Gitiles
Code Review Sign In
git01.mediatek.com / haproxy / 068621e4adcf5c1010b233a442f3cd9f28dc0b6e / . / src / proto_http.c
blob: 624a51fa38c62e35fc0bf0d9fd56705a1d6c5b45 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]28#include <common/appsession.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]29#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]30#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]31#include <common/compat.h>
32#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]33#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/memory.h>
35#include <common/mini-clist.h>
36#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]37#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]38#include <common/time.h>
39#include <common/uri_auth.h>
40#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]41
42#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]46#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]47#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]48#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]49#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]50#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]51#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]52#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]54#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]55#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]56#include <proto/hdr_idx.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]57#include <proto/pattern.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]58#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]59#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]60#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]61#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]62#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]63#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]64#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]65#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]66#include <proto/task.h>
67
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]68const char HTTP_100[] =
69 "HTTP/1.1 100 Continue\r\n\r\n";
70
71const struct chunk http_100_chunk = {
72 .str = (char *)&HTTP_100,
73 .len = sizeof(HTTP_100)-1
74};
75
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]76/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]77const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]78 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]79 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]80 "Location: "; /* not terminated since it will be concatenated with the URL */
81
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]82const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]83 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]84 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]85 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86 "Location: "; /* not terminated since it will be concatenated with the URL */
87
88/* same as 302 except that the browser MUST retry with the GET method */
89const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]90 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]91 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]92 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]93 "Location: "; /* not terminated since it will be concatenated with the URL */
94
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]95
96/* same as 302 except that the browser MUST retry with the same method */
97const char *HTTP_307 =
98 "HTTP/1.1 307 Temporary Redirect\r\n"
99 "Cache-Control: no-cache\r\n"
100 "Content-length: 0\r\n"
101 "Location: "; /* not terminated since it will be concatenated with the URL */
102
103/* same as 301 except that the browser MUST retry with the same method */
104const char *HTTP_308 =
105 "HTTP/1.1 308 Permanent Redirect\r\n"
106 "Content-length: 0\r\n"
107 "Location: "; /* not terminated since it will be concatenated with the URL */
108
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]109/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
110const char *HTTP_401_fmt =
111 "HTTP/1.0 401 Unauthorized\r\n"
112 "Cache-Control: no-cache\r\n"
113 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]114 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]115 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
116 "\r\n"
117 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
118
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]119const char *HTTP_407_fmt =
120 "HTTP/1.0 407 Unauthorized\r\n"
121 "Cache-Control: no-cache\r\n"
122 "Connection: close\r\n"
123 "Content-Type: text/html\r\n"
124 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
125 "\r\n"
126 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
127
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]128
129const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]130 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]131 [HTTP_ERR_400] = 400,
132 [HTTP_ERR_403] = 403,
133 [HTTP_ERR_408] = 408,
134 [HTTP_ERR_500] = 500,
135 [HTTP_ERR_502] = 502,
136 [HTTP_ERR_503] = 503,
137 [HTTP_ERR_504] = 504,
138};
139
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]140static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]141 [HTTP_ERR_200] =
142 "HTTP/1.0 200 OK\r\n"
143 "Cache-Control: no-cache\r\n"
144 "Connection: close\r\n"
145 "Content-Type: text/html\r\n"
146 "\r\n"
147 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
148
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]149 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]150 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]151 "Cache-Control: no-cache\r\n"
152 "Connection: close\r\n"
153 "Content-Type: text/html\r\n"
154 "\r\n"
155 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
156
157 [HTTP_ERR_403] =
158 "HTTP/1.0 403 Forbidden\r\n"
159 "Cache-Control: no-cache\r\n"
160 "Connection: close\r\n"
161 "Content-Type: text/html\r\n"
162 "\r\n"
163 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
164
165 [HTTP_ERR_408] =
166 "HTTP/1.0 408 Request Time-out\r\n"
167 "Cache-Control: no-cache\r\n"
168 "Connection: close\r\n"
169 "Content-Type: text/html\r\n"
170 "\r\n"
171 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
172
173 [HTTP_ERR_500] =
174 "HTTP/1.0 500 Server Error\r\n"
175 "Cache-Control: no-cache\r\n"
176 "Connection: close\r\n"
177 "Content-Type: text/html\r\n"
178 "\r\n"
179 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
180
181 [HTTP_ERR_502] =
182 "HTTP/1.0 502 Bad Gateway\r\n"
183 "Cache-Control: no-cache\r\n"
184 "Connection: close\r\n"
185 "Content-Type: text/html\r\n"
186 "\r\n"
187 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
188
189 [HTTP_ERR_503] =
190 "HTTP/1.0 503 Service Unavailable\r\n"
191 "Cache-Control: no-cache\r\n"
192 "Connection: close\r\n"
193 "Content-Type: text/html\r\n"
194 "\r\n"
195 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
196
197 [HTTP_ERR_504] =
198 "HTTP/1.0 504 Gateway Time-out\r\n"
199 "Cache-Control: no-cache\r\n"
200 "Connection: close\r\n"
201 "Content-Type: text/html\r\n"
202 "\r\n"
203 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
204
205};
206
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]207/* status codes available for the stats admin page (strictly 4 chars length) */
208const char *stat_status_codes[STAT_STATUS_SIZE] = {
209 [STAT_STATUS_DENY] = "DENY",
210 [STAT_STATUS_DONE] = "DONE",
211 [STAT_STATUS_ERRP] = "ERRP",
212 [STAT_STATUS_EXCD] = "EXCD",
213 [STAT_STATUS_NONE] = "NONE",
214 [STAT_STATUS_PART] = "PART",
215 [STAT_STATUS_UNKN] = "UNKN",
216};
217
218
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]219/* We must put the messages here since GCC cannot initialize consts depending
220 * on strlen().
221 */
222struct chunk http_err_chunks[HTTP_ERR_SIZE];
223
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]224/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
225static struct hdr_ctx static_hdr_ctx;
226
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]227#define FD_SETS_ARE_BITFIELDS
228#ifdef FD_SETS_ARE_BITFIELDS
229/*
230 * This map is used with all the FD_* macros to check whether a particular bit
231 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
232 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
233 * byte should be encoded. Be careful to always pass bytes from 0 to 255
234 * exclusively to the macros.
235 */
236fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
237fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
238
239#else
240#error "Check if your OS uses bitfields for fd_sets"
241#endif
242
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]243void init_proto_http()
244{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]245 int i;
246 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]247 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]248
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]249 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
250 if (!http_err_msgs[msg]) {
251 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
252 abort();
253 }
254
255 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
256 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
257 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]258
259 /* initialize the log header encoding map : '{|}"#' should be encoded with
260 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
261 * URL encoding only requires '"', '#' to be encoded as well as non-
262 * printable characters above.
263 */
264 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
265 memset(url_encode_map, 0, sizeof(url_encode_map));
266 for (i = 0; i < 32; i++) {
267 FD_SET(i, hdr_encode_map);
268 FD_SET(i, url_encode_map);
269 }
270 for (i = 127; i < 256; i++) {
271 FD_SET(i, hdr_encode_map);
272 FD_SET(i, url_encode_map);
273 }
274
275 tmp = "\"#{|}";
276 while (*tmp) {
277 FD_SET(*tmp, hdr_encode_map);
278 tmp++;
279 }
280
281 tmp = "\"#";
282 while (*tmp) {
283 FD_SET(*tmp, url_encode_map);
284 tmp++;
285 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]286
287 /* memory allocations */
288 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]289 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]290}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]291
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]292/*
293 * We have 26 list of methods (1 per first letter), each of which can have
294 * up to 3 entries (2 valid, 1 null).
295 */
296struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]297 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]298 int len;
299 const char text[8];
300};
301
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]302const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]303 ['C' - 'A'] = {
304 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
305 },
306 ['D' - 'A'] = {
307 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
308 },
309 ['G' - 'A'] = {
310 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
311 },
312 ['H' - 'A'] = {
313 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
314 },
315 ['P' - 'A'] = {
316 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
317 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
318 },
319 ['T' - 'A'] = {
320 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
321 },
322 /* rest is empty like this :
323 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
324 */
325};
326
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]327/* 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]328 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]329 * RFC2616 for those chars.
330 */
331
332const char http_is_spht[256] = {
333 [' '] = 1, ['\t'] = 1,
334};
335
336const char http_is_crlf[256] = {
337 ['\r'] = 1, ['\n'] = 1,
338};
339
340const char http_is_lws[256] = {
341 [' '] = 1, ['\t'] = 1,
342 ['\r'] = 1, ['\n'] = 1,
343};
344
345const char http_is_sep[256] = {
346 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
347 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
348 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
349 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
350 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
351};
352
353const char http_is_ctl[256] = {
354 [0 ... 31] = 1,
355 [127] = 1,
356};
357
358/*
359 * A token is any ASCII char that is neither a separator nor a CTL char.
360 * Do not overwrite values in assignment since gcc-2.95 will not handle
361 * them correctly. Instead, define every non-CTL char's status.
362 */
363const char http_is_token[256] = {
364 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
365 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
366 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
367 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
368 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
369 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
370 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
371 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
372 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
373 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
374 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
375 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
376 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
377 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
378 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
379 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
380 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
381 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
382 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
383 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
384 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
385 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
386 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
387 ['|'] = 1, ['}'] = 0, ['~'] = 1,
388};
389
390
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]391/*
392 * An http ver_token is any ASCII which can be found in an HTTP version,
393 * which includes 'H', 'T', 'P', '/', '.' and any digit.
394 */
395const char http_is_ver_token[256] = {
396 ['.'] = 1, ['/'] = 1,
397 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
398 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
399 ['H'] = 1, ['P'] = 1, ['T'] = 1,
400};
401
402
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]403/*
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]404 * Silent debug that outputs only in strace, using fd #-1. Trash is modified.
405 */
406#if defined(DEBUG_FSM)
407static void http_silent_debug(int line, struct session *s)
408{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]409 chunk_printf(&trash,
410 "[%04d] req: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld tf=%08x\n",
411 line,
412 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
413 s->req->buf->data, s->req->buf->size, s->req->l, s->req->w, s->req->r, s->req->buf->p, s->req->buf->o, s->req->to_forward, s->txn.flags);
414 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]415
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]416 chunk_printf(&trash,
417 " %04d rep: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld\n",
418 line,
419 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
420 s->rep->buf->data, s->rep->buf->size, s->rep->l, s->rep->w, s->rep->r, s->rep->buf->p, s->rep->buf->o, s->rep->to_forward);
421 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]422}
423#else
424#define http_silent_debug(l,s) do { } while (0)
425#endif
426
427/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]428 * Adds a header and its CRLF at the tail of the message's buffer, just before
429 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]430 * The header is also automatically added to the index <hdr_idx>, and the end
431 * of headers is automatically adjusted. The number of bytes added is returned
432 * on success, otherwise <0 is returned indicating an error.
433 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]434int 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]435{
436 int bytes, len;
437
438 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]439 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]440 if (!bytes)
441 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]442 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]443 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
444}
445
446/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]447 * Adds a header and its CRLF at the tail of the message's buffer, just before
448 * 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]449 * the buffer is only opened and the space reserved, but nothing is copied.
450 * The header is also automatically added to the index <hdr_idx>, and the end
451 * of headers is automatically adjusted. The number of bytes added is returned
452 * on success, otherwise <0 is returned indicating an error.
453 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]454int http_header_add_tail2(struct http_msg *msg,
455 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]456{
457 int bytes;
458
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]459 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]460 if (!bytes)
461 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]462 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]463 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
464}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]465
466/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]467 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
468 * If so, returns the position of the first non-space character relative to
469 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
470 * to return a pointer to the place after the first space. Returns 0 if the
471 * header name does not match. Checks are case-insensitive.
472 */
473int http_header_match2(const char *hdr, const char *end,
474 const char *name, int len)
475{
476 const char *val;
477
478 if (hdr + len >= end)
479 return 0;
480 if (hdr[len] != ':')
481 return 0;
482 if (strncasecmp(hdr, name, len) != 0)
483 return 0;
484 val = hdr + len + 1;
485 while (val < end && HTTP_IS_SPHT(*val))
486 val++;
487 if ((val >= end) && (len + 2 <= end - hdr))
488 return len + 2; /* we may replace starting from second space */
489 return val - hdr;
490}
491
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]492/* Find the first or next occurrence of header <name> in message buffer <sol>
493 * using headers index <idx>, and return it in the <ctx> structure. This
494 * structure holds everything necessary to use the header and find next
495 * occurrence. If its <idx> member is 0, the header is searched from the
496 * beginning. Otherwise, the next occurrence is returned. The function returns
497 * 1 when it finds a value, and 0 when there is no more. It is very similar to
498 * http_find_header2() except that it is designed to work with full-line headers
499 * whose comma is not a delimiter but is part of the syntax. As a special case,
500 * if ctx->val is NULL when searching for a new values of a header, the current
501 * header is rescanned. This allows rescanning after a header deletion.
502 */
503int http_find_full_header2(const char *name, int len,
504 char *sol, struct hdr_idx *idx,
505 struct hdr_ctx *ctx)
506{
507 char *eol, *sov;
508 int cur_idx, old_idx;
509
510 cur_idx = ctx->idx;
511 if (cur_idx) {
512 /* We have previously returned a header, let's search another one */
513 sol = ctx->line;
514 eol = sol + idx->v[cur_idx].len;
515 goto next_hdr;
516 }
517
518 /* first request for this header */
519 sol += hdr_idx_first_pos(idx);
520 old_idx = 0;
521 cur_idx = hdr_idx_first_idx(idx);
522 while (cur_idx) {
523 eol = sol + idx->v[cur_idx].len;
524
525 if (len == 0) {
526 /* No argument was passed, we want any header.
527 * To achieve this, we simply build a fake request. */
528 while (sol + len < eol && sol[len] != ':')
529 len++;
530 name = sol;
531 }
532
533 if ((len < eol - sol) &&
534 (sol[len] == ':') &&
535 (strncasecmp(sol, name, len) == 0)) {
536 ctx->del = len;
537 sov = sol + len + 1;
538 while (sov < eol && http_is_lws[(unsigned char)*sov])
539 sov++;
540
541 ctx->line = sol;
542 ctx->prev = old_idx;
543 ctx->idx = cur_idx;
544 ctx->val = sov - sol;
545 ctx->tws = 0;
546 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
547 eol--;
548 ctx->tws++;
549 }
550 ctx->vlen = eol - sov;
551 return 1;
552 }
553 next_hdr:
554 sol = eol + idx->v[cur_idx].cr + 1;
555 old_idx = cur_idx;
556 cur_idx = idx->v[cur_idx].next;
557 }
558 return 0;
559}
560
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]561/* Find the end of the header value contained between <s> and <e>. See RFC2616,
562 * par 2.2 for more information. Note that it requires a valid header to return
563 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]564 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]565char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]566{
567 int quoted, qdpair;
568
569 quoted = qdpair = 0;
570 for (; s < e; s++) {
571 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]572 else if (quoted) {
573 if (*s == '\\') qdpair = 1;
574 else if (*s == '"') quoted = 0;
575 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]576 else if (*s == '"') quoted = 1;
577 else if (*s == ',') return s;
578 }
579 return s;
580}
581
582/* Find the first or next occurrence of header <name> in message buffer <sol>
583 * using headers index <idx>, and return it in the <ctx> structure. This
584 * structure holds everything necessary to use the header and find next
585 * occurrence. If its <idx> member is 0, the header is searched from the
586 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]587 * 1 when it finds a value, and 0 when there is no more. It is designed to work
588 * with headers defined as comma-separated lists. As a special case, if ctx->val
589 * is NULL when searching for a new values of a header, the current header is
590 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]591 */
592int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]593 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]594 struct hdr_ctx *ctx)
595{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]596 char *eol, *sov;
597 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]598
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]599 cur_idx = ctx->idx;
600 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]601 /* We have previously returned a value, let's search
602 * another one on the same line.
603 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]604 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]605 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]606 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]607 eol = sol + idx->v[cur_idx].len;
608
609 if (sov >= eol)
610 /* no more values in this header */
611 goto next_hdr;
612
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]613 /* values remaining for this header, skip the comma but save it
614 * for later use (eg: for header deletion).
615 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]616 sov++;
617 while (sov < eol && http_is_lws[(unsigned char)*sov])
618 sov++;
619
620 goto return_hdr;
621 }
622
623 /* first request for this header */
624 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]625 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]626 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]627 while (cur_idx) {
628 eol = sol + idx->v[cur_idx].len;
629
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]630 if (len == 0) {
631 /* No argument was passed, we want any header.
632 * To achieve this, we simply build a fake request. */
633 while (sol + len < eol && sol[len] != ':')
634 len++;
635 name = sol;
636 }
637
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]638 if ((len < eol - sol) &&
639 (sol[len] == ':') &&
640 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]641 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]642 sov = sol + len + 1;
643 while (sov < eol && http_is_lws[(unsigned char)*sov])
644 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]645
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]646 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]647 ctx->prev = old_idx;
648 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]649 ctx->idx = cur_idx;
650 ctx->val = sov - sol;
651
652 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]653 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]654 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]655 eol--;
656 ctx->tws++;
657 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]658 ctx->vlen = eol - sov;
659 return 1;
660 }
661 next_hdr:
662 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]663 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]664 cur_idx = idx->v[cur_idx].next;
665 }
666 return 0;
667}
668
669int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]670 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]671 struct hdr_ctx *ctx)
672{
673 return http_find_header2(name, strlen(name), sol, idx, ctx);
674}
675
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]676/* Remove one value of a header. This only works on a <ctx> returned by one of
677 * the http_find_header functions. The value is removed, as well as surrounding
678 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]679 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]680 * message <msg>. The new index is returned. If it is zero, it means there is
681 * no more header, so any processing may stop. The ctx is always left in a form
682 * that can be handled by http_find_header2() to find next occurrence.
683 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]684int 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]685{
686 int cur_idx = ctx->idx;
687 char *sol = ctx->line;
688 struct hdr_idx_elem *hdr;
689 int delta, skip_comma;
690
691 if (!cur_idx)
692 return 0;
693
694 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]695 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]696 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]697 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]698 http_msg_move_end(msg, delta);
699 idx->used--;
700 hdr->len = 0; /* unused entry */
701 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]702 if (idx->tail == ctx->idx)
703 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]704 ctx->idx = ctx->prev; /* walk back to the end of previous header */
705 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
706 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]707 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]708 return ctx->idx;
709 }
710
711 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]712 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
713 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]714 */
715
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]716 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]717 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]718 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]719 NULL, 0);
720 hdr->len += delta;
721 http_msg_move_end(msg, delta);
722 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]723 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]724 return ctx->idx;
725}
726
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]727/* This function handles a server error at the stream interface level. The
728 * stream interface is assumed to be already in a closed state. An optional
729 * message is copied into the input buffer, and an HTTP status code stored.
730 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]731 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]732 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]733static void http_server_error(struct session *t, struct stream_interface *si,
734 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]735{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]736 channel_auto_read(si->ob);
737 channel_abort(si->ob);
738 channel_auto_close(si->ob);
739 channel_erase(si->ob);
740 channel_auto_close(si->ib);
741 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]742 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]743 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]744 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]745 }
746 if (!(t->flags & SN_ERR_MASK))
747 t->flags |= err;
748 if (!(t->flags & SN_FINST_MASK))
749 t->flags |= finst;
750}
751
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]752/* This function returns the appropriate error location for the given session
753 * and message.
754 */
755
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]756struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]757{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]758 if (s->be->errmsg[msgnum].str)
759 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]760 else if (s->fe->errmsg[msgnum].str)
761 return &s->fe->errmsg[msgnum];
762 else
763 return &http_err_chunks[msgnum];
764}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]765
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]766/*
767 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
768 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
769 */
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]770static enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]771{
772 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]773 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]774
775 m = ((unsigned)*str - 'A');
776
777 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]778 for (h = http_methods[m]; h->len > 0; h++) {
779 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]780 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]781 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]782 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]783 };
784 return HTTP_METH_OTHER;
785 }
786 return HTTP_METH_NONE;
787
788}
789
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]790/* Parse the URI from the given transaction (which is assumed to be in request
791 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
792 * It is returned otherwise.
793 */
794static char *
795http_get_path(struct http_txn *txn)
796{
797 char *ptr, *end;
798
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]799 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]800 end = ptr + txn->req.sl.rq.u_l;
801
802 if (ptr >= end)
803 return NULL;
804
805 /* RFC2616, par. 5.1.2 :
806 * Request-URI = "*" | absuri | abspath | authority
807 */
808
809 if (*ptr == '*')
810 return NULL;
811
812 if (isalpha((unsigned char)*ptr)) {
813 /* this is a scheme as described by RFC3986, par. 3.1 */
814 ptr++;
815 while (ptr < end &&
816 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
817 ptr++;
818 /* skip '://' */
819 if (ptr == end || *ptr++ != ':')
820 return NULL;
821 if (ptr == end || *ptr++ != '/')
822 return NULL;
823 if (ptr == end || *ptr++ != '/')
824 return NULL;
825 }
826 /* skip [user[:passwd]@]host[:[port]] */
827
828 while (ptr < end && *ptr != '/')
829 ptr++;
830
831 if (ptr == end)
832 return NULL;
833
834 /* OK, we got the '/' ! */
835 return ptr;
836}
837
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]838/* Returns a 302 for a redirectable request that reaches a server working in
839 * in redirect mode. This may only be called just after the stream interface
840 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
841 * follow normal proxy processing. NOTE: this function is designed to support
842 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]843 */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]844void http_perform_server_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]845{
846 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]847 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]848 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]849 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]850
851 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]852 trash.len = strlen(HTTP_302);
853 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]854
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]855 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]856
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]857 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]858 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]859 return;
860
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]861 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]862 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]863 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
864 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]865 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]866
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]867 /* 3: add the request URI. Since it was already forwarded, we need
868 * to temporarily rewind the buffer.
869 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]870 txn = &s->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]871 b_rew(s->req->buf, rewind = s->req->buf->o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]872
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]873 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]874 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]875
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]876 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]877
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]878 if (!path)
879 return;
880
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]881 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]882 return;
883
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]884 memcpy(trash.str + trash.len, path, len);
885 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]886
887 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]888 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
889 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]890 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]891 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
892 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]893 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]894
895 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]896 si_shutr(si);
897 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]898 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]899 si->state = SI_ST_CLO;
900
901 /* send the message */
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]902 http_server_error(s, si, SN_ERR_LOCAL, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]903
904 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]905 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]906}
907
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]908/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]909 * that the server side is closed. Note that err_type is actually a
910 * bitmask, where almost only aborts may be cumulated with other
911 * values. We consider that aborted operations are more important
912 * than timeouts or errors due to the fact that nobody else in the
913 * logs might explain incomplete retries. All others should avoid
914 * being cumulated. It should normally not be possible to have multiple
915 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]916 * Note that connection errors appearing on the second request of a keep-alive
917 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]918 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]919void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]920{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]921 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]922
923 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]924 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]925 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]926 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]927 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]928 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
929 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]930 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]931 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]932 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]933 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]934 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]935 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]936 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]937 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]938 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
939 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]940 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]941 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]942 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
943 http_error_message(s, HTTP_ERR_503));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]944 else if (err_type & SI_ET_CONN_RES)
945 http_server_error(s, si, SN_ERR_RESOURCE, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]946 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
947 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]948 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]949 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]950 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]951}
952
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]953extern const char sess_term_cond[8];
954extern const char sess_fin_state[8];
955extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]956struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]957struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]958struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]959
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]960/*
961 * Capture headers from message starting at <som> according to header list
962 * <cap_hdr>, and fill the <idx> structure appropriately.
963 */
964void capture_headers(char *som, struct hdr_idx *idx,
965 char **cap, struct cap_hdr *cap_hdr)
966{
967 char *eol, *sol, *col, *sov;
968 int cur_idx;
969 struct cap_hdr *h;
970 int len;
971
972 sol = som + hdr_idx_first_pos(idx);
973 cur_idx = hdr_idx_first_idx(idx);
974
975 while (cur_idx) {
976 eol = sol + idx->v[cur_idx].len;
977
978 col = sol;
979 while (col < eol && *col != ':')
980 col++;
981
982 sov = col + 1;
983 while (sov < eol && http_is_lws[(unsigned char)*sov])
984 sov++;
985
986 for (h = cap_hdr; h; h = h->next) {
987 if ((h->namelen == col - sol) &&
988 (strncasecmp(sol, h->name, h->namelen) == 0)) {
989 if (cap[h->index] == NULL)
990 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]991 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]992
993 if (cap[h->index] == NULL) {
994 Alert("HTTP capture : out of memory.\n");
995 continue;
996 }
997
998 len = eol - sov;
999 if (len > h->len)
1000 len = h->len;
1001
1002 memcpy(cap[h->index], sov, len);
1003 cap[h->index][len]=0;
1004 }
1005 }
1006 sol = eol + idx->v[cur_idx].cr + 1;
1007 cur_idx = idx->v[cur_idx].next;
1008 }
1009}
1010
1011
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1012/* either we find an LF at <ptr> or we jump to <bad>.
1013 */
1014#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1015
1016/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1017 * otherwise to <http_msg_ood> with <state> set to <st>.
1018 */
1019#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1020 ptr++; \
1021 if (likely(ptr < end)) \
1022 goto good; \
1023 else { \
1024 state = (st); \
1025 goto http_msg_ood; \
1026 } \
1027 } while (0)
1028
1029
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1030/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1031 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1032 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1033 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1034 * will give undefined results.
1035 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1036 * and that msg->sol points to the beginning of the response.
1037 * If a complete line is found (which implies that at least one CR or LF is
1038 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1039 * returned indicating an incomplete line (which does not mean that parts have
1040 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1041 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1042 * upon next call.
1043 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1044 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1045 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1046 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1047 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1048 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1049const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1050 enum ht_state state, const char *ptr, const char *end,
1051 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1052{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1053 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1054
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1055 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1056 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1057 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1058 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1059 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1060
1061 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1062 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1063 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1064 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1065 state = HTTP_MSG_ERROR;
1066 break;
1067
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1068 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1069 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1070 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1071 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1072 goto http_msg_rpcode;
1073 }
1074 if (likely(HTTP_IS_SPHT(*ptr)))
1075 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1076 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1077 state = HTTP_MSG_ERROR;
1078 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1079
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1080 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1081 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1082 if (likely(!HTTP_IS_LWS(*ptr)))
1083 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1084
1085 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1086 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1087 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1088 }
1089
1090 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1091 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1092 http_msg_rsp_reason:
1093 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1094 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1095 msg->sl.st.r_l = 0;
1096 goto http_msg_rpline_eol;
1097
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1098 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1099 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1100 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1101 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1102 goto http_msg_rpreason;
1103 }
1104 if (likely(HTTP_IS_SPHT(*ptr)))
1105 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1106 /* so it's a CR/LF, so there is no reason phrase */
1107 goto http_msg_rsp_reason;
1108
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1109 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1110 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1111 if (likely(!HTTP_IS_CRLF(*ptr)))
1112 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1113 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1114 http_msg_rpline_eol:
1115 /* We have seen the end of line. Note that we do not
1116 * necessarily have the \n yet, but at least we know that we
1117 * have EITHER \r OR \n, otherwise the response would not be
1118 * complete. We can then record the response length and return
1119 * to the caller which will be able to register it.
1120 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1121 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1122 return ptr;
1123
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1124 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1125#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1126 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1127 exit(1);
1128#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1129 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1130 }
1131
1132 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1133 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1134 if (ret_state)
1135 *ret_state = state;
1136 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1137 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1138 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1139}
1140
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1141/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1142 * This function parses a request line between <ptr> and <end>, starting with
1143 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1144 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1145 * will give undefined results.
1146 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1147 * and that msg->sol points to the beginning of the request.
1148 * If a complete line is found (which implies that at least one CR or LF is
1149 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1150 * returned indicating an incomplete line (which does not mean that parts have
1151 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1152 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1153 * upon next call.
1154 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1155 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1156 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1157 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1158 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1159 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1160const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1161 enum ht_state state, const char *ptr, const char *end,
1162 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1163{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1164 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1165
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1166 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1167 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1168 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1169 if (likely(HTTP_IS_TOKEN(*ptr)))
1170 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1171
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1172 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1173 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1174 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1175 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1176
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1177 if (likely(HTTP_IS_CRLF(*ptr))) {
1178 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1179 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1180 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1181 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1182 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1183 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1184 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1185 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1186 msg->sl.rq.v_l = 0;
1187 goto http_msg_rqline_eol;
1188 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1189 state = HTTP_MSG_ERROR;
1190 break;
1191
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1192 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1193 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1194 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1195 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1196 goto http_msg_rquri;
1197 }
1198 if (likely(HTTP_IS_SPHT(*ptr)))
1199 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1200 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1201 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1202
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1203 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1204 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1205 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1206 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1207
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1208 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1209 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1210 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1211 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1212
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1213 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1214 /* non-ASCII chars are forbidden unless option
1215 * accept-invalid-http-request is enabled in the frontend.
1216 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1217 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1218 if (msg->err_pos < -1)
1219 goto invalid_char;
1220 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1221 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1222 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1223 }
1224
1225 if (likely(HTTP_IS_CRLF(*ptr))) {
1226 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1227 goto http_msg_req09_uri_e;
1228 }
1229
1230 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1231 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1232 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1233 state = HTTP_MSG_ERROR;
1234 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1235
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1236 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1237 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1238 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1239 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1240 goto http_msg_rqver;
1241 }
1242 if (likely(HTTP_IS_SPHT(*ptr)))
1243 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1244 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1245 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1246
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1247 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1248 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1249 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1250 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1251
1252 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1253 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1254 http_msg_rqline_eol:
1255 /* We have seen the end of line. Note that we do not
1256 * necessarily have the \n yet, but at least we know that we
1257 * have EITHER \r OR \n, otherwise the request would not be
1258 * complete. We can then record the request length and return
1259 * to the caller which will be able to register it.
1260 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1261 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1262 return ptr;
1263 }
1264
1265 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1266 state = HTTP_MSG_ERROR;
1267 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1268
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1269 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1270#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1271 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1272 exit(1);
1273#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1274 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1275 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1276
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1277 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1278 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1279 if (ret_state)
1280 *ret_state = state;
1281 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1282 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1283 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1284}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1285
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1286/*
1287 * Returns the data from Authorization header. Function may be called more
1288 * than once so data is stored in txn->auth_data. When no header is found
1289 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1290 * searching again for something we are unable to find anyway.
1291 */
1292
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1293char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1294
1295int
1296get_http_auth(struct session *s)
1297{
1298
1299 struct http_txn *txn = &s->txn;
1300 struct chunk auth_method;
1301 struct hdr_ctx ctx;
1302 char *h, *p;
1303 int len;
1304
1305#ifdef DEBUG_AUTH
1306 printf("Auth for session %p: %d\n", s, txn->auth.method);
1307#endif
1308
1309 if (txn->auth.method == HTTP_AUTH_WRONG)
1310 return 0;
1311
1312 if (txn->auth.method)
1313 return 1;
1314
1315 txn->auth.method = HTTP_AUTH_WRONG;
1316
1317 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1318
1319 if (txn->flags & TX_USE_PX_CONN) {
1320 h = "Proxy-Authorization";
1321 len = strlen(h);
1322 } else {
1323 h = "Authorization";
1324 len = strlen(h);
1325 }
1326
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1327 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]1328 return 0;
1329
1330 h = ctx.line + ctx.val;
1331
1332 p = memchr(h, ' ', ctx.vlen);
1333 if (!p || p == h)
1334 return 0;
1335
1336 chunk_initlen(&auth_method, h, 0, p-h);
1337 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1338
1339 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1340
1341 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1342 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1343
1344 if (len < 0)
1345 return 0;
1346
1347
1348 get_http_auth_buff[len] = '\0';
1349
1350 p = strchr(get_http_auth_buff, ':');
1351
1352 if (!p)
1353 return 0;
1354
1355 txn->auth.user = get_http_auth_buff;
1356 *p = '\0';
1357 txn->auth.pass = p+1;
1358
1359 txn->auth.method = HTTP_AUTH_BASIC;
1360 return 1;
1361 }
1362
1363 return 0;
1364}
1365
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1366
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1367/*
1368 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1369 * depending on the initial msg->msg_state. The caller is responsible for
1370 * ensuring that the message does not wrap. The function can be preempted
1371 * everywhere when data are missing and recalled at the exact same location
1372 * with no information loss. The message may even be realigned between two
1373 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1374 * 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]1375 * fields. Note that msg->sol will be initialized after completing the first
1376 * state, so that none of the msg pointers has to be initialized prior to the
1377 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1378 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1379void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1380{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1381 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1382 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1383 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1384
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1385 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1386 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1387 ptr = buf->p + msg->next;
1388 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1389
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1390 if (unlikely(ptr >= end))
1391 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1392
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1393 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1394 /*
1395 * First, states that are specific to the response only.
1396 * We check them first so that request and headers are
1397 * closer to each other (accessed more often).
1398 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1399 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1400 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1401 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1402 /* we have a start of message, but we have to check
1403 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1404 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1405 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1406 if (unlikely(ptr != buf->p)) {
1407 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1408 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1409 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1410 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1411 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1412 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1413 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1414 hdr_idx_init(idx);
1415 state = HTTP_MSG_RPVER;
1416 goto http_msg_rpver;
1417 }
1418
1419 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1420 goto http_msg_invalid;
1421
1422 if (unlikely(*ptr == '\n'))
1423 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1424 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1425 /* stop here */
1426
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1427 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1428 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1429 EXPECT_LF_HERE(ptr, http_msg_invalid);
1430 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1431 /* stop here */
1432
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1433 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1434 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1435 case HTTP_MSG_RPVER_SP:
1436 case HTTP_MSG_RPCODE:
1437 case HTTP_MSG_RPCODE_SP:
1438 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1439 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1440 state, ptr, end,
1441 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1442 if (unlikely(!ptr))
1443 return;
1444
1445 /* we have a full response and we know that we have either a CR
1446 * or an LF at <ptr>.
1447 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1448 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1449
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1450 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1451 if (likely(*ptr == '\r'))
1452 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1453 goto http_msg_rpline_end;
1454
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1455 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1456 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1457 /* msg->sol must point to the first of CR or LF. */
1458 EXPECT_LF_HERE(ptr, http_msg_invalid);
1459 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1460 /* stop here */
1461
1462 /*
1463 * Second, states that are specific to the request only
1464 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1465 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1466 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1467 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1468 /* we have a start of message, but we have to check
1469 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1470 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1471 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1472 if (likely(ptr != buf->p)) {
1473 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1474 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1475 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1476 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1477 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1478 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1479 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1480 state = HTTP_MSG_RQMETH;
1481 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1482 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1483
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1484 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1485 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1486
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1487 if (unlikely(*ptr == '\n'))
1488 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1489 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1490 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1491
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1492 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1493 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1494 EXPECT_LF_HERE(ptr, http_msg_invalid);
1495 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1496 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1497
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1498 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1499 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1500 case HTTP_MSG_RQMETH_SP:
1501 case HTTP_MSG_RQURI:
1502 case HTTP_MSG_RQURI_SP:
1503 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1504 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1505 state, ptr, end,
1506 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1507 if (unlikely(!ptr))
1508 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1509
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1510 /* we have a full request and we know that we have either a CR
1511 * or an LF at <ptr>.
1512 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1513 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1514
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1515 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1516 if (likely(*ptr == '\r'))
1517 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1518 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1519
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1520 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1521 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1522 /* check for HTTP/0.9 request : no version information available.
1523 * msg->sol must point to the first of CR or LF.
1524 */
1525 if (unlikely(msg->sl.rq.v_l == 0))
1526 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1527
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1528 EXPECT_LF_HERE(ptr, http_msg_invalid);
1529 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1530 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1531
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1532 /*
1533 * Common states below
1534 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1535 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1536 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1537 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1538 if (likely(!HTTP_IS_CRLF(*ptr))) {
1539 goto http_msg_hdr_name;
1540 }
1541
1542 if (likely(*ptr == '\r'))
1543 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1544 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1545
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1546 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1547 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1548 /* assumes msg->sol points to the first char */
1549 if (likely(HTTP_IS_TOKEN(*ptr)))
1550 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1551
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1552 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1553 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]1554
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1555 if (likely(msg->err_pos < -1) || *ptr == '\n')
1556 goto http_msg_invalid;
1557
1558 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1559 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1560
1561 /* and we still accept this non-token character */
1562 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1563
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1564 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1565 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1566 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1567 if (likely(HTTP_IS_SPHT(*ptr)))
1568 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]1569
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1570 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1571 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1572
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1573 if (likely(!HTTP_IS_CRLF(*ptr))) {
1574 goto http_msg_hdr_val;
1575 }
1576
1577 if (likely(*ptr == '\r'))
1578 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1579 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1580
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1581 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1582 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1583 EXPECT_LF_HERE(ptr, http_msg_invalid);
1584 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]1585
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1586 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1587 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1588 if (likely(HTTP_IS_SPHT(*ptr))) {
1589 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1590 for (; buf->p + msg->sov < ptr; msg->sov++)
1591 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1592 goto http_msg_hdr_l1_sp;
1593 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1594 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1595 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1596 goto http_msg_complete_header;
1597
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1598 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1599 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1600 /* assumes msg->sol points to the first char, and msg->sov
1601 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1602 */
1603 if (likely(!HTTP_IS_CRLF(*ptr)))
1604 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1605
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1606 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1607 /* Note: we could also copy eol into ->eoh so that we have the
1608 * real header end in case it ends with lots of LWS, but is this
1609 * really needed ?
1610 */
1611 if (likely(*ptr == '\r'))
1612 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1613 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1614
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1615 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1616 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1617 EXPECT_LF_HERE(ptr, http_msg_invalid);
1618 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]1619
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1620 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1621 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1622 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1623 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1624 for (; buf->p + msg->eol < ptr; msg->eol++)
1625 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1626 goto http_msg_hdr_val;
1627 }
1628 http_msg_complete_header:
1629 /*
1630 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1631 * Assumes msg->sol points to the first char, msg->sov points
1632 * to the first character of the value and msg->eol to the
1633 * first CR or LF so we know how the line ends. We insert last
1634 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1635 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1636 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1637 idx, idx->tail) < 0))
1638 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1639
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1640 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1641 if (likely(!HTTP_IS_CRLF(*ptr))) {
1642 goto http_msg_hdr_name;
1643 }
1644
1645 if (likely(*ptr == '\r'))
1646 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1647 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1648
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1649 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1650 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1651 /* Assumes msg->sol points to the first of either CR or LF */
1652 EXPECT_LF_HERE(ptr, http_msg_invalid);
1653 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1654 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1655 msg->eoh = msg->sol;
1656 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1657 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1658 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1659
1660 case HTTP_MSG_ERROR:
1661 /* this may only happen if we call http_msg_analyser() twice with an error */
1662 break;
1663
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1664 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1665#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1666 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1667 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1668#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1669 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1670 }
1671 http_msg_ood:
1672 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1673 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1674 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1675 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1676
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1677 http_msg_invalid:
1678 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1679 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1680 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1681 return;
1682}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1683
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1684/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1685 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1686 * nothing is done and 1 is returned.
1687 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1688static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1689{
1690 int delta;
1691 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1692 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1693
1694 if (msg->sl.rq.v_l != 0)
1695 return 1;
1696
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1697 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1698 delta = 0;
1699
1700 if (msg->sl.rq.u_l == 0) {
1701 /* if no URI was set, add "/" */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1702 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1703 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1704 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1705 }
1706 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1707 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]1708 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1709 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1710 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1711 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1712 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1713 NULL, NULL);
1714 if (unlikely(!cur_end))
1715 return 0;
1716
1717 /* we have a full HTTP/1.0 request now and we know that
1718 * we have either a CR or an LF at <ptr>.
1719 */
1720 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1721 return 1;
1722}
1723
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1724/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1725 * and "keep-alive" values. If we already know that some headers may safely
1726 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1727 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1728 * - 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]1729 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1730 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1731 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1732 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1733 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1734 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1735void 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]1736{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1737 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1738 const char *hdr_val = "Connection";
1739 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1740
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1741 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1742 return;
1743
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1744 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1745 hdr_val = "Proxy-Connection";
1746 hdr_len = 16;
1747 }
1748
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1749 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1750 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1751 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]1752 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1753 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1754 if (to_del & 2)
1755 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1756 else
1757 txn->flags |= TX_CON_KAL_SET;
1758 }
1759 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1760 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1761 if (to_del & 1)
1762 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1763 else
1764 txn->flags |= TX_CON_CLO_SET;
1765 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1766 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1767 txn->flags |= TX_HDR_CONN_UPG;
1768 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1769 }
1770
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1771 txn->flags |= TX_HDR_CONN_PRS;
1772 return;
1773}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1774
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1775/* Apply desired changes on the Connection: header. Values may be removed and/or
1776 * added depending on the <wanted> flags, which are exclusively composed of
1777 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1778 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1779 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1780void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1781{
1782 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1783 const char *hdr_val = "Connection";
1784 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1785
1786 ctx.idx = 0;
1787
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1788
1789 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1790 hdr_val = "Proxy-Connection";
1791 hdr_len = 16;
1792 }
1793
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1794 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1795 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]1796 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1797 if (wanted & TX_CON_KAL_SET)
1798 txn->flags |= TX_CON_KAL_SET;
1799 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1800 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1801 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1802 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1803 if (wanted & TX_CON_CLO_SET)
1804 txn->flags |= TX_CON_CLO_SET;
1805 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1806 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1807 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1808 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1809
1810 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1811 return;
1812
1813 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1814 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1815 hdr_val = "Connection: close";
1816 hdr_len = 17;
1817 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1818 hdr_val = "Proxy-Connection: close";
1819 hdr_len = 23;
1820 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1821 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1822 }
1823
1824 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1825 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1826 hdr_val = "Connection: keep-alive";
1827 hdr_len = 22;
1828 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1829 hdr_val = "Proxy-Connection: keep-alive";
1830 hdr_len = 28;
1831 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1832 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1833 }
1834 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1835}
1836
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1837/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to the
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1838 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1839 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1840 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1841 * 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]1842 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1843static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1844{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1845 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1846 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1847 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1848 const char *end = buf->data + buf->size;
1849 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1850 unsigned int chunk = 0;
1851
1852 /* The chunk size is in the following form, though we are only
1853 * interested in the size and CRLF :
1854 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1855 */
1856 while (1) {
1857 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1858 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1859 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1860 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1861 if (c < 0) /* not a hex digit anymore */
1862 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1863 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1864 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1865 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1866 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1867 chunk = (chunk << 4) + c;
1868 }
1869
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1870 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1871 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1872 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1873
1874 while (http_is_spht[(unsigned char)*ptr]) {
1875 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1876 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1877 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1878 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1879 }
1880
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1881 /* Up to there, we know that at least one byte is present at *ptr. Check
1882 * for the end of chunk size.
1883 */
1884 while (1) {
1885 if (likely(HTTP_IS_CRLF(*ptr))) {
1886 /* we now have a CR or an LF at ptr */
1887 if (likely(*ptr == '\r')) {
1888 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1889 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1890 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1891 return 0;
1892 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1893
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1894 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1895 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1896 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1897 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1898 /* done */
1899 break;
1900 }
1901 else if (*ptr == ';') {
1902 /* chunk extension, ends at next CRLF */
1903 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1904 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1905 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1906 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1907
1908 while (!HTTP_IS_CRLF(*ptr)) {
1909 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1910 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1911 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1912 return 0;
1913 }
1914 /* we have a CRLF now, loop above */
1915 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1916 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1917 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1918 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1919 }
1920
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1921 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1922 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1923 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1924 */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1925 if (unlikely(ptr < ptr_old))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1926 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1927 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1928 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1929 msg->chunk_len = chunk;
1930 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1931 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1932 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1933 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1934 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1935 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1936}
1937
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1938/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1939 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1940 * the trailers is found, it is automatically scheduled to be forwarded,
1941 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1942 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1943 * except maybe msg->next and msg->sov if it could parse some lines, and returns
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1944 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1945 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1946 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1947 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1948 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1949 * matches the length of trailers already parsed and not forwarded. It is also
1950 * important to note that this function is designed to be able to parse wrapped
1951 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1952 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1953static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1954{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1955 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1956
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1957 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1958 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1959 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1960 const char *ptr = b_ptr(buf, msg->next);
1961 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1962 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1963
1964 /* scan current line and stop at LF or CRLF */
1965 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1966 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1967 return 0;
1968
1969 if (*ptr == '\n') {
1970 if (!p1)
1971 p1 = ptr;
1972 p2 = ptr;
1973 break;
1974 }
1975
1976 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1977 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1978 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1979 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1980 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1981 p1 = ptr;
1982 }
1983
1984 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1985 if (ptr >= buf->data + buf->size)
1986 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1987 }
1988
1989 /* after LF; point to beginning of next line */
1990 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1991 if (p2 >= buf->data + buf->size)
1992 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1993
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1994 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1995 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1996 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1997
1998 /* schedule this line for forwarding */
1999 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2000 if (msg->sov >= buf->size)
2001 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2002
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2003 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2004 /* LF/CRLF at beginning of line => end of trailers at p2.
2005 * Everything was scheduled for forwarding, there's nothing
2006 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]2007 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2008 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2009 msg->msg_state = HTTP_MSG_DONE;
2010 return 1;
2011 }
2012 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2013 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2014 }
2015}
2016
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]2017/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2018 * a possible LF alone at the end of a chunk. It automatically adjusts msg->sov,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2019 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2020 * 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]2021 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
2022 * not enough data are available, the function does not change anything and
2023 * returns zero. If a parse error is encountered, the function returns < 0 and
2024 * does not change anything. Note: this function is designed to parse wrapped
2025 * CRLF at the end of the buffer.
2026 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2027static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2028{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2029 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2030 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2031 int bytes;
2032
2033 /* NB: we'll check data availabilty at the end. It's not a
2034 * problem because whatever we match first will be checked
2035 * against the correct length.
2036 */
2037 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2038 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2039 if (*ptr == '\r') {
2040 bytes++;
2041 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2042 if (ptr >= buf->data + buf->size)
2043 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2044 }
2045
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2046 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2047 return 0;
2048
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2049 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2050 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2051 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2052 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2053
2054 ptr++;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2055 if (unlikely(ptr >= buf->data + buf->size))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2056 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2057 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
2058 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]2059 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2060 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
2061 return 1;
2062}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2063
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2064
2065/*
2066 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2067 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2068int select_compression_request_header(struct session *s, struct buffer *req)
2069{
2070 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2071 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2072 struct hdr_ctx ctx;
2073 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2074 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2075
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2076 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
2077 * 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]2078 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
2079 */
2080 ctx.idx = 0;
2081 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
2082 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2083 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
2084 (ctx.vlen < 31 ||
2085 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
2086 ctx.line[ctx.val + 30] < '6' ||
2087 (ctx.line[ctx.val + 30] == '6' &&
2088 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
2089 s->comp_algo = NULL;
2090 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2091 }
2092
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2093 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2094 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2095 ctx.idx = 0;
2096 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2097 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2098 if (word_match(ctx.line + ctx.val, ctx.vlen, comp_algo->name, comp_algo->name_len)) {
2099 s->comp_algo = comp_algo;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2100
2101 /* remove all occurrences of the header when "compression offload" is set */
2102
2103 if ((s->be->comp && s->be->comp->offload) ||
2104 (s->fe->comp && s->fe->comp->offload)) {
2105 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2106 ctx.idx = 0;
2107 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2108 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2109 }
2110 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2111 return 1;
2112 }
2113 }
2114 }
2115 }
2116
2117 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2118 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2119 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2120 if (comp_algo->add_data == identity_add_data) {
2121 s->comp_algo = comp_algo;
2122 return 1;
2123 }
2124 }
2125 }
2126
2127 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2128 return 0;
2129}
2130
2131/*
2132 * Selects a comression algorithm depending of the server response.
2133 */
2134int select_compression_response_header(struct session *s, struct buffer *res)
2135{
2136 struct http_txn *txn = &s->txn;
2137 struct http_msg *msg = &txn->rsp;
2138 struct hdr_ctx ctx;
2139 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2140
2141 /* no common compression algorithm was found in request header */
2142 if (s->comp_algo == NULL)
2143 goto fail;
2144
2145 /* HTTP < 1.1 should not be compressed */
2146 if (!(msg->flags & HTTP_MSGF_VER_11))
2147 goto fail;
2148
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2149 /* 200 only */
2150 if (txn->status != 200)
2151 goto fail;
2152
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2153 /* Content-Length is null */
2154 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2155 goto fail;
2156
Willy Tarreau667c2a32013-04-09 08:13:58 +0200[diff] [blame]2157 /* TEMPORARY WORKAROUND: do not compress if response is chunked !!!!!! */
2158 if (msg->flags & HTTP_MSGF_TE_CHNK)
2159 goto fail;
2160
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2161 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2162 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2163 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2164 goto fail;
2165
Willy Tarreau56e9ffa2013-01-05 16:20:35 +0100[diff] [blame]2166 /* no compression when Cache-Control: no-transform is present in the message */
2167 ctx.idx = 0;
2168 while (http_find_header2("Cache-Control", 13, res->p, &txn->hdr_idx, &ctx)) {
2169 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12))
2170 goto fail;
2171 }
2172
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2173 comp_type = NULL;
2174
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2175 /* we don't want to compress multipart content-types, nor content-types that are
2176 * not listed in the "compression type" directive if any. If no content-type was
2177 * found but configuration requires one, we don't compress either. Backend has
2178 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2179 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2180 ctx.idx = 0;
2181 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2182 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2183 goto fail;
2184
2185 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
2186 (s->fe->comp && (comp_type = s->fe->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2187 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2188 if (ctx.vlen >= comp_type->name_len &&
2189 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2190 /* this Content-Type should be compressed */
2191 break;
2192 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2193 /* this Content-Type should not be compressed */
2194 if (comp_type == NULL)
2195 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2196 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2197 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2198 else { /* no content-type header */
2199 if ((s->be->comp && s->be->comp->types) || (s->fe->comp && s->fe->comp->types))
2200 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2201 }
2202
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2203 /* limit compression rate */
2204 if (global.comp_rate_lim > 0)
2205 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2206 goto fail;
2207
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2208 /* limit cpu usage */
2209 if (idle_pct < compress_min_idle)
2210 goto fail;
2211
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2212 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2213 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2214 goto fail;
2215
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2216 s->flags |= SN_COMP_READY;
2217
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2218 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2219 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2220 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2221 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2222
2223 /* add Transfer-Encoding header */
2224 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2225 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2226
2227 /*
2228 * Add Content-Encoding header when it's not identity encoding.
2229 * RFC 2616 : Identity encoding: This content-coding is used only in the
2230 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2231 * header.
2232 */
2233 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2234 trash.len = 18;
2235 memcpy(trash.str, "Content-Encoding: ", trash.len);
2236 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2237 trash.len += s->comp_algo->name_len;
2238 trash.str[trash.len] = '\0';
2239 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2240 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2241 return 1;
2242
2243fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2244 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2245 return 0;
2246}
2247
2248
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2249/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2250 * processing can continue on next analysers, or zero if it either needs more
2251 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2252 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2253 * when it has nothing left to do, and may remove any analyser when it wants to
2254 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2255 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2256int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2257{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2258 /*
2259 * We will parse the partial (or complete) lines.
2260 * We will check the request syntax, and also join multi-line
2261 * headers. An index of all the lines will be elaborated while
2262 * parsing.
2263 *
2264 * For the parsing, we use a 28 states FSM.
2265 *
2266 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2267 * req->buf->p = beginning of request
2268 * req->buf->p + msg->eoh = end of processed headers / start of current one
2269 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2270 * msg->eol = end of current header or line (LF or CRLF)
2271 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2272 *
2273 * At end of parsing, we may perform a capture of the error (if any), and
2274 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2275 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2276 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2277 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2278
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2279 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2280 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2281 struct http_txn *txn = &s->txn;
2282 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2283 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2284
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2285 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]2286 now_ms, __FUNCTION__,
2287 s,
2288 req,
2289 req->rex, req->wex,
2290 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2291 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2292 req->analysers);
2293
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2294 /* we're speaking HTTP here, so let's speak HTTP to the client */
2295 s->srv_error = http_return_srv_error;
2296
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2297 /* There's a protected area at the end of the buffer for rewriting
2298 * purposes. We don't want to start to parse the request if the
2299 * protected area is affected, because we may have to move processed
2300 * data later, which is much more complicated.
2301 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2302 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2303 if (txn->flags & TX_NOT_FIRST) {
2304 if (unlikely(!channel_reserved(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2305 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2306 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2307 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2308 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2309 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2310 return 0;
2311 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2312 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2313 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2314 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2315 }
2316
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2317 /* Note that we have the same problem with the response ; we
2318 * may want to send a redirect, error or anything which requires
2319 * some spare space. So we'll ensure that we have at least
2320 * maxrewrite bytes available in the response buffer before
2321 * processing that one. This will only affect pipelined
2322 * keep-alive requests.
2323 */
2324 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2325 unlikely(!channel_reserved(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2326 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2327 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2328 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2329 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]2330 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2331 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2332 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2333 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2334 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2335 return 0;
2336 }
2337 }
2338
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2339 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2340 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2341 }
2342
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2343 /* 1: we might have to print this header in debug mode */
2344 if (unlikely((global.mode & MODE_DEBUG) &&
2345 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2346 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2347 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2348
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2349 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2350 /* this is a bit complex : in case of error on the request line,
2351 * we know that rq.l is still zero, so we display only the part
2352 * up to the end of the line (truncated by debug_hdr).
2353 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2354 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2355 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2356
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2357 sol += hdr_idx_first_pos(&txn->hdr_idx);
2358 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2359
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2360 while (cur_idx) {
2361 eol = sol + txn->hdr_idx.v[cur_idx].len;
2362 debug_hdr("clihdr", s, sol, eol);
2363 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2364 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2365 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2366 }
2367
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2368
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2369 /*
2370 * Now we quickly check if we have found a full valid request.
2371 * If not so, we check the FD and buffer states before leaving.
2372 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2373 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2374 * requests are checked first. When waiting for a second request
2375 * on a keep-alive session, if we encounter and error, close, t/o,
2376 * we note the error in the session flags but don't set any state.
2377 * Since the error will be noted there, it will not be counted by
2378 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2379 * Last, we may increase some tracked counters' http request errors on
2380 * the cases that are deliberately the client's fault. For instance,
2381 * a timeout or connection reset is not counted as an error. However
2382 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2383 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2384
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2385 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2386 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2387 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2388 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2389 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2390 session_inc_http_req_ctr(s);
2391 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2392 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2393 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2394 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2395
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2396 /* 1: Since we are in header mode, if there's no space
2397 * left for headers, we won't be able to free more
2398 * later, so the session will never terminate. We
2399 * must terminate it now.
2400 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2401 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2402 /* FIXME: check if URI is set and return Status
2403 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2404 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2405 session_inc_http_req_ctr(s);
2406 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2407 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2408 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2409 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2410 goto return_bad_req;
2411 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2412
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2413 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2414 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2415 if (!(s->flags & SN_ERR_MASK))
2416 s->flags |= SN_ERR_CLICL;
2417
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2418 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2419 goto failed_keep_alive;
2420
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2421 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2422 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2423 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]2424 session_inc_http_err_ctr(s);
2425 }
2426
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2427 txn->status = 400;
2428 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2429 msg->msg_state = HTTP_MSG_ERROR;
2430 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2431
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2432 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2433 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2434 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2435 if (s->listener->counters)
2436 s->listener->counters->failed_req++;
2437
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2438 if (!(s->flags & SN_FINST_MASK))
2439 s->flags |= SN_FINST_R;
2440 return 0;
2441 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2442
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2443 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2444 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]2445 if (!(s->flags & SN_ERR_MASK))
2446 s->flags |= SN_ERR_CLITO;
2447
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2448 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2449 goto failed_keep_alive;
2450
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2451 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2452 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2453 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]2454 session_inc_http_err_ctr(s);
2455 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2456 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2457 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2458 msg->msg_state = HTTP_MSG_ERROR;
2459 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2460
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2461 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2462 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2463 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2464 if (s->listener->counters)
2465 s->listener->counters->failed_req++;
2466
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2467 if (!(s->flags & SN_FINST_MASK))
2468 s->flags |= SN_FINST_R;
2469 return 0;
2470 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2471
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2472 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2473 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2474 if (!(s->flags & SN_ERR_MASK))
2475 s->flags |= SN_ERR_CLICL;
2476
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2477 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2478 goto failed_keep_alive;
2479
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2480 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2481 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]2482 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2483 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2484 msg->msg_state = HTTP_MSG_ERROR;
2485 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2486
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2487 session_inc_http_err_ctr(s);
2488 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2489 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2490 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2491 if (s->listener->counters)
2492 s->listener->counters->failed_req++;
2493
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2494 if (!(s->flags & SN_FINST_MASK))
2495 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2496 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2497 }
2498
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2499 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2500 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2501 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2502#ifdef TCP_QUICKACK
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]2503 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i && objt_conn(s->req->prod->end) && (__objt_conn(s->req->prod->end)->flags & CO_FL_CTRL_READY)) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2504 /* We need more data, we have to re-enable quick-ack in case we
2505 * previously disabled it, otherwise we might cause the client
2506 * to delay next data.
2507 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2508 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]2509 }
2510#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2511
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2512 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2513 /* If the client starts to talk, let's fall back to
2514 * request timeout processing.
2515 */
2516 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2517 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2518 }
2519
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2520 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2521 if (!tick_isset(req->analyse_exp)) {
2522 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2523 (txn->flags & TX_WAIT_NEXT_RQ) &&
2524 tick_isset(s->be->timeout.httpka))
2525 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2526 else
2527 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2528 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2529
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2530 /* we're not ready yet */
2531 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2532
2533 failed_keep_alive:
2534 /* Here we process low-level errors for keep-alive requests. In
2535 * short, if the request is not the first one and it experiences
2536 * a timeout, read error or shutdown, we just silently close so
2537 * that the client can try again.
2538 */
2539 txn->status = 0;
2540 msg->msg_state = HTTP_MSG_RQBEFORE;
2541 req->analysers = 0;
2542 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2543 s->logs.level = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2544 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2545 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2546 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2547 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2548
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2549 /* OK now we have a complete HTTP request with indexed headers. Let's
2550 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2551 * 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]2552 * 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]2553 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2554 * byte after the last LF. msg->sov points to the first byte of data.
2555 * msg->eol cannot be trusted because it may have been left uninitialized
2556 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2557 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2558
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2559 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2560 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2561
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2562 if (txn->flags & TX_WAIT_NEXT_RQ) {
2563 /* kill the pending keep-alive timeout */
2564 txn->flags &= ~TX_WAIT_NEXT_RQ;
2565 req->analyse_exp = TICK_ETERNITY;
2566 }
2567
2568
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2569 /* Maybe we found in invalid header name while we were configured not
2570 * to block on that, so we have to capture it now.
2571 */
2572 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2573 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]2574
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2575 /*
2576 * 1: identify the method
2577 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2578 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2579
2580 /* we can make use of server redirect on GET and HEAD */
2581 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2582 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2583
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2584 /*
2585 * 2: check if the URI matches the monitor_uri.
2586 * We have to do this for every request which gets in, because
2587 * the monitor-uri is defined by the frontend.
2588 */
2589 if (unlikely((s->fe->monitor_uri_len != 0) &&
2590 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2591 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2592 s->fe->monitor_uri,
2593 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2594 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2595 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2596 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2597 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2598
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2599 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2600 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2601
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2602 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2603 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2604 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]2605
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2606 ret = acl_pass(ret);
2607 if (cond->pol == ACL_COND_UNLESS)
2608 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2609
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2610 if (ret) {
2611 /* we fail this request, let's return 503 service unavail */
2612 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2613 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2614 if (!(s->flags & SN_ERR_MASK))
2615 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2616 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2617 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2618 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2619
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2620 /* nothing to fail, let's reply normaly */
2621 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2622 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2623 if (!(s->flags & SN_ERR_MASK))
2624 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2625 goto return_prx_cond;
2626 }
2627
2628 /*
2629 * 3: Maybe we have to copy the original REQURI for the logs ?
2630 * Note: we cannot log anymore if the request has been
2631 * classified as invalid.
2632 */
2633 if (unlikely(s->logs.logwait & LW_REQ)) {
2634 /* we have a complete HTTP request that we must log */
2635 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2636 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2637
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2638 if (urilen >= REQURI_LEN)
2639 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2640 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2641 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2642
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2643 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2644 s->do_log(s);
2645 } else {
2646 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2647 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2648 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2649
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2650 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2651 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2652 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2653
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2654 /* ... and check if the request is HTTP/1.1 or above */
2655 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2656 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2657 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2658 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2659 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2660
2661 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2662 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]2663
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2664 /* if the frontend has "option http-use-proxy-header", we'll check if
2665 * we have what looks like a proxied connection instead of a connection,
2666 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2667 * Note that this is *not* RFC-compliant, however browsers and proxies
2668 * happen to do that despite being non-standard :-(
2669 * We consider that a request not beginning with either '/' or '*' is
2670 * a proxied connection, which covers both "scheme://location" and
2671 * CONNECT ip:port.
2672 */
2673 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2674 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2675 txn->flags |= TX_USE_PX_CONN;
2676
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2677 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2678 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2679
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2680 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2681 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2682 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2683 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2684
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2685 /* 6: determine the transfer-length.
2686 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2687 * the presence of a message-body in a REQUEST and its transfer length
2688 * must be determined that way (in order of precedence) :
2689 * 1. The presence of a message-body in a request is signaled by the
2690 * inclusion of a Content-Length or Transfer-Encoding header field
2691 * in the request's header fields. When a request message contains
2692 * both a message-body of non-zero length and a method that does
2693 * not define any semantics for that request message-body, then an
2694 * origin server SHOULD either ignore the message-body or respond
2695 * with an appropriate error message (e.g., 413). A proxy or
2696 * gateway, when presented the same request, SHOULD either forward
2697 * the request inbound with the message- body or ignore the
2698 * message-body when determining a response.
2699 *
2700 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2701 * and the "chunked" transfer-coding (Section 6.2) is used, the
2702 * transfer-length is defined by the use of this transfer-coding.
2703 * If a Transfer-Encoding header field is present and the "chunked"
2704 * transfer-coding is not present, the transfer-length is defined
2705 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2706 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2707 * 3. If a Content-Length header field is present, its decimal value in
2708 * OCTETs represents both the entity-length and the transfer-length.
2709 * If a message is received with both a Transfer-Encoding header
2710 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2711 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2712 * 4. By the server closing the connection. (Closing the connection
2713 * cannot be used to indicate the end of a request body, since that
2714 * would leave no possibility for the server to send back a response.)
2715 *
2716 * Whenever a transfer-coding is applied to a message-body, the set of
2717 * transfer-codings MUST include "chunked", unless the message indicates
2718 * it is terminated by closing the connection. When the "chunked"
2719 * transfer-coding is used, it MUST be the last transfer-coding applied
2720 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2721 */
2722
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2723 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2724 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2725 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2726 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2727 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2728 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2729 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2730 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2731 /* bad transfer-encoding (chunked followed by something else) */
2732 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2733 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2734 break;
2735 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2736 }
2737
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2738 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2739 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2740 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2741 signed long long cl;
2742
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2743 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2744 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2745 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2746 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2747
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2748 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2749 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2750 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2751 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2752
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2753 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2754 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2755 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2756 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2757
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2758 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2759 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2760 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2761 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2762
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2763 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2764 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2765 }
2766
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2767 /* bodyless requests have a known length */
2768 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2769 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2770
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2771 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2772 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2773 req->analyse_exp = TICK_ETERNITY;
2774 return 1;
2775
2776 return_bad_req:
2777 /* We centralize bad requests processing here */
2778 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2779 /* we detected a parsing error. We want to archive this request
2780 * in the dedicated proxy area for later troubleshooting.
2781 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2782 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]2783 }
2784
2785 txn->req.msg_state = HTTP_MSG_ERROR;
2786 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2787 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2788
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2789 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2790 if (s->listener->counters)
2791 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2792
2793 return_prx_cond:
2794 if (!(s->flags & SN_ERR_MASK))
2795 s->flags |= SN_ERR_PRXCOND;
2796 if (!(s->flags & SN_FINST_MASK))
2797 s->flags |= SN_FINST_R;
2798
2799 req->analysers = 0;
2800 req->analyse_exp = TICK_ETERNITY;
2801 return 0;
2802}
2803
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2804
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2805/* This function prepares an applet to handle the stats. It can deal with the
2806 * "100-continue" expectation, check that admin rules are met for POST requests,
2807 * and program a response message if something was unexpected. It cannot fail
2808 * 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]2809 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2810 * s->target which is supposed to already point to the stats applet. The caller
2811 * is expected to have already assigned an appctx to the session.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2812 */
2813int http_handle_stats(struct session *s, struct channel *req)
2814{
2815 struct stats_admin_rule *stats_admin_rule;
2816 struct stream_interface *si = s->rep->prod;
2817 struct http_txn *txn = &s->txn;
2818 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2819 struct uri_auth *uri_auth = s->be->uri_auth;
2820 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2821 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2822
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2823 appctx = si_appctx(si);
2824 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
2825 appctx->st1 = appctx->st2 = 0;
2826 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
2827 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2828
2829 uri = msg->chn->buf->p + msg->sl.rq.u;
2830 lookup = uri + uri_auth->uri_len;
2831
2832 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
2833 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2834 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2835 break;
2836 }
2837 }
2838
2839 if (uri_auth->refresh) {
2840 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
2841 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2842 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2843 break;
2844 }
2845 }
2846 }
2847
2848 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
2849 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2850 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2851 break;
2852 }
2853 }
2854
2855 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
2856 if (memcmp(h, ";st=", 4) == 0) {
2857 int i;
2858 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2859 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2860 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
2861 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2862 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2863 break;
2864 }
2865 }
2866 break;
2867 }
2868 }
2869
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2870 appctx->ctx.stats.scope_str = 0;
2871 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2872 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
2873 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
2874 int itx = 0;
2875 const char *h2;
2876 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
2877 const char *err;
2878
2879 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
2880 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2881 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2882 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
2883 itx++;
2884 h++;
2885 }
2886
2887 if (itx > STAT_SCOPE_TXT_MAXLEN)
2888 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2889 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2890
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2891 /* 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]2892 memcpy(scope_txt, h2, itx);
2893 scope_txt[itx] = '\0';
2894 err = invalid_char(scope_txt);
2895 if (err) {
2896 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2897 appctx->ctx.stats.scope_str = 0;
2898 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2899 }
2900 break;
2901 }
2902 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2903
2904 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2905 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2906 int ret = 1;
2907
2908 if (stats_admin_rule->cond) {
2909 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
2910 ret = acl_pass(ret);
2911 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
2912 ret = !ret;
2913 }
2914
2915 if (ret) {
2916 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2917 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2918 break;
2919 }
2920 }
2921
2922 /* Was the status page requested with a POST ? */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2923 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2924 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2925 if (msg->msg_state < HTTP_MSG_100_SENT) {
2926 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
2927 * send an HTTP/1.1 100 Continue intermediate response.
2928 */
2929 if (msg->flags & HTTP_MSGF_VER_11) {
2930 struct hdr_ctx ctx;
2931 ctx.idx = 0;
2932 /* Expect is allowed in 1.1, look for it */
2933 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
2934 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
2935 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
2936 }
2937 }
2938 msg->msg_state = HTTP_MSG_100_SENT;
2939 s->logs.tv_request = now; /* update the request timer to reflect full request */
2940 }
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2941 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2942 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2943 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2944 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
2945 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]2946 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2947 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2948 else {
2949 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2950 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2951 }
2952
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2953 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2954 return 1;
2955}
2956
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]2957/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
2958 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
2959 */
2960static inline void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
2961{
2962#ifdef IP_TOS
2963 if (from.ss_family == AF_INET)
2964 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
2965#endif
2966#ifdef IPV6_TCLASS
2967 if (from.ss_family == AF_INET6) {
2968 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
2969 /* v4-mapped addresses need IP_TOS */
2970 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
2971 else
2972 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
2973 }
2974#endif
2975}
2976
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2977/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2978 * transaction <txn>. Returns the first rule that prevents further processing
2979 * of the request (auth, deny, ...) or NULL if it executed all rules or stopped
2980 * on an allow. It may set the TX_CLDENY on txn->flags if it encounters a deny
2981 * rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2982 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2983static struct http_req_rule *
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2984http_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]2985{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2986 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2987 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2988 struct hdr_ctx ctx;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2989
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2990 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2991 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2992 continue;
2993
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2994 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2995 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2996 int ret;
2997
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2998 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]2999 ret = acl_pass(ret);
3000
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3001 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3002 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3003
3004 if (!ret) /* condition not matched */
3005 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3006 }
3007
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3008
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3009 switch (rule->action) {
3010 case HTTP_REQ_ACT_ALLOW:
3011 return NULL; /* "allow" rules are OK */
3012
3013 case HTTP_REQ_ACT_DENY:
3014 txn->flags |= TX_CLDENY;
3015 return rule;
3016
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3017 case HTTP_REQ_ACT_TARPIT:
3018 txn->flags |= TX_CLTARPIT;
3019 return rule;
3020
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3021 case HTTP_REQ_ACT_AUTH:
3022 return rule;
3023
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3024 case HTTP_REQ_ACT_REDIR:
3025 return rule;
3026
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3027 case HTTP_REQ_ACT_SET_NICE:
3028 s->task->nice = rule->arg.nice;
3029 break;
3030
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3031 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3032 if ((cli_conn = objt_conn(s->req->prod->end)) && (cli_conn->flags & CO_FL_CTRL_READY))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3033 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]3034 break;
3035
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3036 case HTTP_REQ_ACT_SET_MARK:
3037#ifdef SO_MARK
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3038 if ((cli_conn = objt_conn(s->req->prod->end)) && (cli_conn->flags & CO_FL_CTRL_READY))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3039 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]3040#endif
3041 break;
3042
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3043 case HTTP_REQ_ACT_SET_LOGL:
3044 s->logs.level = rule->arg.loglevel;
3045 break;
3046
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3047 case HTTP_REQ_ACT_SET_HDR:
3048 ctx.idx = 0;
3049 /* remove all occurrences of the header */
3050 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3051 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3052 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3053 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3054 /* now fall through to header addition */
3055
3056 case HTTP_REQ_ACT_ADD_HDR:
3057 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3058 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3059 trash.len = rule->arg.hdr_add.name_len;
3060 trash.str[trash.len++] = ':';
3061 trash.str[trash.len++] = ' ';
3062 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3063 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3064 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3065 }
3066 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3067
3068 /* we reached the end of the rules, nothing to report */
Willy Tarreau418c1a02012-12-25 20:52:58 +0100[diff] [blame]3069 return NULL;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3070}
3071
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3072
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3073/* Executes the http-response rules <rules> for session <s>, proxy <px> and
3074 * transaction <txn>. Returns the first rule that prevents further processing
3075 * of the response (deny, ...) or NULL if it executed all rules or stopped
3076 * on an allow. It may set the TX_SVDENY on txn->flags if it encounters a deny
3077 * rule.
3078 */
3079static struct http_res_rule *
3080http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3081{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3082 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3083 struct http_res_rule *rule;
3084 struct hdr_ctx ctx;
3085
3086 list_for_each_entry(rule, rules, list) {
3087 if (rule->action >= HTTP_RES_ACT_MAX)
3088 continue;
3089
3090 /* check optional condition */
3091 if (rule->cond) {
3092 int ret;
3093
3094 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
3095 ret = acl_pass(ret);
3096
3097 if (rule->cond->pol == ACL_COND_UNLESS)
3098 ret = !ret;
3099
3100 if (!ret) /* condition not matched */
3101 continue;
3102 }
3103
3104
3105 switch (rule->action) {
3106 case HTTP_RES_ACT_ALLOW:
3107 return NULL; /* "allow" rules are OK */
3108
3109 case HTTP_RES_ACT_DENY:
3110 txn->flags |= TX_SVDENY;
3111 return rule;
3112
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3113 case HTTP_RES_ACT_SET_NICE:
3114 s->task->nice = rule->arg.nice;
3115 break;
3116
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3117 case HTTP_RES_ACT_SET_TOS:
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3118 if ((cli_conn = objt_conn(s->req->prod->end)) && (cli_conn->flags & CO_FL_CTRL_READY))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3119 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]3120 break;
3121
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3122 case HTTP_RES_ACT_SET_MARK:
3123#ifdef SO_MARK
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3124 if ((cli_conn = objt_conn(s->req->prod->end)) && (cli_conn->flags & CO_FL_CTRL_READY))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3125 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]3126#endif
3127 break;
3128
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3129 case HTTP_RES_ACT_SET_LOGL:
3130 s->logs.level = rule->arg.loglevel;
3131 break;
3132
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3133 case HTTP_RES_ACT_SET_HDR:
3134 ctx.idx = 0;
3135 /* remove all occurrences of the header */
3136 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3137 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3138 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3139 }
3140 /* now fall through to header addition */
3141
3142 case HTTP_RES_ACT_ADD_HDR:
3143 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3144 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3145 trash.len = rule->arg.hdr_add.name_len;
3146 trash.str[trash.len++] = ':';
3147 trash.str[trash.len++] = ' ';
3148 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3149 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3150 break;
3151 }
3152 }
3153
3154 /* we reached the end of the rules, nothing to report */
3155 return NULL;
3156}
3157
3158
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3159/* Perform an HTTP redirect based on the information in <rule>. The function
3160 * returns non-zero on success, or zero in case of a, irrecoverable error such
3161 * as too large a request to build a valid response.
3162 */
3163static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3164{
3165 struct http_msg *msg = &txn->req;
3166 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3167 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3168
3169 /* build redirect message */
3170 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3171 case 308:
3172 msg_fmt = HTTP_308;
3173 break;
3174 case 307:
3175 msg_fmt = HTTP_307;
3176 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3177 case 303:
3178 msg_fmt = HTTP_303;
3179 break;
3180 case 301:
3181 msg_fmt = HTTP_301;
3182 break;
3183 case 302:
3184 default:
3185 msg_fmt = HTTP_302;
3186 break;
3187 }
3188
3189 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3190 return 0;
3191
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3192 location = trash.str + trash.len;
3193
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3194 switch(rule->type) {
3195 case REDIRECT_TYPE_SCHEME: {
3196 const char *path;
3197 const char *host;
3198 struct hdr_ctx ctx;
3199 int pathlen;
3200 int hostlen;
3201
3202 host = "";
3203 hostlen = 0;
3204 ctx.idx = 0;
3205 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
3206 host = ctx.line + ctx.val;
3207 hostlen = ctx.vlen;
3208 }
3209
3210 path = http_get_path(txn);
3211 /* build message using path */
3212 if (path) {
3213 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3214 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3215 int qs = 0;
3216 while (qs < pathlen) {
3217 if (path[qs] == '?') {
3218 pathlen = qs;
3219 break;
3220 }
3221 qs++;
3222 }
3223 }
3224 } else {
3225 path = "/";
3226 pathlen = 1;
3227 }
3228
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3229 if (rule->rdr_str) { /* this is an old "redirect" rule */
3230 /* check if we can add scheme + "://" + host + path */
3231 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3232 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3233
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3234 /* add scheme */
3235 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3236 trash.len += rule->rdr_len;
3237 }
3238 else {
3239 /* add scheme with executing log format */
3240 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]3241
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3242 /* check if we can add scheme + "://" + host + path */
3243 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3244 return 0;
3245 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3246 /* add "://" */
3247 memcpy(trash.str + trash.len, "://", 3);
3248 trash.len += 3;
3249
3250 /* add host */
3251 memcpy(trash.str + trash.len, host, hostlen);
3252 trash.len += hostlen;
3253
3254 /* add path */
3255 memcpy(trash.str + trash.len, path, pathlen);
3256 trash.len += pathlen;
3257
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3258 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3259 if (trash.len && trash.str[trash.len - 1] != '/' &&
3260 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3261 if (trash.len > trash.size - 5)
3262 return 0;
3263 trash.str[trash.len] = '/';
3264 trash.len++;
3265 }
3266
3267 break;
3268 }
3269 case REDIRECT_TYPE_PREFIX: {
3270 const char *path;
3271 int pathlen;
3272
3273 path = http_get_path(txn);
3274 /* build message using path */
3275 if (path) {
3276 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3277 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3278 int qs = 0;
3279 while (qs < pathlen) {
3280 if (path[qs] == '?') {
3281 pathlen = qs;
3282 break;
3283 }
3284 qs++;
3285 }
3286 }
3287 } else {
3288 path = "/";
3289 pathlen = 1;
3290 }
3291
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3292 if (rule->rdr_str) { /* this is an old "redirect" rule */
3293 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3294 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3295
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3296 /* add prefix. Note that if prefix == "/", we don't want to
3297 * add anything, otherwise it makes it hard for the user to
3298 * configure a self-redirection.
3299 */
3300 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3301 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3302 trash.len += rule->rdr_len;
3303 }
3304 }
3305 else {
3306 /* add prefix with executing log format */
3307 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3308
3309 /* Check length */
3310 if (trash.len + pathlen > trash.size - 4)
3311 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3312 }
3313
3314 /* add path */
3315 memcpy(trash.str + trash.len, path, pathlen);
3316 trash.len += pathlen;
3317
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3318 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3319 if (trash.len && trash.str[trash.len - 1] != '/' &&
3320 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3321 if (trash.len > trash.size - 5)
3322 return 0;
3323 trash.str[trash.len] = '/';
3324 trash.len++;
3325 }
3326
3327 break;
3328 }
3329 case REDIRECT_TYPE_LOCATION:
3330 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3331 if (rule->rdr_str) { /* this is an old "redirect" rule */
3332 if (trash.len + rule->rdr_len > trash.size - 4)
3333 return 0;
3334
3335 /* add location */
3336 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3337 trash.len += rule->rdr_len;
3338 }
3339 else {
3340 /* add location with executing log format */
3341 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]3342
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3343 /* Check left length */
3344 if (trash.len > trash.size - 4)
3345 return 0;
3346 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3347 break;
3348 }
3349
3350 if (rule->cookie_len) {
3351 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3352 trash.len += 14;
3353 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3354 trash.len += rule->cookie_len;
3355 memcpy(trash.str + trash.len, "\r\n", 2);
3356 trash.len += 2;
3357 }
3358
3359 /* add end of headers and the keep-alive/close status.
3360 * We may choose to set keep-alive if the Location begins
3361 * with a slash, because the client will come back to the
3362 * same server.
3363 */
3364 txn->status = rule->code;
3365 /* let's log the request time */
3366 s->logs.tv_request = now;
3367
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3368 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3369 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3370 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3371 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3372 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3373 /* keep-alive possible */
3374 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3375 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3376 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3377 trash.len += 30;
3378 } else {
3379 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3380 trash.len += 24;
3381 }
3382 }
3383 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3384 trash.len += 4;
3385 bo_inject(txn->rsp.chn, trash.str, trash.len);
3386 /* "eat" the request */
3387 bi_fast_delete(txn->req.chn->buf, msg->sov);
3388 msg->sov = 0;
3389 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3390 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3391 txn->req.msg_state = HTTP_MSG_CLOSED;
3392 txn->rsp.msg_state = HTTP_MSG_DONE;
3393 } else {
3394 /* keep-alive not possible */
3395 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3396 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3397 trash.len += 29;
3398 } else {
3399 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3400 trash.len += 23;
3401 }
3402 stream_int_retnclose(txn->req.chn->prod, &trash);
3403 txn->req.chn->analysers = 0;
3404 }
3405
3406 if (!(s->flags & SN_ERR_MASK))
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3407 s->flags |= SN_ERR_LOCAL;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3408 if (!(s->flags & SN_FINST_MASK))
3409 s->flags |= SN_FINST_R;
3410
3411 return 1;
3412}
3413
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3414/* This stream analyser runs all HTTP request processing which is common to
3415 * frontends and backends, which means blocking ACLs, filters, connection-close,
3416 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3417 * 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]3418 * either needs more data or wants to immediately abort the request (eg: deny,
3419 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3420 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3421int 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]3422{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3423 struct http_txn *txn = &s->txn;
3424 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3425 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3426 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3427 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3428 struct cond_wordlist *wl;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3429
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3430 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3431 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3432 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3433 return 0;
3434 }
3435
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3436 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3437 req->analyse_exp = TICK_ETERNITY;
3438
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3439 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]3440 now_ms, __FUNCTION__,
3441 s,
3442 req,
3443 req->rex, req->wex,
3444 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3445 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3446 req->analysers);
3447
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3448 /* first check whether we have some ACLs set to block this request */
3449 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3450 int ret = acl_exec_cond(cond, px, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]3451
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3452 ret = acl_pass(ret);
3453 if (cond->pol == ACL_COND_UNLESS)
3454 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]3455
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3456 if (ret) {
3457 txn->status = 403;
3458 /* let's log the request time */
3459 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3460 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3461 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3462 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3463 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3464 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3465
Willy Tarreau5d5b5d82012-12-09 12:00:04 +0100[diff] [blame]3466 /* just in case we have some per-backend tracking */
3467 session_inc_be_http_req_ctr(s);
3468
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3469 /* evaluate http-request rules */
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3470 http_req_last_rule = http_req_get_intercept_rule(px, &px->http_req_rules, s, txn);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]3471
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3472 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3473 if (!http_req_last_rule) {
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3474 if (stats_check_uri(s->rep->prod, txn, px)) {
3475 s->target = &http_stats_applet.obj_type;
Willy Tarreau1fbe1c92013-12-01 09:35:41 +0100[diff] [blame]3476 if (unlikely(!stream_int_register_handler(s->rep->prod, objt_applet(s->target)))) {
3477 txn->status = 500;
3478 s->logs.tv_request = now;
3479 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3480
Willy Tarreau1fbe1c92013-12-01 09:35:41 +0100[diff] [blame]3481 if (!(s->flags & SN_ERR_MASK))
3482 s->flags |= SN_ERR_RESOURCE;
3483 goto return_prx_cond;
3484 }
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3485 /* parse the whole stats request and extract the relevant information */
3486 http_handle_stats(s, req);
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3487 http_req_last_rule = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, txn);
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3488 }
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3489 }
3490
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3491 /* only apply req{,i}{rep/deny/tarpit} if the request was not yet
3492 * blocked by an http-request rule.
3493 */
3494 if (!(txn->flags & (TX_CLDENY|TX_CLTARPIT)) && (px->req_exp != NULL)) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3495 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3496 goto return_bad_req;
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3497 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3498
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3499 /* return a 403 if either rule has blocked */
3500 if (txn->flags & (TX_CLDENY|TX_CLTARPIT)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3501 if (txn->flags & TX_CLDENY) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3502 txn->status = 403;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3503 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3504 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3505 session_inc_http_err_ctr(s);
Willy Tarreau687ba132013-11-16 10:13:35 +0100[diff] [blame]3506 s->fe->fe_counters.denied_req++;
3507 if (s->fe != s->be)
3508 s->be->be_counters.denied_req++;
3509 if (s->listener->counters)
3510 s->listener->counters->denied_req++;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3511 goto return_prx_cond;
3512 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3513
3514 /* When a connection is tarpitted, we use the tarpit timeout,
3515 * which may be the same as the connect timeout if unspecified.
3516 * If unset, then set it to zero because we really want it to
3517 * eventually expire. We build the tarpit as an analyser.
3518 */
3519 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3520 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3521 /* wipe the request out so that we can drop the connection early
3522 * if the client closes first.
3523 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3524 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3525 req->analysers = 0; /* remove switching rules etc... */
3526 req->analysers |= AN_REQ_HTTP_TARPIT;
3527 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3528 if (!req->analyse_exp)
3529 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3530 session_inc_http_err_ctr(s);
Willy Tarreau687ba132013-11-16 10:13:35 +0100[diff] [blame]3531 s->fe->fe_counters.denied_req++;
3532 if (s->fe != s->be)
3533 s->be->be_counters.denied_req++;
3534 if (s->listener->counters)
3535 s->listener->counters->denied_req++;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3536 return 1;
3537 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3538 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3539
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3540 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3541 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3542 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3543 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3544 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3545 * avoid to redo the same work if FE and BE have the same settings (common).
3546 * The method consists in checking if options changed between the two calls
3547 * (implying that either one is non-null, or one of them is non-null and we
3548 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3549 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3550
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3551 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3552 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3553 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3554 (s->be->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)))) {
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3555 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3556
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3557 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3558 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3559 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3560 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3561 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3562 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3563 tmp = TX_CON_WANT_CLO;
3564
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3565 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3566 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3567
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3568 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3569 /* parse the Connection header and possibly clean it */
3570 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3571 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3572 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3573 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3574 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3575 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3576 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3577 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3578 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3579
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3580 /* check if client or config asks for explicit close in KAL/SCL */
3581 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3582 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3583 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3584 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3585 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3586 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3587 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3588 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3589 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3590
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3591 /* we can be blocked here because the request needs to be authenticated,
3592 * either to pass or to access stats.
3593 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3594 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_AUTH) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]3595 char *realm = http_req_last_rule->arg.auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3596
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3597 if (!realm)
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3598 realm = (objt_applet(s->target) == &http_stats_applet) ? STATS_DEFAULT_REALM : px->id;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3599
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3600 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, realm);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3601 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3602 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3603 /* on 401 we still count one error, because normal browsing
3604 * won't significantly increase the counter but brute force
3605 * attempts will.
3606 */
3607 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3608 goto return_prx_cond;
3609 }
3610
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3611 /* add request headers from the rule sets in the same order */
3612 list_for_each_entry(wl, &px->req_add, list) {
3613 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3614 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]3615 ret = acl_pass(ret);
3616 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3617 ret = !ret;
3618 if (!ret)
3619 continue;
3620 }
3621
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3622 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3623 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3624 }
3625
3626 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_REDIR) {
3627 if (!http_apply_redirect_rule(http_req_last_rule->arg.redir, s, txn))
3628 goto return_bad_req;
3629 req->analyse_exp = TICK_ETERNITY;
3630 return 1;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3631 }
3632
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3633 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3634 /* process the stats request now */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3635 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3636 s->fe->fe_counters.intercepted_req++;
3637
3638 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3639 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
3640 if (!(s->flags & SN_FINST_MASK))
3641 s->flags |= SN_FINST_R;
3642
3643 req->analyse_exp = TICK_ETERNITY;
3644 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3645 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3646 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3647
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3648 /* check whether we have some ACLs set to redirect this request */
3649 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3650 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3651 int ret;
3652
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3653 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]3654 ret = acl_pass(ret);
3655 if (rule->cond->pol == ACL_COND_UNLESS)
3656 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3657 if (!ret)
3658 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3659 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3660 if (!http_apply_redirect_rule(rule, s, txn))
3661 goto return_bad_req;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3662
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3663 req->analyse_exp = TICK_ETERNITY;
3664 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3665 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3666
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3667 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3668 * If this happens, then the data will not come immediately, so we must
3669 * send all what we have without waiting. Note that due to the small gain
3670 * 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]3671 * 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]3672 * itself once used.
3673 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3674 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3675
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3676 /* that's OK for us now, let's move on to next analysers */
3677 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3678
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3679 return_bad_req:
3680 /* We centralize bad requests processing here */
3681 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3682 /* we detected a parsing error. We want to archive this request
3683 * in the dedicated proxy area for later troubleshooting.
3684 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3685 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]3686 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3687
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3688 txn->req.msg_state = HTTP_MSG_ERROR;
3689 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3690 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3691
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3692 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3693 if (s->listener->counters)
3694 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3695
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3696 return_prx_cond:
3697 if (!(s->flags & SN_ERR_MASK))
3698 s->flags |= SN_ERR_PRXCOND;
3699 if (!(s->flags & SN_FINST_MASK))
3700 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3701
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3702 req->analysers = 0;
3703 req->analyse_exp = TICK_ETERNITY;
3704 return 0;
3705}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3706
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3707/* This function performs all the processing enabled for the current request.
3708 * It returns 1 if the processing can continue on next analysers, or zero if it
3709 * needs more data, encounters an error, or wants to immediately abort the
3710 * request. It relies on buffers flags, and updates s->req->analysers.
3711 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3712int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3713{
3714 struct http_txn *txn = &s->txn;
3715 struct http_msg *msg = &txn->req;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3716 struct connection *cli_conn = objt_conn(req->prod->end);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3717
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3718 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3719 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3720 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3721 return 0;
3722 }
3723
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3724 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]3725 now_ms, __FUNCTION__,
3726 s,
3727 req,
3728 req->rex, req->wex,
3729 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3730 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3731 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3732
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3733 if (s->fe->comp || s->be->comp)
3734 select_compression_request_header(s, req->buf);
3735
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3736 /*
3737 * Right now, we know that we have processed the entire headers
3738 * and that unwanted requests have been filtered out. We can do
3739 * whatever we want with the remaining request. Also, now we
3740 * may have separate values for ->fe, ->be.
3741 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3742
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3743 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3744 * If HTTP PROXY is set we simply get remote server address parsing
3745 * incoming request. Note that this requires that a connection is
3746 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3747 */
3748 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3749 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]3750 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3751
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]3752 /* Note that for now we don't reuse existing proxy connections */
3753 if (unlikely((conn = si_alloc_conn(req->cons, 0)) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3754 txn->req.msg_state = HTTP_MSG_ERROR;
3755 txn->status = 500;
3756 req->analysers = 0;
3757 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
3758
3759 if (!(s->flags & SN_ERR_MASK))
3760 s->flags |= SN_ERR_RESOURCE;
3761 if (!(s->flags & SN_FINST_MASK))
3762 s->flags |= SN_FINST_R;
3763
3764 return 0;
3765 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]3766
3767 path = http_get_path(txn);
3768 url2sa(req->buf->p + msg->sl.rq.u,
3769 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
3770 &conn->addr.to);
3771 /* if the path was found, we have to remove everything between
3772 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
3773 * found, we need to replace from req->buf->p + msg->sl.rq.u for
3774 * u_l characters by a single "/".
3775 */
3776 if (path) {
3777 char *cur_ptr = req->buf->p;
3778 char *cur_end = cur_ptr + txn->req.sl.rq.l;
3779 int delta;
3780
3781 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
3782 http_msg_move_end(&txn->req, delta);
3783 cur_end += delta;
3784 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
3785 goto return_bad_req;
3786 }
3787 else {
3788 char *cur_ptr = req->buf->p;
3789 char *cur_end = cur_ptr + txn->req.sl.rq.l;
3790 int delta;
3791
3792 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
3793 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
3794 http_msg_move_end(&txn->req, delta);
3795 cur_end += delta;
3796 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
3797 goto return_bad_req;
3798 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3799 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3800
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3801 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3802 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3803 * Note that doing so might move headers in the request, but
3804 * the fields will stay coherent and the URI will not move.
3805 * This should only be performed in the backend.
3806 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3807 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3808 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3809 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3810
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3811 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3812 * 8: the appsession cookie was looked up very early in 1.2,
3813 * so let's do the same now.
3814 */
3815
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3816 /* It needs to look into the URI unless persistence must be ignored */
3817 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3818 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]3819 }
3820
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3821 /* add unique-id if "header-unique-id" is specified */
3822
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]3823 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
3824 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
3825 goto return_bad_req;
3826 s->unique_id[0] = '\0';
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3827 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]3828 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3829
3830 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3831 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3832 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3833 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3834 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]3835 goto return_bad_req;
3836 }
3837
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3838 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3839 * 9: add X-Forwarded-For if either the frontend or the backend
3840 * asks for it.
3841 */
3842 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3843 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3844 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3845 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3846 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]3847 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3848 /* The header is set to be added only if none is present
3849 * and we found it, so don't do anything.
3850 */
3851 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3852 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3853 /* Add an X-Forwarded-For header unless the source IP is
3854 * in the 'except' network range.
3855 */
3856 if ((!s->fe->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3857 (((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]3858 != s->fe->except_net.s_addr) &&
3859 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3860 (((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]3861 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3862 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3863 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3864 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3865
3866 /* Note: we rely on the backend to get the header name to be used for
3867 * x-forwarded-for, because the header is really meant for the backends.
3868 * However, if the backend did not specify any option, we have to rely
3869 * on the frontend's header name.
3870 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3871 if (s->be->fwdfor_hdr_len) {
3872 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3873 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3874 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3875 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3876 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3877 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3878 len += sprintf(trash.str + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]3879
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3880 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]3881 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3882 }
3883 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3884 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3885 /* FIXME: for the sake of completeness, we should also support
3886 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3887 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3888 int len;
3889 char pn[INET6_ADDRSTRLEN];
3890 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3891 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3892 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3893
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3894 /* Note: we rely on the backend to get the header name to be used for
3895 * x-forwarded-for, because the header is really meant for the backends.
3896 * However, if the backend did not specify any option, we have to rely
3897 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3898 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3899 if (s->be->fwdfor_hdr_len) {
3900 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3901 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3902 } else {
3903 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3904 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3905 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3906 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3907
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3908 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]3909 goto return_bad_req;
3910 }
3911 }
3912
3913 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3914 * 10: add X-Original-To if either the frontend or the backend
3915 * asks for it.
3916 */
3917 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3918
3919 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3920 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3921 /* Add an X-Original-To header unless the destination IP is
3922 * in the 'except' network range.
3923 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3924 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3925
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3926 if (cli_conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3927 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3928 (((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]3929 != s->fe->except_to.s_addr) &&
3930 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3931 (((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]3932 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3933 int len;
3934 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3935 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3936
3937 /* Note: we rely on the backend to get the header name to be used for
3938 * x-original-to, because the header is really meant for the backends.
3939 * However, if the backend did not specify any option, we have to rely
3940 * on the frontend's header name.
3941 */
3942 if (s->be->orgto_hdr_len) {
3943 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3944 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3945 } else {
3946 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3947 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3948 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3949 len += sprintf(trash.str + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3950
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3951 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]3952 goto return_bad_req;
3953 }
3954 }
3955 }
3956
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3957 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3958 * If an "Upgrade" token is found, the header is left untouched in order not to have
3959 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3960 * "Upgrade" is present in the Connection header.
3961 */
3962 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3963 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3964 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3965 unsigned int want_flags = 0;
3966
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3967 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3968 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3969 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3970 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3971 want_flags |= TX_CON_CLO_SET;
3972 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3973 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3974 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3975 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3976 want_flags |= TX_CON_KAL_SET;
3977 }
3978
3979 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3980 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3981 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3982
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3983
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3984 /* If we have no server assigned yet and we're balancing on url_param
3985 * with a POST request, we may be interested in checking the body for
3986 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3987 */
3988 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3989 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3990 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3991 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3992 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3993 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3994 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3995
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3996 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3997 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3998#ifdef TCP_QUICKACK
3999 /* We expect some data from the client. Unless we know for sure
4000 * we already have a full request, we have to re-enable quick-ack
4001 * in case we previously disabled it, otherwise we might cause
4002 * the client to delay further data.
4003 */
4004 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]4005 cli_conn && (cli_conn->flags & CO_FL_CTRL_READY) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4006 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4007 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4008 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4009#endif
4010 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4011
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4012 /*************************************************************
4013 * OK, that's finished for the headers. We have done what we *
4014 * could. Let's switch to the DATA state. *
4015 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4016 req->analyse_exp = TICK_ETERNITY;
4017 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4018
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4019 /* if the server closes the connection, we want to immediately react
4020 * and close the socket to save packets and syscalls.
4021 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4022 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
4023 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4024
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4025 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4026 /* OK let's go on with the BODY now */
4027 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4028
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4029 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4030 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4031 /* we detected a parsing error. We want to archive this request
4032 * in the dedicated proxy area for later troubleshooting.
4033 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4034 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]4035 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4036
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4037 txn->req.msg_state = HTTP_MSG_ERROR;
4038 txn->status = 400;
4039 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4040 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4041
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4042 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4043 if (s->listener->counters)
4044 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4045
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4046 if (!(s->flags & SN_ERR_MASK))
4047 s->flags |= SN_ERR_PRXCOND;
4048 if (!(s->flags & SN_FINST_MASK))
4049 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4050 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4051}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4052
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4053/* This function is an analyser which processes the HTTP tarpit. It always
4054 * returns zero, at the beginning because it prevents any other processing
4055 * from occurring, and at the end because it terminates the request.
4056 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4057int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4058{
4059 struct http_txn *txn = &s->txn;
4060
4061 /* This connection is being tarpitted. The CLIENT side has
4062 * already set the connect expiration date to the right
4063 * timeout. We just have to check that the client is still
4064 * there and that the timeout has not expired.
4065 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4066 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4067 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4068 !tick_is_expired(req->analyse_exp, now_ms))
4069 return 0;
4070
4071 /* We will set the queue timer to the time spent, just for
4072 * logging purposes. We fake a 500 server error, so that the
4073 * attacker will not suspect his connection has been tarpitted.
4074 * It will not cause trouble to the logs because we can exclude
4075 * the tarpitted connections by filtering on the 'PT' status flags.
4076 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4077 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4078
4079 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4080 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4081 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4082
4083 req->analysers = 0;
4084 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4085
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4086 if (!(s->flags & SN_ERR_MASK))
4087 s->flags |= SN_ERR_PRXCOND;
4088 if (!(s->flags & SN_FINST_MASK))
4089 s->flags |= SN_FINST_T;
4090 return 0;
4091}
4092
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4093/* This function is an analyser which processes the HTTP request body. It looks
4094 * for parameters to be used for the load balancing algorithm (url_param). It
4095 * must only be called after the standard HTTP request processing has occurred,
4096 * because it expects the request to be parsed. It returns zero if it needs to
4097 * read more data, or 1 once it has completed its analysis.
4098 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4099int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4100{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4101 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4102 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4103 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4104
4105 /* We have to parse the HTTP request body to find any required data.
4106 * "balance url_param check_post" should have been the only way to get
4107 * into this. We were brought here after HTTP header analysis, so all
4108 * related structures are ready.
4109 */
4110
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4111 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4112 goto missing_data;
4113
4114 if (msg->msg_state < HTTP_MSG_100_SENT) {
4115 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4116 * send an HTTP/1.1 100 Continue intermediate response.
4117 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4118 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4119 struct hdr_ctx ctx;
4120 ctx.idx = 0;
4121 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4122 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4123 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4124 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4125 }
4126 }
4127 msg->msg_state = HTTP_MSG_100_SENT;
4128 }
4129
4130 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4131 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4132 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4133 * is still null. We must save the body in msg->next because it
4134 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4135 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4136 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4137
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4138 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4139 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4140 else
4141 msg->msg_state = HTTP_MSG_DATA;
4142 }
4143
4144 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4145 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4146 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4147 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4148 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4149 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4150
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4151 if (!ret)
4152 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4153 else if (ret < 0) {
4154 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4155 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4156 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4157 }
4158
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4159 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4160 * We have the first data byte is in msg->sov. We're waiting for at
4161 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4162 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4163
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4164 if (msg->body_len < limit)
4165 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4166
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4167 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4168 goto http_end;
4169
4170 missing_data:
4171 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4172 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4173 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4174 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4175 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4176
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4177 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4178 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4179 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4180
4181 if (!(s->flags & SN_ERR_MASK))
4182 s->flags |= SN_ERR_CLITO;
4183 if (!(s->flags & SN_FINST_MASK))
4184 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4185 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4186 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4187
4188 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4189 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR)) && !buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4190 /* Not enough data. We'll re-use the http-request
4191 * timeout here. Ideally, we should set the timeout
4192 * relative to the accept() date. We just set the
4193 * request timeout once at the beginning of the
4194 * request.
4195 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4196 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4197 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4198 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4199 return 0;
4200 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4201
4202 http_end:
4203 /* The situation will not evolve, so let's give up on the analysis. */
4204 s->logs.tv_request = now; /* update the request timer to reflect full request */
4205 req->analysers &= ~an_bit;
4206 req->analyse_exp = TICK_ETERNITY;
4207 return 1;
4208
4209 return_bad_req: /* let's centralize all bad requests */
4210 txn->req.msg_state = HTTP_MSG_ERROR;
4211 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4212 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4213
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4214 if (!(s->flags & SN_ERR_MASK))
4215 s->flags |= SN_ERR_PRXCOND;
4216 if (!(s->flags & SN_FINST_MASK))
4217 s->flags |= SN_FINST_R;
4218
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4219 return_err_msg:
4220 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4221 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4222 if (s->listener->counters)
4223 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4224 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4225}
4226
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4227/* send a server's name with an outgoing request over an established connection.
4228 * Note: this function is designed to be called once the request has been scheduled
4229 * for being forwarded. This is the reason why it rewinds the buffer before
4230 * proceeding.
4231 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4232int 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]4233
4234 struct hdr_ctx ctx;
4235
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4236 char *hdr_name = be->server_id_hdr_name;
4237 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4238 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4239 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4240 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4241
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4242 ctx.idx = 0;
4243
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4244 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4245 if (old_o) {
4246 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4247 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4248 }
4249
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4250 old_i = chn->buf->i;
4251 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]4252 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4253 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4254 }
4255
4256 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4257 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4258 memcpy(hdr_val, hdr_name, hdr_name_len);
4259 hdr_val += hdr_name_len;
4260 *hdr_val++ = ':';
4261 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4262 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4263 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]4264
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4265 if (old_o) {
4266 /* If this was a forwarded request, we must readjust the amount of
4267 * data to be forwarded in order to take into account the size
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4268 * variations. Note that if the request was already scheduled for
4269 * forwarding, it had its req->sol pointing to the body, which
4270 * must then be updated too.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4271 */
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4272 txn->req.sol += chn->buf->i - old_i;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4273 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4274 }
4275
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4276 return 0;
4277}
4278
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4279/* Terminate current transaction and prepare a new one. This is very tricky
4280 * right now but it works.
4281 */
4282void http_end_txn_clean_session(struct session *s)
4283{
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame^]4284 int prev_status = s->txn.status;
4285
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4286 /* FIXME: We need a more portable way of releasing a backend's and a
4287 * server's connections. We need a safer way to reinitialize buffer
4288 * flags. We also need a more accurate method for computing per-request
4289 * data.
4290 */
4291 http_silent_debug(__LINE__, s);
4292
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4293 /* unless we're doing keep-alive, we want to quickly close the connection
4294 * to the server.
4295 */
4296 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4297 !si_conn_ready(s->req->cons)) {
4298 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4299 si_shutr(s->req->cons);
4300 si_shutw(s->req->cons);
4301 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4302
4303 http_silent_debug(__LINE__, s);
4304
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4305 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4306 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4307 if (unlikely(s->srv_conn))
4308 sess_change_server(s, NULL);
4309 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4310
4311 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4312 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4313 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4314
4315 if (s->txn.status) {
4316 int n;
4317
4318 n = s->txn.status / 100;
4319 if (n < 1 || n > 5)
4320 n = 0;
4321
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4322 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4323 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4324 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4325 s->fe->fe_counters.p.http.comp_rsp++;
4326 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4327 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4328 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4329 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4330 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4331 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4332 s->be->be_counters.p.http.comp_rsp++;
4333 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4334 }
4335
4336 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4337 s->logs.bytes_in -= s->req->buf->i;
4338 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4339
4340 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4341 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4342 !(s->flags & SN_MONITOR) &&
4343 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4344 s->do_log(s);
4345 }
4346
4347 s->logs.accept_date = date; /* user-visible date for logging */
4348 s->logs.tv_accept = now; /* corrected date for internal use */
4349 tv_zero(&s->logs.tv_request);
4350 s->logs.t_queue = -1;
4351 s->logs.t_connect = -1;
4352 s->logs.t_data = -1;
4353 s->logs.t_close = 0;
4354 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4355 s->logs.srv_queue_size = 0; /* we will get this number soon */
4356
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4357 s->logs.bytes_in = s->req->total = s->req->buf->i;
4358 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4359
4360 if (s->pend_pos)
4361 pendconn_free(s->pend_pos);
4362
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4363 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4364 if (s->flags & SN_CURR_SESS) {
4365 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4366 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4367 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4368 if (may_dequeue_tasks(objt_server(s->target), s->be))
4369 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4370 }
4371
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4372 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4373
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4374 /* only release our endpoint if we don't intend to reuse the
4375 * connection.
4376 */
4377 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4378 !si_conn_ready(s->req->cons)) {
4379 si_release_endpoint(s->req->cons);
4380 }
4381
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4382 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4383 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4384 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4385 s->req->cons->exp = TICK_ETERNITY;
4386 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4387 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4388 s->rep->flags &= ~(CF_SHUTR|CF_SHUTR_NOW|CF_READ_ATTACHED|CF_READ_ERROR|CF_READ_NOEXP|CF_STREAMER|CF_STREAMER_FAST|CF_WRITE_PARTIAL|CF_NEVER_WAIT);
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4389 s->flags &= ~(SN_DIRECT|SN_ASSIGNED|SN_ADDR_SET|SN_BE_ASSIGNED|SN_FORCE_PRST|SN_IGNORE_PRST);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4390 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4391
4392 if (s->flags & SN_COMP_READY)
4393 s->comp_algo->end(&s->comp_ctx);
4394 s->comp_algo = NULL;
4395 s->flags &= ~SN_COMP_READY;
4396
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4397 s->txn.meth = 0;
4398 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4399 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame^]4400
4401 if (prev_status == 401 || prev_status == 407) {
4402 /* In HTTP keep-alive mode, if we receive a 401, we still have
4403 * a chance of being able to send the visitor again to the same
4404 * server over the same connection. This is required by some
4405 * broken protocols such as NTLM, and anyway whenever there is
4406 * an opportunity for sending the challenge to the proper place,
4407 * it's better to do it (at least it helps with debugging).
4408 */
4409 s->txn.flags |= TX_PREFER_LAST;
4410 }
4411
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4412 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4413 s->req->cons->flags |= SI_FL_INDEP_STR;
4414
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4415 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4416 s->req->flags |= CF_NEVER_WAIT;
4417 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4418 }
4419
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4420 /* if the request buffer is not empty, it means we're
4421 * about to process another request, so send pending
4422 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4423 * Just don't do this if the buffer is close to be full,
4424 * because the request will wait for it to flush a little
4425 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4426 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4427 if (s->req->buf->i) {
4428 if (s->rep->buf->o &&
4429 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4430 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]4431 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4432 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4433
4434 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4435 channel_auto_read(s->req);
4436 channel_auto_close(s->req);
4437 channel_auto_read(s->rep);
4438 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4439
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]4440 /* we're in keep-alive with an idle connection, monitor it */
4441 si_idle_conn(s->req->cons);
4442
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4443 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4444 s->rep->analysers = 0;
4445
4446 http_silent_debug(__LINE__, s);
4447}
4448
4449
4450/* This function updates the request state machine according to the response
4451 * state machine and buffer flags. It returns 1 if it changes anything (flag
4452 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4453 * it is only used to find when a request/response couple is complete. Both
4454 * this function and its equivalent should loop until both return zero. It
4455 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4456 */
4457int http_sync_req_state(struct session *s)
4458{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4459 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4460 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4461 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4462 unsigned int old_state = txn->req.msg_state;
4463
4464 http_silent_debug(__LINE__, s);
4465 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4466 return 0;
4467
4468 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4469 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4470 * We can shut the read side unless we want to abort_on_close,
4471 * or we have a POST request. The issue with POST requests is
4472 * that some browsers still send a CRLF after the request, and
4473 * this CRLF must be read so that it does not remain in the kernel
4474 * buffers, otherwise a close could cause an RST on some systems
4475 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4476 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4477 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4478 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4479
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4480 /* if the server closes the connection, we want to immediately react
4481 * and close the socket to save packets and syscalls.
4482 */
4483 chn->cons->flags |= SI_FL_NOHALF;
4484
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4485 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4486 goto wait_other_side;
4487
4488 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4489 /* The server has not finished to respond, so we
4490 * don't want to move in order not to upset it.
4491 */
4492 goto wait_other_side;
4493 }
4494
4495 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4496 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4497 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4498 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4499 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4500 goto wait_other_side;
4501 }
4502
4503 /* When we get here, it means that both the request and the
4504 * response have finished receiving. Depending on the connection
4505 * mode, we'll have to wait for the last bytes to leave in either
4506 * direction, and sometimes for a close to be effective.
4507 */
4508
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4509 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4510 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4511 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4512 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4513 }
4514 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4515 /* Option forceclose is set, or either side wants to close,
4516 * let's enforce it now that we're not expecting any new
4517 * data to come. The caller knows the session is complete
4518 * once both states are CLOSED.
4519 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4520 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4521 channel_shutr_now(chn);
4522 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4523 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4524 }
4525 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4526 /* The last possible modes are keep-alive and tunnel. Tunnel mode
4527 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4528 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4529 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
4530 channel_auto_read(chn);
4531 txn->req.msg_state = HTTP_MSG_TUNNEL;
4532 chn->flags |= CF_NEVER_WAIT;
4533 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4534 }
4535
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4536 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4537 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4538 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4539
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4540 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4541 txn->req.msg_state = HTTP_MSG_CLOSING;
4542 goto http_msg_closing;
4543 }
4544 else {
4545 txn->req.msg_state = HTTP_MSG_CLOSED;
4546 goto http_msg_closed;
4547 }
4548 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4549 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4550 }
4551
4552 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4553 http_msg_closing:
4554 /* nothing else to forward, just waiting for the output buffer
4555 * to be empty and for the shutw_now to take effect.
4556 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4557 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4558 txn->req.msg_state = HTTP_MSG_CLOSED;
4559 goto http_msg_closed;
4560 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4561 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4562 txn->req.msg_state = HTTP_MSG_ERROR;
4563 goto wait_other_side;
4564 }
4565 }
4566
4567 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4568 http_msg_closed:
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]4569 if (!(s->be->options & PR_O_ABRT_CLOSE))
4570 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4571 goto wait_other_side;
4572 }
4573
4574 wait_other_side:
4575 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4576 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4577}
4578
4579
4580/* This function updates the response state machine according to the request
4581 * state machine and buffer flags. It returns 1 if it changes anything (flag
4582 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4583 * it is only used to find when a request/response couple is complete. Both
4584 * this function and its equivalent should loop until both return zero. It
4585 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4586 */
4587int http_sync_res_state(struct session *s)
4588{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4589 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4590 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4591 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4592 unsigned int old_state = txn->rsp.msg_state;
4593
4594 http_silent_debug(__LINE__, s);
4595 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4596 return 0;
4597
4598 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4599 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4600 * still monitor the server connection for a possible close
4601 * while the request is being uploaded, so we don't disable
4602 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4603 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4604 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4605
4606 if (txn->req.msg_state == HTTP_MSG_ERROR)
4607 goto wait_other_side;
4608
4609 if (txn->req.msg_state < HTTP_MSG_DONE) {
4610 /* The client seems to still be sending data, probably
4611 * because we got an error response during an upload.
4612 * We have the choice of either breaking the connection
4613 * or letting it pass through. Let's do the later.
4614 */
4615 goto wait_other_side;
4616 }
4617
4618 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4619 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4620 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4621 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4622 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4623 goto wait_other_side;
4624 }
4625
4626 /* When we get here, it means that both the request and the
4627 * response have finished receiving. Depending on the connection
4628 * mode, we'll have to wait for the last bytes to leave in either
4629 * direction, and sometimes for a close to be effective.
4630 */
4631
4632 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4633 /* Server-close mode : shut read and wait for the request
4634 * side to close its output buffer. The caller will detect
4635 * when we're in DONE and the other is in CLOSED and will
4636 * catch that for the final cleanup.
4637 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4638 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4639 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4640 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4641 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4642 /* Option forceclose is set, or either side wants to close,
4643 * let's enforce it now that we're not expecting any new
4644 * data to come. The caller knows the session is complete
4645 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4646 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4647 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4648 channel_shutr_now(chn);
4649 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4650 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4651 }
4652 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4653 /* The last possible modes are keep-alive and tunnel. Tunnel will
4654 * need to forward remaining data. Keep-alive will need to monitor
4655 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4656 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4657 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4658 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4659 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
4660 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4661 }
4662
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4663 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4664 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4665 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4666 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4667 goto http_msg_closing;
4668 }
4669 else {
4670 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4671 goto http_msg_closed;
4672 }
4673 }
4674 goto wait_other_side;
4675 }
4676
4677 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4678 http_msg_closing:
4679 /* nothing else to forward, just waiting for the output buffer
4680 * to be empty and for the shutw_now to take effect.
4681 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4682 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4683 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4684 goto http_msg_closed;
4685 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4686 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4687 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4688 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4689 if (objt_server(s->target))
4690 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4691 goto wait_other_side;
4692 }
4693 }
4694
4695 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4696 http_msg_closed:
4697 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4698 bi_erase(chn);
4699 channel_auto_close(chn);
4700 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4701 goto wait_other_side;
4702 }
4703
4704 wait_other_side:
4705 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4706 /* We force the response to leave immediately if we're waiting for the
4707 * other side, since there is no pending shutdown to push it out.
4708 */
4709 if (!channel_is_empty(chn))
4710 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4711 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4712}
4713
4714
4715/* Resync the request and response state machines. Return 1 if either state
4716 * changes.
4717 */
4718int http_resync_states(struct session *s)
4719{
4720 struct http_txn *txn = &s->txn;
4721 int old_req_state = txn->req.msg_state;
4722 int old_res_state = txn->rsp.msg_state;
4723
4724 http_silent_debug(__LINE__, s);
4725 http_sync_req_state(s);
4726 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4727 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4728 if (!http_sync_res_state(s))
4729 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4730 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4731 if (!http_sync_req_state(s))
4732 break;
4733 }
4734 http_silent_debug(__LINE__, s);
4735 /* OK, both state machines agree on a compatible state.
4736 * There are a few cases we're interested in :
4737 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4738 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4739 * directions, so let's simply disable both analysers.
4740 * - HTTP_MSG_CLOSED on the response only means we must abort the
4741 * request.
4742 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4743 * with server-close mode means we've completed one request and we
4744 * must re-initialize the server connection.
4745 */
4746
4747 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4748 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4749 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4750 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4751 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4752 channel_auto_close(s->req);
4753 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4754 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4755 channel_auto_close(s->rep);
4756 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4757 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4758 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
4759 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4760 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4761 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4762 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4763 channel_auto_close(s->rep);
4764 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4765 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4766 channel_abort(s->req);
4767 channel_auto_close(s->req);
4768 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4769 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4770 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4771 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
4772 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4773 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4774 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4775 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4776 /* server-close/keep-alive: terminate this transaction,
4777 * possibly killing the server connection and reinitialize
4778 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4779 */
4780 http_end_txn_clean_session(s);
4781 }
4782
4783 http_silent_debug(__LINE__, s);
4784 return txn->req.msg_state != old_req_state ||
4785 txn->rsp.msg_state != old_res_state;
4786}
4787
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4788/* This function is an analyser which forwards request body (including chunk
4789 * sizes if any). It is called as soon as we must forward, even if we forward
4790 * zero byte. The only situation where it must not be called is when we're in
4791 * tunnel mode and we want to forward till the close. It's used both to forward
4792 * remaining data and to resync after end of body. It expects the msg_state to
4793 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4794 * 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]4795 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4796 * bytes of pending data + the headers if not already done (between sol and sov).
4797 * It eventually adjusts sol to match sov after the data in between have been sent.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4798 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4799int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4800{
4801 struct http_txn *txn = &s->txn;
4802 struct http_msg *msg = &s->txn.req;
4803
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4804 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4805 return 0;
4806
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4807 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]4808 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4809 /* Output closed while we were sending data. We must abort and
4810 * wake the other side up.
4811 */
4812 msg->msg_state = HTTP_MSG_ERROR;
4813 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4814 return 1;
4815 }
4816
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4817 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4818 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4819
4820 /* Note that we don't have to send 100-continue back because we don't
4821 * need the data to complete our job, and it's up to the server to
4822 * decide whether to return 100, 417 or anything else in return of
4823 * an "Expect: 100-continue" header.
4824 */
4825
4826 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4827 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4828 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4829 * is still null. We must save the body in msg->next because it
4830 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4831 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4832 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4833
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4834 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4835 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4836 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4837 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4838 }
4839
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4840 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4841 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4842
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4843 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4844 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4845 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4846 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4847 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4848 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4849 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4850 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4851 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4852
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4853 if (msg->msg_state == HTTP_MSG_DATA) {
4854 /* must still forward */
4855 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4856 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4857
4858 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4859 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4860 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4861 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4862 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4863 }
4864 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4865 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4866 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4867 * TRAILERS state.
4868 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4869 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4870
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4871 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4872 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4873 else if (ret < 0) {
4874 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4875 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4876 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]4877 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4878 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4879 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4880 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4881 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4882 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4883 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4884
4885 if (ret == 0)
4886 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4887 else if (ret < 0) {
4888 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4889 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4890 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]4891 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4892 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4893 /* we're in MSG_CHUNK_SIZE now */
4894 }
4895 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4896 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4897
4898 if (ret == 0)
4899 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4900 else if (ret < 0) {
4901 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4902 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4903 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]4904 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4905 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4906 /* we're in HTTP_MSG_DONE now */
4907 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4908 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4909 int old_state = msg->msg_state;
4910
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4911 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4912 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4913 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4914 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4915 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4916 if (http_resync_states(s)) {
4917 /* some state changes occurred, maybe the analyser
4918 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4919 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4920 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4921 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4922 /* request errors are most likely due to
4923 * the server aborting the transfer.
4924 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4925 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4926 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4927 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4928 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4929 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4930 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4931 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4932 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4933
4934 /* If "option abortonclose" is set on the backend, we
4935 * want to monitor the client's connection and forward
4936 * any shutdown notification to the server, which will
4937 * decide whether to close or to go on processing the
4938 * request.
4939 */
4940 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4941 channel_auto_read(req);
4942 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4943 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4944 else if (s->txn.meth == HTTP_METH_POST) {
4945 /* POST requests may require to read extra CRLF
4946 * sent by broken browsers and which could cause
4947 * an RST to be sent upon close on some systems
4948 * (eg: Linux).
4949 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4950 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4951 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4952
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4953 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4954 }
4955 }
4956
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4957 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4958 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4959 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4960 if (!(s->flags & SN_ERR_MASK))
4961 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4962 if (!(s->flags & SN_FINST_MASK)) {
4963 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4964 s->flags |= SN_FINST_H;
4965 else
4966 s->flags |= SN_FINST_D;
4967 }
4968
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4969 s->fe->fe_counters.cli_aborts++;
4970 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4971 if (objt_server(s->target))
4972 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4973
4974 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4975 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4976
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4977 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4978 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4979 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4980
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4981 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4982 * 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]4983 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4984 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4985 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4986
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4987 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4988 * 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]4989 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4990 * modes are already handled by the stream sock layer. We must not do
4991 * this in content-length mode because it could present the MSG_MORE
4992 * flag with the last block of forwarded data, which would cause an
4993 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4994 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4995 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4996 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4997
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4998 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4999 return 0;
5000
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5001 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5002 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5003 if (s->listener->counters)
5004 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5005 return_bad_req_stats_ok:
5006 txn->req.msg_state = HTTP_MSG_ERROR;
5007 if (txn->status) {
5008 /* Note: we don't send any error if some data were already sent */
5009 stream_int_retnclose(req->prod, NULL);
5010 } else {
5011 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5012 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5013 }
5014 req->analysers = 0;
5015 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]5016
5017 if (!(s->flags & SN_ERR_MASK))
5018 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5019 if (!(s->flags & SN_FINST_MASK)) {
5020 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5021 s->flags |= SN_FINST_H;
5022 else
5023 s->flags |= SN_FINST_D;
5024 }
5025 return 0;
5026
5027 aborted_xfer:
5028 txn->req.msg_state = HTTP_MSG_ERROR;
5029 if (txn->status) {
5030 /* Note: we don't send any error if some data were already sent */
5031 stream_int_retnclose(req->prod, NULL);
5032 } else {
5033 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5034 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5035 }
5036 req->analysers = 0;
5037 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5038
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5039 s->fe->fe_counters.srv_aborts++;
5040 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5041 if (objt_server(s->target))
5042 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5043
5044 if (!(s->flags & SN_ERR_MASK))
5045 s->flags |= SN_ERR_SRVCL;
5046 if (!(s->flags & SN_FINST_MASK)) {
5047 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5048 s->flags |= SN_FINST_H;
5049 else
5050 s->flags |= SN_FINST_D;
5051 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5052 return 0;
5053}
5054
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5055/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5056 * processing can continue on next analysers, or zero if it either needs more
5057 * data or wants to immediately abort the response (eg: timeout, error, ...). It
5058 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
5059 * when it has nothing left to do, and may remove any analyser when it wants to
5060 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5061 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5062int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5063{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5064 struct http_txn *txn = &s->txn;
5065 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5066 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5067 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5068 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5069 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5070
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5071 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]5072 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5073 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5074 rep,
5075 rep->rex, rep->wex,
5076 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5077 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5078 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5079
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5080 /*
5081 * Now parse the partial (or complete) lines.
5082 * We will check the response syntax, and also join multi-line
5083 * headers. An index of all the lines will be elaborated while
5084 * parsing.
5085 *
5086 * For the parsing, we use a 28 states FSM.
5087 *
5088 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5089 * rep->buf->p = beginning of response
5090 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5091 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5092 * msg->eol = end of current header or line (LF or CRLF)
5093 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5094 */
5095
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5096 /* There's a protected area at the end of the buffer for rewriting
5097 * purposes. We don't want to start to parse the request if the
5098 * protected area is affected, because we may have to move processed
5099 * data later, which is much more complicated.
5100 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5101 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5102 if (unlikely(!channel_reserved(rep))) {
5103 /* some data has still not left the buffer, wake us once that's done */
5104 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5105 goto abort_response;
5106 channel_dont_close(rep);
5107 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
5108 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5109 }
5110
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5111 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5112 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5113 buffer_slow_realign(rep->buf);
5114
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5115 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5116 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5117 }
5118
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5119 /* 1: we might have to print this header in debug mode */
5120 if (unlikely((global.mode & MODE_DEBUG) &&
5121 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5122 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5123 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5124
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5125 sol = rep->buf->p;
5126 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5127 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5128
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5129 sol += hdr_idx_first_pos(&txn->hdr_idx);
5130 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5131
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5132 while (cur_idx) {
5133 eol = sol + txn->hdr_idx.v[cur_idx].len;
5134 debug_hdr("srvhdr", s, sol, eol);
5135 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5136 cur_idx = txn->hdr_idx.v[cur_idx].next;
5137 }
5138 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5139
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5140 /*
5141 * Now we quickly check if we have found a full valid response.
5142 * If not so, we check the FD and buffer states before leaving.
5143 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5144 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5145 * responses are checked first.
5146 *
5147 * Depending on whether the client is still there or not, we
5148 * may send an error response back or not. Note that normally
5149 * we should only check for HTTP status there, and check I/O
5150 * errors somewhere else.
5151 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5152
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5153 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5154 /* Invalid response */
5155 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5156 /* we detected a parsing error. We want to archive this response
5157 * in the dedicated proxy area for later troubleshooting.
5158 */
5159 hdr_response_bad:
5160 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5161 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]5162
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5163 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5164 if (objt_server(s->target)) {
5165 objt_server(s->target)->counters.failed_resp++;
5166 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5167 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5168 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5169 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5170 rep->analysers = 0;
5171 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5172 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5173 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5174 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5175
5176 if (!(s->flags & SN_ERR_MASK))
5177 s->flags |= SN_ERR_PRXCOND;
5178 if (!(s->flags & SN_FINST_MASK))
5179 s->flags |= SN_FINST_H;
5180
5181 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5182 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5183
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5184 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5185 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5186 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5187 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5188 goto hdr_response_bad;
5189 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5190
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5191 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5192 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5193 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5194 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]5195 else if (txn->flags & TX_NOT_FIRST)
5196 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5197
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5198 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5199 if (objt_server(s->target)) {
5200 objt_server(s->target)->counters.failed_resp++;
5201 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5202 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5203
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5204 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5205 rep->analysers = 0;
5206 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5207 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5208 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5209 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5210
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5211 if (!(s->flags & SN_ERR_MASK))
5212 s->flags |= SN_ERR_SRVCL;
5213 if (!(s->flags & SN_FINST_MASK))
5214 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5215 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5216 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5217
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5218 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5219 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5220 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5221 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]5222 else if (txn->flags & TX_NOT_FIRST)
5223 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5224
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5225 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5226 if (objt_server(s->target)) {
5227 objt_server(s->target)->counters.failed_resp++;
5228 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5229 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5230
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5231 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5232 rep->analysers = 0;
5233 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5234 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5235 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5236 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5237
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5238 if (!(s->flags & SN_ERR_MASK))
5239 s->flags |= SN_ERR_SRVTO;
5240 if (!(s->flags & SN_FINST_MASK))
5241 s->flags |= SN_FINST_H;
5242 return 0;
5243 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5244
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5245 /* client abort with an abortonclose */
5246 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5247 s->fe->fe_counters.cli_aborts++;
5248 s->be->be_counters.cli_aborts++;
5249 if (objt_server(s->target))
5250 objt_server(s->target)->counters.cli_aborts++;
5251
5252 rep->analysers = 0;
5253 channel_auto_close(rep);
5254
5255 txn->status = 400;
5256 bi_erase(rep);
5257 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5258
5259 if (!(s->flags & SN_ERR_MASK))
5260 s->flags |= SN_ERR_CLICL;
5261 if (!(s->flags & SN_FINST_MASK))
5262 s->flags |= SN_FINST_H;
5263
5264 /* process_session() will take care of the error */
5265 return 0;
5266 }
5267
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5268 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5269 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5270 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5271 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]5272 else if (txn->flags & TX_NOT_FIRST)
5273 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5274
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5275 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5276 if (objt_server(s->target)) {
5277 objt_server(s->target)->counters.failed_resp++;
5278 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5279 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5280
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5281 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5282 rep->analysers = 0;
5283 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5284 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5285 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5286 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5287
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5288 if (!(s->flags & SN_ERR_MASK))
5289 s->flags |= SN_ERR_SRVCL;
5290 if (!(s->flags & SN_FINST_MASK))
5291 s->flags |= SN_FINST_H;
5292 return 0;
5293 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5294
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5295 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5296 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5297 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5298 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]5299 else if (txn->flags & TX_NOT_FIRST)
5300 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5301
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5302 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5303 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5304 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5305
5306 if (!(s->flags & SN_ERR_MASK))
5307 s->flags |= SN_ERR_CLICL;
5308 if (!(s->flags & SN_FINST_MASK))
5309 s->flags |= SN_FINST_H;
5310
5311 /* process_session() will take care of the error */
5312 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5313 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5314
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5315 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5316 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5317 return 0;
5318 }
5319
5320 /* More interesting part now : we know that we have a complete
5321 * response which at least looks like HTTP. We have an indicator
5322 * of each header's length, so we can parse them quickly.
5323 */
5324
5325 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5326 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]5327
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5328 /*
5329 * 1: get the status code
5330 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5331 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5332 if (n < 1 || n > 5)
5333 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5334 /* when the client triggers a 4xx from the server, it's most often due
5335 * to a missing object or permission. These events should be tracked
5336 * because if they happen often, it may indicate a brute force or a
5337 * vulnerability scan.
5338 */
5339 if (n == 4)
5340 session_inc_http_err_ctr(s);
5341
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5342 if (objt_server(s->target))
5343 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5344
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5345 /* check if the response is HTTP/1.1 or above */
5346 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5347 ((rep->buf->p[5] > '1') ||
5348 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5349 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5350
5351 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5352 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]5353
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5354 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5355 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5356
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5357 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]5358
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5359 /* Adjust server's health based on status code. Note: status codes 501
5360 * and 505 are triggered on demand by client request, so we must not
5361 * count them as server failures.
5362 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5363 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5364 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5365 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5366 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5367 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5368 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5369
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5370 /*
5371 * 2: check for cacheability.
5372 */
5373
5374 switch (txn->status) {
5375 case 200:
5376 case 203:
5377 case 206:
5378 case 300:
5379 case 301:
5380 case 410:
5381 /* RFC2616 @13.4:
5382 * "A response received with a status code of
5383 * 200, 203, 206, 300, 301 or 410 MAY be stored
5384 * by a cache (...) unless a cache-control
5385 * directive prohibits caching."
5386 *
5387 * RFC2616 @9.5: POST method :
5388 * "Responses to this method are not cacheable,
5389 * unless the response includes appropriate
5390 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5391 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5392 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5393 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5394 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5395 break;
5396 default:
5397 break;
5398 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5399
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5400 /*
5401 * 3: we may need to capture headers
5402 */
5403 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5404 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5405 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5406 txn->rsp.cap, s->fe->rsp_cap);
5407
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5408 /* 4: determine the transfer-length.
5409 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5410 * the presence of a message-body in a RESPONSE and its transfer length
5411 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5412 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5413 * All responses to the HEAD request method MUST NOT include a
5414 * message-body, even though the presence of entity-header fields
5415 * might lead one to believe they do. All 1xx (informational), 204
5416 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5417 * message-body. All other responses do include a message-body,
5418 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5419 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5420 * 1. Any response which "MUST NOT" include a message-body (such as the
5421 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5422 * always terminated by the first empty line after the header fields,
5423 * regardless of the entity-header fields present in the message.
5424 *
5425 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5426 * the "chunked" transfer-coding (Section 6.2) is used, the
5427 * transfer-length is defined by the use of this transfer-coding.
5428 * If a Transfer-Encoding header field is present and the "chunked"
5429 * transfer-coding is not present, the transfer-length is defined by
5430 * the sender closing the connection.
5431 *
5432 * 3. If a Content-Length header field is present, its decimal value in
5433 * OCTETs represents both the entity-length and the transfer-length.
5434 * If a message is received with both a Transfer-Encoding header
5435 * field and a Content-Length header field, the latter MUST be ignored.
5436 *
5437 * 4. If the message uses the media type "multipart/byteranges", and
5438 * the transfer-length is not otherwise specified, then this self-
5439 * delimiting media type defines the transfer-length. This media
5440 * type MUST NOT be used unless the sender knows that the recipient
5441 * can parse it; the presence in a request of a Range header with
5442 * multiple byte-range specifiers from a 1.1 client implies that the
5443 * client can parse multipart/byteranges responses.
5444 *
5445 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5446 */
5447
5448 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5449 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5450 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5451 * FIXME: should we parse anyway and return an error on chunked encoding ?
5452 */
5453 if (txn->meth == HTTP_METH_HEAD ||
5454 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5455 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5456 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5457 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5458 goto skip_content_length;
5459 }
5460
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5461 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5462 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5463 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5464 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5465 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5466 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5467 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5468 /* bad transfer-encoding (chunked followed by something else) */
5469 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5470 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5471 break;
5472 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5473 }
5474
5475 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5476 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5477 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5478 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5479 signed long long cl;
5480
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5481 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5482 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5483 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5484 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5485
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5486 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5487 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5488 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5489 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5490
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5491 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5492 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5493 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5494 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5495
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5496 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5497 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5498 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5499 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5500
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5501 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5502 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5503 }
5504
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5505 if (s->fe->comp || s->be->comp)
5506 select_compression_response_header(s, rep->buf);
5507
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5508 /* FIXME: we should also implement the multipart/byterange method.
5509 * For now on, we resort to close mode in this case (unknown length).
5510 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5511skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5512
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5513 /* end of job, return OK */
5514 rep->analysers &= ~an_bit;
5515 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5516 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5517 return 1;
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5518
5519 abort_keep_alive:
5520 /* A keep-alive request to the server failed on a network error.
5521 * The client is required to retry. We need to close without returning
5522 * any other information so that the client retries.
5523 */
5524 txn->status = 0;
5525 rep->analysers = 0;
5526 s->req->analysers = 0;
5527 channel_auto_close(rep);
5528 s->logs.logwait = 0;
5529 s->logs.level = 0;
5530 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
5531 bi_erase(rep);
5532 stream_int_retnclose(rep->cons, NULL);
5533 return 0;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5534}
5535
5536/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5537 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5538 * and updates t->rep->analysers. It might make sense to explode it into several
5539 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5540 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5541int http_process_res_common(struct session *t, struct channel *rep, int an_bit, struct proxy *px)
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5542{
5543 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5544 struct http_msg *msg = &txn->rsp;
5545 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5546 struct cond_wordlist *wl;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5547 struct http_res_rule *http_res_last_rule = NULL;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5548
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5549 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5550 now_ms, __FUNCTION__,
5551 t,
5552 rep,
5553 rep->rex, rep->wex,
5554 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5555 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5556 rep->analysers);
5557
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5558 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5559 return 0;
5560
5561 rep->analysers &= ~an_bit;
5562 rep->analyse_exp = TICK_ETERNITY;
5563
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5564 /* Now we have to check if we need to modify the Connection header.
5565 * This is more difficult on the response than it is on the request,
5566 * because we can have two different HTTP versions and we don't know
5567 * how the client will interprete a response. For instance, let's say
5568 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5569 * HTTP/1.1 response without any header. Maybe it will bound itself to
5570 * HTTP/1.0 because it only knows about it, and will consider the lack
5571 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5572 * the lack of header as a keep-alive. Thus we will use two flags
5573 * indicating how a request MAY be understood by the client. In case
5574 * of multiple possibilities, we'll fix the header to be explicit. If
5575 * ambiguous cases such as both close and keepalive are seen, then we
5576 * will fall back to explicit close. Note that we won't take risks with
5577 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5578 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5579 */
5580
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5581 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5582 txn->status == 101)) {
5583 /* Either we've established an explicit tunnel, or we're
5584 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5585 * to understand the next protocols. We have to switch to tunnel
5586 * mode, so that we transfer the request and responses then let
5587 * this protocol pass unmodified. When we later implement specific
5588 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5589 * header which contains information about that protocol for
5590 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5591 */
5592 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5593 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5594 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5595 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5596 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5597 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5598
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5599 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5600 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5601 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5602 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5603
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5604 /* now adjust header transformations depending on current state */
5605 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5606 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5607 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5608 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5609 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5610 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5611 else { /* SCL / KAL */
5612 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5613 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5614 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5615 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5616
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5617 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5618 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5619
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5620 /* Some keep-alive responses are converted to Server-close if
5621 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5622 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5623 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5624 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5625 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5626 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5627 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5628 }
5629
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5630 /* we want to have the response time before we start processing it */
5631 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
5632
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5633 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5634 /*
5635 * 3: we will have to evaluate the filters.
5636 * As opposed to version 1.2, now they will be evaluated in the
5637 * filters order and not in the header order. This means that
5638 * each filter has to be validated among all headers.
5639 *
5640 * Filters are tried with ->be first, then with ->fe if it is
5641 * different from ->be.
5642 */
5643
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5644 cur_proxy = t->be;
5645 while (1) {
5646 struct proxy *rule_set = cur_proxy;
5647
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5648 /* evaluate http-response rules */
5649 if (!http_res_last_rule)
5650 http_res_last_rule = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, t, txn);
5651
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5652 /* try headers filters */
5653 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5654 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5655 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5656 if (objt_server(t->target)) {
5657 objt_server(t->target)->counters.failed_resp++;
5658 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5659 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5660 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5661 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5662 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5663 txn->status = 502;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5664 t->logs.t_data = -1; /* was not a valid response */
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5665 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5666 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5667 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5668 if (!(t->flags & SN_ERR_MASK))
5669 t->flags |= SN_ERR_PRXCOND;
5670 if (!(t->flags & SN_FINST_MASK))
5671 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5672 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5673 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5674 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5675
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5676 /* has the response been denied ? */
5677 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5678 if (objt_server(t->target))
5679 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5680
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5681 t->be->be_counters.denied_resp++;
5682 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5683 if (t->listener->counters)
5684 t->listener->counters->denied_resp++;
5685
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5686 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5687 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5688
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5689 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5690 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5691 if (txn->status < 200)
5692 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5693 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5694 int ret = acl_exec_cond(wl->cond, px, t, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5695 ret = acl_pass(ret);
5696 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5697 ret = !ret;
5698 if (!ret)
5699 continue;
5700 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5701 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5702 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5703 }
5704
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5705 /* check whether we're already working on the frontend */
5706 if (cur_proxy == t->fe)
5707 break;
5708 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5709 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5710
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5711 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5712 * We may be facing a 100-continue response, in which case this
5713 * is not the right response, and we're waiting for the next one.
5714 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5715 * next one.
5716 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5717 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5718 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5719 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5720 msg->msg_state = HTTP_MSG_RPBEFORE;
5721 txn->status = 0;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5722 t->logs.t_data = -1; /* was not a response yet */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5723 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5724 return 1;
5725 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5726 else if (unlikely(txn->status < 200))
5727 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5728
5729 /* we don't have any 1xx status code now */
5730
5731 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5732 * 4: check for server cookie.
5733 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5734 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5735 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5736 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5737
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5738
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5739 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5740 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5741 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5742 if ((t->be->options & PR_O_CHK_CACHE) || (t->be->ck_opts & PR_CK_NOC))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5743 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5744
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5745 /*
5746 * 6: add server cookie in the response if needed
5747 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5748 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5749 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5750 (!(t->flags & SN_DIRECT) ||
5751 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5752 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5753 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5754 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5755 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5756 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5757 /* the server is known, it's not the one the client requested, or the
5758 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5759 * insert a set-cookie here, except if we want to insert only on POST
5760 * requests and this one isn't. Note that servers which don't have cookies
5761 * (eg: some backup servers) will return a full cookie removal request.
5762 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5763 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5764 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5765 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5766 t->be->cookie_name);
5767 }
5768 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5769 chunk_printf(&trash, "Set-Cookie: %s=%s", t->be->cookie_name, objt_server(t->target)->cookie);
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5770
5771 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5772 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5773 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5774 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5775 trash.len += 5;
5776
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5777 if (t->be->cookie_maxlife) {
5778 /* emit first_date, which is either the original one or
5779 * the current date.
5780 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5781 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5782 s30tob64(txn->cookie_first_date ?
5783 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5784 (date.tv_sec+3) >> 2, trash.str + trash.len);
5785 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5786 }
5787 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5788 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5789 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5790
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5791 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5792 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5793
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5794 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5795 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5796
5797 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5798 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5799
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5800 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5801 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5802
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5803 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5804 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5805 /* the server did not change, only the date was updated */
5806 txn->flags |= TX_SCK_UPDATED;
5807 else
5808 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5809
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5810 /* Here, we will tell an eventual cache on the client side that we don't
5811 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5812 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5813 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5814 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5815 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5816
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5817 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5818
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5819 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5820 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5821 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5822 }
5823 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5824
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5825 /*
5826 * 7: check if result will be cacheable with a cookie.
5827 * We'll block the response if security checks have caught
5828 * nasty things such as a cacheable cookie.
5829 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5830 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5831 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5832 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5833
5834 /* we're in presence of a cacheable response containing
5835 * a set-cookie header. We'll block it as requested by
5836 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5837 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5838 if (objt_server(t->target))
5839 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5840
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5841 t->be->be_counters.denied_resp++;
5842 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5843 if (t->listener->counters)
5844 t->listener->counters->denied_resp++;
5845
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5846 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5847 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5848 send_log(t->be, LOG_ALERT,
5849 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5850 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5851 goto return_srv_prx_502;
5852 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5853
5854 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5855 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5856 * If an "Upgrade" token is found, the header is left untouched in order
5857 * not to have to deal with some client bugs : some of them fail an upgrade
5858 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5859 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5860 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5861 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5862 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5863 unsigned int want_flags = 0;
5864
5865 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5866 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5867 /* we want a keep-alive response here. Keep-alive header
5868 * required if either side is not 1.1.
5869 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5870 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5871 want_flags |= TX_CON_KAL_SET;
5872 }
5873 else {
5874 /* we want a close response here. Close header required if
5875 * the server is 1.1, regardless of the client.
5876 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5877 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5878 want_flags |= TX_CON_CLO_SET;
5879 }
5880
5881 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5882 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5883 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5884
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5885 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5886 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5887 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5888 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5889
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5890 /*************************************************************
5891 * OK, that's finished for the headers. We have done what we *
5892 * could. Let's switch to the DATA state. *
5893 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5894
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5895 /* if the user wants to log as soon as possible, without counting
5896 * bytes from the server, then this is the right moment. We have
5897 * to temporarily assign bytes_out to log what we currently have.
5898 */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]5899 if (!LIST_ISEMPTY(&t->fe->logformat) && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5900 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5901 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5902 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5903 t->logs.bytes_out = 0;
5904 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5905
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5906 /* Note: we must not try to cheat by jumping directly to DATA,
5907 * otherwise we would not let the client side wake up.
5908 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5909
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5910 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5911 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5912 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5913}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5914
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5915/* This function is an analyser which forwards response body (including chunk
5916 * sizes if any). It is called as soon as we must forward, even if we forward
5917 * zero byte. The only situation where it must not be called is when we're in
5918 * tunnel mode and we want to forward till the close. It's used both to forward
5919 * remaining data and to resync after end of body. It expects the msg_state to
5920 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5921 * 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]5922 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5923 * bytes of pending data + the headers if not already done (between sol and sov).
5924 * It eventually adjusts sol to match sov after the data in between have been sent.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5925 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5926int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5927{
5928 struct http_txn *txn = &s->txn;
5929 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5930 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5931 static struct buffer *tmpbuf = NULL;
5932 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5933 int consumed_data = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5934 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5935
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5936 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5937 return 0;
5938
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5939 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]5940 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5941 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5942 /* Output closed while we were sending data. We must abort and
5943 * wake the other side up.
5944 */
5945 msg->msg_state = HTTP_MSG_ERROR;
5946 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5947 return 1;
5948 }
5949
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5950 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5951 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5952
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5953 /* this is the first time we need the compression buffer */
5954 if (s->comp_algo != NULL && tmpbuf == NULL) {
5955 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5956 goto aborted_xfer; /* no memory */
5957 }
5958
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5959 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5960 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5961 * rep->buf.p still points to the beginning of the message and msg->sol
5962 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5963 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5964 channel_forward(res, msg->sov);
5965 msg->next = 0;
5966 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5967
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5968 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5969 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5970 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5971 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5972 }
5973
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5974 if (s->comp_algo != NULL) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5975 ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5976 if (ret < 0)
5977 goto missing_data; /* not enough spaces in buffers */
5978 compressing = 1;
5979 }
5980
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5981 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5982 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5983 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5984 if (s->comp_algo == NULL) {
5985 bytes = msg->sov - msg->sol;
5986 if (msg->chunk_len || bytes) {
5987 msg->sol = msg->sov;
5988 msg->next -= bytes; /* will be forwarded */
5989 msg->chunk_len += bytes;
5990 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5991 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5992 }
5993
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5994 switch (msg->msg_state - HTTP_MSG_DATA) {
5995 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5996 if (compressing) {
5997 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
5998 if (ret < 0)
5999 goto aborted_xfer;
6000 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6001
6002 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6003 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6004
6005 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6006 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6007 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6008 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6009 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6010 if (compressing && consumed_data) {
6011 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6012 compressing = 0;
6013 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6014 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6015 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6016 /* fall through for HTTP_MSG_CHUNK_CRLF */
6017
6018 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6019 /* we want the CRLF after the data */
6020
6021 ret = http_skip_chunk_crlf(msg);
6022 if (ret == 0)
6023 goto missing_data;
6024 else if (ret < 0) {
6025 if (msg->err_pos >= 0)
6026 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
6027 goto return_bad_res;
6028 }
6029 /* skipping data in buffer for compression */
6030 if (compressing) {
6031 b_adv(res->buf, msg->next);
6032 msg->next = 0;
6033 msg->sov = 0;
6034 msg->sol = 0;
6035 }
6036 /* we're in MSG_CHUNK_SIZE now, fall through */
6037
6038 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6039 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6040 * set ->sov and ->next to point to the body and switch to DATA or
6041 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6042 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6043
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6044 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6045 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6046 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6047 else if (ret < 0) {
6048 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6049 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]6050 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6051 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6052 if (compressing) {
6053 if (likely(msg->chunk_len > 0)) {
6054 /* skipping data if we are in compression mode */
6055 b_adv(res->buf, msg->next);
6056 msg->next = 0;
6057 msg->sov = 0;
6058 msg->sol = 0;
6059 } else {
6060 if (consumed_data) {
6061 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6062 compressing = 0;
6063 }
6064 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6065 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6066 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6067 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6068
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6069 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
6070 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6071 if (ret == 0)
6072 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6073 else if (ret < 0) {
6074 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6075 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]6076 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6077 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]6078 if (s->comp_algo != NULL) {
6079 /* forwarding trailers */
6080 channel_forward(res, msg->next);
6081 msg->next = 0;
6082 }
Willy Tarreau2d43e182013-04-03 00:22:25 +0200[diff] [blame]6083 /* we're in HTTP_MSG_DONE now, but we might still have
6084 * some data pending, so let's loop over once.
6085 */
6086 break;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6087
6088 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6089 /* other states, DONE...TUNNEL */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6090
6091 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6092 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6093 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6094 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6095 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6096 if (http_resync_states(s)) {
6097 http_silent_debug(__LINE__, s);
6098 /* some state changes occurred, maybe the analyser
6099 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6100 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6101 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6102 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6103 /* response errors are most likely due to
6104 * the client aborting the transfer.
6105 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6106 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6107 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6108 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6109 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6110 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6111 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6112 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6113 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6114 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6115 }
6116 }
6117
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6118 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6119 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6120 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
6121 compressing = 0;
6122 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6123
6124 if (res->flags & CF_SHUTW)
6125 goto aborted_xfer;
6126
6127 /* stop waiting for data if the input is closed before the end. If the
6128 * client side was already closed, it means that the client has aborted,
6129 * so we don't want to count this as a server abort. Otherwise it's a
6130 * server abort.
6131 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6132 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6133 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
6134 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6135 if (!(s->flags & SN_ERR_MASK))
6136 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6137 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6138 if (objt_server(s->target))
6139 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6140 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6141 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6142
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6143 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6144 if (!s->req->analysers)
6145 goto return_bad_res;
6146
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]6147 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6148 if (s->comp_algo == NULL) {
6149 bytes = msg->sov - msg->sol;
6150 if (msg->chunk_len || bytes) {
6151 msg->sol = msg->sov;
6152 msg->next -= bytes; /* will be forwarded */
6153 msg->chunk_len += bytes;
6154 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6155 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6156 }
6157
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6158 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6159 * 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]6160 * Similarly, with keep-alive on the client side, we don't want to forward a
6161 * close.
6162 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6163 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6164 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6165 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6166 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6167
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6168 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6169 * 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]6170 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6171 * modes are already handled by the stream sock layer. We must not do
6172 * this in content-length mode because it could present the MSG_MORE
6173 * flag with the last block of forwarded data, which would cause an
6174 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6175 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6176 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6177 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6178
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6179 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6180 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6181 return 0;
6182
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6183 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6184 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6185 if (objt_server(s->target))
6186 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6187
6188 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6189 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6190 /* don't send any error message as we're in the body */
6191 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6192 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6193 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]6194 if (objt_server(s->target))
6195 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6196
6197 if (!(s->flags & SN_ERR_MASK))
6198 s->flags |= SN_ERR_PRXCOND;
6199 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6200 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6201 return 0;
6202
6203 aborted_xfer:
6204 txn->rsp.msg_state = HTTP_MSG_ERROR;
6205 /* don't send any error message as we're in the body */
6206 stream_int_retnclose(res->cons, NULL);
6207 res->analysers = 0;
6208 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6209
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6210 s->fe->fe_counters.cli_aborts++;
6211 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6212 if (objt_server(s->target))
6213 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6214
6215 if (!(s->flags & SN_ERR_MASK))
6216 s->flags |= SN_ERR_CLICL;
6217 if (!(s->flags & SN_FINST_MASK))
6218 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6219 return 0;
6220}
6221
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6222/* Iterate the same filter through all request headers.
6223 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6224 * Since it can manage the switch to another backend, it updates the per-proxy
6225 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6226 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6227int apply_filter_to_req_headers(struct session *t, struct channel *req, struct hdr_exp *exp)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6228{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6229 char term;
6230 char *cur_ptr, *cur_end, *cur_next;
6231 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6232 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6233 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6234 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6235
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6236 last_hdr = 0;
6237
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6238 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6239 old_idx = 0;
6240
6241 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6242 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6243 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6244 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6245 (exp->action == ACT_ALLOW ||
6246 exp->action == ACT_DENY ||
6247 exp->action == ACT_TARPIT))
6248 return 0;
6249
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6250 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6251 if (!cur_idx)
6252 break;
6253
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6254 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6255 cur_ptr = cur_next;
6256 cur_end = cur_ptr + cur_hdr->len;
6257 cur_next = cur_end + cur_hdr->cr + 1;
6258
6259 /* Now we have one header between cur_ptr and cur_end,
6260 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6261 */
6262
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6263 /* The annoying part is that pattern matching needs
6264 * that we modify the contents to null-terminate all
6265 * strings before testing them.
6266 */
6267
6268 term = *cur_end;
6269 *cur_end = '\0';
6270
6271 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6272 switch (exp->action) {
6273 case ACT_SETBE:
6274 /* It is not possible to jump a second time.
6275 * FIXME: should we return an HTTP/500 here so that
6276 * the admin knows there's a problem ?
6277 */
6278 if (t->be != t->fe)
6279 break;
6280
6281 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6282 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6283 last_hdr = 1;
6284 break;
6285
6286 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6287 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6288 last_hdr = 1;
6289 break;
6290
6291 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6292 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6293 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6294 break;
6295
6296 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6297 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6298 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6299 break;
6300
6301 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6302 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6303 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6304 /* FIXME: if the user adds a newline in the replacement, the
6305 * index will not be recalculated for now, and the new line
6306 * will not be counted as a new header.
6307 */
6308
6309 cur_end += delta;
6310 cur_next += delta;
6311 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6312 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6313 break;
6314
6315 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6316 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6317 cur_next += delta;
6318
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6319 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6320 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6321 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6322 cur_hdr->len = 0;
6323 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6324 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6325 break;
6326
6327 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6328 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6329 if (cur_end)
6330 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6331
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6332 /* keep the link from this header to next one in case of later
6333 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6334 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6335 old_idx = cur_idx;
6336 }
6337 return 0;
6338}
6339
6340
6341/* Apply the filter to the request line.
6342 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6343 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6344 * Since it can manage the switch to another backend, it updates the per-proxy
6345 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6346 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6347int apply_filter_to_req_line(struct session *t, struct channel *req, struct hdr_exp *exp)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6348{
6349 char term;
6350 char *cur_ptr, *cur_end;
6351 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6352 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6353 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6354
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6355 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6356 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6357 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6358 (exp->action == ACT_ALLOW ||
6359 exp->action == ACT_DENY ||
6360 exp->action == ACT_TARPIT))
6361 return 0;
6362 else if (exp->action == ACT_REMOVE)
6363 return 0;
6364
6365 done = 0;
6366
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6367 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6368 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6369
6370 /* Now we have the request line between cur_ptr and cur_end */
6371
6372 /* The annoying part is that pattern matching needs
6373 * that we modify the contents to null-terminate all
6374 * strings before testing them.
6375 */
6376
6377 term = *cur_end;
6378 *cur_end = '\0';
6379
6380 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6381 switch (exp->action) {
6382 case ACT_SETBE:
6383 /* It is not possible to jump a second time.
6384 * FIXME: should we return an HTTP/500 here so that
6385 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6386 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6387 if (t->be != t->fe)
6388 break;
6389
6390 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6391 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6392 done = 1;
6393 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6394
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6395 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6396 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6397 done = 1;
6398 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6399
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6400 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6401 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6402 done = 1;
6403 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6404
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6405 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6406 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6407 done = 1;
6408 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6409
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6410 case ACT_REPLACE:
6411 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6412 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6413 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6414 /* FIXME: if the user adds a newline in the replacement, the
6415 * index will not be recalculated for now, and the new line
6416 * will not be counted as a new header.
6417 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6418
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6419 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6420 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6421 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6422 HTTP_MSG_RQMETH,
6423 cur_ptr, cur_end + 1,
6424 NULL, NULL);
6425 if (unlikely(!cur_end))
6426 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6427
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6428 /* we have a full request and we know that we have either a CR
6429 * or an LF at <ptr>.
6430 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6431 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6432 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]6433 /* there is no point trying this regex on headers */
6434 return 1;
6435 }
6436 }
6437 *cur_end = term; /* restore the string terminator */
6438 return done;
6439}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6440
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6441
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6442
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6443/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6444 * 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]6445 * 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]6446 * unparsable request. Since it can manage the switch to another backend, it
6447 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6448 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6449int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6450{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6451 struct http_txn *txn = &s->txn;
6452 struct hdr_exp *exp;
6453
6454 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6455 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6456
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6457 /*
6458 * The interleaving of transformations and verdicts
6459 * makes it difficult to decide to continue or stop
6460 * the evaluation.
6461 */
6462
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6463 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6464 break;
6465
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6466 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6467 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6468 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6469 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6470
6471 /* if this filter had a condition, evaluate it now and skip to
6472 * next filter if the condition does not match.
6473 */
6474 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6475 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]6476 ret = acl_pass(ret);
6477 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6478 ret = !ret;
6479
6480 if (!ret)
6481 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6482 }
6483
6484 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6485 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6486 if (unlikely(ret < 0))
6487 return -1;
6488
6489 if (likely(ret == 0)) {
6490 /* The filter did not match the request, it can be
6491 * iterated through all headers.
6492 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6493 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6494 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6495 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6496 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6497}
6498
6499
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6500
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6501/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6502 * Try to retrieve the server associated to the appsession.
6503 * If the server is found, it's assigned to the session.
6504 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6505void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6506 struct http_txn *txn = &t->txn;
6507 appsess *asession = NULL;
6508 char *sessid_temp = NULL;
6509
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6510 if (len > t->be->appsession_len) {
6511 len = t->be->appsession_len;
6512 }
6513
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6514 if (t->be->options2 & PR_O2_AS_REQL) {
6515 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6516 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6517 /* 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]6518 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6519 }
6520
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6521 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6522 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6523 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6524 return;
6525 }
6526
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6527 memcpy(txn->sessid, buf, len);
6528 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6529 }
6530
6531 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6532 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6533 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6534 return;
6535 }
6536
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6537 memcpy(sessid_temp, buf, len);
6538 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6539
6540 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6541 /* free previously allocated memory */
6542 pool_free2(apools.sessid, sessid_temp);
6543
6544 if (asession != NULL) {
6545 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6546 if (!(t->be->options2 & PR_O2_AS_REQL))
6547 asession->request_count++;
6548
6549 if (asession->serverid != NULL) {
6550 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6551
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6552 while (srv) {
6553 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6554 if ((srv->state & SRV_RUNNING) ||
6555 (t->be->options & PR_O_PERSIST) ||
6556 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6557 /* we found the server and it's usable */
6558 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6559 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6560 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6561 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6562
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6563 break;
6564 } else {
6565 txn->flags &= ~TX_CK_MASK;
6566 txn->flags |= TX_CK_DOWN;
6567 }
6568 }
6569 srv = srv->next;
6570 }
6571 }
6572 }
6573}
6574
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6575/* Find the end of a cookie value contained between <s> and <e>. It works the
6576 * same way as with headers above except that the semi-colon also ends a token.
6577 * See RFC2965 for more information. Note that it requires a valid header to
6578 * return a valid result.
6579 */
6580char *find_cookie_value_end(char *s, const char *e)
6581{
6582 int quoted, qdpair;
6583
6584 quoted = qdpair = 0;
6585 for (; s < e; s++) {
6586 if (qdpair) qdpair = 0;
6587 else if (quoted) {
6588 if (*s == '\\') qdpair = 1;
6589 else if (*s == '"') quoted = 0;
6590 }
6591 else if (*s == '"') quoted = 1;
6592 else if (*s == ',' || *s == ';') return s;
6593 }
6594 return s;
6595}
6596
6597/* Delete a value in a header between delimiters <from> and <next> in buffer
6598 * <buf>. The number of characters displaced is returned, and the pointer to
6599 * the first delimiter is updated if required. The function tries as much as
6600 * possible to respect the following principles :
6601 * - replace <from> delimiter by the <next> one unless <from> points to a
6602 * colon, in which case <next> is simply removed
6603 * - set exactly one space character after the new first delimiter, unless
6604 * there are not enough characters in the block being moved to do so.
6605 * - remove unneeded spaces before the previous delimiter and after the new
6606 * one.
6607 *
6608 * It is the caller's responsibility to ensure that :
6609 * - <from> points to a valid delimiter or the colon ;
6610 * - <next> points to a valid delimiter or the final CR/LF ;
6611 * - there are non-space chars before <from> ;
6612 * - there is a CR/LF at or after <next>.
6613 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6614int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6615{
6616 char *prev = *from;
6617
6618 if (*prev == ':') {
6619 /* We're removing the first value, preserve the colon and add a
6620 * space if possible.
6621 */
6622 if (!http_is_crlf[(unsigned char)*next])
6623 next++;
6624 prev++;
6625 if (prev < next)
6626 *prev++ = ' ';
6627
6628 while (http_is_spht[(unsigned char)*next])
6629 next++;
6630 } else {
6631 /* Remove useless spaces before the old delimiter. */
6632 while (http_is_spht[(unsigned char)*(prev-1)])
6633 prev--;
6634 *from = prev;
6635
6636 /* copy the delimiter and if possible a space if we're
6637 * not at the end of the line.
6638 */
6639 if (!http_is_crlf[(unsigned char)*next]) {
6640 *prev++ = *next++;
6641 if (prev + 1 < next)
6642 *prev++ = ' ';
6643 while (http_is_spht[(unsigned char)*next])
6644 next++;
6645 }
6646 }
6647 return buffer_replace2(buf, prev, next, NULL, 0);
6648}
6649
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6650/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6651 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6652 * desirable to call it only when needed. This code is quite complex because
6653 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6654 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6655 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6656void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6657{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6658 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6659 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6660 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6661 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6662 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6663
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6664 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6665 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6666 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6667
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6668 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6669 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6670 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6671
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6672 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6673 hdr_beg = hdr_next;
6674 hdr_end = hdr_beg + cur_hdr->len;
6675 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6676
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6677 /* We have one full header between hdr_beg and hdr_end, and the
6678 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6679 * "Cookie:" headers.
6680 */
6681
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6682 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6683 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6684 old_idx = cur_idx;
6685 continue;
6686 }
6687
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6688 del_from = NULL; /* nothing to be deleted */
6689 preserve_hdr = 0; /* assume we may kill the whole header */
6690
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6691 /* Now look for cookies. Conforming to RFC2109, we have to support
6692 * attributes whose name begin with a '$', and associate them with
6693 * the right cookie, if we want to delete this cookie.
6694 * So there are 3 cases for each cookie read :
6695 * 1) it's a special attribute, beginning with a '$' : ignore it.
6696 * 2) it's a server id cookie that we *MAY* want to delete : save
6697 * some pointers on it (last semi-colon, beginning of cookie...)
6698 * 3) it's an application cookie : we *MAY* have to delete a previous
6699 * "special" cookie.
6700 * At the end of loop, if a "special" cookie remains, we may have to
6701 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6702 * *MUST* delete it.
6703 *
6704 * Note: RFC2965 is unclear about the processing of spaces around
6705 * the equal sign in the ATTR=VALUE form. A careful inspection of
6706 * the RFC explicitly allows spaces before it, and not within the
6707 * tokens (attrs or values). An inspection of RFC2109 allows that
6708 * too but section 10.1.3 lets one think that spaces may be allowed
6709 * after the equal sign too, resulting in some (rare) buggy
6710 * implementations trying to do that. So let's do what servers do.
6711 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6712 * allowed quoted strings in values, with any possible character
6713 * after a backslash, including control chars and delimitors, which
6714 * causes parsing to become ambiguous. Browsers also allow spaces
6715 * within values even without quotes.
6716 *
6717 * We have to keep multiple pointers in order to support cookie
6718 * removal at the beginning, middle or end of header without
6719 * corrupting the header. All of these headers are valid :
6720 *
6721 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6722 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6723 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6724 * | | | | | | | | |
6725 * | | | | | | | | hdr_end <--+
6726 * | | | | | | | +--> next
6727 * | | | | | | +----> val_end
6728 * | | | | | +-----------> val_beg
6729 * | | | | +--------------> equal
6730 * | | | +----------------> att_end
6731 * | | +---------------------> att_beg
6732 * | +--------------------------> prev
6733 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6734 */
6735
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6736 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6737 /* Iterate through all cookies on this line */
6738
6739 /* find att_beg */
6740 att_beg = prev + 1;
6741 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6742 att_beg++;
6743
6744 /* find att_end : this is the first character after the last non
6745 * space before the equal. It may be equal to hdr_end.
6746 */
6747 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6748
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6749 while (equal < hdr_end) {
6750 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6751 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6752 if (http_is_spht[(unsigned char)*equal++])
6753 continue;
6754 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6755 }
6756
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6757 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6758 * is between <att_beg> and <equal>, both may be identical.
6759 */
6760
6761 /* look for end of cookie if there is an equal sign */
6762 if (equal < hdr_end && *equal == '=') {
6763 /* look for the beginning of the value */
6764 val_beg = equal + 1;
6765 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6766 val_beg++;
6767
6768 /* find the end of the value, respecting quotes */
6769 next = find_cookie_value_end(val_beg, hdr_end);
6770
6771 /* make val_end point to the first white space or delimitor after the value */
6772 val_end = next;
6773 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6774 val_end--;
6775 } else {
6776 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6777 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6778
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6779 /* We have nothing to do with attributes beginning with '$'. However,
6780 * they will automatically be removed if a header before them is removed,
6781 * since they're supposed to be linked together.
6782 */
6783 if (*att_beg == '$')
6784 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6785
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6786 /* Ignore cookies with no equal sign */
6787 if (equal == next) {
6788 /* This is not our cookie, so we must preserve it. But if we already
6789 * scheduled another cookie for removal, we cannot remove the
6790 * complete header, but we can remove the previous block itself.
6791 */
6792 preserve_hdr = 1;
6793 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6794 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6795 val_end += delta;
6796 next += delta;
6797 hdr_end += delta;
6798 hdr_next += delta;
6799 cur_hdr->len += delta;
6800 http_msg_move_end(&txn->req, delta);
6801 prev = del_from;
6802 del_from = NULL;
6803 }
6804 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6805 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6806
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6807 /* if there are spaces around the equal sign, we need to
6808 * strip them otherwise we'll get trouble for cookie captures,
6809 * or even for rewrites. Since this happens extremely rarely,
6810 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6811 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6812 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6813 int stripped_before = 0;
6814 int stripped_after = 0;
6815
6816 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6817 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6818 equal += stripped_before;
6819 val_beg += stripped_before;
6820 }
6821
6822 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6823 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6824 val_beg += stripped_after;
6825 stripped_before += stripped_after;
6826 }
6827
6828 val_end += stripped_before;
6829 next += stripped_before;
6830 hdr_end += stripped_before;
6831 hdr_next += stripped_before;
6832 cur_hdr->len += stripped_before;
6833 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6834 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6835 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6836
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6837 /* First, let's see if we want to capture this cookie. We check
6838 * that we don't already have a client side cookie, because we
6839 * can only capture one. Also as an optimisation, we ignore
6840 * cookies shorter than the declared name.
6841 */
6842 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6843 (val_end - att_beg >= t->fe->capture_namelen) &&
6844 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6845 int log_len = val_end - att_beg;
6846
6847 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6848 Alert("HTTP logging : out of memory.\n");
6849 } else {
6850 if (log_len > t->fe->capture_len)
6851 log_len = t->fe->capture_len;
6852 memcpy(txn->cli_cookie, att_beg, log_len);
6853 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6854 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6855 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6856
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6857 /* Persistence cookies in passive, rewrite or insert mode have the
6858 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6859 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6860 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6861 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6862 * For cookies in prefix mode, the form is :
6863 *
6864 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6865 */
6866 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6867 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6868 struct server *srv = t->be->srv;
6869 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6870
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6871 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6872 * have the server ID between val_beg and delim, and the original cookie between
6873 * delim+1 and val_end. Otherwise, delim==val_end :
6874 *
6875 * Cookie: NAME=SRV; # in all but prefix modes
6876 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6877 * | || || | |+-> next
6878 * | || || | +--> val_end
6879 * | || || +---------> delim
6880 * | || |+------------> val_beg
6881 * | || +-------------> att_end = equal
6882 * | |+-----------------> att_beg
6883 * | +------------------> prev
6884 * +-------------------------> hdr_beg
6885 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6886
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6887 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6888 for (delim = val_beg; delim < val_end; delim++)
6889 if (*delim == COOKIE_DELIM)
6890 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6891 } else {
6892 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6893 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6894 /* Now check if the cookie contains a date field, which would
6895 * appear after a vertical bar ('|') just after the server name
6896 * and before the delimiter.
6897 */
6898 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6899 if (vbar1) {
6900 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6901 * right is the last seen date. It is a base64 encoded
6902 * 30-bit value representing the UNIX date since the
6903 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6904 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6905 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6906 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6907 if (val_end - vbar1 >= 5) {
6908 val = b64tos30(vbar1);
6909 if (val > 0)
6910 txn->cookie_last_date = val << 2;
6911 }
6912 /* look for a second vertical bar */
6913 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6914 if (vbar1 && (val_end - vbar1 > 5)) {
6915 val = b64tos30(vbar1 + 1);
6916 if (val > 0)
6917 txn->cookie_first_date = val << 2;
6918 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6919 }
6920 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6921
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6922 /* if the cookie has an expiration date and the proxy wants to check
6923 * it, then we do that now. We first check if the cookie is too old,
6924 * then only if it has expired. We detect strict overflow because the
6925 * time resolution here is not great (4 seconds). Cookies with dates
6926 * in the future are ignored if their offset is beyond one day. This
6927 * allows an admin to fix timezone issues without expiring everyone
6928 * and at the same time avoids keeping unwanted side effects for too
6929 * long.
6930 */
6931 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6932 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6933 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6934 txn->flags &= ~TX_CK_MASK;
6935 txn->flags |= TX_CK_OLD;
6936 delim = val_beg; // let's pretend we have not found the cookie
6937 txn->cookie_first_date = 0;
6938 txn->cookie_last_date = 0;
6939 }
6940 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6941 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6942 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6943 txn->flags &= ~TX_CK_MASK;
6944 txn->flags |= TX_CK_EXPIRED;
6945 delim = val_beg; // let's pretend we have not found the cookie
6946 txn->cookie_first_date = 0;
6947 txn->cookie_last_date = 0;
6948 }
6949
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6950 /* Here, we'll look for the first running server which supports the cookie.
6951 * This allows to share a same cookie between several servers, for example
6952 * to dedicate backup servers to specific servers only.
6953 * However, to prevent clients from sticking to cookie-less backup server
6954 * when they have incidentely learned an empty cookie, we simply ignore
6955 * empty cookies and mark them as invalid.
6956 * The same behaviour is applied when persistence must be ignored.
6957 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6958 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6959 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6960
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6961 while (srv) {
6962 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6963 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6964 if ((srv->state & SRV_RUNNING) ||
6965 (t->be->options & PR_O_PERSIST) ||
6966 (t->flags & SN_FORCE_PRST)) {
6967 /* we found the server and we can use it */
6968 txn->flags &= ~TX_CK_MASK;
6969 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6970 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6971 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6972 break;
6973 } else {
6974 /* we found a server, but it's down,
6975 * mark it as such and go on in case
6976 * another one is available.
6977 */
6978 txn->flags &= ~TX_CK_MASK;
6979 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6980 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6981 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6982 srv = srv->next;
6983 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6984
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6985 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6986 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6987 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6988 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6989 txn->flags |= TX_CK_UNUSED;
6990 else
6991 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6992 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6993
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6994 /* depending on the cookie mode, we may have to either :
6995 * - delete the complete cookie if we're in insert+indirect mode, so that
6996 * the server never sees it ;
6997 * - remove the server id from the cookie value, and tag the cookie as an
6998 * application cookie so that it does not get accidentely removed later,
6999 * if we're in cookie prefix mode
7000 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7001 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7002 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7003
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7004 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7005 val_end += delta;
7006 next += delta;
7007 hdr_end += delta;
7008 hdr_next += delta;
7009 cur_hdr->len += delta;
7010 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7011
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7012 del_from = NULL;
7013 preserve_hdr = 1; /* we want to keep this cookie */
7014 }
7015 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7016 (t->be->ck_opts & (PR_CK_INS | PR_CK_IND)) == (PR_CK_INS | PR_CK_IND)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7017 del_from = prev;
7018 }
7019 } else {
7020 /* This is not our cookie, so we must preserve it. But if we already
7021 * scheduled another cookie for removal, we cannot remove the
7022 * complete header, but we can remove the previous block itself.
7023 */
7024 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7025
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7026 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7027 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7028 if (att_beg >= del_from)
7029 att_beg += delta;
7030 if (att_end >= del_from)
7031 att_end += delta;
7032 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7033 val_end += delta;
7034 next += delta;
7035 hdr_end += delta;
7036 hdr_next += delta;
7037 cur_hdr->len += delta;
7038 http_msg_move_end(&txn->req, delta);
7039 prev = del_from;
7040 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7041 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7042 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7043
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7044 /* Look for the appsession cookie unless persistence must be ignored */
7045 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
7046 int cmp_len, value_len;
7047 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7048
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7049 if (t->be->options2 & PR_O2_AS_PFX) {
7050 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7051 value_begin = att_beg + t->be->appsession_name_len;
7052 value_len = val_end - att_beg - t->be->appsession_name_len;
7053 } else {
7054 cmp_len = att_end - att_beg;
7055 value_begin = val_beg;
7056 value_len = val_end - val_beg;
7057 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7058
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7059 /* let's see if the cookie is our appcookie */
7060 if (cmp_len == t->be->appsession_name_len &&
7061 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
7062 manage_client_side_appsession(t, value_begin, value_len);
7063 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7064 }
7065
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7066 /* continue with next cookie on this header line */
7067 att_beg = next;
7068 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7069
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7070 /* There are no more cookies on this line.
7071 * We may still have one (or several) marked for deletion at the
7072 * end of the line. We must do this now in two ways :
7073 * - if some cookies must be preserved, we only delete from the
7074 * mark to the end of line ;
7075 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7076 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7077 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7078 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7079 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7080 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7081 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7082 cur_hdr->len += delta;
7083 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7084 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7085
7086 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7087 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7088 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7089 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7090 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7091 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7092 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7093 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7094 }
7095
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7096 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7097 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7098 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7099}
7100
7101
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7102/* Iterate the same filter through all response headers contained in <rtr>.
7103 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7104 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7105int apply_filter_to_resp_headers(struct session *t, struct channel *rtr, struct hdr_exp *exp)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7106{
7107 char term;
7108 char *cur_ptr, *cur_end, *cur_next;
7109 int cur_idx, old_idx, last_hdr;
7110 struct http_txn *txn = &t->txn;
7111 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7112 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7113
7114 last_hdr = 0;
7115
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7116 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7117 old_idx = 0;
7118
7119 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7120 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7121 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7122 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7123 (exp->action == ACT_ALLOW ||
7124 exp->action == ACT_DENY))
7125 return 0;
7126
7127 cur_idx = txn->hdr_idx.v[old_idx].next;
7128 if (!cur_idx)
7129 break;
7130
7131 cur_hdr = &txn->hdr_idx.v[cur_idx];
7132 cur_ptr = cur_next;
7133 cur_end = cur_ptr + cur_hdr->len;
7134 cur_next = cur_end + cur_hdr->cr + 1;
7135
7136 /* Now we have one header between cur_ptr and cur_end,
7137 * and the next header starts at cur_next.
7138 */
7139
7140 /* The annoying part is that pattern matching needs
7141 * that we modify the contents to null-terminate all
7142 * strings before testing them.
7143 */
7144
7145 term = *cur_end;
7146 *cur_end = '\0';
7147
7148 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7149 switch (exp->action) {
7150 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7151 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7152 last_hdr = 1;
7153 break;
7154
7155 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7156 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7157 last_hdr = 1;
7158 break;
7159
7160 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7161 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7162 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7163 /* FIXME: if the user adds a newline in the replacement, the
7164 * index will not be recalculated for now, and the new line
7165 * will not be counted as a new header.
7166 */
7167
7168 cur_end += delta;
7169 cur_next += delta;
7170 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7171 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7172 break;
7173
7174 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7175 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7176 cur_next += delta;
7177
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7178 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7179 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7180 txn->hdr_idx.used--;
7181 cur_hdr->len = 0;
7182 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7183 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7184 break;
7185
7186 }
7187 }
7188 if (cur_end)
7189 *cur_end = term; /* restore the string terminator */
7190
7191 /* keep the link from this header to next one in case of later
7192 * removal of next header.
7193 */
7194 old_idx = cur_idx;
7195 }
7196 return 0;
7197}
7198
7199
7200/* Apply the filter to the status line in the response buffer <rtr>.
7201 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7202 * or -1 if a replacement resulted in an invalid status line.
7203 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7204int apply_filter_to_sts_line(struct session *t, struct channel *rtr, struct hdr_exp *exp)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7205{
7206 char term;
7207 char *cur_ptr, *cur_end;
7208 int done;
7209 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7210 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7211
7212
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7213 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7214 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7215 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7216 (exp->action == ACT_ALLOW ||
7217 exp->action == ACT_DENY))
7218 return 0;
7219 else if (exp->action == ACT_REMOVE)
7220 return 0;
7221
7222 done = 0;
7223
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7224 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7225 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7226
7227 /* Now we have the status line between cur_ptr and cur_end */
7228
7229 /* The annoying part is that pattern matching needs
7230 * that we modify the contents to null-terminate all
7231 * strings before testing them.
7232 */
7233
7234 term = *cur_end;
7235 *cur_end = '\0';
7236
7237 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7238 switch (exp->action) {
7239 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7240 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7241 done = 1;
7242 break;
7243
7244 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7245 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7246 done = 1;
7247 break;
7248
7249 case ACT_REPLACE:
7250 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7251 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7252 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7253 /* FIXME: if the user adds a newline in the replacement, the
7254 * index will not be recalculated for now, and the new line
7255 * will not be counted as a new header.
7256 */
7257
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7258 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7259 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7260 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7261 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7262 cur_ptr, cur_end + 1,
7263 NULL, NULL);
7264 if (unlikely(!cur_end))
7265 return -1;
7266
7267 /* we have a full respnse and we know that we have either a CR
7268 * or an LF at <ptr>.
7269 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7270 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]7271 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]7272 /* there is no point trying this regex on headers */
7273 return 1;
7274 }
7275 }
7276 *cur_end = term; /* restore the string terminator */
7277 return done;
7278}
7279
7280
7281
7282/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7283 * 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]7284 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7285 * unparsable response.
7286 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7287int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7288{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7289 struct http_txn *txn = &s->txn;
7290 struct hdr_exp *exp;
7291
7292 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7293 int ret;
7294
7295 /*
7296 * The interleaving of transformations and verdicts
7297 * makes it difficult to decide to continue or stop
7298 * the evaluation.
7299 */
7300
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7301 if (txn->flags & TX_SVDENY)
7302 break;
7303
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7304 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7305 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7306 exp->action == ACT_PASS)) {
7307 exp = exp->next;
7308 continue;
7309 }
7310
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7311 /* if this filter had a condition, evaluate it now and skip to
7312 * next filter if the condition does not match.
7313 */
7314 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7315 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]7316 ret = acl_pass(ret);
7317 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7318 ret = !ret;
7319 if (!ret)
7320 continue;
7321 }
7322
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7323 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7324 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7325 if (unlikely(ret < 0))
7326 return -1;
7327
7328 if (likely(ret == 0)) {
7329 /* The filter did not match the response, it can be
7330 * iterated through all headers.
7331 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7332 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7333 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7334 }
7335 return 0;
7336}
7337
7338
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7339/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7340 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7341 * desirable to call it only when needed. This function is also used when we
7342 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7343 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7344void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7345{
7346 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7347 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7348 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7349 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7350 char *hdr_beg, *hdr_end, *hdr_next;
7351 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7352
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7353 /* Iterate through the headers.
7354 * we start with the start line.
7355 */
7356 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7357 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7358
7359 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7360 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7361 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7362
7363 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7364 hdr_beg = hdr_next;
7365 hdr_end = hdr_beg + cur_hdr->len;
7366 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7367
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7368 /* We have one full header between hdr_beg and hdr_end, and the
7369 * next header starts at hdr_next. We're only interested in
7370 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7371 */
7372
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7373 is_cookie2 = 0;
7374 prev = hdr_beg + 10;
7375 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7376 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7377 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7378 if (!val) {
7379 old_idx = cur_idx;
7380 continue;
7381 }
7382 is_cookie2 = 1;
7383 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7384 }
7385
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7386 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7387 * <prev> points to the colon.
7388 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7389 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7390
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7391 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7392 * check-cache is enabled) and we are not interested in checking
7393 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7394 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7395 if (t->be->cookie_name == NULL &&
7396 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7397 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7398 return;
7399
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7400 /* OK so now we know we have to process this response cookie.
7401 * The format of the Set-Cookie header is slightly different
7402 * from the format of the Cookie header in that it does not
7403 * support the comma as a cookie delimiter (thus the header
7404 * cannot be folded) because the Expires attribute described in
7405 * the original Netscape's spec may contain an unquoted date
7406 * with a comma inside. We have to live with this because
7407 * many browsers don't support Max-Age and some browsers don't
7408 * support quoted strings. However the Set-Cookie2 header is
7409 * clean.
7410 *
7411 * We have to keep multiple pointers in order to support cookie
7412 * removal at the beginning, middle or end of header without
7413 * corrupting the header (in case of set-cookie2). A special
7414 * pointer, <scav> points to the beginning of the set-cookie-av
7415 * fields after the first semi-colon. The <next> pointer points
7416 * either to the end of line (set-cookie) or next unquoted comma
7417 * (set-cookie2). All of these headers are valid :
7418 *
7419 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7420 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7421 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7422 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7423 * | | | | | | | | | |
7424 * | | | | | | | | +-> next hdr_end <--+
7425 * | | | | | | | +------------> scav
7426 * | | | | | | +--------------> val_end
7427 * | | | | | +--------------------> val_beg
7428 * | | | | +----------------------> equal
7429 * | | | +------------------------> att_end
7430 * | | +----------------------------> att_beg
7431 * | +------------------------------> prev
7432 * +-----------------------------------------> hdr_beg
7433 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7434
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7435 for (; prev < hdr_end; prev = next) {
7436 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7437
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7438 /* find att_beg */
7439 att_beg = prev + 1;
7440 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7441 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7442
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7443 /* find att_end : this is the first character after the last non
7444 * space before the equal. It may be equal to hdr_end.
7445 */
7446 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7447
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7448 while (equal < hdr_end) {
7449 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7450 break;
7451 if (http_is_spht[(unsigned char)*equal++])
7452 continue;
7453 att_end = equal;
7454 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7455
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7456 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7457 * is between <att_beg> and <equal>, both may be identical.
7458 */
7459
7460 /* look for end of cookie if there is an equal sign */
7461 if (equal < hdr_end && *equal == '=') {
7462 /* look for the beginning of the value */
7463 val_beg = equal + 1;
7464 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7465 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7466
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7467 /* find the end of the value, respecting quotes */
7468 next = find_cookie_value_end(val_beg, hdr_end);
7469
7470 /* make val_end point to the first white space or delimitor after the value */
7471 val_end = next;
7472 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7473 val_end--;
7474 } else {
7475 /* <equal> points to next comma, semi-colon or EOL */
7476 val_beg = val_end = next = equal;
7477 }
7478
7479 if (next < hdr_end) {
7480 /* Set-Cookie2 supports multiple cookies, and <next> points to
7481 * a colon or semi-colon before the end. So skip all attr-value
7482 * pairs and look for the next comma. For Set-Cookie, since
7483 * commas are permitted in values, skip to the end.
7484 */
7485 if (is_cookie2)
7486 next = find_hdr_value_end(next, hdr_end);
7487 else
7488 next = hdr_end;
7489 }
7490
7491 /* Now everything is as on the diagram above */
7492
7493 /* Ignore cookies with no equal sign */
7494 if (equal == val_end)
7495 continue;
7496
7497 /* If there are spaces around the equal sign, we need to
7498 * strip them otherwise we'll get trouble for cookie captures,
7499 * or even for rewrites. Since this happens extremely rarely,
7500 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7501 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7502 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7503 int stripped_before = 0;
7504 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7505
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7506 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7507 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7508 equal += stripped_before;
7509 val_beg += stripped_before;
7510 }
7511
7512 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7513 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7514 val_beg += stripped_after;
7515 stripped_before += stripped_after;
7516 }
7517
7518 val_end += stripped_before;
7519 next += stripped_before;
7520 hdr_end += stripped_before;
7521 hdr_next += stripped_before;
7522 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7523 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7524 }
7525
7526 /* First, let's see if we want to capture this cookie. We check
7527 * that we don't already have a server side cookie, because we
7528 * can only capture one. Also as an optimisation, we ignore
7529 * cookies shorter than the declared name.
7530 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7531 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7532 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7533 (val_end - att_beg >= t->fe->capture_namelen) &&
7534 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7535 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7536 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7537 Alert("HTTP logging : out of memory.\n");
7538 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7539 else {
7540 if (log_len > t->fe->capture_len)
7541 log_len = t->fe->capture_len;
7542 memcpy(txn->srv_cookie, att_beg, log_len);
7543 txn->srv_cookie[log_len] = 0;
7544 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7545 }
7546
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7547 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7548 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7549 if (!(t->flags & SN_IGNORE_PRST) &&
7550 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7551 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7552 /* assume passive cookie by default */
7553 txn->flags &= ~TX_SCK_MASK;
7554 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7555
7556 /* If the cookie is in insert mode on a known server, we'll delete
7557 * this occurrence because we'll insert another one later.
7558 * 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]7559 * a direct access.
7560 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7561 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7562 /* The "preserve" flag was set, we don't want to touch the
7563 * server's cookie.
7564 */
7565 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7566 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7567 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7568 /* this cookie must be deleted */
7569 if (*prev == ':' && next == hdr_end) {
7570 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7571 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7572 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7573 txn->hdr_idx.used--;
7574 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7575 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7576 hdr_next += delta;
7577 http_msg_move_end(&txn->rsp, delta);
7578 /* note: while both invalid now, <next> and <hdr_end>
7579 * are still equal, so the for() will stop as expected.
7580 */
7581 } else {
7582 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7583 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7584 next = prev;
7585 hdr_end += delta;
7586 hdr_next += delta;
7587 cur_hdr->len += delta;
7588 http_msg_move_end(&txn->rsp, delta);
7589 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7590 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7591 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7592 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7593 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7594 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7595 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7596 * with this server since we know it.
7597 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7598 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7599 next += delta;
7600 hdr_end += delta;
7601 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7602 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7603 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7604
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7605 txn->flags &= ~TX_SCK_MASK;
7606 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7607 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7608 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7609 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7610 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7611 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7612 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7613 next += delta;
7614 hdr_end += delta;
7615 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7616 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7617 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7618
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7619 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7620 txn->flags &= ~TX_SCK_MASK;
7621 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7622 }
7623 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7624 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7625 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7626 int cmp_len, value_len;
7627 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7628
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7629 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7630 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7631 value_begin = att_beg + t->be->appsession_name_len;
7632 value_len = MIN(t->be->appsession_len, val_end - att_beg - t->be->appsession_name_len);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7633 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7634 cmp_len = att_end - att_beg;
7635 value_begin = val_beg;
7636 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7637 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7638
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7639 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7640 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7641 /* free a possibly previously allocated memory */
7642 pool_free2(apools.sessid, txn->sessid);
7643
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7644 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7645 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7646 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7647 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7648 return;
7649 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7650 memcpy(txn->sessid, value_begin, value_len);
7651 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7652 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7653 }
7654 /* that's done for this cookie, check the next one on the same
7655 * line when next != hdr_end (only if is_cookie2).
7656 */
7657 }
7658 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7659 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7660 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7661
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7662 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7663 appsess *asession = NULL;
7664 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7665 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7666 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7667 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7668 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7669 Alert("Not enough Memory process_srv():asession:calloc().\n");
7670 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7671 return;
7672 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7673 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7674
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7675 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7676 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7677 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
Cyril Bonté41689c22010-01-10 00:30:14 +0100[diff] [blame]7678 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7679 return;
7680 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7681 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7682 asession->sessid[t->be->appsession_len] = 0;
7683
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7684 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7685 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7686 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7687 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
Cyril Bonté41689c22010-01-10 00:30:14 +0100[diff] [blame]7688 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7689 return;
7690 }
7691 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7692 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7693
7694 asession->request_count = 0;
7695 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7696 }
7697
7698 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7699 asession->request_count++;
7700 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7701}
7702
7703
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7704/*
7705 * Check if response is cacheable or not. Updates t->flags.
7706 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7707void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7708{
7709 struct http_txn *txn = &t->txn;
7710 char *p1, *p2;
7711
7712 char *cur_ptr, *cur_end, *cur_next;
7713 int cur_idx;
7714
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7715 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7716 return;
7717
7718 /* Iterate through the headers.
7719 * we start with the start line.
7720 */
7721 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7722 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7723
7724 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7725 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7726 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7727
7728 cur_hdr = &txn->hdr_idx.v[cur_idx];
7729 cur_ptr = cur_next;
7730 cur_end = cur_ptr + cur_hdr->len;
7731 cur_next = cur_end + cur_hdr->cr + 1;
7732
7733 /* We have one full header between cur_ptr and cur_end, and the
7734 * next header starts at cur_next. We're only interested in
7735 * "Cookie:" headers.
7736 */
7737
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7738 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7739 if (val) {
7740 if ((cur_end - (cur_ptr + val) >= 8) &&
7741 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7742 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7743 return;
7744 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7745 }
7746
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7747 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7748 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7749 continue;
7750
7751 /* OK, right now we know we have a cache-control header at cur_ptr */
7752
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7753 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7754
7755 if (p1 >= cur_end) /* no more info */
7756 continue;
7757
7758 /* p1 is at the beginning of the value */
7759 p2 = p1;
7760
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7761 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7762 p2++;
7763
7764 /* we have a complete value between p1 and p2 */
7765 if (p2 < cur_end && *p2 == '=') {
7766 /* we have something of the form no-cache="set-cookie" */
7767 if ((cur_end - p1 >= 21) &&
7768 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7769 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7770 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7771 continue;
7772 }
7773
7774 /* OK, so we know that either p2 points to the end of string or to a comma */
7775 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]7776 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7777 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7778 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7779 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7780 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7781 return;
7782 }
7783
7784 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7785 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7786 continue;
7787 }
7788 }
7789}
7790
7791
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7792/*
7793 * Try to retrieve a known appsession in the URI, then the associated server.
7794 * If the server is found, it's assigned to the session.
7795 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7796void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7797{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7798 char *end_params, *first_param, *cur_param, *next_param;
7799 char separator;
7800 int value_len;
7801
7802 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7803
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7804 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7805 (t->txn.meth != HTTP_METH_GET && t->txn.meth != HTTP_METH_POST && t->txn.meth != HTTP_METH_HEAD)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7806 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7807 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7808
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7809 first_param = NULL;
7810 switch (mode) {
7811 case PR_O2_AS_M_PP:
7812 first_param = memchr(begin, ';', len);
7813 break;
7814 case PR_O2_AS_M_QS:
7815 first_param = memchr(begin, '?', len);
7816 break;
7817 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7818
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7819 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7820 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7821 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7822
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7823 switch (mode) {
7824 case PR_O2_AS_M_PP:
7825 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7826 end_params = (char *) begin + len;
7827 }
7828 separator = ';';
7829 break;
7830 case PR_O2_AS_M_QS:
7831 end_params = (char *) begin + len;
7832 separator = '&';
7833 break;
7834 default:
7835 /* unknown mode, shouldn't happen */
7836 return;
7837 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7838
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7839 cur_param = next_param = end_params;
7840 while (cur_param > first_param) {
7841 cur_param--;
7842 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7843 /* let's see if this is the appsession parameter */
7844 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7845 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7846 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7847 /* Cool... it's the right one */
7848 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7849 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7850 if (value_len > 0) {
7851 manage_client_side_appsession(t, cur_param, value_len);
7852 }
7853 break;
7854 }
7855 next_param = cur_param;
7856 }
7857 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7858#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7859 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7860 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7861#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7862}
7863
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7864/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7865 * 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]7866 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7867 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7868 * 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]7869 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7870 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7871 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7872 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7873int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7874{
7875 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7876 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7877 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7878
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7879 if (!uri_auth)
7880 return 0;
7881
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7882 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]7883 return 0;
7884
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7885 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7886 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7887 return 0;
7888
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]7889 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7890 return 0;
7891
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7892 return 1;
7893}
7894
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7895/*
7896 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7897 * By default it tries to report the error position as msg->err_pos. However if
7898 * this one is not set, it will then report msg->next, which is the last known
7899 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7900 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7901 */
7902void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7903 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]7904 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7905{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7906 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7907 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7908
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7909 es->len = MIN(chn->buf->i, sizeof(es->buf));
7910 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7911 len1 = MIN(len1, es->len);
7912 len2 = es->len - len1; /* remaining data if buffer wraps */
7913
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7914 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7915 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7916 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7917
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7918 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7919 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7920 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7921 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7922
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7923 es->when = date; // user-visible date
7924 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7925 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7926 es->oe = other_end;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]7927 if (objt_conn(s->req->prod->end))
7928 es->src = __objt_conn(s->req->prod->end)->addr.from;
7929 else
7930 memset(&es->src, 0, sizeof(es->src));
7931
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7932 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7933 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7934 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7935 es->s_flags = s->flags;
7936 es->t_flags = s->txn.flags;
7937 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7938 es->b_out = chn->buf->o;
7939 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7940 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7941 es->m_clen = msg->chunk_len;
7942 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7943}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7944
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7945/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7946 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7947 * performed over the whole headers. Otherwise it must contain a valid header
7948 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7949 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7950 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7951 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7952 * -1. The value fetch stops at commas, so this function is suited for use with
7953 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7954 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7955 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7956unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7957 struct hdr_idx *idx, int occ,
7958 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7959{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7960 struct hdr_ctx local_ctx;
7961 char *ptr_hist[MAX_HDR_HISTORY];
7962 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7963 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7964 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7965
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7966 if (!ctx) {
7967 local_ctx.idx = 0;
7968 ctx = &local_ctx;
7969 }
7970
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7971 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7972 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7973 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7974 occ--;
7975 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7976 *vptr = ctx->line + ctx->val;
7977 *vlen = ctx->vlen;
7978 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7979 }
7980 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7981 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7982 }
7983
7984 /* negative occurrence, we scan all the list then walk back */
7985 if (-occ > MAX_HDR_HISTORY)
7986 return 0;
7987
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7988 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7989 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7990 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7991 len_hist[hist_ptr] = ctx->vlen;
7992 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7993 hist_ptr = 0;
7994 found++;
7995 }
7996 if (-occ > found)
7997 return 0;
7998 /* 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]7999 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8000 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8001 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8002 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8003 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8004 if (hist_ptr >= MAX_HDR_HISTORY)
8005 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8006 *vptr = ptr_hist[hist_ptr];
8007 *vlen = len_hist[hist_ptr];
8008 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8009}
8010
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8011/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8012 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8013 * performed over the whole headers. Otherwise it must contain a valid header
8014 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8015 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8016 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8017 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8018 * -1. This function differs from http_get_hdr() in that it only returns full
8019 * line header values and does not stop at commas.
8020 * The return value is 0 if nothing was found, or non-zero otherwise.
8021 */
8022unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8023 struct hdr_idx *idx, int occ,
8024 struct hdr_ctx *ctx, char **vptr, int *vlen)
8025{
8026 struct hdr_ctx local_ctx;
8027 char *ptr_hist[MAX_HDR_HISTORY];
8028 int len_hist[MAX_HDR_HISTORY];
8029 unsigned int hist_ptr;
8030 int found;
8031
8032 if (!ctx) {
8033 local_ctx.idx = 0;
8034 ctx = &local_ctx;
8035 }
8036
8037 if (occ >= 0) {
8038 /* search from the beginning */
8039 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8040 occ--;
8041 if (occ <= 0) {
8042 *vptr = ctx->line + ctx->val;
8043 *vlen = ctx->vlen;
8044 return 1;
8045 }
8046 }
8047 return 0;
8048 }
8049
8050 /* negative occurrence, we scan all the list then walk back */
8051 if (-occ > MAX_HDR_HISTORY)
8052 return 0;
8053
8054 found = hist_ptr = 0;
8055 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8056 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8057 len_hist[hist_ptr] = ctx->vlen;
8058 if (++hist_ptr >= MAX_HDR_HISTORY)
8059 hist_ptr = 0;
8060 found++;
8061 }
8062 if (-occ > found)
8063 return 0;
8064 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8065 * find occurrence -occ, so we have to check [hist_ptr+occ].
8066 */
8067 hist_ptr += occ;
8068 if (hist_ptr >= MAX_HDR_HISTORY)
8069 hist_ptr -= MAX_HDR_HISTORY;
8070 *vptr = ptr_hist[hist_ptr];
8071 *vlen = len_hist[hist_ptr];
8072 return 1;
8073}
8074
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8075/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8076 * Print a debug line with a header. Always stop at the first CR or LF char,
8077 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8078 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8079 */
8080void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
8081{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8082 int max;
8083 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8084 dir,
8085 objt_conn(t->req->prod->end) ? (unsigned short)objt_conn(t->req->prod->end)->t.sock.fd : -1,
8086 objt_conn(t->req->cons->end) ? (unsigned short)objt_conn(t->req->cons->end)->t.sock.fd : -1);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8087
8088 for (max = 0; start + max < end; max++)
8089 if (start[max] == '\r' || start[max] == '\n')
8090 break;
8091
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8092 UBOUND(max, trash.size - trash.len - 3);
8093 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8094 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8095 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8096}
8097
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8098/*
8099 * Initialize a new HTTP transaction for session <s>. It is assumed that all
8100 * the required fields are properly allocated and that we only need to (re)init
8101 * them. This should be used before processing any new request.
8102 */
8103void http_init_txn(struct session *s)
8104{
8105 struct http_txn *txn = &s->txn;
8106 struct proxy *fe = s->fe;
8107
8108 txn->flags = 0;
8109 txn->status = -1;
8110
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8111 txn->cookie_first_date = 0;
8112 txn->cookie_last_date = 0;
8113
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8114 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8115 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8116 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8117 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8118 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8119 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8120 txn->req.chunk_len = 0LL;
8121 txn->req.body_len = 0LL;
8122 txn->rsp.chunk_len = 0LL;
8123 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8124 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8125 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8126 txn->req.chn = s->req;
8127 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8128
8129 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8130
8131 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8132 if (fe->options2 & PR_O2_REQBUG_OK)
8133 txn->req.err_pos = -1; /* let buggy requests pass */
8134
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8135 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8136 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8137
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8138 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8139 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8140
8141 if (txn->hdr_idx.v)
8142 hdr_idx_init(&txn->hdr_idx);
8143}
8144
8145/* to be used at the end of a transaction */
8146void http_end_txn(struct session *s)
8147{
8148 struct http_txn *txn = &s->txn;
8149
8150 /* these ones will have been dynamically allocated */
8151 pool_free2(pool2_requri, txn->uri);
8152 pool_free2(pool2_capture, txn->cli_cookie);
8153 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8154 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8155 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8156
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8157 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8158 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8159 txn->uri = NULL;
8160 txn->srv_cookie = NULL;
8161 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8162
8163 if (txn->req.cap) {
8164 struct cap_hdr *h;
8165 for (h = s->fe->req_cap; h; h = h->next)
8166 pool_free2(h->pool, txn->req.cap[h->index]);
8167 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8168 }
8169
8170 if (txn->rsp.cap) {
8171 struct cap_hdr *h;
8172 for (h = s->fe->rsp_cap; h; h = h->next)
8173 pool_free2(h->pool, txn->rsp.cap[h->index]);
8174 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8175 }
8176
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8177}
8178
8179/* to be used at the end of a transaction to prepare a new one */
8180void http_reset_txn(struct session *s)
8181{
8182 http_end_txn(s);
8183 http_init_txn(s);
8184
8185 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8186 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8187 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8188 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8189 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8190 /* re-init store persistence */
8191 s->store_count = 0;
8192
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8193 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8194
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8195 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8196
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8197 /* We must trim any excess data from the response buffer, because we
8198 * may have blocked an invalid response from a server that we don't
8199 * want to accidentely forward once we disable the analysers, nor do
8200 * we want those data to come along with next response. A typical
8201 * example of such data would be from a buggy server responding to
8202 * a HEAD with some data, or sending more than the advertised
8203 * content-length.
8204 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8205 if (unlikely(s->rep->buf->i))
8206 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8207
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8208 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8209 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8210
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8211 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8212 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8213
8214 s->req->rex = TICK_ETERNITY;
8215 s->req->wex = TICK_ETERNITY;
8216 s->req->analyse_exp = TICK_ETERNITY;
8217 s->rep->rex = TICK_ETERNITY;
8218 s->rep->wex = TICK_ETERNITY;
8219 s->rep->analyse_exp = TICK_ETERNITY;
8220}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8221
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8222void free_http_req_rules(struct list *r) {
8223 struct http_req_rule *tr, *pr;
8224
8225 list_for_each_entry_safe(pr, tr, r, list) {
8226 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8227 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8228 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8229
8230 free(pr);
8231 }
8232}
8233
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8234/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8235struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8236{
8237 struct http_req_rule *rule;
8238 int cur_arg;
8239
8240 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8241 if (!rule) {
8242 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8243 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8244 }
8245
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8246 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8247 rule->action = HTTP_REQ_ACT_ALLOW;
8248 cur_arg = 1;
8249 } else if (!strcmp(args[0], "deny")) {
8250 rule->action = HTTP_REQ_ACT_DENY;
8251 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8252 } else if (!strcmp(args[0], "tarpit")) {
8253 rule->action = HTTP_REQ_ACT_TARPIT;
8254 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8255 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8256 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8257 cur_arg = 1;
8258
8259 while(*args[cur_arg]) {
8260 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8261 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8262 cur_arg+=2;
8263 continue;
8264 } else
8265 break;
8266 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8267 } else if (!strcmp(args[0], "set-nice")) {
8268 rule->action = HTTP_REQ_ACT_SET_NICE;
8269 cur_arg = 1;
8270
8271 if (!*args[cur_arg] ||
8272 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8273 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8274 file, linenum, args[0]);
8275 goto out_err;
8276 }
8277 rule->arg.nice = atoi(args[cur_arg]);
8278 if (rule->arg.nice < -1024)
8279 rule->arg.nice = -1024;
8280 else if (rule->arg.nice > 1024)
8281 rule->arg.nice = 1024;
8282 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8283 } else if (!strcmp(args[0], "set-tos")) {
8284#ifdef IP_TOS
8285 char *err;
8286 rule->action = HTTP_REQ_ACT_SET_TOS;
8287 cur_arg = 1;
8288
8289 if (!*args[cur_arg] ||
8290 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8291 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8292 file, linenum, args[0]);
8293 goto out_err;
8294 }
8295
8296 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8297 if (err && *err != '\0') {
8298 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8299 file, linenum, err, args[0]);
8300 goto out_err;
8301 }
8302 cur_arg++;
8303#else
8304 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8305 goto out_err;
8306#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8307 } else if (!strcmp(args[0], "set-mark")) {
8308#ifdef SO_MARK
8309 char *err;
8310 rule->action = HTTP_REQ_ACT_SET_MARK;
8311 cur_arg = 1;
8312
8313 if (!*args[cur_arg] ||
8314 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8315 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8316 file, linenum, args[0]);
8317 goto out_err;
8318 }
8319
8320 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8321 if (err && *err != '\0') {
8322 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8323 file, linenum, err, args[0]);
8324 goto out_err;
8325 }
8326 cur_arg++;
8327 global.last_checks |= LSTCHK_NETADM;
8328#else
8329 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8330 goto out_err;
8331#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8332 } else if (!strcmp(args[0], "set-log-level")) {
8333 rule->action = HTTP_REQ_ACT_SET_LOGL;
8334 cur_arg = 1;
8335
8336 if (!*args[cur_arg] ||
8337 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8338 bad_log_level:
8339 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8340 file, linenum, args[0]);
8341 goto out_err;
8342 }
8343 if (strcmp(args[cur_arg], "silent") == 0)
8344 rule->arg.loglevel = -1;
8345 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8346 goto bad_log_level;
8347 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8348 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8349 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8350 cur_arg = 1;
8351
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8352 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8353 (*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]8354 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8355 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8356 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8357 }
8358
8359 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8360 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8361 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8362
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8363 proxy->conf.args.ctx = ARGC_HRQ;
Willy Tarreau434c57c2013-01-08 01:10:24 +0100[diff] [blame]8364 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8365 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8366 cur_arg += 2;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8367 } else if (strcmp(args[0], "redirect") == 0) {
8368 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]8369 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8370
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8371 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]8372 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8373 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8374 goto out_err;
8375 }
8376
8377 /* this redirect rule might already contain a parsed condition which
8378 * we'll pass to the http-request rule.
8379 */
8380 rule->action = HTTP_REQ_ACT_REDIR;
8381 rule->arg.redir = redir;
8382 rule->cond = redir->cond;
8383 redir->cond = NULL;
8384 cur_arg = 2;
8385 return rule;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8386 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8387 Alert("parsing [%s:%d]: 'http-request' expects 'allow', 'deny', 'auth', 'redirect', 'tarpit', 'add-header', 'set-header', 'set-nice', 'set-tos', 'set-mark', 'set-log-level', but got '%s'%s.\n",
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8388 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8389 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8390 }
8391
8392 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8393 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8394 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8395
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8396 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8397 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
8398 file, linenum, args[0], errmsg);
8399 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8400 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8401 }
8402 rule->cond = cond;
8403 }
8404 else if (*args[cur_arg]) {
8405 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
8406 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8407 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8408 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8409 }
8410
8411 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8412 out_err:
8413 free(rule);
8414 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8415}
8416
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8417/* parse an "http-respose" rule */
8418struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8419{
8420 struct http_res_rule *rule;
8421 int cur_arg;
8422
8423 rule = calloc(1, sizeof(*rule));
8424 if (!rule) {
8425 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
8426 goto out_err;
8427 }
8428
8429 if (!strcmp(args[0], "allow")) {
8430 rule->action = HTTP_RES_ACT_ALLOW;
8431 cur_arg = 1;
8432 } else if (!strcmp(args[0], "deny")) {
8433 rule->action = HTTP_RES_ACT_DENY;
8434 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8435 } else if (!strcmp(args[0], "set-nice")) {
8436 rule->action = HTTP_RES_ACT_SET_NICE;
8437 cur_arg = 1;
8438
8439 if (!*args[cur_arg] ||
8440 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8441 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
8442 file, linenum, args[0]);
8443 goto out_err;
8444 }
8445 rule->arg.nice = atoi(args[cur_arg]);
8446 if (rule->arg.nice < -1024)
8447 rule->arg.nice = -1024;
8448 else if (rule->arg.nice > 1024)
8449 rule->arg.nice = 1024;
8450 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8451 } else if (!strcmp(args[0], "set-tos")) {
8452#ifdef IP_TOS
8453 char *err;
8454 rule->action = HTTP_RES_ACT_SET_TOS;
8455 cur_arg = 1;
8456
8457 if (!*args[cur_arg] ||
8458 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8459 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8460 file, linenum, args[0]);
8461 goto out_err;
8462 }
8463
8464 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8465 if (err && *err != '\0') {
8466 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8467 file, linenum, err, args[0]);
8468 goto out_err;
8469 }
8470 cur_arg++;
8471#else
8472 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8473 goto out_err;
8474#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8475 } else if (!strcmp(args[0], "set-mark")) {
8476#ifdef SO_MARK
8477 char *err;
8478 rule->action = HTTP_RES_ACT_SET_MARK;
8479 cur_arg = 1;
8480
8481 if (!*args[cur_arg] ||
8482 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8483 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8484 file, linenum, args[0]);
8485 goto out_err;
8486 }
8487
8488 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8489 if (err && *err != '\0') {
8490 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8491 file, linenum, err, args[0]);
8492 goto out_err;
8493 }
8494 cur_arg++;
8495 global.last_checks |= LSTCHK_NETADM;
8496#else
8497 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8498 goto out_err;
8499#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8500 } else if (!strcmp(args[0], "set-log-level")) {
8501 rule->action = HTTP_RES_ACT_SET_LOGL;
8502 cur_arg = 1;
8503
8504 if (!*args[cur_arg] ||
8505 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8506 bad_log_level:
8507 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
8508 file, linenum, args[0]);
8509 goto out_err;
8510 }
8511 if (strcmp(args[cur_arg], "silent") == 0)
8512 rule->arg.loglevel = -1;
8513 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
8514 goto bad_log_level;
8515 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8516 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8517 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
8518 cur_arg = 1;
8519
8520 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8521 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
8522 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
8523 file, linenum, args[0]);
8524 goto out_err;
8525 }
8526
8527 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8528 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8529 LIST_INIT(&rule->arg.hdr_add.fmt);
8530
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8531 proxy->conf.args.ctx = ARGC_HRS;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8532 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8533 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR);
8534 cur_arg += 2;
8535 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8536 Alert("parsing [%s:%d]: 'http-response' expects 'allow', 'deny', 'redirect', 'add-header', 'set-header', 'set-nice', 'set-tos', 'set-mark', 'set-log-level', but got '%s'%s.\n",
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8537 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
8538 goto out_err;
8539 }
8540
8541 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8542 struct acl_cond *cond;
8543 char *errmsg = NULL;
8544
8545 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8546 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
8547 file, linenum, args[0], errmsg);
8548 free(errmsg);
8549 goto out_err;
8550 }
8551 rule->cond = cond;
8552 }
8553 else if (*args[cur_arg]) {
8554 Alert("parsing [%s:%d]: 'http-response %s' expects"
8555 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8556 file, linenum, args[0], args[cur_arg]);
8557 goto out_err;
8558 }
8559
8560 return rule;
8561 out_err:
8562 free(rule);
8563 return NULL;
8564}
8565
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8566/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8567 * with <err> filled with the error message. If <use_fmt> is not null, builds a
8568 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8569 */
8570struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8571 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8572{
8573 struct redirect_rule *rule;
8574 int cur_arg;
8575 int type = REDIRECT_TYPE_NONE;
8576 int code = 302;
8577 const char *destination = NULL;
8578 const char *cookie = NULL;
8579 int cookie_set = 0;
8580 unsigned int flags = REDIRECT_FLAG_NONE;
8581 struct acl_cond *cond = NULL;
8582
8583 cur_arg = 0;
8584 while (*(args[cur_arg])) {
8585 if (strcmp(args[cur_arg], "location") == 0) {
8586 if (!*args[cur_arg + 1])
8587 goto missing_arg;
8588
8589 type = REDIRECT_TYPE_LOCATION;
8590 cur_arg++;
8591 destination = args[cur_arg];
8592 }
8593 else if (strcmp(args[cur_arg], "prefix") == 0) {
8594 if (!*args[cur_arg + 1])
8595 goto missing_arg;
8596
8597 type = REDIRECT_TYPE_PREFIX;
8598 cur_arg++;
8599 destination = args[cur_arg];
8600 }
8601 else if (strcmp(args[cur_arg], "scheme") == 0) {
8602 if (!*args[cur_arg + 1])
8603 goto missing_arg;
8604
8605 type = REDIRECT_TYPE_SCHEME;
8606 cur_arg++;
8607 destination = args[cur_arg];
8608 }
8609 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
8610 if (!*args[cur_arg + 1])
8611 goto missing_arg;
8612
8613 cur_arg++;
8614 cookie = args[cur_arg];
8615 cookie_set = 1;
8616 }
8617 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
8618 if (!*args[cur_arg + 1])
8619 goto missing_arg;
8620
8621 cur_arg++;
8622 cookie = args[cur_arg];
8623 cookie_set = 0;
8624 }
8625 else if (strcmp(args[cur_arg], "code") == 0) {
8626 if (!*args[cur_arg + 1])
8627 goto missing_arg;
8628
8629 cur_arg++;
8630 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8631 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8632 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8633 "'%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]8634 args[cur_arg - 1], args[cur_arg]);
8635 return NULL;
8636 }
8637 }
8638 else if (!strcmp(args[cur_arg],"drop-query")) {
8639 flags |= REDIRECT_FLAG_DROP_QS;
8640 }
8641 else if (!strcmp(args[cur_arg],"append-slash")) {
8642 flags |= REDIRECT_FLAG_APPEND_SLASH;
8643 }
8644 else if (strcmp(args[cur_arg], "if") == 0 ||
8645 strcmp(args[cur_arg], "unless") == 0) {
8646 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
8647 if (!cond) {
8648 memprintf(errmsg, "error in condition: %s", *errmsg);
8649 return NULL;
8650 }
8651 break;
8652 }
8653 else {
8654 memprintf(errmsg,
8655 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
8656 args[cur_arg]);
8657 return NULL;
8658 }
8659 cur_arg++;
8660 }
8661
8662 if (type == REDIRECT_TYPE_NONE) {
8663 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
8664 return NULL;
8665 }
8666
8667 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
8668 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]8669 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8670
8671 if (!use_fmt) {
8672 /* old-style static redirect rule */
8673 rule->rdr_str = strdup(destination);
8674 rule->rdr_len = strlen(destination);
8675 }
8676 else {
8677 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8678
8679 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
8680 * if prefix == "/", we don't want to add anything, otherwise it
8681 * makes it hard for the user to configure a self-redirection.
8682 */
8683 proxy->conf.args.ctx = ARGC_RDR;
8684 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
8685 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, 0,
8686 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR);
8687 }
8688 }
8689
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8690 if (cookie) {
8691 /* depending on cookie_set, either we want to set the cookie, or to clear it.
8692 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
8693 */
8694 rule->cookie_len = strlen(cookie);
8695 if (cookie_set) {
8696 rule->cookie_str = malloc(rule->cookie_len + 10);
8697 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8698 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
8699 rule->cookie_len += 9;
8700 } else {
8701 rule->cookie_str = malloc(rule->cookie_len + 21);
8702 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8703 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
8704 rule->cookie_len += 20;
8705 }
8706 }
8707 rule->type = type;
8708 rule->code = code;
8709 rule->flags = flags;
8710 LIST_INIT(&rule->list);
8711 return rule;
8712
8713 missing_arg:
8714 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
8715 return NULL;
8716}
8717
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8718/************************************************************************/
8719/* The code below is dedicated to ACL parsing and matching */
8720/************************************************************************/
8721
8722
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8723/* This function ensures that the prerequisites for an L7 fetch are ready,
8724 * which means that a request or response is ready. If some data is missing,
8725 * 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]8726 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
8727 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8728 *
8729 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8730 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
8731 * decide whether or not an HTTP message is present ;
8732 * 0 if the requested data cannot be fetched or if it is certain that
8733 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8734 * 1 if an HTTP message is ready
8735 */
8736static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8737smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8738 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8739{
8740 struct http_txn *txn = l7;
8741 struct http_msg *msg = &txn->req;
8742
8743 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8744 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8745 */
8746
8747 if (unlikely(!s || !txn))
8748 return 0;
8749
8750 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8751 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8752
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8753 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8754 if (unlikely(!s->req))
8755 return 0;
8756
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8757 /* If the buffer does not leave enough free space at the end,
8758 * we must first realign it.
8759 */
8760 if (s->req->buf->p > s->req->buf->data &&
8761 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
8762 buffer_slow_realign(s->req->buf);
8763
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8764 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]8765 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8766 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8767
8768 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8769 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8770 http_msg_analyzer(msg, &txn->hdr_idx);
8771
8772 /* Still no valid request ? */
8773 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8774 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8775 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8776 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8777 }
8778 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8779 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8780 return 0;
8781 }
8782
8783 /* OK we just got a valid HTTP request. We have some minor
8784 * preparation to perform so that further checks can rely
8785 * on HTTP tests.
8786 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8787
8788 /* If the request was parsed but was too large, we must absolutely
8789 * return an error so that it is not processed. At the moment this
8790 * cannot happen, but if the parsers are to change in the future,
8791 * we want this check to be maintained.
8792 */
8793 if (unlikely(s->req->buf->i + s->req->buf->p >
8794 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
8795 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8796 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8797 return 1;
8798 }
8799
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8800 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8801 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
8802 s->flags |= SN_REDIRECTABLE;
8803
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8804 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
8805 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8806 }
8807
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8808 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8809 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8810 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8811
8812 /* otherwise everything's ready for the request */
8813 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8814 else {
8815 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8816 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
8817 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8818 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8819 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8820 }
8821
8822 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8823 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8824 return 1;
8825}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8826
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8827#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8828 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]8829
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8830#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8831 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]8832
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8833
8834/* 1. Check on METHOD
8835 * We use the pre-parsed method if it is known, and store its number as an
8836 * integer. If it is unknown, we use the pointer and the length.
8837 */
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]8838static int pat_parse_meth(const char **text, struct pattern *pattern, enum pat_usage usage, int *opaque, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8839{
8840 int len, meth;
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]8841 struct chunk *trash;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8842
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8843 len = strlen(*text);
8844 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8845
8846 pattern->val.i = meth;
8847 if (meth == HTTP_METH_OTHER) {
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]8848 if (usage == PAT_U_COMPILE) {
8849 pattern->ptr.str = strdup(*text);
8850 if (!pattern->ptr.str) {
8851 memprintf(err, "out of memory while loading pattern");
8852 return 0;
8853 }
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8854 }
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]8855 else {
8856 trash = get_trash_chunk();
8857 if (trash->size < len) {
8858 memprintf(err, "no space avalaible in the buffer. expect %d, provides %d",
8859 len, trash->size);
8860 return 0;
8861 }
8862 pattern->ptr.str = trash->str;
8863 }
8864 pattern->expect_type = SMP_T_CSTR;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8865 pattern->len = len;
8866 }
Thierry FOURNIERcc0e0b32013-12-06 16:56:40 +0100[diff] [blame]8867 else
8868 pattern->expect_type = SMP_T_UINT;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8869 return 1;
8870}
8871
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8872/* This function fetches the method of current HTTP request and stores
8873 * it in the global pattern struct as a chunk. There are two possibilities :
8874 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8875 * in <len> and <ptr> is NULL ;
8876 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8877 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8878 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8879 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8880static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8881smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8882 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8883{
8884 int meth;
8885 struct http_txn *txn = l7;
8886
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8887 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8888
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8889 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8890 smp->type = SMP_T_UINT;
8891 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8892 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8893 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8894 /* ensure the indexes are not affected */
8895 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8896 smp->type = SMP_T_CSTR;
8897 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8898 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8899 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8900 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8901 return 1;
8902}
8903
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8904/* See above how the method is stored in the global pattern */
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]8905static enum pat_match_res pat_match_meth(struct sample *smp, struct pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8906{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8907 int icase;
8908
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8909
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8910 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8911 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8912 if (smp->data.uint == pattern->val.i)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8913 return PAT_MATCH;
8914 return PAT_NOMATCH;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8915 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8916
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8917 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8918 if (pattern->val.i != HTTP_METH_OTHER)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8919 return PAT_NOMATCH;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8920
8921 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8922 if (pattern->len != smp->data.str.len)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8923 return PAT_NOMATCH;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8924
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8925 icase = pattern->flags & PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8926 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8927 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8928 return PAT_NOMATCH;
8929 return PAT_MATCH;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8930}
8931
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8932static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8933smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8934 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8935{
8936 struct http_txn *txn = l7;
8937 char *ptr;
8938 int len;
8939
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8940 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8941
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8942 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8943 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8944
8945 while ((len-- > 0) && (*ptr++ != '/'));
8946 if (len <= 0)
8947 return 0;
8948
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8949 smp->type = SMP_T_CSTR;
8950 smp->data.str.str = ptr;
8951 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8952
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8953 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8954 return 1;
8955}
8956
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8957static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8958smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8959 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8960{
8961 struct http_txn *txn = l7;
8962 char *ptr;
8963 int len;
8964
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8965 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8966
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8967 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8968 return 0;
8969
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8970 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8971 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8972
8973 while ((len-- > 0) && (*ptr++ != '/'));
8974 if (len <= 0)
8975 return 0;
8976
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8977 smp->type = SMP_T_CSTR;
8978 smp->data.str.str = ptr;
8979 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8980
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8981 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8982 return 1;
8983}
8984
8985/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8986static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8987smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8988 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8989{
8990 struct http_txn *txn = l7;
8991 char *ptr;
8992 int len;
8993
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8994 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8995
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8996 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8997 return 0;
8998
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8999 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9000 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9001
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9002 smp->type = SMP_T_UINT;
9003 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9004 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9005 return 1;
9006}
9007
9008/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9009static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9010smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9011 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9012{
9013 struct http_txn *txn = l7;
9014
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9015 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9016
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9017 smp->type = SMP_T_CSTR;
9018 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9019 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9020 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9021 return 1;
9022}
9023
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9024static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9025smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9026 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9027{
9028 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9029 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9030
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9031 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9032
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9033 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr);
9034 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]9035 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9036
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9037 smp->type = SMP_T_IPV4;
9038 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9039 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9040 return 1;
9041}
9042
9043static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9044smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9045 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9046{
9047 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9048 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9049
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9050 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9051
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9052 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr);
9053 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
9054 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9055
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9056 smp->type = SMP_T_UINT;
9057 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]9058 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9059 return 1;
9060}
9061
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9062/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9063 * Accepts an optional argument of type string containing the header field name,
9064 * and an optional argument of type signed or unsigned integer to request an
9065 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9066 * headers are considered from the first one. It does not stop on commas and
9067 * returns full lines instead (useful for User-Agent or Date for example).
9068 */
9069static int
9070smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9071 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9072{
9073 struct http_txn *txn = l7;
9074 struct hdr_idx *idx = &txn->hdr_idx;
9075 struct hdr_ctx *ctx = smp->ctx.a[0];
9076 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9077 int occ = 0;
9078 const char *name_str = NULL;
9079 int name_len = 0;
9080
9081 if (!ctx) {
9082 /* first call */
9083 ctx = &static_hdr_ctx;
9084 ctx->idx = 0;
9085 smp->ctx.a[0] = ctx;
9086 }
9087
9088 if (args) {
9089 if (args[0].type != ARGT_STR)
9090 return 0;
9091 name_str = args[0].data.str.str;
9092 name_len = args[0].data.str.len;
9093
9094 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9095 occ = args[1].data.uint;
9096 }
9097
9098 CHECK_HTTP_MESSAGE_FIRST();
9099
9100 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
9101 /* search for header from the beginning */
9102 ctx->idx = 0;
9103
9104 if (!occ && !(opt & SMP_OPT_ITERATE))
9105 /* no explicit occurrence and single fetch => last header by default */
9106 occ = -1;
9107
9108 if (!occ)
9109 /* prepare to report multiple occurrences for ACL fetches */
9110 smp->flags |= SMP_F_NOT_LAST;
9111
9112 smp->type = SMP_T_CSTR;
9113 smp->flags |= SMP_F_VOL_HDR;
9114 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
9115 return 1;
9116
9117 smp->flags &= ~SMP_F_NOT_LAST;
9118 return 0;
9119}
9120
9121/* 6. Check on HTTP header count. The number of occurrences is returned.
9122 * Accepts exactly 1 argument of type string. It does not stop on commas and
9123 * returns full lines instead (useful for User-Agent or Date for example).
9124 */
9125static int
9126smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9127 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9128{
9129 struct http_txn *txn = l7;
9130 struct hdr_idx *idx = &txn->hdr_idx;
9131 struct hdr_ctx ctx;
9132 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9133 int cnt;
9134
9135 if (!args || args->type != ARGT_STR)
9136 return 0;
9137
9138 CHECK_HTTP_MESSAGE_FIRST();
9139
9140 ctx.idx = 0;
9141 cnt = 0;
9142 while (http_find_full_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
9143 cnt++;
9144
9145 smp->type = SMP_T_UINT;
9146 smp->data.uint = cnt;
9147 smp->flags = SMP_F_VOL_HDR;
9148 return 1;
9149}
9150
9151/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9152 * Accepts an optional argument of type string containing the header field name,
9153 * and an optional argument of type signed or unsigned integer to request an
9154 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9155 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9156 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9157static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9158smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9159 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9160{
9161 struct http_txn *txn = l7;
9162 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9163 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9164 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]9165 int occ = 0;
9166 const char *name_str = NULL;
9167 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9168
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9169 if (!ctx) {
9170 /* first call */
9171 ctx = &static_hdr_ctx;
9172 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]9173 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9174 }
9175
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9176 if (args) {
9177 if (args[0].type != ARGT_STR)
9178 return 0;
9179 name_str = args[0].data.str.str;
9180 name_len = args[0].data.str.len;
9181
9182 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9183 occ = args[1].data.uint;
9184 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9185
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9186 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9187
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9188 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9189 /* search for header from the beginning */
9190 ctx->idx = 0;
9191
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9192 if (!occ && !(opt & SMP_OPT_ITERATE))
9193 /* no explicit occurrence and single fetch => last header by default */
9194 occ = -1;
9195
9196 if (!occ)
9197 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9198 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]9199
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9200 smp->type = SMP_T_CSTR;
9201 smp->flags |= SMP_F_VOL_HDR;
9202 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]9203 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9204
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9205 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9206 return 0;
9207}
9208
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9209/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9210 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9211 */
9212static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9213smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9214 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9215{
9216 struct http_txn *txn = l7;
9217 struct hdr_idx *idx = &txn->hdr_idx;
9218 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9219 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]9220 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9221
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9222 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9223 return 0;
9224
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9225 CHECK_HTTP_MESSAGE_FIRST();
9226
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9227 ctx.idx = 0;
9228 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9229 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]9230 cnt++;
9231
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9232 smp->type = SMP_T_UINT;
9233 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9234 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9235 return 1;
9236}
9237
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9238/* Fetch an HTTP header's integer value. The integer value is returned. It
9239 * takes a mandatory argument of type string and an optional one of type int
9240 * to designate a specific occurrence. It returns an unsigned integer, which
9241 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9242 */
9243static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9244smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9245 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9246{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9247 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9248
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9249 if (ret > 0) {
9250 smp->type = SMP_T_UINT;
9251 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9252 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9253
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9254 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9255}
9256
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9257/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
9258 * and an optional one of type int to designate a specific occurrence.
9259 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9260 */
9261static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9262smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9263 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9264{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9265 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9266
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9267 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9268 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
9269 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9270 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9271 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9272 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9273 if (smp->data.str.len < temp->size - 1) {
9274 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
9275 temp->str[smp->data.str.len] = '\0';
9276 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
9277 smp->type = SMP_T_IPV6;
9278 break;
9279 }
9280 }
9281 }
9282
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9283 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9284 if (!(smp->flags & SMP_F_NOT_LAST))
9285 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9286 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9287 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9288}
9289
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9290/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
9291 * the first '/' after the possible hostname, and ends before the possible '?'.
9292 */
9293static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9294smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9295 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9296{
9297 struct http_txn *txn = l7;
9298 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9299
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9300 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9301
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9302 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]9303 ptr = http_get_path(txn);
9304 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9305 return 0;
9306
9307 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9308 smp->type = SMP_T_CSTR;
9309 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9310
9311 while (ptr < end && *ptr != '?')
9312 ptr++;
9313
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9314 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9315 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9316 return 1;
9317}
9318
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9319/* This produces a concatenation of the first occurrence of the Host header
9320 * followed by the path component if it begins with a slash ('/'). This means
9321 * that '*' will not be added, resulting in exactly the first Host entry.
9322 * If no Host header is found, then the path is returned as-is. The returned
9323 * 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]9324 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9325 */
9326static int
9327smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9328 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9329{
9330 struct http_txn *txn = l7;
9331 char *ptr, *end, *beg;
9332 struct hdr_ctx ctx;
9333
9334 CHECK_HTTP_MESSAGE_FIRST();
9335
9336 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9337 if (!http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx) ||
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9338 !ctx.vlen)
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9339 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9340
9341 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]9342 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9343 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]9344 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9345 smp->data.str.len = ctx.vlen;
9346
9347 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9348 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9349 beg = http_get_path(txn);
9350 if (!beg)
9351 beg = end;
9352
9353 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9354
9355 if (beg < ptr && *beg == '/') {
9356 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
9357 smp->data.str.len += ptr - beg;
9358 }
9359
9360 smp->flags = SMP_F_VOL_1ST;
9361 return 1;
9362}
9363
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9364/* This produces a 32-bit hash of the concatenation of the first occurrence of
9365 * the Host header followed by the path component if it begins with a slash ('/').
9366 * This means that '*' will not be added, resulting in exactly the first Host
9367 * 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]9368 * is hashed using the path hash followed by a full avalanche hash and provides a
9369 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9370 * high-traffic sites without having to store whole paths.
9371 */
9372static int
9373smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9374 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9375{
9376 struct http_txn *txn = l7;
9377 struct hdr_ctx ctx;
9378 unsigned int hash = 0;
9379 char *ptr, *beg, *end;
9380 int len;
9381
9382 CHECK_HTTP_MESSAGE_FIRST();
9383
9384 ctx.idx = 0;
9385 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
9386 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
9387 ptr = ctx.line + ctx.val;
9388 len = ctx.vlen;
9389 while (len--)
9390 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
9391 }
9392
9393 /* now retrieve the path */
9394 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
9395 beg = http_get_path(txn);
9396 if (!beg)
9397 beg = end;
9398
9399 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9400
9401 if (beg < ptr && *beg == '/') {
9402 while (beg < ptr)
9403 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
9404 }
9405 hash = full_hash(hash);
9406
9407 smp->type = SMP_T_UINT;
9408 smp->data.uint = hash;
9409 smp->flags = SMP_F_VOL_1ST;
9410 return 1;
9411}
9412
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9413/* 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]9414 * path as returned by smp_fetch_base32(). The idea is to have per-source and
9415 * per-path counters. The result is a binary block from 8 to 20 bytes depending
9416 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9417 * that in environments where IPv6 is insignificant, truncating the output to
9418 * 8 bytes would still work.
9419 */
9420static int
9421smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9422 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9423{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9424 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9425 struct connection *cli_conn = objt_conn(l4->si[0].end);
9426
9427 if (!cli_conn)
9428 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9429
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9430 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9431 return 0;
9432
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9433 temp = get_trash_chunk();
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9434 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
9435 temp->len += sizeof(smp->data.uint);
9436
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9437 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9438 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9439 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]9440 temp->len += 4;
9441 break;
9442 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9443 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]9444 temp->len += 16;
9445 break;
9446 default:
9447 return 0;
9448 }
9449
9450 smp->data.str = *temp;
9451 smp->type = SMP_T_BIN;
9452 return 1;
9453}
9454
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9455static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9456smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9457 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9458{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9459 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9460 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9461 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9462
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9463 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9464
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9465 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9466 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9467 return 1;
9468}
9469
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9470/* return a valid test if the current request is the first one on the connection */
9471static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9472smp_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]9473 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9474{
9475 if (!s)
9476 return 0;
9477
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9478 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9479 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9480 return 1;
9481}
9482
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9483/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9484static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9485smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9486 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9487{
9488
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9489 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9490 return 0;
9491
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9492 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9493
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9494 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9495 return 0;
9496
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9497 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9498 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9499 return 1;
9500}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9501
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9502/* Accepts exactly 1 argument of type userlist */
9503static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9504smp_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]9505 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9506{
9507
9508 if (!args || args->type != ARGT_USR)
9509 return 0;
9510
9511 CHECK_HTTP_MESSAGE_FIRST();
9512
9513 if (!get_http_auth(l4))
9514 return 0;
9515
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9516 /* pat_match_auth() will need several information at once */
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9517 smp->ctx.a[0] = args->data.usr; /* user list */
9518 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
9519 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
9520
9521 /* if the user does not belong to the userlist or has a wrong password,
9522 * report that it unconditionally does not match. Otherwise we return
9523 * a non-zero integer which will be ignored anyway since all the params
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9524 * that pat_match_auth() will use are in test->ctx.a[0,1,2].
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9525 */
9526 smp->type = SMP_T_BOOL;
9527 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
9528 if (smp->data.uint)
9529 smp->type = SMP_T_UINT;
9530
9531 return 1;
9532}
9533
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9534/* Try to find the next occurrence of a cookie name in a cookie header value.
9535 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
9536 * the cookie value is returned into *value and *value_l, and the function
9537 * returns a pointer to the next pointer to search from if the value was found.
9538 * Otherwise if the cookie was not found, NULL is returned and neither value
9539 * nor value_l are touched. The input <hdr> string should first point to the
9540 * header's value, and the <hdr_end> pointer must point to the first character
9541 * not part of the value. <list> must be non-zero if value may represent a list
9542 * of values (cookie headers). This makes it faster to abort parsing when no
9543 * list is expected.
9544 */
9545static char *
9546extract_cookie_value(char *hdr, const char *hdr_end,
9547 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]9548 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9549{
9550 char *equal, *att_end, *att_beg, *val_beg, *val_end;
9551 char *next;
9552
9553 /* we search at least a cookie name followed by an equal, and more
9554 * generally something like this :
9555 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
9556 */
9557 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
9558 /* Iterate through all cookies on this line */
9559
9560 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
9561 att_beg++;
9562
9563 /* find att_end : this is the first character after the last non
9564 * space before the equal. It may be equal to hdr_end.
9565 */
9566 equal = att_end = att_beg;
9567
9568 while (equal < hdr_end) {
9569 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
9570 break;
9571 if (http_is_spht[(unsigned char)*equal++])
9572 continue;
9573 att_end = equal;
9574 }
9575
9576 /* here, <equal> points to '=', a delimitor or the end. <att_end>
9577 * is between <att_beg> and <equal>, both may be identical.
9578 */
9579
9580 /* look for end of cookie if there is an equal sign */
9581 if (equal < hdr_end && *equal == '=') {
9582 /* look for the beginning of the value */
9583 val_beg = equal + 1;
9584 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
9585 val_beg++;
9586
9587 /* find the end of the value, respecting quotes */
9588 next = find_cookie_value_end(val_beg, hdr_end);
9589
9590 /* make val_end point to the first white space or delimitor after the value */
9591 val_end = next;
9592 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
9593 val_end--;
9594 } else {
9595 val_beg = val_end = next = equal;
9596 }
9597
9598 /* We have nothing to do with attributes beginning with '$'. However,
9599 * they will automatically be removed if a header before them is removed,
9600 * since they're supposed to be linked together.
9601 */
9602 if (*att_beg == '$')
9603 continue;
9604
9605 /* Ignore cookies with no equal sign */
9606 if (equal == next)
9607 continue;
9608
9609 /* Now we have the cookie name between att_beg and att_end, and
9610 * its value between val_beg and val_end.
9611 */
9612
9613 if (att_end - att_beg == cookie_name_l &&
9614 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
9615 /* let's return this value and indicate where to go on from */
9616 *value = val_beg;
9617 *value_l = val_end - val_beg;
9618 return next + 1;
9619 }
9620
9621 /* Set-Cookie headers only have the name in the first attr=value part */
9622 if (!list)
9623 break;
9624 }
9625
9626 return NULL;
9627}
9628
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9629/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9630 * 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]9631 * 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]9632 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9633 * 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]9634 * Accepts exactly 1 argument of type string. If the input options indicate
9635 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]9636 * The returned sample is of type CSTR.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9637 */
9638static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9639smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9640 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9641{
9642 struct http_txn *txn = l7;
9643 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9644 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9645 const struct http_msg *msg;
9646 const char *hdr_name;
9647 int hdr_name_len;
9648 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9649 int occ = 0;
9650 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9651
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9652 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9653 return 0;
9654
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9655 if (!ctx) {
9656 /* first call */
9657 ctx = &static_hdr_ctx;
9658 ctx->idx = 0;
9659 smp->ctx.a[2] = ctx;
9660 }
9661
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9662 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9663
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9664 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9665 msg = &txn->req;
9666 hdr_name = "Cookie";
9667 hdr_name_len = 6;
9668 } else {
9669 msg = &txn->rsp;
9670 hdr_name = "Set-Cookie";
9671 hdr_name_len = 10;
9672 }
9673
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9674 if (!occ && !(opt & SMP_OPT_ITERATE))
9675 /* no explicit occurrence and single fetch => last cookie by default */
9676 occ = -1;
9677
9678 /* OK so basically here, either we want only one value and it's the
9679 * last one, or we want to iterate over all of them and we fetch the
9680 * next one.
9681 */
9682
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9683 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9684 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9685 /* search for the header from the beginning, we must first initialize
9686 * the search parameters.
9687 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9688 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9689 ctx->idx = 0;
9690 }
9691
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9692 smp->flags |= SMP_F_VOL_HDR;
9693
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9694 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9695 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
9696 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9697 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
9698 goto out;
9699
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9700 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9701 continue;
9702
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9703 smp->ctx.a[0] = ctx->line + ctx->val;
9704 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9705 }
9706
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9707 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9708 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]9709 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9710 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9711 &smp->data.str.str,
9712 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9713 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9714 found = 1;
9715 if (occ >= 0) {
9716 /* one value was returned into smp->data.str.{str,len} */
9717 smp->flags |= SMP_F_NOT_LAST;
9718 return 1;
9719 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9720 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9721 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9722 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9723 /* all cookie headers and values were scanned. If we're looking for the
9724 * last occurrence, we may return it now.
9725 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9726 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9727 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9728 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9729}
9730
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9731/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9732 * 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]9733 * multiple cookies may be parsed on the same line. The returned sample is of
9734 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9735 */
9736static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9737smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9738 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9739{
9740 struct http_txn *txn = l7;
9741 struct hdr_idx *idx = &txn->hdr_idx;
9742 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9743 const struct http_msg *msg;
9744 const char *hdr_name;
9745 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9746 int cnt;
9747 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9748 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9749
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9750 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9751 return 0;
9752
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9753 CHECK_HTTP_MESSAGE_FIRST();
9754
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9755 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9756 msg = &txn->req;
9757 hdr_name = "Cookie";
9758 hdr_name_len = 6;
9759 } else {
9760 msg = &txn->rsp;
9761 hdr_name = "Set-Cookie";
9762 hdr_name_len = 10;
9763 }
9764
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9765 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]9766 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9767 ctx.idx = 0;
9768 cnt = 0;
9769
9770 while (1) {
9771 /* Note: val_beg == NULL every time we need to fetch a new header */
9772 if (!val_beg) {
9773 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
9774 break;
9775
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9776 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9777 continue;
9778
9779 val_beg = ctx.line + ctx.val;
9780 val_end = val_beg + ctx.vlen;
9781 }
9782
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9783 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9784 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9785 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9786 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9787 &smp->data.str.str,
9788 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9789 cnt++;
9790 }
9791 }
9792
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]9793 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9794 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9795 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9796 return 1;
9797}
9798
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9799/* Fetch an cookie's integer value. The integer value is returned. It
9800 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
9801 */
9802static int
9803smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9804 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9805{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9806 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9807
9808 if (ret > 0) {
9809 smp->type = SMP_T_UINT;
9810 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9811 }
9812
9813 return ret;
9814}
9815
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9816/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9817/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9818/************************************************************************/
9819
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9820/*
9821 * Given a path string and its length, find the position of beginning of the
9822 * query string. Returns NULL if no query string is found in the path.
9823 *
9824 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
9825 *
9826 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
9827 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9828static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9829{
9830 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]9831
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9832 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9833 return p ? p + 1 : NULL;
9834}
9835
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9836static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9837{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9838 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9839}
9840
9841/*
9842 * Given a url parameter, find the starting position of the first occurence,
9843 * or NULL if the parameter is not found.
9844 *
9845 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
9846 * the function will return query_string+8.
9847 */
9848static char*
9849find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9850 char* url_param_name, size_t url_param_name_l,
9851 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9852{
9853 char *pos, *last;
9854
9855 pos = query_string;
9856 last = query_string + query_string_l - url_param_name_l - 1;
9857
9858 while (pos <= last) {
9859 if (pos[url_param_name_l] == '=') {
9860 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
9861 return pos;
9862 pos += url_param_name_l + 1;
9863 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9864 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9865 pos++;
9866 pos++;
9867 }
9868 return NULL;
9869}
9870
9871/*
9872 * Given a url parameter name, returns its value and size into *value and
9873 * *value_l respectively, and returns non-zero. If the parameter is not found,
9874 * zero is returned and value/value_l are not touched.
9875 */
9876static int
9877find_url_param_value(char* path, size_t path_l,
9878 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9879 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9880{
9881 char *query_string, *qs_end;
9882 char *arg_start;
9883 char *value_start, *value_end;
9884
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9885 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9886 if (!query_string)
9887 return 0;
9888
9889 qs_end = path + path_l;
9890 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9891 url_param_name, url_param_name_l,
9892 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9893 if (!arg_start)
9894 return 0;
9895
9896 value_start = arg_start + url_param_name_l + 1;
9897 value_end = value_start;
9898
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9899 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9900 value_end++;
9901
9902 *value = value_start;
9903 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]9904 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9905}
9906
9907static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9908smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9909 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9910{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9911 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9912 struct http_txn *txn = l7;
9913 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9914
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9915 if (!args || args[0].type != ARGT_STR ||
9916 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9917 return 0;
9918
9919 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9920
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9921 if (args[1].type)
9922 delim = *args[1].data.str.str;
9923
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9924 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]9925 args->data.str.str, args->data.str.len,
9926 &smp->data.str.str, &smp->data.str.len,
9927 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9928 return 0;
9929
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]9930 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9931 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9932 return 1;
9933}
9934
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9935/* Return the signed integer value for the specified url parameter (see url_param
9936 * above).
9937 */
9938static int
9939smp_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]9940 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9941{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9942 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9943
9944 if (ret > 0) {
9945 smp->type = SMP_T_UINT;
9946 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9947 }
9948
9949 return ret;
9950}
9951
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9952/* This produces a 32-bit hash of the concatenation of the first occurrence of
9953 * the Host header followed by the path component if it begins with a slash ('/').
9954 * This means that '*' will not be added, resulting in exactly the first Host
9955 * entry. If no Host header is found, then the path is used. The resulting value
9956 * is hashed using the url hash followed by a full avalanche hash and provides a
9957 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
9958 * high-traffic sites without having to store whole paths.
9959 * this differs from the base32 functions in that it includes the url parameters
9960 * as well as the path
9961 */
9962static int
9963smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]9964 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9965{
9966 struct http_txn *txn = l7;
9967 struct hdr_ctx ctx;
9968 unsigned int hash = 0;
9969 char *ptr, *beg, *end;
9970 int len;
9971
9972 CHECK_HTTP_MESSAGE_FIRST();
9973
9974 ctx.idx = 0;
9975 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
9976 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
9977 ptr = ctx.line + ctx.val;
9978 len = ctx.vlen;
9979 while (len--)
9980 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
9981 }
9982
9983 /* now retrieve the path */
9984 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
9985 beg = http_get_path(txn);
9986 if (!beg)
9987 beg = end;
9988
9989 for (ptr = beg; ptr < end ; ptr++);
9990
9991 if (beg < ptr && *beg == '/') {
9992 while (beg < ptr)
9993 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
9994 }
9995 hash = full_hash(hash);
9996
9997 smp->type = SMP_T_UINT;
9998 smp->data.uint = hash;
9999 smp->flags = SMP_F_VOL_1ST;
10000 return 1;
10001}
10002
10003/* This concatenates the source address with the 32-bit hash of the Host and
10004 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
10005 * per-url counters. The result is a binary block from 8 to 20 bytes depending
10006 * on the source address length. The URL hash is stored before the address so
10007 * that in environments where IPv6 is insignificant, truncating the output to
10008 * 8 bytes would still work.
10009 */
10010static int
10011smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]10012 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10013{
10014 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10015 struct connection *cli_conn = objt_conn(l4->si[0].end);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10016
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]10017 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10018 return 0;
10019
10020 temp = get_trash_chunk();
10021 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
10022 temp->len += sizeof(smp->data.uint);
10023
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10024 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10025 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10026 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]10027 temp->len += 4;
10028 break;
10029 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10030 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]10031 temp->len += 16;
10032 break;
10033 default:
10034 return 0;
10035 }
10036
10037 smp->data.str = *temp;
10038 smp->type = SMP_T_BIN;
10039 return 1;
10040}
10041
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10042/* This function is used to validate the arguments passed to any "hdr" fetch
10043 * keyword. These keywords support an optional positive or negative occurrence
10044 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
10045 * is assumed that the types are already the correct ones. Returns 0 on error,
10046 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
10047 * error message in case of error, that the caller is responsible for freeing.
10048 * The initial location must either be freeable or NULL.
10049 */
10050static int val_hdr(struct arg *arg, char **err_msg)
10051{
10052 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]10053 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10054 return 0;
10055 }
10056 return 1;
10057}
10058
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10059/* takes an UINT value on input supposed to represent the time since EPOCH,
10060 * adds an optional offset found in args[0] and emits a string representing
10061 * the date in RFC-1123/5322 format.
10062 */
10063static int sample_conv_http_date(const struct arg *args, struct sample *smp)
10064{
10065 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
10066 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
10067 struct chunk *temp;
10068 struct tm *tm;
10069 time_t curr_date = smp->data.uint;
10070
10071 /* add offset */
10072 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
10073 curr_date += args[0].data.sint;
10074
10075 tm = gmtime(&curr_date);
10076
10077 temp = get_trash_chunk();
10078 temp->len = snprintf(temp->str, temp->size - temp->len,
10079 "%s, %02d %s %04d %02d:%02d:%02d GMT",
10080 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
10081 tm->tm_hour, tm->tm_min, tm->tm_sec);
10082
10083 smp->data.str = *temp;
10084 smp->type = SMP_T_STR;
10085 return 1;
10086}
10087
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10088/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10089/* All supported ACL keywords must be declared here. */
10090/************************************************************************/
10091
10092/* Note: must not be declared <const> as its list will be overwritten.
10093 * Please take care of keeping this list alphabetically sorted.
10094 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]10095static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10096 { "base", "base", pat_parse_str, pat_match_str },
10097 { "base_beg", "base", pat_parse_str, pat_match_beg },
10098 { "base_dir", "base", pat_parse_str, pat_match_dir },
10099 { "base_dom", "base", pat_parse_str, pat_match_dom },
10100 { "base_end", "base", pat_parse_str, pat_match_end },
10101 { "base_len", "base", pat_parse_int, pat_match_len },
10102 { "base_reg", "base", pat_parse_reg, pat_match_reg },
10103 { "base_sub", "base", pat_parse_str, pat_match_sub },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10104
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10105 { "cook", "req.cook", pat_parse_str, pat_match_str },
10106 { "cook_beg", "req.cook", pat_parse_str, pat_match_beg },
10107 { "cook_dir", "req.cook", pat_parse_str, pat_match_dir },
10108 { "cook_dom", "req.cook", pat_parse_str, pat_match_dom },
10109 { "cook_end", "req.cook", pat_parse_str, pat_match_end },
10110 { "cook_len", "req.cook", pat_parse_int, pat_match_len },
10111 { "cook_reg", "req.cook", pat_parse_reg, pat_match_reg },
10112 { "cook_sub", "req.cook", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10113
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10114 { "hdr", "req.hdr", pat_parse_str, pat_match_str },
10115 { "hdr_beg", "req.hdr", pat_parse_str, pat_match_beg },
10116 { "hdr_dir", "req.hdr", pat_parse_str, pat_match_dir },
10117 { "hdr_dom", "req.hdr", pat_parse_str, pat_match_dom },
10118 { "hdr_end", "req.hdr", pat_parse_str, pat_match_end },
10119 { "hdr_len", "req.hdr", pat_parse_int, pat_match_len },
10120 { "hdr_reg", "req.hdr", pat_parse_reg, pat_match_reg },
10121 { "hdr_sub", "req.hdr", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10122
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10123 { "http_auth_group", NULL, pat_parse_strcat, pat_match_auth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10124
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10125 { "method", NULL, pat_parse_meth, pat_match_meth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10126
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10127 { "path", "path", pat_parse_str, pat_match_str },
10128 { "path_beg", "path", pat_parse_str, pat_match_beg },
10129 { "path_dir", "path", pat_parse_str, pat_match_dir },
10130 { "path_dom", "path", pat_parse_str, pat_match_dom },
10131 { "path_end", "path", pat_parse_str, pat_match_end },
10132 { "path_len", "path", pat_parse_int, pat_match_len },
10133 { "path_reg", "path", pat_parse_reg, pat_match_reg },
10134 { "path_sub", "path", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10135
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10136 { "req_ver", "req.ver", pat_parse_str, pat_match_str },
10137 { "resp_ver", "res.ver", pat_parse_str, pat_match_str },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10138
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10139 { "scook", "res.cook", pat_parse_str, pat_match_str },
10140 { "scook_beg", "res.cook", pat_parse_str, pat_match_beg },
10141 { "scook_dir", "res.cook", pat_parse_str, pat_match_dir },
10142 { "scook_dom", "res.cook", pat_parse_str, pat_match_dom },
10143 { "scook_end", "res.cook", pat_parse_str, pat_match_end },
10144 { "scook_len", "res.cook", pat_parse_int, pat_match_len },
10145 { "scook_reg", "res.cook", pat_parse_reg, pat_match_reg },
10146 { "scook_sub", "res.cook", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10147
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10148 { "shdr", "res.hdr", pat_parse_str, pat_match_str },
10149 { "shdr_beg", "res.hdr", pat_parse_str, pat_match_beg },
10150 { "shdr_dir", "res.hdr", pat_parse_str, pat_match_dir },
10151 { "shdr_dom", "res.hdr", pat_parse_str, pat_match_dom },
10152 { "shdr_end", "res.hdr", pat_parse_str, pat_match_end },
10153 { "shdr_len", "res.hdr", pat_parse_int, pat_match_len },
10154 { "shdr_reg", "res.hdr", pat_parse_reg, pat_match_reg },
10155 { "shdr_sub", "res.hdr", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10156
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10157 { "url", "url", pat_parse_str, pat_match_str },
10158 { "url_beg", "url", pat_parse_str, pat_match_beg },
10159 { "url_dir", "url", pat_parse_str, pat_match_dir },
10160 { "url_dom", "url", pat_parse_str, pat_match_dom },
10161 { "url_end", "url", pat_parse_str, pat_match_end },
10162 { "url_len", "url", pat_parse_int, pat_match_len },
10163 { "url_reg", "url", pat_parse_reg, pat_match_reg },
10164 { "url_sub", "url", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10165
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10166 { "urlp", "urlp", pat_parse_str, pat_match_str },
10167 { "urlp_beg", "urlp", pat_parse_str, pat_match_beg },
10168 { "urlp_dir", "urlp", pat_parse_str, pat_match_dir },
10169 { "urlp_dom", "urlp", pat_parse_str, pat_match_dom },
10170 { "urlp_end", "urlp", pat_parse_str, pat_match_end },
10171 { "urlp_len", "urlp", pat_parse_int, pat_match_len },
10172 { "urlp_reg", "urlp", pat_parse_reg, pat_match_reg },
10173 { "urlp_sub", "urlp", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10174
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]10175 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10176}};
10177
10178/************************************************************************/
10179/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10180/************************************************************************/
10181/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]10182static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10183 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10184 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10185 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
10186
10187 /* cookie is valid in both directions (eg: for "stick ...") but cook*
10188 * are only here to match the ACL's name, are request-only and are used
10189 * for ACL compatibility only.
10190 */
10191 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10192 { "cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
10193 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10194 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10195
10196 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
10197 * only here to match the ACL's name, are request-only and are used for
10198 * ACL compatibility only.
10199 */
10200 { "hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
10201 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10202 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10203 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10204
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]10205 { "http_auth", smp_fetch_http_auth, ARG1(1,USR), NULL, SMP_T_BOOL, SMP_USE_HRQHV },
10206 { "http_auth_group", smp_fetch_http_auth_grp, ARG1(1,USR), NULL, SMP_T_BOOL, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10207 { "http_first_req", smp_fetch_http_first_req, 0, NULL, SMP_T_BOOL, SMP_USE_HRQHP },
10208 { "method", smp_fetch_meth, 0, NULL, SMP_T_UINT, SMP_USE_HRQHP },
10209 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10210
10211 /* HTTP protocol on the request path */
10212 { "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]10213 { "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]10214
10215 /* HTTP version on the request path */
10216 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10217 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10218
10219 /* HTTP version on the response path */
10220 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_CSTR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10221 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10222
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10223 /* explicit req.{cook,hdr} are used to force the fetch direction to be request-only */
10224 { "req.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10225 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10226 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10227
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10228 { "req.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV },
10229 { "req.fhdr_cnt", smp_fetch_fhdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10230 { "req.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV },
10231 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10232 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10233 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10234
10235 /* explicit req.{cook,hdr} are used to force the fetch direction to be response-only */
10236 { "res.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10237 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10238 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10239
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10240 { "res.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10241 { "res.fhdr_cnt", smp_fetch_fhdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10242 { "res.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10243 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10244 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10245 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10246
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10247 /* scook is valid only on the response and is used for ACL compatibility */
10248 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10249 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10250 { "scook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10251 { "set-cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV }, /* deprecated */
10252
10253 /* shdr is valid only on the response and is used for ACL compatibility */
10254 { "shdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10255 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10256 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10257 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10258
10259 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
10260 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10261 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10262 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10263 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
10264 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10265 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10266 { "urlp" , smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10267 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10268 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10269}};
10270
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10271
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10272/* Note: must not be declared <const> as its list will be overwritten */
10273static struct sample_conv_kw_list sample_conv_kws = {ILH, {
10274 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR },
10275 { NULL, NULL, 0, 0, 0 },
10276}};
10277
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10278__attribute__((constructor))
10279static void __http_protocol_init(void)
10280{
10281 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10282 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10283 sample_register_convs(&sample_conv_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10284}
10285
10286
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]10287/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]10288 * Local variables:
10289 * c-indent-level: 8
10290 * c-basic-offset: 8
10291 * End:
10292 */