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git01.mediatek.com / haproxy / dfb124fe0dfc151bf26ddce7fc305377fe70b16b / . / src / proto_http.c
blob: 504a0a94d073fdd96d3f2fb7daf523b4e1494eef [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]28#include <common/appsession.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]29#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]30#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]31#include <common/compat.h>
32#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]33#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/memory.h>
35#include <common/mini-clist.h>
36#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]37#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]38#include <common/time.h>
39#include <common/uri_auth.h>
40#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]41
42#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]46#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]47#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]48#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]49#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]50#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]51#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]52#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]54#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]55#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]56#include <proto/hdr_idx.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]57#include <proto/pattern.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]58#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]59#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]60#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]61#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]62#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]63#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]64#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]65#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]66#include <proto/task.h>
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]67#include <proto/pattern.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]68
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]69const char HTTP_100[] =
70 "HTTP/1.1 100 Continue\r\n\r\n";
71
72const struct chunk http_100_chunk = {
73 .str = (char *)&HTTP_100,
74 .len = sizeof(HTTP_100)-1
75};
76
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]77/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]78const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]79 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]80 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]81 "Location: "; /* not terminated since it will be concatenated with the URL */
82
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]83const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]84 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]85 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]86 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]87 "Location: "; /* not terminated since it will be concatenated with the URL */
88
89/* same as 302 except that the browser MUST retry with the GET method */
90const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]91 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]92 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]93 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]94 "Location: "; /* not terminated since it will be concatenated with the URL */
95
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]96
97/* same as 302 except that the browser MUST retry with the same method */
98const char *HTTP_307 =
99 "HTTP/1.1 307 Temporary Redirect\r\n"
100 "Cache-Control: no-cache\r\n"
101 "Content-length: 0\r\n"
102 "Location: "; /* not terminated since it will be concatenated with the URL */
103
104/* same as 301 except that the browser MUST retry with the same method */
105const char *HTTP_308 =
106 "HTTP/1.1 308 Permanent Redirect\r\n"
107 "Content-length: 0\r\n"
108 "Location: "; /* not terminated since it will be concatenated with the URL */
109
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]110/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
111const char *HTTP_401_fmt =
112 "HTTP/1.0 401 Unauthorized\r\n"
113 "Cache-Control: no-cache\r\n"
114 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]115 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]116 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
117 "\r\n"
118 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
119
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]120const char *HTTP_407_fmt =
121 "HTTP/1.0 407 Unauthorized\r\n"
122 "Cache-Control: no-cache\r\n"
123 "Connection: close\r\n"
124 "Content-Type: text/html\r\n"
125 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
126 "\r\n"
Godbach1f1fae62014-12-17 16:32:05 +0800[diff] [blame]127 "<html><body><h1>407 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]128
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]129
130const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]131 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]132 [HTTP_ERR_400] = 400,
133 [HTTP_ERR_403] = 403,
134 [HTTP_ERR_408] = 408,
135 [HTTP_ERR_500] = 500,
136 [HTTP_ERR_502] = 502,
137 [HTTP_ERR_503] = 503,
138 [HTTP_ERR_504] = 504,
139};
140
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]141static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]142 [HTTP_ERR_200] =
143 "HTTP/1.0 200 OK\r\n"
144 "Cache-Control: no-cache\r\n"
145 "Connection: close\r\n"
146 "Content-Type: text/html\r\n"
147 "\r\n"
148 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
149
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]150 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]151 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]152 "Cache-Control: no-cache\r\n"
153 "Connection: close\r\n"
154 "Content-Type: text/html\r\n"
155 "\r\n"
156 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
157
158 [HTTP_ERR_403] =
159 "HTTP/1.0 403 Forbidden\r\n"
160 "Cache-Control: no-cache\r\n"
161 "Connection: close\r\n"
162 "Content-Type: text/html\r\n"
163 "\r\n"
164 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
165
166 [HTTP_ERR_408] =
167 "HTTP/1.0 408 Request Time-out\r\n"
168 "Cache-Control: no-cache\r\n"
169 "Connection: close\r\n"
170 "Content-Type: text/html\r\n"
171 "\r\n"
172 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
173
174 [HTTP_ERR_500] =
175 "HTTP/1.0 500 Server Error\r\n"
176 "Cache-Control: no-cache\r\n"
177 "Connection: close\r\n"
178 "Content-Type: text/html\r\n"
179 "\r\n"
180 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
181
182 [HTTP_ERR_502] =
183 "HTTP/1.0 502 Bad Gateway\r\n"
184 "Cache-Control: no-cache\r\n"
185 "Connection: close\r\n"
186 "Content-Type: text/html\r\n"
187 "\r\n"
188 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
189
190 [HTTP_ERR_503] =
191 "HTTP/1.0 503 Service Unavailable\r\n"
192 "Cache-Control: no-cache\r\n"
193 "Connection: close\r\n"
194 "Content-Type: text/html\r\n"
195 "\r\n"
196 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
197
198 [HTTP_ERR_504] =
199 "HTTP/1.0 504 Gateway Time-out\r\n"
200 "Cache-Control: no-cache\r\n"
201 "Connection: close\r\n"
202 "Content-Type: text/html\r\n"
203 "\r\n"
204 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
205
206};
207
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]208/* status codes available for the stats admin page (strictly 4 chars length) */
209const char *stat_status_codes[STAT_STATUS_SIZE] = {
210 [STAT_STATUS_DENY] = "DENY",
211 [STAT_STATUS_DONE] = "DONE",
212 [STAT_STATUS_ERRP] = "ERRP",
213 [STAT_STATUS_EXCD] = "EXCD",
214 [STAT_STATUS_NONE] = "NONE",
215 [STAT_STATUS_PART] = "PART",
216 [STAT_STATUS_UNKN] = "UNKN",
217};
218
219
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]220/* List head of all known action keywords for "http-request" */
221struct http_req_action_kw_list http_req_keywords = {
222 .list = LIST_HEAD_INIT(http_req_keywords.list)
223};
224
225/* List head of all known action keywords for "http-response" */
226struct http_res_action_kw_list http_res_keywords = {
227 .list = LIST_HEAD_INIT(http_res_keywords.list)
228};
229
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]230/* We must put the messages here since GCC cannot initialize consts depending
231 * on strlen().
232 */
233struct chunk http_err_chunks[HTTP_ERR_SIZE];
234
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]235/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
236static struct hdr_ctx static_hdr_ctx;
237
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]238#define FD_SETS_ARE_BITFIELDS
239#ifdef FD_SETS_ARE_BITFIELDS
240/*
241 * This map is used with all the FD_* macros to check whether a particular bit
242 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
243 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
244 * byte should be encoded. Be careful to always pass bytes from 0 to 255
245 * exclusively to the macros.
246 */
247fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
248fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]249fd_set http_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]250
251#else
252#error "Check if your OS uses bitfields for fd_sets"
253#endif
254
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]255static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn);
256
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]257void init_proto_http()
258{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]259 int i;
260 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]261 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]262
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]263 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
264 if (!http_err_msgs[msg]) {
265 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
266 abort();
267 }
268
269 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
270 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
271 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]272
273 /* initialize the log header encoding map : '{|}"#' should be encoded with
274 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
275 * URL encoding only requires '"', '#' to be encoded as well as non-
276 * printable characters above.
277 */
278 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
279 memset(url_encode_map, 0, sizeof(url_encode_map));
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]280 memset(http_encode_map, 0, sizeof(url_encode_map));
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]281 for (i = 0; i < 32; i++) {
282 FD_SET(i, hdr_encode_map);
283 FD_SET(i, url_encode_map);
284 }
285 for (i = 127; i < 256; i++) {
286 FD_SET(i, hdr_encode_map);
287 FD_SET(i, url_encode_map);
288 }
289
290 tmp = "\"#{|}";
291 while (*tmp) {
292 FD_SET(*tmp, hdr_encode_map);
293 tmp++;
294 }
295
296 tmp = "\"#";
297 while (*tmp) {
298 FD_SET(*tmp, url_encode_map);
299 tmp++;
300 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]301
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]302 /* initialize the http header encoding map. The draft httpbis define the
303 * header content as:
304 *
305 * HTTP-message = start-line
306 * *( header-field CRLF )
307 * CRLF
308 * [ message-body ]
309 * header-field = field-name ":" OWS field-value OWS
310 * field-value = *( field-content / obs-fold )
311 * field-content = field-vchar [ 1*( SP / HTAB ) field-vchar ]
312 * obs-fold = CRLF 1*( SP / HTAB )
313 * field-vchar = VCHAR / obs-text
314 * VCHAR = %x21-7E
315 * obs-text = %x80-FF
316 *
317 * All the chars are encoded except "VCHAR", "obs-text", SP and HTAB.
318 * The encoded chars are form 0x00 to 0x08, 0x0a to 0x1f and 0x7f. The
319 * "obs-fold" is volontary forgotten because haproxy remove this.
320 */
321 memset(http_encode_map, 0, sizeof(http_encode_map));
322 for (i = 0x00; i <= 0x08; i++)
323 FD_SET(i, http_encode_map);
324 for (i = 0x0a; i <= 0x1f; i++)
325 FD_SET(i, http_encode_map);
326 FD_SET(0x7f, http_encode_map);
327
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]328 /* memory allocations */
329 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]330 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]331}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]332
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]333/*
334 * We have 26 list of methods (1 per first letter), each of which can have
335 * up to 3 entries (2 valid, 1 null).
336 */
337struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]338 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]339 int len;
340 const char text[8];
341};
342
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]343const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]344 ['C' - 'A'] = {
345 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
346 },
347 ['D' - 'A'] = {
348 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
349 },
350 ['G' - 'A'] = {
351 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
352 },
353 ['H' - 'A'] = {
354 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
355 },
356 ['P' - 'A'] = {
357 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
358 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
359 },
360 ['T' - 'A'] = {
361 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
362 },
363 /* rest is empty like this :
364 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
365 */
366};
367
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]368const struct http_method_name http_known_methods[HTTP_METH_OTHER] = {
369 [HTTP_METH_NONE] = { "", 0 },
370 [HTTP_METH_OPTIONS] = { "OPTIONS", 7 },
371 [HTTP_METH_GET] = { "GET", 3 },
372 [HTTP_METH_HEAD] = { "HEAD", 4 },
373 [HTTP_METH_POST] = { "POST", 4 },
374 [HTTP_METH_PUT] = { "PUT", 3 },
375 [HTTP_METH_DELETE] = { "DELETE", 6 },
376 [HTTP_METH_TRACE] = { "TRACE", 5 },
377 [HTTP_METH_CONNECT] = { "CONNECT", 7 },
378};
379
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]380/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]381 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]382 * RFC2616 for those chars.
383 */
384
385const char http_is_spht[256] = {
386 [' '] = 1, ['\t'] = 1,
387};
388
389const char http_is_crlf[256] = {
390 ['\r'] = 1, ['\n'] = 1,
391};
392
393const char http_is_lws[256] = {
394 [' '] = 1, ['\t'] = 1,
395 ['\r'] = 1, ['\n'] = 1,
396};
397
398const char http_is_sep[256] = {
399 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
400 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
401 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
402 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
403 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
404};
405
406const char http_is_ctl[256] = {
407 [0 ... 31] = 1,
408 [127] = 1,
409};
410
411/*
412 * A token is any ASCII char that is neither a separator nor a CTL char.
413 * Do not overwrite values in assignment since gcc-2.95 will not handle
414 * them correctly. Instead, define every non-CTL char's status.
415 */
416const char http_is_token[256] = {
417 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
418 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
419 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
420 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
421 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
422 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
423 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
424 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
425 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
426 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
427 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
428 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
429 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
430 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
431 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
432 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
433 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
434 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
435 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
436 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
437 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
438 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
439 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
440 ['|'] = 1, ['}'] = 0, ['~'] = 1,
441};
442
443
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]444/*
445 * An http ver_token is any ASCII which can be found in an HTTP version,
446 * which includes 'H', 'T', 'P', '/', '.' and any digit.
447 */
448const char http_is_ver_token[256] = {
449 ['.'] = 1, ['/'] = 1,
450 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
451 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
452 ['H'] = 1, ['P'] = 1, ['T'] = 1,
453};
454
455
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]456/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]457 * Adds a header and its CRLF at the tail of the message's buffer, just before
458 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]459 * The header is also automatically added to the index <hdr_idx>, and the end
460 * of headers is automatically adjusted. The number of bytes added is returned
461 * on success, otherwise <0 is returned indicating an error.
462 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]463int http_header_add_tail(struct http_msg *msg, struct hdr_idx *hdr_idx, const char *text)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]464{
465 int bytes, len;
466
467 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]468 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]469 if (!bytes)
470 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]471 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]472 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
473}
474
475/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]476 * Adds a header and its CRLF at the tail of the message's buffer, just before
477 * the last CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]478 * the buffer is only opened and the space reserved, but nothing is copied.
479 * The header is also automatically added to the index <hdr_idx>, and the end
480 * of headers is automatically adjusted. The number of bytes added is returned
481 * on success, otherwise <0 is returned indicating an error.
482 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]483int http_header_add_tail2(struct http_msg *msg,
484 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]485{
486 int bytes;
487
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]488 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]489 if (!bytes)
490 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]491 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]492 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
493}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]494
495/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]496 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
497 * If so, returns the position of the first non-space character relative to
498 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
499 * to return a pointer to the place after the first space. Returns 0 if the
500 * header name does not match. Checks are case-insensitive.
501 */
502int http_header_match2(const char *hdr, const char *end,
503 const char *name, int len)
504{
505 const char *val;
506
507 if (hdr + len >= end)
508 return 0;
509 if (hdr[len] != ':')
510 return 0;
511 if (strncasecmp(hdr, name, len) != 0)
512 return 0;
513 val = hdr + len + 1;
514 while (val < end && HTTP_IS_SPHT(*val))
515 val++;
516 if ((val >= end) && (len + 2 <= end - hdr))
517 return len + 2; /* we may replace starting from second space */
518 return val - hdr;
519}
520
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]521/* Find the first or next occurrence of header <name> in message buffer <sol>
522 * using headers index <idx>, and return it in the <ctx> structure. This
523 * structure holds everything necessary to use the header and find next
524 * occurrence. If its <idx> member is 0, the header is searched from the
525 * beginning. Otherwise, the next occurrence is returned. The function returns
526 * 1 when it finds a value, and 0 when there is no more. It is very similar to
527 * http_find_header2() except that it is designed to work with full-line headers
528 * whose comma is not a delimiter but is part of the syntax. As a special case,
529 * if ctx->val is NULL when searching for a new values of a header, the current
530 * header is rescanned. This allows rescanning after a header deletion.
531 */
532int http_find_full_header2(const char *name, int len,
533 char *sol, struct hdr_idx *idx,
534 struct hdr_ctx *ctx)
535{
536 char *eol, *sov;
537 int cur_idx, old_idx;
538
539 cur_idx = ctx->idx;
540 if (cur_idx) {
541 /* We have previously returned a header, let's search another one */
542 sol = ctx->line;
543 eol = sol + idx->v[cur_idx].len;
544 goto next_hdr;
545 }
546
547 /* first request for this header */
548 sol += hdr_idx_first_pos(idx);
549 old_idx = 0;
550 cur_idx = hdr_idx_first_idx(idx);
551 while (cur_idx) {
552 eol = sol + idx->v[cur_idx].len;
553
554 if (len == 0) {
555 /* No argument was passed, we want any header.
556 * To achieve this, we simply build a fake request. */
557 while (sol + len < eol && sol[len] != ':')
558 len++;
559 name = sol;
560 }
561
562 if ((len < eol - sol) &&
563 (sol[len] == ':') &&
564 (strncasecmp(sol, name, len) == 0)) {
565 ctx->del = len;
566 sov = sol + len + 1;
567 while (sov < eol && http_is_lws[(unsigned char)*sov])
568 sov++;
569
570 ctx->line = sol;
571 ctx->prev = old_idx;
572 ctx->idx = cur_idx;
573 ctx->val = sov - sol;
574 ctx->tws = 0;
575 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
576 eol--;
577 ctx->tws++;
578 }
579 ctx->vlen = eol - sov;
580 return 1;
581 }
582 next_hdr:
583 sol = eol + idx->v[cur_idx].cr + 1;
584 old_idx = cur_idx;
585 cur_idx = idx->v[cur_idx].next;
586 }
587 return 0;
588}
589
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]590/* Find the end of the header value contained between <s> and <e>. See RFC2616,
591 * par 2.2 for more information. Note that it requires a valid header to return
592 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]593 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]594char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]595{
596 int quoted, qdpair;
597
598 quoted = qdpair = 0;
599 for (; s < e; s++) {
600 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]601 else if (quoted) {
602 if (*s == '\\') qdpair = 1;
603 else if (*s == '"') quoted = 0;
604 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]605 else if (*s == '"') quoted = 1;
606 else if (*s == ',') return s;
607 }
608 return s;
609}
610
611/* Find the first or next occurrence of header <name> in message buffer <sol>
612 * using headers index <idx>, and return it in the <ctx> structure. This
613 * structure holds everything necessary to use the header and find next
614 * occurrence. If its <idx> member is 0, the header is searched from the
615 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]616 * 1 when it finds a value, and 0 when there is no more. It is designed to work
617 * with headers defined as comma-separated lists. As a special case, if ctx->val
618 * is NULL when searching for a new values of a header, the current header is
619 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]620 */
621int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]622 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]623 struct hdr_ctx *ctx)
624{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]625 char *eol, *sov;
626 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]627
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]628 cur_idx = ctx->idx;
629 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]630 /* We have previously returned a value, let's search
631 * another one on the same line.
632 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]633 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]634 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]635 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]636 eol = sol + idx->v[cur_idx].len;
637
638 if (sov >= eol)
639 /* no more values in this header */
640 goto next_hdr;
641
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]642 /* values remaining for this header, skip the comma but save it
643 * for later use (eg: for header deletion).
644 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]645 sov++;
646 while (sov < eol && http_is_lws[(unsigned char)*sov])
647 sov++;
648
649 goto return_hdr;
650 }
651
652 /* first request for this header */
653 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]654 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]655 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]656 while (cur_idx) {
657 eol = sol + idx->v[cur_idx].len;
658
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]659 if (len == 0) {
660 /* No argument was passed, we want any header.
661 * To achieve this, we simply build a fake request. */
662 while (sol + len < eol && sol[len] != ':')
663 len++;
664 name = sol;
665 }
666
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]667 if ((len < eol - sol) &&
668 (sol[len] == ':') &&
669 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]670 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]671 sov = sol + len + 1;
672 while (sov < eol && http_is_lws[(unsigned char)*sov])
673 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]674
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]675 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]676 ctx->prev = old_idx;
677 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]678 ctx->idx = cur_idx;
679 ctx->val = sov - sol;
680
681 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]682 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]683 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]684 eol--;
685 ctx->tws++;
686 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]687 ctx->vlen = eol - sov;
688 return 1;
689 }
690 next_hdr:
691 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]692 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]693 cur_idx = idx->v[cur_idx].next;
694 }
695 return 0;
696}
697
698int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]699 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]700 struct hdr_ctx *ctx)
701{
702 return http_find_header2(name, strlen(name), sol, idx, ctx);
703}
704
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]705/* Remove one value of a header. This only works on a <ctx> returned by one of
706 * the http_find_header functions. The value is removed, as well as surrounding
707 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]708 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]709 * message <msg>. The new index is returned. If it is zero, it means there is
710 * no more header, so any processing may stop. The ctx is always left in a form
711 * that can be handled by http_find_header2() to find next occurrence.
712 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]713int http_remove_header2(struct http_msg *msg, struct hdr_idx *idx, struct hdr_ctx *ctx)
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]714{
715 int cur_idx = ctx->idx;
716 char *sol = ctx->line;
717 struct hdr_idx_elem *hdr;
718 int delta, skip_comma;
719
720 if (!cur_idx)
721 return 0;
722
723 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]724 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]725 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]726 delta = buffer_replace2(msg->chn->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]727 http_msg_move_end(msg, delta);
728 idx->used--;
729 hdr->len = 0; /* unused entry */
730 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]731 if (idx->tail == ctx->idx)
732 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]733 ctx->idx = ctx->prev; /* walk back to the end of previous header */
Willy Tarreau7c1c2172015-01-07 17:23:50 +0100[diff] [blame]734 ctx->line -= idx->v[ctx->idx].len + idx->v[ctx->idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]735 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]736 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]737 return ctx->idx;
738 }
739
740 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]741 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
742 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]743 */
744
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]745 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]746 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]747 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]748 NULL, 0);
749 hdr->len += delta;
750 http_msg_move_end(msg, delta);
751 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]752 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]753 return ctx->idx;
754}
755
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]756/* This function handles a server error at the stream interface level. The
757 * stream interface is assumed to be already in a closed state. An optional
758 * message is copied into the input buffer, and an HTTP status code stored.
759 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]760 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]761 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]762static void http_server_error(struct session *s, struct stream_interface *si,
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]763 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]764{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]765 channel_auto_read(si->ob);
766 channel_abort(si->ob);
767 channel_auto_close(si->ob);
768 channel_erase(si->ob);
769 channel_auto_close(si->ib);
770 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]771 if (status > 0 && msg) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]772 s->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]773 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]774 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]775 if (!(s->flags & SN_ERR_MASK))
776 s->flags |= err;
777 if (!(s->flags & SN_FINST_MASK))
778 s->flags |= finst;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]779}
780
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]781/* This function returns the appropriate error location for the given session
782 * and message.
783 */
784
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]785struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]786{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]787 if (s->be->errmsg[msgnum].str)
788 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]789 else if (s->fe->errmsg[msgnum].str)
790 return &s->fe->errmsg[msgnum];
791 else
792 return &http_err_chunks[msgnum];
793}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]794
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]795/*
796 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
797 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
798 */
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]799enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]800{
801 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]802 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]803
804 m = ((unsigned)*str - 'A');
805
806 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]807 for (h = http_methods[m]; h->len > 0; h++) {
808 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]809 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]810 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]811 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]812 };
813 return HTTP_METH_OTHER;
814 }
815 return HTTP_METH_NONE;
816
817}
818
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]819/* Parse the URI from the given transaction (which is assumed to be in request
820 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
821 * It is returned otherwise.
822 */
823static char *
824http_get_path(struct http_txn *txn)
825{
826 char *ptr, *end;
827
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]828 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]829 end = ptr + txn->req.sl.rq.u_l;
830
831 if (ptr >= end)
832 return NULL;
833
834 /* RFC2616, par. 5.1.2 :
835 * Request-URI = "*" | absuri | abspath | authority
836 */
837
838 if (*ptr == '*')
839 return NULL;
840
841 if (isalpha((unsigned char)*ptr)) {
842 /* this is a scheme as described by RFC3986, par. 3.1 */
843 ptr++;
844 while (ptr < end &&
845 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
846 ptr++;
847 /* skip '://' */
848 if (ptr == end || *ptr++ != ':')
849 return NULL;
850 if (ptr == end || *ptr++ != '/')
851 return NULL;
852 if (ptr == end || *ptr++ != '/')
853 return NULL;
854 }
855 /* skip [user[:passwd]@]host[:[port]] */
856
857 while (ptr < end && *ptr != '/')
858 ptr++;
859
860 if (ptr == end)
861 return NULL;
862
863 /* OK, we got the '/' ! */
864 return ptr;
865}
866
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]867/* Parse the URI from the given string and look for the "/" beginning the PATH.
868 * If not found, return NULL. It is returned otherwise.
869 */
870static char *
871http_get_path_from_string(char *str)
872{
873 char *ptr = str;
874
875 /* RFC2616, par. 5.1.2 :
876 * Request-URI = "*" | absuri | abspath | authority
877 */
878
879 if (*ptr == '*')
880 return NULL;
881
882 if (isalpha((unsigned char)*ptr)) {
883 /* this is a scheme as described by RFC3986, par. 3.1 */
884 ptr++;
885 while (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.')
886 ptr++;
887 /* skip '://' */
888 if (*ptr == '\0' || *ptr++ != ':')
889 return NULL;
890 if (*ptr == '\0' || *ptr++ != '/')
891 return NULL;
892 if (*ptr == '\0' || *ptr++ != '/')
893 return NULL;
894 }
895 /* skip [user[:passwd]@]host[:[port]] */
896
897 while (*ptr != '\0' && *ptr != ' ' && *ptr != '/')
898 ptr++;
899
900 if (*ptr == '\0' || *ptr == ' ')
901 return NULL;
902
903 /* OK, we got the '/' ! */
904 return ptr;
905}
906
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]907/* Returns a 302 for a redirectable request that reaches a server working in
908 * in redirect mode. This may only be called just after the stream interface
909 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
910 * follow normal proxy processing. NOTE: this function is designed to support
911 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]912 */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]913void http_perform_server_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]914{
915 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]916 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]917 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]918 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]919
920 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]921 trash.len = strlen(HTTP_302);
922 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]923
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]924 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]925
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]926 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]927 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]928 return;
929
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]930 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]931 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]932 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
933 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]934 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]935
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]936 /* 3: add the request URI. Since it was already forwarded, we need
937 * to temporarily rewind the buffer.
938 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]939 txn = &s->txn;
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]940 b_rew(s->req->buf, rewind = http_hdr_rewind(&txn->req));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]941
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]942 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]943 len = buffer_count(s->req->buf, path, b_ptr(s->req->buf, txn->req.sl.rq.u + txn->req.sl.rq.u_l));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]944
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]945 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]946
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]947 if (!path)
948 return;
949
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]950 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]951 return;
952
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]953 memcpy(trash.str + trash.len, path, len);
954 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]955
956 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]957 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
958 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]959 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]960 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
961 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]962 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]963
964 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]965 si_shutr(si);
966 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]967 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]968 si->state = SI_ST_CLO;
969
970 /* send the message */
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]971 http_server_error(s, si, SN_ERR_LOCAL, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]972
973 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]974 srv_inc_sess_ctr(srv);
Bhaskar Maddalaa20cb852014-02-03 16:26:46 -0500[diff] [blame]975 srv_set_sess_last(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]976}
977
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]978/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]979 * that the server side is closed. Note that err_type is actually a
980 * bitmask, where almost only aborts may be cumulated with other
981 * values. We consider that aborted operations are more important
982 * than timeouts or errors due to the fact that nobody else in the
983 * logs might explain incomplete retries. All others should avoid
984 * being cumulated. It should normally not be possible to have multiple
985 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]986 * Note that connection errors appearing on the second request of a keep-alive
987 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]988 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]989void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]990{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]991 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]992
993 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]994 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]995 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]996 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]997 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]998 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
999 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1000 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1001 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1002 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1003 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1004 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1005 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1006 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1007 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1008 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
1009 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1010 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1011 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau36346242014-02-24 18:26:30 +0100[diff] [blame]1012 503, (s->flags & SN_SRV_REUSED) ? NULL :
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1013 http_error_message(s, HTTP_ERR_503));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]1014 else if (err_type & SI_ET_CONN_RES)
1015 http_server_error(s, si, SN_ERR_RESOURCE, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]1016 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
1017 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1018 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]1019 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]1020 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]1021}
1022
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1023extern const char sess_term_cond[8];
1024extern const char sess_fin_state[8];
1025extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]1026struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]1027struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]1028struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1029
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1030/*
1031 * Capture headers from message starting at <som> according to header list
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1032 * <cap_hdr>, and fill the <cap> pointers appropriately.
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1033 */
1034void capture_headers(char *som, struct hdr_idx *idx,
1035 char **cap, struct cap_hdr *cap_hdr)
1036{
1037 char *eol, *sol, *col, *sov;
1038 int cur_idx;
1039 struct cap_hdr *h;
1040 int len;
1041
1042 sol = som + hdr_idx_first_pos(idx);
1043 cur_idx = hdr_idx_first_idx(idx);
1044
1045 while (cur_idx) {
1046 eol = sol + idx->v[cur_idx].len;
1047
1048 col = sol;
1049 while (col < eol && *col != ':')
1050 col++;
1051
1052 sov = col + 1;
1053 while (sov < eol && http_is_lws[(unsigned char)*sov])
1054 sov++;
1055
1056 for (h = cap_hdr; h; h = h->next) {
Willy Tarreau54da8db2014-06-13 16:11:48 +0200[diff] [blame]1057 if (h->namelen && (h->namelen == col - sol) &&
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1058 (strncasecmp(sol, h->name, h->namelen) == 0)) {
1059 if (cap[h->index] == NULL)
1060 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]1061 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]1062
1063 if (cap[h->index] == NULL) {
1064 Alert("HTTP capture : out of memory.\n");
1065 continue;
1066 }
1067
1068 len = eol - sov;
1069 if (len > h->len)
1070 len = h->len;
1071
1072 memcpy(cap[h->index], sov, len);
1073 cap[h->index][len]=0;
1074 }
1075 }
1076 sol = eol + idx->v[cur_idx].cr + 1;
1077 cur_idx = idx->v[cur_idx].next;
1078 }
1079}
1080
1081
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1082/* either we find an LF at <ptr> or we jump to <bad>.
1083 */
1084#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1085
1086/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1087 * otherwise to <http_msg_ood> with <state> set to <st>.
1088 */
1089#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1090 ptr++; \
1091 if (likely(ptr < end)) \
1092 goto good; \
1093 else { \
1094 state = (st); \
1095 goto http_msg_ood; \
1096 } \
1097 } while (0)
1098
1099
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1100/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1101 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1102 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1103 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1104 * will give undefined results.
1105 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1106 * and that msg->sol points to the beginning of the response.
1107 * If a complete line is found (which implies that at least one CR or LF is
1108 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1109 * returned indicating an incomplete line (which does not mean that parts have
1110 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1111 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1112 * upon next call.
1113 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1114 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1115 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1116 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1117 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1118 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1119const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1120 enum ht_state state, const char *ptr, const char *end,
1121 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1122{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1123 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1124
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1125 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1126 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1127 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1128 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1129 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1130
1131 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1132 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1133 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1134 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1135 state = HTTP_MSG_ERROR;
1136 break;
1137
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1138 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1139 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1140 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1141 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1142 goto http_msg_rpcode;
1143 }
1144 if (likely(HTTP_IS_SPHT(*ptr)))
1145 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1146 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1147 state = HTTP_MSG_ERROR;
1148 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1149
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1150 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1151 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1152 if (likely(!HTTP_IS_LWS(*ptr)))
1153 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1154
1155 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1156 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1157 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1158 }
1159
1160 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1161 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1162 http_msg_rsp_reason:
1163 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1164 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1165 msg->sl.st.r_l = 0;
1166 goto http_msg_rpline_eol;
1167
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1168 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1169 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1170 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1171 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1172 goto http_msg_rpreason;
1173 }
1174 if (likely(HTTP_IS_SPHT(*ptr)))
1175 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1176 /* so it's a CR/LF, so there is no reason phrase */
1177 goto http_msg_rsp_reason;
1178
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1179 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1180 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1181 if (likely(!HTTP_IS_CRLF(*ptr)))
1182 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1183 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1184 http_msg_rpline_eol:
1185 /* We have seen the end of line. Note that we do not
1186 * necessarily have the \n yet, but at least we know that we
1187 * have EITHER \r OR \n, otherwise the response would not be
1188 * complete. We can then record the response length and return
1189 * to the caller which will be able to register it.
1190 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1191 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1192 return ptr;
1193
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1194 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1195#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1196 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1197 exit(1);
1198#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1199 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1200 }
1201
1202 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1203 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1204 if (ret_state)
1205 *ret_state = state;
1206 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1207 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1208 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1209}
1210
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1211/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1212 * This function parses a request line between <ptr> and <end>, starting with
1213 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1214 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1215 * will give undefined results.
1216 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1217 * and that msg->sol points to the beginning of the request.
1218 * If a complete line is found (which implies that at least one CR or LF is
1219 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1220 * returned indicating an incomplete line (which does not mean that parts have
1221 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1222 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1223 * upon next call.
1224 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1225 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1226 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1227 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1228 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1229 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1230const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1231 enum ht_state state, const char *ptr, const char *end,
1232 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1233{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1234 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1235
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1236 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1237 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1238 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1239 if (likely(HTTP_IS_TOKEN(*ptr)))
1240 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1241
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1242 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1243 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1244 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1245 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1246
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1247 if (likely(HTTP_IS_CRLF(*ptr))) {
1248 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1249 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1250 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1251 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1252 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1253 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1254 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1255 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1256 msg->sl.rq.v_l = 0;
1257 goto http_msg_rqline_eol;
1258 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1259 state = HTTP_MSG_ERROR;
1260 break;
1261
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1262 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1263 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1264 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1265 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1266 goto http_msg_rquri;
1267 }
1268 if (likely(HTTP_IS_SPHT(*ptr)))
1269 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1270 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1271 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1272
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1273 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1274 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1275 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1276 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1277
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1278 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1279 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1280 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1281 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1282
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1283 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1284 /* non-ASCII chars are forbidden unless option
1285 * accept-invalid-http-request is enabled in the frontend.
1286 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1287 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1288 if (msg->err_pos < -1)
1289 goto invalid_char;
1290 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1291 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1292 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1293 }
1294
1295 if (likely(HTTP_IS_CRLF(*ptr))) {
1296 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1297 goto http_msg_req09_uri_e;
1298 }
1299
1300 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1301 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1302 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1303 state = HTTP_MSG_ERROR;
1304 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1305
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1306 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1307 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1308 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1309 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1310 goto http_msg_rqver;
1311 }
1312 if (likely(HTTP_IS_SPHT(*ptr)))
1313 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1314 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1315 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1316
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1317 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1318 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1319 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1320 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1321
1322 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1323 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1324 http_msg_rqline_eol:
1325 /* We have seen the end of line. Note that we do not
1326 * necessarily have the \n yet, but at least we know that we
1327 * have EITHER \r OR \n, otherwise the request would not be
1328 * complete. We can then record the request length and return
1329 * to the caller which will be able to register it.
1330 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1331 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1332 return ptr;
1333 }
1334
1335 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1336 state = HTTP_MSG_ERROR;
1337 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1338
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1339 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1340#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1341 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1342 exit(1);
1343#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1344 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1345 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1346
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1347 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1348 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1349 if (ret_state)
1350 *ret_state = state;
1351 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1352 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1353 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1354}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1355
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1356/*
1357 * Returns the data from Authorization header. Function may be called more
1358 * than once so data is stored in txn->auth_data. When no header is found
1359 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
Thierry FOURNIER98d96952014-01-23 12:13:02 +0100[diff] [blame]1360 * searching again for something we are unable to find anyway. However, if
1361 * the result if valid, the cache is not reused because we would risk to
1362 * have the credentials overwritten by another session in parallel.
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1363 */
1364
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]1365/* This bufffer is initialized in the file 'src/haproxy.c'. This length is
1366 * set according to global.tune.bufsize.
1367 */
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1368char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1369
1370int
1371get_http_auth(struct session *s)
1372{
1373
1374 struct http_txn *txn = &s->txn;
1375 struct chunk auth_method;
1376 struct hdr_ctx ctx;
1377 char *h, *p;
1378 int len;
1379
1380#ifdef DEBUG_AUTH
1381 printf("Auth for session %p: %d\n", s, txn->auth.method);
1382#endif
1383
1384 if (txn->auth.method == HTTP_AUTH_WRONG)
1385 return 0;
1386
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1387 txn->auth.method = HTTP_AUTH_WRONG;
1388
1389 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1390
1391 if (txn->flags & TX_USE_PX_CONN) {
1392 h = "Proxy-Authorization";
1393 len = strlen(h);
1394 } else {
1395 h = "Authorization";
1396 len = strlen(h);
1397 }
1398
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1399 if (!http_find_header2(h, len, s->req->buf->p, &txn->hdr_idx, &ctx))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1400 return 0;
1401
1402 h = ctx.line + ctx.val;
1403
1404 p = memchr(h, ' ', ctx.vlen);
1405 if (!p || p == h)
1406 return 0;
1407
1408 chunk_initlen(&auth_method, h, 0, p-h);
1409 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1410
1411 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1412
1413 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1414 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1415
1416 if (len < 0)
1417 return 0;
1418
1419
1420 get_http_auth_buff[len] = '\0';
1421
1422 p = strchr(get_http_auth_buff, ':');
1423
1424 if (!p)
1425 return 0;
1426
1427 txn->auth.user = get_http_auth_buff;
1428 *p = '\0';
1429 txn->auth.pass = p+1;
1430
1431 txn->auth.method = HTTP_AUTH_BASIC;
1432 return 1;
1433 }
1434
1435 return 0;
1436}
1437
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1438
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1439/*
1440 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1441 * depending on the initial msg->msg_state. The caller is responsible for
1442 * ensuring that the message does not wrap. The function can be preempted
1443 * everywhere when data are missing and recalled at the exact same location
1444 * with no information loss. The message may even be realigned between two
1445 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1446 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1447 * fields. Note that msg->sol will be initialized after completing the first
1448 * state, so that none of the msg pointers has to be initialized prior to the
1449 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1450 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1451void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1452{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1453 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1454 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1455 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1456
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1457 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1458 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1459 ptr = buf->p + msg->next;
1460 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1461
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1462 if (unlikely(ptr >= end))
1463 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1464
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1465 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1466 /*
1467 * First, states that are specific to the response only.
1468 * We check them first so that request and headers are
1469 * closer to each other (accessed more often).
1470 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1471 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1472 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1473 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1474 /* we have a start of message, but we have to check
1475 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1476 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1477 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1478 if (unlikely(ptr != buf->p)) {
1479 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1480 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1481 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1482 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1483 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1484 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1485 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1486 hdr_idx_init(idx);
1487 state = HTTP_MSG_RPVER;
1488 goto http_msg_rpver;
1489 }
1490
1491 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1492 goto http_msg_invalid;
1493
1494 if (unlikely(*ptr == '\n'))
1495 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1496 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1497 /* stop here */
1498
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1499 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1500 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1501 EXPECT_LF_HERE(ptr, http_msg_invalid);
1502 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1503 /* stop here */
1504
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1505 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1506 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1507 case HTTP_MSG_RPVER_SP:
1508 case HTTP_MSG_RPCODE:
1509 case HTTP_MSG_RPCODE_SP:
1510 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1511 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1512 state, ptr, end,
1513 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1514 if (unlikely(!ptr))
1515 return;
1516
1517 /* we have a full response and we know that we have either a CR
1518 * or an LF at <ptr>.
1519 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1520 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1521
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1522 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1523 if (likely(*ptr == '\r'))
1524 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1525 goto http_msg_rpline_end;
1526
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1527 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1528 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1529 /* msg->sol must point to the first of CR or LF. */
1530 EXPECT_LF_HERE(ptr, http_msg_invalid);
1531 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1532 /* stop here */
1533
1534 /*
1535 * Second, states that are specific to the request only
1536 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1537 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1538 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1539 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1540 /* we have a start of message, but we have to check
1541 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1542 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1543 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1544 if (likely(ptr != buf->p)) {
1545 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1546 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1547 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1548 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1549 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1550 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1551 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1552 state = HTTP_MSG_RQMETH;
1553 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1554 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1555
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1556 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1557 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1558
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1559 if (unlikely(*ptr == '\n'))
1560 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1561 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1562 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1563
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1564 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1565 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1566 EXPECT_LF_HERE(ptr, http_msg_invalid);
1567 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1568 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1569
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1570 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1571 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1572 case HTTP_MSG_RQMETH_SP:
1573 case HTTP_MSG_RQURI:
1574 case HTTP_MSG_RQURI_SP:
1575 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1576 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1577 state, ptr, end,
1578 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1579 if (unlikely(!ptr))
1580 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1581
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1582 /* we have a full request and we know that we have either a CR
1583 * or an LF at <ptr>.
1584 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1585 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1586
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1587 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1588 if (likely(*ptr == '\r'))
1589 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1590 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1591
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1592 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1593 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1594 /* check for HTTP/0.9 request : no version information available.
1595 * msg->sol must point to the first of CR or LF.
1596 */
1597 if (unlikely(msg->sl.rq.v_l == 0))
1598 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1599
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1600 EXPECT_LF_HERE(ptr, http_msg_invalid);
1601 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1602 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1603
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1604 /*
1605 * Common states below
1606 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1607 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1608 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1609 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1610 if (likely(!HTTP_IS_CRLF(*ptr))) {
1611 goto http_msg_hdr_name;
1612 }
1613
1614 if (likely(*ptr == '\r'))
1615 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1616 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1617
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1618 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1619 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1620 /* assumes msg->sol points to the first char */
1621 if (likely(HTTP_IS_TOKEN(*ptr)))
1622 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1623
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1624 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1625 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1626
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1627 if (likely(msg->err_pos < -1) || *ptr == '\n')
1628 goto http_msg_invalid;
1629
1630 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1631 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1632
1633 /* and we still accept this non-token character */
1634 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1635
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1636 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1637 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1638 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1639 if (likely(HTTP_IS_SPHT(*ptr)))
1640 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1641
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1642 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1643 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1644
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1645 if (likely(!HTTP_IS_CRLF(*ptr))) {
1646 goto http_msg_hdr_val;
1647 }
1648
1649 if (likely(*ptr == '\r'))
1650 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1651 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1652
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1653 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1654 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1655 EXPECT_LF_HERE(ptr, http_msg_invalid);
1656 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1657
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1658 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1659 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1660 if (likely(HTTP_IS_SPHT(*ptr))) {
1661 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1662 for (; buf->p + msg->sov < ptr; msg->sov++)
1663 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1664 goto http_msg_hdr_l1_sp;
1665 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1666 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1667 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1668 goto http_msg_complete_header;
1669
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1670 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1671 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1672 /* assumes msg->sol points to the first char, and msg->sov
1673 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1674 */
1675 if (likely(!HTTP_IS_CRLF(*ptr)))
1676 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1677
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1678 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1679 /* Note: we could also copy eol into ->eoh so that we have the
1680 * real header end in case it ends with lots of LWS, but is this
1681 * really needed ?
1682 */
1683 if (likely(*ptr == '\r'))
1684 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1685 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1686
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1687 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1688 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1689 EXPECT_LF_HERE(ptr, http_msg_invalid);
1690 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1691
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1692 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1693 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1694 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1695 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1696 for (; buf->p + msg->eol < ptr; msg->eol++)
1697 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1698 goto http_msg_hdr_val;
1699 }
1700 http_msg_complete_header:
1701 /*
1702 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1703 * Assumes msg->sol points to the first char, msg->sov points
1704 * to the first character of the value and msg->eol to the
1705 * first CR or LF so we know how the line ends. We insert last
1706 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1707 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1708 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1709 idx, idx->tail) < 0))
1710 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1711
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1712 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1713 if (likely(!HTTP_IS_CRLF(*ptr))) {
1714 goto http_msg_hdr_name;
1715 }
1716
1717 if (likely(*ptr == '\r'))
1718 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1719 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1720
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1721 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1722 http_msg_last_lf:
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1723 /* Assumes msg->sol points to the first of either CR or LF.
1724 * Sets ->sov and ->next to the total header length, ->eoh to
1725 * the last CRLF, and ->eol to the last CRLF length (1 or 2).
1726 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1727 EXPECT_LF_HERE(ptr, http_msg_invalid);
1728 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1729 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1730 msg->eoh = msg->sol;
1731 msg->sol = 0;
Willy Tarreau0558a022014-03-13 15:48:45 +0100[diff] [blame]1732 msg->eol = msg->sov - msg->eoh;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1733 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1734 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1735
1736 case HTTP_MSG_ERROR:
1737 /* this may only happen if we call http_msg_analyser() twice with an error */
1738 break;
1739
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1740 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1741#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1742 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1743 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1744#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1745 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1746 }
1747 http_msg_ood:
1748 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1749 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1750 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1751 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1752
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1753 http_msg_invalid:
1754 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1755 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1756 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1757 return;
1758}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1759
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1760/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1761 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1762 * nothing is done and 1 is returned.
1763 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1764static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1765{
1766 int delta;
1767 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1768 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1769
1770 if (msg->sl.rq.v_l != 0)
1771 return 1;
1772
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1773 /* RFC 1945 allows only GET for HTTP/0.9 requests */
1774 if (txn->meth != HTTP_METH_GET)
1775 return 0;
1776
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1777 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1778 delta = 0;
1779
1780 if (msg->sl.rq.u_l == 0) {
Apollon Oikonomopoulos25a15222014-04-06 02:46:00 +0300[diff] [blame]1781 /* HTTP/0.9 requests *must* have a request URI, per RFC 1945 */
1782 return 0;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1783 }
1784 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1785 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1786 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1787 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1788 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1789 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1790 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1791 NULL, NULL);
1792 if (unlikely(!cur_end))
1793 return 0;
1794
1795 /* we have a full HTTP/1.0 request now and we know that
1796 * we have either a CR or an LF at <ptr>.
1797 */
1798 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1799 return 1;
1800}
1801
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1802/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1803 * and "keep-alive" values. If we already know that some headers may safely
1804 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1805 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1806 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1807 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1808 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1809 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1810 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1811 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1812 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1813void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1814{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1815 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1816 const char *hdr_val = "Connection";
1817 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1818
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1819 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1820 return;
1821
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1822 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1823 hdr_val = "Proxy-Connection";
1824 hdr_len = 16;
1825 }
1826
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1827 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1828 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1829 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1830 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1831 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1832 if (to_del & 2)
1833 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1834 else
1835 txn->flags |= TX_CON_KAL_SET;
1836 }
1837 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1838 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1839 if (to_del & 1)
1840 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1841 else
1842 txn->flags |= TX_CON_CLO_SET;
1843 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1844 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1845 txn->flags |= TX_HDR_CONN_UPG;
1846 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1847 }
1848
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1849 txn->flags |= TX_HDR_CONN_PRS;
1850 return;
1851}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1852
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1853/* Apply desired changes on the Connection: header. Values may be removed and/or
1854 * added depending on the <wanted> flags, which are exclusively composed of
1855 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1856 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1857 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1858void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1859{
1860 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1861 const char *hdr_val = "Connection";
1862 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1863
1864 ctx.idx = 0;
1865
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1866
1867 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1868 hdr_val = "Proxy-Connection";
1869 hdr_len = 16;
1870 }
1871
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1872 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1873 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1874 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1875 if (wanted & TX_CON_KAL_SET)
1876 txn->flags |= TX_CON_KAL_SET;
1877 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1878 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1879 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1880 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1881 if (wanted & TX_CON_CLO_SET)
1882 txn->flags |= TX_CON_CLO_SET;
1883 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1884 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1885 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1886 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1887
1888 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1889 return;
1890
1891 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1892 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1893 hdr_val = "Connection: close";
1894 hdr_len = 17;
1895 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1896 hdr_val = "Proxy-Connection: close";
1897 hdr_len = 23;
1898 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1899 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1900 }
1901
1902 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1903 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1904 hdr_val = "Connection: keep-alive";
1905 hdr_len = 22;
1906 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1907 hdr_val = "Proxy-Connection: keep-alive";
1908 hdr_len = 28;
1909 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1910 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1911 }
1912 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1913}
1914
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]1915/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to
1916 * the first byte of data after the chunk size, so that we know we can forward
1917 * exactly msg->next bytes. msg->sol contains the exact number of bytes forming
1918 * the chunk size. That way it is always possible to differentiate between the
1919 * start of the body and the start of the data.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1920 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1921 * Note: this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1922 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1923static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1924{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1925 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1926 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1927 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1928 const char *end = buf->data + buf->size;
1929 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1930 unsigned int chunk = 0;
1931
1932 /* The chunk size is in the following form, though we are only
1933 * interested in the size and CRLF :
1934 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1935 */
1936 while (1) {
1937 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1938 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1939 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1940 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1941 if (c < 0) /* not a hex digit anymore */
1942 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1943 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1944 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1945 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1946 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1947 chunk = (chunk << 4) + c;
1948 }
1949
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1950 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1951 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1952 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1953
1954 while (http_is_spht[(unsigned char)*ptr]) {
1955 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1956 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1957 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1958 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1959 }
1960
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1961 /* Up to there, we know that at least one byte is present at *ptr. Check
1962 * for the end of chunk size.
1963 */
1964 while (1) {
1965 if (likely(HTTP_IS_CRLF(*ptr))) {
1966 /* we now have a CR or an LF at ptr */
1967 if (likely(*ptr == '\r')) {
1968 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1969 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1970 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1971 return 0;
1972 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1973
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1974 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1975 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1976 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1977 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1978 /* done */
1979 break;
1980 }
1981 else if (*ptr == ';') {
1982 /* chunk extension, ends at next CRLF */
1983 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1984 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1985 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1986 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1987
1988 while (!HTTP_IS_CRLF(*ptr)) {
1989 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1990 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1991 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1992 return 0;
1993 }
1994 /* we have a CRLF now, loop above */
1995 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1996 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1997 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1998 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1999 }
2000
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2001 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2002 * which may or may not be present. We save that into ->next,
2003 * and the number of bytes parsed into msg->sol.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2004 */
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2005 msg->sol = ptr - ptr_old;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2006 if (unlikely(ptr < ptr_old))
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2007 msg->sol += buf->size;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2008 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2009 msg->chunk_len = chunk;
2010 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2011 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2012 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2013 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2014 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2015 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]2016}
2017
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2018/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2019 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2020 * the trailers is found, it is automatically scheduled to be forwarded,
2021 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
2022 * If not enough data are available, the function does not change anything
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2023 * except maybe msg->next if it could parse some lines, and returns zero.
2024 * If a parse error is encountered, the function returns < 0 and does not
2025 * change anything except maybe msg->next. Note that the message must
2026 * already be in HTTP_MSG_TRAILERS state before calling this function,
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2027 * which implies that all non-trailers data have already been scheduled for
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2028 * forwarding, and that msg->next exactly matches the length of trailers
2029 * already parsed and not forwarded. It is also important to note that this
2030 * function is designed to be able to parse wrapped headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2031 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2032static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2033{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2034 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2035
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2036 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2037 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2038 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2039 const char *ptr = b_ptr(buf, msg->next);
2040 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2041 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2042
2043 /* scan current line and stop at LF or CRLF */
2044 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]2045 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2046 return 0;
2047
2048 if (*ptr == '\n') {
2049 if (!p1)
2050 p1 = ptr;
2051 p2 = ptr;
2052 break;
2053 }
2054
2055 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2056 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2057 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2058 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2059 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2060 p1 = ptr;
2061 }
2062
2063 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2064 if (ptr >= buf->data + buf->size)
2065 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2066 }
2067
2068 /* after LF; point to beginning of next line */
2069 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2070 if (p2 >= buf->data + buf->size)
2071 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2072
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2073 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2074 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2075 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2076
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2077 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2078 /* LF/CRLF at beginning of line => end of trailers at p2.
2079 * Everything was scheduled for forwarding, there's nothing
2080 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]2081 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2082 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2083 msg->msg_state = HTTP_MSG_DONE;
2084 return 1;
2085 }
2086 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2087 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2088 }
2089}
2090
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2091/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF
2092 * or a possible LF alone at the end of a chunk. It automatically adjusts
2093 * msg->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2094 * Note that the caller must ensure that ->p points to the first byte to parse.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2095 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
2096 * not enough data are available, the function does not change anything and
2097 * returns zero. If a parse error is encountered, the function returns < 0 and
2098 * does not change anything. Note: this function is designed to parse wrapped
2099 * CRLF at the end of the buffer.
2100 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2101static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2102{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2103 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2104 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2105 int bytes;
2106
2107 /* NB: we'll check data availabilty at the end. It's not a
2108 * problem because whatever we match first will be checked
2109 * against the correct length.
2110 */
2111 bytes = 1;
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2112 ptr = b_ptr(buf, msg->next);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2113 if (*ptr == '\r') {
2114 bytes++;
2115 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2116 if (ptr >= buf->data + buf->size)
2117 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2118 }
2119
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2120 if (msg->next + bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2121 return 0;
2122
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2123 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2124 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2125 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2126 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2127
2128 ptr++;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2129 if (unlikely(ptr >= buf->data + buf->size))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2130 ptr = buf->data;
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]2131 /* Advance ->next to allow the CRLF to be forwarded */
Willy Tarreau0669d7d2014-04-17 11:40:10 +0200[diff] [blame]2132 msg->next += bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2133 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
2134 return 1;
2135}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2136
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2137/* Parses a qvalue and returns it multipled by 1000, from 0 to 1000. If the
2138 * value is larger than 1000, it is bound to 1000. The parser consumes up to
2139 * 1 digit, one dot and 3 digits and stops on the first invalid character.
2140 * Unparsable qvalues return 1000 as "q=1.000".
2141 */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2142int parse_qvalue(const char *qvalue, const char **end)
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2143{
2144 int q = 1000;
2145
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2146 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2147 goto out;
2148 q = (*qvalue++ - '0') * 1000;
2149
2150 if (*qvalue++ != '.')
2151 goto out;
2152
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2153 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2154 goto out;
2155 q += (*qvalue++ - '0') * 100;
2156
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2157 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2158 goto out;
2159 q += (*qvalue++ - '0') * 10;
2160
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]2161 if (!isdigit((unsigned char)*qvalue))
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2162 goto out;
2163 q += (*qvalue++ - '0') * 1;
2164 out:
2165 if (q > 1000)
2166 q = 1000;
Willy Tarreau38b3aa52014-04-22 23:32:05 +0200[diff] [blame]2167 if (end)
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2168 *end = qvalue;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2169 return q;
2170}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2171
2172/*
2173 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2174 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2175int select_compression_request_header(struct session *s, struct buffer *req)
2176{
2177 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2178 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2179 struct hdr_ctx ctx;
2180 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2181 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2182
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2183 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
2184 * unless they are known good (MSIE 6 with XP SP2, or MSIE 7 and later).
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2185 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
2186 */
2187 ctx.idx = 0;
2188 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
2189 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2190 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
2191 (ctx.vlen < 31 ||
2192 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
2193 ctx.line[ctx.val + 30] < '6' ||
2194 (ctx.line[ctx.val + 30] == '6' &&
2195 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
2196 s->comp_algo = NULL;
2197 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2198 }
2199
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2200 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2201 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2202 int best_q = 0;
2203
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2204 ctx.idx = 0;
2205 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2206 const char *qval;
2207 int q;
2208 int toklen;
2209
2210 /* try to isolate the token from the optional q-value */
2211 toklen = 0;
2212 while (toklen < ctx.vlen && http_is_token[(unsigned char)*(ctx.line + ctx.val + toklen)])
2213 toklen++;
2214
2215 qval = ctx.line + ctx.val + toklen;
2216 while (1) {
2217 while (qval < ctx.line + ctx.val + ctx.vlen && http_is_lws[(unsigned char)*qval])
2218 qval++;
2219
2220 if (qval >= ctx.line + ctx.val + ctx.vlen || *qval != ';') {
2221 qval = NULL;
2222 break;
2223 }
2224 qval++;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2225
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2226 while (qval < ctx.line + ctx.val + ctx.vlen && http_is_lws[(unsigned char)*qval])
2227 qval++;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2228
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2229 if (qval >= ctx.line + ctx.val + ctx.vlen) {
2230 qval = NULL;
2231 break;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2232 }
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2233 if (strncmp(qval, "q=", MIN(ctx.line + ctx.val + ctx.vlen - qval, 2)) == 0)
2234 break;
2235
2236 while (qval < ctx.line + ctx.val + ctx.vlen && *qval != ';')
2237 qval++;
2238 }
2239
2240 /* here we have qval pointing to the first "q=" attribute or NULL if not found */
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]2241 q = qval ? parse_qvalue(qval + 2, NULL) : 1000;
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2242
2243 if (q <= best_q)
2244 continue;
2245
2246 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
2247 if (*(ctx.line + ctx.val) == '*' ||
2248 word_match(ctx.line + ctx.val, toklen, comp_algo->name, comp_algo->name_len)) {
2249 s->comp_algo = comp_algo;
2250 best_q = q;
2251 break;
2252 }
2253 }
2254 }
2255 }
2256
2257 /* remove all occurrences of the header when "compression offload" is set */
2258 if (s->comp_algo) {
2259 if ((s->be->comp && s->be->comp->offload) || (s->fe->comp && s->fe->comp->offload)) {
2260 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2261 ctx.idx = 0;
2262 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2263 http_remove_header2(msg, &txn->hdr_idx, &ctx);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2264 }
2265 }
Willy Tarreau0e9b1b42014-03-19 12:07:52 +0100[diff] [blame]2266 return 1;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2267 }
2268
2269 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2270 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2271 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2272 if (comp_algo->add_data == identity_add_data) {
2273 s->comp_algo = comp_algo;
2274 return 1;
2275 }
2276 }
2277 }
2278
2279 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2280 return 0;
2281}
2282
2283/*
2284 * Selects a comression algorithm depending of the server response.
2285 */
2286int select_compression_response_header(struct session *s, struct buffer *res)
2287{
2288 struct http_txn *txn = &s->txn;
2289 struct http_msg *msg = &txn->rsp;
2290 struct hdr_ctx ctx;
2291 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2292
2293 /* no common compression algorithm was found in request header */
2294 if (s->comp_algo == NULL)
2295 goto fail;
2296
2297 /* HTTP < 1.1 should not be compressed */
Willy Tarreau72575502013-12-24 14:41:35 +0100[diff] [blame]2298 if (!(msg->flags & HTTP_MSGF_VER_11) || !(txn->req.flags & HTTP_MSGF_VER_11))
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2299 goto fail;
2300
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2301 /* 200 only */
2302 if (txn->status != 200)
2303 goto fail;
2304
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2305 /* Content-Length is null */
2306 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2307 goto fail;
2308
2309 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2310 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2311 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2312 goto fail;
2313
Willy Tarreau56e9ffa2013-01-05 16:20:35 +0100[diff] [blame]2314 /* no compression when Cache-Control: no-transform is present in the message */
2315 ctx.idx = 0;
2316 while (http_find_header2("Cache-Control", 13, res->p, &txn->hdr_idx, &ctx)) {
2317 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12))
2318 goto fail;
2319 }
2320
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2321 comp_type = NULL;
2322
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2323 /* we don't want to compress multipart content-types, nor content-types that are
2324 * not listed in the "compression type" directive if any. If no content-type was
2325 * found but configuration requires one, we don't compress either. Backend has
2326 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2327 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2328 ctx.idx = 0;
2329 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2330 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2331 goto fail;
2332
2333 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
2334 (s->fe->comp && (comp_type = s->fe->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2335 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2336 if (ctx.vlen >= comp_type->name_len &&
2337 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2338 /* this Content-Type should be compressed */
2339 break;
2340 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2341 /* this Content-Type should not be compressed */
2342 if (comp_type == NULL)
2343 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2344 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2345 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2346 else { /* no content-type header */
2347 if ((s->be->comp && s->be->comp->types) || (s->fe->comp && s->fe->comp->types))
2348 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2349 }
2350
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2351 /* limit compression rate */
2352 if (global.comp_rate_lim > 0)
2353 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2354 goto fail;
2355
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2356 /* limit cpu usage */
2357 if (idle_pct < compress_min_idle)
2358 goto fail;
2359
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2360 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2361 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2362 goto fail;
2363
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2364 s->flags |= SN_COMP_READY;
2365
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2366 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2367 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2368 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2369 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2370
2371 /* add Transfer-Encoding header */
2372 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2373 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2374
2375 /*
2376 * Add Content-Encoding header when it's not identity encoding.
2377 * RFC 2616 : Identity encoding: This content-coding is used only in the
2378 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2379 * header.
2380 */
2381 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2382 trash.len = 18;
2383 memcpy(trash.str, "Content-Encoding: ", trash.len);
2384 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2385 trash.len += s->comp_algo->name_len;
2386 trash.str[trash.len] = '\0';
2387 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2388 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2389 return 1;
2390
2391fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2392 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2393 return 0;
2394}
2395
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2396void http_adjust_conn_mode(struct session *s, struct http_txn *txn, struct http_msg *msg)
2397{
2398 int tmp = TX_CON_WANT_KAL;
2399
2400 if (!((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)) {
2401 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN ||
2402 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_TUN)
2403 tmp = TX_CON_WANT_TUN;
2404
2405 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
2406 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2407 tmp = TX_CON_WANT_TUN;
2408 }
2409
2410 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
2411 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL) {
2412 /* option httpclose + server_close => forceclose */
2413 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
2414 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)
2415 tmp = TX_CON_WANT_CLO;
2416 else
2417 tmp = TX_CON_WANT_SCL;
2418 }
2419
2420 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
2421 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
2422 tmp = TX_CON_WANT_CLO;
2423
2424 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
2425 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
2426
2427 if (!(txn->flags & TX_HDR_CONN_PRS) &&
2428 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) {
2429 /* parse the Connection header and possibly clean it */
2430 int to_del = 0;
2431 if ((msg->flags & HTTP_MSGF_VER_11) ||
2432 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
2433 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
2434 to_del |= 2; /* remove "keep-alive" */
2435 if (!(msg->flags & HTTP_MSGF_VER_11))
2436 to_del |= 1; /* remove "close" */
2437 http_parse_connection_header(txn, msg, to_del);
2438 }
2439
2440 /* check if client or config asks for explicit close in KAL/SCL */
2441 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
2442 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
2443 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
2444 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
2445 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
2446 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
2447 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
2448}
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2449
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2450/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2451 * processing can continue on next analysers, or zero if it either needs more
2452 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2453 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2454 * when it has nothing left to do, and may remove any analyser when it wants to
2455 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2456 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2457int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2458{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2459 /*
2460 * We will parse the partial (or complete) lines.
2461 * We will check the request syntax, and also join multi-line
2462 * headers. An index of all the lines will be elaborated while
2463 * parsing.
2464 *
2465 * For the parsing, we use a 28 states FSM.
2466 *
2467 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2468 * req->buf->p = beginning of request
2469 * req->buf->p + msg->eoh = end of processed headers / start of current one
2470 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2471 * msg->eol = end of current header or line (LF or CRLF)
2472 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2473 *
2474 * At end of parsing, we may perform a capture of the error (if any), and
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]2475 * we will set a few fields (txn->meth, sn->flags/SN_REDIRECTABLE).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2476 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2477 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2478 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2479
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2480 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2481 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2482 struct http_txn *txn = &s->txn;
2483 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2484 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2485
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2486 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]2487 now_ms, __FUNCTION__,
2488 s,
2489 req,
2490 req->rex, req->wex,
2491 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2492 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2493 req->analysers);
2494
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2495 /* we're speaking HTTP here, so let's speak HTTP to the client */
2496 s->srv_error = http_return_srv_error;
2497
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2498 /* There's a protected area at the end of the buffer for rewriting
2499 * purposes. We don't want to start to parse the request if the
2500 * protected area is affected, because we may have to move processed
2501 * data later, which is much more complicated.
2502 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2503 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2504 if (txn->flags & TX_NOT_FIRST) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]2505 if (unlikely(!channel_is_rewritable(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2506 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2507 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2508 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2509 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2510 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2511 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2512 return 0;
2513 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2514 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2515 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2516 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2517 }
2518
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2519 /* Note that we have the same problem with the response ; we
2520 * may want to send a redirect, error or anything which requires
2521 * some spare space. So we'll ensure that we have at least
2522 * maxrewrite bytes available in the response buffer before
2523 * processing that one. This will only affect pipelined
2524 * keep-alive requests.
2525 */
2526 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]2527 unlikely(!channel_is_rewritable(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2528 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2529 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2530 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2531 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]2532 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2533 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2534 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2535 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2536 s->rep->flags |= CF_WAKE_WRITE;
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2537 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2538 return 0;
2539 }
2540 }
2541
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2542 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2543 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2544 }
2545
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2546 /* 1: we might have to print this header in debug mode */
2547 if (unlikely((global.mode & MODE_DEBUG) &&
2548 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]2549 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2550 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2551
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2552 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2553 /* this is a bit complex : in case of error on the request line,
2554 * we know that rq.l is still zero, so we display only the part
2555 * up to the end of the line (truncated by debug_hdr).
2556 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2557 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2558 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2559
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2560 sol += hdr_idx_first_pos(&txn->hdr_idx);
2561 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2562
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2563 while (cur_idx) {
2564 eol = sol + txn->hdr_idx.v[cur_idx].len;
2565 debug_hdr("clihdr", s, sol, eol);
2566 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2567 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2568 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2569 }
2570
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2571
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2572 /*
2573 * Now we quickly check if we have found a full valid request.
2574 * If not so, we check the FD and buffer states before leaving.
2575 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2576 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2577 * requests are checked first. When waiting for a second request
2578 * on a keep-alive session, if we encounter and error, close, t/o,
2579 * we note the error in the session flags but don't set any state.
2580 * Since the error will be noted there, it will not be counted by
2581 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2582 * Last, we may increase some tracked counters' http request errors on
2583 * the cases that are deliberately the client's fault. For instance,
2584 * a timeout or connection reset is not counted as an error. However
2585 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2586 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2587
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2588 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2589 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2590 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2591 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2592 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2593 session_inc_http_req_ctr(s);
2594 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2595 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2596 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2597 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2598
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2599 /* 1: Since we are in header mode, if there's no space
2600 * left for headers, we won't be able to free more
2601 * later, so the session will never terminate. We
2602 * must terminate it now.
2603 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2604 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2605 /* FIXME: check if URI is set and return Status
2606 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2607 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2608 session_inc_http_req_ctr(s);
2609 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2610 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2611 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2612 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2613 goto return_bad_req;
2614 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2615
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2616 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2617 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2618 if (!(s->flags & SN_ERR_MASK))
2619 s->flags |= SN_ERR_CLICL;
2620
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2621 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2622 goto failed_keep_alive;
2623
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2624 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2625 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2626 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]2627 session_inc_http_err_ctr(s);
2628 }
2629
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2630 txn->status = 400;
2631 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2632 msg->msg_state = HTTP_MSG_ERROR;
2633 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2634
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2635 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2636 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2637 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2638 if (s->listener->counters)
2639 s->listener->counters->failed_req++;
2640
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2641 if (!(s->flags & SN_FINST_MASK))
2642 s->flags |= SN_FINST_R;
2643 return 0;
2644 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2645
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2646 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2647 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]2648 if (!(s->flags & SN_ERR_MASK))
2649 s->flags |= SN_ERR_CLITO;
2650
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2651 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2652 goto failed_keep_alive;
2653
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2654 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2655 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2656 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]2657 session_inc_http_err_ctr(s);
2658 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2659 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2660 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2661 msg->msg_state = HTTP_MSG_ERROR;
2662 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2663
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2664 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2665 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2666 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2667 if (s->listener->counters)
2668 s->listener->counters->failed_req++;
2669
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2670 if (!(s->flags & SN_FINST_MASK))
2671 s->flags |= SN_FINST_R;
2672 return 0;
2673 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2674
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2675 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2676 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2677 if (!(s->flags & SN_ERR_MASK))
2678 s->flags |= SN_ERR_CLICL;
2679
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2680 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2681 goto failed_keep_alive;
2682
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2683 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2684 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]2685 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2686 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2687 msg->msg_state = HTTP_MSG_ERROR;
2688 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2689
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2690 session_inc_http_err_ctr(s);
2691 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2692 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2693 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2694 if (s->listener->counters)
2695 s->listener->counters->failed_req++;
2696
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2697 if (!(s->flags & SN_FINST_MASK))
2698 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2699 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2700 }
2701
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2702 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2703 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2704 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2705#ifdef TCP_QUICKACK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]2706 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]2707 /* We need more data, we have to re-enable quick-ack in case we
2708 * previously disabled it, otherwise we might cause the client
2709 * to delay next data.
2710 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2711 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]2712 }
2713#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2714
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2715 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2716 /* If the client starts to talk, let's fall back to
2717 * request timeout processing.
2718 */
2719 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2720 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2721 }
2722
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2723 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2724 if (!tick_isset(req->analyse_exp)) {
2725 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2726 (txn->flags & TX_WAIT_NEXT_RQ) &&
2727 tick_isset(s->be->timeout.httpka))
2728 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2729 else
2730 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2731 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2732
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2733 /* we're not ready yet */
2734 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2735
2736 failed_keep_alive:
2737 /* Here we process low-level errors for keep-alive requests. In
2738 * short, if the request is not the first one and it experiences
2739 * a timeout, read error or shutdown, we just silently close so
2740 * that the client can try again.
2741 */
2742 txn->status = 0;
2743 msg->msg_state = HTTP_MSG_RQBEFORE;
2744 req->analysers = 0;
2745 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2746 s->logs.level = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2747 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2748 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2749 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2750 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2751
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2752 /* OK now we have a complete HTTP request with indexed headers. Let's
2753 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2754 * 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]2755 * 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]2756 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2757 * byte after the last LF. msg->sov points to the first byte of data.
2758 * msg->eol cannot be trusted because it may have been left uninitialized
2759 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2760 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2761
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2762 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2763 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2764
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2765 if (txn->flags & TX_WAIT_NEXT_RQ) {
2766 /* kill the pending keep-alive timeout */
2767 txn->flags &= ~TX_WAIT_NEXT_RQ;
2768 req->analyse_exp = TICK_ETERNITY;
2769 }
2770
2771
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2772 /* Maybe we found in invalid header name while we were configured not
2773 * to block on that, so we have to capture it now.
2774 */
2775 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2776 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]2777
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2778 /*
2779 * 1: identify the method
2780 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2781 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2782
2783 /* we can make use of server redirect on GET and HEAD */
2784 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2785 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2786
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2787 /*
2788 * 2: check if the URI matches the monitor_uri.
2789 * We have to do this for every request which gets in, because
2790 * the monitor-uri is defined by the frontend.
2791 */
2792 if (unlikely((s->fe->monitor_uri_len != 0) &&
2793 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2794 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2795 s->fe->monitor_uri,
2796 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2797 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2798 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2799 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2800 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2801
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2802 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2803 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2804
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2805 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2806 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2807 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]2808
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2809 ret = acl_pass(ret);
2810 if (cond->pol == ACL_COND_UNLESS)
2811 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2812
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2813 if (ret) {
2814 /* we fail this request, let's return 503 service unavail */
2815 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2816 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2817 if (!(s->flags & SN_ERR_MASK))
2818 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2819 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2820 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2821 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2822
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2823 /* nothing to fail, let's reply normaly */
2824 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2825 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2826 if (!(s->flags & SN_ERR_MASK))
2827 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2828 goto return_prx_cond;
2829 }
2830
2831 /*
2832 * 3: Maybe we have to copy the original REQURI for the logs ?
2833 * Note: we cannot log anymore if the request has been
2834 * classified as invalid.
2835 */
2836 if (unlikely(s->logs.logwait & LW_REQ)) {
2837 /* we have a complete HTTP request that we must log */
2838 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2839 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2840
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2841 if (urilen >= REQURI_LEN)
2842 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2843 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2844 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2845
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2846 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2847 s->do_log(s);
2848 } else {
2849 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2850 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2851 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2852
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2853 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2854 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2855 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2856
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2857 /* ... and check if the request is HTTP/1.1 or above */
2858 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2859 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2860 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2861 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2862 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2863
2864 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2865 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]2866
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2867 /* if the frontend has "option http-use-proxy-header", we'll check if
2868 * we have what looks like a proxied connection instead of a connection,
2869 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2870 * Note that this is *not* RFC-compliant, however browsers and proxies
2871 * happen to do that despite being non-standard :-(
2872 * We consider that a request not beginning with either '/' or '*' is
2873 * a proxied connection, which covers both "scheme://location" and
2874 * CONNECT ip:port.
2875 */
2876 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2877 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2878 txn->flags |= TX_USE_PX_CONN;
2879
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2880 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2881 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2882
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2883 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2884 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2885 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2886 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2887
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2888 /* 6: determine the transfer-length.
2889 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2890 * the presence of a message-body in a REQUEST and its transfer length
2891 * must be determined that way (in order of precedence) :
2892 * 1. The presence of a message-body in a request is signaled by the
2893 * inclusion of a Content-Length or Transfer-Encoding header field
2894 * in the request's header fields. When a request message contains
2895 * both a message-body of non-zero length and a method that does
2896 * not define any semantics for that request message-body, then an
2897 * origin server SHOULD either ignore the message-body or respond
2898 * with an appropriate error message (e.g., 413). A proxy or
2899 * gateway, when presented the same request, SHOULD either forward
2900 * the request inbound with the message- body or ignore the
2901 * message-body when determining a response.
2902 *
2903 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2904 * and the "chunked" transfer-coding (Section 6.2) is used, the
2905 * transfer-length is defined by the use of this transfer-coding.
2906 * If a Transfer-Encoding header field is present and the "chunked"
2907 * transfer-coding is not present, the transfer-length is defined
2908 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2909 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2910 * 3. If a Content-Length header field is present, its decimal value in
2911 * OCTETs represents both the entity-length and the transfer-length.
2912 * If a message is received with both a Transfer-Encoding header
2913 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2914 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2915 * 4. By the server closing the connection. (Closing the connection
2916 * cannot be used to indicate the end of a request body, since that
2917 * would leave no possibility for the server to send back a response.)
2918 *
2919 * Whenever a transfer-coding is applied to a message-body, the set of
2920 * transfer-codings MUST include "chunked", unless the message indicates
2921 * it is terminated by closing the connection. When the "chunked"
2922 * transfer-coding is used, it MUST be the last transfer-coding applied
2923 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2924 */
2925
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2926 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2927 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2928 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2929 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2930 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2931 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2932 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2933 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2934 /* bad transfer-encoding (chunked followed by something else) */
2935 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2936 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2937 break;
2938 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2939 }
2940
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2941 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2942 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2943 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2944 signed long long cl;
2945
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2946 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2947 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2948 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2949 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2950
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2951 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2952 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2953 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2954 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2955
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2956 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2957 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2958 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2959 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2960
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2961 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2962 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2963 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2964 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2965
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2966 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2967 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2968 }
2969
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2970 /* bodyless requests have a known length */
2971 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2972 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2973
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]2974 /* Until set to anything else, the connection mode is set as Keep-Alive. It will
2975 * only change if both the request and the config reference something else.
2976 * Option httpclose by itself sets tunnel mode where headers are mangled.
2977 * However, if another mode is set, it will affect it (eg: server-close/
2978 * keep-alive + httpclose = close). Note that we avoid to redo the same work
2979 * if FE and BE have the same settings (common). The method consists in
2980 * checking if options changed between the two calls (implying that either
2981 * one is non-null, or one of them is non-null and we are there for the first
2982 * time.
2983 */
2984 if (!(txn->flags & TX_HDR_CONN_PRS) ||
Willy Tarreau4e21ff92014-09-30 18:44:22 +0200[diff] [blame]2985 ((s->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE)))
2986 http_adjust_conn_mode(s, txn, msg);
Willy Tarreau179085c2014-04-28 16:48:56 +0200[diff] [blame]2987
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2988 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2989 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2990 req->analyse_exp = TICK_ETERNITY;
2991 return 1;
2992
2993 return_bad_req:
2994 /* We centralize bad requests processing here */
2995 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2996 /* we detected a parsing error. We want to archive this request
2997 * in the dedicated proxy area for later troubleshooting.
2998 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2999 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]3000 }
3001
3002 txn->req.msg_state = HTTP_MSG_ERROR;
3003 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3004 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3005
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3006 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3007 if (s->listener->counters)
3008 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3009
3010 return_prx_cond:
3011 if (!(s->flags & SN_ERR_MASK))
3012 s->flags |= SN_ERR_PRXCOND;
3013 if (!(s->flags & SN_FINST_MASK))
3014 s->flags |= SN_FINST_R;
3015
3016 req->analysers = 0;
3017 req->analyse_exp = TICK_ETERNITY;
3018 return 0;
3019}
3020
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]3021
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3022/* This function prepares an applet to handle the stats. It can deal with the
3023 * "100-continue" expectation, check that admin rules are met for POST requests,
3024 * and program a response message if something was unexpected. It cannot fail
3025 * 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]3026 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3027 * s->target which is supposed to already point to the stats applet. The caller
3028 * is expected to have already assigned an appctx to the session.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3029 */
3030int http_handle_stats(struct session *s, struct channel *req)
3031{
3032 struct stats_admin_rule *stats_admin_rule;
3033 struct stream_interface *si = s->rep->prod;
3034 struct http_txn *txn = &s->txn;
3035 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3036 struct uri_auth *uri_auth = s->be->uri_auth;
3037 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3038 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3039
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3040 appctx = si_appctx(si);
3041 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
3042 appctx->st1 = appctx->st2 = 0;
3043 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
3044 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreauaf3cf702014-04-22 22:19:53 +0200[diff] [blame]3045 if ((msg->flags & HTTP_MSGF_VER_11) && (s->txn.meth != HTTP_METH_HEAD))
3046 appctx->ctx.stats.flags |= STAT_CHUNKED;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3047
3048 uri = msg->chn->buf->p + msg->sl.rq.u;
3049 lookup = uri + uri_auth->uri_len;
3050
3051 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
3052 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3053 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3054 break;
3055 }
3056 }
3057
3058 if (uri_auth->refresh) {
3059 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
3060 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3061 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3062 break;
3063 }
3064 }
3065 }
3066
3067 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
3068 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3069 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3070 break;
3071 }
3072 }
3073
3074 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3075 if (memcmp(h, ";st=", 4) == 0) {
3076 int i;
3077 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3078 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3079 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
3080 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3081 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3082 break;
3083 }
3084 }
3085 break;
3086 }
3087 }
3088
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3089 appctx->ctx.stats.scope_str = 0;
3090 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3091 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
3092 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
3093 int itx = 0;
3094 const char *h2;
3095 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
3096 const char *err;
3097
3098 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
3099 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3100 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3101 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
3102 itx++;
3103 h++;
3104 }
3105
3106 if (itx > STAT_SCOPE_TXT_MAXLEN)
3107 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3108 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3109
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3110 /* 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]3111 memcpy(scope_txt, h2, itx);
3112 scope_txt[itx] = '\0';
3113 err = invalid_char(scope_txt);
3114 if (err) {
3115 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3116 appctx->ctx.stats.scope_str = 0;
3117 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3118 }
3119 break;
3120 }
3121 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3122
3123 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3124 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3125 int ret = 1;
3126
3127 if (stats_admin_rule->cond) {
3128 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
3129 ret = acl_pass(ret);
3130 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
3131 ret = !ret;
3132 }
3133
3134 if (ret) {
3135 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3136 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3137 break;
3138 }
3139 }
3140
3141 /* Was the status page requested with a POST ? */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3142 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3143 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreaucfe7fdd2014-04-26 22:08:32 +0200[diff] [blame]3144 /* we'll need the request body, possibly after sending 100-continue */
3145 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3146 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3147 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3148 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3149 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
3150 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]3151 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3152 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3153 else {
3154 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3155 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3156 }
3157
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3158 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3159 return 1;
3160}
3161
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3162/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
3163 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
3164 */
3165static inline void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
3166{
3167#ifdef IP_TOS
3168 if (from.ss_family == AF_INET)
3169 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3170#endif
3171#ifdef IPV6_TCLASS
3172 if (from.ss_family == AF_INET6) {
3173 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
3174 /* v4-mapped addresses need IP_TOS */
3175 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
3176 else
3177 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
3178 }
3179#endif
3180}
3181
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3182/* Returns the number of characters written to destination,
3183 * -1 on internal error and -2 if no replacement took place.
3184 */
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3185static int http_replace_header(struct my_regex *re, char *dst, uint dst_size, char *val, int len,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3186 const char *rep_str)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3187{
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]3188 if (!regex_exec_match2(re, val, len, MAX_MATCH, pmatch, 0))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3189 return -2;
3190
3191 return exp_replace(dst, dst_size, val, rep_str, pmatch);
3192}
3193
3194/* Returns the number of characters written to destination,
3195 * -1 on internal error and -2 if no replacement took place.
3196 */
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3197static int http_replace_value(struct my_regex *re, char *dst, uint dst_size, char *val, int len, char delim,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3198 const char *rep_str)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3199{
3200 char* p = val;
3201 char* dst_end = dst + dst_size;
3202 char* dst_p = dst;
3203
3204 for (;;) {
3205 char *p_delim;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3206
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3207 /* look for delim. */
3208 p_delim = p;
3209 while (p_delim < p + len && *p_delim != delim)
3210 p_delim++;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3211
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]3212 if (regex_exec_match2(re, p, p_delim-p, MAX_MATCH, pmatch, 0)) {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3213 int replace_n = exp_replace(dst_p, dst_end - dst_p, p, rep_str, pmatch);
3214
3215 if (replace_n < 0)
3216 return -1;
3217
3218 dst_p += replace_n;
3219 } else {
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3220 uint len = p_delim - p;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3221
3222 if (dst_p + len >= dst_end)
3223 return -1;
3224
3225 memcpy(dst_p, p, len);
3226 dst_p += len;
3227 }
3228
3229 if (dst_p >= dst_end)
3230 return -1;
3231
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3232 /* end of the replacements. */
3233 if (p_delim >= p + len)
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3234 break;
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3235
3236 /* Next part. */
3237 *dst_p++ = delim;
3238 p = p_delim + 1;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3239 }
3240
3241 return dst_p - dst;
3242}
3243
3244static int http_transform_header(struct session* s, struct http_msg *msg, const char* name, uint name_len,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3245 char* buf, struct hdr_idx* idx, struct list *fmt, struct my_regex *re,
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3246 struct hdr_ctx* ctx, int action)
3247{
3248 ctx->idx = 0;
3249
3250 while (http_find_full_header2(name, name_len, buf, idx, ctx)) {
3251 struct hdr_idx_elem *hdr = idx->v + ctx->idx;
3252 int delta;
Willy Tarreauaa435e72015-01-29 14:01:34 +0100[diff] [blame]3253 char* val = (char*)ctx->line + ctx->val;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3254 char* val_end = (char*)ctx->line + hdr->len;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3255 char* reg_dst_buf;
3256 uint reg_dst_buf_size;
3257 int n_replaced;
3258
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3259 trash.len = build_logline(s, trash.str, trash.size, fmt);
3260
3261 if (trash.len >= trash.size - 1)
3262 return -1;
3263
3264 reg_dst_buf = trash.str + trash.len + 1;
3265 reg_dst_buf_size = trash.size - trash.len - 1;
3266
3267 switch (action) {
3268 case HTTP_REQ_ACT_REPLACE_VAL:
3269 case HTTP_RES_ACT_REPLACE_VAL:
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3270 n_replaced = http_replace_value(re, reg_dst_buf, reg_dst_buf_size, val, val_end-val, ',', trash.str);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3271 break;
3272 case HTTP_REQ_ACT_REPLACE_HDR:
3273 case HTTP_RES_ACT_REPLACE_HDR:
Thierry FOURNIERc9c2daf2014-06-18 11:53:08 +0200[diff] [blame]3274 n_replaced = http_replace_header(re, reg_dst_buf, reg_dst_buf_size, val, val_end-val, trash.str);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3275 break;
3276 default: /* impossible */
3277 return -1;
3278 }
3279
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3280 switch (n_replaced) {
3281 case -1: return -1;
3282 case -2: continue;
3283 }
3284
3285 delta = buffer_replace2(msg->chn->buf, val, val_end, reg_dst_buf, n_replaced);
3286
3287 hdr->len += delta;
3288 http_msg_move_end(msg, delta);
3289 }
3290
3291 return 0;
3292}
3293
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3294/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3295 * transaction <txn>. Returns the verdict of the first rule that prevents
3296 * further processing of the request (auth, deny, ...), and defaults to
3297 * HTTP_RULE_RES_STOP if it executed all rules or stopped on an allow, or
3298 * HTTP_RULE_RES_CONT if the last rule was reached. It may set the TX_CLTARPIT
3299 * on txn->flags if it encounters a tarpit rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3300 */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3301enum rule_result
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3302http_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]3303{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3304 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3305 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3306 struct hdr_ctx ctx;
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3307 const char *auth_realm;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3308
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3309 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3310 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3311 continue;
3312
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3313 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3314 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3315 int ret;
3316
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3317 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]3318 ret = acl_pass(ret);
3319
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3320 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3321 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3322
3323 if (!ret) /* condition not matched */
3324 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3325 }
3326
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3327
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3328 switch (rule->action) {
3329 case HTTP_REQ_ACT_ALLOW:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3330 return HTTP_RULE_RES_STOP;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3331
3332 case HTTP_REQ_ACT_DENY:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3333 return HTTP_RULE_RES_DENY;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3334
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3335 case HTTP_REQ_ACT_TARPIT:
3336 txn->flags |= TX_CLTARPIT;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3337 return HTTP_RULE_RES_DENY;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3338
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3339 case HTTP_REQ_ACT_AUTH:
Willy Tarreauae3c0102014-04-28 23:22:08 +0200[diff] [blame]3340 /* Auth might be performed on regular http-req rules as well as on stats */
3341 auth_realm = rule->arg.auth.realm;
3342 if (!auth_realm) {
3343 if (px->uri_auth && rules == &px->uri_auth->http_req_rules)
3344 auth_realm = STATS_DEFAULT_REALM;
3345 else
3346 auth_realm = px->id;
3347 }
3348 /* send 401/407 depending on whether we use a proxy or not. We still
3349 * count one error, because normal browsing won't significantly
3350 * increase the counter but brute force attempts will.
3351 */
3352 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, auth_realm);
3353 txn->status = (txn->flags & TX_USE_PX_CONN) ? 407 : 401;
3354 stream_int_retnclose(&s->si[0], &trash);
3355 session_inc_http_err_ctr(s);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3356 return HTTP_RULE_RES_ABRT;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3357
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3358 case HTTP_REQ_ACT_REDIR:
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3359 if (!http_apply_redirect_rule(rule->arg.redir, s, txn))
3360 return HTTP_RULE_RES_BADREQ;
3361 return HTTP_RULE_RES_DONE;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3362
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3363 case HTTP_REQ_ACT_SET_NICE:
3364 s->task->nice = rule->arg.nice;
3365 break;
3366
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3367 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3368 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3369 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]3370 break;
3371
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3372 case HTTP_REQ_ACT_SET_MARK:
3373#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3374 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3375 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]3376#endif
3377 break;
3378
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3379 case HTTP_REQ_ACT_SET_LOGL:
3380 s->logs.level = rule->arg.loglevel;
3381 break;
3382
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3383 case HTTP_REQ_ACT_REPLACE_HDR:
3384 case HTTP_REQ_ACT_REPLACE_VAL:
3385 if (http_transform_header(s, &txn->req, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3386 txn->req.chn->buf->p, &txn->hdr_idx, &rule->arg.hdr_add.fmt,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3387 &rule->arg.hdr_add.re, &ctx, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3388 return HTTP_RULE_RES_BADREQ;
3389 break;
3390
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3391 case HTTP_REQ_ACT_DEL_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3392 ctx.idx = 0;
3393 /* remove all occurrences of the header */
3394 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3395 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3396 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3397 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3398 break;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3399
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3400 case HTTP_REQ_ACT_SET_HDR:
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3401 case HTTP_REQ_ACT_ADD_HDR:
3402 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3403 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3404 trash.len = rule->arg.hdr_add.name_len;
3405 trash.str[trash.len++] = ':';
3406 trash.str[trash.len++] = ' ';
3407 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3408
3409 if (rule->action == HTTP_REQ_ACT_SET_HDR) {
3410 /* remove all occurrences of the header */
3411 ctx.idx = 0;
3412 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3413 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3414 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
3415 }
3416 }
3417
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3418 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3419 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3420
3421 case HTTP_REQ_ACT_DEL_ACL:
3422 case HTTP_REQ_ACT_DEL_MAP: {
3423 struct pat_ref *ref;
3424 char *key;
3425 int len;
3426
3427 /* collect reference */
3428 ref = pat_ref_lookup(rule->arg.map.ref);
3429 if (!ref)
3430 continue;
3431
3432 /* collect key */
3433 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3434 key = trash.str;
3435 key[len] = '\0';
3436
3437 /* perform update */
3438 /* returned code: 1=ok, 0=ko */
3439 pat_ref_delete(ref, key);
3440
3441 break;
3442 }
3443
3444 case HTTP_REQ_ACT_ADD_ACL: {
3445 struct pat_ref *ref;
3446 char *key;
3447 struct chunk *trash_key;
3448 int len;
3449
3450 trash_key = get_trash_chunk();
3451
3452 /* collect reference */
3453 ref = pat_ref_lookup(rule->arg.map.ref);
3454 if (!ref)
3455 continue;
3456
3457 /* collect key */
3458 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3459 key = trash_key->str;
3460 key[len] = '\0';
3461
3462 /* perform update */
3463 /* add entry only if it does not already exist */
3464 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3465 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3466
3467 break;
3468 }
3469
3470 case HTTP_REQ_ACT_SET_MAP: {
3471 struct pat_ref *ref;
3472 char *key, *value;
3473 struct chunk *trash_key, *trash_value;
3474 int len;
3475
3476 trash_key = get_trash_chunk();
3477 trash_value = get_trash_chunk();
3478
3479 /* collect reference */
3480 ref = pat_ref_lookup(rule->arg.map.ref);
3481 if (!ref)
3482 continue;
3483
3484 /* collect key */
3485 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3486 key = trash_key->str;
3487 key[len] = '\0';
3488
3489 /* collect value */
3490 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3491 value = trash_value->str;
3492 value[len] = '\0';
3493
3494 /* perform update */
3495 if (pat_ref_find_elt(ref, key) != NULL)
3496 /* update entry if it exists */
3497 pat_ref_set(ref, key, value, NULL);
3498 else
3499 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3500 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3501
3502 break;
3503 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3504
3505 case HTTP_REQ_ACT_CUSTOM_CONT:
3506 rule->action_ptr(rule, px, s, txn);
3507 break;
3508
3509 case HTTP_REQ_ACT_CUSTOM_STOP:
3510 rule->action_ptr(rule, px, s, txn);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3511 return HTTP_RULE_RES_DONE;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]3512
3513 case HTTP_REQ_ACT_TRK_SC0 ... HTTP_REQ_ACT_TRK_SCMAX:
3514 /* Note: only the first valid tracking parameter of each
3515 * applies.
3516 */
3517
3518 if (stkctr_entry(&s->stkctr[http_req_trk_idx(rule->action)]) == NULL) {
3519 struct stktable *t;
3520 struct stksess *ts;
3521 struct stktable_key *key;
3522 void *ptr;
3523
3524 t = rule->act_prm.trk_ctr.table.t;
3525 key = stktable_fetch_key(t, s->be, s, &s->txn, SMP_OPT_DIR_REQ | SMP_OPT_FINAL, rule->act_prm.trk_ctr.expr, NULL);
3526
3527 if (key && (ts = stktable_get_entry(t, key))) {
3528 session_track_stkctr(&s->stkctr[http_req_trk_idx(rule->action)], t, ts);
3529
3530 /* let's count a new HTTP request as it's the first time we do it */
3531 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_CNT);
3532 if (ptr)
3533 stktable_data_cast(ptr, http_req_cnt)++;
3534
3535 ptr = stktable_data_ptr(t, ts, STKTABLE_DT_HTTP_REQ_RATE);
3536 if (ptr)
3537 update_freq_ctr_period(&stktable_data_cast(ptr, http_req_rate),
3538 t->data_arg[STKTABLE_DT_HTTP_REQ_RATE].u, 1);
3539
3540 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_CONTENT);
3541 if (s->fe != s->be)
3542 stkctr_set_flags(&s->stkctr[http_req_trk_idx(rule->action)], STKCTR_TRACK_BACKEND);
3543 }
3544 }
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3545 }
3546 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3547
3548 /* we reached the end of the rules, nothing to report */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]3549 return HTTP_RULE_RES_CONT;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3550}
3551
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3552
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3553/* Executes the http-response rules <rules> for session <s>, proxy <px> and
3554 * transaction <txn>. Returns the first rule that prevents further processing
3555 * of the response (deny, ...) or NULL if it executed all rules or stopped
3556 * on an allow. It may set the TX_SVDENY on txn->flags if it encounters a deny
3557 * rule.
3558 */
3559static struct http_res_rule *
3560http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3561{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3562 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3563 struct http_res_rule *rule;
3564 struct hdr_ctx ctx;
3565
3566 list_for_each_entry(rule, rules, list) {
3567 if (rule->action >= HTTP_RES_ACT_MAX)
3568 continue;
3569
3570 /* check optional condition */
3571 if (rule->cond) {
3572 int ret;
3573
3574 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
3575 ret = acl_pass(ret);
3576
3577 if (rule->cond->pol == ACL_COND_UNLESS)
3578 ret = !ret;
3579
3580 if (!ret) /* condition not matched */
3581 continue;
3582 }
3583
3584
3585 switch (rule->action) {
3586 case HTTP_RES_ACT_ALLOW:
3587 return NULL; /* "allow" rules are OK */
3588
3589 case HTTP_RES_ACT_DENY:
3590 txn->flags |= TX_SVDENY;
3591 return rule;
3592
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3593 case HTTP_RES_ACT_SET_NICE:
3594 s->task->nice = rule->arg.nice;
3595 break;
3596
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3597 case HTTP_RES_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3598 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3599 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]3600 break;
3601
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3602 case HTTP_RES_ACT_SET_MARK:
3603#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3604 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3605 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]3606#endif
3607 break;
3608
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3609 case HTTP_RES_ACT_SET_LOGL:
3610 s->logs.level = rule->arg.loglevel;
3611 break;
3612
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3613 case HTTP_RES_ACT_REPLACE_HDR:
3614 case HTTP_RES_ACT_REPLACE_VAL:
3615 if (http_transform_header(s, &txn->rsp, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3616 txn->rsp.chn->buf->p, &txn->hdr_idx, &rule->arg.hdr_add.fmt,
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]3617 &rule->arg.hdr_add.re, &ctx, rule->action))
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]3618 return NULL; /* note: we should report an error here */
3619 break;
3620
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]3621 case HTTP_RES_ACT_DEL_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3622 ctx.idx = 0;
3623 /* remove all occurrences of the header */
3624 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3625 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3626 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3627 }
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3628 break;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3629
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3630 case HTTP_RES_ACT_SET_HDR:
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3631 case HTTP_RES_ACT_ADD_HDR:
3632 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3633 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3634 trash.len = rule->arg.hdr_add.name_len;
3635 trash.str[trash.len++] = ':';
3636 trash.str[trash.len++] = ' ';
3637 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
Willy Tarreau85603282015-01-21 20:39:27 +0100[diff] [blame]3638
3639 if (rule->action == HTTP_RES_ACT_SET_HDR) {
3640 /* remove all occurrences of the header */
3641 ctx.idx = 0;
3642 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3643 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3644 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3645 }
3646 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3647 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3648 break;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3649
3650 case HTTP_RES_ACT_DEL_ACL:
3651 case HTTP_RES_ACT_DEL_MAP: {
3652 struct pat_ref *ref;
3653 char *key;
3654 int len;
3655
3656 /* collect reference */
3657 ref = pat_ref_lookup(rule->arg.map.ref);
3658 if (!ref)
3659 continue;
3660
3661 /* collect key */
3662 len = build_logline(s, trash.str, trash.size, &rule->arg.map.key);
3663 key = trash.str;
3664 key[len] = '\0';
3665
3666 /* perform update */
3667 /* returned code: 1=ok, 0=ko */
3668 pat_ref_delete(ref, key);
3669
3670 break;
3671 }
3672
3673 case HTTP_RES_ACT_ADD_ACL: {
3674 struct pat_ref *ref;
3675 char *key;
3676 struct chunk *trash_key;
3677 int len;
3678
3679 trash_key = get_trash_chunk();
3680
3681 /* collect reference */
3682 ref = pat_ref_lookup(rule->arg.map.ref);
3683 if (!ref)
3684 continue;
3685
3686 /* collect key */
3687 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3688 key = trash_key->str;
3689 key[len] = '\0';
3690
3691 /* perform update */
3692 /* check if the entry already exists */
3693 if (pat_ref_find_elt(ref, key) == NULL)
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3694 pat_ref_add(ref, key, NULL, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3695
3696 break;
3697 }
3698
3699 case HTTP_RES_ACT_SET_MAP: {
3700 struct pat_ref *ref;
3701 char *key, *value;
3702 struct chunk *trash_key, *trash_value;
3703 int len;
3704
3705 trash_key = get_trash_chunk();
3706 trash_value = get_trash_chunk();
3707
3708 /* collect reference */
3709 ref = pat_ref_lookup(rule->arg.map.ref);
3710 if (!ref)
3711 continue;
3712
3713 /* collect key */
3714 len = build_logline(s, trash_key->str, trash_key->size, &rule->arg.map.key);
3715 key = trash_key->str;
3716 key[len] = '\0';
3717
3718 /* collect value */
3719 len = build_logline(s, trash_value->str, trash_value->size, &rule->arg.map.value);
3720 value = trash_value->str;
3721 value[len] = '\0';
3722
3723 /* perform update */
3724 if (pat_ref_find_elt(ref, key) != NULL)
3725 /* update entry if it exists */
3726 pat_ref_set(ref, key, value, NULL);
3727 else
3728 /* insert a new entry */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]3729 pat_ref_add(ref, key, value, NULL);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]3730
3731 break;
3732 }
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]3733
3734 case HTTP_RES_ACT_CUSTOM_CONT:
3735 rule->action_ptr(rule, px, s, txn);
3736 break;
3737
3738 case HTTP_RES_ACT_CUSTOM_STOP:
3739 rule->action_ptr(rule, px, s, txn);
3740 return rule;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3741 }
3742 }
3743
3744 /* we reached the end of the rules, nothing to report */
3745 return NULL;
3746}
3747
3748
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3749/* Perform an HTTP redirect based on the information in <rule>. The function
3750 * returns non-zero on success, or zero in case of a, irrecoverable error such
3751 * as too large a request to build a valid response.
3752 */
3753static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3754{
3755 struct http_msg *msg = &txn->req;
3756 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3757 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3758
3759 /* build redirect message */
3760 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3761 case 308:
3762 msg_fmt = HTTP_308;
3763 break;
3764 case 307:
3765 msg_fmt = HTTP_307;
3766 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3767 case 303:
3768 msg_fmt = HTTP_303;
3769 break;
3770 case 301:
3771 msg_fmt = HTTP_301;
3772 break;
3773 case 302:
3774 default:
3775 msg_fmt = HTTP_302;
3776 break;
3777 }
3778
3779 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3780 return 0;
3781
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3782 location = trash.str + trash.len;
3783
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3784 switch(rule->type) {
3785 case REDIRECT_TYPE_SCHEME: {
3786 const char *path;
3787 const char *host;
3788 struct hdr_ctx ctx;
3789 int pathlen;
3790 int hostlen;
3791
3792 host = "";
3793 hostlen = 0;
3794 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]3795 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]3796 host = ctx.line + ctx.val;
3797 hostlen = ctx.vlen;
3798 }
3799
3800 path = http_get_path(txn);
3801 /* build message using path */
3802 if (path) {
3803 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3804 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3805 int qs = 0;
3806 while (qs < pathlen) {
3807 if (path[qs] == '?') {
3808 pathlen = qs;
3809 break;
3810 }
3811 qs++;
3812 }
3813 }
3814 } else {
3815 path = "/";
3816 pathlen = 1;
3817 }
3818
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3819 if (rule->rdr_str) { /* this is an old "redirect" rule */
3820 /* check if we can add scheme + "://" + host + path */
3821 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3822 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3823
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3824 /* add scheme */
3825 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3826 trash.len += rule->rdr_len;
3827 }
3828 else {
3829 /* add scheme with executing log format */
3830 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]3831
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3832 /* check if we can add scheme + "://" + host + path */
3833 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3834 return 0;
3835 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3836 /* add "://" */
3837 memcpy(trash.str + trash.len, "://", 3);
3838 trash.len += 3;
3839
3840 /* add host */
3841 memcpy(trash.str + trash.len, host, hostlen);
3842 trash.len += hostlen;
3843
3844 /* add path */
3845 memcpy(trash.str + trash.len, path, pathlen);
3846 trash.len += pathlen;
3847
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3848 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3849 if (trash.len && trash.str[trash.len - 1] != '/' &&
3850 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3851 if (trash.len > trash.size - 5)
3852 return 0;
3853 trash.str[trash.len] = '/';
3854 trash.len++;
3855 }
3856
3857 break;
3858 }
3859 case REDIRECT_TYPE_PREFIX: {
3860 const char *path;
3861 int pathlen;
3862
3863 path = http_get_path(txn);
3864 /* build message using path */
3865 if (path) {
3866 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3867 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3868 int qs = 0;
3869 while (qs < pathlen) {
3870 if (path[qs] == '?') {
3871 pathlen = qs;
3872 break;
3873 }
3874 qs++;
3875 }
3876 }
3877 } else {
3878 path = "/";
3879 pathlen = 1;
3880 }
3881
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3882 if (rule->rdr_str) { /* this is an old "redirect" rule */
3883 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3884 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3885
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3886 /* add prefix. Note that if prefix == "/", we don't want to
3887 * add anything, otherwise it makes it hard for the user to
3888 * configure a self-redirection.
3889 */
3890 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3891 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3892 trash.len += rule->rdr_len;
3893 }
3894 }
3895 else {
3896 /* add prefix with executing log format */
3897 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3898
3899 /* Check length */
3900 if (trash.len + pathlen > trash.size - 4)
3901 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3902 }
3903
3904 /* add path */
3905 memcpy(trash.str + trash.len, path, pathlen);
3906 trash.len += pathlen;
3907
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3908 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3909 if (trash.len && trash.str[trash.len - 1] != '/' &&
3910 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3911 if (trash.len > trash.size - 5)
3912 return 0;
3913 trash.str[trash.len] = '/';
3914 trash.len++;
3915 }
3916
3917 break;
3918 }
3919 case REDIRECT_TYPE_LOCATION:
3920 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3921 if (rule->rdr_str) { /* this is an old "redirect" rule */
3922 if (trash.len + rule->rdr_len > trash.size - 4)
3923 return 0;
3924
3925 /* add location */
3926 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3927 trash.len += rule->rdr_len;
3928 }
3929 else {
3930 /* add location with executing log format */
3931 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]3932
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3933 /* Check left length */
3934 if (trash.len > trash.size - 4)
3935 return 0;
3936 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3937 break;
3938 }
3939
3940 if (rule->cookie_len) {
3941 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3942 trash.len += 14;
3943 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3944 trash.len += rule->cookie_len;
3945 memcpy(trash.str + trash.len, "\r\n", 2);
3946 trash.len += 2;
3947 }
3948
3949 /* add end of headers and the keep-alive/close status.
3950 * We may choose to set keep-alive if the Location begins
3951 * with a slash, because the client will come back to the
3952 * same server.
3953 */
3954 txn->status = rule->code;
3955 /* let's log the request time */
3956 s->logs.tv_request = now;
3957
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3958 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3959 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3960 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3961 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3962 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3963 /* keep-alive possible */
3964 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3965 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3966 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3967 trash.len += 30;
3968 } else {
3969 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3970 trash.len += 24;
3971 }
3972 }
3973 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3974 trash.len += 4;
3975 bo_inject(txn->rsp.chn, trash.str, trash.len);
3976 /* "eat" the request */
3977 bi_fast_delete(txn->req.chn->buf, msg->sov);
Willy Tarreau6d8bac72014-04-25 12:19:32 +0200[diff] [blame]3978 msg->next -= msg->sov;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3979 msg->sov = 0;
3980 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3981 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3982 txn->req.msg_state = HTTP_MSG_CLOSED;
3983 txn->rsp.msg_state = HTTP_MSG_DONE;
3984 } else {
3985 /* keep-alive not possible */
3986 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3987 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3988 trash.len += 29;
3989 } else {
3990 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3991 trash.len += 23;
3992 }
3993 stream_int_retnclose(txn->req.chn->prod, &trash);
3994 txn->req.chn->analysers = 0;
3995 }
3996
3997 if (!(s->flags & SN_ERR_MASK))
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3998 s->flags |= SN_ERR_LOCAL;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3999 if (!(s->flags & SN_FINST_MASK))
4000 s->flags |= SN_FINST_R;
4001
4002 return 1;
4003}
4004
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4005/* This stream analyser runs all HTTP request processing which is common to
4006 * frontends and backends, which means blocking ACLs, filters, connection-close,
4007 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4008 * 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]4009 * either needs more data or wants to immediately abort the request (eg: deny,
4010 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4011 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4012int 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]4013{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4014 struct http_txn *txn = &s->txn;
4015 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4016 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]4017 struct cond_wordlist *wl;
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4018 enum rule_result verdict;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4019
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4020 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4021 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4022 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4023 return 0;
4024 }
4025
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4026 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]4027 now_ms, __FUNCTION__,
4028 s,
4029 req,
4030 req->rex, req->wex,
4031 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4032 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]4033 req->analysers);
4034
Willy Tarreau65410832014-04-28 21:25:43 +0200[diff] [blame]4035 /* just in case we have some per-backend tracking */
4036 session_inc_be_http_req_ctr(s);
4037
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4038 /* evaluate http-request rules */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4039 if (!LIST_ISEMPTY(&px->http_req_rules)) {
4040 verdict = http_req_get_intercept_rule(px, &px->http_req_rules, s, txn);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]4041
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4042 switch (verdict) {
4043 case HTTP_RULE_RES_CONT:
4044 case HTTP_RULE_RES_STOP: /* nothing to do */
4045 break;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4046
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4047 case HTTP_RULE_RES_DENY: /* deny or tarpit */
4048 if (txn->flags & TX_CLTARPIT)
4049 goto tarpit;
4050 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4051
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4052 case HTTP_RULE_RES_ABRT: /* abort request, response already sent. Eg: auth */
4053 goto return_prx_cond;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4054
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4055 case HTTP_RULE_RES_DONE: /* OK, but terminate request processing (eg: redirect) */
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4056 goto done;
4057
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4058 case HTTP_RULE_RES_BADREQ: /* failed with a bad request */
4059 goto return_bad_req;
4060 }
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4061 }
4062
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4063 /* OK at this stage, we know that the request was accepted according to
4064 * the http-request rules, we can check for the stats. Note that the
4065 * URI is detected *before* the req* rules in order not to be affected
4066 * by a possible reqrep, while they are processed *after* so that a
4067 * reqdeny can still block them. This clearly needs to change in 1.6!
4068 */
4069 if (stats_check_uri(s->rep->prod, txn, px)) {
4070 s->target = &http_stats_applet.obj_type;
4071 if (unlikely(!stream_int_register_handler(s->rep->prod, objt_applet(s->target)))) {
4072 txn->status = 500;
4073 s->logs.tv_request = now;
4074 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]4075
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4076 if (!(s->flags & SN_ERR_MASK))
4077 s->flags |= SN_ERR_RESOURCE;
4078 goto return_prx_cond;
4079 }
4080
4081 /* parse the whole stats request and extract the relevant information */
4082 http_handle_stats(s, req);
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4083 verdict = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, txn);
4084 /* not all actions implemented: deny, allow, auth */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4085
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4086 if (verdict == HTTP_RULE_RES_DENY) /* stats http-request deny */
4087 goto deny;
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4088
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4089 if (verdict == HTTP_RULE_RES_ABRT) /* stats auth / stats http-request auth */
4090 goto return_prx_cond;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]4091 }
4092
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4093 /* evaluate the req* rules except reqadd */
4094 if (px->req_exp != NULL) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]4095 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4096 goto return_bad_req;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4097
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4098 if (txn->flags & TX_CLDENY)
4099 goto deny;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]4100
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4101 if (txn->flags & TX_CLTARPIT)
4102 goto tarpit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4103 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4104
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4105 /* add request headers from the rule sets in the same order */
4106 list_for_each_entry(wl, &px->req_add, list) {
4107 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]4108 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]4109 ret = acl_pass(ret);
4110 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
4111 ret = !ret;
4112 if (!ret)
4113 continue;
4114 }
4115
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4116 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4117 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]4118 }
4119
Willy Tarreau52542592014-04-28 18:33:26 +0200[diff] [blame]4120
4121 /* Proceed with the stats now. */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]4122 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]4123 /* process the stats request now */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]4124 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
4125 s->fe->fe_counters.intercepted_req++;
4126
4127 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
4128 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
4129 if (!(s->flags & SN_FINST_MASK))
4130 s->flags |= SN_FINST_R;
4131
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]4132 /* we may want to compress the stats page */
4133 if (s->fe->comp || s->be->comp)
4134 select_compression_request_header(s, req->buf);
4135
4136 /* enable the minimally required analyzers to handle keep-alive and compression on the HTTP response */
Willy Tarreau5506e3f2014-11-20 22:23:10 +0100[diff] [blame]4137 req->analysers = (req->analysers & AN_REQ_HTTP_BODY) | AN_REQ_HTTP_XFER_BODY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4138 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4139 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]4140
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4141 /* check whether we have some ACLs set to redirect this request */
4142 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4143 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4144 int ret;
4145
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]4146 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]4147 ret = acl_pass(ret);
4148 if (rule->cond->pol == ACL_COND_UNLESS)
4149 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4150 if (!ret)
4151 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]4152 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]4153 if (!http_apply_redirect_rule(rule, s, txn))
4154 goto return_bad_req;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4155 goto done;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4156 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4157
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4158 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
4159 * If this happens, then the data will not come immediately, so we must
4160 * send all what we have without waiting. Note that due to the small gain
4161 * 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]4162 * 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]4163 * itself once used.
4164 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4165 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]4166
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4167 done: /* done with this analyser, continue with next ones that the calling
4168 * points will have set, if any.
4169 */
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4170 req->analyse_exp = TICK_ETERNITY;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4171 done_without_exp: /* done with this analyser, but dont reset the analyse_exp. */
4172 req->analysers &= ~an_bit;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4173 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]4174
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4175 tarpit:
4176 /* When a connection is tarpitted, we use the tarpit timeout,
4177 * which may be the same as the connect timeout if unspecified.
4178 * If unset, then set it to zero because we really want it to
4179 * eventually expire. We build the tarpit as an analyser.
4180 */
4181 channel_erase(s->req);
4182
4183 /* wipe the request out so that we can drop the connection early
4184 * if the client closes first.
4185 */
4186 channel_dont_connect(req);
4187 req->analysers = 0; /* remove switching rules etc... */
4188 req->analysers |= AN_REQ_HTTP_TARPIT;
4189 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
4190 if (!req->analyse_exp)
4191 req->analyse_exp = tick_add(now_ms, 0);
4192 session_inc_http_err_ctr(s);
4193 s->fe->fe_counters.denied_req++;
4194 if (s->fe != s->be)
4195 s->be->be_counters.denied_req++;
4196 if (s->listener->counters)
4197 s->listener->counters->denied_req++;
Thierry FOURNIER7566e302014-08-22 06:55:26 +0200[diff] [blame]4198 goto done_without_exp;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4199
4200 deny: /* this request was blocked (denied) */
Willy Tarreau0b748332014-04-29 00:13:29 +0200[diff] [blame]4201 txn->flags |= TX_CLDENY;
Willy Tarreaubbba2a82014-04-28 13:57:26 +0200[diff] [blame]4202 txn->status = 403;
4203 s->logs.tv_request = now;
4204 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
4205 session_inc_http_err_ctr(s);
4206 s->fe->fe_counters.denied_req++;
4207 if (s->fe != s->be)
4208 s->be->be_counters.denied_req++;
4209 if (s->listener->counters)
4210 s->listener->counters->denied_req++;
4211 goto return_prx_cond;
4212
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4213 return_bad_req:
4214 /* We centralize bad requests processing here */
4215 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
4216 /* we detected a parsing error. We want to archive this request
4217 * in the dedicated proxy area for later troubleshooting.
4218 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4219 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]4220 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]4221
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4222 txn->req.msg_state = HTTP_MSG_ERROR;
4223 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4224 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4225
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4226 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4227 if (s->listener->counters)
4228 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]4229
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4230 return_prx_cond:
4231 if (!(s->flags & SN_ERR_MASK))
4232 s->flags |= SN_ERR_PRXCOND;
4233 if (!(s->flags & SN_FINST_MASK))
4234 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]4235
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4236 req->analysers = 0;
4237 req->analyse_exp = TICK_ETERNITY;
4238 return 0;
4239}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4240
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4241/* This function performs all the processing enabled for the current request.
4242 * It returns 1 if the processing can continue on next analysers, or zero if it
4243 * needs more data, encounters an error, or wants to immediately abort the
4244 * request. It relies on buffers flags, and updates s->req->analysers.
4245 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4246int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4247{
4248 struct http_txn *txn = &s->txn;
4249 struct http_msg *msg = &txn->req;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4250 struct connection *cli_conn = objt_conn(req->prod->end);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4251
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]4252 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4253 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4254 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]4255 return 0;
4256 }
4257
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4258 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]4259 now_ms, __FUNCTION__,
4260 s,
4261 req,
4262 req->rex, req->wex,
4263 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4264 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]4265 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4266
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]4267 if (s->fe->comp || s->be->comp)
4268 select_compression_request_header(s, req->buf);
4269
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4270 /*
4271 * Right now, we know that we have processed the entire headers
4272 * and that unwanted requests have been filtered out. We can do
4273 * whatever we want with the remaining request. Also, now we
4274 * may have separate values for ->fe, ->be.
4275 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4276
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4277 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4278 * If HTTP PROXY is set we simply get remote server address parsing
4279 * incoming request. Note that this requires that a connection is
4280 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4281 */
4282 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4283 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4284 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4285
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]4286 /* Note that for now we don't reuse existing proxy connections */
4287 if (unlikely((conn = si_alloc_conn(req->cons, 0)) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4288 txn->req.msg_state = HTTP_MSG_ERROR;
4289 txn->status = 500;
4290 req->analysers = 0;
4291 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
4292
4293 if (!(s->flags & SN_ERR_MASK))
4294 s->flags |= SN_ERR_RESOURCE;
4295 if (!(s->flags & SN_FINST_MASK))
4296 s->flags |= SN_FINST_R;
4297
4298 return 0;
4299 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4300
4301 path = http_get_path(txn);
4302 url2sa(req->buf->p + msg->sl.rq.u,
4303 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]4304 &conn->addr.to, NULL);
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]4305 /* if the path was found, we have to remove everything between
4306 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
4307 * found, we need to replace from req->buf->p + msg->sl.rq.u for
4308 * u_l characters by a single "/".
4309 */
4310 if (path) {
4311 char *cur_ptr = req->buf->p;
4312 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4313 int delta;
4314
4315 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
4316 http_msg_move_end(&txn->req, delta);
4317 cur_end += delta;
4318 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4319 goto return_bad_req;
4320 }
4321 else {
4322 char *cur_ptr = req->buf->p;
4323 char *cur_end = cur_ptr + txn->req.sl.rq.l;
4324 int delta;
4325
4326 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
4327 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
4328 http_msg_move_end(&txn->req, delta);
4329 cur_end += delta;
4330 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
4331 goto return_bad_req;
4332 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4333 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]4334
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4335 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4336 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4337 * Note that doing so might move headers in the request, but
4338 * the fields will stay coherent and the URI will not move.
4339 * This should only be performed in the backend.
4340 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]4341 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4342 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
4343 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]4344
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4345 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4346 * 8: the appsession cookie was looked up very early in 1.2,
4347 * so let's do the same now.
4348 */
4349
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4350 /* It needs to look into the URI unless persistence must be ignored */
4351 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4352 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]4353 }
4354
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4355 /* add unique-id if "header-unique-id" is specified */
4356
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4357 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
4358 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
4359 goto return_bad_req;
4360 s->unique_id[0] = '\0';
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4361 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]4362 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4363
4364 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4365 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
4366 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]4367 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4368 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]4369 goto return_bad_req;
4370 }
4371
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]4372 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4373 * 9: add X-Forwarded-For if either the frontend or the backend
4374 * asks for it.
4375 */
4376 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4377 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4378 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]4379 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
4380 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]4381 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]4382 /* The header is set to be added only if none is present
4383 * and we found it, so don't do anything.
4384 */
4385 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4386 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4387 /* Add an X-Forwarded-For header unless the source IP is
4388 * in the 'except' network range.
4389 */
4390 if ((!s->fe->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4391 (((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]4392 != s->fe->except_net.s_addr) &&
4393 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4394 (((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]4395 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4396 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4397 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4398 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4399
4400 /* Note: we rely on the backend to get the header name to be used for
4401 * x-forwarded-for, because the header is really meant for the backends.
4402 * However, if the backend did not specify any option, we have to rely
4403 * on the frontend's header name.
4404 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4405 if (s->be->fwdfor_hdr_len) {
4406 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4407 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]4408 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4409 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4410 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4411 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4412 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]4413
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4414 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]4415 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]4416 }
4417 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4418 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4419 /* FIXME: for the sake of completeness, we should also support
4420 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4421 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4422 int len;
4423 char pn[INET6_ADDRSTRLEN];
4424 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4425 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4426 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4427
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4428 /* Note: we rely on the backend to get the header name to be used for
4429 * x-forwarded-for, because the header is really meant for the backends.
4430 * However, if the backend did not specify any option, we have to rely
4431 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4432 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4433 if (s->be->fwdfor_hdr_len) {
4434 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4435 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4436 } else {
4437 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4438 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]4439 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4440 len += snprintf(trash.str + len, trash.size - len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4441
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4442 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]4443 goto return_bad_req;
4444 }
4445 }
4446
4447 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4448 * 10: add X-Original-To if either the frontend or the backend
4449 * asks for it.
4450 */
4451 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
4452
4453 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4454 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4455 /* Add an X-Original-To header unless the destination IP is
4456 * in the 'except' network range.
4457 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4458 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4459
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4460 if (cli_conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]4461 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4462 (((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]4463 != s->fe->except_to.s_addr) &&
4464 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4465 (((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]4466 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4467 int len;
4468 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4469 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4470
4471 /* Note: we rely on the backend to get the header name to be used for
4472 * x-original-to, because the header is really meant for the backends.
4473 * However, if the backend did not specify any option, we have to rely
4474 * on the frontend's header name.
4475 */
4476 if (s->be->orgto_hdr_len) {
4477 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4478 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]4479 } else {
4480 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4481 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]4482 }
Willy Tarreaue9187f82014-04-14 15:27:14 +0200[diff] [blame]4483 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]4484
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4485 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]4486 goto return_bad_req;
4487 }
4488 }
4489 }
4490
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]4491 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
4492 * If an "Upgrade" token is found, the header is left untouched in order not to have
4493 * to deal with some servers bugs : some of them fail an Upgrade if anything but
4494 * "Upgrade" is present in the Connection header.
4495 */
4496 if (!(txn->flags & TX_HDR_CONN_UPG) &&
4497 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4498 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4499 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4500 unsigned int want_flags = 0;
4501
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4502 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4503 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4504 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
4505 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4506 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4507 want_flags |= TX_CON_CLO_SET;
4508 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4509 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame]4510 ((s->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
4511 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]4512 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4513 want_flags |= TX_CON_KAL_SET;
4514 }
4515
4516 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4517 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4518 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4519
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]4520
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4521 /* If we have no server assigned yet and we're balancing on url_param
4522 * with a POST request, we may be interested in checking the body for
4523 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4524 */
4525 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
4526 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4527 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4528 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4529 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4530 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4531
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4532 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4533 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4534#ifdef TCP_QUICKACK
4535 /* We expect some data from the client. Unless we know for sure
4536 * we already have a full request, we have to re-enable quick-ack
4537 * in case we previously disabled it, otherwise we might cause
4538 * the client to delay further data.
4539 */
4540 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4541 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4542 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4543 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4544 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4545#endif
4546 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4547
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4548 /*************************************************************
4549 * OK, that's finished for the headers. We have done what we *
4550 * could. Let's switch to the DATA state. *
4551 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4552 req->analyse_exp = TICK_ETERNITY;
4553 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4554
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4555 /* if the server closes the connection, we want to immediately react
4556 * and close the socket to save packets and syscalls.
4557 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4558 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
4559 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4560
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4561 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4562 /* OK let's go on with the BODY now */
4563 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4564
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4565 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4566 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4567 /* we detected a parsing error. We want to archive this request
4568 * in the dedicated proxy area for later troubleshooting.
4569 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4570 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]4571 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4572
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4573 txn->req.msg_state = HTTP_MSG_ERROR;
4574 txn->status = 400;
4575 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4576 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4577
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4578 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4579 if (s->listener->counters)
4580 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4581
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4582 if (!(s->flags & SN_ERR_MASK))
4583 s->flags |= SN_ERR_PRXCOND;
4584 if (!(s->flags & SN_FINST_MASK))
4585 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4586 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4587}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4588
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4589/* This function is an analyser which processes the HTTP tarpit. It always
4590 * returns zero, at the beginning because it prevents any other processing
4591 * from occurring, and at the end because it terminates the request.
4592 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4593int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4594{
4595 struct http_txn *txn = &s->txn;
4596
4597 /* This connection is being tarpitted. The CLIENT side has
4598 * already set the connect expiration date to the right
4599 * timeout. We just have to check that the client is still
4600 * there and that the timeout has not expired.
4601 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4602 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4603 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4604 !tick_is_expired(req->analyse_exp, now_ms))
4605 return 0;
4606
4607 /* We will set the queue timer to the time spent, just for
4608 * logging purposes. We fake a 500 server error, so that the
4609 * attacker will not suspect his connection has been tarpitted.
4610 * It will not cause trouble to the logs because we can exclude
4611 * the tarpitted connections by filtering on the 'PT' status flags.
4612 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4613 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4614
4615 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4616 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4617 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4618
4619 req->analysers = 0;
4620 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4621
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4622 if (!(s->flags & SN_ERR_MASK))
4623 s->flags |= SN_ERR_PRXCOND;
4624 if (!(s->flags & SN_FINST_MASK))
4625 s->flags |= SN_FINST_T;
4626 return 0;
4627}
4628
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4629/* This function is an analyser which waits for the HTTP request body. It waits
4630 * for either the buffer to be full, or the full advertised contents to have
4631 * reached the buffer. It must only be called after the standard HTTP request
4632 * processing has occurred, because it expects the request to be parsed and will
4633 * look for the Expect header. It may send a 100-Continue interim response. It
4634 * takes in input any state starting from HTTP_MSG_BODY and leaves with one of
4635 * HTTP_MSG_CHK_SIZE, HTTP_MSG_DATA or HTTP_MSG_TRAILERS. It returns zero if it
4636 * needs to read more data, or 1 once it has completed its analysis.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4637 */
Willy Tarreau5a8f9472014-04-10 11:16:06 +0200[diff] [blame]4638int http_wait_for_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4639{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4640 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4641 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4642
4643 /* We have to parse the HTTP request body to find any required data.
4644 * "balance url_param check_post" should have been the only way to get
4645 * into this. We were brought here after HTTP header analysis, so all
4646 * related structures are ready.
4647 */
4648
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4649 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
4650 /* This is the first call */
4651 if (msg->msg_state < HTTP_MSG_BODY)
4652 goto missing_data;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4653
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4654 if (msg->msg_state < HTTP_MSG_100_SENT) {
4655 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4656 * send an HTTP/1.1 100 Continue intermediate response.
4657 */
4658 if (msg->flags & HTTP_MSGF_VER_11) {
4659 struct hdr_ctx ctx;
4660 ctx.idx = 0;
4661 /* Expect is allowed in 1.1, look for it */
4662 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
4663 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
4664 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
4665 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4666 }
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4667 msg->msg_state = HTTP_MSG_100_SENT;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4668 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4669
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4670 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4671 * req->buf->p still points to the beginning of the message. We
4672 * must save the body in msg->next because it survives buffer
4673 * re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4674 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4675 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4676
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4677 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4678 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4679 else
4680 msg->msg_state = HTTP_MSG_DATA;
4681 }
4682
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4683 if (!(msg->flags & HTTP_MSGF_TE_CHNK)) {
4684 /* We're in content-length mode, we just have to wait for enough data. */
4685 if (req->buf->i - msg->sov < msg->body_len)
4686 goto missing_data;
4687
4688 /* OK we have everything we need now */
4689 goto http_end;
4690 }
4691
4692 /* OK here we're parsing a chunked-encoded message */
4693
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4694 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4695 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4696 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4697 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4698 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4699 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4700
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4701 if (!ret)
4702 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4703 else if (ret < 0) {
4704 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4705 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4706 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4707 }
4708
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4709 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4710 * 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]4711 * least a whole chunk or the whole content length bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4712 */
Willy Tarreau890988f2014-04-10 11:59:33 +0200[diff] [blame]4713 if (msg->msg_state == HTTP_MSG_TRAILERS)
4714 goto http_end;
4715
Willy Tarreau226071e2014-04-10 11:55:45 +0200[diff] [blame]4716 if (req->buf->i - msg->sov >= msg->body_len) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4717 goto http_end;
4718
4719 missing_data:
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4720 /* we get here if we need to wait for more data. If the buffer is full,
4721 * we have the maximum we can expect.
4722 */
4723 if (buffer_full(req->buf, global.tune.maxrewrite))
4724 goto http_end;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4725
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4726 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4727 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4728 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4729
4730 if (!(s->flags & SN_ERR_MASK))
4731 s->flags |= SN_ERR_CLITO;
4732 if (!(s->flags & SN_FINST_MASK))
4733 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4734 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4735 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4736
4737 /* we get here if we need to wait for more data */
Willy Tarreau31a19952014-04-10 11:50:37 +0200[diff] [blame]4738 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR))) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4739 /* Not enough data. We'll re-use the http-request
4740 * timeout here. Ideally, we should set the timeout
4741 * relative to the accept() date. We just set the
4742 * request timeout once at the beginning of the
4743 * request.
4744 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4745 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4746 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4747 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4748 return 0;
4749 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4750
4751 http_end:
4752 /* The situation will not evolve, so let's give up on the analysis. */
4753 s->logs.tv_request = now; /* update the request timer to reflect full request */
4754 req->analysers &= ~an_bit;
4755 req->analyse_exp = TICK_ETERNITY;
4756 return 1;
4757
4758 return_bad_req: /* let's centralize all bad requests */
4759 txn->req.msg_state = HTTP_MSG_ERROR;
4760 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4761 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4762
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4763 if (!(s->flags & SN_ERR_MASK))
4764 s->flags |= SN_ERR_PRXCOND;
4765 if (!(s->flags & SN_FINST_MASK))
4766 s->flags |= SN_FINST_R;
4767
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4768 return_err_msg:
4769 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4770 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4771 if (s->listener->counters)
4772 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4773 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4774}
4775
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4776/* send a server's name with an outgoing request over an established connection.
4777 * Note: this function is designed to be called once the request has been scheduled
4778 * for being forwarded. This is the reason why it rewinds the buffer before
4779 * proceeding.
4780 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4781int 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]4782
4783 struct hdr_ctx ctx;
4784
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4785 char *hdr_name = be->server_id_hdr_name;
4786 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4787 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4788 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4789 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4790
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4791 ctx.idx = 0;
4792
Willy Tarreau211cdec2014-04-17 20:18:08 +0200[diff] [blame]4793 old_o = http_hdr_rewind(&txn->req);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4794 if (old_o) {
4795 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4796 b_rew(chn->buf, old_o);
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4797 txn->req.next += old_o;
4798 txn->req.sov += old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4799 }
4800
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4801 old_i = chn->buf->i;
4802 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]4803 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4804 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4805 }
4806
4807 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4808 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4809 memcpy(hdr_val, hdr_name, hdr_name_len);
4810 hdr_val += hdr_name_len;
4811 *hdr_val++ = ':';
4812 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4813 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4814 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]4815
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4816 if (old_o) {
4817 /* If this was a forwarded request, we must readjust the amount of
4818 * data to be forwarded in order to take into account the size
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4819 * variations. Note that the current state is >= HTTP_MSG_BODY,
4820 * so we don't have to adjust ->sol.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4821 */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]4822 old_o += chn->buf->i - old_i;
4823 b_adv(chn->buf, old_o);
4824 txn->req.next -= old_o;
4825 txn->req.sov -= old_o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4826 }
4827
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4828 return 0;
4829}
4830
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4831/* Terminate current transaction and prepare a new one. This is very tricky
4832 * right now but it works.
4833 */
4834void http_end_txn_clean_session(struct session *s)
4835{
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4836 int prev_status = s->txn.status;
4837
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4838 /* FIXME: We need a more portable way of releasing a backend's and a
4839 * server's connections. We need a safer way to reinitialize buffer
4840 * flags. We also need a more accurate method for computing per-request
4841 * data.
4842 */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4843
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4844 /* unless we're doing keep-alive, we want to quickly close the connection
4845 * to the server.
4846 */
4847 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4848 !si_conn_ready(s->req->cons)) {
4849 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4850 si_shutr(s->req->cons);
4851 si_shutw(s->req->cons);
4852 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4853
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4854 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4855 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4856 if (unlikely(s->srv_conn))
4857 sess_change_server(s, NULL);
4858 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4859
4860 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4861 session_process_counters(s);
4862
4863 if (s->txn.status) {
4864 int n;
4865
4866 n = s->txn.status / 100;
4867 if (n < 1 || n > 5)
4868 n = 0;
4869
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4870 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4871 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4872 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4873 s->fe->fe_counters.p.http.comp_rsp++;
4874 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4875 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4876 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4877 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4878 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4879 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4880 s->be->be_counters.p.http.comp_rsp++;
4881 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4882 }
4883
4884 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4885 s->logs.bytes_in -= s->req->buf->i;
4886 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4887
4888 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4889 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4890 !(s->flags & SN_MONITOR) &&
4891 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4892 s->do_log(s);
4893 }
4894
Willy Tarreaud713bcc2014-06-25 15:36:04 +0200[diff] [blame]4895 /* stop tracking content-based counters */
4896 session_stop_content_counters(s);
Willy Tarreau4bfc5802014-06-17 12:19:18 +0200[diff] [blame]4897 session_update_time_stats(s);
4898
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4899 s->logs.accept_date = date; /* user-visible date for logging */
4900 s->logs.tv_accept = now; /* corrected date for internal use */
4901 tv_zero(&s->logs.tv_request);
4902 s->logs.t_queue = -1;
4903 s->logs.t_connect = -1;
4904 s->logs.t_data = -1;
4905 s->logs.t_close = 0;
4906 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4907 s->logs.srv_queue_size = 0; /* we will get this number soon */
4908
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4909 s->logs.bytes_in = s->req->total = s->req->buf->i;
4910 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4911
4912 if (s->pend_pos)
4913 pendconn_free(s->pend_pos);
4914
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4915 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4916 if (s->flags & SN_CURR_SESS) {
4917 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4918 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4919 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4920 if (may_dequeue_tasks(objt_server(s->target), s->be))
4921 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4922 }
4923
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4924 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4925
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4926 /* only release our endpoint if we don't intend to reuse the
4927 * connection.
4928 */
4929 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4930 !si_conn_ready(s->req->cons)) {
4931 si_release_endpoint(s->req->cons);
4932 }
4933
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4934 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4935 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4936 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4937 s->req->cons->exp = TICK_ETERNITY;
Willy Tarreauc9200962013-12-31 23:03:09 +0100[diff] [blame]4938 s->req->cons->flags &= SI_FL_DONT_WAKE; /* we're in the context of process_session */
Willy Tarreau9dc1c612014-09-01 20:35:55 +0200[diff] [blame]4939 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT|CF_WAKE_CONNECT|CF_WROTE_DATA);
4940 s->rep->flags &= ~(CF_SHUTR|CF_SHUTR_NOW|CF_READ_ATTACHED|CF_READ_ERROR|CF_READ_NOEXP|CF_STREAMER|CF_STREAMER_FAST|CF_WRITE_PARTIAL|CF_NEVER_WAIT|CF_WROTE_DATA);
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4941 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]4942 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE|SN_SRV_REUSED);
Cyril Bontéa83a50b2014-10-22 22:30:13 +0200[diff] [blame]4943 s->flags &= ~(SN_ERR_MASK|SN_FINST_MASK|SN_REDISP);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4944
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4945 s->txn.meth = 0;
4946 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4947 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4948
4949 if (prev_status == 401 || prev_status == 407) {
4950 /* In HTTP keep-alive mode, if we receive a 401, we still have
4951 * a chance of being able to send the visitor again to the same
4952 * server over the same connection. This is required by some
4953 * broken protocols such as NTLM, and anyway whenever there is
4954 * an opportunity for sending the challenge to the proper place,
4955 * it's better to do it (at least it helps with debugging).
4956 */
4957 s->txn.flags |= TX_PREFER_LAST;
4958 }
4959
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4960 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4961 s->req->cons->flags |= SI_FL_INDEP_STR;
4962
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4963 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4964 s->req->flags |= CF_NEVER_WAIT;
4965 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4966 }
4967
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4968 /* if the request buffer is not empty, it means we're
4969 * about to process another request, so send pending
4970 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4971 * Just don't do this if the buffer is close to be full,
4972 * because the request will wait for it to flush a little
4973 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4974 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4975 if (s->req->buf->i) {
4976 if (s->rep->buf->o &&
4977 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4978 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]4979 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4980 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4981
4982 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4983 channel_auto_read(s->req);
4984 channel_auto_close(s->req);
4985 channel_auto_read(s->rep);
4986 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4987
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]4988 /* we're in keep-alive with an idle connection, monitor it */
4989 si_idle_conn(s->req->cons);
4990
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4991 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4992 s->rep->analysers = 0;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4993}
4994
4995
4996/* This function updates the request state machine according to the response
4997 * state machine and buffer flags. It returns 1 if it changes anything (flag
4998 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4999 * it is only used to find when a request/response couple is complete. Both
5000 * this function and its equivalent should loop until both return zero. It
5001 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5002 */
5003int http_sync_req_state(struct session *s)
5004{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5005 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5006 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5007 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5008 unsigned int old_state = txn->req.msg_state;
5009
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5010 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
5011 return 0;
5012
5013 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5014 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5015 * We can shut the read side unless we want to abort_on_close,
5016 * or we have a POST request. The issue with POST requests is
5017 * that some browsers still send a CRLF after the request, and
5018 * this CRLF must be read so that it does not remain in the kernel
5019 * buffers, otherwise a close could cause an RST on some systems
5020 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5021 * Note that if we're using keep-alive on the client side, we'd
5022 * rather poll now and keep the polling enabled for the whole
5023 * session's life than enabling/disabling it between each
5024 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5025 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5026 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5027 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5028 !(s->be->options & PR_O_ABRT_CLOSE) &&
5029 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5030 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5031
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5032 /* if the server closes the connection, we want to immediately react
5033 * and close the socket to save packets and syscalls.
5034 */
5035 chn->cons->flags |= SI_FL_NOHALF;
5036
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5037 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
5038 goto wait_other_side;
5039
5040 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
5041 /* The server has not finished to respond, so we
5042 * don't want to move in order not to upset it.
5043 */
5044 goto wait_other_side;
5045 }
5046
5047 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
5048 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5049 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5050 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5051 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5052 goto wait_other_side;
5053 }
5054
5055 /* When we get here, it means that both the request and the
5056 * response have finished receiving. Depending on the connection
5057 * mode, we'll have to wait for the last bytes to leave in either
5058 * direction, and sometimes for a close to be effective.
5059 */
5060
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5061 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5062 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5063 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
5064 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5065 }
5066 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5067 /* Option forceclose is set, or either side wants to close,
5068 * let's enforce it now that we're not expecting any new
5069 * data to come. The caller knows the session is complete
5070 * once both states are CLOSED.
5071 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5072 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5073 channel_shutr_now(chn);
5074 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5075 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5076 }
5077 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5078 /* The last possible modes are keep-alive and tunnel. Tunnel mode
5079 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5080 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5081 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
5082 channel_auto_read(chn);
5083 txn->req.msg_state = HTTP_MSG_TUNNEL;
5084 chn->flags |= CF_NEVER_WAIT;
5085 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5086 }
5087
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5088 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5089 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5090 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5091
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5092 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5093 txn->req.msg_state = HTTP_MSG_CLOSING;
5094 goto http_msg_closing;
5095 }
5096 else {
5097 txn->req.msg_state = HTTP_MSG_CLOSED;
5098 goto http_msg_closed;
5099 }
5100 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5101 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5102 }
5103
5104 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
5105 http_msg_closing:
5106 /* nothing else to forward, just waiting for the output buffer
5107 * to be empty and for the shutw_now to take effect.
5108 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5109 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5110 txn->req.msg_state = HTTP_MSG_CLOSED;
5111 goto http_msg_closed;
5112 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5113 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5114 txn->req.msg_state = HTTP_MSG_ERROR;
5115 goto wait_other_side;
5116 }
5117 }
5118
5119 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
5120 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]5121 /* see above in MSG_DONE why we only do this in these states */
5122 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
5123 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
5124 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]5125 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5126 goto wait_other_side;
5127 }
5128
5129 wait_other_side:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5130 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5131}
5132
5133
5134/* This function updates the response state machine according to the request
5135 * state machine and buffer flags. It returns 1 if it changes anything (flag
5136 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
5137 * it is only used to find when a request/response couple is complete. Both
5138 * this function and its equivalent should loop until both return zero. It
5139 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
5140 */
5141int http_sync_res_state(struct session *s)
5142{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5143 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5144 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5145 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5146 unsigned int old_state = txn->rsp.msg_state;
5147
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5148 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
5149 return 0;
5150
5151 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
5152 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5153 * still monitor the server connection for a possible close
5154 * while the request is being uploaded, so we don't disable
5155 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5156 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5157 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5158
5159 if (txn->req.msg_state == HTTP_MSG_ERROR)
5160 goto wait_other_side;
5161
5162 if (txn->req.msg_state < HTTP_MSG_DONE) {
5163 /* The client seems to still be sending data, probably
5164 * because we got an error response during an upload.
5165 * We have the choice of either breaking the connection
5166 * or letting it pass through. Let's do the later.
5167 */
5168 goto wait_other_side;
5169 }
5170
5171 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
5172 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5173 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5174 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5175 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5176 goto wait_other_side;
5177 }
5178
5179 /* When we get here, it means that both the request and the
5180 * response have finished receiving. Depending on the connection
5181 * mode, we'll have to wait for the last bytes to leave in either
5182 * direction, and sometimes for a close to be effective.
5183 */
5184
5185 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5186 /* Server-close mode : shut read and wait for the request
5187 * side to close its output buffer. The caller will detect
5188 * when we're in DONE and the other is in CLOSED and will
5189 * catch that for the final cleanup.
5190 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5191 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
5192 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5193 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5194 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5195 /* Option forceclose is set, or either side wants to close,
5196 * let's enforce it now that we're not expecting any new
5197 * data to come. The caller knows the session is complete
5198 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5199 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5200 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
5201 channel_shutr_now(chn);
5202 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]5203 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5204 }
5205 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5206 /* The last possible modes are keep-alive and tunnel. Tunnel will
5207 * need to forward remaining data. Keep-alive will need to monitor
5208 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5209 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5210 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5211 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5212 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
5213 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5214 }
5215
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5216 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5217 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5218 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5219 txn->rsp.msg_state = HTTP_MSG_CLOSING;
5220 goto http_msg_closing;
5221 }
5222 else {
5223 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5224 goto http_msg_closed;
5225 }
5226 }
5227 goto wait_other_side;
5228 }
5229
5230 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
5231 http_msg_closing:
5232 /* nothing else to forward, just waiting for the output buffer
5233 * to be empty and for the shutw_now to take effect.
5234 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5235 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5236 txn->rsp.msg_state = HTTP_MSG_CLOSED;
5237 goto http_msg_closed;
5238 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5239 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5240 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5241 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5242 if (objt_server(s->target))
5243 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5244 goto wait_other_side;
5245 }
5246 }
5247
5248 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
5249 http_msg_closed:
5250 /* drop any pending data */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5251 channel_truncate(chn);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5252 channel_auto_close(chn);
5253 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5254 goto wait_other_side;
5255 }
5256
5257 wait_other_side:
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]5258 /* We force the response to leave immediately if we're waiting for the
5259 * other side, since there is no pending shutdown to push it out.
5260 */
5261 if (!channel_is_empty(chn))
5262 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]5263 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5264}
5265
5266
5267/* Resync the request and response state machines. Return 1 if either state
5268 * changes.
5269 */
5270int http_resync_states(struct session *s)
5271{
5272 struct http_txn *txn = &s->txn;
5273 int old_req_state = txn->req.msg_state;
5274 int old_res_state = txn->rsp.msg_state;
5275
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5276 http_sync_req_state(s);
5277 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5278 if (!http_sync_res_state(s))
5279 break;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5280 if (!http_sync_req_state(s))
5281 break;
5282 }
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]5283
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5284 /* OK, both state machines agree on a compatible state.
5285 * There are a few cases we're interested in :
5286 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
5287 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
5288 * directions, so let's simply disable both analysers.
5289 * - HTTP_MSG_CLOSED on the response only means we must abort the
5290 * request.
5291 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
5292 * with server-close mode means we've completed one request and we
5293 * must re-initialize the server connection.
5294 */
5295
5296 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
5297 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
5298 (txn->req.msg_state == HTTP_MSG_CLOSED &&
5299 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
5300 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5301 channel_auto_close(s->req);
5302 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5303 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5304 channel_auto_close(s->rep);
5305 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5306 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5307 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
5308 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]5309 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]5310 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5311 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5312 channel_auto_close(s->rep);
5313 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]5314 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5315 channel_abort(s->req);
5316 channel_auto_close(s->req);
5317 channel_auto_read(s->req);
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5318 channel_truncate(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5319 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5320 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
5321 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5322 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]5323 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
5324 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
5325 /* server-close/keep-alive: terminate this transaction,
5326 * possibly killing the server connection and reinitialize
5327 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5328 */
5329 http_end_txn_clean_session(s);
5330 }
5331
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5332 return txn->req.msg_state != old_req_state ||
5333 txn->rsp.msg_state != old_res_state;
5334}
5335
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5336/* This function is an analyser which forwards request body (including chunk
5337 * sizes if any). It is called as soon as we must forward, even if we forward
5338 * zero byte. The only situation where it must not be called is when we're in
5339 * tunnel mode and we want to forward till the close. It's used both to forward
5340 * remaining data and to resync after end of body. It expects the msg_state to
5341 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5342 * 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]5343 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5344 * bytes of pending data + the headers if not already done.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5345 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5346int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5347{
5348 struct http_txn *txn = &s->txn;
5349 struct http_msg *msg = &s->txn.req;
5350
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5351 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5352 return 0;
5353
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5354 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]5355 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5356 /* Output closed while we were sending data. We must abort and
5357 * wake the other side up.
5358 */
5359 msg->msg_state = HTTP_MSG_ERROR;
5360 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5361 return 1;
5362 }
5363
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5364 /* Note that we don't have to send 100-continue back because we don't
5365 * need the data to complete our job, and it's up to the server to
5366 * decide whether to return 100, 417 or anything else in return of
5367 * an "Expect: 100-continue" header.
5368 */
5369
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5370 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5371 /* we have msg->sov which points to the first byte of message
5372 * body, and req->buf.p still points to the beginning of the
5373 * message. We forward the headers now, as we don't need them
5374 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5375 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5376 b_adv(req->buf, msg->sov);
5377 msg->next -= msg->sov;
5378 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5379
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]5380 /* The previous analysers guarantee that the state is somewhere
5381 * between MSG_BODY and the first MSG_DATA. So msg->sol and
5382 * msg->next are always correct.
5383 */
5384 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
5385 if (msg->flags & HTTP_MSGF_TE_CHNK)
5386 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
5387 else
5388 msg->msg_state = HTTP_MSG_DATA;
5389 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5390 }
5391
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5392 /* Some post-connect processing might want us to refrain from starting to
5393 * forward data. Currently, the only reason for this is "balance url_param"
5394 * whichs need to parse/process the request after we've enabled forwarding.
5395 */
5396 if (unlikely(msg->flags & HTTP_MSGF_WAIT_CONN)) {
5397 if (!(s->rep->flags & CF_READ_ATTACHED)) {
5398 channel_auto_connect(req);
Willy Tarreau644c1012014-04-30 18:11:11 +0200[diff] [blame]5399 req->flags |= CF_WAKE_CONNECT;
Willy Tarreau7ba23542014-04-17 21:50:00 +0200[diff] [blame]5400 goto missing_data;
5401 }
5402 msg->flags &= ~HTTP_MSGF_WAIT_CONN;
5403 }
5404
Willy Tarreau80a92c02014-03-12 10:41:13 +0100[diff] [blame]5405 /* in most states, we should abort in case of early close */
5406 channel_auto_close(req);
5407
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]5408 if (req->to_forward) {
5409 /* We can't process the buffer's contents yet */
5410 req->flags |= CF_WAKE_WRITE;
5411 goto missing_data;
5412 }
5413
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5414 while (1) {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5415 if (msg->msg_state == HTTP_MSG_DATA) {
5416 /* must still forward */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5417 /* we may have some pending data starting at req->buf->p */
5418 if (msg->chunk_len > req->buf->i - msg->next) {
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5419 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5420 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]5421 }
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5422 msg->next += msg->chunk_len;
5423 msg->chunk_len = 0;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5424
5425 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5426 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5427 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5428 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5429 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5430 }
5431 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5432 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]5433 * set ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5434 * TRAILERS state.
5435 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5436 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5437
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5438 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5439 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5440 else if (ret < 0) {
5441 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5442 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5443 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]5444 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5445 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5446 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5447 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5448 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5449 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5450 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5451
5452 if (ret == 0)
5453 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5454 else if (ret < 0) {
5455 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5456 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5457 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]5458 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5459 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5460 /* we're in MSG_CHUNK_SIZE now */
5461 }
5462 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]5463 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5464
5465 if (ret == 0)
5466 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5467 else if (ret < 0) {
5468 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5469 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5470 http_capture_bad_message(&s->fe->invalid_req, s, msg, HTTP_MSG_TRAILERS, s->be);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5471 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5472 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5473 /* we're in HTTP_MSG_DONE now */
5474 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5475 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5476 int old_state = msg->msg_state;
5477
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5478 /* other states, DONE...TUNNEL */
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5479
5480 /* we may have some pending data starting at req->buf->p
5481 * such as last chunk of data or trailers.
5482 */
5483 b_adv(req->buf, msg->next);
Willy Tarreau9dc1c612014-09-01 20:35:55 +0200[diff] [blame]5484 if (unlikely(!(s->req->flags & CF_WROTE_DATA)))
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5485 msg->sov -= msg->next;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5486 msg->next = 0;
5487
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5488 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5489 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5490 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5491 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5492 if (http_resync_states(s)) {
5493 /* some state changes occurred, maybe the analyser
5494 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]5495 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5496 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5497 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5498 /* request errors are most likely due to
5499 * the server aborting the transfer.
5500 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5501 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5502 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5503 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5504 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5505 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5506 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5507 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5508 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5509
5510 /* If "option abortonclose" is set on the backend, we
5511 * want to monitor the client's connection and forward
5512 * any shutdown notification to the server, which will
5513 * decide whether to close or to go on processing the
5514 * request.
5515 */
5516 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5517 channel_auto_read(req);
5518 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5519 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5520 else if (s->txn.meth == HTTP_METH_POST) {
5521 /* POST requests may require to read extra CRLF
5522 * sent by broken browsers and which could cause
5523 * an RST to be sent upon close on some systems
5524 * (eg: Linux).
5525 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5526 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]5527 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]5528
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5529 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5530 }
5531 }
5532
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5533 missing_data:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5534 /* we may have some pending data starting at req->buf->p */
5535 b_adv(req->buf, msg->next);
Willy Tarreau9dc1c612014-09-01 20:35:55 +0200[diff] [blame]5536 if (unlikely(!(s->req->flags & CF_WROTE_DATA)))
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]5537 msg->sov -= msg->next + MIN(msg->chunk_len, req->buf->i);
5538
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5539 msg->next = 0;
5540 msg->chunk_len -= channel_forward(req, msg->chunk_len);
5541
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5542 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5543 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5544 if (!(s->flags & SN_ERR_MASK))
5545 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5546 if (!(s->flags & SN_FINST_MASK)) {
5547 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5548 s->flags |= SN_FINST_H;
5549 else
5550 s->flags |= SN_FINST_D;
5551 }
5552
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5553 s->fe->fe_counters.cli_aborts++;
5554 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5555 if (objt_server(s->target))
5556 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5557
5558 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5559 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5560
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5561 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5562 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5563 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5564
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5565 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5566 * 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]5567 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5568 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5569 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5570
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5571 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5572 * 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]5573 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5574 * modes are already handled by the stream sock layer. We must not do
5575 * this in content-length mode because it could present the MSG_MORE
5576 * flag with the last block of forwarded data, which would cause an
5577 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5578 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5579 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5580 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5581
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5582 return 0;
5583
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5584 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5585 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5586 if (s->listener->counters)
5587 s->listener->counters->failed_req++;
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5588
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5589 return_bad_req_stats_ok:
Willy Tarreaubed410e2014-04-22 08:19:34 +0200[diff] [blame]5590 /* we may have some pending data starting at req->buf->p */
5591 b_adv(req->buf, msg->next);
5592 msg->next = 0;
5593
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5594 txn->req.msg_state = HTTP_MSG_ERROR;
5595 if (txn->status) {
5596 /* Note: we don't send any error if some data were already sent */
5597 stream_int_retnclose(req->prod, NULL);
5598 } else {
5599 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5600 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5601 }
5602 req->analysers = 0;
5603 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]5604
5605 if (!(s->flags & SN_ERR_MASK))
5606 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5607 if (!(s->flags & SN_FINST_MASK)) {
5608 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5609 s->flags |= SN_FINST_H;
5610 else
5611 s->flags |= SN_FINST_D;
5612 }
5613 return 0;
5614
5615 aborted_xfer:
5616 txn->req.msg_state = HTTP_MSG_ERROR;
5617 if (txn->status) {
5618 /* Note: we don't send any error if some data were already sent */
5619 stream_int_retnclose(req->prod, NULL);
5620 } else {
5621 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5622 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5623 }
5624 req->analysers = 0;
5625 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5626
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5627 s->fe->fe_counters.srv_aborts++;
5628 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5629 if (objt_server(s->target))
5630 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5631
5632 if (!(s->flags & SN_ERR_MASK))
5633 s->flags |= SN_ERR_SRVCL;
5634 if (!(s->flags & SN_FINST_MASK)) {
5635 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5636 s->flags |= SN_FINST_H;
5637 else
5638 s->flags |= SN_FINST_D;
5639 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5640 return 0;
5641}
5642
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5643/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5644 * processing can continue on next analysers, or zero if it either needs more
5645 * data or wants to immediately abort the response (eg: timeout, error, ...). It
5646 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
5647 * when it has nothing left to do, and may remove any analyser when it wants to
5648 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5649 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5650int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5651{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5652 struct http_txn *txn = &s->txn;
5653 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5654 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5655 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5656 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5657 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5658
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5659 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]5660 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5661 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5662 rep,
5663 rep->rex, rep->wex,
5664 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5665 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5666 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5667
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5668 /*
5669 * Now parse the partial (or complete) lines.
5670 * We will check the response syntax, and also join multi-line
5671 * headers. An index of all the lines will be elaborated while
5672 * parsing.
5673 *
5674 * For the parsing, we use a 28 states FSM.
5675 *
5676 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5677 * rep->buf->p = beginning of response
5678 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5679 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5680 * msg->eol = end of current header or line (LF or CRLF)
5681 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5682 */
5683
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5684 next_one:
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5685 /* There's a protected area at the end of the buffer for rewriting
5686 * purposes. We don't want to start to parse the request if the
5687 * protected area is affected, because we may have to move processed
5688 * data later, which is much more complicated.
5689 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5690 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreauba0902e2015-01-13 14:39:16 +0100[diff] [blame]5691 if (unlikely(!channel_is_rewritable(rep))) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5692 /* some data has still not left the buffer, wake us once that's done */
5693 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5694 goto abort_response;
5695 channel_dont_close(rep);
5696 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5697 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5698 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5699 }
5700
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5701 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5702 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5703 buffer_slow_realign(rep->buf);
5704
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5705 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5706 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5707 }
5708
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5709 /* 1: we might have to print this header in debug mode */
5710 if (unlikely((global.mode & MODE_DEBUG) &&
5711 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau7d59e902014-10-21 19:36:09 +0200[diff] [blame]5712 msg->msg_state >= HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5713 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5714
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5715 sol = rep->buf->p;
5716 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5717 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5718
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5719 sol += hdr_idx_first_pos(&txn->hdr_idx);
5720 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5721
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5722 while (cur_idx) {
5723 eol = sol + txn->hdr_idx.v[cur_idx].len;
5724 debug_hdr("srvhdr", s, sol, eol);
5725 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5726 cur_idx = txn->hdr_idx.v[cur_idx].next;
5727 }
5728 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5729
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5730 /*
5731 * Now we quickly check if we have found a full valid response.
5732 * If not so, we check the FD and buffer states before leaving.
5733 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5734 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5735 * responses are checked first.
5736 *
5737 * Depending on whether the client is still there or not, we
5738 * may send an error response back or not. Note that normally
5739 * we should only check for HTTP status there, and check I/O
5740 * errors somewhere else.
5741 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5742
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5743 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5744 /* Invalid response */
5745 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5746 /* we detected a parsing error. We want to archive this response
5747 * in the dedicated proxy area for later troubleshooting.
5748 */
5749 hdr_response_bad:
5750 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5751 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5752
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5753 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5754 if (objt_server(s->target)) {
5755 objt_server(s->target)->counters.failed_resp++;
5756 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5757 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5758 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5759 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5760 rep->analysers = 0;
5761 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5762 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5763 channel_truncate(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5764 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5765
5766 if (!(s->flags & SN_ERR_MASK))
5767 s->flags |= SN_ERR_PRXCOND;
5768 if (!(s->flags & SN_FINST_MASK))
5769 s->flags |= SN_FINST_H;
5770
5771 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5772 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5773
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5774 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5775 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5776 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5777 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5778 goto hdr_response_bad;
5779 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5780
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5781 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5782 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5783 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5784 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]5785 else if (txn->flags & TX_NOT_FIRST)
5786 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5787
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5788 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5789 if (objt_server(s->target)) {
5790 objt_server(s->target)->counters.failed_resp++;
5791 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5792 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5793
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5794 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5795 rep->analysers = 0;
5796 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5797 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5798 channel_truncate(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5799 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5800
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5801 if (!(s->flags & SN_ERR_MASK))
5802 s->flags |= SN_ERR_SRVCL;
5803 if (!(s->flags & SN_FINST_MASK))
5804 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5805 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5806 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5807
Willy Tarreau6f0a7ba2014-06-23 15:22:31 +0200[diff] [blame]5808 /* read timeout : return a 504 to the client. */
5809 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5810 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5811 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]5812 else if (txn->flags & TX_NOT_FIRST)
5813 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5814
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5815 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5816 if (objt_server(s->target)) {
5817 objt_server(s->target)->counters.failed_resp++;
5818 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5819 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5820
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5821 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5822 rep->analysers = 0;
5823 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5824 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5825 channel_truncate(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5826 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5827
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5828 if (!(s->flags & SN_ERR_MASK))
5829 s->flags |= SN_ERR_SRVTO;
5830 if (!(s->flags & SN_FINST_MASK))
5831 s->flags |= SN_FINST_H;
5832 return 0;
5833 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5834
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5835 /* client abort with an abortonclose */
5836 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5837 s->fe->fe_counters.cli_aborts++;
5838 s->be->be_counters.cli_aborts++;
5839 if (objt_server(s->target))
5840 objt_server(s->target)->counters.cli_aborts++;
5841
5842 rep->analysers = 0;
5843 channel_auto_close(rep);
5844
5845 txn->status = 400;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5846 channel_truncate(rep);
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5847 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5848
5849 if (!(s->flags & SN_ERR_MASK))
5850 s->flags |= SN_ERR_CLICL;
5851 if (!(s->flags & SN_FINST_MASK))
5852 s->flags |= SN_FINST_H;
5853
5854 /* process_session() will take care of the error */
5855 return 0;
5856 }
5857
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5858 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5859 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5860 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5861 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]5862 else if (txn->flags & TX_NOT_FIRST)
5863 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5864
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5865 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5866 if (objt_server(s->target)) {
5867 objt_server(s->target)->counters.failed_resp++;
5868 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5869 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5870
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5871 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5872 rep->analysers = 0;
5873 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5874 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]5875 channel_truncate(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5876 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5877
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5878 if (!(s->flags & SN_ERR_MASK))
5879 s->flags |= SN_ERR_SRVCL;
5880 if (!(s->flags & SN_FINST_MASK))
5881 s->flags |= SN_FINST_H;
5882 return 0;
5883 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5884
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5885 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5886 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5887 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5888 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]5889 else if (txn->flags & TX_NOT_FIRST)
5890 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5891
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5892 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5893 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5894 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5895
5896 if (!(s->flags & SN_ERR_MASK))
5897 s->flags |= SN_ERR_CLICL;
5898 if (!(s->flags & SN_FINST_MASK))
5899 s->flags |= SN_FINST_H;
5900
5901 /* process_session() will take care of the error */
5902 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5903 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5904
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5905 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5906 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5907 return 0;
5908 }
5909
5910 /* More interesting part now : we know that we have a complete
5911 * response which at least looks like HTTP. We have an indicator
5912 * of each header's length, so we can parse them quickly.
5913 */
5914
5915 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5916 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]5917
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5918 /*
5919 * 1: get the status code
5920 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5921 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5922 if (n < 1 || n > 5)
5923 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5924 /* when the client triggers a 4xx from the server, it's most often due
5925 * to a missing object or permission. These events should be tracked
5926 * because if they happen often, it may indicate a brute force or a
5927 * vulnerability scan.
5928 */
5929 if (n == 4)
5930 session_inc_http_err_ctr(s);
5931
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5932 if (objt_server(s->target))
5933 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5934
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5935 /* check if the response is HTTP/1.1 or above */
5936 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5937 ((rep->buf->p[5] > '1') ||
5938 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5939 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5940
5941 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5942 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]5943
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5944 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5945 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5946
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5947 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]5948
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5949 /* Adjust server's health based on status code. Note: status codes 501
5950 * and 505 are triggered on demand by client request, so we must not
5951 * count them as server failures.
5952 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5953 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5954 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5955 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5956 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5957 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5958 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5959
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5960 /*
5961 * 2: check for cacheability.
5962 */
5963
5964 switch (txn->status) {
Willy Tarreau628c40c2014-04-24 19:11:26 +0200[diff] [blame]5965 case 100:
5966 /*
5967 * We may be facing a 100-continue response, in which case this
5968 * is not the right response, and we're waiting for the next one.
5969 * Let's allow this response to go to the client and wait for the
5970 * next one.
5971 */
5972 hdr_idx_init(&txn->hdr_idx);
5973 msg->next -= channel_forward(rep, msg->next);
5974 msg->msg_state = HTTP_MSG_RPBEFORE;
5975 txn->status = 0;
5976 s->logs.t_data = -1; /* was not a response yet */
5977 goto next_one;
5978
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5979 case 200:
5980 case 203:
5981 case 206:
5982 case 300:
5983 case 301:
5984 case 410:
5985 /* RFC2616 @13.4:
5986 * "A response received with a status code of
5987 * 200, 203, 206, 300, 301 or 410 MAY be stored
5988 * by a cache (...) unless a cache-control
5989 * directive prohibits caching."
5990 *
5991 * RFC2616 @9.5: POST method :
5992 * "Responses to this method are not cacheable,
5993 * unless the response includes appropriate
5994 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5995 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5996 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5997 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5998 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5999 break;
6000 default:
6001 break;
6002 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6003
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6004 /*
6005 * 3: we may need to capture headers
6006 */
6007 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]6008 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6009 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]6010 txn->rsp.cap, s->fe->rsp_cap);
6011
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6012 /* 4: determine the transfer-length.
6013 * According to RFC2616 #4.4, amended by the HTTPbis working group,
6014 * the presence of a message-body in a RESPONSE and its transfer length
6015 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6016 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6017 * All responses to the HEAD request method MUST NOT include a
6018 * message-body, even though the presence of entity-header fields
6019 * might lead one to believe they do. All 1xx (informational), 204
6020 * (No Content), and 304 (Not Modified) responses MUST NOT include a
6021 * message-body. All other responses do include a message-body,
6022 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6023 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6024 * 1. Any response which "MUST NOT" include a message-body (such as the
6025 * 1xx, 204 and 304 responses and any response to a HEAD request) is
6026 * always terminated by the first empty line after the header fields,
6027 * regardless of the entity-header fields present in the message.
6028 *
6029 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
6030 * the "chunked" transfer-coding (Section 6.2) is used, the
6031 * transfer-length is defined by the use of this transfer-coding.
6032 * If a Transfer-Encoding header field is present and the "chunked"
6033 * transfer-coding is not present, the transfer-length is defined by
6034 * the sender closing the connection.
6035 *
6036 * 3. If a Content-Length header field is present, its decimal value in
6037 * OCTETs represents both the entity-length and the transfer-length.
6038 * If a message is received with both a Transfer-Encoding header
6039 * field and a Content-Length header field, the latter MUST be ignored.
6040 *
6041 * 4. If the message uses the media type "multipart/byteranges", and
6042 * the transfer-length is not otherwise specified, then this self-
6043 * delimiting media type defines the transfer-length. This media
6044 * type MUST NOT be used unless the sender knows that the recipient
6045 * can parse it; the presence in a request of a Range header with
6046 * multiple byte-range specifiers from a 1.1 client implies that the
6047 * client can parse multipart/byteranges responses.
6048 *
6049 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6050 */
6051
6052 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6053 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6054 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6055 * FIXME: should we parse anyway and return an error on chunked encoding ?
6056 */
6057 if (txn->meth == HTTP_METH_HEAD ||
6058 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6059 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6060 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]6061 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6062 goto skip_content_length;
6063 }
6064
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6065 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6066 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6067 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6068 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6069 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6070 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
6071 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6072 /* bad transfer-encoding (chunked followed by something else) */
6073 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6074 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]6075 break;
6076 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6077 }
6078
6079 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
6080 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6081 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6082 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6083 signed long long cl;
6084
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6085 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6086 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6087 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6088 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6089
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6090 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6091 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6092 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6093 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6094
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6095 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6096 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6097 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6098 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6099
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6100 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6101 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6102 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]6103 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6104
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6105 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6106 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6107 }
6108
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6109 if (s->fe->comp || s->be->comp)
6110 select_compression_response_header(s, rep->buf);
6111
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]6112skip_content_length:
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6113 /* Now we have to check if we need to modify the Connection header.
6114 * This is more difficult on the response than it is on the request,
6115 * because we can have two different HTTP versions and we don't know
6116 * how the client will interprete a response. For instance, let's say
6117 * that the client sends a keep-alive request in HTTP/1.0 and gets an
6118 * HTTP/1.1 response without any header. Maybe it will bound itself to
6119 * HTTP/1.0 because it only knows about it, and will consider the lack
6120 * of header as a close, or maybe it knows HTTP/1.1 and can consider
6121 * the lack of header as a keep-alive. Thus we will use two flags
6122 * indicating how a request MAY be understood by the client. In case
6123 * of multiple possibilities, we'll fix the header to be explicit. If
6124 * ambiguous cases such as both close and keepalive are seen, then we
6125 * will fall back to explicit close. Note that we won't take risks with
6126 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6127 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6128 */
6129
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6130 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
6131 txn->status == 101)) {
6132 /* Either we've established an explicit tunnel, or we're
6133 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6134 * to understand the next protocols. We have to switch to tunnel
6135 * mode, so that we transfer the request and responses then let
6136 * this protocol pass unmodified. When we later implement specific
6137 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6138 * header which contains information about that protocol for
6139 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]6140 */
6141 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
6142 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]6143 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
6144 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6145 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6146 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6147 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6148
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6149 /* this situation happens when combining pretend-keepalive with httpclose. */
6150 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6151 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6152 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
Willy Tarreau70dffda2014-01-30 03:07:23 +0100[diff] [blame]6153 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
6154
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6155 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6156 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6157 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
6158 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6159
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6160 /* now adjust header transformations depending on current state */
6161 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
6162 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
6163 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6164 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6165 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6166 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6167 else { /* SCL / KAL */
6168 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6169 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6170 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6171 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6172
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6173 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]6174 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6175
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6176 /* Some keep-alive responses are converted to Server-close if
6177 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6178 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6179 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
6180 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]6181 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6182 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6183 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]6184 }
6185
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6186 /* we want to have the response time before we start processing it */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6187 s->logs.t_data = tv_ms_elapsed(&s->logs.tv_accept, &now);
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]6188
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6189 /* end of job, return OK */
6190 rep->analysers &= ~an_bit;
6191 rep->analyse_exp = TICK_ETERNITY;
6192 channel_auto_close(rep);
6193 return 1;
6194
6195 abort_keep_alive:
6196 /* A keep-alive request to the server failed on a network error.
6197 * The client is required to retry. We need to close without returning
6198 * any other information so that the client retries.
6199 */
6200 txn->status = 0;
6201 rep->analysers = 0;
6202 s->req->analysers = 0;
6203 channel_auto_close(rep);
6204 s->logs.logwait = 0;
6205 s->logs.level = 0;
6206 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6207 channel_truncate(rep);
Willy Tarreauf118d9f2014-04-24 18:26:08 +0200[diff] [blame]6208 stream_int_retnclose(rep->cons, NULL);
6209 return 0;
6210}
6211
6212/* This function performs all the processing enabled for the current response.
6213 * It normally returns 1 unless it wants to break. It relies on buffers flags,
6214 * and updates s->rep->analysers. It might make sense to explode it into several
6215 * other functions. It works like process_request (see indications above).
6216 */
6217int http_process_res_common(struct session *s, struct channel *rep, int an_bit, struct proxy *px)
6218{
6219 struct http_txn *txn = &s->txn;
6220 struct http_msg *msg = &txn->rsp;
6221 struct proxy *cur_proxy;
6222 struct cond_wordlist *wl;
6223 struct http_res_rule *http_res_last_rule = NULL;
6224
6225 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
6226 now_ms, __FUNCTION__,
6227 s,
6228 rep,
6229 rep->rex, rep->wex,
6230 rep->flags,
6231 rep->buf->i,
6232 rep->analysers);
6233
6234 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
6235 return 0;
6236
6237 rep->analysers &= ~an_bit;
6238 rep->analyse_exp = TICK_ETERNITY;
6239
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6240 /* The stats applet needs to adjust the Connection header but we don't
6241 * apply any filter there.
6242 */
6243 if (unlikely(objt_applet(s->target) == &http_stats_applet))
6244 goto skip_filters;
6245
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6246 /*
6247 * We will have to evaluate the filters.
6248 * As opposed to version 1.2, now they will be evaluated in the
6249 * filters order and not in the header order. This means that
6250 * each filter has to be validated among all headers.
6251 *
6252 * Filters are tried with ->be first, then with ->fe if it is
6253 * different from ->be.
6254 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6255
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6256 cur_proxy = s->be;
6257 while (1) {
6258 struct proxy *rule_set = cur_proxy;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6259
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6260 /* evaluate http-response rules */
6261 if (!http_res_last_rule)
6262 http_res_last_rule = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, s, txn);
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]6263
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6264 /* try headers filters */
6265 if (rule_set->rsp_exp != NULL) {
6266 if (apply_filters_to_response(s, rep, rule_set) < 0) {
6267 return_bad_resp:
6268 if (objt_server(s->target)) {
6269 objt_server(s->target)->counters.failed_resp++;
6270 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_RSP);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]6271 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6272 s->be->be_counters.failed_resp++;
6273 return_srv_prx_502:
6274 rep->analysers = 0;
6275 txn->status = 502;
6276 s->logs.t_data = -1; /* was not a valid response */
6277 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau319f7452015-01-14 20:32:59 +0100[diff] [blame]6278 channel_truncate(rep);
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6279 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
6280 if (!(s->flags & SN_ERR_MASK))
6281 s->flags |= SN_ERR_PRXCOND;
6282 if (!(s->flags & SN_FINST_MASK))
6283 s->flags |= SN_FINST_H;
6284 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6285 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6286 }
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6287
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6288 /* has the response been denied ? */
6289 if (txn->flags & TX_SVDENY) {
6290 if (objt_server(s->target))
6291 objt_server(s->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6292
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6293 s->be->be_counters.denied_resp++;
6294 s->fe->fe_counters.denied_resp++;
6295 if (s->listener->counters)
6296 s->listener->counters->denied_resp++;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6297
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6298 goto return_srv_prx_502;
6299 }
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]6300
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6301 /* add response headers from the rule sets in the same order */
6302 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6303 if (txn->status < 200 && txn->status != 101)
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6304 break;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6305 if (wl->cond) {
6306 int ret = acl_exec_cond(wl->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
6307 ret = acl_pass(ret);
6308 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
6309 ret = !ret;
6310 if (!ret)
6311 continue;
6312 }
6313 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
6314 goto return_bad_resp;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6315 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6316
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6317 /* check whether we're already working on the frontend */
6318 if (cur_proxy == s->fe)
6319 break;
6320 cur_proxy = s->fe;
6321 }
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6322
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6323 /* OK that's all we can do for 1xx responses */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6324 if (unlikely(txn->status < 200 && txn->status != 101))
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6325 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]6326
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6327 /*
6328 * Now check for a server cookie.
6329 */
6330 if (s->be->cookie_name || s->be->appsession_name || s->fe->capture_name ||
6331 (s->be->options & PR_O_CHK_CACHE))
6332 manage_server_side_cookies(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6333
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6334 /*
6335 * Check for cache-control or pragma headers if required.
6336 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6337 if (((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)) && txn->status != 101)
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6338 check_response_for_cacheability(s, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6339
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6340 /*
6341 * Add server cookie in the response if needed
6342 */
6343 if (objt_server(s->target) && (s->be->ck_opts & PR_CK_INS) &&
6344 !((txn->flags & TX_SCK_FOUND) && (s->be->ck_opts & PR_CK_PSV)) &&
6345 (!(s->flags & SN_DIRECT) ||
6346 ((s->be->cookie_maxidle || txn->cookie_last_date) &&
6347 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
6348 (s->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
6349 (!s->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
6350 (!(s->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
6351 !(s->flags & SN_IGNORE_PRST)) {
6352 /* the server is known, it's not the one the client requested, or the
6353 * cookie's last seen date needs to be refreshed. We have to
6354 * insert a set-cookie here, except if we want to insert only on POST
6355 * requests and this one isn't. Note that servers which don't have cookies
6356 * (eg: some backup servers) will return a full cookie removal request.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6357 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6358 if (!objt_server(s->target)->cookie) {
6359 chunk_printf(&trash,
6360 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
6361 s->be->cookie_name);
6362 }
6363 else {
6364 chunk_printf(&trash, "Set-Cookie: %s=%s", s->be->cookie_name, objt_server(s->target)->cookie);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6365
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6366 if (s->be->cookie_maxidle || s->be->cookie_maxlife) {
6367 /* emit last_date, which is mandatory */
6368 trash.str[trash.len++] = COOKIE_DELIM_DATE;
6369 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
6370 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6371
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6372 if (s->be->cookie_maxlife) {
6373 /* emit first_date, which is either the original one or
6374 * the current date.
6375 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6376 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6377 s30tob64(txn->cookie_first_date ?
6378 txn->cookie_first_date >> 2 :
6379 (date.tv_sec+3) >> 2, trash.str + trash.len);
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6380 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6381 }
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6382 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6383 chunk_appendf(&trash, "; path=/");
6384 }
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]6385
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6386 if (s->be->cookie_domain)
6387 chunk_appendf(&trash, "; domain=%s", s->be->cookie_domain);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6388
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6389 if (s->be->ck_opts & PR_CK_HTTPONLY)
6390 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6391
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6392 if (s->be->ck_opts & PR_CK_SECURE)
6393 chunk_appendf(&trash, "; Secure");
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6394
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6395 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
6396 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6397
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6398 txn->flags &= ~TX_SCK_MASK;
6399 if (objt_server(s->target)->cookie && (s->flags & SN_DIRECT))
6400 /* the server did not change, only the date was updated */
6401 txn->flags |= TX_SCK_UPDATED;
6402 else
6403 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6404
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6405 /* Here, we will tell an eventual cache on the client side that we don't
6406 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
6407 * Some caches understand the correct form: 'no-cache="set-cookie"', but
6408 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6409 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6410 if ((s->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6411
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6412 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]6413
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6414 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
6415 "Cache-control: private", 22) < 0))
6416 goto return_bad_resp;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6417 }
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6418 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6419
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6420 /*
6421 * Check if result will be cacheable with a cookie.
6422 * We'll block the response if security checks have caught
6423 * nasty things such as a cacheable cookie.
6424 */
6425 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
6426 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
6427 (s->be->options & PR_O_CHK_CACHE)) {
6428 /* we're in presence of a cacheable response containing
6429 * a set-cookie header. We'll block it as requested by
6430 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6431 */
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6432 if (objt_server(s->target))
6433 objt_server(s->target)->counters.failed_secu++;
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]6434
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6435 s->be->be_counters.denied_resp++;
6436 s->fe->fe_counters.denied_resp++;
6437 if (s->listener->counters)
6438 s->listener->counters->denied_resp++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6439
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6440 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
6441 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6442 send_log(s->be, LOG_ALERT,
6443 "Blocking cacheable cookie in response from instance %s, server %s.\n",
6444 s->be->id, objt_server(s->target) ? objt_server(s->target)->id : "<dispatch>");
6445 goto return_srv_prx_502;
6446 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]6447
Willy Tarreau70730dd2014-04-24 18:06:27 +0200[diff] [blame]6448 skip_filters:
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6449 /*
6450 * Adjust "Connection: close" or "Connection: keep-alive" if needed.
6451 * If an "Upgrade" token is found, the header is left untouched in order
6452 * not to have to deal with some client bugs : some of them fail an upgrade
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6453 * if anything but "Upgrade" is present in the Connection header. We don't
6454 * want to touch any 101 response either since it's switching to another
6455 * protocol.
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6456 */
Willy Tarreauce730de2014-09-16 10:40:38 +0200[diff] [blame]6457 if ((txn->status != 101) && !(txn->flags & TX_HDR_CONN_UPG) &&
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6458 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
6459 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
6460 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
6461 unsigned int want_flags = 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]6462
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6463 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6464 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
6465 /* we want a keep-alive response here. Keep-alive header
6466 * required if either side is not 1.1.
6467 */
6468 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
6469 want_flags |= TX_CON_KAL_SET;
6470 }
6471 else {
6472 /* we want a close response here. Close header required if
6473 * the server is 1.1, regardless of the client.
6474 */
6475 if (msg->flags & HTTP_MSGF_VER_11)
6476 want_flags |= TX_CON_CLO_SET;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6477 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6478
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6479 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
6480 http_change_connection_header(txn, msg, want_flags);
6481 }
6482
6483 skip_header_mangling:
6484 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
6485 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
6486 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6487
Willy Tarreau58975672014-04-24 21:13:57 +0200[diff] [blame]6488 /* if the user wants to log as soon as possible, without counting
6489 * bytes from the server, then this is the right moment. We have
6490 * to temporarily assign bytes_out to log what we currently have.
6491 */
6492 if (!LIST_ISEMPTY(&s->fe->logformat) && !(s->logs.logwait & LW_BYTES)) {
6493 s->logs.t_close = s->logs.t_data; /* to get a valid end date */
6494 s->logs.bytes_out = txn->rsp.eoh;
6495 s->do_log(s);
6496 s->logs.bytes_out = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6497 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]6498 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]6499}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6500
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6501/* This function is an analyser which forwards response body (including chunk
6502 * sizes if any). It is called as soon as we must forward, even if we forward
6503 * zero byte. The only situation where it must not be called is when we're in
6504 * tunnel mode and we want to forward till the close. It's used both to forward
6505 * remaining data and to resync after end of body. It expects the msg_state to
6506 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
6507 * read more data, or 1 once we can go on with next request or end the session.
Willy Tarreaud3510212014-04-21 11:24:13 +0200[diff] [blame]6508 *
6509 * It is capable of compressing response data both in content-length mode and
6510 * in chunked mode. The state machines follows different flows depending on
6511 * whether content-length and chunked modes are used, since there are no
6512 * trailers in content-length :
6513 *
6514 * chk-mode cl-mode
6515 * ,----- BODY -----.
6516 * / \
6517 * V size > 0 V chk-mode
6518 * .--> SIZE -------------> DATA -------------> CRLF
6519 * | | size == 0 | last byte |
6520 * | v final crlf v inspected |
6521 * | TRAILERS -----------> DONE |
6522 * | |
6523 * `----------------------------------------------'
6524 *
6525 * Compression only happens in the DATA state, and must be flushed in final
6526 * states (TRAILERS/DONE) or when leaving on missing data. Normal forwarding
6527 * is performed at once on final states for all bytes parsed, or when leaving
6528 * on missing data.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6529 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6530int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6531{
6532 struct http_txn *txn = &s->txn;
6533 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauf2f7d6b2014-11-24 11:55:08 +0100[diff] [blame]6534 static struct buffer *tmpbuf = &buf_empty;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6535 int compressing = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6536 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6537
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6538 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
6539 return 0;
6540
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6541 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]6542 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]6543 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6544 /* Output closed while we were sending data. We must abort and
6545 * wake the other side up.
6546 */
6547 msg->msg_state = HTTP_MSG_ERROR;
6548 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]6549 return 1;
6550 }
6551
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6552 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6553 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]6554
Willy Tarreaubb2e6692014-07-10 19:06:10 +0200[diff] [blame]6555 if (msg->sov > 0) {
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6556 /* we have msg->sov which points to the first byte of message
6557 * body, and res->buf.p still points to the beginning of the
6558 * message. We forward the headers now, as we don't need them
6559 * anymore, and we want to flush them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6560 */
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6561 b_adv(res->buf, msg->sov);
6562 msg->next -= msg->sov;
6563 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6564
Willy Tarreaub59c7bf2014-04-22 14:29:58 +0200[diff] [blame]6565 /* The previous analysers guarantee that the state is somewhere
6566 * between MSG_BODY and the first MSG_DATA. So msg->sol and
6567 * msg->next are always correct.
6568 */
6569 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
6570 if (msg->flags & HTTP_MSGF_TE_CHNK)
6571 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
6572 else
6573 msg->msg_state = HTTP_MSG_DATA;
6574 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6575 }
6576
Willy Tarreauefdf0942014-04-24 20:08:57 +0200[diff] [blame]6577 if (res->to_forward) {
6578 /* We can't process the buffer's contents yet */
6579 res->flags |= CF_WAKE_WRITE;
6580 goto missing_data;
6581 }
6582
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6583 if (unlikely(s->comp_algo != NULL) && msg->msg_state < HTTP_MSG_TRAILERS) {
6584 /* We need a compression buffer in the DATA state to put the
6585 * output of compressed data, and in CRLF state to let the
6586 * TRAILERS state finish the job of removing the trailing CRLF.
6587 */
Willy Tarreauf2f7d6b2014-11-24 11:55:08 +0100[diff] [blame]6588 if (unlikely(!tmpbuf->size)) {
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6589 /* this is the first time we need the compression buffer */
Willy Tarreaue583ea52014-11-24 11:30:16 +0100[diff] [blame]6590 if (b_alloc(&tmpbuf) == NULL)
Willy Tarreau32b5ab22014-04-21 11:27:29 +0200[diff] [blame]6591 goto aborted_xfer; /* no memory */
6592 }
6593
6594 ret = http_compression_buffer_init(s, res->buf, tmpbuf);
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6595 if (ret < 0) {
6596 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6597 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6598 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6599 compressing = 1;
6600 }
6601
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6602 while (1) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6603 switch (msg->msg_state - HTTP_MSG_DATA) {
6604 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6605 /* we may have some pending data starting at res->buf->p */
6606 if (unlikely(s->comp_algo)) {
Willy Tarreau7f2f8d52014-04-18 00:20:14 +0200[diff] [blame]6607 ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6608 if (ret < 0)
6609 goto aborted_xfer;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6610
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6611 if (msg->chunk_len) {
6612 /* input empty or output full */
6613 if (res->buf->i > msg->next)
6614 res->flags |= CF_WAKE_WRITE;
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6615 goto missing_data;
6616 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6617 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6618 else {
Willy Tarreaud5a67832014-04-21 10:54:27 +0200[diff] [blame]6619 if (msg->chunk_len > res->buf->i - msg->next) {
6620 /* output full */
6621 res->flags |= CF_WAKE_WRITE;
6622 goto missing_data;
6623 }
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6624 msg->next += msg->chunk_len;
6625 msg->chunk_len = 0;
6626 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6627
6628 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6629 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6630 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6631 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6632 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6633 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6634 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6635 /* fall through for HTTP_MSG_CHUNK_CRLF */
6636
6637 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6638 /* we want the CRLF after the data */
6639
6640 ret = http_skip_chunk_crlf(msg);
6641 if (ret == 0)
6642 goto missing_data;
6643 else if (ret < 0) {
6644 if (msg->err_pos >= 0)
6645 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
6646 goto return_bad_res;
6647 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6648 /* we're in MSG_CHUNK_SIZE now, fall through */
6649
6650 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6651 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreauc24715e2014-04-17 15:21:20 +0200[diff] [blame]6652 * set ->next to point to the body and switch to DATA or
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6653 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6654 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6655
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6656 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6657 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6658 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6659 else if (ret < 0) {
6660 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6661 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]6662 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6663 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6664 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6665 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6666
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6667 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6668 if (unlikely(compressing)) {
6669 /* we need to flush output contents before syncing FSMs */
6670 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6671 compressing = 0;
6672 }
6673
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6674 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6675 if (ret == 0)
6676 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6677 else if (ret < 0) {
6678 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6679 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_TRAILERS, s->fe);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6680 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6681 }
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6682 /* we're in HTTP_MSG_DONE now, fall through */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6683
6684 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6685 /* other states, DONE...TUNNEL */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6686 if (unlikely(compressing)) {
6687 /* we need to flush output contents before syncing FSMs */
6688 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6689 compressing = 0;
6690 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6691
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6692 /* we may have some pending data starting at res->buf->p
6693 * such as a last chunk of data or trailers.
6694 */
6695 b_adv(res->buf, msg->next);
6696 msg->next = 0;
6697
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6698 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6699 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6700 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6701 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6702 channel_dont_close(res);
Willy Tarreau3ce10ff2014-04-22 08:24:38 +0200[diff] [blame]6703
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6704 if (http_resync_states(s)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6705 /* some state changes occurred, maybe the analyser
6706 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6707 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6708 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6709 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6710 /* response errors are most likely due to
6711 * the client aborting the transfer.
6712 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6713 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6714 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6715 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6716 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6717 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6718 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6719 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6720 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6721 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6722 }
6723 }
6724
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6725 missing_data:
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6726 /* we may have some pending data starting at res->buf->p */
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6727 if (unlikely(compressing)) {
6728 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6729 compressing = 0;
6730 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6731
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6732 if ((s->comp_algo == NULL || msg->msg_state >= HTTP_MSG_TRAILERS)) {
6733 b_adv(res->buf, msg->next);
6734 msg->next = 0;
6735 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6736 }
6737
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6738 if (res->flags & CF_SHUTW)
6739 goto aborted_xfer;
6740
6741 /* stop waiting for data if the input is closed before the end. If the
6742 * client side was already closed, it means that the client has aborted,
6743 * so we don't want to count this as a server abort. Otherwise it's a
6744 * server abort.
6745 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6746 if (res->flags & CF_SHUTR) {
Willy Tarreaub2c6a782014-04-23 20:29:01 +0200[diff] [blame]6747 if ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6748 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6749 if (!(s->flags & SN_ERR_MASK))
6750 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6751 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6752 if (objt_server(s->target))
6753 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6754 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6755 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6756
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6757 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6758 if (!s->req->analysers)
6759 goto return_bad_res;
6760
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6761 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6762 * 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]6763 * Similarly, with keep-alive on the client side, we don't want to forward a
6764 * close.
6765 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6766 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6767 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6768 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6769 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6770
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6771 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6772 * 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]6773 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6774 * modes are already handled by the stream sock layer. We must not do
6775 * this in content-length mode because it could present the MSG_MORE
6776 * flag with the last block of forwarded data, which would cause an
6777 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6778 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6779 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6780 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6781
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6782 /* the session handler will take care of timeouts and errors */
6783 return 0;
6784
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6785 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6786 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6787 if (objt_server(s->target))
6788 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6789
6790 return_bad_res_stats_ok:
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]6791 if (unlikely(compressing)) {
Willy Tarreau168ebc52014-04-18 00:53:43 +0200[diff] [blame]6792 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
Willy Tarreaud01f4262014-04-21 11:00:13 +0200[diff] [blame]6793 compressing = 0;
6794 }
6795
Willy Tarreauc623c172014-04-18 09:53:50 +0200[diff] [blame]6796 /* we may have some pending data starting at res->buf->p */
6797 if (s->comp_algo == NULL) {
6798 b_adv(res->buf, msg->next);
6799 msg->next = 0;
6800 }
6801
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6802 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6803 /* don't send any error message as we're in the body */
6804 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6805 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6806 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]6807 if (objt_server(s->target))
6808 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6809
6810 if (!(s->flags & SN_ERR_MASK))
6811 s->flags |= SN_ERR_PRXCOND;
6812 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6813 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6814 return 0;
6815
6816 aborted_xfer:
Willy Tarreau6fef8ae2014-04-22 21:22:06 +0200[diff] [blame]6817 if (unlikely(compressing)) {
6818 http_compression_buffer_end(s, &res->buf, &tmpbuf, msg->msg_state >= HTTP_MSG_TRAILERS);
6819 compressing = 0;
6820 }
6821
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6822 txn->rsp.msg_state = HTTP_MSG_ERROR;
6823 /* don't send any error message as we're in the body */
6824 stream_int_retnclose(res->cons, NULL);
6825 res->analysers = 0;
6826 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6827
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6828 s->fe->fe_counters.cli_aborts++;
6829 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6830 if (objt_server(s->target))
6831 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6832
6833 if (!(s->flags & SN_ERR_MASK))
6834 s->flags |= SN_ERR_CLICL;
6835 if (!(s->flags & SN_FINST_MASK))
6836 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6837 return 0;
6838}
6839
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6840/* Iterate the same filter through all request headers.
6841 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6842 * Since it can manage the switch to another backend, it updates the per-proxy
6843 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6844 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6845int apply_filter_to_req_headers(struct session *s, struct channel *req, struct hdr_exp *exp)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6846{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6847 char *cur_ptr, *cur_end, *cur_next;
6848 int cur_idx, old_idx, last_hdr;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6849 struct http_txn *txn = &s->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6850 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6851 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6852
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6853 last_hdr = 0;
6854
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6855 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6856 old_idx = 0;
6857
6858 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6859 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6860 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6861 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6862 (exp->action == ACT_ALLOW ||
6863 exp->action == ACT_DENY ||
6864 exp->action == ACT_TARPIT))
6865 return 0;
6866
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6867 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6868 if (!cur_idx)
6869 break;
6870
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6871 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6872 cur_ptr = cur_next;
6873 cur_end = cur_ptr + cur_hdr->len;
6874 cur_next = cur_end + cur_hdr->cr + 1;
6875
6876 /* Now we have one header between cur_ptr and cur_end,
6877 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6878 */
6879
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]6880 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6881 switch (exp->action) {
6882 case ACT_SETBE:
6883 /* It is not possible to jump a second time.
6884 * FIXME: should we return an HTTP/500 here so that
6885 * the admin knows there's a problem ?
6886 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6887 if (s->be != s->fe)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6888 break;
6889
6890 /* Swithing Proxy */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6891 session_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6892 last_hdr = 1;
6893 break;
6894
6895 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6896 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6897 last_hdr = 1;
6898 break;
6899
6900 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6901 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6902 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6903 break;
6904
6905 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6906 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6907 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6908 break;
6909
6910 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]6911 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
6912 if (trash.len < 0)
6913 return -1;
6914
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6915 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6916 /* FIXME: if the user adds a newline in the replacement, the
6917 * index will not be recalculated for now, and the new line
6918 * will not be counted as a new header.
6919 */
6920
6921 cur_end += delta;
6922 cur_next += delta;
6923 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6924 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6925 break;
6926
6927 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6928 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6929 cur_next += delta;
6930
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6931 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6932 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6933 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6934 cur_hdr->len = 0;
6935 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6936 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6937 break;
6938
6939 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6940 }
6941
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6942 /* keep the link from this header to next one in case of later
6943 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6944 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6945 old_idx = cur_idx;
6946 }
6947 return 0;
6948}
6949
6950
6951/* Apply the filter to the request line.
6952 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6953 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6954 * Since it can manage the switch to another backend, it updates the per-proxy
6955 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6956 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6957int apply_filter_to_req_line(struct session *s, struct channel *req, struct hdr_exp *exp)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6958{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6959 char *cur_ptr, *cur_end;
6960 int done;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6961 struct http_txn *txn = &s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6962 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6963
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6964 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6965 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6966 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6967 (exp->action == ACT_ALLOW ||
6968 exp->action == ACT_DENY ||
6969 exp->action == ACT_TARPIT))
6970 return 0;
6971 else if (exp->action == ACT_REMOVE)
6972 return 0;
6973
6974 done = 0;
6975
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6976 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6977 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6978
6979 /* Now we have the request line between cur_ptr and cur_end */
6980
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]6981 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6982 switch (exp->action) {
6983 case ACT_SETBE:
6984 /* It is not possible to jump a second time.
6985 * FIXME: should we return an HTTP/500 here so that
6986 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6987 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6988 if (s->be != s->fe)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6989 break;
6990
6991 /* Swithing Proxy */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]6992 session_set_backend(s, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6993 done = 1;
6994 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6995
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6996 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6997 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6998 done = 1;
6999 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7000
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7001 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7002 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7003 done = 1;
7004 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7005
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7006 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7007 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7008 done = 1;
7009 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7010
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7011 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7012 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7013 if (trash.len < 0)
7014 return -1;
7015
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7016 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7017 /* FIXME: if the user adds a newline in the replacement, the
7018 * index will not be recalculated for now, and the new line
7019 * will not be counted as a new header.
7020 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7021
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7022 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7023 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7024 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7025 HTTP_MSG_RQMETH,
7026 cur_ptr, cur_end + 1,
7027 NULL, NULL);
7028 if (unlikely(!cur_end))
7029 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]7030
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7031 /* we have a full request and we know that we have either a CR
7032 * or an LF at <ptr>.
7033 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7034 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
7035 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]7036 /* there is no point trying this regex on headers */
7037 return 1;
7038 }
7039 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7040 return done;
7041}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]7042
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7043
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7044
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7045/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7046 * 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]7047 * 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]7048 * unparsable request. Since it can manage the switch to another backend, it
7049 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7050 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7051int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7052{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7053 struct http_txn *txn = &s->txn;
7054 struct hdr_exp *exp;
7055
7056 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7057 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7058
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7059 /*
7060 * The interleaving of transformations and verdicts
7061 * makes it difficult to decide to continue or stop
7062 * the evaluation.
7063 */
7064
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7065 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
7066 break;
7067
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7068 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7069 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7070 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7071 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7072
7073 /* if this filter had a condition, evaluate it now and skip to
7074 * next filter if the condition does not match.
7075 */
7076 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7077 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]7078 ret = acl_pass(ret);
7079 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7080 ret = !ret;
7081
7082 if (!ret)
7083 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7084 }
7085
7086 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]7087 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7088 if (unlikely(ret < 0))
7089 return -1;
7090
7091 if (likely(ret == 0)) {
7092 /* The filter did not match the request, it can be
7093 * iterated through all headers.
7094 */
Willy Tarreau34d4c3c2015-01-30 20:58:58 +0100[diff] [blame]7095 if (unlikely(apply_filter_to_req_headers(s, req, exp) < 0))
7096 return -1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7097 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7098 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7099 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7100}
7101
7102
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7103
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7104/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7105 * Try to retrieve the server associated to the appsession.
7106 * If the server is found, it's assigned to the session.
7107 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7108void manage_client_side_appsession(struct session *s, const char *buf, int len) {
7109 struct http_txn *txn = &s->txn;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7110 appsess *asession = NULL;
7111 char *sessid_temp = NULL;
7112
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7113 if (len > s->be->appsession_len) {
7114 len = s->be->appsession_len;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7115 }
7116
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7117 if (s->be->options2 & PR_O2_AS_REQL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7118 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7119 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7120 /* 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]7121 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7122 }
7123
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7124 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7125 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7126 send_log(s->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7127 return;
7128 }
7129
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7130 memcpy(txn->sessid, buf, len);
7131 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7132 }
7133
7134 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
7135 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7136 send_log(s->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7137 return;
7138 }
7139
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7140 memcpy(sessid_temp, buf, len);
7141 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7142
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7143 asession = appsession_hash_lookup(&(s->be->htbl_proxy), sessid_temp);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7144 /* free previously allocated memory */
7145 pool_free2(apools.sessid, sessid_temp);
7146
7147 if (asession != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7148 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
7149 if (!(s->be->options2 & PR_O2_AS_REQL))
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7150 asession->request_count++;
7151
7152 if (asession->serverid != NULL) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7153 struct server *srv = s->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7154
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7155 while (srv) {
7156 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7157 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7158 (s->be->options & PR_O_PERSIST) ||
7159 (s->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7160 /* we found the server and it's usable */
7161 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7162 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7163 s->flags |= SN_DIRECT | SN_ASSIGNED;
7164 s->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]7165
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7166 break;
7167 } else {
7168 txn->flags &= ~TX_CK_MASK;
7169 txn->flags |= TX_CK_DOWN;
7170 }
7171 }
7172 srv = srv->next;
7173 }
7174 }
7175 }
7176}
7177
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7178/* Find the end of a cookie value contained between <s> and <e>. It works the
7179 * same way as with headers above except that the semi-colon also ends a token.
7180 * See RFC2965 for more information. Note that it requires a valid header to
7181 * return a valid result.
7182 */
7183char *find_cookie_value_end(char *s, const char *e)
7184{
7185 int quoted, qdpair;
7186
7187 quoted = qdpair = 0;
7188 for (; s < e; s++) {
7189 if (qdpair) qdpair = 0;
7190 else if (quoted) {
7191 if (*s == '\\') qdpair = 1;
7192 else if (*s == '"') quoted = 0;
7193 }
7194 else if (*s == '"') quoted = 1;
7195 else if (*s == ',' || *s == ';') return s;
7196 }
7197 return s;
7198}
7199
7200/* Delete a value in a header between delimiters <from> and <next> in buffer
7201 * <buf>. The number of characters displaced is returned, and the pointer to
7202 * the first delimiter is updated if required. The function tries as much as
7203 * possible to respect the following principles :
7204 * - replace <from> delimiter by the <next> one unless <from> points to a
7205 * colon, in which case <next> is simply removed
7206 * - set exactly one space character after the new first delimiter, unless
7207 * there are not enough characters in the block being moved to do so.
7208 * - remove unneeded spaces before the previous delimiter and after the new
7209 * one.
7210 *
7211 * It is the caller's responsibility to ensure that :
7212 * - <from> points to a valid delimiter or the colon ;
7213 * - <next> points to a valid delimiter or the final CR/LF ;
7214 * - there are non-space chars before <from> ;
7215 * - there is a CR/LF at or after <next>.
7216 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]7217int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7218{
7219 char *prev = *from;
7220
7221 if (*prev == ':') {
7222 /* We're removing the first value, preserve the colon and add a
7223 * space if possible.
7224 */
7225 if (!http_is_crlf[(unsigned char)*next])
7226 next++;
7227 prev++;
7228 if (prev < next)
7229 *prev++ = ' ';
7230
7231 while (http_is_spht[(unsigned char)*next])
7232 next++;
7233 } else {
7234 /* Remove useless spaces before the old delimiter. */
7235 while (http_is_spht[(unsigned char)*(prev-1)])
7236 prev--;
7237 *from = prev;
7238
7239 /* copy the delimiter and if possible a space if we're
7240 * not at the end of the line.
7241 */
7242 if (!http_is_crlf[(unsigned char)*next]) {
7243 *prev++ = *next++;
7244 if (prev + 1 < next)
7245 *prev++ = ' ';
7246 while (http_is_spht[(unsigned char)*next])
7247 next++;
7248 }
7249 }
7250 return buffer_replace2(buf, prev, next, NULL, 0);
7251}
7252
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7253/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7254 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7255 * desirable to call it only when needed. This code is quite complex because
7256 * of the multiple very crappy and ambiguous syntaxes we have to support. it
7257 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7258 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7259void manage_client_side_cookies(struct session *s, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7260{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7261 struct http_txn *txn = &s->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7262 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7263 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7264 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
7265 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7266
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7267 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]7268 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7269 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7270
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7271 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7272 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7273 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7274
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7275 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7276 hdr_beg = hdr_next;
7277 hdr_end = hdr_beg + cur_hdr->len;
7278 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7279
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7280 /* We have one full header between hdr_beg and hdr_end, and the
7281 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7282 * "Cookie:" headers.
7283 */
7284
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7285 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7286 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7287 old_idx = cur_idx;
7288 continue;
7289 }
7290
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7291 del_from = NULL; /* nothing to be deleted */
7292 preserve_hdr = 0; /* assume we may kill the whole header */
7293
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7294 /* Now look for cookies. Conforming to RFC2109, we have to support
7295 * attributes whose name begin with a '$', and associate them with
7296 * the right cookie, if we want to delete this cookie.
7297 * So there are 3 cases for each cookie read :
7298 * 1) it's a special attribute, beginning with a '$' : ignore it.
7299 * 2) it's a server id cookie that we *MAY* want to delete : save
7300 * some pointers on it (last semi-colon, beginning of cookie...)
7301 * 3) it's an application cookie : we *MAY* have to delete a previous
7302 * "special" cookie.
7303 * At the end of loop, if a "special" cookie remains, we may have to
7304 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7305 * *MUST* delete it.
7306 *
7307 * Note: RFC2965 is unclear about the processing of spaces around
7308 * the equal sign in the ATTR=VALUE form. A careful inspection of
7309 * the RFC explicitly allows spaces before it, and not within the
7310 * tokens (attrs or values). An inspection of RFC2109 allows that
7311 * too but section 10.1.3 lets one think that spaces may be allowed
7312 * after the equal sign too, resulting in some (rare) buggy
7313 * implementations trying to do that. So let's do what servers do.
7314 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
7315 * allowed quoted strings in values, with any possible character
7316 * after a backslash, including control chars and delimitors, which
7317 * causes parsing to become ambiguous. Browsers also allow spaces
7318 * within values even without quotes.
7319 *
7320 * We have to keep multiple pointers in order to support cookie
7321 * removal at the beginning, middle or end of header without
7322 * corrupting the header. All of these headers are valid :
7323 *
7324 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
7325 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
7326 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
7327 * | | | | | | | | |
7328 * | | | | | | | | hdr_end <--+
7329 * | | | | | | | +--> next
7330 * | | | | | | +----> val_end
7331 * | | | | | +-----------> val_beg
7332 * | | | | +--------------> equal
7333 * | | | +----------------> att_end
7334 * | | +---------------------> att_beg
7335 * | +--------------------------> prev
7336 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7337 */
7338
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7339 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
7340 /* Iterate through all cookies on this line */
7341
7342 /* find att_beg */
7343 att_beg = prev + 1;
7344 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7345 att_beg++;
7346
7347 /* find att_end : this is the first character after the last non
7348 * space before the equal. It may be equal to hdr_end.
7349 */
7350 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7351
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7352 while (equal < hdr_end) {
7353 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7354 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7355 if (http_is_spht[(unsigned char)*equal++])
7356 continue;
7357 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7358 }
7359
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7360 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7361 * is between <att_beg> and <equal>, both may be identical.
7362 */
7363
7364 /* look for end of cookie if there is an equal sign */
7365 if (equal < hdr_end && *equal == '=') {
7366 /* look for the beginning of the value */
7367 val_beg = equal + 1;
7368 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7369 val_beg++;
7370
7371 /* find the end of the value, respecting quotes */
7372 next = find_cookie_value_end(val_beg, hdr_end);
7373
7374 /* make val_end point to the first white space or delimitor after the value */
7375 val_end = next;
7376 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7377 val_end--;
7378 } else {
7379 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7380 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7381
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7382 /* We have nothing to do with attributes beginning with '$'. However,
7383 * they will automatically be removed if a header before them is removed,
7384 * since they're supposed to be linked together.
7385 */
7386 if (*att_beg == '$')
7387 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7388
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7389 /* Ignore cookies with no equal sign */
7390 if (equal == next) {
7391 /* This is not our cookie, so we must preserve it. But if we already
7392 * scheduled another cookie for removal, we cannot remove the
7393 * complete header, but we can remove the previous block itself.
7394 */
7395 preserve_hdr = 1;
7396 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7397 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7398 val_end += delta;
7399 next += delta;
7400 hdr_end += delta;
7401 hdr_next += delta;
7402 cur_hdr->len += delta;
7403 http_msg_move_end(&txn->req, delta);
7404 prev = del_from;
7405 del_from = NULL;
7406 }
7407 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]7408 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7409
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7410 /* if there are spaces around the equal sign, we need to
7411 * strip them otherwise we'll get trouble for cookie captures,
7412 * or even for rewrites. Since this happens extremely rarely,
7413 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7414 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7415 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7416 int stripped_before = 0;
7417 int stripped_after = 0;
7418
7419 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7420 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7421 equal += stripped_before;
7422 val_beg += stripped_before;
7423 }
7424
7425 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7426 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7427 val_beg += stripped_after;
7428 stripped_before += stripped_after;
7429 }
7430
7431 val_end += stripped_before;
7432 next += stripped_before;
7433 hdr_end += stripped_before;
7434 hdr_next += stripped_before;
7435 cur_hdr->len += stripped_before;
7436 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7437 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7438 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7439
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7440 /* First, let's see if we want to capture this cookie. We check
7441 * that we don't already have a client side cookie, because we
7442 * can only capture one. Also as an optimisation, we ignore
7443 * cookies shorter than the declared name.
7444 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7445 if (s->fe->capture_name != NULL && txn->cli_cookie == NULL &&
7446 (val_end - att_beg >= s->fe->capture_namelen) &&
7447 memcmp(att_beg, s->fe->capture_name, s->fe->capture_namelen) == 0) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7448 int log_len = val_end - att_beg;
7449
7450 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
7451 Alert("HTTP logging : out of memory.\n");
7452 } else {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7453 if (log_len > s->fe->capture_len)
7454 log_len = s->fe->capture_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7455 memcpy(txn->cli_cookie, att_beg, log_len);
7456 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7457 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7458 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7459
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7460 /* Persistence cookies in passive, rewrite or insert mode have the
7461 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7462 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7463 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7464 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7465 * For cookies in prefix mode, the form is :
7466 *
7467 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7468 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7469 if ((att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
7470 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
7471 struct server *srv = s->be->srv;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7472 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7473
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7474 /* if we're in cookie prefix mode, we'll search the delimitor so that we
7475 * have the server ID between val_beg and delim, and the original cookie between
7476 * delim+1 and val_end. Otherwise, delim==val_end :
7477 *
7478 * Cookie: NAME=SRV; # in all but prefix modes
7479 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
7480 * | || || | |+-> next
7481 * | || || | +--> val_end
7482 * | || || +---------> delim
7483 * | || |+------------> val_beg
7484 * | || +-------------> att_end = equal
7485 * | |+-----------------> att_beg
7486 * | +------------------> prev
7487 * +-------------------------> hdr_beg
7488 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7489
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7490 if (s->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7491 for (delim = val_beg; delim < val_end; delim++)
7492 if (*delim == COOKIE_DELIM)
7493 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7494 } else {
7495 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7496 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7497 /* Now check if the cookie contains a date field, which would
7498 * appear after a vertical bar ('|') just after the server name
7499 * and before the delimiter.
7500 */
7501 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
7502 if (vbar1) {
7503 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7504 * right is the last seen date. It is a base64 encoded
7505 * 30-bit value representing the UNIX date since the
7506 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7507 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7508 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7509 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7510 if (val_end - vbar1 >= 5) {
7511 val = b64tos30(vbar1);
7512 if (val > 0)
7513 txn->cookie_last_date = val << 2;
7514 }
7515 /* look for a second vertical bar */
7516 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
7517 if (vbar1 && (val_end - vbar1 > 5)) {
7518 val = b64tos30(vbar1 + 1);
7519 if (val > 0)
7520 txn->cookie_first_date = val << 2;
7521 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]7522 }
7523 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7524
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7525 /* if the cookie has an expiration date and the proxy wants to check
7526 * it, then we do that now. We first check if the cookie is too old,
7527 * then only if it has expired. We detect strict overflow because the
7528 * time resolution here is not great (4 seconds). Cookies with dates
7529 * in the future are ignored if their offset is beyond one day. This
7530 * allows an admin to fix timezone issues without expiring everyone
7531 * and at the same time avoids keeping unwanted side effects for too
7532 * long.
7533 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7534 if (txn->cookie_first_date && s->be->cookie_maxlife &&
7535 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)s->be->cookie_maxlife) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7536 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7537 txn->flags &= ~TX_CK_MASK;
7538 txn->flags |= TX_CK_OLD;
7539 delim = val_beg; // let's pretend we have not found the cookie
7540 txn->cookie_first_date = 0;
7541 txn->cookie_last_date = 0;
7542 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7543 else if (txn->cookie_last_date && s->be->cookie_maxidle &&
7544 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)s->be->cookie_maxidle) ||
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]7545 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7546 txn->flags &= ~TX_CK_MASK;
7547 txn->flags |= TX_CK_EXPIRED;
7548 delim = val_beg; // let's pretend we have not found the cookie
7549 txn->cookie_first_date = 0;
7550 txn->cookie_last_date = 0;
7551 }
7552
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7553 /* Here, we'll look for the first running server which supports the cookie.
7554 * This allows to share a same cookie between several servers, for example
7555 * to dedicate backup servers to specific servers only.
7556 * However, to prevent clients from sticking to cookie-less backup server
7557 * when they have incidentely learned an empty cookie, we simply ignore
7558 * empty cookies and mark them as invalid.
7559 * The same behaviour is applied when persistence must be ignored.
7560 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7561 if ((delim == val_beg) || (s->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7562 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7563
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7564 while (srv) {
7565 if (srv->cookie && (srv->cklen == delim - val_beg) &&
7566 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7567 if ((srv->state != SRV_ST_STOPPED) ||
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7568 (s->be->options & PR_O_PERSIST) ||
7569 (s->flags & SN_FORCE_PRST)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7570 /* we found the server and we can use it */
7571 txn->flags &= ~TX_CK_MASK;
Willy Tarreau892337c2014-05-13 23:41:20 +0200[diff] [blame]7572 txn->flags |= (srv->state != SRV_ST_STOPPED) ? TX_CK_VALID : TX_CK_DOWN;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7573 s->flags |= SN_DIRECT | SN_ASSIGNED;
7574 s->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7575 break;
7576 } else {
7577 /* we found a server, but it's down,
7578 * mark it as such and go on in case
7579 * another one is available.
7580 */
7581 txn->flags &= ~TX_CK_MASK;
7582 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7583 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7584 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7585 srv = srv->next;
7586 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7587
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7588 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7589 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7590 txn->flags &= ~TX_CK_MASK;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7591 if ((s->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7592 txn->flags |= TX_CK_UNUSED;
7593 else
7594 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7595 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7596
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7597 /* depending on the cookie mode, we may have to either :
7598 * - delete the complete cookie if we're in insert+indirect mode, so that
7599 * the server never sees it ;
7600 * - remove the server id from the cookie value, and tag the cookie as an
7601 * application cookie so that it does not get accidentely removed later,
7602 * if we're in cookie prefix mode
7603 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7604 if ((s->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7605 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7606
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7607 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7608 val_end += delta;
7609 next += delta;
7610 hdr_end += delta;
7611 hdr_next += delta;
7612 cur_hdr->len += delta;
7613 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7614
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7615 del_from = NULL;
7616 preserve_hdr = 1; /* we want to keep this cookie */
7617 }
7618 else if (del_from == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7619 (s->be->ck_opts & (PR_CK_INS | PR_CK_IND)) == (PR_CK_INS | PR_CK_IND)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7620 del_from = prev;
7621 }
7622 } else {
7623 /* This is not our cookie, so we must preserve it. But if we already
7624 * scheduled another cookie for removal, we cannot remove the
7625 * complete header, but we can remove the previous block itself.
7626 */
7627 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7628
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7629 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7630 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7631 if (att_beg >= del_from)
7632 att_beg += delta;
7633 if (att_end >= del_from)
7634 att_end += delta;
7635 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7636 val_end += delta;
7637 next += delta;
7638 hdr_end += delta;
7639 hdr_next += delta;
7640 cur_hdr->len += delta;
7641 http_msg_move_end(&txn->req, delta);
7642 prev = del_from;
7643 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7644 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7645 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7646
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7647 /* Look for the appsession cookie unless persistence must be ignored */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7648 if (!(s->flags & SN_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7649 int cmp_len, value_len;
7650 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7651
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7652 if (s->be->options2 & PR_O2_AS_PFX) {
7653 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
7654 value_begin = att_beg + s->be->appsession_name_len;
7655 value_len = val_end - att_beg - s->be->appsession_name_len;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7656 } else {
7657 cmp_len = att_end - att_beg;
7658 value_begin = val_beg;
7659 value_len = val_end - val_beg;
7660 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7661
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7662 /* let's see if the cookie is our appcookie */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7663 if (cmp_len == s->be->appsession_name_len &&
7664 memcmp(att_beg, s->be->appsession_name, cmp_len) == 0) {
7665 manage_client_side_appsession(s, value_begin, value_len);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7666 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7667 }
7668
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7669 /* continue with next cookie on this header line */
7670 att_beg = next;
7671 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7672
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7673 /* There are no more cookies on this line.
7674 * We may still have one (or several) marked for deletion at the
7675 * end of the line. We must do this now in two ways :
7676 * - if some cookies must be preserved, we only delete from the
7677 * mark to the end of line ;
7678 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7679 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7680 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7681 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7682 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7683 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7684 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7685 cur_hdr->len += delta;
7686 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7687 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7688
7689 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7690 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7691 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7692 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7693 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7694 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7695 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7696 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7697 }
7698
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7699 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7700 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7701 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7702}
7703
7704
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7705/* Iterate the same filter through all response headers contained in <rtr>.
7706 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7707 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7708int apply_filter_to_resp_headers(struct session *s, struct channel *rtr, struct hdr_exp *exp)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7709{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7710 char *cur_ptr, *cur_end, *cur_next;
7711 int cur_idx, old_idx, last_hdr;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7712 struct http_txn *txn = &s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7713 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7714 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7715
7716 last_hdr = 0;
7717
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7718 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7719 old_idx = 0;
7720
7721 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7722 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7723 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7724 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7725 (exp->action == ACT_ALLOW ||
7726 exp->action == ACT_DENY))
7727 return 0;
7728
7729 cur_idx = txn->hdr_idx.v[old_idx].next;
7730 if (!cur_idx)
7731 break;
7732
7733 cur_hdr = &txn->hdr_idx.v[cur_idx];
7734 cur_ptr = cur_next;
7735 cur_end = cur_ptr + cur_hdr->len;
7736 cur_next = cur_end + cur_hdr->cr + 1;
7737
7738 /* Now we have one header between cur_ptr and cur_end,
7739 * and the next header starts at cur_next.
7740 */
7741
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7742 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7743 switch (exp->action) {
7744 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7745 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7746 last_hdr = 1;
7747 break;
7748
7749 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7750 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7751 last_hdr = 1;
7752 break;
7753
7754 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7755 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7756 if (trash.len < 0)
7757 return -1;
7758
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7759 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7760 /* FIXME: if the user adds a newline in the replacement, the
7761 * index will not be recalculated for now, and the new line
7762 * will not be counted as a new header.
7763 */
7764
7765 cur_end += delta;
7766 cur_next += delta;
7767 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7768 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7769 break;
7770
7771 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7772 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7773 cur_next += delta;
7774
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7775 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7776 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7777 txn->hdr_idx.used--;
7778 cur_hdr->len = 0;
7779 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7780 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7781 break;
7782
7783 }
7784 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7785
7786 /* keep the link from this header to next one in case of later
7787 * removal of next header.
7788 */
7789 old_idx = cur_idx;
7790 }
7791 return 0;
7792}
7793
7794
7795/* Apply the filter to the status line in the response buffer <rtr>.
7796 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7797 * or -1 if a replacement resulted in an invalid status line.
7798 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7799int apply_filter_to_sts_line(struct session *s, struct channel *rtr, struct hdr_exp *exp)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7800{
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7801 char *cur_ptr, *cur_end;
7802 int done;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7803 struct http_txn *txn = &s->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7804 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7805
7806
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7807 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7808 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7809 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7810 (exp->action == ACT_ALLOW ||
7811 exp->action == ACT_DENY))
7812 return 0;
7813 else if (exp->action == ACT_REMOVE)
7814 return 0;
7815
7816 done = 0;
7817
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7818 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7819 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7820
7821 /* Now we have the status line between cur_ptr and cur_end */
7822
Willy Tarreau15a53a42015-01-21 13:39:42 +0100[diff] [blame]7823 if (regex_exec_match2(exp->preg, cur_ptr, cur_end-cur_ptr, MAX_MATCH, pmatch, 0)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7824 switch (exp->action) {
7825 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7826 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7827 done = 1;
7828 break;
7829
7830 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7831 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7832 done = 1;
7833 break;
7834
7835 case ACT_REPLACE:
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7836 trash.len = exp_replace(trash.str, trash.size, cur_ptr, exp->replace, pmatch);
7837 if (trash.len < 0)
7838 return -1;
7839
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7840 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7841 /* FIXME: if the user adds a newline in the replacement, the
7842 * index will not be recalculated for now, and the new line
7843 * will not be counted as a new header.
7844 */
7845
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7846 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7847 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7848 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7849 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7850 cur_ptr, cur_end + 1,
7851 NULL, NULL);
7852 if (unlikely(!cur_end))
7853 return -1;
7854
7855 /* we have a full respnse and we know that we have either a CR
7856 * or an LF at <ptr>.
7857 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7858 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]7859 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]7860 /* there is no point trying this regex on headers */
7861 return 1;
7862 }
7863 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7864 return done;
7865}
7866
7867
7868
7869/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7870 * 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]7871 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7872 * unparsable response.
7873 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7874int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7875{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7876 struct http_txn *txn = &s->txn;
7877 struct hdr_exp *exp;
7878
7879 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7880 int ret;
7881
7882 /*
7883 * The interleaving of transformations and verdicts
7884 * makes it difficult to decide to continue or stop
7885 * the evaluation.
7886 */
7887
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7888 if (txn->flags & TX_SVDENY)
7889 break;
7890
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7891 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7892 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7893 exp->action == ACT_PASS)) {
7894 exp = exp->next;
7895 continue;
7896 }
7897
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7898 /* if this filter had a condition, evaluate it now and skip to
7899 * next filter if the condition does not match.
7900 */
7901 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7902 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]7903 ret = acl_pass(ret);
7904 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7905 ret = !ret;
7906 if (!ret)
7907 continue;
7908 }
7909
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7910 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7911 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7912 if (unlikely(ret < 0))
7913 return -1;
7914
7915 if (likely(ret == 0)) {
7916 /* The filter did not match the response, it can be
7917 * iterated through all headers.
7918 */
Sasha Pachevc6002042014-05-26 12:33:48 -0600[diff] [blame]7919 if (unlikely(apply_filter_to_resp_headers(s, rtr, exp) < 0))
7920 return -1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7921 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7922 }
7923 return 0;
7924}
7925
7926
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7927/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7928 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7929 * desirable to call it only when needed. This function is also used when we
7930 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7931 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7932void manage_server_side_cookies(struct session *s, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7933{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7934 struct http_txn *txn = &s->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7935 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7936 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7937 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7938 char *hdr_beg, *hdr_end, *hdr_next;
7939 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7940
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7941 /* Iterate through the headers.
7942 * we start with the start line.
7943 */
7944 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7945 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7946
7947 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7948 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7949 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7950
7951 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7952 hdr_beg = hdr_next;
7953 hdr_end = hdr_beg + cur_hdr->len;
7954 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7955
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7956 /* We have one full header between hdr_beg and hdr_end, and the
7957 * next header starts at hdr_next. We're only interested in
7958 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7959 */
7960
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7961 is_cookie2 = 0;
7962 prev = hdr_beg + 10;
7963 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7964 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7965 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7966 if (!val) {
7967 old_idx = cur_idx;
7968 continue;
7969 }
7970 is_cookie2 = 1;
7971 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7972 }
7973
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7974 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7975 * <prev> points to the colon.
7976 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7977 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7978
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7979 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7980 * check-cache is enabled) and we are not interested in checking
7981 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7982 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]7983 if (s->be->cookie_name == NULL &&
7984 s->be->appsession_name == NULL &&
7985 s->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7986 return;
7987
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7988 /* OK so now we know we have to process this response cookie.
7989 * The format of the Set-Cookie header is slightly different
7990 * from the format of the Cookie header in that it does not
7991 * support the comma as a cookie delimiter (thus the header
7992 * cannot be folded) because the Expires attribute described in
7993 * the original Netscape's spec may contain an unquoted date
7994 * with a comma inside. We have to live with this because
7995 * many browsers don't support Max-Age and some browsers don't
7996 * support quoted strings. However the Set-Cookie2 header is
7997 * clean.
7998 *
7999 * We have to keep multiple pointers in order to support cookie
8000 * removal at the beginning, middle or end of header without
8001 * corrupting the header (in case of set-cookie2). A special
8002 * pointer, <scav> points to the beginning of the set-cookie-av
8003 * fields after the first semi-colon. The <next> pointer points
8004 * either to the end of line (set-cookie) or next unquoted comma
8005 * (set-cookie2). All of these headers are valid :
8006 *
8007 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
8008 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8009 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
8010 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
8011 * | | | | | | | | | |
8012 * | | | | | | | | +-> next hdr_end <--+
8013 * | | | | | | | +------------> scav
8014 * | | | | | | +--------------> val_end
8015 * | | | | | +--------------------> val_beg
8016 * | | | | +----------------------> equal
8017 * | | | +------------------------> att_end
8018 * | | +----------------------------> att_beg
8019 * | +------------------------------> prev
8020 * +-----------------------------------------> hdr_beg
8021 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8022
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8023 for (; prev < hdr_end; prev = next) {
8024 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8025
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8026 /* find att_beg */
8027 att_beg = prev + 1;
8028 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
8029 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8030
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8031 /* find att_end : this is the first character after the last non
8032 * space before the equal. It may be equal to hdr_end.
8033 */
8034 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8035
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8036 while (equal < hdr_end) {
8037 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
8038 break;
8039 if (http_is_spht[(unsigned char)*equal++])
8040 continue;
8041 att_end = equal;
8042 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8043
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8044 /* here, <equal> points to '=', a delimitor or the end. <att_end>
8045 * is between <att_beg> and <equal>, both may be identical.
8046 */
8047
8048 /* look for end of cookie if there is an equal sign */
8049 if (equal < hdr_end && *equal == '=') {
8050 /* look for the beginning of the value */
8051 val_beg = equal + 1;
8052 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
8053 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8054
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8055 /* find the end of the value, respecting quotes */
8056 next = find_cookie_value_end(val_beg, hdr_end);
8057
8058 /* make val_end point to the first white space or delimitor after the value */
8059 val_end = next;
8060 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
8061 val_end--;
8062 } else {
8063 /* <equal> points to next comma, semi-colon or EOL */
8064 val_beg = val_end = next = equal;
8065 }
8066
8067 if (next < hdr_end) {
8068 /* Set-Cookie2 supports multiple cookies, and <next> points to
8069 * a colon or semi-colon before the end. So skip all attr-value
8070 * pairs and look for the next comma. For Set-Cookie, since
8071 * commas are permitted in values, skip to the end.
8072 */
8073 if (is_cookie2)
8074 next = find_hdr_value_end(next, hdr_end);
8075 else
8076 next = hdr_end;
8077 }
8078
8079 /* Now everything is as on the diagram above */
8080
8081 /* Ignore cookies with no equal sign */
8082 if (equal == val_end)
8083 continue;
8084
8085 /* If there are spaces around the equal sign, we need to
8086 * strip them otherwise we'll get trouble for cookie captures,
8087 * or even for rewrites. Since this happens extremely rarely,
8088 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8089 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8090 if (unlikely(att_end != equal || val_beg > equal + 1)) {
8091 int stripped_before = 0;
8092 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8093
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8094 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8095 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8096 equal += stripped_before;
8097 val_beg += stripped_before;
8098 }
8099
8100 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8101 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8102 val_beg += stripped_after;
8103 stripped_before += stripped_after;
8104 }
8105
8106 val_end += stripped_before;
8107 next += stripped_before;
8108 hdr_end += stripped_before;
8109 hdr_next += stripped_before;
8110 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]8111 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8112 }
8113
8114 /* First, let's see if we want to capture this cookie. We check
8115 * that we don't already have a server side cookie, because we
8116 * can only capture one. Also as an optimisation, we ignore
8117 * cookies shorter than the declared name.
8118 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8119 if (s->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]8120 txn->srv_cookie == NULL &&
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8121 (val_end - att_beg >= s->fe->capture_namelen) &&
8122 memcmp(att_beg, s->fe->capture_name, s->fe->capture_namelen) == 0) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8123 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]8124 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8125 Alert("HTTP logging : out of memory.\n");
8126 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8127 else {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8128 if (log_len > s->fe->capture_len)
8129 log_len = s->fe->capture_len;
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]8130 memcpy(txn->srv_cookie, att_beg, log_len);
8131 txn->srv_cookie[log_len] = 0;
8132 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8133 }
8134
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8135 srv = objt_server(s->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8136 /* now check if we need to process it for persistence */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8137 if (!(s->flags & SN_IGNORE_PRST) &&
8138 (att_end - att_beg == s->be->cookie_len) && (s->be->cookie_name != NULL) &&
8139 (memcmp(att_beg, s->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8140 /* assume passive cookie by default */
8141 txn->flags &= ~TX_SCK_MASK;
8142 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8143
8144 /* If the cookie is in insert mode on a known server, we'll delete
8145 * this occurrence because we'll insert another one later.
8146 * 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]8147 * a direct access.
8148 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8149 if (s->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]8150 /* The "preserve" flag was set, we don't want to touch the
8151 * server's cookie.
8152 */
8153 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8154 else if ((srv && (s->be->ck_opts & PR_CK_INS)) ||
8155 ((s->flags & SN_DIRECT) && (s->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8156 /* this cookie must be deleted */
8157 if (*prev == ':' && next == hdr_end) {
8158 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8159 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8160 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
8161 txn->hdr_idx.used--;
8162 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]8163 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8164 hdr_next += delta;
8165 http_msg_move_end(&txn->rsp, delta);
8166 /* note: while both invalid now, <next> and <hdr_end>
8167 * are still equal, so the for() will stop as expected.
8168 */
8169 } else {
8170 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8171 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8172 next = prev;
8173 hdr_end += delta;
8174 hdr_next += delta;
8175 cur_hdr->len += delta;
8176 http_msg_move_end(&txn->rsp, delta);
8177 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8178 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8179 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8180 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8181 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8182 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8183 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8184 * with this server since we know it.
8185 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8186 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8187 next += delta;
8188 hdr_end += delta;
8189 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8190 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8191 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8192
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8193 txn->flags &= ~TX_SCK_MASK;
8194 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8195 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8196 else if (srv && srv->cookie && (s->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8197 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8198 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8199 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8200 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8201 next += delta;
8202 hdr_end += delta;
8203 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8204 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]8205 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8206
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]8207 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]8208 txn->flags &= ~TX_SCK_MASK;
8209 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8210 }
8211 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]8212 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8213 else if (!(s->flags & SN_IGNORE_PRST) && (s->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8214 int cmp_len, value_len;
8215 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8216
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8217 if (s->be->options2 & PR_O2_AS_PFX) {
8218 cmp_len = MIN(val_end - att_beg, s->be->appsession_name_len);
8219 value_begin = att_beg + s->be->appsession_name_len;
8220 value_len = MIN(s->be->appsession_len, val_end - att_beg - s->be->appsession_name_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8221 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8222 cmp_len = att_end - att_beg;
8223 value_begin = val_beg;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8224 value_len = MIN(s->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8225 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8226
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8227 if ((cmp_len == s->be->appsession_name_len) &&
8228 (memcmp(att_beg, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8229 /* free a possibly previously allocated memory */
8230 pool_free2(apools.sessid, txn->sessid);
8231
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8232 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8233 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8234 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8235 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8236 return;
8237 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8238 memcpy(txn->sessid, value_begin, value_len);
8239 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8240 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8241 }
8242 /* that's done for this cookie, check the next one on the same
8243 * line when next != hdr_end (only if is_cookie2).
8244 */
8245 }
8246 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8247 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]8248 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8249
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8250 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8251 appsess *asession = NULL;
8252 /* only do insert, if lookup fails */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8253 asession = appsession_hash_lookup(&(s->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8254 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]8255 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8256 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
8257 Alert("Not enough Memory process_srv():asession:calloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8258 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8259 return;
8260 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8261 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
8262
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8263 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
8264 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8265 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8266 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8267 return;
8268 }
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8269 memcpy(asession->sessid, txn->sessid, s->be->appsession_len);
8270 asession->sessid[s->be->appsession_len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8271
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8272 server_id_len = strlen(objt_server(s->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8273 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]8274 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8275 send_log(s->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
8276 s->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8277 return;
8278 }
8279 asession->serverid[0] = '\0';
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8280 memcpy(asession->serverid, objt_server(s->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8281
8282 asession->request_count = 0;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8283 appsession_hash_insert(&(s->be->htbl_proxy), asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8284 }
8285
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8286 asession->expire = tick_add_ifset(now_ms, s->be->timeout.appsession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]8287 asession->request_count++;
8288 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8289}
8290
8291
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8292/*
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8293 * Check if response is cacheable or not. Updates s->flags.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8294 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8295void check_response_for_cacheability(struct session *s, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8296{
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8297 struct http_txn *txn = &s->txn;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8298 char *p1, *p2;
8299
8300 char *cur_ptr, *cur_end, *cur_next;
8301 int cur_idx;
8302
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]8303 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8304 return;
8305
8306 /* Iterate through the headers.
8307 * we start with the start line.
8308 */
8309 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8310 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8311
8312 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
8313 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8314 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8315
8316 cur_hdr = &txn->hdr_idx.v[cur_idx];
8317 cur_ptr = cur_next;
8318 cur_end = cur_ptr + cur_hdr->len;
8319 cur_next = cur_end + cur_hdr->cr + 1;
8320
8321 /* We have one full header between cur_ptr and cur_end, and the
8322 * next header starts at cur_next. We're only interested in
8323 * "Cookie:" headers.
8324 */
8325
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8326 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
8327 if (val) {
8328 if ((cur_end - (cur_ptr + val) >= 8) &&
8329 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
8330 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
8331 return;
8332 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8333 }
8334
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8335 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
8336 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8337 continue;
8338
8339 /* OK, right now we know we have a cache-control header at cur_ptr */
8340
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]8341 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8342
8343 if (p1 >= cur_end) /* no more info */
8344 continue;
8345
8346 /* p1 is at the beginning of the value */
8347 p2 = p1;
8348
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]8349 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8350 p2++;
8351
8352 /* we have a complete value between p1 and p2 */
8353 if (p2 < cur_end && *p2 == '=') {
8354 /* we have something of the form no-cache="set-cookie" */
8355 if ((cur_end - p1 >= 21) &&
8356 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
8357 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8358 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8359 continue;
8360 }
8361
8362 /* OK, so we know that either p2 points to the end of string or to a comma */
8363 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]8364 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8365 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
8366 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
8367 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8368 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8369 return;
8370 }
8371
8372 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]8373 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]8374 continue;
8375 }
8376 }
8377}
8378
8379
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8380/*
8381 * Try to retrieve a known appsession in the URI, then the associated server.
8382 * If the server is found, it's assigned to the session.
8383 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8384void get_srv_from_appsession(struct session *s, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8385{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8386 char *end_params, *first_param, *cur_param, *next_param;
8387 char separator;
8388 int value_len;
8389
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8390 int mode = s->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8391
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8392 if (s->be->appsession_name == NULL ||
8393 (s->txn.meth != HTTP_METH_GET && s->txn.meth != HTTP_METH_POST && s->txn.meth != HTTP_METH_HEAD)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8394 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8395 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8396
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8397 first_param = NULL;
8398 switch (mode) {
8399 case PR_O2_AS_M_PP:
8400 first_param = memchr(begin, ';', len);
8401 break;
8402 case PR_O2_AS_M_QS:
8403 first_param = memchr(begin, '?', len);
8404 break;
8405 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8406
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8407 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8408 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8409 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8410
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8411 switch (mode) {
8412 case PR_O2_AS_M_PP:
8413 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
8414 end_params = (char *) begin + len;
8415 }
8416 separator = ';';
8417 break;
8418 case PR_O2_AS_M_QS:
8419 end_params = (char *) begin + len;
8420 separator = '&';
8421 break;
8422 default:
8423 /* unknown mode, shouldn't happen */
8424 return;
8425 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8426
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8427 cur_param = next_param = end_params;
8428 while (cur_param > first_param) {
8429 cur_param--;
8430 if ((cur_param[0] == separator) || (cur_param == first_param)) {
8431 /* let's see if this is the appsession parameter */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8432 if ((cur_param + s->be->appsession_name_len + 1 < next_param) &&
8433 ((s->be->options2 & PR_O2_AS_PFX) || cur_param[s->be->appsession_name_len + 1] == '=') &&
8434 (strncasecmp(cur_param + 1, s->be->appsession_name, s->be->appsession_name_len) == 0)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8435 /* Cool... it's the right one */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8436 cur_param += s->be->appsession_name_len + (s->be->options2 & PR_O2_AS_PFX ? 1 : 2);
8437 value_len = MIN(s->be->appsession_len, next_param - cur_param);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8438 if (value_len > 0) {
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8439 manage_client_side_appsession(s, cur_param, value_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]8440 }
8441 break;
8442 }
8443 next_param = cur_param;
8444 }
8445 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8446#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]8447 Alert("get_srv_from_appsession\n");
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8448 appsession_hash_dump(&(s->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8449#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8450}
8451
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8452/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8453 * 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]8454 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8455 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8456 * 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]8457 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8458 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8459 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8460 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]8461int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8462{
8463 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8464 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8465 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8466
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]8467 if (!uri_auth)
8468 return 0;
8469
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]8470 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]8471 return 0;
8472
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]8473 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]8474 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8475 return 0;
8476
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]8477 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8478 return 0;
8479
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8480 return 1;
8481}
8482
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8483/*
8484 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8485 * By default it tries to report the error position as msg->err_pos. However if
8486 * this one is not set, it will then report msg->next, which is the last known
8487 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8488 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8489 */
8490void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8491 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]8492 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8493{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8494 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8495 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]8496
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8497 es->len = MIN(chn->buf->i, sizeof(es->buf));
8498 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8499 len1 = MIN(len1, es->len);
8500 len2 = es->len - len1; /* remaining data if buffer wraps */
8501
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8502 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8503 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8504 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8505
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8506 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8507 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8508 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]8509 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]8510
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8511 es->when = date; // user-visible date
8512 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8513 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8514 es->oe = other_end;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8515 if (objt_conn(s->req->prod->end))
8516 es->src = __objt_conn(s->req->prod->end)->addr.from;
8517 else
8518 memset(&es->src, 0, sizeof(es->src));
8519
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]8520 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]8521 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8522 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8523 es->s_flags = s->flags;
8524 es->t_flags = s->txn.flags;
8525 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8526 es->b_out = chn->buf->o;
8527 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]8528 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]8529 es->m_clen = msg->chunk_len;
8530 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]8531}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]8532
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8533/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8534 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8535 * performed over the whole headers. Otherwise it must contain a valid header
8536 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8537 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8538 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8539 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8540 * -1. The value fetch stops at commas, so this function is suited for use with
8541 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8542 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8543 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8544unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8545 struct hdr_idx *idx, int occ,
8546 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8547{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8548 struct hdr_ctx local_ctx;
8549 char *ptr_hist[MAX_HDR_HISTORY];
8550 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8551 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8552 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8553
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8554 if (!ctx) {
8555 local_ctx.idx = 0;
8556 ctx = &local_ctx;
8557 }
8558
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8559 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8560 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8561 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8562 occ--;
8563 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8564 *vptr = ctx->line + ctx->val;
8565 *vlen = ctx->vlen;
8566 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8567 }
8568 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8569 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8570 }
8571
8572 /* negative occurrence, we scan all the list then walk back */
8573 if (-occ > MAX_HDR_HISTORY)
8574 return 0;
8575
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8576 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8577 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8578 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8579 len_hist[hist_ptr] = ctx->vlen;
8580 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8581 hist_ptr = 0;
8582 found++;
8583 }
8584 if (-occ > found)
8585 return 0;
8586 /* 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]8587 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8588 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8589 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8590 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8591 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8592 if (hist_ptr >= MAX_HDR_HISTORY)
8593 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8594 *vptr = ptr_hist[hist_ptr];
8595 *vlen = len_hist[hist_ptr];
8596 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8597}
8598
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8599/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8600 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8601 * performed over the whole headers. Otherwise it must contain a valid header
8602 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8603 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8604 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8605 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8606 * -1. This function differs from http_get_hdr() in that it only returns full
8607 * line header values and does not stop at commas.
8608 * The return value is 0 if nothing was found, or non-zero otherwise.
8609 */
8610unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8611 struct hdr_idx *idx, int occ,
8612 struct hdr_ctx *ctx, char **vptr, int *vlen)
8613{
8614 struct hdr_ctx local_ctx;
8615 char *ptr_hist[MAX_HDR_HISTORY];
8616 int len_hist[MAX_HDR_HISTORY];
8617 unsigned int hist_ptr;
8618 int found;
8619
8620 if (!ctx) {
8621 local_ctx.idx = 0;
8622 ctx = &local_ctx;
8623 }
8624
8625 if (occ >= 0) {
8626 /* search from the beginning */
8627 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8628 occ--;
8629 if (occ <= 0) {
8630 *vptr = ctx->line + ctx->val;
8631 *vlen = ctx->vlen;
8632 return 1;
8633 }
8634 }
8635 return 0;
8636 }
8637
8638 /* negative occurrence, we scan all the list then walk back */
8639 if (-occ > MAX_HDR_HISTORY)
8640 return 0;
8641
8642 found = hist_ptr = 0;
8643 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8644 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8645 len_hist[hist_ptr] = ctx->vlen;
8646 if (++hist_ptr >= MAX_HDR_HISTORY)
8647 hist_ptr = 0;
8648 found++;
8649 }
8650 if (-occ > found)
8651 return 0;
8652 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8653 * find occurrence -occ, so we have to check [hist_ptr+occ].
8654 */
8655 hist_ptr += occ;
8656 if (hist_ptr >= MAX_HDR_HISTORY)
8657 hist_ptr -= MAX_HDR_HISTORY;
8658 *vptr = ptr_hist[hist_ptr];
8659 *vlen = len_hist[hist_ptr];
8660 return 1;
8661}
8662
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8663/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8664 * Print a debug line with a header. Always stop at the first CR or LF char,
8665 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8666 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8667 */
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8668void debug_hdr(const char *dir, struct session *s, const char *start, const char *end)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8669{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8670 int max;
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8671 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", s->uniq_id, s->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8672 dir,
Willy Tarreauf1fd9dc2014-04-24 20:47:57 +0200[diff] [blame]8673 objt_conn(s->req->prod->end) ? (unsigned short)objt_conn(s->req->prod->end)->t.sock.fd : -1,
8674 objt_conn(s->req->cons->end) ? (unsigned short)objt_conn(s->req->cons->end)->t.sock.fd : -1);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8675
8676 for (max = 0; start + max < end; max++)
8677 if (start[max] == '\r' || start[max] == '\n')
8678 break;
8679
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8680 UBOUND(max, trash.size - trash.len - 3);
8681 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8682 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8683 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8684}
8685
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8686/*
8687 * Initialize a new HTTP transaction for session <s>. It is assumed that all
8688 * the required fields are properly allocated and that we only need to (re)init
8689 * them. This should be used before processing any new request.
8690 */
8691void http_init_txn(struct session *s)
8692{
8693 struct http_txn *txn = &s->txn;
8694 struct proxy *fe = s->fe;
8695
8696 txn->flags = 0;
8697 txn->status = -1;
8698
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8699 txn->cookie_first_date = 0;
8700 txn->cookie_last_date = 0;
8701
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8702 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8703 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8704 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8705 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8706 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8707 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8708 txn->req.chunk_len = 0LL;
8709 txn->req.body_len = 0LL;
8710 txn->rsp.chunk_len = 0LL;
8711 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8712 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8713 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8714 txn->req.chn = s->req;
8715 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8716
8717 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8718
8719 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8720 if (fe->options2 & PR_O2_REQBUG_OK)
8721 txn->req.err_pos = -1; /* let buggy requests pass */
8722
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8723 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8724 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8725
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8726 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8727 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8728
8729 if (txn->hdr_idx.v)
8730 hdr_idx_init(&txn->hdr_idx);
8731}
8732
8733/* to be used at the end of a transaction */
8734void http_end_txn(struct session *s)
8735{
8736 struct http_txn *txn = &s->txn;
8737
Willy Tarreau75195602014-03-11 15:48:55 +0100[diff] [blame]8738 /* release any possible compression context */
8739 if (s->flags & SN_COMP_READY)
8740 s->comp_algo->end(&s->comp_ctx);
8741 s->comp_algo = NULL;
8742 s->flags &= ~SN_COMP_READY;
8743
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8744 /* these ones will have been dynamically allocated */
8745 pool_free2(pool2_requri, txn->uri);
8746 pool_free2(pool2_capture, txn->cli_cookie);
8747 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8748 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8749 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8750
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8751 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8752 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8753 txn->uri = NULL;
8754 txn->srv_cookie = NULL;
8755 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8756
8757 if (txn->req.cap) {
8758 struct cap_hdr *h;
8759 for (h = s->fe->req_cap; h; h = h->next)
8760 pool_free2(h->pool, txn->req.cap[h->index]);
8761 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8762 }
8763
8764 if (txn->rsp.cap) {
8765 struct cap_hdr *h;
8766 for (h = s->fe->rsp_cap; h; h = h->next)
8767 pool_free2(h->pool, txn->rsp.cap[h->index]);
8768 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8769 }
8770
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8771}
8772
8773/* to be used at the end of a transaction to prepare a new one */
8774void http_reset_txn(struct session *s)
8775{
8776 http_end_txn(s);
8777 http_init_txn(s);
8778
8779 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8780 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8781 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8782 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8783 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8784 /* re-init store persistence */
8785 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8786 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8787
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8788 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8789
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8790 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8791
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8792 /* We must trim any excess data from the response buffer, because we
8793 * may have blocked an invalid response from a server that we don't
8794 * want to accidentely forward once we disable the analysers, nor do
8795 * we want those data to come along with next response. A typical
8796 * example of such data would be from a buggy server responding to
8797 * a HEAD with some data, or sending more than the advertised
8798 * content-length.
8799 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8800 if (unlikely(s->rep->buf->i))
8801 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8802
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8803 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8804 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8805
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8806 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8807 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8808
8809 s->req->rex = TICK_ETERNITY;
8810 s->req->wex = TICK_ETERNITY;
8811 s->req->analyse_exp = TICK_ETERNITY;
8812 s->rep->rex = TICK_ETERNITY;
8813 s->rep->wex = TICK_ETERNITY;
8814 s->rep->analyse_exp = TICK_ETERNITY;
8815}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8816
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8817void free_http_res_rules(struct list *r)
8818{
8819 struct http_res_rule *tr, *pr;
8820
8821 list_for_each_entry_safe(pr, tr, r, list) {
8822 LIST_DEL(&pr->list);
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8823 regex_free(&pr->arg.hdr_add.re);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8824 free(pr);
8825 }
8826}
8827
8828void free_http_req_rules(struct list *r)
8829{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8830 struct http_req_rule *tr, *pr;
8831
8832 list_for_each_entry_safe(pr, tr, r, list) {
8833 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8834 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8835 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8836
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8837 regex_free(&pr->arg.hdr_add.re);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8838 free(pr);
8839 }
8840}
8841
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8842/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8843struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8844{
8845 struct http_req_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]8846 struct http_req_action_kw *custom = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8847 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8848 char *error;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8849
8850 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8851 if (!rule) {
8852 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8853 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8854 }
8855
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8856 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8857 rule->action = HTTP_REQ_ACT_ALLOW;
8858 cur_arg = 1;
Willy Tarreau5bd67592014-04-28 22:00:46 +0200[diff] [blame]8859 } else if (!strcmp(args[0], "deny") || !strcmp(args[0], "block")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8860 rule->action = HTTP_REQ_ACT_DENY;
8861 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8862 } else if (!strcmp(args[0], "tarpit")) {
8863 rule->action = HTTP_REQ_ACT_TARPIT;
8864 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8865 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8866 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8867 cur_arg = 1;
8868
8869 while(*args[cur_arg]) {
8870 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8871 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8872 cur_arg+=2;
8873 continue;
8874 } else
8875 break;
8876 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8877 } else if (!strcmp(args[0], "set-nice")) {
8878 rule->action = HTTP_REQ_ACT_SET_NICE;
8879 cur_arg = 1;
8880
8881 if (!*args[cur_arg] ||
8882 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8883 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8884 file, linenum, args[0]);
8885 goto out_err;
8886 }
8887 rule->arg.nice = atoi(args[cur_arg]);
8888 if (rule->arg.nice < -1024)
8889 rule->arg.nice = -1024;
8890 else if (rule->arg.nice > 1024)
8891 rule->arg.nice = 1024;
8892 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8893 } else if (!strcmp(args[0], "set-tos")) {
8894#ifdef IP_TOS
8895 char *err;
8896 rule->action = HTTP_REQ_ACT_SET_TOS;
8897 cur_arg = 1;
8898
8899 if (!*args[cur_arg] ||
8900 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8901 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8902 file, linenum, args[0]);
8903 goto out_err;
8904 }
8905
8906 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8907 if (err && *err != '\0') {
8908 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8909 file, linenum, err, args[0]);
8910 goto out_err;
8911 }
8912 cur_arg++;
8913#else
8914 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8915 goto out_err;
8916#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8917 } else if (!strcmp(args[0], "set-mark")) {
8918#ifdef SO_MARK
8919 char *err;
8920 rule->action = HTTP_REQ_ACT_SET_MARK;
8921 cur_arg = 1;
8922
8923 if (!*args[cur_arg] ||
8924 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8925 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8926 file, linenum, args[0]);
8927 goto out_err;
8928 }
8929
8930 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8931 if (err && *err != '\0') {
8932 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8933 file, linenum, err, args[0]);
8934 goto out_err;
8935 }
8936 cur_arg++;
8937 global.last_checks |= LSTCHK_NETADM;
8938#else
8939 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8940 goto out_err;
8941#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8942 } else if (!strcmp(args[0], "set-log-level")) {
8943 rule->action = HTTP_REQ_ACT_SET_LOGL;
8944 cur_arg = 1;
8945
8946 if (!*args[cur_arg] ||
8947 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8948 bad_log_level:
8949 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8950 file, linenum, args[0]);
8951 goto out_err;
8952 }
8953 if (strcmp(args[cur_arg], "silent") == 0)
8954 rule->arg.loglevel = -1;
8955 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8956 goto bad_log_level;
8957 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8958 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8959 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8960 cur_arg = 1;
8961
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8962 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8963 (*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]8964 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8965 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8966 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8967 }
8968
8969 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8970 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8971 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8972
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8973 proxy->conf.args.ctx = ARGC_HRQ;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]8974 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]8975 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
8976 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8977 free(proxy->conf.lfs_file);
8978 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8979 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8980 cur_arg += 2;
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]8981 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
8982 rule->action = args[0][8] == 'h' ? HTTP_REQ_ACT_REPLACE_HDR : HTTP_REQ_ACT_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8983 cur_arg = 1;
8984
8985 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann92df3702014-06-24 11:10:00 +0200[diff] [blame]8986 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]8987 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 3 arguments.\n",
8988 file, linenum, args[0]);
8989 goto out_err;
8990 }
8991
8992 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8993 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8994 LIST_INIT(&rule->arg.hdr_add.fmt);
8995
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]8996 error = NULL;
8997 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
8998 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
8999 args[cur_arg + 1], error);
9000 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9001 goto out_err;
9002 }
9003
9004 proxy->conf.args.ctx = ARGC_HRQ;
9005 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9006 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9007 file, linenum);
9008
9009 free(proxy->conf.lfs_file);
9010 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9011 proxy->conf.lfs_line = proxy->conf.args.line;
9012 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9013 } else if (strcmp(args[0], "del-header") == 0) {
9014 rule->action = HTTP_REQ_ACT_DEL_HDR;
9015 cur_arg = 1;
9016
9017 if (!*args[cur_arg] ||
9018 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9019 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9020 file, linenum, args[0]);
9021 goto out_err;
9022 }
9023
9024 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9025 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9026
9027 proxy->conf.args.ctx = ARGC_HRQ;
9028 free(proxy->conf.lfs_file);
9029 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9030 proxy->conf.lfs_line = proxy->conf.args.line;
9031 cur_arg += 1;
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9032 } else if (strncmp(args[0], "track-sc", 8) == 0 &&
9033 args[0][9] == '\0' && args[0][8] >= '0' &&
Willy Tarreaue1cfc1f2014-10-17 11:53:05 +0200[diff] [blame]9034 args[0][8] < '0' + MAX_SESS_STKCTR) { /* track-sc 0..9 */
Willy Tarreau09448f72014-06-25 18:12:15 +0200[diff] [blame]9035 struct sample_expr *expr;
9036 unsigned int where;
9037 char *err = NULL;
9038
9039 cur_arg = 1;
9040 proxy->conf.args.ctx = ARGC_TRK;
9041
9042 expr = sample_parse_expr((char **)args, &cur_arg, file, linenum, &err, &proxy->conf.args);
9043 if (!expr) {
9044 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9045 file, linenum, proxy_type_str(proxy), proxy->id, args[0], err);
9046 free(err);
9047 goto out_err;
9048 }
9049
9050 where = 0;
9051 if (proxy->cap & PR_CAP_FE)
9052 where |= SMP_VAL_FE_HRQ_HDR;
9053 if (proxy->cap & PR_CAP_BE)
9054 where |= SMP_VAL_BE_HRQ_HDR;
9055
9056 if (!(expr->fetch->val & where)) {
9057 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule :"
9058 " fetch method '%s' extracts information from '%s', none of which is available here.\n",
9059 file, linenum, proxy_type_str(proxy), proxy->id, args[0],
9060 args[cur_arg-1], sample_src_names(expr->fetch->use));
9061 free(expr);
9062 goto out_err;
9063 }
9064
9065 if (strcmp(args[cur_arg], "table") == 0) {
9066 cur_arg++;
9067 if (!args[cur_arg]) {
9068 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : missing table name.\n",
9069 file, linenum, proxy_type_str(proxy), proxy->id, args[0]);
9070 free(expr);
9071 goto out_err;
9072 }
9073 /* we copy the table name for now, it will be resolved later */
9074 rule->act_prm.trk_ctr.table.n = strdup(args[cur_arg]);
9075 cur_arg++;
9076 }
9077 rule->act_prm.trk_ctr.expr = expr;
9078 rule->action = HTTP_REQ_ACT_TRK_SC0 + args[0][8] - '0';
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9079 } else if (strcmp(args[0], "redirect") == 0) {
9080 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]9081 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9082
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9083 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]9084 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9085 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9086 goto out_err;
9087 }
9088
9089 /* this redirect rule might already contain a parsed condition which
9090 * we'll pass to the http-request rule.
9091 */
9092 rule->action = HTTP_REQ_ACT_REDIR;
9093 rule->arg.redir = redir;
9094 rule->cond = redir->cond;
9095 redir->cond = NULL;
9096 cur_arg = 2;
9097 return rule;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9098 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9099 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9100 rule->action = HTTP_REQ_ACT_ADD_ACL;
9101 /*
9102 * '+ 8' for 'add-acl('
9103 * '- 9' for 'add-acl(' + trailing ')'
9104 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9105 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9106
9107 cur_arg = 1;
9108
9109 if (!*args[cur_arg] ||
9110 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9111 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9112 file, linenum, args[0]);
9113 goto out_err;
9114 }
9115
9116 LIST_INIT(&rule->arg.map.key);
9117 proxy->conf.args.ctx = ARGC_HRQ;
9118 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9119 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9120 file, linenum);
9121 free(proxy->conf.lfs_file);
9122 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9123 proxy->conf.lfs_line = proxy->conf.args.line;
9124 cur_arg += 1;
9125 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9126 /* http-request del-acl(<reference (acl name)>) <key pattern> */
9127 rule->action = HTTP_REQ_ACT_DEL_ACL;
9128 /*
9129 * '+ 8' for 'del-acl('
9130 * '- 9' for 'del-acl(' + trailing ')'
9131 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9132 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9133
9134 cur_arg = 1;
9135
9136 if (!*args[cur_arg] ||
9137 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9138 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9139 file, linenum, args[0]);
9140 goto out_err;
9141 }
9142
9143 LIST_INIT(&rule->arg.map.key);
9144 proxy->conf.args.ctx = ARGC_HRQ;
9145 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9146 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9147 file, linenum);
9148 free(proxy->conf.lfs_file);
9149 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9150 proxy->conf.lfs_line = proxy->conf.args.line;
9151 cur_arg += 1;
9152 } else if (strncmp(args[0], "del-map", 7) == 0) {
9153 /* http-request del-map(<reference (map name)>) <key pattern> */
9154 rule->action = HTTP_REQ_ACT_DEL_MAP;
9155 /*
9156 * '+ 8' for 'del-map('
9157 * '- 9' for 'del-map(' + trailing ')'
9158 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9159 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9160
9161 cur_arg = 1;
9162
9163 if (!*args[cur_arg] ||
9164 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9165 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument.\n",
9166 file, linenum, args[0]);
9167 goto out_err;
9168 }
9169
9170 LIST_INIT(&rule->arg.map.key);
9171 proxy->conf.args.ctx = ARGC_HRQ;
9172 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9173 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9174 file, linenum);
9175 free(proxy->conf.lfs_file);
9176 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9177 proxy->conf.lfs_line = proxy->conf.args.line;
9178 cur_arg += 1;
9179 } else if (strncmp(args[0], "set-map", 7) == 0) {
9180 /* http-request set-map(<reference (map name)>) <key pattern> <value pattern> */
9181 rule->action = HTTP_REQ_ACT_SET_MAP;
9182 /*
9183 * '+ 8' for 'set-map('
9184 * '- 9' for 'set-map(' + trailing ')'
9185 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9186 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9187
9188 cur_arg = 1;
9189
9190 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9191 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9192 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
9193 file, linenum, args[0]);
9194 goto out_err;
9195 }
9196
9197 LIST_INIT(&rule->arg.map.key);
9198 LIST_INIT(&rule->arg.map.value);
9199 proxy->conf.args.ctx = ARGC_HRQ;
9200
9201 /* key pattern */
9202 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9203 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9204 file, linenum);
9205
9206 /* value pattern */
9207 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9208 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9209 file, linenum);
9210 free(proxy->conf.lfs_file);
9211 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9212 proxy->conf.lfs_line = proxy->conf.args.line;
9213
9214 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9215 } else if (((custom = action_http_req_custom(args[0])) != NULL)) {
9216 char *errmsg = NULL;
9217 cur_arg = 1;
9218 /* try in the module list */
9219 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9220 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
9221 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9222 free(errmsg);
9223 goto out_err;
9224 }
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9225 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9226 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', 'tarpit', 'add-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', 'set-tos', 'set-mark', 'set-log-level', 'add-acl', 'del-acl', 'del-map', 'set-map', but got '%s'%s.\n",
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]9227 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9228 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9229 }
9230
9231 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9232 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9233 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9234
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]9235 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9236 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
9237 file, linenum, args[0], errmsg);
9238 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9239 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9240 }
9241 rule->cond = cond;
9242 }
9243 else if (*args[cur_arg]) {
9244 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
9245 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9246 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9247 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9248 }
9249
9250 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]9251 out_err:
9252 free(rule);
9253 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]9254}
9255
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9256/* parse an "http-respose" rule */
9257struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
9258{
9259 struct http_res_rule *rule;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9260 struct http_res_action_kw *custom = NULL;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9261 int cur_arg;
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9262 char *error;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9263
9264 rule = calloc(1, sizeof(*rule));
9265 if (!rule) {
9266 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
9267 goto out_err;
9268 }
9269
9270 if (!strcmp(args[0], "allow")) {
9271 rule->action = HTTP_RES_ACT_ALLOW;
9272 cur_arg = 1;
9273 } else if (!strcmp(args[0], "deny")) {
9274 rule->action = HTTP_RES_ACT_DENY;
9275 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]9276 } else if (!strcmp(args[0], "set-nice")) {
9277 rule->action = HTTP_RES_ACT_SET_NICE;
9278 cur_arg = 1;
9279
9280 if (!*args[cur_arg] ||
9281 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9282 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
9283 file, linenum, args[0]);
9284 goto out_err;
9285 }
9286 rule->arg.nice = atoi(args[cur_arg]);
9287 if (rule->arg.nice < -1024)
9288 rule->arg.nice = -1024;
9289 else if (rule->arg.nice > 1024)
9290 rule->arg.nice = 1024;
9291 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]9292 } else if (!strcmp(args[0], "set-tos")) {
9293#ifdef IP_TOS
9294 char *err;
9295 rule->action = HTTP_RES_ACT_SET_TOS;
9296 cur_arg = 1;
9297
9298 if (!*args[cur_arg] ||
9299 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9300 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9301 file, linenum, args[0]);
9302 goto out_err;
9303 }
9304
9305 rule->arg.tos = strtol(args[cur_arg], &err, 0);
9306 if (err && *err != '\0') {
9307 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9308 file, linenum, err, args[0]);
9309 goto out_err;
9310 }
9311 cur_arg++;
9312#else
9313 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
9314 goto out_err;
9315#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]9316 } else if (!strcmp(args[0], "set-mark")) {
9317#ifdef SO_MARK
9318 char *err;
9319 rule->action = HTTP_RES_ACT_SET_MARK;
9320 cur_arg = 1;
9321
9322 if (!*args[cur_arg] ||
9323 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9324 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
9325 file, linenum, args[0]);
9326 goto out_err;
9327 }
9328
9329 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
9330 if (err && *err != '\0') {
9331 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
9332 file, linenum, err, args[0]);
9333 goto out_err;
9334 }
9335 cur_arg++;
9336 global.last_checks |= LSTCHK_NETADM;
9337#else
9338 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
9339 goto out_err;
9340#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]9341 } else if (!strcmp(args[0], "set-log-level")) {
9342 rule->action = HTTP_RES_ACT_SET_LOGL;
9343 cur_arg = 1;
9344
9345 if (!*args[cur_arg] ||
9346 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
9347 bad_log_level:
9348 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
9349 file, linenum, args[0]);
9350 goto out_err;
9351 }
9352 if (strcmp(args[cur_arg], "silent") == 0)
9353 rule->arg.loglevel = -1;
9354 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
9355 goto bad_log_level;
9356 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9357 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
9358 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
9359 cur_arg = 1;
9360
9361 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9362 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9363 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9364 file, linenum, args[0]);
9365 goto out_err;
9366 }
9367
9368 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9369 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9370 LIST_INIT(&rule->arg.hdr_add.fmt);
9371
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]9372 proxy->conf.args.ctx = ARGC_HRS;
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9373 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]9374 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9375 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9376 free(proxy->conf.lfs_file);
9377 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9378 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9379 cur_arg += 2;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9380 } else if (strcmp(args[0], "replace-header") == 0 || strcmp(args[0], "replace-value") == 0) {
Willy Tarreaub8543922014-06-17 18:58:26 +0200[diff] [blame]9381 rule->action = args[0][8] == 'h' ? HTTP_RES_ACT_REPLACE_HDR : HTTP_RES_ACT_REPLACE_VAL;
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9382 cur_arg = 1;
9383
9384 if (!*args[cur_arg] || !*args[cur_arg+1] || !*args[cur_arg+2] ||
Baptiste Assmann12cb00b2014-08-08 17:29:06 +0200[diff] [blame]9385 (*args[cur_arg+3] && strcmp(args[cur_arg+3], "if") != 0 && strcmp(args[cur_arg+3], "unless") != 0)) {
9386 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 3 arguments.\n",
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9387 file, linenum, args[0]);
9388 goto out_err;
9389 }
9390
9391 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9392 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9393 LIST_INIT(&rule->arg.hdr_add.fmt);
9394
Thierry FOURNIER09af0d62014-06-18 11:35:54 +0200[diff] [blame]9395 error = NULL;
9396 if (!regex_comp(args[cur_arg + 1], &rule->arg.hdr_add.re, 1, 1, &error)) {
9397 Alert("parsing [%s:%d] : '%s' : %s.\n", file, linenum,
9398 args[cur_arg + 1], error);
9399 free(error);
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9400 goto out_err;
9401 }
9402
9403 proxy->conf.args.ctx = ARGC_HRQ;
9404 parse_logformat_string(args[cur_arg + 2], proxy, &rule->arg.hdr_add.fmt, LOG_OPT_HTTP,
9405 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9406 file, linenum);
9407
9408 free(proxy->conf.lfs_file);
9409 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9410 proxy->conf.lfs_line = proxy->conf.args.line;
9411 cur_arg += 3;
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9412 } else if (strcmp(args[0], "del-header") == 0) {
9413 rule->action = HTTP_RES_ACT_DEL_HDR;
9414 cur_arg = 1;
9415
9416 if (!*args[cur_arg] ||
9417 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9418 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9419 file, linenum, args[0]);
9420 goto out_err;
9421 }
9422
9423 rule->arg.hdr_add.name = strdup(args[cur_arg]);
9424 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
9425
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9426 proxy->conf.args.ctx = ARGC_HRS;
9427 free(proxy->conf.lfs_file);
9428 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9429 proxy->conf.lfs_line = proxy->conf.args.line;
9430 cur_arg += 1;
9431 } else if (strncmp(args[0], "add-acl", 7) == 0) {
9432 /* http-request add-acl(<reference (acl name)>) <key pattern> */
9433 rule->action = HTTP_RES_ACT_ADD_ACL;
9434 /*
9435 * '+ 8' for 'add-acl('
9436 * '- 9' for 'add-acl(' + trailing ')'
9437 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9438 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9439
9440 cur_arg = 1;
9441
9442 if (!*args[cur_arg] ||
9443 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9444 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9445 file, linenum, args[0]);
9446 goto out_err;
9447 }
9448
9449 LIST_INIT(&rule->arg.map.key);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9450 proxy->conf.args.ctx = ARGC_HRS;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9451 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9452 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9453 file, linenum);
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9454 free(proxy->conf.lfs_file);
9455 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9456 proxy->conf.lfs_line = proxy->conf.args.line;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9457
Thierry FOURNIERdad3d1d2014-04-22 18:07:25 +0200[diff] [blame]9458 cur_arg += 1;
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9459 } else if (strncmp(args[0], "del-acl", 7) == 0) {
9460 /* http-response del-acl(<reference (acl name)>) <key pattern> */
9461 rule->action = HTTP_RES_ACT_DEL_ACL;
9462 /*
9463 * '+ 8' for 'del-acl('
9464 * '- 9' for 'del-acl(' + trailing ')'
9465 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9466 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9467
9468 cur_arg = 1;
9469
9470 if (!*args[cur_arg] ||
9471 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9472 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9473 file, linenum, args[0]);
9474 goto out_err;
9475 }
9476
9477 LIST_INIT(&rule->arg.map.key);
9478 proxy->conf.args.ctx = ARGC_HRS;
9479 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9480 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9481 file, linenum);
9482 free(proxy->conf.lfs_file);
9483 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9484 proxy->conf.lfs_line = proxy->conf.args.line;
9485 cur_arg += 1;
9486 } else if (strncmp(args[0], "del-map", 7) == 0) {
9487 /* http-response del-map(<reference (map name)>) <key pattern> */
9488 rule->action = HTTP_RES_ACT_DEL_MAP;
9489 /*
9490 * '+ 8' for 'del-map('
9491 * '- 9' for 'del-map(' + trailing ')'
9492 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9493 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9494
9495 cur_arg = 1;
9496
9497 if (!*args[cur_arg] ||
9498 (*args[cur_arg+1] && strcmp(args[cur_arg+1], "if") != 0 && strcmp(args[cur_arg+1], "unless") != 0)) {
9499 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument.\n",
9500 file, linenum, args[0]);
9501 goto out_err;
9502 }
9503
9504 LIST_INIT(&rule->arg.map.key);
9505 proxy->conf.args.ctx = ARGC_HRS;
9506 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9507 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9508 file, linenum);
9509 free(proxy->conf.lfs_file);
9510 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9511 proxy->conf.lfs_line = proxy->conf.args.line;
9512 cur_arg += 1;
9513 } else if (strncmp(args[0], "set-map", 7) == 0) {
9514 /* http-response set-map(<reference (map name)>) <key pattern> <value pattern> */
9515 rule->action = HTTP_RES_ACT_SET_MAP;
9516 /*
9517 * '+ 8' for 'set-map('
9518 * '- 9' for 'set-map(' + trailing ')'
9519 */
Willy Tarreau6c09c2c2014-04-25 21:38:08 +0200[diff] [blame]9520 rule->arg.map.ref = my_strndup(args[0] + 8, strlen(args[0]) - 9);
Baptiste Assmannfabcbe02014-04-24 22:16:59 +0200[diff] [blame]9521
9522 cur_arg = 1;
9523
9524 if (!*args[cur_arg] || !*args[cur_arg+1] ||
9525 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
9526 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
9527 file, linenum, args[0]);
9528 goto out_err;
9529 }
9530
9531 LIST_INIT(&rule->arg.map.key);
9532 LIST_INIT(&rule->arg.map.value);
9533
9534 proxy->conf.args.ctx = ARGC_HRS;
9535
9536 /* key pattern */
9537 parse_logformat_string(args[cur_arg], proxy, &rule->arg.map.key, LOG_OPT_HTTP,
9538 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9539 file, linenum);
9540
9541 /* value pattern */
9542 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.map.value, LOG_OPT_HTTP,
9543 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR,
9544 file, linenum);
9545
9546 free(proxy->conf.lfs_file);
9547 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
9548 proxy->conf.lfs_line = proxy->conf.args.line;
9549
9550 cur_arg += 2;
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]9551 } else if (((custom = action_http_res_custom(args[0])) != NULL)) {
9552 char *errmsg = NULL;
9553 cur_arg = 1;
9554 /* try in the module list */
9555 if (custom->parse(args, &cur_arg, proxy, rule, &errmsg) < 0) {
9556 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-response %s' rule : %s.\n",
9557 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
9558 free(errmsg);
9559 goto out_err;
9560 }
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9561 } else {
Sasha Pachev218f0642014-06-16 12:05:59 -0600[diff] [blame]9562 Alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', 'add-header', 'del-header', 'set-header', 'replace-header', 'replace-value', 'set-nice', 'set-tos', 'set-mark', 'set-log-level', 'del-acl', 'add-acl', 'del-map', 'set-map', but got '%s'%s.\n",
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]9563 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
9564 goto out_err;
9565 }
9566
9567 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
9568 struct acl_cond *cond;
9569 char *errmsg = NULL;
9570
9571 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
9572 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
9573 file, linenum, args[0], errmsg);
9574 free(errmsg);
9575 goto out_err;
9576 }
9577 rule->cond = cond;
9578 }
9579 else if (*args[cur_arg]) {
9580 Alert("parsing [%s:%d]: 'http-response %s' expects"
9581 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
9582 file, linenum, args[0], args[cur_arg]);
9583 goto out_err;
9584 }
9585
9586 return rule;
9587 out_err:
9588 free(rule);
9589 return NULL;
9590}
9591
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9592/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9593 * with <err> filled with the error message. If <use_fmt> is not null, builds a
9594 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9595 */
9596struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9597 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9598{
9599 struct redirect_rule *rule;
9600 int cur_arg;
9601 int type = REDIRECT_TYPE_NONE;
9602 int code = 302;
9603 const char *destination = NULL;
9604 const char *cookie = NULL;
9605 int cookie_set = 0;
9606 unsigned int flags = REDIRECT_FLAG_NONE;
9607 struct acl_cond *cond = NULL;
9608
9609 cur_arg = 0;
9610 while (*(args[cur_arg])) {
9611 if (strcmp(args[cur_arg], "location") == 0) {
9612 if (!*args[cur_arg + 1])
9613 goto missing_arg;
9614
9615 type = REDIRECT_TYPE_LOCATION;
9616 cur_arg++;
9617 destination = args[cur_arg];
9618 }
9619 else if (strcmp(args[cur_arg], "prefix") == 0) {
9620 if (!*args[cur_arg + 1])
9621 goto missing_arg;
9622
9623 type = REDIRECT_TYPE_PREFIX;
9624 cur_arg++;
9625 destination = args[cur_arg];
9626 }
9627 else if (strcmp(args[cur_arg], "scheme") == 0) {
9628 if (!*args[cur_arg + 1])
9629 goto missing_arg;
9630
9631 type = REDIRECT_TYPE_SCHEME;
9632 cur_arg++;
9633 destination = args[cur_arg];
9634 }
9635 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
9636 if (!*args[cur_arg + 1])
9637 goto missing_arg;
9638
9639 cur_arg++;
9640 cookie = args[cur_arg];
9641 cookie_set = 1;
9642 }
9643 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
9644 if (!*args[cur_arg + 1])
9645 goto missing_arg;
9646
9647 cur_arg++;
9648 cookie = args[cur_arg];
9649 cookie_set = 0;
9650 }
9651 else if (strcmp(args[cur_arg], "code") == 0) {
9652 if (!*args[cur_arg + 1])
9653 goto missing_arg;
9654
9655 cur_arg++;
9656 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9657 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9658 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]9659 "'%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]9660 args[cur_arg - 1], args[cur_arg]);
9661 return NULL;
9662 }
9663 }
9664 else if (!strcmp(args[cur_arg],"drop-query")) {
9665 flags |= REDIRECT_FLAG_DROP_QS;
9666 }
9667 else if (!strcmp(args[cur_arg],"append-slash")) {
9668 flags |= REDIRECT_FLAG_APPEND_SLASH;
9669 }
9670 else if (strcmp(args[cur_arg], "if") == 0 ||
9671 strcmp(args[cur_arg], "unless") == 0) {
9672 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
9673 if (!cond) {
9674 memprintf(errmsg, "error in condition: %s", *errmsg);
9675 return NULL;
9676 }
9677 break;
9678 }
9679 else {
9680 memprintf(errmsg,
9681 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
9682 args[cur_arg]);
9683 return NULL;
9684 }
9685 cur_arg++;
9686 }
9687
9688 if (type == REDIRECT_TYPE_NONE) {
9689 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
9690 return NULL;
9691 }
9692
9693 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
9694 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]9695 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9696
9697 if (!use_fmt) {
9698 /* old-style static redirect rule */
9699 rule->rdr_str = strdup(destination);
9700 rule->rdr_len = strlen(destination);
9701 }
9702 else {
9703 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9704
9705 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
9706 * if prefix == "/", we don't want to add anything, otherwise it
9707 * makes it hard for the user to configure a self-redirection.
9708 */
Godbachd9722032014-12-18 15:44:58 +0800[diff] [blame]9709 curproxy->conf.args.ctx = ARGC_RDR;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9710 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
Thierry FOURNIERd048d8b2014-03-13 16:46:18 +0100[diff] [blame]9711 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, LOG_OPT_HTTP,
Thierry FOURNIEReeaa9512014-02-11 14:00:19 +0100[diff] [blame]9712 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
9713 file, linenum);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]9714 free(curproxy->conf.lfs_file);
9715 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
9716 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]9717 }
9718 }
9719
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]9720 if (cookie) {
9721 /* depending on cookie_set, either we want to set the cookie, or to clear it.
9722 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
9723 */
9724 rule->cookie_len = strlen(cookie);
9725 if (cookie_set) {
9726 rule->cookie_str = malloc(rule->cookie_len + 10);
9727 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9728 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
9729 rule->cookie_len += 9;
9730 } else {
9731 rule->cookie_str = malloc(rule->cookie_len + 21);
9732 memcpy(rule->cookie_str, cookie, rule->cookie_len);
9733 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
9734 rule->cookie_len += 20;
9735 }
9736 }
9737 rule->type = type;
9738 rule->code = code;
9739 rule->flags = flags;
9740 LIST_INIT(&rule->list);
9741 return rule;
9742
9743 missing_arg:
9744 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
9745 return NULL;
9746}
9747
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9748/************************************************************************/
9749/* The code below is dedicated to ACL parsing and matching */
9750/************************************************************************/
9751
9752
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9753/* This function ensures that the prerequisites for an L7 fetch are ready,
9754 * which means that a request or response is ready. If some data is missing,
9755 * 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]9756 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
9757 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9758 *
9759 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9760 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
9761 * decide whether or not an HTTP message is present ;
9762 * 0 if the requested data cannot be fetched or if it is certain that
9763 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9764 * 1 if an HTTP message is ready
9765 */
9766static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9767smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9768 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9769{
9770 struct http_txn *txn = l7;
9771 struct http_msg *msg = &txn->req;
9772
9773 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9774 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9775 */
9776
9777 if (unlikely(!s || !txn))
9778 return 0;
9779
9780 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9781 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9782
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9783 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9784 if (unlikely(!s->req))
9785 return 0;
9786
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9787 /* If the buffer does not leave enough free space at the end,
9788 * we must first realign it.
9789 */
9790 if (s->req->buf->p > s->req->buf->data &&
9791 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
9792 buffer_slow_realign(s->req->buf);
9793
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9794 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]9795 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9796 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9797
9798 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9799 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9800 http_msg_analyzer(msg, &txn->hdr_idx);
9801
9802 /* Still no valid request ? */
9803 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]9804 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9805 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9806 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9807 }
9808 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9809 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9810 return 0;
9811 }
9812
9813 /* OK we just got a valid HTTP request. We have some minor
9814 * preparation to perform so that further checks can rely
9815 * on HTTP tests.
9816 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9817
9818 /* If the request was parsed but was too large, we must absolutely
9819 * return an error so that it is not processed. At the moment this
9820 * cannot happen, but if the parsers are to change in the future,
9821 * we want this check to be maintained.
9822 */
9823 if (unlikely(s->req->buf->i + s->req->buf->p >
9824 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
9825 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9826 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]9827 return 1;
9828 }
9829
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9830 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9831 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
9832 s->flags |= SN_REDIRECTABLE;
9833
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9834 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
9835 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9836 }
9837
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9838 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9839 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9840 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9841
9842 /* otherwise everything's ready for the request */
9843 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9844 else {
9845 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9846 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
9847 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9848 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9849 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9850 }
9851
9852 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9853 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]9854 return 1;
9855}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9856
Willy Tarreau6c616e02014-06-25 16:56:41 +0200[diff] [blame]9857/* Note: these functinos *do* modify the sample. Even in case of success, at
9858 * least the type and uint value are modified.
9859 */
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9860#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9861 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]9862
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9863#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]9864 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]9865
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9866
9867/* 1. Check on METHOD
9868 * We use the pre-parsed method if it is known, and store its number as an
9869 * integer. If it is unknown, we use the pointer and the length.
9870 */
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9871static int pat_parse_meth(const char *text, struct pattern *pattern, int mflags, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9872{
9873 int len, meth;
9874
Thierry FOURNIER580c32c2014-01-24 10:58:12 +0100[diff] [blame]9875 len = strlen(text);
9876 meth = find_http_meth(text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9877
9878 pattern->val.i = meth;
9879 if (meth == HTTP_METH_OTHER) {
Willy Tarreau912c1192014-08-29 15:15:50 +0200[diff] [blame]9880 pattern->ptr.str = (char *)text;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9881 pattern->len = len;
9882 }
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9883 else {
9884 pattern->ptr.str = NULL;
9885 pattern->len = 0;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9886 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9887 return 1;
9888}
9889
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9890/* This function fetches the method of current HTTP request and stores
9891 * it in the global pattern struct as a chunk. There are two possibilities :
9892 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
9893 * in <len> and <ptr> is NULL ;
9894 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
9895 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9896 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9897 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9898static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9899smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9900 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9901{
9902 int meth;
9903 struct http_txn *txn = l7;
9904
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9905 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9906
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9907 meth = txn->meth;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9908 smp->type = SMP_T_METH;
9909 smp->data.meth.meth = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9910 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9911 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
9912 /* ensure the indexes are not affected */
9913 return 0;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9914 smp->flags |= SMP_F_CONST;
Thierry FOURNIERd4373142013-12-17 01:10:10 +0100[diff] [blame]9915 smp->data.meth.str.len = txn->req.sl.rq.m_l;
9916 smp->data.meth.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9917 }
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9918 smp->flags |= SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9919 return 1;
9920}
9921
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]9922/* See above how the method is stored in the global pattern */
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9923static struct pattern *pat_match_meth(struct sample *smp, struct pattern_expr *expr, int fill)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9924{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9925 int icase;
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9926 struct pattern_list *lst;
9927 struct pattern *pattern;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9928
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9929 list_for_each_entry(lst, &expr->patterns, list) {
9930 pattern = &lst->pat;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9931
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9932 /* well-known method */
9933 if (pattern->val.i != HTTP_METH_OTHER) {
9934 if (smp->data.meth.meth == pattern->val.i)
9935 return pattern;
9936 else
9937 continue;
9938 }
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]9939
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9940 /* Other method, we must compare the strings */
9941 if (pattern->len != smp->data.meth.str.len)
9942 continue;
9943
Thierry FOURNIERe47e4e22014-04-28 11:18:57 +0200[diff] [blame]9944 icase = expr->mflags & PAT_MF_IGNORE_CASE;
Willy Tarreau4de2a942014-08-28 20:42:57 +0200[diff] [blame]9945 if ((icase && strncasecmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0) ||
9946 (!icase && strncmp(pattern->ptr.str, smp->data.meth.str.str, smp->data.meth.str.len) == 0))
Thierry FOURNIER5338eea2013-12-16 14:22:13 +0100[diff] [blame]9947 return pattern;
9948 }
9949 return NULL;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9950}
9951
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9952static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9953smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9954 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9955{
9956 struct http_txn *txn = l7;
9957 char *ptr;
9958 int len;
9959
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9960 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9961
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9962 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9963 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9964
9965 while ((len-- > 0) && (*ptr++ != '/'));
9966 if (len <= 0)
9967 return 0;
9968
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9969 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9970 smp->data.str.str = ptr;
9971 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9972
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9973 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9974 return 1;
9975}
9976
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9977static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9978smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9979 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9980{
9981 struct http_txn *txn = l7;
9982 char *ptr;
9983 int len;
9984
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9985 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9986
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9987 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9988 return 0;
9989
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9990 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9991 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9992
9993 while ((len-- > 0) && (*ptr++ != '/'));
9994 if (len <= 0)
9995 return 0;
9996
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]9997 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9998 smp->data.str.str = ptr;
9999 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10000
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10001 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10002 return 1;
10003}
10004
10005/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10006static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10007smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10008 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10009{
10010 struct http_txn *txn = l7;
10011 char *ptr;
10012 int len;
10013
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10014 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10015
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]10016 if (txn->rsp.msg_state < HTTP_MSG_BODY)
10017 return 0;
10018
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10019 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10020 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10021
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10022 smp->type = SMP_T_UINT;
10023 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10024 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10025 return 1;
10026}
10027
10028/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]10029static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10030smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10031 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10032{
10033 struct http_txn *txn = l7;
10034
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10035 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10036
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10037 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10038 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10039 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10040 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10041 return 1;
10042}
10043
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10044static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10045smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10046 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10047{
10048 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10049 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10050
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10051 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10052
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10053 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]10054 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]10055 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10056
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10057 smp->type = SMP_T_IPV4;
10058 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10059 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10060 return 1;
10061}
10062
10063static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10064smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10065 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10066{
10067 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10068 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10069
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10070 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10071
Thierry FOURNIER9f95e402014-03-21 14:51:46 +0100[diff] [blame]10072 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]10073 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
10074 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10075
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]10076 smp->type = SMP_T_UINT;
10077 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]10078 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]10079 return 1;
10080}
10081
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10082/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10083 * Accepts an optional argument of type string containing the header field name,
10084 * and an optional argument of type signed or unsigned integer to request an
10085 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10086 * headers are considered from the first one. It does not stop on commas and
10087 * returns full lines instead (useful for User-Agent or Date for example).
10088 */
10089static int
10090smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10091 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10092{
10093 struct http_txn *txn = l7;
10094 struct hdr_idx *idx = &txn->hdr_idx;
10095 struct hdr_ctx *ctx = smp->ctx.a[0];
10096 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
10097 int occ = 0;
10098 const char *name_str = NULL;
10099 int name_len = 0;
10100
10101 if (!ctx) {
10102 /* first call */
10103 ctx = &static_hdr_ctx;
10104 ctx->idx = 0;
10105 smp->ctx.a[0] = ctx;
10106 }
10107
10108 if (args) {
10109 if (args[0].type != ARGT_STR)
10110 return 0;
10111 name_str = args[0].data.str.str;
10112 name_len = args[0].data.str.len;
10113
10114 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10115 occ = args[1].data.uint;
10116 }
10117
10118 CHECK_HTTP_MESSAGE_FIRST();
10119
10120 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
10121 /* search for header from the beginning */
10122 ctx->idx = 0;
10123
10124 if (!occ && !(opt & SMP_OPT_ITERATE))
10125 /* no explicit occurrence and single fetch => last header by default */
10126 occ = -1;
10127
10128 if (!occ)
10129 /* prepare to report multiple occurrences for ACL fetches */
10130 smp->flags |= SMP_F_NOT_LAST;
10131
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10132 smp->type = SMP_T_STR;
10133 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10134 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
10135 return 1;
10136
10137 smp->flags &= ~SMP_F_NOT_LAST;
10138 return 0;
10139}
10140
10141/* 6. Check on HTTP header count. The number of occurrences is returned.
10142 * Accepts exactly 1 argument of type string. It does not stop on commas and
10143 * returns full lines instead (useful for User-Agent or Date for example).
10144 */
10145static int
10146smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10147 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10148{
10149 struct http_txn *txn = l7;
10150 struct hdr_idx *idx = &txn->hdr_idx;
10151 struct hdr_ctx ctx;
10152 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
10153 int cnt;
10154
10155 if (!args || args->type != ARGT_STR)
10156 return 0;
10157
10158 CHECK_HTTP_MESSAGE_FIRST();
10159
10160 ctx.idx = 0;
10161 cnt = 0;
10162 while (http_find_full_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
10163 cnt++;
10164
10165 smp->type = SMP_T_UINT;
10166 smp->data.uint = cnt;
10167 smp->flags = SMP_F_VOL_HDR;
10168 return 1;
10169}
10170
10171/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
10172 * Accepts an optional argument of type string containing the header field name,
10173 * and an optional argument of type signed or unsigned integer to request an
10174 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10175 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10176 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10177static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10178smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10179 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10180{
10181 struct http_txn *txn = l7;
10182 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10183 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10184 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]10185 int occ = 0;
10186 const char *name_str = NULL;
10187 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10188
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10189 if (!ctx) {
10190 /* first call */
10191 ctx = &static_hdr_ctx;
10192 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]10193 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10194 }
10195
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10196 if (args) {
10197 if (args[0].type != ARGT_STR)
10198 return 0;
10199 name_str = args[0].data.str.str;
10200 name_len = args[0].data.str.len;
10201
10202 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
10203 occ = args[1].data.uint;
10204 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10205
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10206 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10207
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10208 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10209 /* search for header from the beginning */
10210 ctx->idx = 0;
10211
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10212 if (!occ && !(opt & SMP_OPT_ITERATE))
10213 /* no explicit occurrence and single fetch => last header by default */
10214 occ = -1;
10215
10216 if (!occ)
10217 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10218 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]10219
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10220 smp->type = SMP_T_STR;
10221 smp->flags |= SMP_F_VOL_HDR | SMP_F_CONST;
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10222 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]10223 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10224
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10225 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10226 return 0;
10227}
10228
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10229/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10230 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10231 */
10232static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10233smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10234 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10235{
10236 struct http_txn *txn = l7;
10237 struct hdr_idx *idx = &txn->hdr_idx;
10238 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10239 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]10240 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10241
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10242 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10243 return 0;
10244
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10245 CHECK_HTTP_MESSAGE_FIRST();
10246
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10247 ctx.idx = 0;
10248 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10249 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]10250 cnt++;
10251
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10252 smp->type = SMP_T_UINT;
10253 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10254 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10255 return 1;
10256}
10257
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10258/* Fetch an HTTP header's integer value. The integer value is returned. It
10259 * takes a mandatory argument of type string and an optional one of type int
10260 * to designate a specific occurrence. It returns an unsigned integer, which
10261 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10262 */
10263static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10264smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10265 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10266{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10267 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10268
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10269 if (ret > 0) {
10270 smp->type = SMP_T_UINT;
10271 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10272 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10273
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10274 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10275}
10276
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10277/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
10278 * and an optional one of type int to designate a specific occurrence.
10279 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10280 */
10281static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10282smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10283 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10284{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10285 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10286
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10287 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10288 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
10289 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10290 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10291 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10292 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]10293 if (smp->data.str.len < temp->size - 1) {
10294 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
10295 temp->str[smp->data.str.len] = '\0';
10296 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
10297 smp->type = SMP_T_IPV6;
10298 break;
10299 }
10300 }
10301 }
10302
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10303 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10304 if (!(smp->flags & SMP_F_NOT_LAST))
10305 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10306 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]10307 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]10308}
10309
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10310/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
10311 * the first '/' after the possible hostname, and ends before the possible '?'.
10312 */
10313static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]10314smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10315 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10316{
10317 struct http_txn *txn = l7;
10318 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]10319
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10320 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]10321
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10322 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]10323 ptr = http_get_path(txn);
10324 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10325 return 0;
10326
10327 /* OK, we got the '/' ! */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10328 smp->type = SMP_T_STR;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10329 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10330
10331 while (ptr < end && *ptr != '?')
10332 ptr++;
10333
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10334 smp->data.str.len = ptr - smp->data.str.str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10335 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]10336 return 1;
10337}
10338
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10339/* This produces a concatenation of the first occurrence of the Host header
10340 * followed by the path component if it begins with a slash ('/'). This means
10341 * that '*' will not be added, resulting in exactly the first Host entry.
10342 * If no Host header is found, then the path is returned as-is. The returned
10343 * 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]10344 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10345 */
10346static int
10347smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10348 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10349{
10350 struct http_txn *txn = l7;
10351 char *ptr, *end, *beg;
10352 struct hdr_ctx ctx;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10353 struct chunk *temp;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10354
10355 CHECK_HTTP_MESSAGE_FIRST();
10356
10357 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10358 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]10359 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10360
10361 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10362 temp = get_trash_chunk();
10363 memcpy(temp->str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10364 smp->type = SMP_T_STR;
Willy Tarreau3caf2af2014-06-24 17:27:02 +0200[diff] [blame]10365 smp->data.str.str = temp->str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10366 smp->data.str.len = ctx.vlen;
10367
10368 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10369 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]10370 beg = http_get_path(txn);
10371 if (!beg)
10372 beg = end;
10373
10374 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10375
10376 if (beg < ptr && *beg == '/') {
10377 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
10378 smp->data.str.len += ptr - beg;
10379 }
10380
10381 smp->flags = SMP_F_VOL_1ST;
10382 return 1;
10383}
10384
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10385/* This produces a 32-bit hash of the concatenation of the first occurrence of
10386 * the Host header followed by the path component if it begins with a slash ('/').
10387 * This means that '*' will not be added, resulting in exactly the first Host
10388 * 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]10389 * is hashed using the path hash followed by a full avalanche hash and provides a
10390 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10391 * high-traffic sites without having to store whole paths.
10392 */
Thierry FOURNIER055b9d52014-07-15 16:11:07 +0200[diff] [blame]10393int
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10394smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10395 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]10396{
10397 struct http_txn *txn = l7;
10398 struct hdr_ctx ctx;
10399 unsigned int hash = 0;
10400 char *ptr, *beg, *end;
10401 int len;
10402
10403 CHECK_HTTP_MESSAGE_FIRST();
10404
10405 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10406 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]10407 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10408 ptr = ctx.line + ctx.val;
10409 len = ctx.vlen;
10410 while (len--)
10411 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10412 }
10413
10414 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]10415 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]10416 beg = http_get_path(txn);
10417 if (!beg)
10418 beg = end;
10419
10420 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
10421
10422 if (beg < ptr && *beg == '/') {
10423 while (beg < ptr)
10424 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10425 }
10426 hash = full_hash(hash);
10427
10428 smp->type = SMP_T_UINT;
10429 smp->data.uint = hash;
10430 smp->flags = SMP_F_VOL_1ST;
10431 return 1;
10432}
10433
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10434/* 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]10435 * path as returned by smp_fetch_base32(). The idea is to have per-source and
10436 * per-path counters. The result is a binary block from 8 to 20 bytes depending
10437 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10438 * that in environments where IPv6 is insignificant, truncating the output to
10439 * 8 bytes would still work.
10440 */
10441static int
10442smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10443 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10444{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10445 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10446 struct connection *cli_conn = objt_conn(l4->si[0].end);
10447
10448 if (!cli_conn)
10449 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10450
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10451 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10452 return 0;
10453
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]10454 temp = get_trash_chunk();
Willy Tarreau5ad6e1d2014-07-15 21:34:06 +0200[diff] [blame]10455 *(unsigned int *)temp->str = htonl(smp->data.uint);
10456 temp->len += sizeof(unsigned int);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10457
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10458 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]10459 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10460 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]10461 temp->len += 4;
10462 break;
10463 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10464 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]10465 temp->len += 16;
10466 break;
10467 default:
10468 return 0;
10469 }
10470
10471 smp->data.str = *temp;
10472 smp->type = SMP_T_BIN;
10473 return 1;
10474}
10475
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]10476/* Extracts the query string, which comes after the question mark '?'. If no
10477 * question mark is found, nothing is returned. Otherwise it returns a sample
10478 * of type string carrying the whole query string.
10479 */
10480static int
10481smp_fetch_query(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10482 const struct arg *args, struct sample *smp, const char *kw)
10483{
10484 struct http_txn *txn = l7;
10485 char *ptr, *end;
10486
10487 CHECK_HTTP_MESSAGE_FIRST();
10488
10489 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
10490 end = ptr + txn->req.sl.rq.u_l;
10491
10492 /* look up the '?' */
10493 do {
10494 if (ptr == end)
10495 return 0;
10496 } while (*ptr++ != '?');
10497
10498 smp->type = SMP_T_STR;
10499 smp->data.str.str = ptr;
10500 smp->data.str.len = end - ptr;
10501 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
10502 return 1;
10503}
10504
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10505static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10506smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10507 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10508{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10509 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
10510 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
10511 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10512
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10513 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10514
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10515 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10516 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]10517 return 1;
10518}
10519
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10520/* return a valid test if the current request is the first one on the connection */
10521static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10522smp_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]10523 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10524{
10525 if (!s)
10526 return 0;
10527
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10528 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]10529 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]10530 return 1;
10531}
10532
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10533/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10534static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10535smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10536 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10537{
10538
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10539 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10540 return 0;
10541
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10542 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10543
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]10544 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]10545 return 0;
10546
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10547 smp->type = SMP_T_BOOL;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10548 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]10549 return 1;
10550}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10551
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10552/* Accepts exactly 1 argument of type userlist */
10553static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10554smp_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]10555 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10556{
10557
10558 if (!args || args->type != ARGT_USR)
10559 return 0;
10560
10561 CHECK_HTTP_MESSAGE_FIRST();
10562
10563 if (!get_http_auth(l4))
10564 return 0;
10565
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10566 /* if the user does not belong to the userlist or has a wrong password,
10567 * report that it unconditionally does not match. Otherwise we return
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10568 * a string containing the username.
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10569 */
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10570 if (!check_user(args->data.usr, l4->txn.auth.user, l4->txn.auth.pass))
10571 return 0;
10572
10573 /* pat_match_auth() will need the user list */
10574 smp->ctx.a[0] = args->data.usr;
10575
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10576 smp->type = SMP_T_STR;
10577 smp->flags = SMP_F_CONST;
Thierry FOURNIER9eec0a62014-01-22 18:38:02 +0100[diff] [blame]10578 smp->data.str.str = l4->txn.auth.user;
10579 smp->data.str.len = strlen(l4->txn.auth.user);
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]10580
10581 return 1;
10582}
10583
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10584/* Try to find the next occurrence of a cookie name in a cookie header value.
10585 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
10586 * the cookie value is returned into *value and *value_l, and the function
10587 * returns a pointer to the next pointer to search from if the value was found.
10588 * Otherwise if the cookie was not found, NULL is returned and neither value
10589 * nor value_l are touched. The input <hdr> string should first point to the
10590 * header's value, and the <hdr_end> pointer must point to the first character
10591 * not part of the value. <list> must be non-zero if value may represent a list
10592 * of values (cookie headers). This makes it faster to abort parsing when no
10593 * list is expected.
10594 */
10595static char *
10596extract_cookie_value(char *hdr, const char *hdr_end,
10597 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]10598 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10599{
10600 char *equal, *att_end, *att_beg, *val_beg, *val_end;
10601 char *next;
10602
10603 /* we search at least a cookie name followed by an equal, and more
10604 * generally something like this :
10605 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
10606 */
10607 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
10608 /* Iterate through all cookies on this line */
10609
10610 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
10611 att_beg++;
10612
10613 /* find att_end : this is the first character after the last non
10614 * space before the equal. It may be equal to hdr_end.
10615 */
10616 equal = att_end = att_beg;
10617
10618 while (equal < hdr_end) {
10619 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
10620 break;
10621 if (http_is_spht[(unsigned char)*equal++])
10622 continue;
10623 att_end = equal;
10624 }
10625
10626 /* here, <equal> points to '=', a delimitor or the end. <att_end>
10627 * is between <att_beg> and <equal>, both may be identical.
10628 */
10629
10630 /* look for end of cookie if there is an equal sign */
10631 if (equal < hdr_end && *equal == '=') {
10632 /* look for the beginning of the value */
10633 val_beg = equal + 1;
10634 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
10635 val_beg++;
10636
10637 /* find the end of the value, respecting quotes */
10638 next = find_cookie_value_end(val_beg, hdr_end);
10639
10640 /* make val_end point to the first white space or delimitor after the value */
10641 val_end = next;
10642 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
10643 val_end--;
10644 } else {
10645 val_beg = val_end = next = equal;
10646 }
10647
10648 /* We have nothing to do with attributes beginning with '$'. However,
10649 * they will automatically be removed if a header before them is removed,
10650 * since they're supposed to be linked together.
10651 */
10652 if (*att_beg == '$')
10653 continue;
10654
10655 /* Ignore cookies with no equal sign */
10656 if (equal == next)
10657 continue;
10658
10659 /* Now we have the cookie name between att_beg and att_end, and
10660 * its value between val_beg and val_end.
10661 */
10662
10663 if (att_end - att_beg == cookie_name_l &&
10664 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
10665 /* let's return this value and indicate where to go on from */
10666 *value = val_beg;
10667 *value_l = val_end - val_beg;
10668 return next + 1;
10669 }
10670
10671 /* Set-Cookie headers only have the name in the first attr=value part */
10672 if (!list)
10673 break;
10674 }
10675
10676 return NULL;
10677}
10678
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10679/* Fetch a captured HTTP request header. The index is the position of
10680 * the "capture" option in the configuration file
10681 */
10682static int
10683smp_fetch_capture_header_req(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10684 const struct arg *args, struct sample *smp, const char *kw)
10685{
10686 struct proxy *fe = l4->fe;
10687 struct http_txn *txn = l7;
10688 int idx;
10689
10690 if (!args || args->type != ARGT_UINT)
10691 return 0;
10692
10693 idx = args->data.uint;
10694
10695 if (idx > (fe->nb_req_cap - 1) || txn->req.cap == NULL || txn->req.cap[idx] == NULL)
10696 return 0;
10697
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10698 smp->type = SMP_T_STR;
10699 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10700 smp->data.str.str = txn->req.cap[idx];
10701 smp->data.str.len = strlen(txn->req.cap[idx]);
10702
10703 return 1;
10704}
10705
10706/* Fetch a captured HTTP response header. The index is the position of
10707 * the "capture" option in the configuration file
10708 */
10709static int
10710smp_fetch_capture_header_res(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10711 const struct arg *args, struct sample *smp, const char *kw)
10712{
10713 struct proxy *fe = l4->fe;
10714 struct http_txn *txn = l7;
10715 int idx;
10716
10717 if (!args || args->type != ARGT_UINT)
10718 return 0;
10719
10720 idx = args->data.uint;
10721
10722 if (idx > (fe->nb_rsp_cap - 1) || txn->rsp.cap == NULL || txn->rsp.cap[idx] == NULL)
10723 return 0;
10724
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10725 smp->type = SMP_T_STR;
10726 smp->flags |= SMP_F_CONST;
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10727 smp->data.str.str = txn->rsp.cap[idx];
10728 smp->data.str.len = strlen(txn->rsp.cap[idx]);
10729
10730 return 1;
10731}
10732
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10733/* Extracts the METHOD in the HTTP request, the txn->uri should be filled before the call */
10734static int
10735smp_fetch_capture_req_method(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10736 const struct arg *args, struct sample *smp, const char *kw)
10737{
10738 struct chunk *temp;
10739 struct http_txn *txn = l7;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10740 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10741
10742 if (!txn->uri)
10743 return 0;
10744
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10745 ptr = txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10746
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10747 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10748 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10749
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10750 temp = get_trash_chunk();
10751 temp->str = txn->uri;
10752 temp->len = ptr - txn->uri;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10753 smp->data.str = *temp;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10754 smp->type = SMP_T_STR;
10755 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10756
10757 return 1;
10758
10759}
10760
10761/* Extracts the path in the HTTP request, the txn->uri should be filled before the call */
10762static int
10763smp_fetch_capture_req_uri(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10764 const struct arg *args, struct sample *smp, const char *kw)
10765{
10766 struct chunk *temp;
10767 struct http_txn *txn = l7;
10768 char *ptr;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10769
10770 if (!txn->uri)
10771 return 0;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10772
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10773 ptr = txn->uri;
10774
10775 while (*ptr != ' ' && *ptr != '\0') /* find first space */
10776 ptr++;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10777
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10778 if (!*ptr)
10779 return 0;
10780
10781 ptr++; /* skip the space */
10782
10783 temp = get_trash_chunk();
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10784 ptr = temp->str = http_get_path_from_string(ptr);
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10785 if (!ptr)
10786 return 0;
10787 while (*ptr != ' ' && *ptr != '\0') /* find space after URI */
10788 ptr++;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10789
10790 smp->data.str = *temp;
William Lallemand96a77852014-02-05 00:30:02 +0100[diff] [blame]10791 smp->data.str.len = ptr - temp->str;
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10792 smp->type = SMP_T_STR;
10793 smp->flags = SMP_F_CONST;
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10794
10795 return 1;
10796}
10797
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]10798/* Retrieves the HTTP version from the request (either 1.0 or 1.1) and emits it
10799 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10800 */
10801static int
10802smp_fetch_capture_req_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10803 const struct arg *args, struct sample *smp, const char *kw)
10804{
10805 struct http_txn *txn = l7;
10806
10807 if (txn->req.msg_state < HTTP_MSG_HDR_FIRST)
10808 return 0;
10809
10810 if (txn->req.flags & HTTP_MSGF_VER_11)
10811 smp->data.str.str = "HTTP/1.1";
10812 else
10813 smp->data.str.str = "HTTP/1.0";
10814
10815 smp->data.str.len = 8;
10816 smp->type = SMP_T_STR;
10817 smp->flags = SMP_F_CONST;
10818 return 1;
10819
10820}
10821
10822/* Retrieves the HTTP version from the response (either 1.0 or 1.1) and emits it
10823 * as a string (either "HTTP/1.0" or "HTTP/1.1").
10824 */
10825static int
10826smp_fetch_capture_res_ver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
10827 const struct arg *args, struct sample *smp, const char *kw)
10828{
10829 struct http_txn *txn = l7;
10830
10831 if (txn->rsp.msg_state < HTTP_MSG_HDR_FIRST)
10832 return 0;
10833
10834 if (txn->rsp.flags & HTTP_MSGF_VER_11)
10835 smp->data.str.str = "HTTP/1.1";
10836 else
10837 smp->data.str.str = "HTTP/1.0";
10838
10839 smp->data.str.len = 8;
10840 smp->type = SMP_T_STR;
10841 smp->flags = SMP_F_CONST;
10842 return 1;
10843
10844}
10845
William Lallemand65ad6e12014-01-31 15:08:02 +0100[diff] [blame]10846
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10847/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10848 * 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]10849 * 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]10850 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10851 * 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]10852 * Accepts exactly 1 argument of type string. If the input options indicate
10853 * that no iterating is desired, then only last value is fetched if any.
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10854 * The returned sample is of type CSTR. Can be used to parse cookies in other
10855 * files.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10856 */
William Lallemand07c8b242014-05-02 17:11:07 +0200[diff] [blame]10857int smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10858 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10859{
10860 struct http_txn *txn = l7;
10861 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10862 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10863 const struct http_msg *msg;
10864 const char *hdr_name;
10865 int hdr_name_len;
10866 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10867 int occ = 0;
10868 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10869
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10870 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10871 return 0;
10872
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]10873 if (!ctx) {
10874 /* first call */
10875 ctx = &static_hdr_ctx;
10876 ctx->idx = 0;
10877 smp->ctx.a[2] = ctx;
10878 }
10879
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10880 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10881
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10882 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10883 msg = &txn->req;
10884 hdr_name = "Cookie";
10885 hdr_name_len = 6;
10886 } else {
10887 msg = &txn->rsp;
10888 hdr_name = "Set-Cookie";
10889 hdr_name_len = 10;
10890 }
10891
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10892 if (!occ && !(opt & SMP_OPT_ITERATE))
10893 /* no explicit occurrence and single fetch => last cookie by default */
10894 occ = -1;
10895
10896 /* OK so basically here, either we want only one value and it's the
10897 * last one, or we want to iterate over all of them and we fetch the
10898 * next one.
10899 */
10900
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10901 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10902 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10903 /* search for the header from the beginning, we must first initialize
10904 * the search parameters.
10905 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10906 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10907 ctx->idx = 0;
10908 }
10909
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10910 smp->flags |= SMP_F_VOL_HDR;
10911
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10912 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10913 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
10914 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10915 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
10916 goto out;
10917
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10918 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10919 continue;
10920
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10921 smp->ctx.a[0] = ctx->line + ctx->val;
10922 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10923 }
10924
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]10925 smp->type = SMP_T_STR;
10926 smp->flags |= SMP_F_CONST;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10927 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]10928 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10929 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]10930 &smp->data.str.str,
10931 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10932 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10933 found = 1;
10934 if (occ >= 0) {
10935 /* one value was returned into smp->data.str.{str,len} */
10936 smp->flags |= SMP_F_NOT_LAST;
10937 return 1;
10938 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10939 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10940 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10941 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10942 /* all cookie headers and values were scanned. If we're looking for the
10943 * last occurrence, we may return it now.
10944 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10945 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]10946 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]10947 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10948}
10949
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10950/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10951 * 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]10952 * multiple cookies may be parsed on the same line. The returned sample is of
10953 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10954 */
10955static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10956smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10957 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10958{
10959 struct http_txn *txn = l7;
10960 struct hdr_idx *idx = &txn->hdr_idx;
10961 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10962 const struct http_msg *msg;
10963 const char *hdr_name;
10964 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10965 int cnt;
10966 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10967 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10968
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10969 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]10970 return 0;
10971
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10972 CHECK_HTTP_MESSAGE_FIRST();
10973
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]10974 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]10975 msg = &txn->req;
10976 hdr_name = "Cookie";
10977 hdr_name_len = 6;
10978 } else {
10979 msg = &txn->rsp;
10980 hdr_name = "Set-Cookie";
10981 hdr_name_len = 10;
10982 }
10983
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10984 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]10985 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10986 ctx.idx = 0;
10987 cnt = 0;
10988
10989 while (1) {
10990 /* Note: val_beg == NULL every time we need to fetch a new header */
10991 if (!val_beg) {
10992 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
10993 break;
10994
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]10995 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]10996 continue;
10997
10998 val_beg = ctx.line + ctx.val;
10999 val_end = val_beg + ctx.vlen;
11000 }
11001
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11002 smp->type = SMP_T_STR;
11003 smp->flags |= SMP_F_CONST;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11004 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]11005 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]11006 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11007 &smp->data.str.str,
11008 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11009 cnt++;
11010 }
11011 }
11012
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]11013 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]11014 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]11015 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]11016 return 1;
11017}
11018
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11019/* Fetch an cookie's integer value. The integer value is returned. It
11020 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
11021 */
11022static int
11023smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11024 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11025{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11026 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]11027
11028 if (ret > 0) {
11029 smp->type = SMP_T_UINT;
11030 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11031 }
11032
11033 return ret;
11034}
11035
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11036/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11037/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11038/************************************************************************/
11039
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11040/*
11041 * Given a path string and its length, find the position of beginning of the
11042 * query string. Returns NULL if no query string is found in the path.
11043 *
11044 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
11045 *
11046 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
11047 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11048static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11049{
11050 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]11051
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11052 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11053 return p ? p + 1 : NULL;
11054}
11055
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11056static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11057{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11058 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11059}
11060
11061/*
11062 * Given a url parameter, find the starting position of the first occurence,
11063 * or NULL if the parameter is not found.
11064 *
11065 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
11066 * the function will return query_string+8.
11067 */
11068static char*
11069find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11070 char* url_param_name, size_t url_param_name_l,
11071 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11072{
11073 char *pos, *last;
11074
11075 pos = query_string;
11076 last = query_string + query_string_l - url_param_name_l - 1;
11077
11078 while (pos <= last) {
11079 if (pos[url_param_name_l] == '=') {
11080 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
11081 return pos;
11082 pos += url_param_name_l + 1;
11083 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11084 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11085 pos++;
11086 pos++;
11087 }
11088 return NULL;
11089}
11090
11091/*
11092 * Given a url parameter name, returns its value and size into *value and
11093 * *value_l respectively, and returns non-zero. If the parameter is not found,
11094 * zero is returned and value/value_l are not touched.
11095 */
11096static int
11097find_url_param_value(char* path, size_t path_l,
11098 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11099 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11100{
11101 char *query_string, *qs_end;
11102 char *arg_start;
11103 char *value_start, *value_end;
11104
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11105 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11106 if (!query_string)
11107 return 0;
11108
11109 qs_end = path + path_l;
11110 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11111 url_param_name, url_param_name_l,
11112 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11113 if (!arg_start)
11114 return 0;
11115
11116 value_start = arg_start + url_param_name_l + 1;
11117 value_end = value_start;
11118
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11119 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11120 value_end++;
11121
11122 *value = value_start;
11123 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]11124 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11125}
11126
11127static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11128smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11129 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11130{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11131 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11132 struct http_txn *txn = l7;
11133 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11134
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11135 if (!args || args[0].type != ARGT_STR ||
11136 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11137 return 0;
11138
11139 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11140
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]11141 if (args[1].type)
11142 delim = *args[1].data.str.str;
11143
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]11144 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]11145 args->data.str.str, args->data.str.len,
11146 &smp->data.str.str, &smp->data.str.len,
11147 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11148 return 0;
11149
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11150 smp->type = SMP_T_STR;
11151 smp->flags = SMP_F_VOL_1ST | SMP_F_CONST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]11152 return 1;
11153}
11154
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11155/* Return the signed integer value for the specified url parameter (see url_param
11156 * above).
11157 */
11158static int
11159smp_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]11160 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11161{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]11162 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]11163
11164 if (ret > 0) {
11165 smp->type = SMP_T_UINT;
11166 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
11167 }
11168
11169 return ret;
11170}
11171
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11172/* This produces a 32-bit hash of the concatenation of the first occurrence of
11173 * the Host header followed by the path component if it begins with a slash ('/').
11174 * This means that '*' will not be added, resulting in exactly the first Host
11175 * entry. If no Host header is found, then the path is used. The resulting value
11176 * is hashed using the url hash followed by a full avalanche hash and provides a
11177 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
11178 * high-traffic sites without having to store whole paths.
11179 * this differs from the base32 functions in that it includes the url parameters
11180 * as well as the path
11181 */
11182static int
11183smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11184 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11185{
11186 struct http_txn *txn = l7;
11187 struct hdr_ctx ctx;
11188 unsigned int hash = 0;
11189 char *ptr, *beg, *end;
11190 int len;
11191
11192 CHECK_HTTP_MESSAGE_FIRST();
11193
11194 ctx.idx = 0;
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11195 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]11196 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
11197 ptr = ctx.line + ctx.val;
11198 len = ctx.vlen;
11199 while (len--)
11200 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
11201 }
11202
11203 /* now retrieve the path */
Willy Tarreau877e78d2013-04-07 18:48:08 +0200[diff] [blame]11204 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]11205 beg = http_get_path(txn);
11206 if (!beg)
11207 beg = end;
11208
11209 for (ptr = beg; ptr < end ; ptr++);
11210
11211 if (beg < ptr && *beg == '/') {
11212 while (beg < ptr)
11213 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
11214 }
11215 hash = full_hash(hash);
11216
11217 smp->type = SMP_T_UINT;
11218 smp->data.uint = hash;
11219 smp->flags = SMP_F_VOL_1ST;
11220 return 1;
11221}
11222
11223/* This concatenates the source address with the 32-bit hash of the Host and
11224 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
11225 * per-url counters. The result is a binary block from 8 to 20 bytes depending
11226 * on the source address length. The URL hash is stored before the address so
11227 * that in environments where IPv6 is insignificant, truncating the output to
11228 * 8 bytes would still work.
11229 */
11230static int
11231smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11232 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11233{
11234 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11235 struct connection *cli_conn = objt_conn(l4->si[0].end);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11236
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]11237 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11238 return 0;
11239
11240 temp = get_trash_chunk();
11241 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
11242 temp->len += sizeof(smp->data.uint);
11243
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11244 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11245 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11246 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]11247 temp->len += 4;
11248 break;
11249 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]11250 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]11251 temp->len += 16;
11252 break;
11253 default:
11254 return 0;
11255 }
11256
11257 smp->data.str = *temp;
11258 smp->type = SMP_T_BIN;
11259 return 1;
11260}
11261
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11262/* This function is used to validate the arguments passed to any "hdr" fetch
11263 * keyword. These keywords support an optional positive or negative occurrence
11264 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
11265 * is assumed that the types are already the correct ones. Returns 0 on error,
11266 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
11267 * error message in case of error, that the caller is responsible for freeing.
11268 * The initial location must either be freeable or NULL.
11269 */
11270static int val_hdr(struct arg *arg, char **err_msg)
11271{
11272 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]11273 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]11274 return 0;
11275 }
11276 return 1;
11277}
11278
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11279/* takes an UINT value on input supposed to represent the time since EPOCH,
11280 * adds an optional offset found in args[0] and emits a string representing
11281 * the date in RFC-1123/5322 format.
11282 */
11283static int sample_conv_http_date(const struct arg *args, struct sample *smp)
11284{
11285 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
11286 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
11287 struct chunk *temp;
11288 struct tm *tm;
11289 time_t curr_date = smp->data.uint;
11290
11291 /* add offset */
11292 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
11293 curr_date += args[0].data.sint;
11294
11295 tm = gmtime(&curr_date);
11296
11297 temp = get_trash_chunk();
11298 temp->len = snprintf(temp->str, temp->size - temp->len,
11299 "%s, %02d %s %04d %02d:%02d:%02d GMT",
11300 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
11301 tm->tm_hour, tm->tm_min, tm->tm_sec);
11302
11303 smp->data.str = *temp;
11304 smp->type = SMP_T_STR;
11305 return 1;
11306}
11307
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11308/* Match language range with language tag. RFC2616 14.4:
11309 *
11310 * A language-range matches a language-tag if it exactly equals
11311 * the tag, or if it exactly equals a prefix of the tag such
11312 * that the first tag character following the prefix is "-".
11313 *
11314 * Return 1 if the strings match, else return 0.
11315 */
11316static inline int language_range_match(const char *range, int range_len,
11317 const char *tag, int tag_len)
11318{
11319 const char *end = range + range_len;
11320 const char *tend = tag + tag_len;
11321 while (range < end) {
11322 if (*range == '-' && tag == tend)
11323 return 1;
11324 if (*range != *tag || tag == tend)
11325 return 0;
11326 range++;
11327 tag++;
11328 }
11329 /* Return true only if the last char of the tag is matched. */
11330 return tag == tend;
11331}
11332
11333/* Arguments: The list of expected value, the number of parts returned and the separator */
11334static int sample_conv_q_prefered(const struct arg *args, struct sample *smp)
11335{
11336 const char *al = smp->data.str.str;
11337 const char *end = al + smp->data.str.len;
11338 const char *token;
11339 int toklen;
11340 int qvalue;
11341 const char *str;
11342 const char *w;
11343 int best_q = 0;
11344
11345 /* Set the constant to the sample, because the output of the
11346 * function will be peek in the constant configuration string.
11347 */
11348 smp->flags |= SMP_F_CONST;
11349 smp->data.str.size = 0;
11350 smp->data.str.str = "";
11351 smp->data.str.len = 0;
11352
11353 /* Parse the accept language */
11354 while (1) {
11355
11356 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11357 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11358 al++;
11359 if (al >= end)
11360 break;
11361
11362 /* Start of the fisrt word. */
11363 token = al;
11364
11365 /* Look for separator: isspace(), ',' or ';'. Next value if 0 length word. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11366 while (al < end && *al != ';' && *al != ',' && !isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11367 al++;
11368 if (al == token)
11369 goto expect_comma;
11370
11371 /* Length of the token. */
11372 toklen = al - token;
11373 qvalue = 1000;
11374
11375 /* Check if the token exists in the list. If the token not exists,
11376 * jump to the next token.
11377 */
11378 str = args[0].data.str.str;
11379 w = str;
11380 while (1) {
11381 if (*str == ';' || *str == '\0') {
11382 if (language_range_match(token, toklen, w, str-w))
11383 goto look_for_q;
11384 if (*str == '\0')
11385 goto expect_comma;
11386 w = str + 1;
11387 }
11388 str++;
11389 }
11390 goto expect_comma;
11391
11392look_for_q:
11393
11394 /* Jump spaces, quit if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11395 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11396 al++;
11397 if (al >= end)
11398 goto process_value;
11399
11400 /* If ',' is found, process the result */
11401 if (*al == ',')
11402 goto process_value;
11403
11404 /* If the character is different from ';', look
11405 * for the end of the header part in best effort.
11406 */
11407 if (*al != ';')
11408 goto expect_comma;
11409
11410 /* Assumes that the char is ';', now expect "q=". */
11411 al++;
11412
11413 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11414 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11415 al++;
11416 if (al >= end)
11417 goto process_value;
11418
11419 /* Expect 'q'. If no 'q', continue in best effort */
11420 if (*al != 'q')
11421 goto process_value;
11422 al++;
11423
11424 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11425 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11426 al++;
11427 if (al >= end)
11428 goto process_value;
11429
11430 /* Expect '='. If no '=', continue in best effort */
11431 if (*al != '=')
11432 goto process_value;
11433 al++;
11434
11435 /* Jump spaces, process value if the end is detected. */
Willy Tarreau506c69a2014-07-08 00:59:48 +0200[diff] [blame]11436 while (al < end && isspace((unsigned char)*al))
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11437 al++;
11438 if (al >= end)
11439 goto process_value;
11440
11441 /* Parse the q value. */
11442 qvalue = parse_qvalue(al, &al);
11443
11444process_value:
11445
11446 /* If the new q value is the best q value, then store the associated
11447 * language in the response. If qvalue is the biggest value (1000),
11448 * break the process.
11449 */
11450 if (qvalue > best_q) {
11451 smp->data.str.str = (char *)w;
11452 smp->data.str.len = str - w;
11453 if (qvalue >= 1000)
11454 break;
11455 best_q = qvalue;
11456 }
11457
11458expect_comma:
11459
11460 /* Expect comma or end. If the end is detected, quit the loop. */
11461 while (al < end && *al != ',')
11462 al++;
11463 if (al >= end)
11464 break;
11465
11466 /* Comma is found, jump it and restart the analyzer. */
11467 al++;
11468 }
11469
11470 /* Set default value if required. */
11471 if (smp->data.str.len == 0 && args[1].type == ARGT_STR) {
11472 smp->data.str.str = args[1].data.str.str;
11473 smp->data.str.len = args[1].data.str.len;
11474 }
11475
11476 /* Return true only if a matching language was found. */
11477 return smp->data.str.len != 0;
11478}
11479
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11480/* This function executes one of the set-{method,path,query,uri} actions. It
11481 * builds a string in the trash from the specified format string, then modifies
11482 * the relevant part of the request line accordingly. Then it updates various
11483 * pointers to the next elements which were moved, and the total buffer length.
11484 * It finds the action to be performed in p[2], previously filled by function
11485 * parse_set_req_line(). It returns 0 in case of success, -1 in case of internal
11486 * error, though this can be revisited when this code is finally exploited.
11487 */
11488int http_action_set_req_line(struct http_req_rule *rule, struct proxy *px, struct session *s, struct http_txn *txn)
11489{
11490 char *cur_ptr, *cur_end;
11491 int offset;
11492 int delta;
11493
11494 chunk_reset(&trash);
11495
11496 /* prepare a '?' just in case we have to create a query string */
11497 trash.str[trash.len++] = '?';
11498 offset = 1;
11499 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, (struct list *)&rule->arg.act.p[0]);
11500
11501 switch (*(int *)&rule->arg.act.p[2]) {
11502 case 0: // method
11503 cur_ptr = s->req->buf->p;
11504 cur_end = cur_ptr + txn->req.sl.rq.m_l;
11505
11506 /* adjust req line offsets and lengths */
11507 delta = trash.len - offset - (cur_end - cur_ptr);
11508 txn->req.sl.rq.m_l += delta;
11509 txn->req.sl.rq.u += delta;
11510 txn->req.sl.rq.v += delta;
11511 break;
11512
11513 case 1: // path
11514 cur_ptr = http_get_path(txn);
11515 if (!cur_ptr)
11516 cur_ptr = s->req->buf->p + txn->req.sl.rq.u;
11517
11518 cur_end = cur_ptr;
11519 while (cur_end < s->req->buf->p + txn->req.sl.rq.u + txn->req.sl.rq.u_l && *cur_end != '?')
11520 cur_end++;
11521
11522 /* adjust req line offsets and lengths */
11523 delta = trash.len - offset - (cur_end - cur_ptr);
11524 txn->req.sl.rq.u_l += delta;
11525 txn->req.sl.rq.v += delta;
11526 break;
11527
11528 case 2: // query
11529 cur_ptr = s->req->buf->p + txn->req.sl.rq.u;
11530 cur_end = cur_ptr + txn->req.sl.rq.u_l;
11531 while (cur_ptr < cur_end && *cur_ptr != '?')
11532 cur_ptr++;
11533
11534 /* skip the question mark or indicate that we must insert it
11535 * (but only if the format string is not empty then).
11536 */
11537 if (cur_ptr < cur_end)
11538 cur_ptr++;
11539 else if (trash.len > 1)
11540 offset = 0;
11541
11542 /* adjust req line offsets and lengths */
11543 delta = trash.len - offset - (cur_end - cur_ptr);
11544 txn->req.sl.rq.u_l += delta;
11545 txn->req.sl.rq.v += delta;
11546 break;
11547
11548 case 3: // uri
11549 cur_ptr = s->req->buf->p + txn->req.sl.rq.u;
11550 cur_end = cur_ptr + txn->req.sl.rq.u_l;
11551
11552 /* adjust req line offsets and lengths */
11553 delta = trash.len - offset - (cur_end - cur_ptr);
11554 txn->req.sl.rq.u_l += delta;
11555 txn->req.sl.rq.v += delta;
11556 break;
11557
11558 default:
11559 return -1;
11560 }
11561
11562 /* commit changes and adjust end of message */
11563 delta = buffer_replace2(s->req->buf, cur_ptr, cur_end, trash.str + offset, trash.len - offset);
11564 http_msg_move_end(&txn->req, delta);
11565 return 0;
11566}
11567
11568/* parse an http-request action among :
11569 * set-method
11570 * set-path
11571 * set-query
11572 * set-uri
11573 *
11574 * All of them accept a single argument of type string representing a log-format.
11575 * The resulting rule makes use of arg->act.p[0..1] to store the log-format list
11576 * head, and p[2] to store the action as an int (0=method, 1=path, 2=query, 3=uri).
11577 * It returns 0 on success, < 0 on error.
11578 */
11579int parse_set_req_line(const char **args, int *orig_arg, struct proxy *px, struct http_req_rule *rule, char **err)
11580{
11581 int cur_arg = *orig_arg;
11582
11583 rule->action = HTTP_REQ_ACT_CUSTOM_CONT;
11584
11585 switch (args[0][4]) {
11586 case 'm' :
11587 *(int *)&rule->arg.act.p[2] = 0;
11588 rule->action_ptr = http_action_set_req_line;
11589 break;
11590 case 'p' :
11591 *(int *)&rule->arg.act.p[2] = 1;
11592 rule->action_ptr = http_action_set_req_line;
11593 break;
11594 case 'q' :
11595 *(int *)&rule->arg.act.p[2] = 2;
11596 rule->action_ptr = http_action_set_req_line;
11597 break;
11598 case 'u' :
11599 *(int *)&rule->arg.act.p[2] = 3;
11600 rule->action_ptr = http_action_set_req_line;
11601 break;
11602 default:
11603 memprintf(err, "internal error: unhandled action '%s'", args[0]);
11604 return -1;
11605 }
11606
11607 if (!*args[cur_arg] ||
11608 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
11609 memprintf(err, "expects exactly 1 argument <format>");
11610 return -1;
11611 }
11612
11613 LIST_INIT((struct list *)&rule->arg.act.p[0]);
11614 proxy->conf.args.ctx = ARGC_HRQ;
11615 parse_logformat_string(args[cur_arg], proxy, (struct list *)&rule->arg.act.p[0], LOG_OPT_HTTP,
11616 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR,
11617 proxy->conf.args.file, proxy->conf.args.line);
11618
11619 (*orig_arg)++;
11620 return 0;
11621}
11622
William Lallemand73025dd2014-04-24 14:38:37 +0200[diff] [blame]11623/*
11624 * Return the struct http_req_action_kw associated to a keyword.
11625 */
11626struct http_req_action_kw *action_http_req_custom(const char *kw)
11627{
11628 if (!LIST_ISEMPTY(&http_req_keywords.list)) {
11629 struct http_req_action_kw_list *kw_list;
11630 int i;
11631
11632 list_for_each_entry(kw_list, &http_req_keywords.list, list) {
11633 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
11634 if (!strcmp(kw, kw_list->kw[i].kw))
11635 return &kw_list->kw[i];
11636 }
11637 }
11638 }
11639 return NULL;
11640}
11641
11642/*
11643 * Return the struct http_res_action_kw associated to a keyword.
11644 */
11645struct http_res_action_kw *action_http_res_custom(const char *kw)
11646{
11647 if (!LIST_ISEMPTY(&http_res_keywords.list)) {
11648 struct http_res_action_kw_list *kw_list;
11649 int i;
11650
11651 list_for_each_entry(kw_list, &http_res_keywords.list, list) {
11652 for (i = 0; kw_list->kw[i].kw != NULL; i++) {
11653 if (!strcmp(kw, kw_list->kw[i].kw))
11654 return &kw_list->kw[i];
11655 }
11656 }
11657 }
11658 return NULL;
11659}
11660
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11661/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11662/* All supported ACL keywords must be declared here. */
11663/************************************************************************/
11664
11665/* Note: must not be declared <const> as its list will be overwritten.
11666 * Please take care of keeping this list alphabetically sorted.
11667 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]11668static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11669 { "base", "base", PAT_MATCH_STR },
11670 { "base_beg", "base", PAT_MATCH_BEG },
11671 { "base_dir", "base", PAT_MATCH_DIR },
11672 { "base_dom", "base", PAT_MATCH_DOM },
11673 { "base_end", "base", PAT_MATCH_END },
11674 { "base_len", "base", PAT_MATCH_LEN },
11675 { "base_reg", "base", PAT_MATCH_REG },
11676 { "base_sub", "base", PAT_MATCH_SUB },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]11677
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11678 { "cook", "req.cook", PAT_MATCH_STR },
11679 { "cook_beg", "req.cook", PAT_MATCH_BEG },
11680 { "cook_dir", "req.cook", PAT_MATCH_DIR },
11681 { "cook_dom", "req.cook", PAT_MATCH_DOM },
11682 { "cook_end", "req.cook", PAT_MATCH_END },
11683 { "cook_len", "req.cook", PAT_MATCH_LEN },
11684 { "cook_reg", "req.cook", PAT_MATCH_REG },
11685 { "cook_sub", "req.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11686
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11687 { "hdr", "req.hdr", PAT_MATCH_STR },
11688 { "hdr_beg", "req.hdr", PAT_MATCH_BEG },
11689 { "hdr_dir", "req.hdr", PAT_MATCH_DIR },
11690 { "hdr_dom", "req.hdr", PAT_MATCH_DOM },
11691 { "hdr_end", "req.hdr", PAT_MATCH_END },
11692 { "hdr_len", "req.hdr", PAT_MATCH_LEN },
11693 { "hdr_reg", "req.hdr", PAT_MATCH_REG },
11694 { "hdr_sub", "req.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11695
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11696 /* these two declarations uses strings with list storage (in place
11697 * of tree storage). The basic match is PAT_MATCH_STR, but the indexation
11698 * and delete functions are relative to the list management. The parse
11699 * and match method are related to the corresponding fetch methods. This
11700 * is very particular ACL declaration mode.
11701 */
11702 { "http_auth_group", NULL, PAT_MATCH_STR, NULL, pat_idx_list_str, pat_del_list_ptr, NULL, pat_match_auth },
11703 { "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]11704
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11705 { "path", "path", PAT_MATCH_STR },
11706 { "path_beg", "path", PAT_MATCH_BEG },
11707 { "path_dir", "path", PAT_MATCH_DIR },
11708 { "path_dom", "path", PAT_MATCH_DOM },
11709 { "path_end", "path", PAT_MATCH_END },
11710 { "path_len", "path", PAT_MATCH_LEN },
11711 { "path_reg", "path", PAT_MATCH_REG },
11712 { "path_sub", "path", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11713
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11714 { "req_ver", "req.ver", PAT_MATCH_STR },
11715 { "resp_ver", "res.ver", PAT_MATCH_STR },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11716
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11717 { "scook", "res.cook", PAT_MATCH_STR },
11718 { "scook_beg", "res.cook", PAT_MATCH_BEG },
11719 { "scook_dir", "res.cook", PAT_MATCH_DIR },
11720 { "scook_dom", "res.cook", PAT_MATCH_DOM },
11721 { "scook_end", "res.cook", PAT_MATCH_END },
11722 { "scook_len", "res.cook", PAT_MATCH_LEN },
11723 { "scook_reg", "res.cook", PAT_MATCH_REG },
11724 { "scook_sub", "res.cook", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11725
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11726 { "shdr", "res.hdr", PAT_MATCH_STR },
11727 { "shdr_beg", "res.hdr", PAT_MATCH_BEG },
11728 { "shdr_dir", "res.hdr", PAT_MATCH_DIR },
11729 { "shdr_dom", "res.hdr", PAT_MATCH_DOM },
11730 { "shdr_end", "res.hdr", PAT_MATCH_END },
11731 { "shdr_len", "res.hdr", PAT_MATCH_LEN },
11732 { "shdr_reg", "res.hdr", PAT_MATCH_REG },
11733 { "shdr_sub", "res.hdr", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11734
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11735 { "url", "url", PAT_MATCH_STR },
11736 { "url_beg", "url", PAT_MATCH_BEG },
11737 { "url_dir", "url", PAT_MATCH_DIR },
11738 { "url_dom", "url", PAT_MATCH_DOM },
11739 { "url_end", "url", PAT_MATCH_END },
11740 { "url_len", "url", PAT_MATCH_LEN },
11741 { "url_reg", "url", PAT_MATCH_REG },
11742 { "url_sub", "url", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11743
Thierry FOURNIERc5a4e982014-03-05 16:07:08 +0100[diff] [blame]11744 { "urlp", "urlp", PAT_MATCH_STR },
11745 { "urlp_beg", "urlp", PAT_MATCH_BEG },
11746 { "urlp_dir", "urlp", PAT_MATCH_DIR },
11747 { "urlp_dom", "urlp", PAT_MATCH_DOM },
11748 { "urlp_end", "urlp", PAT_MATCH_END },
11749 { "urlp_len", "urlp", PAT_MATCH_LEN },
11750 { "urlp_reg", "urlp", PAT_MATCH_REG },
11751 { "urlp_sub", "urlp", PAT_MATCH_SUB },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11752
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]11753 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]11754}};
11755
11756/************************************************************************/
11757/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11758/************************************************************************/
11759/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]11760static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11761 { "base", smp_fetch_base, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11762 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
11763 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
11764
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11765 /* capture are allocated and are permanent in the session */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11766 { "capture.req.hdr", smp_fetch_capture_header_req, ARG1(1, UINT), NULL, SMP_T_STR, SMP_USE_HRQHP },
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11767
11768 /* retrieve these captures from the HTTP logs */
11769 { "capture.req.method", smp_fetch_capture_req_method, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11770 { "capture.req.uri", smp_fetch_capture_req_uri, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11771 { "capture.req.ver", smp_fetch_capture_req_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
11772
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11773 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1, UINT), NULL, SMP_T_STR, SMP_USE_HRSHP },
Willy Tarreau3c1b5ec2014-04-24 23:41:57 +0200[diff] [blame]11774 { "capture.res.ver", smp_fetch_capture_res_ver, 0, NULL, SMP_T_STR, SMP_USE_HRQHP },
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]11775
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11776 /* cookie is valid in both directions (eg: for "stick ...") but cook*
11777 * are only here to match the ACL's name, are request-only and are used
11778 * for ACL compatibility only.
11779 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11780 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
11781 { "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]11782 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11783 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11784
11785 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
11786 * only here to match the ACL's name, are request-only and are used for
11787 * ACL compatibility only.
11788 */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11789 { "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]11790 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11791 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
11792 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
11793
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]11794 { "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]11795 { "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]11796 { "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]11797 { "method", smp_fetch_meth, 0, NULL, SMP_T_METH, SMP_USE_HRQHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11798 { "path", smp_fetch_path, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau49ad95c2015-01-19 15:06:26 +0100[diff] [blame]11799 { "query", smp_fetch_query, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11800
11801 /* HTTP protocol on the request path */
11802 { "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]11803 { "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]11804
11805 /* HTTP version on the request path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11806 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
11807 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11808
11809 /* HTTP version on the response path */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11810 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
11811 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11812
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]11813 /* 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]11814 { "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]11815 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11816 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11817
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11818 { "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]11819 { "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]11820 { "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]11821 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11822 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
11823 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
11824
11825 /* 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]11826 { "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]11827 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11828 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11829
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11830 { "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]11831 { "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]11832 { "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]11833 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11834 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
11835 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
11836
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11837 /* scook is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11838 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_STR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11839 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11840 { "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]11841 { "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]11842
11843 /* shdr is valid only on the response and is used for ACL compatibility */
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11844 { "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]11845 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
11846 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
11847 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
11848
11849 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11850 { "url", smp_fetch_url, 0, NULL, SMP_T_STR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]11851 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
11852 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]11853 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
11854 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
Thierry FOURNIER7654c9f2013-12-17 00:20:33 +0100[diff] [blame]11855 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_STR, SMP_USE_HRQHV },
11856 { "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]11857 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
11858 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]11859}};
11860
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11861
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11862/************************************************************************/
11863/* All supported converter keywords must be declared here. */
11864/************************************************************************/
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11865/* Note: must not be declared <const> as its list will be overwritten */
11866static struct sample_conv_kw_list sample_conv_kws = {ILH, {
Thierry FOURNIERad903512014-04-11 17:51:01 +0200[diff] [blame]11867 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR},
11868 { "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]11869 { NULL, NULL, 0, 0, 0 },
11870}};
11871
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11872/************************************************************************/
11873/* All supported http-request action keywords must be declared here. */
11874/************************************************************************/
11875struct http_req_action_kw_list http_req_actions = {
11876 .scope = "http",
11877 .kw = {
11878 { "set-method", parse_set_req_line },
11879 { "set-path", parse_set_req_line },
11880 { "set-query", parse_set_req_line },
11881 { "set-uri", parse_set_req_line },
11882 }
11883};
11884
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11885__attribute__((constructor))
11886static void __http_protocol_init(void)
11887{
11888 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]11889 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]11890 sample_register_convs(&sample_conv_kws);
Willy Tarreaua0dc23f2015-01-22 20:46:11 +0100[diff] [blame]11891 http_req_keywords_register(&http_req_actions);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]11892}
11893
11894
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]11895/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]11896 * Local variables:
11897 * c-indent-level: 8
11898 * c-basic-offset: 8
11899 * End:
11900 */