984 * is between <att_beg> and <equal>, both may be identical.
6985 */
6986
6987 /* look for end of cookie if there is an equal sign */
6988 if (equal < hdr_end && *equal == '=') {
6989 /* look for the beginning of the value */
6990 val_beg = equal + 1;
6991 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6992 val_beg++;
6993
6994 /* find the end of the value, respecting quotes */
6995 next = find_cookie_value_end(val_beg, hdr_end);
6996
6997 /* make val_end point to the first white space or delimitor after the value */
6998 val_end = next;
6999 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7000 val_end--;
7001 } else {
7002 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7003 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7004
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7005 /* We have nothing to do with attributes beginning with '$'. However,
7006 * they will automatically be removed if a header before them is removed,
7007 * since they're supposed to be linked together.
7008 */
7009 if (*att_beg == '$')
7010 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7011
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7012 /* Ignore cookies with no equal sign */
7013 if (equal == next) {
7014 /* This is not our cookie, so we must preserve it. But if we already
7015 * scheduled another cookie for removal, we cannot remove the
7016 * complete header, but we can remove the previous block itself.
7017 */
7018 preserve_hdr = 1;
7019 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7020 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7021 val_end += delta;
7022 next += delta;
7023 hdr_end += delta;
7024 hdr_next += delta;
7025 cur_hdr->len += delta;
7026 http_msg_move_end(&txn->req, delta);
7027 prev = del_from;
7028 del_from = NULL;
7029 }
7030 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7031 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7032
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7033 /* if there are spaces around the equal sign, we need to
7034 * strip them otherwise we'll get trouble for cookie captures,
7035 * or even for rewrites. Since this happens extremely rarely,
7036 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7037 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7038 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7039 int stripped_before = 0;
7040 int stripped_after = 0;
7041
7042 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7043 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7044 equal += stripped_before;
7045 val_beg += stripped_before;
7046 }
7047
7048 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7049 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7050 val_beg += stripped_after;
7051 stripped_before += stripped_after;
7052 }
7053
7054 val_end += stripped_before;
7055 next += stripped_before;
7056 hdr_end += stripped_before;
7057 hdr_next += stripped_before;
7058 cur_hdr->len += stripped_before;
7059 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7060 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7061 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7062
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7063 /* First, let's see if we want to capture this cookie. We check
7064 * that we don't already have a client side cookie, because we
7065 * can only capture one. Also as an optimisation, we ignore
7066 * cookies shorter than the declared name.
7067 */
7068 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7069 (val_end - att_beg >= t->fe->capture_namelen) &&
7070 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7071 int log_len = val_end - att_beg;
7072
7073 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7074 Alert("HTTP logging : out of memory.\n");
7075 } else {
7076 if (log_len > t->fe->capture_len)
7077 log_len = t->fe->capture_len;
7078 memcpy(txn->cli_cookie, att_beg, log_len);
7079 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7080 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7081 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7082
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7083 /* Persistence cookies in passive, rewrite or insert mode have the
7084 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7085 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7086 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7087 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7088 * For cookies in prefix mode, the form is :
7089 *
7090 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7091 */
7092 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7093 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
7094 struct server *srv = t->be->srv;
7095 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7096
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7097 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7098 * have the server ID between val_beg and delim, and the original cookie between
7099 * delim+1 and val_end. Otherwise, delim==val_end :
7100 *
7101 * Cookie: NAME=SRV; # in all but prefix modes
7102 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7103 * | || || | |+-> next
7104 * | || || | +--> val_end
7105 * | || || +---------> delim
7106 * | || |+------------> val_beg
7107 * | || +-------------> att_end = equal
7108 * | |+-----------------> att_beg
7109 * | +------------------> prev
7110 * +-------------------------> hdr_beg
7111 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7112
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7113 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7114 for (delim = val_beg; delim < val_end; delim++)
7115 if (*delim == COOKIE_DELIM)
7116 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7117 } else {
7118 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7119 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7120 /* Now check if the cookie contains a date field, which would
7121 * appear after a vertical bar ('|') just after the server name
7122 * and before the delimiter.
7123 */
7124 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7125 if (vbar1) {
7126 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7127 * right is the last seen date. It is a base64 encoded
7128 * 30-bit value representing the UNIX date since the
7129 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7130 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7131 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7132 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7133 if (val_end - vbar1 >= 5) {
7134 val = b64tos30(vbar1);
7135 if (val > 0)
7136 txn->cookie_last_date = val << 2;
7137 }
7138 /* look for a second vertical bar */
7139 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7140 if (vbar1 && (val_end - vbar1 > 5)) {
7141 val = b64tos30(vbar1 + 1);
7142 if (val > 0)
7143 txn->cookie_first_date = val << 2;
7144 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7145 }
7146 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7147
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7148 /* if the cookie has an expiration date and the proxy wants to check
7149 * it, then we do that now. We first check if the cookie is too old,
7150 * then only if it has expired. We detect strict overflow because the
7151 * time resolution here is not great (4 seconds). Cookies with dates
7152 * in the future are ignored if their offset is beyond one day. This
7153 * allows an admin to fix timezone issues without expiring everyone
7154 * and at the same time avoids keeping unwanted side effects for too
7155 * long.
7156 */
7157 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7158 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
7159 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7160 txn->flags &= ~TX_CK_MASK;
7161 txn->flags |= TX_CK_OLD;
7162 delim = val_beg; // let's pretend we have not found the cookie
7163 txn->cookie_first_date = 0;
7164 txn->cookie_last_date = 0;
7165 }
7166 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7167 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
7168 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7169 txn->flags &= ~TX_CK_MASK;
7170 txn->flags |= TX_CK_EXPIRED;
7171 delim = val_beg; // let's pretend we have not found the cookie
7172 txn->cookie_first_date = 0;
7173 txn->cookie_last_date = 0;
7174 }
7175
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7176 /* Here, we'll look for the first running server which supports the cookie.
7177 * This allows to share a same cookie between several servers, for example
7178 * to dedicate backup servers to specific servers only.
7179 * However, to prevent clients from sticking to cookie-less backup server
7180 * when they have incidentely learned an empty cookie, we simply ignore
7181 * empty cookies and mark them as invalid.
7182 * The same behaviour is applied when persistence must be ignored.
7183 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]7184 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7185 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7186
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7187 while (srv) {
7188 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7189 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
7190 if ((srv->state & SRV_RUNNING) ||
7191 (t->be->options & PR_O_PERSIST) ||
7192 (t->flags & SN_FORCE_PRST)) {
7193 /* we found the server and we can use it */
7194 txn->flags &= ~TX_CK_MASK;
7195 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
7196 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7197 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7198 break;
7199 } else {
7200 /* we found a server, but it's down,
7201 * mark it as such and go on in case
7202 * another one is available.
7203 */
7204 txn->flags &= ~TX_CK_MASK;
7205 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7206 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7207 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7208 srv = srv->next;
7209 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7210
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7211 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7212 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7213 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7214 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
7215 txn->flags |= TX_CK_UNUSED;
7216 else
7217 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7218 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7219
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7220 /* depending on the cookie mode, we may have to either :
7221 * - delete the complete cookie if we're in insert+indirect mode, so that
7222 * the server never sees it ;
7223 * - remove the server id from the cookie value, and tag the cookie as an
7224 * application cookie so that it does not get accidentely removed later,
7225 * if we're in cookie prefix mode
7226 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7227 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7228 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7229
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7230 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7231 val_end += delta;
7232 next += delta;
7233 hdr_end += delta;
7234 hdr_next += delta;
7235 cur_hdr->len += delta;
7236 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7237
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7238 del_from = NULL;
7239 preserve_hdr = 1; /* we want to keep this cookie */
7240 }
7241 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7242 (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]7243 del_from = prev;
7244 }
7245 } else {
7246 /* This is not our cookie, so we must preserve it. But if we already
7247 * scheduled another cookie for removal, we cannot remove the
7248 * complete header, but we can remove the previous block itself.
7249 */
7250 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7251
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7252 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7253 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7254 if (att_beg >= del_from)
7255 att_beg += delta;
7256 if (att_end >= del_from)
7257 att_end += delta;
7258 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7259 val_end += delta;
7260 next += delta;
7261 hdr_end += delta;
7262 hdr_next += delta;
7263 cur_hdr->len += delta;
7264 http_msg_move_end(&txn->req, delta);
7265 prev = del_from;
7266 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7267 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7268 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7269
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7270 /* Look for the appsession cookie unless persistence must be ignored */
7271 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
7272 int cmp_len, value_len;
7273 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7274
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7275 if (t->be->options2 & PR_O2_AS_PFX) {
7276 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7277 value_begin = att_beg + t->be->appsession_name_len;
7278 value_len = val_end - att_beg - t->be->appsession_name_len;
7279 } else {
7280 cmp_len = att_end - att_beg;
7281 value_begin = val_beg;
7282 value_len = val_end - val_beg;
7283 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7284
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7285 /* let's see if the cookie is our appcookie */
7286 if (cmp_len == t->be->appsession_name_len &&
7287 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
7288 manage_client_side_appsession(t, value_begin, value_len);
7289 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7290 }
7291
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7292 /* continue with next cookie on this header line */
7293 att_beg = next;
7294 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7295
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7296 /* There are no more cookies on this line.
7297 * We may still have one (or several) marked for deletion at the
7298 * end of the line. We must do this now in two ways :
7299 * - if some cookies must be preserved, we only delete from the
7300 * mark to the end of line ;
7301 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7302 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7303 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7304 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7305 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7306 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7307 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7308 cur_hdr->len += delta;
7309 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7310 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7311
7312 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7313 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7314 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7315 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7316 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7317 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7318 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7319 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7320 }
7321
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7322 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7323 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7324 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7325}
7326
7327
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7328/* Iterate the same filter through all response headers contained in <rtr>.
7329 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7330 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7331int 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]7332{
7333 char term;
7334 char *cur_ptr, *cur_end, *cur_next;
7335 int cur_idx, old_idx, last_hdr;
7336 struct http_txn *txn = &t->txn;
7337 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7338 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7339
7340 last_hdr = 0;
7341
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7342 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7343 old_idx = 0;
7344
7345 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7346 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7347 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7348 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7349 (exp->action == ACT_ALLOW ||
7350 exp->action == ACT_DENY))
7351 return 0;
7352
7353 cur_idx = txn->hdr_idx.v[old_idx].next;
7354 if (!cur_idx)
7355 break;
7356
7357 cur_hdr = &txn->hdr_idx.v[cur_idx];
7358 cur_ptr = cur_next;
7359 cur_end = cur_ptr + cur_hdr->len;
7360 cur_next = cur_end + cur_hdr->cr + 1;
7361
7362 /* Now we have one header between cur_ptr and cur_end,
7363 * and the next header starts at cur_next.
7364 */
7365
7366 /* The annoying part is that pattern matching needs
7367 * that we modify the contents to null-terminate all
7368 * strings before testing them.
7369 */
7370
7371 term = *cur_end;
7372 *cur_end = '\0';
7373
7374 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7375 switch (exp->action) {
7376 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7377 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7378 last_hdr = 1;
7379 break;
7380
7381 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7382 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7383 last_hdr = 1;
7384 break;
7385
7386 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7387 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7388 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7389 /* FIXME: if the user adds a newline in the replacement, the
7390 * index will not be recalculated for now, and the new line
7391 * will not be counted as a new header.
7392 */
7393
7394 cur_end += delta;
7395 cur_next += delta;
7396 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7397 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7398 break;
7399
7400 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7401 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7402 cur_next += delta;
7403
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 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7406 txn->hdr_idx.used--;
7407 cur_hdr->len = 0;
7408 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7409 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7410 break;
7411
7412 }
7413 }
7414 if (cur_end)
7415 *cur_end = term; /* restore the string terminator */
7416
7417 /* keep the link from this header to next one in case of later
7418 * removal of next header.
7419 */
7420 old_idx = cur_idx;
7421 }
7422 return 0;
7423}
7424
7425
7426/* Apply the filter to the status line in the response buffer <rtr>.
7427 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7428 * or -1 if a replacement resulted in an invalid status line.
7429 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7430int 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]7431{
7432 char term;
7433 char *cur_ptr, *cur_end;
7434 int done;
7435 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7436 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7437
7438
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7439 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7440 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7441 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7442 (exp->action == ACT_ALLOW ||
7443 exp->action == ACT_DENY))
7444 return 0;
7445 else if (exp->action == ACT_REMOVE)
7446 return 0;
7447
7448 done = 0;
7449
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7450 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7451 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7452
7453 /* Now we have the status line between cur_ptr and cur_end */
7454
7455 /* The annoying part is that pattern matching needs
7456 * that we modify the contents to null-terminate all
7457 * strings before testing them.
7458 */
7459
7460 term = *cur_end;
7461 *cur_end = '\0';
7462
7463 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7464 switch (exp->action) {
7465 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7466 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7467 done = 1;
7468 break;
7469
7470 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7471 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7472 done = 1;
7473 break;
7474
7475 case ACT_REPLACE:
7476 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7477 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7478 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7479 /* FIXME: if the user adds a newline in the replacement, the
7480 * index will not be recalculated for now, and the new line
7481 * will not be counted as a new header.
7482 */
7483
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7484 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7485 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7486 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7487 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7488 cur_ptr, cur_end + 1,
7489 NULL, NULL);
7490 if (unlikely(!cur_end))
7491 return -1;
7492
7493 /* we have a full respnse and we know that we have either a CR
7494 * or an LF at <ptr>.
7495 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7496 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]7497 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]7498 /* there is no point trying this regex on headers */
7499 return 1;
7500 }
7501 }
7502 *cur_end = term; /* restore the string terminator */
7503 return done;
7504}
7505
7506
7507
7508/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7509 * 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]7510 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7511 * unparsable response.
7512 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7513int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7514{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7515 struct http_txn *txn = &s->txn;
7516 struct hdr_exp *exp;
7517
7518 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7519 int ret;
7520
7521 /*
7522 * The interleaving of transformations and verdicts
7523 * makes it difficult to decide to continue or stop
7524 * the evaluation.
7525 */
7526
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7527 if (txn->flags & TX_SVDENY)
7528 break;
7529
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7530 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7531 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7532 exp->action == ACT_PASS)) {
7533 exp = exp->next;
7534 continue;
7535 }
7536
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7537 /* if this filter had a condition, evaluate it now and skip to
7538 * next filter if the condition does not match.
7539 */
7540 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7541 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]7542 ret = acl_pass(ret);
7543 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7544 ret = !ret;
7545 if (!ret)
7546 continue;
7547 }
7548
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7549 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7550 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7551 if (unlikely(ret < 0))
7552 return -1;
7553
7554 if (likely(ret == 0)) {
7555 /* The filter did not match the response, it can be
7556 * iterated through all headers.
7557 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7558 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7559 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7560 }
7561 return 0;
7562}
7563
7564
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7565/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7566 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7567 * desirable to call it only when needed. This function is also used when we
7568 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7569 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7570void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7571{
7572 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7573 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7574 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7575 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7576 char *hdr_beg, *hdr_end, *hdr_next;
7577 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7578
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7579 /* Iterate through the headers.
7580 * we start with the start line.
7581 */
7582 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7583 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7584
7585 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7586 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7587 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7588
7589 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7590 hdr_beg = hdr_next;
7591 hdr_end = hdr_beg + cur_hdr->len;
7592 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7593
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7594 /* We have one full header between hdr_beg and hdr_end, and the
7595 * next header starts at hdr_next. We're only interested in
7596 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7597 */
7598
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7599 is_cookie2 = 0;
7600 prev = hdr_beg + 10;
7601 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7602 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7603 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7604 if (!val) {
7605 old_idx = cur_idx;
7606 continue;
7607 }
7608 is_cookie2 = 1;
7609 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7610 }
7611
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7612 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7613 * <prev> points to the colon.
7614 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7615 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7616
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7617 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7618 * check-cache is enabled) and we are not interested in checking
7619 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7620 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7621 if (t->be->cookie_name == NULL &&
7622 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7623 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7624 return;
7625
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7626 /* OK so now we know we have to process this response cookie.
7627 * The format of the Set-Cookie header is slightly different
7628 * from the format of the Cookie header in that it does not
7629 * support the comma as a cookie delimiter (thus the header
7630 * cannot be folded) because the Expires attribute described in
7631 * the original Netscape's spec may contain an unquoted date
7632 * with a comma inside. We have to live with this because
7633 * many browsers don't support Max-Age and some browsers don't
7634 * support quoted strings. However the Set-Cookie2 header is
7635 * clean.
7636 *
7637 * We have to keep multiple pointers in order to support cookie
7638 * removal at the beginning, middle or end of header without
7639 * corrupting the header (in case of set-cookie2). A special
7640 * pointer, <scav> points to the beginning of the set-cookie-av
7641 * fields after the first semi-colon. The <next> pointer points
7642 * either to the end of line (set-cookie) or next unquoted comma
7643 * (set-cookie2). All of these headers are valid :
7644 *
7645 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7646 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7647 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7648 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7649 * | | | | | | | | | |
7650 * | | | | | | | | +-> next hdr_end <--+
7651 * | | | | | | | +------------> scav
7652 * | | | | | | +--------------> val_end
7653 * | | | | | +--------------------> val_beg
7654 * | | | | +----------------------> equal
7655 * | | | +------------------------> att_end
7656 * | | +----------------------------> att_beg
7657 * | +------------------------------> prev
7658 * +-----------------------------------------> hdr_beg
7659 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7660
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7661 for (; prev < hdr_end; prev = next) {
7662 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7663
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7664 /* find att_beg */
7665 att_beg = prev + 1;
7666 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7667 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7668
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7669 /* find att_end : this is the first character after the last non
7670 * space before the equal. It may be equal to hdr_end.
7671 */
7672 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7673
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7674 while (equal < hdr_end) {
7675 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7676 break;
7677 if (http_is_spht[(unsigned char)*equal++])
7678 continue;
7679 att_end = equal;
7680 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7681
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7682 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7683 * is between <att_beg> and <equal>, both may be identical.
7684 */
7685
7686 /* look for end of cookie if there is an equal sign */
7687 if (equal < hdr_end && *equal == '=') {
7688 /* look for the beginning of the value */
7689 val_beg = equal + 1;
7690 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7691 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7692
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7693 /* find the end of the value, respecting quotes */
7694 next = find_cookie_value_end(val_beg, hdr_end);
7695
7696 /* make val_end point to the first white space or delimitor after the value */
7697 val_end = next;
7698 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7699 val_end--;
7700 } else {
7701 /* <equal> points to next comma, semi-colon or EOL */
7702 val_beg = val_end = next = equal;
7703 }
7704
7705 if (next < hdr_end) {
7706 /* Set-Cookie2 supports multiple cookies, and <next> points to
7707 * a colon or semi-colon before the end. So skip all attr-value
7708 * pairs and look for the next comma. For Set-Cookie, since
7709 * commas are permitted in values, skip to the end.
7710 */
7711 if (is_cookie2)
7712 next = find_hdr_value_end(next, hdr_end);
7713 else
7714 next = hdr_end;
7715 }
7716
7717 /* Now everything is as on the diagram above */
7718
7719 /* Ignore cookies with no equal sign */
7720 if (equal == val_end)
7721 continue;
7722
7723 /* If there are spaces around the equal sign, we need to
7724 * strip them otherwise we'll get trouble for cookie captures,
7725 * or even for rewrites. Since this happens extremely rarely,
7726 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7727 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7728 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7729 int stripped_before = 0;
7730 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7731
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7732 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7733 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7734 equal += stripped_before;
7735 val_beg += stripped_before;
7736 }
7737
7738 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7739 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7740 val_beg += stripped_after;
7741 stripped_before += stripped_after;
7742 }
7743
7744 val_end += stripped_before;
7745 next += stripped_before;
7746 hdr_end += stripped_before;
7747 hdr_next += stripped_before;
7748 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7749 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7750 }
7751
7752 /* First, let's see if we want to capture this cookie. We check
7753 * that we don't already have a server side cookie, because we
7754 * can only capture one. Also as an optimisation, we ignore
7755 * cookies shorter than the declared name.
7756 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7757 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7758 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7759 (val_end - att_beg >= t->fe->capture_namelen) &&
7760 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7761 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7762 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7763 Alert("HTTP logging : out of memory.\n");
7764 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7765 else {
7766 if (log_len > t->fe->capture_len)
7767 log_len = t->fe->capture_len;
7768 memcpy(txn->srv_cookie, att_beg, log_len);
7769 txn->srv_cookie[log_len] = 0;
7770 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7771 }
7772
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7773 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7774 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7775 if (!(t->flags & SN_IGNORE_PRST) &&
7776 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7777 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7778 /* assume passive cookie by default */
7779 txn->flags &= ~TX_SCK_MASK;
7780 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7781
7782 /* If the cookie is in insert mode on a known server, we'll delete
7783 * this occurrence because we'll insert another one later.
7784 * 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]7785 * a direct access.
7786 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7787 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7788 /* The "preserve" flag was set, we don't want to touch the
7789 * server's cookie.
7790 */
7791 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7792 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7793 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7794 /* this cookie must be deleted */
7795 if (*prev == ':' && next == hdr_end) {
7796 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7797 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7798 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7799 txn->hdr_idx.used--;
7800 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7801 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7802 hdr_next += delta;
7803 http_msg_move_end(&txn->rsp, delta);
7804 /* note: while both invalid now, <next> and <hdr_end>
7805 * are still equal, so the for() will stop as expected.
7806 */
7807 } else {
7808 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7809 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7810 next = prev;
7811 hdr_end += delta;
7812 hdr_next += delta;
7813 cur_hdr->len += delta;
7814 http_msg_move_end(&txn->rsp, delta);
7815 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7816 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7817 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7818 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7819 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7820 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7821 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7822 * with this server since we know it.
7823 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7824 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7825 next += delta;
7826 hdr_end += delta;
7827 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7828 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7829 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7830
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7831 txn->flags &= ~TX_SCK_MASK;
7832 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7833 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7834 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7835 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7836 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7837 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7838 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7839 next += delta;
7840 hdr_end += delta;
7841 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7842 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7843 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7844
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7845 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7846 txn->flags &= ~TX_SCK_MASK;
7847 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7848 }
7849 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7850 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7851 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7852 int cmp_len, value_len;
7853 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7854
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7855 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7856 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7857 value_begin = att_beg + t->be->appsession_name_len;
7858 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]7859 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7860 cmp_len = att_end - att_beg;
7861 value_begin = val_beg;
7862 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7863 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7864
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7865 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7866 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7867 /* free a possibly previously allocated memory */
7868 pool_free2(apools.sessid, txn->sessid);
7869
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7870 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7871 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7872 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7873 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7874 return;
7875 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7876 memcpy(txn->sessid, value_begin, value_len);
7877 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7878 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7879 }
7880 /* that's done for this cookie, check the next one on the same
7881 * line when next != hdr_end (only if is_cookie2).
7882 */
7883 }
7884 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7885 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7886 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7887
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7888 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7889 appsess *asession = NULL;
7890 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7891 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7892 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7893 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7894 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7895 Alert("Not enough Memory process_srv():asession:calloc().\n");
7896 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7897 return;
7898 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7899 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7900
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7901 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7902 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7903 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]7904 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7905 return;
7906 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7907 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7908 asession->sessid[t->be->appsession_len] = 0;
7909
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7910 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7911 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7912 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7913 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]7914 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7915 return;
7916 }
7917 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7918 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7919
7920 asession->request_count = 0;
7921 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7922 }
7923
7924 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7925 asession->request_count++;
7926 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7927}
7928
7929
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7930/*
7931 * Check if response is cacheable or not. Updates t->flags.
7932 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7933void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7934{
7935 struct http_txn *txn = &t->txn;
7936 char *p1, *p2;
7937
7938 char *cur_ptr, *cur_end, *cur_next;
7939 int cur_idx;
7940
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7941 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7942 return;
7943
7944 /* Iterate through the headers.
7945 * we start with the start line.
7946 */
7947 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7948 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7949
7950 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7951 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7952 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7953
7954 cur_hdr = &txn->hdr_idx.v[cur_idx];
7955 cur_ptr = cur_next;
7956 cur_end = cur_ptr + cur_hdr->len;
7957 cur_next = cur_end + cur_hdr->cr + 1;
7958
7959 /* We have one full header between cur_ptr and cur_end, and the
7960 * next header starts at cur_next. We're only interested in
7961 * "Cookie:" headers.
7962 */
7963
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7964 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7965 if (val) {
7966 if ((cur_end - (cur_ptr + val) >= 8) &&
7967 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7968 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7969 return;
7970 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7971 }
7972
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7973 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7974 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7975 continue;
7976
7977 /* OK, right now we know we have a cache-control header at cur_ptr */
7978
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7979 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7980
7981 if (p1 >= cur_end) /* no more info */
7982 continue;
7983
7984 /* p1 is at the beginning of the value */
7985 p2 = p1;
7986
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7987 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7988 p2++;
7989
7990 /* we have a complete value between p1 and p2 */
7991 if (p2 < cur_end && *p2 == '=') {
7992 /* we have something of the form no-cache="set-cookie" */
7993 if ((cur_end - p1 >= 21) &&
7994 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7995 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7996 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7997 continue;
7998 }
7999
8000 /* OK, so we know that either p2 points to the end of string or to a comma */
8001 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8002 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8003 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8004 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8005 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8006 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8007 return;
8008 }
8009
8010 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8011 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8012 continue;
8013 }
8014 }
8015}
8016
8017
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8018/*
8019 * Try to retrieve a known appsession in the URI, then the associated server.
8020 * If the server is found, it's assigned to the session.
8021 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8022void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8023{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8024 char *end_params, *first_param, *cur_param, *next_param;
8025 char separator;
8026 int value_len;
8027
8028 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8029
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]8030 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]8031 (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]8032 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8033 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8034
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8035 first_param = NULL;
8036 switch (mode) {
8037 case PR_O2_AS_M_PP:
8038 first_param = memchr(begin, ';', len);
8039 break;
8040 case PR_O2_AS_M_QS:
8041 first_param = memchr(begin, '?', len);
8042 break;
8043 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8044
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8045 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8046 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8047 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8048
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8049 switch (mode) {
8050 case PR_O2_AS_M_PP:
8051 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
8052 end_params = (char *) begin + len;
8053 }
8054 separator = ';';
8055 break;
8056 case PR_O2_AS_M_QS:
8057 end_params = (char *) begin + len;
8058 separator = '&';
8059 break;
8060 default:
8061 /* unknown mode, shouldn't happen */
8062 return;
8063 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8064
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8065 cur_param = next_param = end_params;
8066 while (cur_param > first_param) {
8067 cur_param--;
8068 if ((cur_param[0] == separator) || (cur_param == first_param)) {
8069 /* let's see if this is the appsession parameter */
8070 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
8071 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
8072 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
8073 /* Cool... it's the right one */
8074 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
8075 value_len = MIN(t->be->appsession_len, next_param - cur_param);
8076 if (value_len > 0) {
8077 manage_client_side_appsession(t, cur_param, value_len);
8078 }
8079 break;
8080 }
8081 next_param = cur_param;
8082 }
8083 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8084#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]8085 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]8086 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8087#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8088}
8089
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8090/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8091 * 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]8092 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8093 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8094 * 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]8095 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8096 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8097 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8098 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8099int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8100{
8101 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8102 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8103 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8104
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8105 if (!uri_auth)
8106 return 0;
8107
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8108 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]8109 return 0;
8110
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8111 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8112 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8113 return 0;
8114
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8115 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8116 return 0;
8117
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8118 return 1;
8119}
8120
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8121/*
8122 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8123 * By default it tries to report the error position as msg->err_pos. However if
8124 * this one is not set, it will then report msg->next, which is the last known
8125 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8126 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8127 */
8128void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8129 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8130 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8131{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8132 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8133 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8134
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8135 es->len = MIN(chn->buf->i, sizeof(es->buf));
8136 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8137 len1 = MIN(len1, es->len);
8138 len2 = es->len - len1; /* remaining data if buffer wraps */
8139
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8140 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8141 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8142 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8143
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8144 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8145 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8146 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8147 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8148
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8149 es->when = date; // user-visible date
8150 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8151 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8152 es->oe = other_end;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8153 if (objt_conn(s->req->prod->end))
8154 es->src = __objt_conn(s->req->prod->end)->addr.from;
8155 else
8156 memset(&es->src, 0, sizeof(es->src));
8157
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8158 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8159 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8160 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8161 es->s_flags = s->flags;
8162 es->t_flags = s->txn.flags;
8163 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8164 es->b_out = chn->buf->o;
8165 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8166 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8167 es->m_clen = msg->chunk_len;
8168 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8169}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8170
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8171/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8172 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8173 * performed over the whole headers. Otherwise it must contain a valid header
8174 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8175 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8176 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8177 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8178 * -1. The value fetch stops at commas, so this function is suited for use with
8179 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8180 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8181 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8182unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8183 struct hdr_idx *idx, int occ,
8184 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8185{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8186 struct hdr_ctx local_ctx;
8187 char *ptr_hist[MAX_HDR_HISTORY];
8188 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8189 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8190 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8191
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8192 if (!ctx) {
8193 local_ctx.idx = 0;
8194 ctx = &local_ctx;
8195 }
8196
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8197 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8198 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8199 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8200 occ--;
8201 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8202 *vptr = ctx->line + ctx->val;
8203 *vlen = ctx->vlen;
8204 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8205 }
8206 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8207 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8208 }
8209
8210 /* negative occurrence, we scan all the list then walk back */
8211 if (-occ > MAX_HDR_HISTORY)
8212 return 0;
8213
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8214 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8215 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8216 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8217 len_hist[hist_ptr] = ctx->vlen;
8218 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8219 hist_ptr = 0;
8220 found++;
8221 }
8222 if (-occ > found)
8223 return 0;
8224 /* 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]8225 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8226 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8227 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8228 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8229 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8230 if (hist_ptr >= MAX_HDR_HISTORY)
8231 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8232 *vptr = ptr_hist[hist_ptr];
8233 *vlen = len_hist[hist_ptr];
8234 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8235}
8236
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8237/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8238 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8239 * performed over the whole headers. Otherwise it must contain a valid header
8240 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8241 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8242 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8243 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8244 * -1. This function differs from http_get_hdr() in that it only returns full
8245 * line header values and does not stop at commas.
8246 * The return value is 0 if nothing was found, or non-zero otherwise.
8247 */
8248unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8249 struct hdr_idx *idx, int occ,
8250 struct hdr_ctx *ctx, char **vptr, int *vlen)
8251{
8252 struct hdr_ctx local_ctx;
8253 char *ptr_hist[MAX_HDR_HISTORY];
8254 int len_hist[MAX_HDR_HISTORY];
8255 unsigned int hist_ptr;
8256 int found;
8257
8258 if (!ctx) {
8259 local_ctx.idx = 0;
8260 ctx = &local_ctx;
8261 }
8262
8263 if (occ >= 0) {
8264 /* search from the beginning */
8265 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8266 occ--;
8267 if (occ <= 0) {
8268 *vptr = ctx->line + ctx->val;
8269 *vlen = ctx->vlen;
8270 return 1;
8271 }
8272 }
8273 return 0;
8274 }
8275
8276 /* negative occurrence, we scan all the list then walk back */
8277 if (-occ > MAX_HDR_HISTORY)
8278 return 0;
8279
8280 found = hist_ptr = 0;
8281 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8282 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8283 len_hist[hist_ptr] = ctx->vlen;
8284 if (++hist_ptr >= MAX_HDR_HISTORY)
8285 hist_ptr = 0;
8286 found++;
8287 }
8288 if (-occ > found)
8289 return 0;
8290 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8291 * find occurrence -occ, so we have to check [hist_ptr+occ].
8292 */
8293 hist_ptr += occ;
8294 if (hist_ptr >= MAX_HDR_HISTORY)
8295 hist_ptr -= MAX_HDR_HISTORY;
8296 *vptr = ptr_hist[hist_ptr];
8297 *vlen = len_hist[hist_ptr];
8298 return 1;
8299}
8300
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8301/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8302 * Print a debug line with a header. Always stop at the first CR or LF char,
8303 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8304 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8305 */
8306void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
8307{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8308 int max;
8309 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8310 dir,
8311 objt_conn(t->req->prod->end) ? (unsigned short)objt_conn(t->req->prod->end)->t.sock.fd : -1,
8312 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]8313
8314 for (max = 0; start + max < end; max++)
8315 if (start[max] == '\r' || start[max] == '\n')
8316 break;
8317
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8318 UBOUND(max, trash.size - trash.len - 3);
8319 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8320 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8321 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8322}
8323
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8324/*
8325 * Initialize a new HTTP transaction for session <s>. It is assumed that all
8326 * the required fields are properly allocated and that we only need to (re)init
8327 * them. This should be used before processing any new request.
8328 */
8329void http_init_txn(struct session *s)
8330{
8331 struct http_txn *txn = &s->txn;
8332 struct proxy *fe = s->fe;
8333
8334 txn->flags = 0;
8335 txn->status = -1;
8336
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8337 txn->cookie_first_date = 0;
8338 txn->cookie_last_date = 0;
8339
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8340 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8341 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8342 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8343 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8344 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8345 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8346 txn->req.chunk_len = 0LL;
8347 txn->req.body_len = 0LL;
8348 txn->rsp.chunk_len = 0LL;
8349 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8350 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8351 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8352 txn->req.chn = s->req;
8353 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8354
8355 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8356
8357 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8358 if (fe->options2 & PR_O2_REQBUG_OK)
8359 txn->req.err_pos = -1; /* let buggy requests pass */
8360
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8361 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8362 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8363
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8364 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8365 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8366
8367 if (txn->hdr_idx.v)
8368 hdr_idx_init(&txn->hdr_idx);
8369}
8370
8371/* to be used at the end of a transaction */
8372void http_end_txn(struct session *s)
8373{
8374 struct http_txn *txn = &s->txn;
8375
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]8376 /* release any possible compression context */
8377 if (s->flags & SN_COMP_READY)
8378 s->comp_algo->end(&s->comp_ctx);
8379 s->comp_algo = NULL;
8380 s->flags &= ~SN_COMP_READY;
8381
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8382 /* these ones will have been dynamically allocated */
8383 pool_free2(pool2_requri, txn->uri);
8384 pool_free2(pool2_capture, txn->cli_cookie);
8385 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8386 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8387 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8388
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8389 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8390 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8391 txn->uri = NULL;
8392 txn->srv_cookie = NULL;
8393 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8394
8395 if (txn->req.cap) {
8396 struct cap_hdr *h;
8397 for (h = s->fe->req_cap; h; h = h->next)
8398 pool_free2(h->pool, txn->req.cap[h->index]);
8399 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8400 }
8401
8402 if (txn->rsp.cap) {
8403 struct cap_hdr *h;
8404 for (h = s->fe->rsp_cap; h; h = h->next)
8405 pool_free2(h->pool, txn->rsp.cap[h->index]);
8406 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8407 }
8408
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8409}
8410
8411/* to be used at the end of a transaction to prepare a new one */
8412void http_reset_txn(struct session *s)
8413{
8414 http_end_txn(s);
8415 http_init_txn(s);
8416
8417 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8418 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8419 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8420 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8421 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8422 /* re-init store persistence */
8423 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8424 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8425
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8426 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8427
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8428 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8429
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8430 /* We must trim any excess data from the response buffer, because we
8431 * may have blocked an invalid response from a server that we don't
8432 * want to accidentely forward once we disable the analysers, nor do
8433 * we want those data to come along with next response. A typical
8434 * example of such data would be from a buggy server responding to
8435 * a HEAD with some data, or sending more than the advertised
8436 * content-length.
8437 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8438 if (unlikely(s->rep->buf->i))
8439 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8440
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8441 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8442 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8443
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8444 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8445 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8446
8447 s->req->rex = TICK_ETERNITY;
8448 s->req->wex = TICK_ETERNITY;
8449 s->req->analyse_exp = TICK_ETERNITY;
8450 s->rep->rex = TICK_ETERNITY;
8451 s->rep->wex = TICK_ETERNITY;
8452 s->rep->analyse_exp = TICK_ETERNITY;
8453}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8454
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8455void free_http_req_rules(struct list *r) {
8456 struct http_req_rule *tr, *pr;
8457
8458 list_for_each_entry_safe(pr, tr, r, list) {
8459 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8460 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8461 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8462
8463 free(pr);
8464 }
8465}
8466
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8467/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8468struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8469{
8470 struct http_req_rule *rule;
8471 int cur_arg;
8472
8473 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8474 if (!rule) {
8475 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8476 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8477 }
8478
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8479 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8480 rule->action = HTTP_REQ_ACT_ALLOW;
8481 cur_arg = 1;
8482 } else if (!strcmp(args[0], "deny")) {
8483 rule->action = HTTP_REQ_ACT_DENY;
8484 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8485 } else if (!strcmp(args[0], "tarpit")) {
8486 rule->action = HTTP_REQ_ACT_TARPIT;
8487 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8488 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8489 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8490 cur_arg = 1;
8491
8492 while(*args[cur_arg]) {
8493 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8494 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8495 cur_arg+=2;
8496 continue;
8497 } else
8498 break;
8499 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8500 } else if (!strcmp(args[0], "set-nice")) {
8501 rule->action = HTTP_REQ_ACT_SET_NICE;
8502 cur_arg = 1;
8503
8504 if (!*args[cur_arg] ||
8505 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8506 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8507 file, linenum, args[0]);
8508 goto out_err;
8509 }
8510 rule->arg.nice = atoi(args[cur_arg]);
8511 if (rule->arg.nice < -1024)
8512 rule->arg.nice = -1024;
8513 else if (rule->arg.nice > 1024)
8514 rule->arg.nice = 1024;
8515 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8516 } else if (!strcmp(args[0], "set-tos")) {
8517#ifdef IP_TOS
8518 char *err;
8519 rule->action = HTTP_REQ_ACT_SET_TOS;
8520 cur_arg = 1;
8521
8522 if (!*args[cur_arg] ||
8523 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8524 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8525 file, linenum, args[0]);
8526 goto out_err;
8527 }
8528
8529 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8530 if (err && *err != '\0') {
8531 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8532 file, linenum, err, args[0]);
8533 goto out_err;
8534 }
8535 cur_arg++;
8536#else
8537 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8538 goto out_err;
8539#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8540 } else if (!strcmp(args[0], "set-mark")) {
8541#ifdef SO_MARK
8542 char *err;
8543 rule->action = HTTP_REQ_ACT_SET_MARK;
8544 cur_arg = 1;
8545
8546 if (!*args[cur_arg] ||
8547 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8548 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8549 file, linenum, args[0]);
8550 goto out_err;
8551 }
8552
8553 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8554 if (err && *err != '\0') {
8555 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8556 file, linenum, err, args[0]);
8557 goto out_err;
8558 }
8559 cur_arg++;
8560 global.last_checks |= LSTCHK_NETADM;
8561#else
8562 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8563 goto out_err;
8564#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8565 } else if (!strcmp(args[0], "set-log-level")) {
8566 rule->action = HTTP_REQ_ACT_SET_LOGL;
8567 cur_arg = 1;
8568
8569 if (!*args[cur_arg] ||
8570 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8571 bad_log_level:
8572 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8573 file, linenum, args[0]);
8574 goto out_err;
8575 }
8576 if (strcmp(args[cur_arg], "silent") == 0)
8577 rule->arg.loglevel = -1;
8578 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8579 goto bad_log_level;
8580 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8581 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8582 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8583 cur_arg = 1;
8584
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8585 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8586 (*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]8587 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8588 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8589 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8590 }
8591
8592 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8593 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8594 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8595
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8596 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8597 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]8598 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8599 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8600 free(proxy->conf.lfs_file);
8601 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8602 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8603 cur_arg += 2;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8604 } else if (strcmp(args[0], "del-header") == 0) {
8605 rule->action = HTTP_REQ_ACT_DEL_HDR;
8606 cur_arg = 1;
8607
8608 if (!*args[cur_arg] ||
8609 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8610 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
8611 file, linenum, args[0]);
8612 goto out_err;
8613 }
8614
8615 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8616 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8617
8618 proxy->conf.args.ctx = ARGC_HRQ;
8619 free(proxy->conf.lfs_file);
8620 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8621 proxy->conf.lfs_line = proxy->conf.args.line;
8622 cur_arg += 1;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8623 } else if (strcmp(args[0], "redirect") == 0) {
8624 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]8625 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8626
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8627 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]8628 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8629 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8630 goto out_err;
8631 }
8632
8633 /* this redirect rule might already contain a parsed condition which
8634 * we'll pass to the http-request rule.
8635 */
8636 rule->action = HTTP_REQ_ACT_REDIR;
8637 rule->arg.redir = redir;
8638 rule->cond = redir->cond;
8639 redir->cond = NULL;
8640 cur_arg = 2;
8641 return rule;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8642 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8643 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]8644 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8645 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8646 }
8647
8648 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8649 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8650 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8651
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8652 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8653 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
8654 file, linenum, args[0], errmsg);
8655 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8656 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8657 }
8658 rule->cond = cond;
8659 }
8660 else if (*args[cur_arg]) {
8661 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
8662 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8663 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8664 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8665 }
8666
8667 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8668 out_err:
8669 free(rule);
8670 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8671}
8672
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8673/* parse an "http-respose" rule */
8674struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8675{
8676 struct http_res_rule *rule;
8677 int cur_arg;
8678
8679 rule = calloc(1, sizeof(*rule));
8680 if (!rule) {
8681 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
8682 goto out_err;
8683 }
8684
8685 if (!strcmp(args[0], "allow")) {
8686 rule->action = HTTP_RES_ACT_ALLOW;
8687 cur_arg = 1;
8688 } else if (!strcmp(args[0], "deny")) {
8689 rule->action = HTTP_RES_ACT_DENY;
8690 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8691 } else if (!strcmp(args[0], "set-nice")) {
8692 rule->action = HTTP_RES_ACT_SET_NICE;
8693 cur_arg = 1;
8694
8695 if (!*args[cur_arg] ||
8696 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8697 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
8698 file, linenum, args[0]);
8699 goto out_err;
8700 }
8701 rule->arg.nice = atoi(args[cur_arg]);
8702 if (rule->arg.nice < -1024)
8703 rule->arg.nice = -1024;
8704 else if (rule->arg.nice > 1024)
8705 rule->arg.nice = 1024;
8706 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8707 } else if (!strcmp(args[0], "set-tos")) {
8708#ifdef IP_TOS
8709 char *err;
8710 rule->action = HTTP_RES_ACT_SET_TOS;
8711 cur_arg = 1;
8712
8713 if (!*args[cur_arg] ||
8714 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8715 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8716 file, linenum, args[0]);
8717 goto out_err;
8718 }
8719
8720 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8721 if (err && *err != '\0') {
8722 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8723 file, linenum, err, args[0]);
8724 goto out_err;
8725 }
8726 cur_arg++;
8727#else
8728 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8729 goto out_err;
8730#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8731 } else if (!strcmp(args[0], "set-mark")) {
8732#ifdef SO_MARK
8733 char *err;
8734 rule->action = HTTP_RES_ACT_SET_MARK;
8735 cur_arg = 1;
8736
8737 if (!*args[cur_arg] ||
8738 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8739 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8740 file, linenum, args[0]);
8741 goto out_err;
8742 }
8743
8744 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8745 if (err && *err != '\0') {
8746 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8747 file, linenum, err, args[0]);
8748 goto out_err;
8749 }
8750 cur_arg++;
8751 global.last_checks |= LSTCHK_NETADM;
8752#else
8753 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8754 goto out_err;
8755#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8756 } else if (!strcmp(args[0], "set-log-level")) {
8757 rule->action = HTTP_RES_ACT_SET_LOGL;
8758 cur_arg = 1;
8759
8760 if (!*args[cur_arg] ||
8761 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8762 bad_log_level:
8763 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
8764 file, linenum, args[0]);
8765 goto out_err;
8766 }
8767 if (strcmp(args[cur_arg], "silent") == 0)
8768 rule->arg.loglevel = -1;
8769 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
8770 goto bad_log_level;
8771 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8772 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8773 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
8774 cur_arg = 1;
8775
8776 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8777 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
8778 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
8779 file, linenum, args[0]);
8780 goto out_err;
8781 }
8782
8783 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8784 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8785 LIST_INIT(&rule->arg.hdr_add.fmt);
8786
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8787 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8788 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]8789 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
8790 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8791 free(proxy->conf.lfs_file);
8792 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8793 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8794 cur_arg += 2;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]8795 } else if (strcmp(args[0], "del-header") == 0) {
8796 rule->action = HTTP_RES_ACT_DEL_HDR;
8797 cur_arg = 1;
8798
8799 if (!*args[cur_arg] ||
8800 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
8801 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
8802 file, linenum, args[0]);
8803 goto out_err;
8804 }
8805
8806 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8807 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8808
8809 proxy->conf.args.ctx = ARGC_HRS;
8810 free(proxy->conf.lfs_file);
8811 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8812 proxy->conf.lfs_line = proxy->conf.args.line;
8813 cur_arg += 1;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8814 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8815 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]8816 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
8817 goto out_err;
8818 }
8819
8820 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8821 struct acl_cond *cond;
8822 char *errmsg = NULL;
8823
8824 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8825 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
8826 file, linenum, args[0], errmsg);
8827 free(errmsg);
8828 goto out_err;
8829 }
8830 rule->cond = cond;
8831 }
8832 else if (*args[cur_arg]) {
8833 Alert("parsing [%s:%d]: 'http-response %s' expects"
8834 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8835 file, linenum, args[0], args[cur_arg]);
8836 goto out_err;
8837 }
8838
8839 return rule;
8840 out_err:
8841 free(rule);
8842 return NULL;
8843}
8844
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8845/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8846 * with <err> filled with the error message. If <use_fmt> is not null, builds a
8847 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8848 */
8849struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8850 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8851{
8852 struct redirect_rule *rule;
8853 int cur_arg;
8854 int type = REDIRECT_TYPE_NONE;
8855 int code = 302;
8856 const char *destination = NULL;
8857 const char *cookie = NULL;
8858 int cookie_set = 0;
8859 unsigned int flags = REDIRECT_FLAG_NONE;
8860 struct acl_cond *cond = NULL;
8861
8862 cur_arg = 0;
8863 while (*(args[cur_arg])) {
8864 if (strcmp(args[cur_arg], "location") == 0) {
8865 if (!*args[cur_arg + 1])
8866 goto missing_arg;
8867
8868 type = REDIRECT_TYPE_LOCATION;
8869 cur_arg++;
8870 destination = args[cur_arg];
8871 }
8872 else if (strcmp(args[cur_arg], "prefix") == 0) {
8873 if (!*args[cur_arg + 1])
8874 goto missing_arg;
8875
8876 type = REDIRECT_TYPE_PREFIX;
8877 cur_arg++;
8878 destination = args[cur_arg];
8879 }
8880 else if (strcmp(args[cur_arg], "scheme") == 0) {
8881 if (!*args[cur_arg + 1])
8882 goto missing_arg;
8883
8884 type = REDIRECT_TYPE_SCHEME;
8885 cur_arg++;
8886 destination = args[cur_arg];
8887 }
8888 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
8889 if (!*args[cur_arg + 1])
8890 goto missing_arg;
8891
8892 cur_arg++;
8893 cookie = args[cur_arg];
8894 cookie_set = 1;
8895 }
8896 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
8897 if (!*args[cur_arg + 1])
8898 goto missing_arg;
8899
8900 cur_arg++;
8901 cookie = args[cur_arg];
8902 cookie_set = 0;
8903 }
8904 else if (strcmp(args[cur_arg], "code") == 0) {
8905 if (!*args[cur_arg + 1])
8906 goto missing_arg;
8907
8908 cur_arg++;
8909 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8910 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8911 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8912 "'%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]8913 args[cur_arg - 1], args[cur_arg]);
8914 return NULL;
8915 }
8916 }
8917 else if (!strcmp(args[cur_arg],"drop-query")) {
8918 flags |= REDIRECT_FLAG_DROP_QS;
8919 }
8920 else if (!strcmp(args[cur_arg],"append-slash")) {
8921 flags |= REDIRECT_FLAG_APPEND_SLASH;
8922 }
8923 else if (strcmp(args[cur_arg], "if") == 0 ||
8924 strcmp(args[cur_arg], "unless") == 0) {
8925 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
8926 if (!cond) {
8927 memprintf(errmsg, "error in condition: %s", *errmsg);
8928 return NULL;
8929 }
8930 break;
8931 }
8932 else {
8933 memprintf(errmsg,
8934 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
8935 args[cur_arg]);
8936 return NULL;
8937 }
8938 cur_arg++;
8939 }
8940
8941 if (type == REDIRECT_TYPE_NONE) {
8942 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
8943 return NULL;
8944 }
8945
8946 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
8947 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]8948 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8949
8950 if (!use_fmt) {
8951 /* old-style static redirect rule */
8952 rule->rdr_str = strdup(destination);
8953 rule->rdr_len = strlen(destination);
8954 }
8955 else {
8956 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8957
8958 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
8959 * if prefix == "/", we don't want to add anything, otherwise it
8960 * makes it hard for the user to configure a self-redirection.
8961 */
8962 proxy->conf.args.ctx = ARGC_RDR;
8963 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8964 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]8965 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8966 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8967 free(curproxy->conf.lfs_file);
8968 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
8969 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8970 }
8971 }
8972
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8973 if (cookie) {
8974 /* depending on cookie_set, either we want to set the cookie, or to clear it.
8975 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
8976 */
8977 rule->cookie_len = strlen(cookie);
8978 if (cookie_set) {
8979 rule->cookie_str = malloc(rule->cookie_len + 10);
8980 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8981 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
8982 rule->cookie_len += 9;
8983 } else {
8984 rule->cookie_str = malloc(rule->cookie_len + 21);
8985 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8986 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
8987 rule->cookie_len += 20;
8988 }
8989 }
8990 rule->type = type;
8991 rule->code = code;
8992 rule->flags = flags;
8993 LIST_INIT(&rule->list);
8994 return rule;
8995
8996 missing_arg:
8997 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
8998 return NULL;
8999}
9000
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9001/************************************************************************/
9002/* The code below is dedicated to ACL parsing and matching */
9003/************************************************************************/
9004
9005
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9006/* This function ensures that the prerequisites for an L7 fetch are ready,
9007 * which means that a request or response is ready. If some data is missing,
9008 * 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]9009 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9010 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9011 *
9012 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9013 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9014 * decide whether or not an HTTP message is present ;
9015 * 0 if the requested data cannot be fetched or if it is certain that
9016 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9017 * 1 if an HTTP message is ready
9018 */
9019static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9020smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9021 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9022{
9023 struct http_txn *txn = l7;
9024 struct http_msg *msg = &txn->req;
9025
9026 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9027 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9028 */
9029
9030 if (unlikely(!s || !txn))
9031 return 0;
9032
9033 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9034 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9035
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9036 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9037 if (unlikely(!s->req))
9038 return 0;
9039
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9040 /* If the buffer does not leave enough free space at the end,
9041 * we must first realign it.
9042 */
9043 if (s->req->buf->p > s->req->buf->data &&
9044 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
9045 buffer_slow_realign(s->req->buf);
9046
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9047 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9048 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9049 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9050
9051 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9052 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9053 http_msg_analyzer(msg, &txn->hdr_idx);
9054
9055 /* Still no valid request ? */
9056 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9057 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9058 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9059 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9060 }
9061 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9062 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9063 return 0;
9064 }
9065
9066 /* OK we just got a valid HTTP request. We have some minor
9067 * preparation to perform so that further checks can rely
9068 * on HTTP tests.
9069 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9070
9071 /* If the request was parsed but was too large, we must absolutely
9072 * return an error so that it is not processed. At the moment this
9073 * cannot happen, but if the parsers are to change in the future,
9074 * we want this check to be maintained.
9075 */
9076 if (unlikely(s->req->buf->i + s->req->buf->p >
9077 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
9078 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9079 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9080 return 1;
9081 }
9082
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9083 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9084 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
9085 s->flags |= SN_REDIRECTABLE;
9086
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9087 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
9088 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9089 }
9090
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9091 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9092 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9093 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9094
9095 /* otherwise everything's ready for the request */
9096 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9097 else {
9098 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9099 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
9100 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9101 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9102 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9103 }
9104
9105 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9106 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9107 return 1;
9108}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9109
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9110#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9111 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]9112
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9113#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9114 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]9115
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9116
9117/* 1. Check on METHOD
9118 * We use the pre-parsed method if it is known, and store its number as an
9119 * integer. If it is unknown, we use the pointer and the length.
9120 */
Thierry FOURNIERedc15c32013-12-13 15:36:59 +0100[diff] [blame]9121static int pat_parse_meth(const char *text, struct pattern *pattern, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9122{
9123 int len, meth;
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]9124 struct chunk *trash;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9125
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]9126 len = strlen(text);
9127 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9128
9129 pattern->val.i = meth;
9130 if (meth == HTTP_METH_OTHER) {
Thierry FOURNIERedc15c32013-12-13 15:36:59 +0100[diff] [blame]9131 trash = get_trash_chunk();
9132 if (trash->size < len) {
9133 memprintf(err, "no space avalaible in the buffer. expect %d, provides %d",
9134 len, trash->size);
9135 return 0;
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]9136 }
Thierry FOURNIERedc15c32013-12-13 15:36:59 +0100[diff] [blame]9137 pattern->ptr.str = trash->str;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9138 pattern->len = len;
9139 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9140 else {
9141 pattern->ptr.str = NULL;
9142 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9143 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9144 return 1;
9145}
9146
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9147/* This function fetches the method of current HTTP request and stores
9148 * it in the global pattern struct as a chunk. There are two possibilities :
9149 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
9150 * in <len> and <ptr> is NULL ;
9151 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
9152 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9153 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9154 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9155static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9156smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9157 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9158{
9159 int meth;
9160 struct http_txn *txn = l7;
9161
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9162 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9163
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9164 meth = txn->meth;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9165 smp->type = SMP_T_METH;
9166 smp->data.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9167 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9168 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
9169 /* ensure the indexes are not affected */
9170 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9171 smp->flags |= SMP_F_CONST;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9172 smp->data.meth.str.len = txn->req.sl.rq.m_l;
9173 smp->data.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9174 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9175 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9176 return 1;
9177}
9178
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9179/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9180static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9181{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9182 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9183 struct pattern_list *lst;
9184 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9185
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9186 list_for_each_entry(lst, &expr->patterns, list) {
9187 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9188
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9189 /* well-known method */
9190 if (pattern->val.i != HTTP_METH_OTHER) {
9191 if (smp->data.meth.meth == pattern->val.i)
9192 return pattern;
9193 else
9194 continue;
9195 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9196
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9197 /* Other method, we must compare the strings */
9198 if (pattern->len != smp->data.meth.str.len)
9199 continue;
9200
9201 icase = pattern->flags & PAT_F_IGNORE_CASE;
9202 if ((icase && strncasecmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) != 0) ||
9203 (!icase && strncmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) != 0))
9204 return pattern;
9205 }
9206 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9207}
9208
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9209static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9210smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9211 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9212{
9213 struct http_txn *txn = l7;
9214 char *ptr;
9215 int len;
9216
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9217 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9218
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9219 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9220 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9221
9222 while ((len-- > 0) && (*ptr++ != '/'));
9223 if (len <= 0)
9224 return 0;
9225
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9226 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9227 smp->data.str.str = ptr;
9228 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9229
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9230 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9231 return 1;
9232}
9233
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9234static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9235smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9236 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9237{
9238 struct http_txn *txn = l7;
9239 char *ptr;
9240 int len;
9241
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9242 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9243
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9244 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9245 return 0;
9246
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9247 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9248 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9249
9250 while ((len-- > 0) && (*ptr++ != '/'));
9251 if (len <= 0)
9252 return 0;
9253
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9254 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9255 smp->data.str.str = ptr;
9256 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9257
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9258 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9259 return 1;
9260}
9261
9262/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9263static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9264smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9265 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9266{
9267 struct http_txn *txn = l7;
9268 char *ptr;
9269 int len;
9270
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9271 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9272
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9273 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9274 return 0;
9275
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9276 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9277 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9278
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9279 smp->type = SMP_T_UINT;
9280 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9281 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9282 return 1;
9283}
9284
9285/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9286static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9287smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9288 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9289{
9290 struct http_txn *txn = l7;
9291
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9292 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9293
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9294 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9295 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9296 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9297 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9298 return 1;
9299}
9300
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9301static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9302smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9303 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9304{
9305 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9306 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9307
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9308 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9309
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]9310 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]9311 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]9312 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9313
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9314 smp->type = SMP_T_IPV4;
9315 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9316 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9317 return 1;
9318}
9319
9320static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9321smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9322 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9323{
9324 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9325 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9326
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9327 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9328
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]9329 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]9330 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
9331 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9332
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9333 smp->type = SMP_T_UINT;
9334 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]9335 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9336 return 1;
9337}
9338
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9339/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9340 * Accepts an optional argument of type string containing the header field name,
9341 * and an optional argument of type signed or unsigned integer to request an
9342 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9343 * headers are considered from the first one. It does not stop on commas and
9344 * returns full lines instead (useful for User-Agent or Date for example).
9345 */
9346static int
9347smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9348 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9349{
9350 struct http_txn *txn = l7;
9351 struct hdr_idx *idx = &txn->hdr_idx;
9352 struct hdr_ctx *ctx = smp->ctx.a[0];
9353 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9354 int occ = 0;
9355 const char *name_str = NULL;
9356 int name_len = 0;
9357
9358 if (!ctx) {
9359 /* first call */
9360 ctx = &static_hdr_ctx;
9361 ctx->idx = 0;
9362 smp->ctx.a[0] = ctx;
9363 }
9364
9365 if (args) {
9366 if (args[0].type != ARGT_STR)
9367 return 0;
9368 name_str = args[0].data.str.str;
9369 name_len = args[0].data.str.len;
9370
9371 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9372 occ = args[1].data.uint;
9373 }
9374
9375 CHECK_HTTP_MESSAGE_FIRST();
9376
9377 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
9378 /* search for header from the beginning */
9379 ctx->idx = 0;
9380
9381 if (!occ && !(opt & SMP_OPT_ITERATE))
9382 /* no explicit occurrence and single fetch => last header by default */
9383 occ = -1;
9384
9385 if (!occ)
9386 /* prepare to report multiple occurrences for ACL fetches */
9387 smp->flags |= SMP_F_NOT_LAST;
9388
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9389 smp->type = SMP_T_STR;
9390 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9391 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
9392 return 1;
9393
9394 smp->flags &= ~SMP_F_NOT_LAST;
9395 return 0;
9396}
9397
9398/* 6. Check on HTTP header count. The number of occurrences is returned.
9399 * Accepts exactly 1 argument of type string. It does not stop on commas and
9400 * returns full lines instead (useful for User-Agent or Date for example).
9401 */
9402static int
9403smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9404 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9405{
9406 struct http_txn *txn = l7;
9407 struct hdr_idx *idx = &txn->hdr_idx;
9408 struct hdr_ctx ctx;
9409 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9410 int cnt;
9411
9412 if (!args || args->type != ARGT_STR)
9413 return 0;
9414
9415 CHECK_HTTP_MESSAGE_FIRST();
9416
9417 ctx.idx = 0;
9418 cnt = 0;
9419 while (http_find_full_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
9420 cnt++;
9421
9422 smp->type = SMP_T_UINT;
9423 smp->data.uint = cnt;
9424 smp->flags = SMP_F_VOL_HDR;
9425 return 1;
9426}
9427
9428/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9429 * Accepts an optional argument of type string containing the header field name,
9430 * and an optional argument of type signed or unsigned integer to request an
9431 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9432 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9433 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9434static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9435smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9436 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9437{
9438 struct http_txn *txn = l7;
9439 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9440 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9441 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]9442 int occ = 0;
9443 const char *name_str = NULL;
9444 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9445
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9446 if (!ctx) {
9447 /* first call */
9448 ctx = &static_hdr_ctx;
9449 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]9450 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9451 }
9452
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9453 if (args) {
9454 if (args[0].type != ARGT_STR)
9455 return 0;
9456 name_str = args[0].data.str.str;
9457 name_len = args[0].data.str.len;
9458
9459 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9460 occ = args[1].data.uint;
9461 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9462
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9463 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9464
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9465 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9466 /* search for header from the beginning */
9467 ctx->idx = 0;
9468
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9469 if (!occ && !(opt & SMP_OPT_ITERATE))
9470 /* no explicit occurrence and single fetch => last header by default */
9471 occ = -1;
9472
9473 if (!occ)
9474 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9475 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]9476
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9477 smp->type = SMP_T_STR;
9478 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9479 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]9480 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9481
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9482 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9483 return 0;
9484}
9485
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9486/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9487 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9488 */
9489static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9490smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9491 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9492{
9493 struct http_txn *txn = l7;
9494 struct hdr_idx *idx = &txn->hdr_idx;
9495 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9496 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]9497 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9498
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9499 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9500 return 0;
9501
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9502 CHECK_HTTP_MESSAGE_FIRST();
9503
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9504 ctx.idx = 0;
9505 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9506 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]9507 cnt++;
9508
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9509 smp->type = SMP_T_UINT;
9510 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9511 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9512 return 1;
9513}
9514
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9515/* Fetch an HTTP header's integer value. The integer value is returned. It
9516 * takes a mandatory argument of type string and an optional one of type int
9517 * to designate a specific occurrence. It returns an unsigned integer, which
9518 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9519 */
9520static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9521smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9522 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9523{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9524 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9525
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9526 if (ret > 0) {
9527 smp->type = SMP_T_UINT;
9528 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9529 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9530
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9531 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9532}
9533
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9534/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
9535 * and an optional one of type int to designate a specific occurrence.
9536 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9537 */
9538static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9539smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9540 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9541{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9542 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9543
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9544 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9545 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
9546 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9547 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9548 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9549 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9550 if (smp->data.str.len < temp->size - 1) {
9551 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
9552 temp->str[smp->data.str.len] = '\0';
9553 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
9554 smp->type = SMP_T_IPV6;
9555 break;
9556 }
9557 }
9558 }
9559
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9560 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9561 if (!(smp->flags & SMP_F_NOT_LAST))
9562 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9563 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9564 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9565}
9566
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9567/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
9568 * the first '/' after the possible hostname, and ends before the possible '?'.
9569 */
9570static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9571smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9572 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9573{
9574 struct http_txn *txn = l7;
9575 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9576
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9577 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9578
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9579 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]9580 ptr = http_get_path(txn);
9581 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9582 return 0;
9583
9584 /* OK, we got the '/' ! */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9585 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9586 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9587
9588 while (ptr < end && *ptr != '?')
9589 ptr++;
9590
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9591 smp->data.str.len = ptr - smp->data.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9592 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9593 return 1;
9594}
9595
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9596/* This produces a concatenation of the first occurrence of the Host header
9597 * followed by the path component if it begins with a slash ('/'). This means
9598 * that '*' will not be added, resulting in exactly the first Host entry.
9599 * If no Host header is found, then the path is returned as-is. The returned
9600 * 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]9601 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9602 */
9603static int
9604smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9605 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9606{
9607 struct http_txn *txn = l7;
9608 char *ptr, *end, *beg;
9609 struct hdr_ctx ctx;
9610
9611 CHECK_HTTP_MESSAGE_FIRST();
9612
9613 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]9614 if (!http_find_header2("Host", 4, txn->req.chn->buf->p, &txn->hdr_idx, &ctx) || !ctx.vlen)
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9615 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9616
9617 /* 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]9618 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9619 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]9620 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9621 smp->data.str.len = ctx.vlen;
9622
9623 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]9624 end = txn->req.chn->buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9625 beg = http_get_path(txn);
9626 if (!beg)
9627 beg = end;
9628
9629 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9630
9631 if (beg < ptr && *beg == '/') {
9632 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
9633 smp->data.str.len += ptr - beg;
9634 }
9635
9636 smp->flags = SMP_F_VOL_1ST;
9637 return 1;
9638}
9639
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9640/* This produces a 32-bit hash of the concatenation of the first occurrence of
9641 * the Host header followed by the path component if it begins with a slash ('/').
9642 * This means that '*' will not be added, resulting in exactly the first Host
9643 * 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]9644 * is hashed using the path hash followed by a full avalanche hash and provides a
9645 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9646 * high-traffic sites without having to store whole paths.
9647 */
9648static int
9649smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9650 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9651{
9652 struct http_txn *txn = l7;
9653 struct hdr_ctx ctx;
9654 unsigned int hash = 0;
9655 char *ptr, *beg, *end;
9656 int len;
9657
9658 CHECK_HTTP_MESSAGE_FIRST();
9659
9660 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]9661 if (http_find_header2("Host", 4, txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9662 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
9663 ptr = ctx.line + ctx.val;
9664 len = ctx.vlen;
9665 while (len--)
9666 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
9667 }
9668
9669 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]9670 end = txn->req.chn->buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9671 beg = http_get_path(txn);
9672 if (!beg)
9673 beg = end;
9674
9675 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9676
9677 if (beg < ptr && *beg == '/') {
9678 while (beg < ptr)
9679 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
9680 }
9681 hash = full_hash(hash);
9682
9683 smp->type = SMP_T_UINT;
9684 smp->data.uint = hash;
9685 smp->flags = SMP_F_VOL_1ST;
9686 return 1;
9687}
9688
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9689/* 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]9690 * path as returned by smp_fetch_base32(). The idea is to have per-source and
9691 * per-path counters. The result is a binary block from 8 to 20 bytes depending
9692 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9693 * that in environments where IPv6 is insignificant, truncating the output to
9694 * 8 bytes would still work.
9695 */
9696static int
9697smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9698 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9699{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9700 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9701 struct connection *cli_conn = objt_conn(l4->si[0].end);
9702
9703 if (!cli_conn)
9704 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9705
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9706 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9707 return 0;
9708
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9709 temp = get_trash_chunk();
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9710 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
9711 temp->len += sizeof(smp->data.uint);
9712
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9713 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9714 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9715 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]9716 temp->len += 4;
9717 break;
9718 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9719 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]9720 temp->len += 16;
9721 break;
9722 default:
9723 return 0;
9724 }
9725
9726 smp->data.str = *temp;
9727 smp->type = SMP_T_BIN;
9728 return 1;
9729}
9730
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9731static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9732smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9733 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9734{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9735 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9736 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9737 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9738
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9739 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9740
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9741 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9742 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9743 return 1;
9744}
9745
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9746/* return a valid test if the current request is the first one on the connection */
9747static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9748smp_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]9749 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9750{
9751 if (!s)
9752 return 0;
9753
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9754 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9755 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9756 return 1;
9757}
9758
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9759/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9760static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9761smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9762 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9763{
9764
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9765 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9766 return 0;
9767
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9768 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9769
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9770 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9771 return 0;
9772
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9773 smp->type = SMP_T_BOOL;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]9774 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]9775 return 1;
9776}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9777
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9778/* Accepts exactly 1 argument of type userlist */
9779static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9780smp_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]9781 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9782{
9783
9784 if (!args || args->type != ARGT_USR)
9785 return 0;
9786
9787 CHECK_HTTP_MESSAGE_FIRST();
9788
9789 if (!get_http_auth(l4))
9790 return 0;
9791
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9792 /* if the user does not belong to the userlist or has a wrong password,
9793 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]9794 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9795 */
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]9796 if (!check_user(args->data.usr, l4->txn.auth.user, l4->txn.auth.pass))
9797 return 0;
9798
9799 /* pat_match_auth() will need the user list */
9800 smp->ctx.a[0] = args->data.usr;
9801
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9802 smp->type = SMP_T_STR;
9803 smp->flags = SMP_F_CONST;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]9804 smp->data.str.str = l4->txn.auth.user;
9805 smp->data.str.len = strlen(l4->txn.auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9806
9807 return 1;
9808}
9809
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9810/* Try to find the next occurrence of a cookie name in a cookie header value.
9811 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
9812 * the cookie value is returned into *value and *value_l, and the function
9813 * returns a pointer to the next pointer to search from if the value was found.
9814 * Otherwise if the cookie was not found, NULL is returned and neither value
9815 * nor value_l are touched. The input <hdr> string should first point to the
9816 * header's value, and the <hdr_end> pointer must point to the first character
9817 * not part of the value. <list> must be non-zero if value may represent a list
9818 * of values (cookie headers). This makes it faster to abort parsing when no
9819 * list is expected.
9820 */
9821static char *
9822extract_cookie_value(char *hdr, const char *hdr_end,
9823 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]9824 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9825{
9826 char *equal, *att_end, *att_beg, *val_beg, *val_end;
9827 char *next;
9828
9829 /* we search at least a cookie name followed by an equal, and more
9830 * generally something like this :
9831 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
9832 */
9833 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
9834 /* Iterate through all cookies on this line */
9835
9836 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
9837 att_beg++;
9838
9839 /* find att_end : this is the first character after the last non
9840 * space before the equal. It may be equal to hdr_end.
9841 */
9842 equal = att_end = att_beg;
9843
9844 while (equal < hdr_end) {
9845 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
9846 break;
9847 if (http_is_spht[(unsigned char)*equal++])
9848 continue;
9849 att_end = equal;
9850 }
9851
9852 /* here, <equal> points to '=', a delimitor or the end. <att_end>
9853 * is between <att_beg> and <equal>, both may be identical.
9854 */
9855
9856 /* look for end of cookie if there is an equal sign */
9857 if (equal < hdr_end && *equal == '=') {
9858 /* look for the beginning of the value */
9859 val_beg = equal + 1;
9860 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
9861 val_beg++;
9862
9863 /* find the end of the value, respecting quotes */
9864 next = find_cookie_value_end(val_beg, hdr_end);
9865
9866 /* make val_end point to the first white space or delimitor after the value */
9867 val_end = next;
9868 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
9869 val_end--;
9870 } else {
9871 val_beg = val_end = next = equal;
9872 }
9873
9874 /* We have nothing to do with attributes beginning with '$'. However,
9875 * they will automatically be removed if a header before them is removed,
9876 * since they're supposed to be linked together.
9877 */
9878 if (*att_beg == '$')
9879 continue;
9880
9881 /* Ignore cookies with no equal sign */
9882 if (equal == next)
9883 continue;
9884
9885 /* Now we have the cookie name between att_beg and att_end, and
9886 * its value between val_beg and val_end.
9887 */
9888
9889 if (att_end - att_beg == cookie_name_l &&
9890 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
9891 /* let's return this value and indicate where to go on from */
9892 *value = val_beg;
9893 *value_l = val_end - val_beg;
9894 return next + 1;
9895 }
9896
9897 /* Set-Cookie headers only have the name in the first attr=value part */
9898 if (!list)
9899 break;
9900 }
9901
9902 return NULL;
9903}
9904
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]9905/* Fetch a captured HTTP request header. The index is the position of
9906 * the "capture" option in the configuration file
9907 */
9908static int
9909smp_fetch_capture_header_req(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9910 const struct arg *args, struct sample *smp, const char *kw)
9911{
9912 struct proxy *fe = l4->fe;
9913 struct http_txn *txn = l7;
9914 int idx;
9915
9916 if (!args || args->type != ARGT_UINT)
9917 return 0;
9918
9919 idx = args->data.uint;
9920
9921 if (idx > (fe->nb_req_cap - 1) || txn->req.cap == NULL || txn->req.cap[idx] == NULL)
9922 return 0;
9923
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9924 smp->type = SMP_T_STR;
9925 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]9926 smp->data.str.str = txn->req.cap[idx];
9927 smp->data.str.len = strlen(txn->req.cap[idx]);
9928
9929 return 1;
9930}
9931
9932/* Fetch a captured HTTP response header. The index is the position of
9933 * the "capture" option in the configuration file
9934 */
9935static int
9936smp_fetch_capture_header_res(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9937 const struct arg *args, struct sample *smp, const char *kw)
9938{
9939 struct proxy *fe = l4->fe;
9940 struct http_txn *txn = l7;
9941 int idx;
9942
9943 if (!args || args->type != ARGT_UINT)
9944 return 0;
9945
9946 idx = args->data.uint;
9947
9948 if (idx > (fe->nb_rsp_cap - 1) || txn->rsp.cap == NULL || txn->rsp.cap[idx] == NULL)
9949 return 0;
9950
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9951 smp->type = SMP_T_STR;
9952 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]9953 smp->data.str.str = txn->rsp.cap[idx];
9954 smp->data.str.len = strlen(txn->rsp.cap[idx]);
9955
9956 return 1;
9957}
9958
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]9959/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
9960static int
9961smp_fetch_capture_req_method(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9962 const struct arg *args, struct sample *smp, const char *kw)
9963{
9964 struct chunk *temp;
9965 struct http_txn *txn = l7;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]9966 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]9967
9968 if (!txn->uri)
9969 return 0;
9970
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]9971 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]9972
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]9973 while (*ptr != ' ' && *ptr != '\0') /* find first space */
9974 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]9975
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]9976 temp = get_trash_chunk();
9977 temp->str = txn->uri;
9978 temp->len = ptr - txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]9979 smp->data.str = *temp;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9980 smp->type = SMP_T_STR;
9981 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]9982
9983 return 1;
9984
9985}
9986
9987/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
9988static int
9989smp_fetch_capture_req_uri(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9990 const struct arg *args, struct sample *smp, const char *kw)
9991{
9992 struct chunk *temp;
9993 struct http_txn *txn = l7;
9994 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]9995
9996 if (!txn->uri)
9997 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]9998
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]9999 ptr = txn->uri;
10000
10001 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10002 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10003
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10004 if (!*ptr)
10005 return 0;
10006
10007 ptr++; /* skip the space */
10008
10009 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10010 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10011 if (!ptr)
10012 return 0;
10013 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
10014 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10015
10016 smp->data.str = *temp;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10017 smp->data.str.len = ptr - temp->str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10018 smp->type = SMP_T_STR;
10019 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10020
10021 return 1;
10022}
10023
10024
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10025/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10026 * 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]10027 * 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]10028 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10029 * 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]10030 * Accepts exactly 1 argument of type string. If the input options indicate
10031 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]10032 * The returned sample is of type CSTR.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10033 */
10034static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10035smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10036 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10037{
10038 struct http_txn *txn = l7;
10039 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10040 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10041 const struct http_msg *msg;
10042 const char *hdr_name;
10043 int hdr_name_len;
10044 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10045 int occ = 0;
10046 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10047
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10048 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10049 return 0;
10050
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10051 if (!ctx) {
10052 /* first call */
10053 ctx = &static_hdr_ctx;
10054 ctx->idx = 0;
10055 smp->ctx.a[2] = ctx;
10056 }
10057
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10058 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10059
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10060 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10061 msg = &txn->req;
10062 hdr_name = "Cookie";
10063 hdr_name_len = 6;
10064 } else {
10065 msg = &txn->rsp;
10066 hdr_name = "Set-Cookie";
10067 hdr_name_len = 10;
10068 }
10069
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10070 if (!occ && !(opt & SMP_OPT_ITERATE))
10071 /* no explicit occurrence and single fetch => last cookie by default */
10072 occ = -1;
10073
10074 /* OK so basically here, either we want only one value and it's the
10075 * last one, or we want to iterate over all of them and we fetch the
10076 * next one.
10077 */
10078
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10079 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10080 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10081 /* search for the header from the beginning, we must first initialize
10082 * the search parameters.
10083 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10084 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10085 ctx->idx = 0;
10086 }
10087
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10088 smp->flags |= SMP_F_VOL_HDR;
10089
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10090 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10091 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
10092 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10093 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
10094 goto out;
10095
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10096 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10097 continue;
10098
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10099 smp->ctx.a[0] = ctx->line + ctx->val;
10100 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10101 }
10102
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10103 smp->type = SMP_T_STR;
10104 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10105 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]10106 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10107 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10108 &smp->data.str.str,
10109 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10110 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10111 found = 1;
10112 if (occ >= 0) {
10113 /* one value was returned into smp->data.str.{str,len} */
10114 smp->flags |= SMP_F_NOT_LAST;
10115 return 1;
10116 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10117 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10118 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10119 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10120 /* all cookie headers and values were scanned. If we're looking for the
10121 * last occurrence, we may return it now.
10122 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10123 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10124 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10125 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10126}
10127
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10128/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10129 * 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]10130 * multiple cookies may be parsed on the same line. The returned sample is of
10131 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10132 */
10133static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10134smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10135 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10136{
10137 struct http_txn *txn = l7;
10138 struct hdr_idx *idx = &txn->hdr_idx;
10139 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10140 const struct http_msg *msg;
10141 const char *hdr_name;
10142 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10143 int cnt;
10144 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10145 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10146
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10147 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10148 return 0;
10149
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10150 CHECK_HTTP_MESSAGE_FIRST();
10151
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10152 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10153 msg = &txn->req;
10154 hdr_name = "Cookie";
10155 hdr_name_len = 6;
10156 } else {
10157 msg = &txn->rsp;
10158 hdr_name = "Set-Cookie";
10159 hdr_name_len = 10;
10160 }
10161
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10162 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]10163 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10164 ctx.idx = 0;
10165 cnt = 0;
10166
10167 while (1) {
10168 /* Note: val_beg == NULL every time we need to fetch a new header */
10169 if (!val_beg) {
10170 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
10171 break;
10172
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10173 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10174 continue;
10175
10176 val_beg = ctx.line + ctx.val;
10177 val_end = val_beg + ctx.vlen;
10178 }
10179
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10180 smp->type = SMP_T_STR;
10181 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10182 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10183 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10184 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10185 &smp->data.str.str,
10186 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10187 cnt++;
10188 }
10189 }
10190
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]10191 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10192 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10193 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10194 return 1;
10195}
10196
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10197/* Fetch an cookie's integer value. The integer value is returned. It
10198 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
10199 */
10200static int
10201smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10202 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10203{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10204 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]10205
10206 if (ret > 0) {
10207 smp->type = SMP_T_UINT;
10208 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10209 }
10210
10211 return ret;
10212}
10213
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10214/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10215/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10216/************************************************************************/
10217
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10218/*
10219 * Given a path string and its length, find the position of beginning of the
10220 * query string. Returns NULL if no query string is found in the path.
10221 *
10222 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
10223 *
10224 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
10225 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10226static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10227{
10228 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]10229
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10230 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10231 return p ? p + 1 : NULL;
10232}
10233
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10234static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10235{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10236 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10237}
10238
10239/*
10240 * Given a url parameter, find the starting position of the first occurence,
10241 * or NULL if the parameter is not found.
10242 *
10243 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
10244 * the function will return query_string+8.
10245 */
10246static char*
10247find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10248 char* url_param_name, size_t url_param_name_l,
10249 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10250{
10251 char *pos, *last;
10252
10253 pos = query_string;
10254 last = query_string + query_string_l - url_param_name_l - 1;
10255
10256 while (pos <= last) {
10257 if (pos[url_param_name_l] == '=') {
10258 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
10259 return pos;
10260 pos += url_param_name_l + 1;
10261 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10262 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10263 pos++;
10264 pos++;
10265 }
10266 return NULL;
10267}
10268
10269/*
10270 * Given a url parameter name, returns its value and size into *value and
10271 * *value_l respectively, and returns non-zero. If the parameter is not found,
10272 * zero is returned and value/value_l are not touched.
10273 */
10274static int
10275find_url_param_value(char* path, size_t path_l,
10276 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10277 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10278{
10279 char *query_string, *qs_end;
10280 char *arg_start;
10281 char *value_start, *value_end;
10282
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10283 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10284 if (!query_string)
10285 return 0;
10286
10287 qs_end = path + path_l;
10288 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10289 url_param_name, url_param_name_l,
10290 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10291 if (!arg_start)
10292 return 0;
10293
10294 value_start = arg_start + url_param_name_l + 1;
10295 value_end = value_start;
10296
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10297 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10298 value_end++;
10299
10300 *value = value_start;
10301 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]10302 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10303}
10304
10305static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10306smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10307 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10308{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10309 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10310 struct http_txn *txn = l7;
10311 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10312
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10313 if (!args || args[0].type != ARGT_STR ||
10314 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10315 return 0;
10316
10317 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10318
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10319 if (args[1].type)
10320 delim = *args[1].data.str.str;
10321
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10322 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]10323 args->data.str.str, args->data.str.len,
10324 &smp->data.str.str, &smp->data.str.len,
10325 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10326 return 0;
10327
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10328 smp->type = SMP_T_STR;
10329 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10330 return 1;
10331}
10332
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]10333/* Return the signed integer value for the specified url parameter (see url_param
10334 * above).
10335 */
10336static int
10337smp_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]10338 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]10339{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10340 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]10341
10342 if (ret > 0) {
10343 smp->type = SMP_T_UINT;
10344 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10345 }
10346
10347 return ret;
10348}
10349
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10350/* This produces a 32-bit hash of the concatenation of the first occurrence of
10351 * the Host header followed by the path component if it begins with a slash ('/').
10352 * This means that '*' will not be added, resulting in exactly the first Host
10353 * entry. If no Host header is found, then the path is used. The resulting value
10354 * is hashed using the url hash followed by a full avalanche hash and provides a
10355 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
10356 * high-traffic sites without having to store whole paths.
10357 * this differs from the base32 functions in that it includes the url parameters
10358 * as well as the path
10359 */
10360static int
10361smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]10362 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10363{
10364 struct http_txn *txn = l7;
10365 struct hdr_ctx ctx;
10366 unsigned int hash = 0;
10367 char *ptr, *beg, *end;
10368 int len;
10369
10370 CHECK_HTTP_MESSAGE_FIRST();
10371
10372 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10373 if (http_find_header2("Host", 4, txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10374 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10375 ptr = ctx.line + ctx.val;
10376 len = ctx.vlen;
10377 while (len--)
10378 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10379 }
10380
10381 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10382 end = txn->req.chn->buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10383 beg = http_get_path(txn);
10384 if (!beg)
10385 beg = end;
10386
10387 for (ptr = beg; ptr < end ; ptr++);
10388
10389 if (beg < ptr && *beg == '/') {
10390 while (beg < ptr)
10391 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10392 }
10393 hash = full_hash(hash);
10394
10395 smp->type = SMP_T_UINT;
10396 smp->data.uint = hash;
10397 smp->flags = SMP_F_VOL_1ST;
10398 return 1;
10399}
10400
10401/* This concatenates the source address with the 32-bit hash of the Host and
10402 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
10403 * per-url counters. The result is a binary block from 8 to 20 bytes depending
10404 * on the source address length. The URL hash is stored before the address so
10405 * that in environments where IPv6 is insignificant, truncating the output to
10406 * 8 bytes would still work.
10407 */
10408static int
10409smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]10410 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10411{
10412 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10413 struct connection *cli_conn = objt_conn(l4->si[0].end);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10414
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]10415 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10416 return 0;
10417
10418 temp = get_trash_chunk();
10419 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
10420 temp->len += sizeof(smp->data.uint);
10421
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10422 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10423 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10424 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]10425 temp->len += 4;
10426 break;
10427 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10428 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]10429 temp->len += 16;
10430 break;
10431 default:
10432 return 0;
10433 }
10434
10435 smp->data.str = *temp;
10436 smp->type = SMP_T_BIN;
10437 return 1;
10438}
10439
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10440/* This function is used to validate the arguments passed to any "hdr" fetch
10441 * keyword. These keywords support an optional positive or negative occurrence
10442 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
10443 * is assumed that the types are already the correct ones. Returns 0 on error,
10444 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
10445 * error message in case of error, that the caller is responsible for freeing.
10446 * The initial location must either be freeable or NULL.
10447 */
10448static int val_hdr(struct arg *arg, char **err_msg)
10449{
10450 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]10451 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10452 return 0;
10453 }
10454 return 1;
10455}
10456
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10457/* takes an UINT value on input supposed to represent the time since EPOCH,
10458 * adds an optional offset found in args[0] and emits a string representing
10459 * the date in RFC-1123/5322 format.
10460 */
10461static int sample_conv_http_date(const struct arg *args, struct sample *smp)
10462{
10463 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
10464 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
10465 struct chunk *temp;
10466 struct tm *tm;
10467 time_t curr_date = smp->data.uint;
10468
10469 /* add offset */
10470 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
10471 curr_date += args[0].data.sint;
10472
10473 tm = gmtime(&curr_date);
10474
10475 temp = get_trash_chunk();
10476 temp->len = snprintf(temp->str, temp->size - temp->len,
10477 "%s, %02d %s %04d %02d:%02d:%02d GMT",
10478 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
10479 tm->tm_hour, tm->tm_min, tm->tm_sec);
10480
10481 smp->data.str = *temp;
10482 smp->type = SMP_T_STR;
10483 return 1;
10484}
10485
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]10486/* Match language range with language tag. RFC2616 14.4:
10487 *
10488 * A language-range matches a language-tag if it exactly equals
10489 * the tag, or if it exactly equals a prefix of the tag such
10490 * that the first tag character following the prefix is "-".
10491 *
10492 * Return 1 if the strings match, else return 0.
10493 */
10494static inline int language_range_match(const char *range, int range_len,
10495 const char *tag, int tag_len)
10496{
10497 const char *end = range + range_len;
10498 const char *tend = tag + tag_len;
10499 while (range < end) {
10500 if (*range == '-' && tag == tend)
10501 return 1;
10502 if (*range != *tag || tag == tend)
10503 return 0;
10504 range++;
10505 tag++;
10506 }
10507 /* Return true only if the last char of the tag is matched. */
10508 return tag == tend;
10509}
10510
10511/* Arguments: The list of expected value, the number of parts returned and the separator */
10512static int sample_conv_q_prefered(const struct arg *args, struct sample *smp)
10513{
10514 const char *al = smp->data.str.str;
10515 const char *end = al + smp->data.str.len;
10516 const char *token;
10517 int toklen;
10518 int qvalue;
10519 const char *str;
10520 const char *w;
10521 int best_q = 0;
10522
10523 /* Set the constant to the sample, because the output of the
10524 * function will be peek in the constant configuration string.
10525 */
10526 smp->flags |= SMP_F_CONST;
10527 smp->data.str.size = 0;
10528 smp->data.str.str = "";
10529 smp->data.str.len = 0;
10530
10531 /* Parse the accept language */
10532 while (1) {
10533
10534 /* Jump spaces, quit if the end is detected. */
10535 while (al < end && isspace(*al))
10536 al++;
10537 if (al >= end)
10538 break;
10539
10540 /* Start of the fisrt word. */
10541 token = al;
10542
10543 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
10544 while (al < end && *al != ';' && *al != ',' && !isspace(*al))
10545 al++;
10546 if (al == token)
10547 goto expect_comma;
10548
10549 /* Length of the token. */
10550 toklen = al - token;
10551 qvalue = 1000;
10552
10553 /* Check if the token exists in the list. If the token not exists,
10554 * jump to the next token.
10555 */
10556 str = args[0].data.str.str;
10557 w = str;
10558 while (1) {
10559 if (*str == ';' || *str == '\0') {
10560 if (language_range_match(token, toklen, w, str-w))
10561 goto look_for_q;
10562 if (*str == '\0')
10563 goto expect_comma;
10564 w = str + 1;
10565 }
10566 str++;
10567 }
10568 goto expect_comma;
10569
10570look_for_q:
10571
10572 /* Jump spaces, quit if the end is detected. */
10573 while (al < end && isspace(*al))
10574 al++;
10575 if (al >= end)
10576 goto process_value;
10577
10578 /* If ',' is found, process the result */
10579 if (*al == ',')
10580 goto process_value;
10581
10582 /* If the character is different from ';', look
10583 * for the end of the header part in best effort.
10584 */
10585 if (*al != ';')
10586 goto expect_comma;
10587
10588 /* Assumes that the char is ';', now expect "q=". */
10589 al++;
10590
10591 /* Jump spaces, process value if the end is detected. */
10592 while (al < end && isspace(*al))
10593 al++;
10594 if (al >= end)
10595 goto process_value;
10596
10597 /* Expect 'q'. If no 'q', continue in best effort */
10598 if (*al != 'q')
10599 goto process_value;
10600 al++;
10601
10602 /* Jump spaces, process value if the end is detected. */
10603 while (al < end && isspace(*al))
10604 al++;
10605 if (al >= end)
10606 goto process_value;
10607
10608 /* Expect '='. If no '=', continue in best effort */
10609 if (*al != '=')
10610 goto process_value;
10611 al++;
10612
10613 /* Jump spaces, process value if the end is detected. */
10614 while (al < end && isspace(*al))
10615 al++;
10616 if (al >= end)
10617 goto process_value;
10618
10619 /* Parse the q value. */
10620 qvalue = parse_qvalue(al, &al);
10621
10622process_value:
10623
10624 /* If the new q value is the best q value, then store the associated
10625 * language in the response. If qvalue is the biggest value (1000),
10626 * break the process.
10627 */
10628 if (qvalue > best_q) {
10629 smp->data.str.str = (char *)w;
10630 smp->data.str.len = str - w;
10631 if (qvalue >= 1000)
10632 break;
10633 best_q = qvalue;
10634 }
10635
10636expect_comma:
10637
10638 /* Expect comma or end. If the end is detected, quit the loop. */
10639 while (al < end && *al != ',')
10640 al++;
10641 if (al >= end)
10642 break;
10643
10644 /* Comma is found, jump it and restart the analyzer. */
10645 al++;
10646 }
10647
10648 /* Set default value if required. */
10649 if (smp->data.str.len == 0 && args[1].type == ARGT_STR) {
10650 smp->data.str.str = args[1].data.str.str;
10651 smp->data.str.len = args[1].data.str.len;
10652 }
10653
10654 /* Return true only if a matching language was found. */
10655 return smp->data.str.len != 0;
10656}
10657
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10658/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10659/* All supported ACL keywords must be declared here. */
10660/************************************************************************/
10661
10662/* Note: must not be declared <const> as its list will be overwritten.
10663 * Please take care of keeping this list alphabetically sorted.
10664 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]10665static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10666 { "base", "base", PAT_MATCH_STR },
10667 { "base_beg", "base", PAT_MATCH_BEG },
10668 { "base_dir", "base", PAT_MATCH_DIR },
10669 { "base_dom", "base", PAT_MATCH_DOM },
10670 { "base_end", "base", PAT_MATCH_END },
10671 { "base_len", "base", PAT_MATCH_LEN },
10672 { "base_reg", "base", PAT_MATCH_REG },
10673 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10674
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10675 { "cook", "req.cook", PAT_MATCH_STR },
10676 { "cook_beg", "req.cook", PAT_MATCH_BEG },
10677 { "cook_dir", "req.cook", PAT_MATCH_DIR },
10678 { "cook_dom", "req.cook", PAT_MATCH_DOM },
10679 { "cook_end", "req.cook", PAT_MATCH_END },
10680 { "cook_len", "req.cook", PAT_MATCH_LEN },
10681 { "cook_reg", "req.cook", PAT_MATCH_REG },
10682 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10683
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10684 { "hdr", "req.hdr", PAT_MATCH_STR },
10685 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
10686 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
10687 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
10688 { "hdr_end", "req.hdr", PAT_MATCH_END },
10689 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
10690 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
10691 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10692
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10693 /* these two declarations uses strings with list storage (in place
10694 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
10695 * and delete functions are relative to the list management. The parse
10696 * and match method are related to the corresponding fetch methods. This
10697 * is very particular ACL declaration mode.
10698 */
10699 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
10700 { "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]10701
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10702 { "path", "path", PAT_MATCH_STR },
10703 { "path_beg", "path", PAT_MATCH_BEG },
10704 { "path_dir", "path", PAT_MATCH_DIR },
10705 { "path_dom", "path", PAT_MATCH_DOM },
10706 { "path_end", "path", PAT_MATCH_END },
10707 { "path_len", "path", PAT_MATCH_LEN },
10708 { "path_reg", "path", PAT_MATCH_REG },
10709 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10710
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10711 { "req_ver", "req.ver", PAT_MATCH_STR },
10712 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10713
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10714 { "scook", "res.cook", PAT_MATCH_STR },
10715 { "scook_beg", "res.cook", PAT_MATCH_BEG },
10716 { "scook_dir", "res.cook", PAT_MATCH_DIR },
10717 { "scook_dom", "res.cook", PAT_MATCH_DOM },
10718 { "scook_end", "res.cook", PAT_MATCH_END },
10719 { "scook_len", "res.cook", PAT_MATCH_LEN },
10720 { "scook_reg", "res.cook", PAT_MATCH_REG },
10721 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10722
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10723 { "shdr", "res.hdr", PAT_MATCH_STR },
10724 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
10725 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
10726 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
10727 { "shdr_end", "res.hdr", PAT_MATCH_END },
10728 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
10729 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
10730 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10731
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10732 { "url", "url", PAT_MATCH_STR },
10733 { "url_beg", "url", PAT_MATCH_BEG },
10734 { "url_dir", "url", PAT_MATCH_DIR },
10735 { "url_dom", "url", PAT_MATCH_DOM },
10736 { "url_end", "url", PAT_MATCH_END },
10737 { "url_len", "url", PAT_MATCH_LEN },
10738 { "url_reg", "url", PAT_MATCH_REG },
10739 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10740
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]10741 { "urlp", "urlp", PAT_MATCH_STR },
10742 { "urlp_beg", "urlp", PAT_MATCH_BEG },
10743 { "urlp_dir", "urlp", PAT_MATCH_DIR },
10744 { "urlp_dom", "urlp", PAT_MATCH_DOM },
10745 { "urlp_end", "urlp", PAT_MATCH_END },
10746 { "urlp_len", "urlp", PAT_MATCH_LEN },
10747 { "urlp_reg", "urlp", PAT_MATCH_REG },
10748 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10749
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]10750 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10751}};
10752
10753/************************************************************************/
10754/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10755/************************************************************************/
10756/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]10757static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10758 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10759 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10760 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
10761
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10762 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
10763 { "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]10764
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10765 /* capture are allocated and are permanent in the session */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10766 { "capture.req.hdr", smp_fetch_capture_header_req, ARG1(1, UINT), NULL, SMP_T_STR, SMP_USE_HRQHP },
10767 { "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]10768
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10769 /* cookie is valid in both directions (eg: for "stick ...") but cook*
10770 * are only here to match the ACL's name, are request-only and are used
10771 * for ACL compatibility only.
10772 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10773 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
10774 { "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]10775 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10776 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10777
10778 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
10779 * only here to match the ACL's name, are request-only and are used for
10780 * ACL compatibility only.
10781 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10782 { "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]10783 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10784 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10785 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10786
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]10787 { "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]10788 { "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]10789 { "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]10790 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10791 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10792
10793 /* HTTP protocol on the request path */
10794 { "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]10795 { "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]10796
10797 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10798 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
10799 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10800
10801 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10802 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
10803 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10804
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10805 /* 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]10806 { "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]10807 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10808 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10809
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10810 { "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]10811 { "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]10812 { "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]10813 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10814 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10815 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10816
10817 /* 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]10818 { "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]10819 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10820 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10821
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10822 { "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]10823 { "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]10824 { "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]10825 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10826 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10827 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10828
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10829 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10830 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10831 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10832 { "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]10833 { "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]10834
10835 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10836 { "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]10837 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10838 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10839 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10840
10841 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10842 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10843 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10844 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10845 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
10846 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10847 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
10848 { "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]10849 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10850 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10851}};
10852
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10853
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10854/* Note: must not be declared <const> as its list will be overwritten */
10855static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]10856 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR},
10857 { "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]10858 { NULL, NULL, 0, 0, 0 },
10859}};
10860
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10861__attribute__((constructor))
10862static void __http_protocol_init(void)
10863{
10864 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10865 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10866 sample_register_convs(&sample_conv_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10867}
10868
10869
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]10870/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]10871 * Local variables:
10872 * c-indent-level: 8
10873 * c-basic-offset: 8
10874 * End:
10875 */