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git01.mediatek.com / haproxy / e38feed966070142e1fd5d3033c9e999a9ffe83c / . / src / proto_http.c
blob: 82863ad9de591ec244ad0c9a488c4acf723128be [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{
4284 /* FIXME: We need a more portable way of releasing a backend's and a
4285 * server's connections. We need a safer way to reinitialize buffer
4286 * flags. We also need a more accurate method for computing per-request
4287 * data.
4288 */
4289 http_silent_debug(__LINE__, s);
4290
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4291 /* unless we're doing keep-alive, we want to quickly close the connection
4292 * to the server.
4293 */
4294 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4295 !si_conn_ready(s->req->cons)) {
4296 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4297 si_shutr(s->req->cons);
4298 si_shutw(s->req->cons);
4299 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4300
4301 http_silent_debug(__LINE__, s);
4302
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4303 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4304 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4305 if (unlikely(s->srv_conn))
4306 sess_change_server(s, NULL);
4307 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4308
4309 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4310 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4311 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4312
4313 if (s->txn.status) {
4314 int n;
4315
4316 n = s->txn.status / 100;
4317 if (n < 1 || n > 5)
4318 n = 0;
4319
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4320 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4321 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4322 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4323 s->fe->fe_counters.p.http.comp_rsp++;
4324 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4325 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4326 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4327 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4328 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4329 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4330 s->be->be_counters.p.http.comp_rsp++;
4331 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4332 }
4333
4334 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4335 s->logs.bytes_in -= s->req->buf->i;
4336 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4337
4338 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4339 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4340 !(s->flags & SN_MONITOR) &&
4341 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4342 s->do_log(s);
4343 }
4344
4345 s->logs.accept_date = date; /* user-visible date for logging */
4346 s->logs.tv_accept = now; /* corrected date for internal use */
4347 tv_zero(&s->logs.tv_request);
4348 s->logs.t_queue = -1;
4349 s->logs.t_connect = -1;
4350 s->logs.t_data = -1;
4351 s->logs.t_close = 0;
4352 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4353 s->logs.srv_queue_size = 0; /* we will get this number soon */
4354
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4355 s->logs.bytes_in = s->req->total = s->req->buf->i;
4356 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4357
4358 if (s->pend_pos)
4359 pendconn_free(s->pend_pos);
4360
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4361 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4362 if (s->flags & SN_CURR_SESS) {
4363 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4364 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4365 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4366 if (may_dequeue_tasks(objt_server(s->target), s->be))
4367 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4368 }
4369
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4370 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4371
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4372 /* only release our endpoint if we don't intend to reuse the
4373 * connection.
4374 */
4375 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4376 !si_conn_ready(s->req->cons)) {
4377 si_release_endpoint(s->req->cons);
4378 }
4379
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4380 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4381 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4382 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4383 s->req->cons->exp = TICK_ETERNITY;
4384 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4385 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4386 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]4387 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]4388 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4389
4390 if (s->flags & SN_COMP_READY)
4391 s->comp_algo->end(&s->comp_ctx);
4392 s->comp_algo = NULL;
4393 s->flags &= ~SN_COMP_READY;
4394
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4395 s->txn.meth = 0;
4396 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4397 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4398 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4399 s->req->cons->flags |= SI_FL_INDEP_STR;
4400
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4401 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4402 s->req->flags |= CF_NEVER_WAIT;
4403 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4404 }
4405
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4406 /* if the request buffer is not empty, it means we're
4407 * about to process another request, so send pending
4408 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4409 * Just don't do this if the buffer is close to be full,
4410 * because the request will wait for it to flush a little
4411 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4412 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4413 if (s->req->buf->i) {
4414 if (s->rep->buf->o &&
4415 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4416 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]4417 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4418 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4419
4420 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4421 channel_auto_read(s->req);
4422 channel_auto_close(s->req);
4423 channel_auto_read(s->rep);
4424 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4425
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4426 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4427 s->rep->analysers = 0;
4428
4429 http_silent_debug(__LINE__, s);
4430}
4431
4432
4433/* This function updates the request state machine according to the response
4434 * state machine and buffer flags. It returns 1 if it changes anything (flag
4435 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4436 * it is only used to find when a request/response couple is complete. Both
4437 * this function and its equivalent should loop until both return zero. It
4438 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4439 */
4440int http_sync_req_state(struct session *s)
4441{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4442 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4443 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4444 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4445 unsigned int old_state = txn->req.msg_state;
4446
4447 http_silent_debug(__LINE__, s);
4448 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4449 return 0;
4450
4451 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4452 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4453 * We can shut the read side unless we want to abort_on_close,
4454 * or we have a POST request. The issue with POST requests is
4455 * that some browsers still send a CRLF after the request, and
4456 * this CRLF must be read so that it does not remain in the kernel
4457 * buffers, otherwise a close could cause an RST on some systems
4458 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4459 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4460 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4461 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4462
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4463 /* if the server closes the connection, we want to immediately react
4464 * and close the socket to save packets and syscalls.
4465 */
4466 chn->cons->flags |= SI_FL_NOHALF;
4467
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4468 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4469 goto wait_other_side;
4470
4471 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4472 /* The server has not finished to respond, so we
4473 * don't want to move in order not to upset it.
4474 */
4475 goto wait_other_side;
4476 }
4477
4478 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4479 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4480 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4481 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4482 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4483 goto wait_other_side;
4484 }
4485
4486 /* When we get here, it means that both the request and the
4487 * response have finished receiving. Depending on the connection
4488 * mode, we'll have to wait for the last bytes to leave in either
4489 * direction, and sometimes for a close to be effective.
4490 */
4491
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4492 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4493 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4494 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4495 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4496 }
4497 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4498 /* Option forceclose is set, or either side wants to close,
4499 * let's enforce it now that we're not expecting any new
4500 * data to come. The caller knows the session is complete
4501 * once both states are CLOSED.
4502 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4503 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4504 channel_shutr_now(chn);
4505 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4506 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4507 }
4508 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4509 /* The last possible modes are keep-alive and tunnel. Tunnel mode
4510 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4511 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4512 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
4513 channel_auto_read(chn);
4514 txn->req.msg_state = HTTP_MSG_TUNNEL;
4515 chn->flags |= CF_NEVER_WAIT;
4516 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4517 }
4518
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4519 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4520 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4521 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4522
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4523 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4524 txn->req.msg_state = HTTP_MSG_CLOSING;
4525 goto http_msg_closing;
4526 }
4527 else {
4528 txn->req.msg_state = HTTP_MSG_CLOSED;
4529 goto http_msg_closed;
4530 }
4531 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4532 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4533 }
4534
4535 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4536 http_msg_closing:
4537 /* nothing else to forward, just waiting for the output buffer
4538 * to be empty and for the shutw_now to take effect.
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_CLOSED;
4542 goto http_msg_closed;
4543 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4544 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4545 txn->req.msg_state = HTTP_MSG_ERROR;
4546 goto wait_other_side;
4547 }
4548 }
4549
4550 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4551 http_msg_closed:
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]4552 if (!(s->be->options & PR_O_ABRT_CLOSE))
4553 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4554 goto wait_other_side;
4555 }
4556
4557 wait_other_side:
4558 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4559 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4560}
4561
4562
4563/* This function updates the response state machine according to the request
4564 * state machine and buffer flags. It returns 1 if it changes anything (flag
4565 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4566 * it is only used to find when a request/response couple is complete. Both
4567 * this function and its equivalent should loop until both return zero. It
4568 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4569 */
4570int http_sync_res_state(struct session *s)
4571{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4572 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4573 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4574 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4575 unsigned int old_state = txn->rsp.msg_state;
4576
4577 http_silent_debug(__LINE__, s);
4578 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4579 return 0;
4580
4581 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4582 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4583 * still monitor the server connection for a possible close
4584 * while the request is being uploaded, so we don't disable
4585 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4586 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4587 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4588
4589 if (txn->req.msg_state == HTTP_MSG_ERROR)
4590 goto wait_other_side;
4591
4592 if (txn->req.msg_state < HTTP_MSG_DONE) {
4593 /* The client seems to still be sending data, probably
4594 * because we got an error response during an upload.
4595 * We have the choice of either breaking the connection
4596 * or letting it pass through. Let's do the later.
4597 */
4598 goto wait_other_side;
4599 }
4600
4601 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4602 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4603 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4604 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4605 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4606 goto wait_other_side;
4607 }
4608
4609 /* When we get here, it means that both the request and the
4610 * response have finished receiving. Depending on the connection
4611 * mode, we'll have to wait for the last bytes to leave in either
4612 * direction, and sometimes for a close to be effective.
4613 */
4614
4615 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4616 /* Server-close mode : shut read and wait for the request
4617 * side to close its output buffer. The caller will detect
4618 * when we're in DONE and the other is in CLOSED and will
4619 * catch that for the final cleanup.
4620 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4621 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4622 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4623 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4624 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4625 /* Option forceclose is set, or either side wants to close,
4626 * let's enforce it now that we're not expecting any new
4627 * data to come. The caller knows the session is complete
4628 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4629 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4630 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4631 channel_shutr_now(chn);
4632 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4633 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4634 }
4635 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4636 /* The last possible modes are keep-alive and tunnel. Tunnel will
4637 * need to forward remaining data. Keep-alive will need to monitor
4638 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4639 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4640 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4641 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4642 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
4643 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4644 }
4645
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4646 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4647 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4648 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4649 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4650 goto http_msg_closing;
4651 }
4652 else {
4653 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4654 goto http_msg_closed;
4655 }
4656 }
4657 goto wait_other_side;
4658 }
4659
4660 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4661 http_msg_closing:
4662 /* nothing else to forward, just waiting for the output buffer
4663 * to be empty and for the shutw_now to take effect.
4664 */
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_CLOSED;
4667 goto http_msg_closed;
4668 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4669 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4670 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4671 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4672 if (objt_server(s->target))
4673 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4674 goto wait_other_side;
4675 }
4676 }
4677
4678 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4679 http_msg_closed:
4680 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4681 bi_erase(chn);
4682 channel_auto_close(chn);
4683 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4684 goto wait_other_side;
4685 }
4686
4687 wait_other_side:
4688 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4689 /* We force the response to leave immediately if we're waiting for the
4690 * other side, since there is no pending shutdown to push it out.
4691 */
4692 if (!channel_is_empty(chn))
4693 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4694 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4695}
4696
4697
4698/* Resync the request and response state machines. Return 1 if either state
4699 * changes.
4700 */
4701int http_resync_states(struct session *s)
4702{
4703 struct http_txn *txn = &s->txn;
4704 int old_req_state = txn->req.msg_state;
4705 int old_res_state = txn->rsp.msg_state;
4706
4707 http_silent_debug(__LINE__, s);
4708 http_sync_req_state(s);
4709 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4710 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4711 if (!http_sync_res_state(s))
4712 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4713 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4714 if (!http_sync_req_state(s))
4715 break;
4716 }
4717 http_silent_debug(__LINE__, s);
4718 /* OK, both state machines agree on a compatible state.
4719 * There are a few cases we're interested in :
4720 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4721 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4722 * directions, so let's simply disable both analysers.
4723 * - HTTP_MSG_CLOSED on the response only means we must abort the
4724 * request.
4725 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4726 * with server-close mode means we've completed one request and we
4727 * must re-initialize the server connection.
4728 */
4729
4730 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4731 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4732 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4733 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4734 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4735 channel_auto_close(s->req);
4736 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4737 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4738 channel_auto_close(s->rep);
4739 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4740 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4741 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
4742 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4743 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4744 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4745 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4746 channel_auto_close(s->rep);
4747 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4748 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4749 channel_abort(s->req);
4750 channel_auto_close(s->req);
4751 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4752 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4753 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4754 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
4755 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4756 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4757 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4758 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4759 /* server-close/keep-alive: terminate this transaction,
4760 * possibly killing the server connection and reinitialize
4761 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4762 */
4763 http_end_txn_clean_session(s);
4764 }
4765
4766 http_silent_debug(__LINE__, s);
4767 return txn->req.msg_state != old_req_state ||
4768 txn->rsp.msg_state != old_res_state;
4769}
4770
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4771/* This function is an analyser which forwards request body (including chunk
4772 * sizes if any). It is called as soon as we must forward, even if we forward
4773 * zero byte. The only situation where it must not be called is when we're in
4774 * tunnel mode and we want to forward till the close. It's used both to forward
4775 * remaining data and to resync after end of body. It expects the msg_state to
4776 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4777 * 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]4778 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4779 * bytes of pending data + the headers if not already done (between sol and sov).
4780 * 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]4781 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4782int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4783{
4784 struct http_txn *txn = &s->txn;
4785 struct http_msg *msg = &s->txn.req;
4786
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4787 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4788 return 0;
4789
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4790 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]4791 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4792 /* Output closed while we were sending data. We must abort and
4793 * wake the other side up.
4794 */
4795 msg->msg_state = HTTP_MSG_ERROR;
4796 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4797 return 1;
4798 }
4799
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4800 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4801 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4802
4803 /* Note that we don't have to send 100-continue back because we don't
4804 * need the data to complete our job, and it's up to the server to
4805 * decide whether to return 100, 417 or anything else in return of
4806 * an "Expect: 100-continue" header.
4807 */
4808
4809 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4810 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4811 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4812 * is still null. We must save the body in msg->next because it
4813 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4814 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4815 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4816
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4817 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4818 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4819 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4820 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4821 }
4822
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4823 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4824 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4825
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4826 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4827 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4828 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4829 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4830 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4831 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4832 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4833 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4834 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4835
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4836 if (msg->msg_state == HTTP_MSG_DATA) {
4837 /* must still forward */
4838 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4839 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4840
4841 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4842 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4843 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4844 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4845 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4846 }
4847 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4848 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4849 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4850 * TRAILERS state.
4851 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4852 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4853
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4854 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4855 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4856 else if (ret < 0) {
4857 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4858 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4859 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]4860 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4861 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4862 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4863 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4864 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4865 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4866 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4867
4868 if (ret == 0)
4869 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4870 else if (ret < 0) {
4871 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4872 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4873 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]4874 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4875 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4876 /* we're in MSG_CHUNK_SIZE now */
4877 }
4878 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4879 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4880
4881 if (ret == 0)
4882 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4883 else if (ret < 0) {
4884 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4885 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4886 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]4887 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4888 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4889 /* we're in HTTP_MSG_DONE now */
4890 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4891 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4892 int old_state = msg->msg_state;
4893
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4894 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4895 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4896 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4897 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4898 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4899 if (http_resync_states(s)) {
4900 /* some state changes occurred, maybe the analyser
4901 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4902 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4903 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4904 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4905 /* request errors are most likely due to
4906 * the server aborting the transfer.
4907 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4908 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4909 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4910 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4911 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4912 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4913 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4914 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4915 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4916
4917 /* If "option abortonclose" is set on the backend, we
4918 * want to monitor the client's connection and forward
4919 * any shutdown notification to the server, which will
4920 * decide whether to close or to go on processing the
4921 * request.
4922 */
4923 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4924 channel_auto_read(req);
4925 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4926 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4927 else if (s->txn.meth == HTTP_METH_POST) {
4928 /* POST requests may require to read extra CRLF
4929 * sent by broken browsers and which could cause
4930 * an RST to be sent upon close on some systems
4931 * (eg: Linux).
4932 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4933 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4934 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4935
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4936 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4937 }
4938 }
4939
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4940 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4941 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4942 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4943 if (!(s->flags & SN_ERR_MASK))
4944 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4945 if (!(s->flags & SN_FINST_MASK)) {
4946 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4947 s->flags |= SN_FINST_H;
4948 else
4949 s->flags |= SN_FINST_D;
4950 }
4951
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4952 s->fe->fe_counters.cli_aborts++;
4953 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4954 if (objt_server(s->target))
4955 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4956
4957 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4958 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4959
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4960 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4961 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4962 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4963
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4964 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4965 * 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]4966 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4967 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4968 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4969
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4970 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4971 * 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]4972 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4973 * modes are already handled by the stream sock layer. We must not do
4974 * this in content-length mode because it could present the MSG_MORE
4975 * flag with the last block of forwarded data, which would cause an
4976 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4977 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4978 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4979 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4980
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4981 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4982 return 0;
4983
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4984 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4985 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4986 if (s->listener->counters)
4987 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4988 return_bad_req_stats_ok:
4989 txn->req.msg_state = HTTP_MSG_ERROR;
4990 if (txn->status) {
4991 /* Note: we don't send any error if some data were already sent */
4992 stream_int_retnclose(req->prod, NULL);
4993 } else {
4994 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4995 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4996 }
4997 req->analysers = 0;
4998 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]4999
5000 if (!(s->flags & SN_ERR_MASK))
5001 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5002 if (!(s->flags & SN_FINST_MASK)) {
5003 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5004 s->flags |= SN_FINST_H;
5005 else
5006 s->flags |= SN_FINST_D;
5007 }
5008 return 0;
5009
5010 aborted_xfer:
5011 txn->req.msg_state = HTTP_MSG_ERROR;
5012 if (txn->status) {
5013 /* Note: we don't send any error if some data were already sent */
5014 stream_int_retnclose(req->prod, NULL);
5015 } else {
5016 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5017 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5018 }
5019 req->analysers = 0;
5020 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5021
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5022 s->fe->fe_counters.srv_aborts++;
5023 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5024 if (objt_server(s->target))
5025 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5026
5027 if (!(s->flags & SN_ERR_MASK))
5028 s->flags |= SN_ERR_SRVCL;
5029 if (!(s->flags & SN_FINST_MASK)) {
5030 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5031 s->flags |= SN_FINST_H;
5032 else
5033 s->flags |= SN_FINST_D;
5034 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5035 return 0;
5036}
5037
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5038/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5039 * processing can continue on next analysers, or zero if it either needs more
5040 * data or wants to immediately abort the response (eg: timeout, error, ...). It
5041 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
5042 * when it has nothing left to do, and may remove any analyser when it wants to
5043 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5044 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5045int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5046{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5047 struct http_txn *txn = &s->txn;
5048 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5049 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5050 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5051 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5052 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5053
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5054 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]5055 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5056 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5057 rep,
5058 rep->rex, rep->wex,
5059 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5060 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5061 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5062
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5063 /*
5064 * Now parse the partial (or complete) lines.
5065 * We will check the response syntax, and also join multi-line
5066 * headers. An index of all the lines will be elaborated while
5067 * parsing.
5068 *
5069 * For the parsing, we use a 28 states FSM.
5070 *
5071 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5072 * rep->buf->p = beginning of response
5073 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5074 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5075 * msg->eol = end of current header or line (LF or CRLF)
5076 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5077 */
5078
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5079 /* There's a protected area at the end of the buffer for rewriting
5080 * purposes. We don't want to start to parse the request if the
5081 * protected area is affected, because we may have to move processed
5082 * data later, which is much more complicated.
5083 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5084 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5085 if (unlikely(!channel_reserved(rep))) {
5086 /* some data has still not left the buffer, wake us once that's done */
5087 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5088 goto abort_response;
5089 channel_dont_close(rep);
5090 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
5091 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5092 }
5093
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5094 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5095 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5096 buffer_slow_realign(rep->buf);
5097
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5098 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5099 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5100 }
5101
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5102 /* 1: we might have to print this header in debug mode */
5103 if (unlikely((global.mode & MODE_DEBUG) &&
5104 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5105 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5106 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5107
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5108 sol = rep->buf->p;
5109 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5110 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5111
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5112 sol += hdr_idx_first_pos(&txn->hdr_idx);
5113 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5114
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5115 while (cur_idx) {
5116 eol = sol + txn->hdr_idx.v[cur_idx].len;
5117 debug_hdr("srvhdr", s, sol, eol);
5118 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5119 cur_idx = txn->hdr_idx.v[cur_idx].next;
5120 }
5121 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5122
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5123 /*
5124 * Now we quickly check if we have found a full valid response.
5125 * If not so, we check the FD and buffer states before leaving.
5126 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5127 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5128 * responses are checked first.
5129 *
5130 * Depending on whether the client is still there or not, we
5131 * may send an error response back or not. Note that normally
5132 * we should only check for HTTP status there, and check I/O
5133 * errors somewhere else.
5134 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5135
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5136 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5137 /* Invalid response */
5138 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5139 /* we detected a parsing error. We want to archive this response
5140 * in the dedicated proxy area for later troubleshooting.
5141 */
5142 hdr_response_bad:
5143 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5144 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]5145
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5146 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5147 if (objt_server(s->target)) {
5148 objt_server(s->target)->counters.failed_resp++;
5149 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5150 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5151 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5152 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5153 rep->analysers = 0;
5154 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5155 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5156 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5157 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5158
5159 if (!(s->flags & SN_ERR_MASK))
5160 s->flags |= SN_ERR_PRXCOND;
5161 if (!(s->flags & SN_FINST_MASK))
5162 s->flags |= SN_FINST_H;
5163
5164 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5165 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5166
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5167 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5168 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5169 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5170 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5171 goto hdr_response_bad;
5172 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5173
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5174 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5175 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5176 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5177 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]5178 else if (txn->flags & TX_NOT_FIRST)
5179 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5180
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5181 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5182 if (objt_server(s->target)) {
5183 objt_server(s->target)->counters.failed_resp++;
5184 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5185 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5186
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5187 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5188 rep->analysers = 0;
5189 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5190 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5191 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5192 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5193
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5194 if (!(s->flags & SN_ERR_MASK))
5195 s->flags |= SN_ERR_SRVCL;
5196 if (!(s->flags & SN_FINST_MASK))
5197 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5198 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5199 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5200
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5201 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5202 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5203 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5204 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]5205 else if (txn->flags & TX_NOT_FIRST)
5206 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5207
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5208 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5209 if (objt_server(s->target)) {
5210 objt_server(s->target)->counters.failed_resp++;
5211 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5212 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5213
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5214 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5215 rep->analysers = 0;
5216 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5217 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5218 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5219 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5220
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5221 if (!(s->flags & SN_ERR_MASK))
5222 s->flags |= SN_ERR_SRVTO;
5223 if (!(s->flags & SN_FINST_MASK))
5224 s->flags |= SN_FINST_H;
5225 return 0;
5226 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5227
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5228 /* client abort with an abortonclose */
5229 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5230 s->fe->fe_counters.cli_aborts++;
5231 s->be->be_counters.cli_aborts++;
5232 if (objt_server(s->target))
5233 objt_server(s->target)->counters.cli_aborts++;
5234
5235 rep->analysers = 0;
5236 channel_auto_close(rep);
5237
5238 txn->status = 400;
5239 bi_erase(rep);
5240 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5241
5242 if (!(s->flags & SN_ERR_MASK))
5243 s->flags |= SN_ERR_CLICL;
5244 if (!(s->flags & SN_FINST_MASK))
5245 s->flags |= SN_FINST_H;
5246
5247 /* process_session() will take care of the error */
5248 return 0;
5249 }
5250
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5251 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5252 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5253 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5254 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]5255 else if (txn->flags & TX_NOT_FIRST)
5256 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5257
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5258 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5259 if (objt_server(s->target)) {
5260 objt_server(s->target)->counters.failed_resp++;
5261 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5262 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5263
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5264 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5265 rep->analysers = 0;
5266 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5267 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5268 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5269 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5270
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5271 if (!(s->flags & SN_ERR_MASK))
5272 s->flags |= SN_ERR_SRVCL;
5273 if (!(s->flags & SN_FINST_MASK))
5274 s->flags |= SN_FINST_H;
5275 return 0;
5276 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5277
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5278 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5279 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5280 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5281 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]5282 else if (txn->flags & TX_NOT_FIRST)
5283 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5284
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5285 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5286 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5287 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5288
5289 if (!(s->flags & SN_ERR_MASK))
5290 s->flags |= SN_ERR_CLICL;
5291 if (!(s->flags & SN_FINST_MASK))
5292 s->flags |= SN_FINST_H;
5293
5294 /* process_session() will take care of the error */
5295 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5296 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5297
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5298 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5299 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5300 return 0;
5301 }
5302
5303 /* More interesting part now : we know that we have a complete
5304 * response which at least looks like HTTP. We have an indicator
5305 * of each header's length, so we can parse them quickly.
5306 */
5307
5308 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5309 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]5310
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5311 /*
5312 * 1: get the status code
5313 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5314 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5315 if (n < 1 || n > 5)
5316 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5317 /* when the client triggers a 4xx from the server, it's most often due
5318 * to a missing object or permission. These events should be tracked
5319 * because if they happen often, it may indicate a brute force or a
5320 * vulnerability scan.
5321 */
5322 if (n == 4)
5323 session_inc_http_err_ctr(s);
5324
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5325 if (objt_server(s->target))
5326 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5327
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5328 /* check if the response is HTTP/1.1 or above */
5329 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5330 ((rep->buf->p[5] > '1') ||
5331 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5332 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5333
5334 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5335 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]5336
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5337 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5338 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5339
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5340 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]5341
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5342 /* Adjust server's health based on status code. Note: status codes 501
5343 * and 505 are triggered on demand by client request, so we must not
5344 * count them as server failures.
5345 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5346 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5347 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5348 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5349 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5350 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5351 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5352
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5353 /*
5354 * 2: check for cacheability.
5355 */
5356
5357 switch (txn->status) {
5358 case 200:
5359 case 203:
5360 case 206:
5361 case 300:
5362 case 301:
5363 case 410:
5364 /* RFC2616 @13.4:
5365 * "A response received with a status code of
5366 * 200, 203, 206, 300, 301 or 410 MAY be stored
5367 * by a cache (...) unless a cache-control
5368 * directive prohibits caching."
5369 *
5370 * RFC2616 @9.5: POST method :
5371 * "Responses to this method are not cacheable,
5372 * unless the response includes appropriate
5373 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5374 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5375 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5376 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5377 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5378 break;
5379 default:
5380 break;
5381 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5382
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5383 /*
5384 * 3: we may need to capture headers
5385 */
5386 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5387 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5388 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5389 txn->rsp.cap, s->fe->rsp_cap);
5390
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5391 /* 4: determine the transfer-length.
5392 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5393 * the presence of a message-body in a RESPONSE and its transfer length
5394 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5395 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5396 * All responses to the HEAD request method MUST NOT include a
5397 * message-body, even though the presence of entity-header fields
5398 * might lead one to believe they do. All 1xx (informational), 204
5399 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5400 * message-body. All other responses do include a message-body,
5401 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5402 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5403 * 1. Any response which "MUST NOT" include a message-body (such as the
5404 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5405 * always terminated by the first empty line after the header fields,
5406 * regardless of the entity-header fields present in the message.
5407 *
5408 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5409 * the "chunked" transfer-coding (Section 6.2) is used, the
5410 * transfer-length is defined by the use of this transfer-coding.
5411 * If a Transfer-Encoding header field is present and the "chunked"
5412 * transfer-coding is not present, the transfer-length is defined by
5413 * the sender closing the connection.
5414 *
5415 * 3. If a Content-Length header field is present, its decimal value in
5416 * OCTETs represents both the entity-length and the transfer-length.
5417 * If a message is received with both a Transfer-Encoding header
5418 * field and a Content-Length header field, the latter MUST be ignored.
5419 *
5420 * 4. If the message uses the media type "multipart/byteranges", and
5421 * the transfer-length is not otherwise specified, then this self-
5422 * delimiting media type defines the transfer-length. This media
5423 * type MUST NOT be used unless the sender knows that the recipient
5424 * can parse it; the presence in a request of a Range header with
5425 * multiple byte-range specifiers from a 1.1 client implies that the
5426 * client can parse multipart/byteranges responses.
5427 *
5428 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5429 */
5430
5431 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5432 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5433 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5434 * FIXME: should we parse anyway and return an error on chunked encoding ?
5435 */
5436 if (txn->meth == HTTP_METH_HEAD ||
5437 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5438 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5439 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5440 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5441 goto skip_content_length;
5442 }
5443
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5444 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5445 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5446 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5447 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5448 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5449 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5450 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5451 /* bad transfer-encoding (chunked followed by something else) */
5452 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5453 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5454 break;
5455 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5456 }
5457
5458 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5459 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5460 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5461 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5462 signed long long cl;
5463
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5464 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5465 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5466 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5467 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5468
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5469 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5470 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5471 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5472 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5473
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5474 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5475 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5476 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5477 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5478
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5479 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5480 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5481 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5482 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5483
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5484 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5485 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5486 }
5487
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5488 if (s->fe->comp || s->be->comp)
5489 select_compression_response_header(s, rep->buf);
5490
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5491 /* FIXME: we should also implement the multipart/byterange method.
5492 * For now on, we resort to close mode in this case (unknown length).
5493 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5494skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5495
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5496 /* end of job, return OK */
5497 rep->analysers &= ~an_bit;
5498 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5499 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5500 return 1;
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5501
5502 abort_keep_alive:
5503 /* A keep-alive request to the server failed on a network error.
5504 * The client is required to retry. We need to close without returning
5505 * any other information so that the client retries.
5506 */
5507 txn->status = 0;
5508 rep->analysers = 0;
5509 s->req->analysers = 0;
5510 channel_auto_close(rep);
5511 s->logs.logwait = 0;
5512 s->logs.level = 0;
5513 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
5514 bi_erase(rep);
5515 stream_int_retnclose(rep->cons, NULL);
5516 return 0;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5517}
5518
5519/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5520 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5521 * and updates t->rep->analysers. It might make sense to explode it into several
5522 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5523 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5524int 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]5525{
5526 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5527 struct http_msg *msg = &txn->rsp;
5528 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5529 struct cond_wordlist *wl;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5530 struct http_res_rule *http_res_last_rule = NULL;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5531
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5532 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]5533 now_ms, __FUNCTION__,
5534 t,
5535 rep,
5536 rep->rex, rep->wex,
5537 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5538 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5539 rep->analysers);
5540
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5541 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5542 return 0;
5543
5544 rep->analysers &= ~an_bit;
5545 rep->analyse_exp = TICK_ETERNITY;
5546
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5547 /* Now we have to check if we need to modify the Connection header.
5548 * This is more difficult on the response than it is on the request,
5549 * because we can have two different HTTP versions and we don't know
5550 * how the client will interprete a response. For instance, let's say
5551 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5552 * HTTP/1.1 response without any header. Maybe it will bound itself to
5553 * HTTP/1.0 because it only knows about it, and will consider the lack
5554 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5555 * the lack of header as a keep-alive. Thus we will use two flags
5556 * indicating how a request MAY be understood by the client. In case
5557 * of multiple possibilities, we'll fix the header to be explicit. If
5558 * ambiguous cases such as both close and keepalive are seen, then we
5559 * will fall back to explicit close. Note that we won't take risks with
5560 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5561 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5562 */
5563
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5564 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5565 txn->status == 101)) {
5566 /* Either we've established an explicit tunnel, or we're
5567 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5568 * to understand the next protocols. We have to switch to tunnel
5569 * mode, so that we transfer the request and responses then let
5570 * this protocol pass unmodified. When we later implement specific
5571 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5572 * header which contains information about that protocol for
5573 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5574 */
5575 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5576 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5577 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5578 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5579 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5580 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5581
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5582 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5583 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5584 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5585 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5586
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5587 /* now adjust header transformations depending on current state */
5588 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5589 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5590 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5591 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5592 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5593 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5594 else { /* SCL / KAL */
5595 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5596 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5597 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5598 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5599
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5600 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5601 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5602
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5603 /* Some keep-alive responses are converted to Server-close if
5604 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5605 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5606 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5607 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5608 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5609 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5610 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5611 }
5612
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5613 /* we want to have the response time before we start processing it */
5614 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
5615
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5616 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5617 /*
5618 * 3: we will have to evaluate the filters.
5619 * As opposed to version 1.2, now they will be evaluated in the
5620 * filters order and not in the header order. This means that
5621 * each filter has to be validated among all headers.
5622 *
5623 * Filters are tried with ->be first, then with ->fe if it is
5624 * different from ->be.
5625 */
5626
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5627 cur_proxy = t->be;
5628 while (1) {
5629 struct proxy *rule_set = cur_proxy;
5630
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5631 /* evaluate http-response rules */
5632 if (!http_res_last_rule)
5633 http_res_last_rule = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, t, txn);
5634
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5635 /* try headers filters */
5636 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5637 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5638 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5639 if (objt_server(t->target)) {
5640 objt_server(t->target)->counters.failed_resp++;
5641 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5642 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5643 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5644 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5645 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5646 txn->status = 502;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5647 t->logs.t_data = -1; /* was not a valid response */
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5648 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5649 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5650 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5651 if (!(t->flags & SN_ERR_MASK))
5652 t->flags |= SN_ERR_PRXCOND;
5653 if (!(t->flags & SN_FINST_MASK))
5654 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5655 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5656 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5657 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5658
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5659 /* has the response been denied ? */
5660 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5661 if (objt_server(t->target))
5662 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5663
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5664 t->be->be_counters.denied_resp++;
5665 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5666 if (t->listener->counters)
5667 t->listener->counters->denied_resp++;
5668
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5669 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5670 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5671
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5672 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5673 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5674 if (txn->status < 200)
5675 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5676 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5677 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]5678 ret = acl_pass(ret);
5679 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5680 ret = !ret;
5681 if (!ret)
5682 continue;
5683 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5684 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5685 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5686 }
5687
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5688 /* check whether we're already working on the frontend */
5689 if (cur_proxy == t->fe)
5690 break;
5691 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5692 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5693
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5694 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5695 * We may be facing a 100-continue response, in which case this
5696 * is not the right response, and we're waiting for the next one.
5697 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5698 * next one.
5699 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5700 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5701 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5702 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5703 msg->msg_state = HTTP_MSG_RPBEFORE;
5704 txn->status = 0;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5705 t->logs.t_data = -1; /* was not a response yet */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5706 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5707 return 1;
5708 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5709 else if (unlikely(txn->status < 200))
5710 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5711
5712 /* we don't have any 1xx status code now */
5713
5714 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5715 * 4: check for server cookie.
5716 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5717 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5718 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5719 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5720
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5721
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5722 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5723 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5724 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5725 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]5726 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5727
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5728 /*
5729 * 6: add server cookie in the response if needed
5730 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5731 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5732 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5733 (!(t->flags & SN_DIRECT) ||
5734 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5735 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5736 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5737 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5738 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5739 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5740 /* the server is known, it's not the one the client requested, or the
5741 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5742 * insert a set-cookie here, except if we want to insert only on POST
5743 * requests and this one isn't. Note that servers which don't have cookies
5744 * (eg: some backup servers) will return a full cookie removal request.
5745 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5746 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5747 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5748 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5749 t->be->cookie_name);
5750 }
5751 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5752 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]5753
5754 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5755 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5756 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5757 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5758 trash.len += 5;
5759
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5760 if (t->be->cookie_maxlife) {
5761 /* emit first_date, which is either the original one or
5762 * the current date.
5763 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5764 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5765 s30tob64(txn->cookie_first_date ?
5766 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5767 (date.tv_sec+3) >> 2, trash.str + trash.len);
5768 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5769 }
5770 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5771 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5772 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5773
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5774 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5775 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5776
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5777 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5778 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5779
5780 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5781 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5782
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5783 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]5784 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5785
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5786 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5787 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5788 /* the server did not change, only the date was updated */
5789 txn->flags |= TX_SCK_UPDATED;
5790 else
5791 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5792
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5793 /* Here, we will tell an eventual cache on the client side that we don't
5794 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5795 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5796 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5797 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5798 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5799
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5800 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5801
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5802 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5803 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5804 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5805 }
5806 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5807
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5808 /*
5809 * 7: check if result will be cacheable with a cookie.
5810 * We'll block the response if security checks have caught
5811 * nasty things such as a cacheable cookie.
5812 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5813 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5814 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5815 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5816
5817 /* we're in presence of a cacheable response containing
5818 * a set-cookie header. We'll block it as requested by
5819 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5820 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5821 if (objt_server(t->target))
5822 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5823
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5824 t->be->be_counters.denied_resp++;
5825 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5826 if (t->listener->counters)
5827 t->listener->counters->denied_resp++;
5828
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5829 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5830 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5831 send_log(t->be, LOG_ALERT,
5832 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5833 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5834 goto return_srv_prx_502;
5835 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5836
5837 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5838 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5839 * If an "Upgrade" token is found, the header is left untouched in order
5840 * not to have to deal with some client bugs : some of them fail an upgrade
5841 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5842 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5843 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5844 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5845 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5846 unsigned int want_flags = 0;
5847
5848 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5849 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5850 /* we want a keep-alive response here. Keep-alive header
5851 * required if either side is not 1.1.
5852 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5853 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5854 want_flags |= TX_CON_KAL_SET;
5855 }
5856 else {
5857 /* we want a close response here. Close header required if
5858 * the server is 1.1, regardless of the client.
5859 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5860 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5861 want_flags |= TX_CON_CLO_SET;
5862 }
5863
5864 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5865 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5866 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5867
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5868 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5869 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5870 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5871 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5872
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5873 /*************************************************************
5874 * OK, that's finished for the headers. We have done what we *
5875 * could. Let's switch to the DATA state. *
5876 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5877
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5878 /* if the user wants to log as soon as possible, without counting
5879 * bytes from the server, then this is the right moment. We have
5880 * to temporarily assign bytes_out to log what we currently have.
5881 */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]5882 if (!LIST_ISEMPTY(&t->fe->logformat) && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5883 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5884 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5885 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5886 t->logs.bytes_out = 0;
5887 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5888
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5889 /* Note: we must not try to cheat by jumping directly to DATA,
5890 * otherwise we would not let the client side wake up.
5891 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5892
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5893 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5894 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5895 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5896}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5897
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5898/* This function is an analyser which forwards response body (including chunk
5899 * sizes if any). It is called as soon as we must forward, even if we forward
5900 * zero byte. The only situation where it must not be called is when we're in
5901 * tunnel mode and we want to forward till the close. It's used both to forward
5902 * remaining data and to resync after end of body. It expects the msg_state to
5903 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5904 * 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]5905 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5906 * bytes of pending data + the headers if not already done (between sol and sov).
5907 * 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]5908 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5909int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5910{
5911 struct http_txn *txn = &s->txn;
5912 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5913 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5914 static struct buffer *tmpbuf = NULL;
5915 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5916 int consumed_data = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5917 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5918
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5919 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5920 return 0;
5921
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5922 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]5923 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5924 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5925 /* Output closed while we were sending data. We must abort and
5926 * wake the other side up.
5927 */
5928 msg->msg_state = HTTP_MSG_ERROR;
5929 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5930 return 1;
5931 }
5932
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5933 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5934 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5935
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5936 /* this is the first time we need the compression buffer */
5937 if (s->comp_algo != NULL && tmpbuf == NULL) {
5938 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5939 goto aborted_xfer; /* no memory */
5940 }
5941
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5942 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5943 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5944 * rep->buf.p still points to the beginning of the message and msg->sol
5945 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5946 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5947 channel_forward(res, msg->sov);
5948 msg->next = 0;
5949 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5950
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5951 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5952 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5953 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5954 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5955 }
5956
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5957 if (s->comp_algo != NULL) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5958 ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5959 if (ret < 0)
5960 goto missing_data; /* not enough spaces in buffers */
5961 compressing = 1;
5962 }
5963
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5964 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5965 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5966 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5967 if (s->comp_algo == NULL) {
5968 bytes = msg->sov - msg->sol;
5969 if (msg->chunk_len || bytes) {
5970 msg->sol = msg->sov;
5971 msg->next -= bytes; /* will be forwarded */
5972 msg->chunk_len += bytes;
5973 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5974 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5975 }
5976
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5977 switch (msg->msg_state - HTTP_MSG_DATA) {
5978 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5979 if (compressing) {
5980 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
5981 if (ret < 0)
5982 goto aborted_xfer;
5983 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5984
5985 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5986 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5987
5988 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5989 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5990 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5991 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5992 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5993 if (compressing && consumed_data) {
5994 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5995 compressing = 0;
5996 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5997 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5998 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5999 /* fall through for HTTP_MSG_CHUNK_CRLF */
6000
6001 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6002 /* we want the CRLF after the data */
6003
6004 ret = http_skip_chunk_crlf(msg);
6005 if (ret == 0)
6006 goto missing_data;
6007 else if (ret < 0) {
6008 if (msg->err_pos >= 0)
6009 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
6010 goto return_bad_res;
6011 }
6012 /* skipping data in buffer for compression */
6013 if (compressing) {
6014 b_adv(res->buf, msg->next);
6015 msg->next = 0;
6016 msg->sov = 0;
6017 msg->sol = 0;
6018 }
6019 /* we're in MSG_CHUNK_SIZE now, fall through */
6020
6021 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6022 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6023 * set ->sov and ->next to point to the body and switch to DATA or
6024 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6025 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6026
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6027 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6028 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6029 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6030 else if (ret < 0) {
6031 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6032 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]6033 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6034 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6035 if (compressing) {
6036 if (likely(msg->chunk_len > 0)) {
6037 /* skipping data if we are in compression mode */
6038 b_adv(res->buf, msg->next);
6039 msg->next = 0;
6040 msg->sov = 0;
6041 msg->sol = 0;
6042 } else {
6043 if (consumed_data) {
6044 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6045 compressing = 0;
6046 }
6047 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6048 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6049 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6050 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6051
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6052 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
6053 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6054 if (ret == 0)
6055 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6056 else if (ret < 0) {
6057 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6058 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]6059 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6060 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]6061 if (s->comp_algo != NULL) {
6062 /* forwarding trailers */
6063 channel_forward(res, msg->next);
6064 msg->next = 0;
6065 }
Willy Tarreau2d43e182013-04-03 00:22:25 +0200[diff] [blame]6066 /* we're in HTTP_MSG_DONE now, but we might still have
6067 * some data pending, so let's loop over once.
6068 */
6069 break;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6070
6071 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6072 /* other states, DONE...TUNNEL */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6073
6074 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6075 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6076 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6077 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6078 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6079 if (http_resync_states(s)) {
6080 http_silent_debug(__LINE__, s);
6081 /* some state changes occurred, maybe the analyser
6082 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6083 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6084 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6085 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6086 /* response errors are most likely due to
6087 * the client aborting the transfer.
6088 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6089 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6090 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6091 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6092 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6093 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6094 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6095 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6096 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6097 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6098 }
6099 }
6100
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6101 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6102 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6103 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
6104 compressing = 0;
6105 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6106
6107 if (res->flags & CF_SHUTW)
6108 goto aborted_xfer;
6109
6110 /* stop waiting for data if the input is closed before the end. If the
6111 * client side was already closed, it means that the client has aborted,
6112 * so we don't want to count this as a server abort. Otherwise it's a
6113 * server abort.
6114 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6115 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6116 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
6117 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6118 if (!(s->flags & SN_ERR_MASK))
6119 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6120 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6121 if (objt_server(s->target))
6122 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6123 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6124 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6125
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6126 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6127 if (!s->req->analysers)
6128 goto return_bad_res;
6129
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]6130 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6131 if (s->comp_algo == NULL) {
6132 bytes = msg->sov - msg->sol;
6133 if (msg->chunk_len || bytes) {
6134 msg->sol = msg->sov;
6135 msg->next -= bytes; /* will be forwarded */
6136 msg->chunk_len += bytes;
6137 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6138 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6139 }
6140
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6141 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6142 * 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]6143 * Similarly, with keep-alive on the client side, we don't want to forward a
6144 * close.
6145 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6146 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6147 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6148 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6149 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6150
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6151 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6152 * 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]6153 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6154 * modes are already handled by the stream sock layer. We must not do
6155 * this in content-length mode because it could present the MSG_MORE
6156 * flag with the last block of forwarded data, which would cause an
6157 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6158 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6159 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6160 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6161
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6162 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6163 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6164 return 0;
6165
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6166 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6167 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6168 if (objt_server(s->target))
6169 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6170
6171 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6172 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6173 /* don't send any error message as we're in the body */
6174 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6175 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6176 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]6177 if (objt_server(s->target))
6178 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6179
6180 if (!(s->flags & SN_ERR_MASK))
6181 s->flags |= SN_ERR_PRXCOND;
6182 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6183 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6184 return 0;
6185
6186 aborted_xfer:
6187 txn->rsp.msg_state = HTTP_MSG_ERROR;
6188 /* don't send any error message as we're in the body */
6189 stream_int_retnclose(res->cons, NULL);
6190 res->analysers = 0;
6191 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6192
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6193 s->fe->fe_counters.cli_aborts++;
6194 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6195 if (objt_server(s->target))
6196 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6197
6198 if (!(s->flags & SN_ERR_MASK))
6199 s->flags |= SN_ERR_CLICL;
6200 if (!(s->flags & SN_FINST_MASK))
6201 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6202 return 0;
6203}
6204
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6205/* Iterate the same filter through all request headers.
6206 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6207 * Since it can manage the switch to another backend, it updates the per-proxy
6208 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6209 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6210int 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]6211{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6212 char term;
6213 char *cur_ptr, *cur_end, *cur_next;
6214 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6215 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6216 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6217 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6218
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6219 last_hdr = 0;
6220
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6221 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6222 old_idx = 0;
6223
6224 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6225 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6226 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6227 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6228 (exp->action == ACT_ALLOW ||
6229 exp->action == ACT_DENY ||
6230 exp->action == ACT_TARPIT))
6231 return 0;
6232
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6233 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6234 if (!cur_idx)
6235 break;
6236
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6237 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6238 cur_ptr = cur_next;
6239 cur_end = cur_ptr + cur_hdr->len;
6240 cur_next = cur_end + cur_hdr->cr + 1;
6241
6242 /* Now we have one header between cur_ptr and cur_end,
6243 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6244 */
6245
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6246 /* The annoying part is that pattern matching needs
6247 * that we modify the contents to null-terminate all
6248 * strings before testing them.
6249 */
6250
6251 term = *cur_end;
6252 *cur_end = '\0';
6253
6254 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6255 switch (exp->action) {
6256 case ACT_SETBE:
6257 /* It is not possible to jump a second time.
6258 * FIXME: should we return an HTTP/500 here so that
6259 * the admin knows there's a problem ?
6260 */
6261 if (t->be != t->fe)
6262 break;
6263
6264 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6265 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6266 last_hdr = 1;
6267 break;
6268
6269 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6270 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6271 last_hdr = 1;
6272 break;
6273
6274 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6275 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6276 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6277 break;
6278
6279 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6280 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6281 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6282 break;
6283
6284 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6285 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6286 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6287 /* FIXME: if the user adds a newline in the replacement, the
6288 * index will not be recalculated for now, and the new line
6289 * will not be counted as a new header.
6290 */
6291
6292 cur_end += delta;
6293 cur_next += delta;
6294 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6295 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6296 break;
6297
6298 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6299 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6300 cur_next += delta;
6301
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6302 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6303 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6304 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6305 cur_hdr->len = 0;
6306 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6307 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6308 break;
6309
6310 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6311 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6312 if (cur_end)
6313 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6314
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6315 /* keep the link from this header to next one in case of later
6316 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6317 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6318 old_idx = cur_idx;
6319 }
6320 return 0;
6321}
6322
6323
6324/* Apply the filter to the request line.
6325 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6326 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6327 * Since it can manage the switch to another backend, it updates the per-proxy
6328 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6329 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6330int 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]6331{
6332 char term;
6333 char *cur_ptr, *cur_end;
6334 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6335 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6336 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6337
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6338 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6339 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6340 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6341 (exp->action == ACT_ALLOW ||
6342 exp->action == ACT_DENY ||
6343 exp->action == ACT_TARPIT))
6344 return 0;
6345 else if (exp->action == ACT_REMOVE)
6346 return 0;
6347
6348 done = 0;
6349
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6350 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6351 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6352
6353 /* Now we have the request line between cur_ptr and cur_end */
6354
6355 /* The annoying part is that pattern matching needs
6356 * that we modify the contents to null-terminate all
6357 * strings before testing them.
6358 */
6359
6360 term = *cur_end;
6361 *cur_end = '\0';
6362
6363 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6364 switch (exp->action) {
6365 case ACT_SETBE:
6366 /* It is not possible to jump a second time.
6367 * FIXME: should we return an HTTP/500 here so that
6368 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6369 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6370 if (t->be != t->fe)
6371 break;
6372
6373 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6374 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6375 done = 1;
6376 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6377
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6378 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6379 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6380 done = 1;
6381 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6382
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6383 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6384 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6385 done = 1;
6386 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6387
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6388 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6389 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6390 done = 1;
6391 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6392
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6393 case ACT_REPLACE:
6394 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6395 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6396 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6397 /* FIXME: if the user adds a newline in the replacement, the
6398 * index will not be recalculated for now, and the new line
6399 * will not be counted as a new header.
6400 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6401
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6402 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6403 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6404 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6405 HTTP_MSG_RQMETH,
6406 cur_ptr, cur_end + 1,
6407 NULL, NULL);
6408 if (unlikely(!cur_end))
6409 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6410
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6411 /* we have a full request and we know that we have either a CR
6412 * or an LF at <ptr>.
6413 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6414 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6415 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]6416 /* there is no point trying this regex on headers */
6417 return 1;
6418 }
6419 }
6420 *cur_end = term; /* restore the string terminator */
6421 return done;
6422}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6423
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6424
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6425
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6426/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6427 * 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]6428 * 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]6429 * unparsable request. Since it can manage the switch to another backend, it
6430 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6431 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6432int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6433{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6434 struct http_txn *txn = &s->txn;
6435 struct hdr_exp *exp;
6436
6437 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6438 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6439
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6440 /*
6441 * The interleaving of transformations and verdicts
6442 * makes it difficult to decide to continue or stop
6443 * the evaluation.
6444 */
6445
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6446 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6447 break;
6448
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6449 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6450 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6451 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6452 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6453
6454 /* if this filter had a condition, evaluate it now and skip to
6455 * next filter if the condition does not match.
6456 */
6457 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6458 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]6459 ret = acl_pass(ret);
6460 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6461 ret = !ret;
6462
6463 if (!ret)
6464 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6465 }
6466
6467 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6468 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6469 if (unlikely(ret < 0))
6470 return -1;
6471
6472 if (likely(ret == 0)) {
6473 /* The filter did not match the request, it can be
6474 * iterated through all headers.
6475 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6476 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6477 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6478 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6479 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6480}
6481
6482
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6483
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6484/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6485 * Try to retrieve the server associated to the appsession.
6486 * If the server is found, it's assigned to the session.
6487 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6488void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6489 struct http_txn *txn = &t->txn;
6490 appsess *asession = NULL;
6491 char *sessid_temp = NULL;
6492
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6493 if (len > t->be->appsession_len) {
6494 len = t->be->appsession_len;
6495 }
6496
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6497 if (t->be->options2 & PR_O2_AS_REQL) {
6498 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6499 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6500 /* 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]6501 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6502 }
6503
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6504 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6505 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6506 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6507 return;
6508 }
6509
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6510 memcpy(txn->sessid, buf, len);
6511 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6512 }
6513
6514 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6515 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6516 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6517 return;
6518 }
6519
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6520 memcpy(sessid_temp, buf, len);
6521 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6522
6523 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6524 /* free previously allocated memory */
6525 pool_free2(apools.sessid, sessid_temp);
6526
6527 if (asession != NULL) {
6528 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6529 if (!(t->be->options2 & PR_O2_AS_REQL))
6530 asession->request_count++;
6531
6532 if (asession->serverid != NULL) {
6533 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6534
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6535 while (srv) {
6536 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6537 if ((srv->state & SRV_RUNNING) ||
6538 (t->be->options & PR_O_PERSIST) ||
6539 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6540 /* we found the server and it's usable */
6541 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6542 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6543 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6544 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6545
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6546 break;
6547 } else {
6548 txn->flags &= ~TX_CK_MASK;
6549 txn->flags |= TX_CK_DOWN;
6550 }
6551 }
6552 srv = srv->next;
6553 }
6554 }
6555 }
6556}
6557
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6558/* Find the end of a cookie value contained between <s> and <e>. It works the
6559 * same way as with headers above except that the semi-colon also ends a token.
6560 * See RFC2965 for more information. Note that it requires a valid header to
6561 * return a valid result.
6562 */
6563char *find_cookie_value_end(char *s, const char *e)
6564{
6565 int quoted, qdpair;
6566
6567 quoted = qdpair = 0;
6568 for (; s < e; s++) {
6569 if (qdpair) qdpair = 0;
6570 else if (quoted) {
6571 if (*s == '\\') qdpair = 1;
6572 else if (*s == '"') quoted = 0;
6573 }
6574 else if (*s == '"') quoted = 1;
6575 else if (*s == ',' || *s == ';') return s;
6576 }
6577 return s;
6578}
6579
6580/* Delete a value in a header between delimiters <from> and <next> in buffer
6581 * <buf>. The number of characters displaced is returned, and the pointer to
6582 * the first delimiter is updated if required. The function tries as much as
6583 * possible to respect the following principles :
6584 * - replace <from> delimiter by the <next> one unless <from> points to a
6585 * colon, in which case <next> is simply removed
6586 * - set exactly one space character after the new first delimiter, unless
6587 * there are not enough characters in the block being moved to do so.
6588 * - remove unneeded spaces before the previous delimiter and after the new
6589 * one.
6590 *
6591 * It is the caller's responsibility to ensure that :
6592 * - <from> points to a valid delimiter or the colon ;
6593 * - <next> points to a valid delimiter or the final CR/LF ;
6594 * - there are non-space chars before <from> ;
6595 * - there is a CR/LF at or after <next>.
6596 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6597int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6598{
6599 char *prev = *from;
6600
6601 if (*prev == ':') {
6602 /* We're removing the first value, preserve the colon and add a
6603 * space if possible.
6604 */
6605 if (!http_is_crlf[(unsigned char)*next])
6606 next++;
6607 prev++;
6608 if (prev < next)
6609 *prev++ = ' ';
6610
6611 while (http_is_spht[(unsigned char)*next])
6612 next++;
6613 } else {
6614 /* Remove useless spaces before the old delimiter. */
6615 while (http_is_spht[(unsigned char)*(prev-1)])
6616 prev--;
6617 *from = prev;
6618
6619 /* copy the delimiter and if possible a space if we're
6620 * not at the end of the line.
6621 */
6622 if (!http_is_crlf[(unsigned char)*next]) {
6623 *prev++ = *next++;
6624 if (prev + 1 < next)
6625 *prev++ = ' ';
6626 while (http_is_spht[(unsigned char)*next])
6627 next++;
6628 }
6629 }
6630 return buffer_replace2(buf, prev, next, NULL, 0);
6631}
6632
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6633/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6634 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6635 * desirable to call it only when needed. This code is quite complex because
6636 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6637 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6638 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6639void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6640{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6641 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6642 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6643 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6644 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6645 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6646
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6647 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6648 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6649 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6650
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6651 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6652 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6653 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6654
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6655 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6656 hdr_beg = hdr_next;
6657 hdr_end = hdr_beg + cur_hdr->len;
6658 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6659
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6660 /* We have one full header between hdr_beg and hdr_end, and the
6661 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6662 * "Cookie:" headers.
6663 */
6664
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6665 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6666 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6667 old_idx = cur_idx;
6668 continue;
6669 }
6670
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6671 del_from = NULL; /* nothing to be deleted */
6672 preserve_hdr = 0; /* assume we may kill the whole header */
6673
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6674 /* Now look for cookies. Conforming to RFC2109, we have to support
6675 * attributes whose name begin with a '$', and associate them with
6676 * the right cookie, if we want to delete this cookie.
6677 * So there are 3 cases for each cookie read :
6678 * 1) it's a special attribute, beginning with a '$' : ignore it.
6679 * 2) it's a server id cookie that we *MAY* want to delete : save
6680 * some pointers on it (last semi-colon, beginning of cookie...)
6681 * 3) it's an application cookie : we *MAY* have to delete a previous
6682 * "special" cookie.
6683 * At the end of loop, if a "special" cookie remains, we may have to
6684 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6685 * *MUST* delete it.
6686 *
6687 * Note: RFC2965 is unclear about the processing of spaces around
6688 * the equal sign in the ATTR=VALUE form. A careful inspection of
6689 * the RFC explicitly allows spaces before it, and not within the
6690 * tokens (attrs or values). An inspection of RFC2109 allows that
6691 * too but section 10.1.3 lets one think that spaces may be allowed
6692 * after the equal sign too, resulting in some (rare) buggy
6693 * implementations trying to do that. So let's do what servers do.
6694 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6695 * allowed quoted strings in values, with any possible character
6696 * after a backslash, including control chars and delimitors, which
6697 * causes parsing to become ambiguous. Browsers also allow spaces
6698 * within values even without quotes.
6699 *
6700 * We have to keep multiple pointers in order to support cookie
6701 * removal at the beginning, middle or end of header without
6702 * corrupting the header. All of these headers are valid :
6703 *
6704 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6705 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6706 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6707 * | | | | | | | | |
6708 * | | | | | | | | hdr_end <--+
6709 * | | | | | | | +--> next
6710 * | | | | | | +----> val_end
6711 * | | | | | +-----------> val_beg
6712 * | | | | +--------------> equal
6713 * | | | +----------------> att_end
6714 * | | +---------------------> att_beg
6715 * | +--------------------------> prev
6716 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6717 */
6718
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6719 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6720 /* Iterate through all cookies on this line */
6721
6722 /* find att_beg */
6723 att_beg = prev + 1;
6724 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6725 att_beg++;
6726
6727 /* find att_end : this is the first character after the last non
6728 * space before the equal. It may be equal to hdr_end.
6729 */
6730 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6731
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6732 while (equal < hdr_end) {
6733 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6734 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6735 if (http_is_spht[(unsigned char)*equal++])
6736 continue;
6737 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6738 }
6739
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6740 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6741 * is between <att_beg> and <equal>, both may be identical.
6742 */
6743
6744 /* look for end of cookie if there is an equal sign */
6745 if (equal < hdr_end && *equal == '=') {
6746 /* look for the beginning of the value */
6747 val_beg = equal + 1;
6748 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6749 val_beg++;
6750
6751 /* find the end of the value, respecting quotes */
6752 next = find_cookie_value_end(val_beg, hdr_end);
6753
6754 /* make val_end point to the first white space or delimitor after the value */
6755 val_end = next;
6756 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6757 val_end--;
6758 } else {
6759 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6760 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6761
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6762 /* We have nothing to do with attributes beginning with '$'. However,
6763 * they will automatically be removed if a header before them is removed,
6764 * since they're supposed to be linked together.
6765 */
6766 if (*att_beg == '$')
6767 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6768
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6769 /* Ignore cookies with no equal sign */
6770 if (equal == next) {
6771 /* This is not our cookie, so we must preserve it. But if we already
6772 * scheduled another cookie for removal, we cannot remove the
6773 * complete header, but we can remove the previous block itself.
6774 */
6775 preserve_hdr = 1;
6776 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6777 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6778 val_end += delta;
6779 next += delta;
6780 hdr_end += delta;
6781 hdr_next += delta;
6782 cur_hdr->len += delta;
6783 http_msg_move_end(&txn->req, delta);
6784 prev = del_from;
6785 del_from = NULL;
6786 }
6787 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6788 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6789
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6790 /* if there are spaces around the equal sign, we need to
6791 * strip them otherwise we'll get trouble for cookie captures,
6792 * or even for rewrites. Since this happens extremely rarely,
6793 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6794 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6795 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6796 int stripped_before = 0;
6797 int stripped_after = 0;
6798
6799 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6800 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6801 equal += stripped_before;
6802 val_beg += stripped_before;
6803 }
6804
6805 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6806 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6807 val_beg += stripped_after;
6808 stripped_before += stripped_after;
6809 }
6810
6811 val_end += stripped_before;
6812 next += stripped_before;
6813 hdr_end += stripped_before;
6814 hdr_next += stripped_before;
6815 cur_hdr->len += stripped_before;
6816 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6817 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6818 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6819
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6820 /* First, let's see if we want to capture this cookie. We check
6821 * that we don't already have a client side cookie, because we
6822 * can only capture one. Also as an optimisation, we ignore
6823 * cookies shorter than the declared name.
6824 */
6825 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6826 (val_end - att_beg >= t->fe->capture_namelen) &&
6827 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6828 int log_len = val_end - att_beg;
6829
6830 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6831 Alert("HTTP logging : out of memory.\n");
6832 } else {
6833 if (log_len > t->fe->capture_len)
6834 log_len = t->fe->capture_len;
6835 memcpy(txn->cli_cookie, att_beg, log_len);
6836 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6837 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6838 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6839
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6840 /* Persistence cookies in passive, rewrite or insert mode have the
6841 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6842 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6843 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6844 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6845 * For cookies in prefix mode, the form is :
6846 *
6847 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6848 */
6849 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6850 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6851 struct server *srv = t->be->srv;
6852 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6853
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6854 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6855 * have the server ID between val_beg and delim, and the original cookie between
6856 * delim+1 and val_end. Otherwise, delim==val_end :
6857 *
6858 * Cookie: NAME=SRV; # in all but prefix modes
6859 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6860 * | || || | |+-> next
6861 * | || || | +--> val_end
6862 * | || || +---------> delim
6863 * | || |+------------> val_beg
6864 * | || +-------------> att_end = equal
6865 * | |+-----------------> att_beg
6866 * | +------------------> prev
6867 * +-------------------------> hdr_beg
6868 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6869
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6870 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6871 for (delim = val_beg; delim < val_end; delim++)
6872 if (*delim == COOKIE_DELIM)
6873 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6874 } else {
6875 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6876 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6877 /* Now check if the cookie contains a date field, which would
6878 * appear after a vertical bar ('|') just after the server name
6879 * and before the delimiter.
6880 */
6881 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6882 if (vbar1) {
6883 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6884 * right is the last seen date. It is a base64 encoded
6885 * 30-bit value representing the UNIX date since the
6886 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6887 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6888 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6889 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6890 if (val_end - vbar1 >= 5) {
6891 val = b64tos30(vbar1);
6892 if (val > 0)
6893 txn->cookie_last_date = val << 2;
6894 }
6895 /* look for a second vertical bar */
6896 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6897 if (vbar1 && (val_end - vbar1 > 5)) {
6898 val = b64tos30(vbar1 + 1);
6899 if (val > 0)
6900 txn->cookie_first_date = val << 2;
6901 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6902 }
6903 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6904
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6905 /* if the cookie has an expiration date and the proxy wants to check
6906 * it, then we do that now. We first check if the cookie is too old,
6907 * then only if it has expired. We detect strict overflow because the
6908 * time resolution here is not great (4 seconds). Cookies with dates
6909 * in the future are ignored if their offset is beyond one day. This
6910 * allows an admin to fix timezone issues without expiring everyone
6911 * and at the same time avoids keeping unwanted side effects for too
6912 * long.
6913 */
6914 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6915 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6916 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6917 txn->flags &= ~TX_CK_MASK;
6918 txn->flags |= TX_CK_OLD;
6919 delim = val_beg; // let's pretend we have not found the cookie
6920 txn->cookie_first_date = 0;
6921 txn->cookie_last_date = 0;
6922 }
6923 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6924 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6925 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6926 txn->flags &= ~TX_CK_MASK;
6927 txn->flags |= TX_CK_EXPIRED;
6928 delim = val_beg; // let's pretend we have not found the cookie
6929 txn->cookie_first_date = 0;
6930 txn->cookie_last_date = 0;
6931 }
6932
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6933 /* Here, we'll look for the first running server which supports the cookie.
6934 * This allows to share a same cookie between several servers, for example
6935 * to dedicate backup servers to specific servers only.
6936 * However, to prevent clients from sticking to cookie-less backup server
6937 * when they have incidentely learned an empty cookie, we simply ignore
6938 * empty cookies and mark them as invalid.
6939 * The same behaviour is applied when persistence must be ignored.
6940 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6941 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6942 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6943
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6944 while (srv) {
6945 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6946 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6947 if ((srv->state & SRV_RUNNING) ||
6948 (t->be->options & PR_O_PERSIST) ||
6949 (t->flags & SN_FORCE_PRST)) {
6950 /* we found the server and we can use it */
6951 txn->flags &= ~TX_CK_MASK;
6952 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6953 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6954 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6955 break;
6956 } else {
6957 /* we found a server, but it's down,
6958 * mark it as such and go on in case
6959 * another one is available.
6960 */
6961 txn->flags &= ~TX_CK_MASK;
6962 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6963 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6964 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6965 srv = srv->next;
6966 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6967
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6968 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6969 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6970 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6971 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6972 txn->flags |= TX_CK_UNUSED;
6973 else
6974 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6975 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6976
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6977 /* depending on the cookie mode, we may have to either :
6978 * - delete the complete cookie if we're in insert+indirect mode, so that
6979 * the server never sees it ;
6980 * - remove the server id from the cookie value, and tag the cookie as an
6981 * application cookie so that it does not get accidentely removed later,
6982 * if we're in cookie prefix mode
6983 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6984 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6985 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6986
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6987 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6988 val_end += delta;
6989 next += delta;
6990 hdr_end += delta;
6991 hdr_next += delta;
6992 cur_hdr->len += delta;
6993 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6994
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6995 del_from = NULL;
6996 preserve_hdr = 1; /* we want to keep this cookie */
6997 }
6998 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6999 (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]7000 del_from = prev;
7001 }
7002 } else {
7003 /* This is not our cookie, so we must preserve it. But if we already
7004 * scheduled another cookie for removal, we cannot remove the
7005 * complete header, but we can remove the previous block itself.
7006 */
7007 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7008
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7009 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7010 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7011 if (att_beg >= del_from)
7012 att_beg += delta;
7013 if (att_end >= del_from)
7014 att_end += delta;
7015 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7016 val_end += delta;
7017 next += delta;
7018 hdr_end += delta;
7019 hdr_next += delta;
7020 cur_hdr->len += delta;
7021 http_msg_move_end(&txn->req, delta);
7022 prev = del_from;
7023 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7024 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7025 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7026
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7027 /* Look for the appsession cookie unless persistence must be ignored */
7028 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
7029 int cmp_len, value_len;
7030 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7031
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7032 if (t->be->options2 & PR_O2_AS_PFX) {
7033 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7034 value_begin = att_beg + t->be->appsession_name_len;
7035 value_len = val_end - att_beg - t->be->appsession_name_len;
7036 } else {
7037 cmp_len = att_end - att_beg;
7038 value_begin = val_beg;
7039 value_len = val_end - val_beg;
7040 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7041
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7042 /* let's see if the cookie is our appcookie */
7043 if (cmp_len == t->be->appsession_name_len &&
7044 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
7045 manage_client_side_appsession(t, value_begin, value_len);
7046 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7047 }
7048
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7049 /* continue with next cookie on this header line */
7050 att_beg = next;
7051 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7052
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7053 /* There are no more cookies on this line.
7054 * We may still have one (or several) marked for deletion at the
7055 * end of the line. We must do this now in two ways :
7056 * - if some cookies must be preserved, we only delete from the
7057 * mark to the end of line ;
7058 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7059 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7060 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7061 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7062 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7063 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7064 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7065 cur_hdr->len += delta;
7066 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7067 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7068
7069 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7070 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7071 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7072 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7073 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7074 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7075 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7076 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7077 }
7078
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7079 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7080 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7081 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7082}
7083
7084
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7085/* Iterate the same filter through all response headers contained in <rtr>.
7086 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7087 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7088int 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]7089{
7090 char term;
7091 char *cur_ptr, *cur_end, *cur_next;
7092 int cur_idx, old_idx, last_hdr;
7093 struct http_txn *txn = &t->txn;
7094 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7095 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7096
7097 last_hdr = 0;
7098
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7099 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7100 old_idx = 0;
7101
7102 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7103 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7104 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7105 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7106 (exp->action == ACT_ALLOW ||
7107 exp->action == ACT_DENY))
7108 return 0;
7109
7110 cur_idx = txn->hdr_idx.v[old_idx].next;
7111 if (!cur_idx)
7112 break;
7113
7114 cur_hdr = &txn->hdr_idx.v[cur_idx];
7115 cur_ptr = cur_next;
7116 cur_end = cur_ptr + cur_hdr->len;
7117 cur_next = cur_end + cur_hdr->cr + 1;
7118
7119 /* Now we have one header between cur_ptr and cur_end,
7120 * and the next header starts at cur_next.
7121 */
7122
7123 /* The annoying part is that pattern matching needs
7124 * that we modify the contents to null-terminate all
7125 * strings before testing them.
7126 */
7127
7128 term = *cur_end;
7129 *cur_end = '\0';
7130
7131 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7132 switch (exp->action) {
7133 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7134 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7135 last_hdr = 1;
7136 break;
7137
7138 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7139 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7140 last_hdr = 1;
7141 break;
7142
7143 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7144 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7145 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7146 /* FIXME: if the user adds a newline in the replacement, the
7147 * index will not be recalculated for now, and the new line
7148 * will not be counted as a new header.
7149 */
7150
7151 cur_end += delta;
7152 cur_next += delta;
7153 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7154 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7155 break;
7156
7157 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7158 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7159 cur_next += delta;
7160
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7161 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7162 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7163 txn->hdr_idx.used--;
7164 cur_hdr->len = 0;
7165 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7166 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7167 break;
7168
7169 }
7170 }
7171 if (cur_end)
7172 *cur_end = term; /* restore the string terminator */
7173
7174 /* keep the link from this header to next one in case of later
7175 * removal of next header.
7176 */
7177 old_idx = cur_idx;
7178 }
7179 return 0;
7180}
7181
7182
7183/* Apply the filter to the status line in the response buffer <rtr>.
7184 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7185 * or -1 if a replacement resulted in an invalid status line.
7186 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7187int 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]7188{
7189 char term;
7190 char *cur_ptr, *cur_end;
7191 int done;
7192 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7193 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7194
7195
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7196 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7197 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7198 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7199 (exp->action == ACT_ALLOW ||
7200 exp->action == ACT_DENY))
7201 return 0;
7202 else if (exp->action == ACT_REMOVE)
7203 return 0;
7204
7205 done = 0;
7206
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7207 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7208 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7209
7210 /* Now we have the status line between cur_ptr and cur_end */
7211
7212 /* The annoying part is that pattern matching needs
7213 * that we modify the contents to null-terminate all
7214 * strings before testing them.
7215 */
7216
7217 term = *cur_end;
7218 *cur_end = '\0';
7219
7220 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7221 switch (exp->action) {
7222 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7223 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7224 done = 1;
7225 break;
7226
7227 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7228 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7229 done = 1;
7230 break;
7231
7232 case ACT_REPLACE:
7233 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7234 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7235 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7236 /* FIXME: if the user adds a newline in the replacement, the
7237 * index will not be recalculated for now, and the new line
7238 * will not be counted as a new header.
7239 */
7240
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7241 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7242 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7243 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7244 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7245 cur_ptr, cur_end + 1,
7246 NULL, NULL);
7247 if (unlikely(!cur_end))
7248 return -1;
7249
7250 /* we have a full respnse and we know that we have either a CR
7251 * or an LF at <ptr>.
7252 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7253 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]7254 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]7255 /* there is no point trying this regex on headers */
7256 return 1;
7257 }
7258 }
7259 *cur_end = term; /* restore the string terminator */
7260 return done;
7261}
7262
7263
7264
7265/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7266 * 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]7267 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7268 * unparsable response.
7269 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7270int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7271{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7272 struct http_txn *txn = &s->txn;
7273 struct hdr_exp *exp;
7274
7275 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7276 int ret;
7277
7278 /*
7279 * The interleaving of transformations and verdicts
7280 * makes it difficult to decide to continue or stop
7281 * the evaluation.
7282 */
7283
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7284 if (txn->flags & TX_SVDENY)
7285 break;
7286
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7287 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7288 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7289 exp->action == ACT_PASS)) {
7290 exp = exp->next;
7291 continue;
7292 }
7293
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7294 /* if this filter had a condition, evaluate it now and skip to
7295 * next filter if the condition does not match.
7296 */
7297 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7298 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]7299 ret = acl_pass(ret);
7300 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7301 ret = !ret;
7302 if (!ret)
7303 continue;
7304 }
7305
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7306 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7307 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7308 if (unlikely(ret < 0))
7309 return -1;
7310
7311 if (likely(ret == 0)) {
7312 /* The filter did not match the response, it can be
7313 * iterated through all headers.
7314 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7315 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7316 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7317 }
7318 return 0;
7319}
7320
7321
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7322/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7323 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7324 * desirable to call it only when needed. This function is also used when we
7325 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7326 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7327void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7328{
7329 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7330 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7331 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7332 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7333 char *hdr_beg, *hdr_end, *hdr_next;
7334 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7335
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7336 /* Iterate through the headers.
7337 * we start with the start line.
7338 */
7339 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7340 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7341
7342 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7343 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7344 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7345
7346 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7347 hdr_beg = hdr_next;
7348 hdr_end = hdr_beg + cur_hdr->len;
7349 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7350
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7351 /* We have one full header between hdr_beg and hdr_end, and the
7352 * next header starts at hdr_next. We're only interested in
7353 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7354 */
7355
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7356 is_cookie2 = 0;
7357 prev = hdr_beg + 10;
7358 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7359 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7360 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7361 if (!val) {
7362 old_idx = cur_idx;
7363 continue;
7364 }
7365 is_cookie2 = 1;
7366 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7367 }
7368
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7369 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7370 * <prev> points to the colon.
7371 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7372 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7373
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7374 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7375 * check-cache is enabled) and we are not interested in checking
7376 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7377 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7378 if (t->be->cookie_name == NULL &&
7379 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7380 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7381 return;
7382
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7383 /* OK so now we know we have to process this response cookie.
7384 * The format of the Set-Cookie header is slightly different
7385 * from the format of the Cookie header in that it does not
7386 * support the comma as a cookie delimiter (thus the header
7387 * cannot be folded) because the Expires attribute described in
7388 * the original Netscape's spec may contain an unquoted date
7389 * with a comma inside. We have to live with this because
7390 * many browsers don't support Max-Age and some browsers don't
7391 * support quoted strings. However the Set-Cookie2 header is
7392 * clean.
7393 *
7394 * We have to keep multiple pointers in order to support cookie
7395 * removal at the beginning, middle or end of header without
7396 * corrupting the header (in case of set-cookie2). A special
7397 * pointer, <scav> points to the beginning of the set-cookie-av
7398 * fields after the first semi-colon. The <next> pointer points
7399 * either to the end of line (set-cookie) or next unquoted comma
7400 * (set-cookie2). All of these headers are valid :
7401 *
7402 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7403 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7404 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7405 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7406 * | | | | | | | | | |
7407 * | | | | | | | | +-> next hdr_end <--+
7408 * | | | | | | | +------------> scav
7409 * | | | | | | +--------------> val_end
7410 * | | | | | +--------------------> val_beg
7411 * | | | | +----------------------> equal
7412 * | | | +------------------------> att_end
7413 * | | +----------------------------> att_beg
7414 * | +------------------------------> prev
7415 * +-----------------------------------------> hdr_beg
7416 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7417
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7418 for (; prev < hdr_end; prev = next) {
7419 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7420
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7421 /* find att_beg */
7422 att_beg = prev + 1;
7423 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7424 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7425
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7426 /* find att_end : this is the first character after the last non
7427 * space before the equal. It may be equal to hdr_end.
7428 */
7429 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7430
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7431 while (equal < hdr_end) {
7432 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7433 break;
7434 if (http_is_spht[(unsigned char)*equal++])
7435 continue;
7436 att_end = equal;
7437 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7438
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7439 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7440 * is between <att_beg> and <equal>, both may be identical.
7441 */
7442
7443 /* look for end of cookie if there is an equal sign */
7444 if (equal < hdr_end && *equal == '=') {
7445 /* look for the beginning of the value */
7446 val_beg = equal + 1;
7447 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7448 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7449
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7450 /* find the end of the value, respecting quotes */
7451 next = find_cookie_value_end(val_beg, hdr_end);
7452
7453 /* make val_end point to the first white space or delimitor after the value */
7454 val_end = next;
7455 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7456 val_end--;
7457 } else {
7458 /* <equal> points to next comma, semi-colon or EOL */
7459 val_beg = val_end = next = equal;
7460 }
7461
7462 if (next < hdr_end) {
7463 /* Set-Cookie2 supports multiple cookies, and <next> points to
7464 * a colon or semi-colon before the end. So skip all attr-value
7465 * pairs and look for the next comma. For Set-Cookie, since
7466 * commas are permitted in values, skip to the end.
7467 */
7468 if (is_cookie2)
7469 next = find_hdr_value_end(next, hdr_end);
7470 else
7471 next = hdr_end;
7472 }
7473
7474 /* Now everything is as on the diagram above */
7475
7476 /* Ignore cookies with no equal sign */
7477 if (equal == val_end)
7478 continue;
7479
7480 /* If there are spaces around the equal sign, we need to
7481 * strip them otherwise we'll get trouble for cookie captures,
7482 * or even for rewrites. Since this happens extremely rarely,
7483 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7484 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7485 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7486 int stripped_before = 0;
7487 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7488
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7489 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7490 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7491 equal += stripped_before;
7492 val_beg += stripped_before;
7493 }
7494
7495 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7496 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7497 val_beg += stripped_after;
7498 stripped_before += stripped_after;
7499 }
7500
7501 val_end += stripped_before;
7502 next += stripped_before;
7503 hdr_end += stripped_before;
7504 hdr_next += stripped_before;
7505 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7506 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7507 }
7508
7509 /* First, let's see if we want to capture this cookie. We check
7510 * that we don't already have a server side cookie, because we
7511 * can only capture one. Also as an optimisation, we ignore
7512 * cookies shorter than the declared name.
7513 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7514 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7515 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7516 (val_end - att_beg >= t->fe->capture_namelen) &&
7517 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7518 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7519 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7520 Alert("HTTP logging : out of memory.\n");
7521 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7522 else {
7523 if (log_len > t->fe->capture_len)
7524 log_len = t->fe->capture_len;
7525 memcpy(txn->srv_cookie, att_beg, log_len);
7526 txn->srv_cookie[log_len] = 0;
7527 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7528 }
7529
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7530 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7531 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7532 if (!(t->flags & SN_IGNORE_PRST) &&
7533 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7534 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7535 /* assume passive cookie by default */
7536 txn->flags &= ~TX_SCK_MASK;
7537 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7538
7539 /* If the cookie is in insert mode on a known server, we'll delete
7540 * this occurrence because we'll insert another one later.
7541 * 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]7542 * a direct access.
7543 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7544 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7545 /* The "preserve" flag was set, we don't want to touch the
7546 * server's cookie.
7547 */
7548 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7549 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7550 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7551 /* this cookie must be deleted */
7552 if (*prev == ':' && next == hdr_end) {
7553 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7554 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7555 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7556 txn->hdr_idx.used--;
7557 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7558 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7559 hdr_next += delta;
7560 http_msg_move_end(&txn->rsp, delta);
7561 /* note: while both invalid now, <next> and <hdr_end>
7562 * are still equal, so the for() will stop as expected.
7563 */
7564 } else {
7565 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7566 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7567 next = prev;
7568 hdr_end += delta;
7569 hdr_next += delta;
7570 cur_hdr->len += delta;
7571 http_msg_move_end(&txn->rsp, delta);
7572 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7573 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7574 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7575 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7576 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7577 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7578 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7579 * with this server since we know it.
7580 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7581 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7582 next += delta;
7583 hdr_end += delta;
7584 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7585 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7586 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7587
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7588 txn->flags &= ~TX_SCK_MASK;
7589 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7590 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7591 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7592 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7593 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7594 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7595 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7596 next += delta;
7597 hdr_end += delta;
7598 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7599 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7600 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7601
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7602 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7603 txn->flags &= ~TX_SCK_MASK;
7604 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7605 }
7606 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7607 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7608 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7609 int cmp_len, value_len;
7610 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7611
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7612 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7613 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7614 value_begin = att_beg + t->be->appsession_name_len;
7615 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]7616 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7617 cmp_len = att_end - att_beg;
7618 value_begin = val_beg;
7619 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7620 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7621
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7622 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7623 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7624 /* free a possibly previously allocated memory */
7625 pool_free2(apools.sessid, txn->sessid);
7626
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7627 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7628 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7629 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7630 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7631 return;
7632 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7633 memcpy(txn->sessid, value_begin, value_len);
7634 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7635 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7636 }
7637 /* that's done for this cookie, check the next one on the same
7638 * line when next != hdr_end (only if is_cookie2).
7639 */
7640 }
7641 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7642 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7643 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7644
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7645 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7646 appsess *asession = NULL;
7647 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7648 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7649 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7650 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7651 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7652 Alert("Not enough Memory process_srv():asession:calloc().\n");
7653 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7654 return;
7655 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7656 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7657
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7658 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7659 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7660 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]7661 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7662 return;
7663 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7664 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7665 asession->sessid[t->be->appsession_len] = 0;
7666
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7667 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7668 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7669 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7670 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]7671 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7672 return;
7673 }
7674 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7675 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7676
7677 asession->request_count = 0;
7678 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7679 }
7680
7681 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7682 asession->request_count++;
7683 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7684}
7685
7686
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7687/*
7688 * Check if response is cacheable or not. Updates t->flags.
7689 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7690void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7691{
7692 struct http_txn *txn = &t->txn;
7693 char *p1, *p2;
7694
7695 char *cur_ptr, *cur_end, *cur_next;
7696 int cur_idx;
7697
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7698 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7699 return;
7700
7701 /* Iterate through the headers.
7702 * we start with the start line.
7703 */
7704 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7705 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7706
7707 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7708 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7709 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7710
7711 cur_hdr = &txn->hdr_idx.v[cur_idx];
7712 cur_ptr = cur_next;
7713 cur_end = cur_ptr + cur_hdr->len;
7714 cur_next = cur_end + cur_hdr->cr + 1;
7715
7716 /* We have one full header between cur_ptr and cur_end, and the
7717 * next header starts at cur_next. We're only interested in
7718 * "Cookie:" headers.
7719 */
7720
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7721 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7722 if (val) {
7723 if ((cur_end - (cur_ptr + val) >= 8) &&
7724 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7725 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7726 return;
7727 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7728 }
7729
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7730 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7731 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7732 continue;
7733
7734 /* OK, right now we know we have a cache-control header at cur_ptr */
7735
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7736 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7737
7738 if (p1 >= cur_end) /* no more info */
7739 continue;
7740
7741 /* p1 is at the beginning of the value */
7742 p2 = p1;
7743
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7744 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7745 p2++;
7746
7747 /* we have a complete value between p1 and p2 */
7748 if (p2 < cur_end && *p2 == '=') {
7749 /* we have something of the form no-cache="set-cookie" */
7750 if ((cur_end - p1 >= 21) &&
7751 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7752 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7753 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7754 continue;
7755 }
7756
7757 /* OK, so we know that either p2 points to the end of string or to a comma */
7758 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]7759 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7760 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7761 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7762 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7763 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7764 return;
7765 }
7766
7767 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7768 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7769 continue;
7770 }
7771 }
7772}
7773
7774
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7775/*
7776 * Try to retrieve a known appsession in the URI, then the associated server.
7777 * If the server is found, it's assigned to the session.
7778 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7779void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7780{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7781 char *end_params, *first_param, *cur_param, *next_param;
7782 char separator;
7783 int value_len;
7784
7785 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7786
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7787 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7788 (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]7789 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7790 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7791
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7792 first_param = NULL;
7793 switch (mode) {
7794 case PR_O2_AS_M_PP:
7795 first_param = memchr(begin, ';', len);
7796 break;
7797 case PR_O2_AS_M_QS:
7798 first_param = memchr(begin, '?', len);
7799 break;
7800 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7801
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7802 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7803 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7804 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7805
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7806 switch (mode) {
7807 case PR_O2_AS_M_PP:
7808 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7809 end_params = (char *) begin + len;
7810 }
7811 separator = ';';
7812 break;
7813 case PR_O2_AS_M_QS:
7814 end_params = (char *) begin + len;
7815 separator = '&';
7816 break;
7817 default:
7818 /* unknown mode, shouldn't happen */
7819 return;
7820 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7821
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7822 cur_param = next_param = end_params;
7823 while (cur_param > first_param) {
7824 cur_param--;
7825 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7826 /* let's see if this is the appsession parameter */
7827 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7828 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7829 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7830 /* Cool... it's the right one */
7831 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7832 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7833 if (value_len > 0) {
7834 manage_client_side_appsession(t, cur_param, value_len);
7835 }
7836 break;
7837 }
7838 next_param = cur_param;
7839 }
7840 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7841#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7842 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7843 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7844#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7845}
7846
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7847/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7848 * 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]7849 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7850 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7851 * 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]7852 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7853 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7854 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7855 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7856int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7857{
7858 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7859 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7860 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7861
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7862 if (!uri_auth)
7863 return 0;
7864
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7865 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]7866 return 0;
7867
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7868 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7869 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7870 return 0;
7871
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]7872 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7873 return 0;
7874
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7875 return 1;
7876}
7877
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7878/*
7879 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7880 * By default it tries to report the error position as msg->err_pos. However if
7881 * this one is not set, it will then report msg->next, which is the last known
7882 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7883 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7884 */
7885void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7886 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]7887 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7888{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7889 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7890 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7891
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7892 es->len = MIN(chn->buf->i, sizeof(es->buf));
7893 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7894 len1 = MIN(len1, es->len);
7895 len2 = es->len - len1; /* remaining data if buffer wraps */
7896
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7897 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7898 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7899 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7900
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7901 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7902 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7903 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7904 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7905
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7906 es->when = date; // user-visible date
7907 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7908 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7909 es->oe = other_end;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]7910 if (objt_conn(s->req->prod->end))
7911 es->src = __objt_conn(s->req->prod->end)->addr.from;
7912 else
7913 memset(&es->src, 0, sizeof(es->src));
7914
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7915 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7916 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7917 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7918 es->s_flags = s->flags;
7919 es->t_flags = s->txn.flags;
7920 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7921 es->b_out = chn->buf->o;
7922 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7923 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7924 es->m_clen = msg->chunk_len;
7925 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7926}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7927
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7928/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7929 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7930 * performed over the whole headers. Otherwise it must contain a valid header
7931 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7932 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7933 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7934 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7935 * -1. The value fetch stops at commas, so this function is suited for use with
7936 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7937 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7938 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7939unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7940 struct hdr_idx *idx, int occ,
7941 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7942{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7943 struct hdr_ctx local_ctx;
7944 char *ptr_hist[MAX_HDR_HISTORY];
7945 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7946 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7947 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7948
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7949 if (!ctx) {
7950 local_ctx.idx = 0;
7951 ctx = &local_ctx;
7952 }
7953
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7954 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7955 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7956 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7957 occ--;
7958 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7959 *vptr = ctx->line + ctx->val;
7960 *vlen = ctx->vlen;
7961 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7962 }
7963 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7964 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7965 }
7966
7967 /* negative occurrence, we scan all the list then walk back */
7968 if (-occ > MAX_HDR_HISTORY)
7969 return 0;
7970
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7971 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7972 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7973 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7974 len_hist[hist_ptr] = ctx->vlen;
7975 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7976 hist_ptr = 0;
7977 found++;
7978 }
7979 if (-occ > found)
7980 return 0;
7981 /* 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]7982 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
7983 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
7984 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7985 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]7986 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7987 if (hist_ptr >= MAX_HDR_HISTORY)
7988 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7989 *vptr = ptr_hist[hist_ptr];
7990 *vlen = len_hist[hist_ptr];
7991 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7992}
7993
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7994/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7995 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7996 * performed over the whole headers. Otherwise it must contain a valid header
7997 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7998 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7999 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8000 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8001 * -1. This function differs from http_get_hdr() in that it only returns full
8002 * line header values and does not stop at commas.
8003 * The return value is 0 if nothing was found, or non-zero otherwise.
8004 */
8005unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8006 struct hdr_idx *idx, int occ,
8007 struct hdr_ctx *ctx, char **vptr, int *vlen)
8008{
8009 struct hdr_ctx local_ctx;
8010 char *ptr_hist[MAX_HDR_HISTORY];
8011 int len_hist[MAX_HDR_HISTORY];
8012 unsigned int hist_ptr;
8013 int found;
8014
8015 if (!ctx) {
8016 local_ctx.idx = 0;
8017 ctx = &local_ctx;
8018 }
8019
8020 if (occ >= 0) {
8021 /* search from the beginning */
8022 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8023 occ--;
8024 if (occ <= 0) {
8025 *vptr = ctx->line + ctx->val;
8026 *vlen = ctx->vlen;
8027 return 1;
8028 }
8029 }
8030 return 0;
8031 }
8032
8033 /* negative occurrence, we scan all the list then walk back */
8034 if (-occ > MAX_HDR_HISTORY)
8035 return 0;
8036
8037 found = hist_ptr = 0;
8038 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8039 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8040 len_hist[hist_ptr] = ctx->vlen;
8041 if (++hist_ptr >= MAX_HDR_HISTORY)
8042 hist_ptr = 0;
8043 found++;
8044 }
8045 if (-occ > found)
8046 return 0;
8047 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8048 * find occurrence -occ, so we have to check [hist_ptr+occ].
8049 */
8050 hist_ptr += occ;
8051 if (hist_ptr >= MAX_HDR_HISTORY)
8052 hist_ptr -= MAX_HDR_HISTORY;
8053 *vptr = ptr_hist[hist_ptr];
8054 *vlen = len_hist[hist_ptr];
8055 return 1;
8056}
8057
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8058/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8059 * Print a debug line with a header. Always stop at the first CR or LF char,
8060 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8061 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8062 */
8063void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
8064{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8065 int max;
8066 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8067 dir,
8068 objt_conn(t->req->prod->end) ? (unsigned short)objt_conn(t->req->prod->end)->t.sock.fd : -1,
8069 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]8070
8071 for (max = 0; start + max < end; max++)
8072 if (start[max] == '\r' || start[max] == '\n')
8073 break;
8074
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8075 UBOUND(max, trash.size - trash.len - 3);
8076 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8077 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8078 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8079}
8080
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8081/*
8082 * Initialize a new HTTP transaction for session <s>. It is assumed that all
8083 * the required fields are properly allocated and that we only need to (re)init
8084 * them. This should be used before processing any new request.
8085 */
8086void http_init_txn(struct session *s)
8087{
8088 struct http_txn *txn = &s->txn;
8089 struct proxy *fe = s->fe;
8090
8091 txn->flags = 0;
8092 txn->status = -1;
8093
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8094 txn->cookie_first_date = 0;
8095 txn->cookie_last_date = 0;
8096
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8097 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8098 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8099 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8100 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8101 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8102 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8103 txn->req.chunk_len = 0LL;
8104 txn->req.body_len = 0LL;
8105 txn->rsp.chunk_len = 0LL;
8106 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8107 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8108 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8109 txn->req.chn = s->req;
8110 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8111
8112 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8113
8114 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8115 if (fe->options2 & PR_O2_REQBUG_OK)
8116 txn->req.err_pos = -1; /* let buggy requests pass */
8117
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8118 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8119 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8120
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8121 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8122 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8123
8124 if (txn->hdr_idx.v)
8125 hdr_idx_init(&txn->hdr_idx);
8126}
8127
8128/* to be used at the end of a transaction */
8129void http_end_txn(struct session *s)
8130{
8131 struct http_txn *txn = &s->txn;
8132
8133 /* these ones will have been dynamically allocated */
8134 pool_free2(pool2_requri, txn->uri);
8135 pool_free2(pool2_capture, txn->cli_cookie);
8136 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8137 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8138 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8139
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8140 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8141 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8142 txn->uri = NULL;
8143 txn->srv_cookie = NULL;
8144 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8145
8146 if (txn->req.cap) {
8147 struct cap_hdr *h;
8148 for (h = s->fe->req_cap; h; h = h->next)
8149 pool_free2(h->pool, txn->req.cap[h->index]);
8150 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8151 }
8152
8153 if (txn->rsp.cap) {
8154 struct cap_hdr *h;
8155 for (h = s->fe->rsp_cap; h; h = h->next)
8156 pool_free2(h->pool, txn->rsp.cap[h->index]);
8157 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8158 }
8159
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8160}
8161
8162/* to be used at the end of a transaction to prepare a new one */
8163void http_reset_txn(struct session *s)
8164{
8165 http_end_txn(s);
8166 http_init_txn(s);
8167
8168 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8169 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8170 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8171 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8172 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8173 /* re-init store persistence */
8174 s->store_count = 0;
8175
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8176 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8177
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8178 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8179
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8180 /* We must trim any excess data from the response buffer, because we
8181 * may have blocked an invalid response from a server that we don't
8182 * want to accidentely forward once we disable the analysers, nor do
8183 * we want those data to come along with next response. A typical
8184 * example of such data would be from a buggy server responding to
8185 * a HEAD with some data, or sending more than the advertised
8186 * content-length.
8187 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8188 if (unlikely(s->rep->buf->i))
8189 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8190
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8191 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8192 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8193
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8194 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8195 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8196
8197 s->req->rex = TICK_ETERNITY;
8198 s->req->wex = TICK_ETERNITY;
8199 s->req->analyse_exp = TICK_ETERNITY;
8200 s->rep->rex = TICK_ETERNITY;
8201 s->rep->wex = TICK_ETERNITY;
8202 s->rep->analyse_exp = TICK_ETERNITY;
8203}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8204
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8205void free_http_req_rules(struct list *r) {
8206 struct http_req_rule *tr, *pr;
8207
8208 list_for_each_entry_safe(pr, tr, r, list) {
8209 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8210 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8211 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8212
8213 free(pr);
8214 }
8215}
8216
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8217/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8218struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8219{
8220 struct http_req_rule *rule;
8221 int cur_arg;
8222
8223 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8224 if (!rule) {
8225 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8226 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8227 }
8228
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8229 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8230 rule->action = HTTP_REQ_ACT_ALLOW;
8231 cur_arg = 1;
8232 } else if (!strcmp(args[0], "deny")) {
8233 rule->action = HTTP_REQ_ACT_DENY;
8234 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8235 } else if (!strcmp(args[0], "tarpit")) {
8236 rule->action = HTTP_REQ_ACT_TARPIT;
8237 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8238 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8239 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8240 cur_arg = 1;
8241
8242 while(*args[cur_arg]) {
8243 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8244 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8245 cur_arg+=2;
8246 continue;
8247 } else
8248 break;
8249 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8250 } else if (!strcmp(args[0], "set-nice")) {
8251 rule->action = HTTP_REQ_ACT_SET_NICE;
8252 cur_arg = 1;
8253
8254 if (!*args[cur_arg] ||
8255 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8256 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8257 file, linenum, args[0]);
8258 goto out_err;
8259 }
8260 rule->arg.nice = atoi(args[cur_arg]);
8261 if (rule->arg.nice < -1024)
8262 rule->arg.nice = -1024;
8263 else if (rule->arg.nice > 1024)
8264 rule->arg.nice = 1024;
8265 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8266 } else if (!strcmp(args[0], "set-tos")) {
8267#ifdef IP_TOS
8268 char *err;
8269 rule->action = HTTP_REQ_ACT_SET_TOS;
8270 cur_arg = 1;
8271
8272 if (!*args[cur_arg] ||
8273 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8274 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8275 file, linenum, args[0]);
8276 goto out_err;
8277 }
8278
8279 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8280 if (err && *err != '\0') {
8281 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8282 file, linenum, err, args[0]);
8283 goto out_err;
8284 }
8285 cur_arg++;
8286#else
8287 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8288 goto out_err;
8289#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8290 } else if (!strcmp(args[0], "set-mark")) {
8291#ifdef SO_MARK
8292 char *err;
8293 rule->action = HTTP_REQ_ACT_SET_MARK;
8294 cur_arg = 1;
8295
8296 if (!*args[cur_arg] ||
8297 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8298 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8299 file, linenum, args[0]);
8300 goto out_err;
8301 }
8302
8303 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8304 if (err && *err != '\0') {
8305 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8306 file, linenum, err, args[0]);
8307 goto out_err;
8308 }
8309 cur_arg++;
8310 global.last_checks |= LSTCHK_NETADM;
8311#else
8312 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8313 goto out_err;
8314#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8315 } else if (!strcmp(args[0], "set-log-level")) {
8316 rule->action = HTTP_REQ_ACT_SET_LOGL;
8317 cur_arg = 1;
8318
8319 if (!*args[cur_arg] ||
8320 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8321 bad_log_level:
8322 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8323 file, linenum, args[0]);
8324 goto out_err;
8325 }
8326 if (strcmp(args[cur_arg], "silent") == 0)
8327 rule->arg.loglevel = -1;
8328 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8329 goto bad_log_level;
8330 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8331 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8332 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8333 cur_arg = 1;
8334
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8335 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8336 (*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]8337 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8338 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8339 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8340 }
8341
8342 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8343 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8344 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8345
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8346 proxy->conf.args.ctx = ARGC_HRQ;
Willy Tarreau434c57c2013-01-08 01:10:24 +0100[diff] [blame]8347 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8348 (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]8349 cur_arg += 2;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8350 } else if (strcmp(args[0], "redirect") == 0) {
8351 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]8352 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8353
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8354 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]8355 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8356 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8357 goto out_err;
8358 }
8359
8360 /* this redirect rule might already contain a parsed condition which
8361 * we'll pass to the http-request rule.
8362 */
8363 rule->action = HTTP_REQ_ACT_REDIR;
8364 rule->arg.redir = redir;
8365 rule->cond = redir->cond;
8366 redir->cond = NULL;
8367 cur_arg = 2;
8368 return rule;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8369 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8370 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]8371 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8372 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8373 }
8374
8375 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8376 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8377 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8378
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8379 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8380 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
8381 file, linenum, args[0], errmsg);
8382 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8383 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8384 }
8385 rule->cond = cond;
8386 }
8387 else if (*args[cur_arg]) {
8388 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
8389 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8390 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8391 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8392 }
8393
8394 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8395 out_err:
8396 free(rule);
8397 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8398}
8399
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8400/* parse an "http-respose" rule */
8401struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8402{
8403 struct http_res_rule *rule;
8404 int cur_arg;
8405
8406 rule = calloc(1, sizeof(*rule));
8407 if (!rule) {
8408 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
8409 goto out_err;
8410 }
8411
8412 if (!strcmp(args[0], "allow")) {
8413 rule->action = HTTP_RES_ACT_ALLOW;
8414 cur_arg = 1;
8415 } else if (!strcmp(args[0], "deny")) {
8416 rule->action = HTTP_RES_ACT_DENY;
8417 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8418 } else if (!strcmp(args[0], "set-nice")) {
8419 rule->action = HTTP_RES_ACT_SET_NICE;
8420 cur_arg = 1;
8421
8422 if (!*args[cur_arg] ||
8423 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8424 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
8425 file, linenum, args[0]);
8426 goto out_err;
8427 }
8428 rule->arg.nice = atoi(args[cur_arg]);
8429 if (rule->arg.nice < -1024)
8430 rule->arg.nice = -1024;
8431 else if (rule->arg.nice > 1024)
8432 rule->arg.nice = 1024;
8433 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8434 } else if (!strcmp(args[0], "set-tos")) {
8435#ifdef IP_TOS
8436 char *err;
8437 rule->action = HTTP_RES_ACT_SET_TOS;
8438 cur_arg = 1;
8439
8440 if (!*args[cur_arg] ||
8441 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8442 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8443 file, linenum, args[0]);
8444 goto out_err;
8445 }
8446
8447 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8448 if (err && *err != '\0') {
8449 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8450 file, linenum, err, args[0]);
8451 goto out_err;
8452 }
8453 cur_arg++;
8454#else
8455 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8456 goto out_err;
8457#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8458 } else if (!strcmp(args[0], "set-mark")) {
8459#ifdef SO_MARK
8460 char *err;
8461 rule->action = HTTP_RES_ACT_SET_MARK;
8462 cur_arg = 1;
8463
8464 if (!*args[cur_arg] ||
8465 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8466 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8467 file, linenum, args[0]);
8468 goto out_err;
8469 }
8470
8471 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8472 if (err && *err != '\0') {
8473 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8474 file, linenum, err, args[0]);
8475 goto out_err;
8476 }
8477 cur_arg++;
8478 global.last_checks |= LSTCHK_NETADM;
8479#else
8480 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8481 goto out_err;
8482#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8483 } else if (!strcmp(args[0], "set-log-level")) {
8484 rule->action = HTTP_RES_ACT_SET_LOGL;
8485 cur_arg = 1;
8486
8487 if (!*args[cur_arg] ||
8488 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8489 bad_log_level:
8490 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
8491 file, linenum, args[0]);
8492 goto out_err;
8493 }
8494 if (strcmp(args[cur_arg], "silent") == 0)
8495 rule->arg.loglevel = -1;
8496 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
8497 goto bad_log_level;
8498 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8499 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8500 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
8501 cur_arg = 1;
8502
8503 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8504 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
8505 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
8506 file, linenum, args[0]);
8507 goto out_err;
8508 }
8509
8510 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8511 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8512 LIST_INIT(&rule->arg.hdr_add.fmt);
8513
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8514 proxy->conf.args.ctx = ARGC_HRS;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8515 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8516 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR);
8517 cur_arg += 2;
8518 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8519 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]8520 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
8521 goto out_err;
8522 }
8523
8524 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8525 struct acl_cond *cond;
8526 char *errmsg = NULL;
8527
8528 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8529 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
8530 file, linenum, args[0], errmsg);
8531 free(errmsg);
8532 goto out_err;
8533 }
8534 rule->cond = cond;
8535 }
8536 else if (*args[cur_arg]) {
8537 Alert("parsing [%s:%d]: 'http-response %s' expects"
8538 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8539 file, linenum, args[0], args[cur_arg]);
8540 goto out_err;
8541 }
8542
8543 return rule;
8544 out_err:
8545 free(rule);
8546 return NULL;
8547}
8548
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8549/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8550 * with <err> filled with the error message. If <use_fmt> is not null, builds a
8551 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8552 */
8553struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8554 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8555{
8556 struct redirect_rule *rule;
8557 int cur_arg;
8558 int type = REDIRECT_TYPE_NONE;
8559 int code = 302;
8560 const char *destination = NULL;
8561 const char *cookie = NULL;
8562 int cookie_set = 0;
8563 unsigned int flags = REDIRECT_FLAG_NONE;
8564 struct acl_cond *cond = NULL;
8565
8566 cur_arg = 0;
8567 while (*(args[cur_arg])) {
8568 if (strcmp(args[cur_arg], "location") == 0) {
8569 if (!*args[cur_arg + 1])
8570 goto missing_arg;
8571
8572 type = REDIRECT_TYPE_LOCATION;
8573 cur_arg++;
8574 destination = args[cur_arg];
8575 }
8576 else if (strcmp(args[cur_arg], "prefix") == 0) {
8577 if (!*args[cur_arg + 1])
8578 goto missing_arg;
8579
8580 type = REDIRECT_TYPE_PREFIX;
8581 cur_arg++;
8582 destination = args[cur_arg];
8583 }
8584 else if (strcmp(args[cur_arg], "scheme") == 0) {
8585 if (!*args[cur_arg + 1])
8586 goto missing_arg;
8587
8588 type = REDIRECT_TYPE_SCHEME;
8589 cur_arg++;
8590 destination = args[cur_arg];
8591 }
8592 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
8593 if (!*args[cur_arg + 1])
8594 goto missing_arg;
8595
8596 cur_arg++;
8597 cookie = args[cur_arg];
8598 cookie_set = 1;
8599 }
8600 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
8601 if (!*args[cur_arg + 1])
8602 goto missing_arg;
8603
8604 cur_arg++;
8605 cookie = args[cur_arg];
8606 cookie_set = 0;
8607 }
8608 else if (strcmp(args[cur_arg], "code") == 0) {
8609 if (!*args[cur_arg + 1])
8610 goto missing_arg;
8611
8612 cur_arg++;
8613 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8614 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8615 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8616 "'%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]8617 args[cur_arg - 1], args[cur_arg]);
8618 return NULL;
8619 }
8620 }
8621 else if (!strcmp(args[cur_arg],"drop-query")) {
8622 flags |= REDIRECT_FLAG_DROP_QS;
8623 }
8624 else if (!strcmp(args[cur_arg],"append-slash")) {
8625 flags |= REDIRECT_FLAG_APPEND_SLASH;
8626 }
8627 else if (strcmp(args[cur_arg], "if") == 0 ||
8628 strcmp(args[cur_arg], "unless") == 0) {
8629 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
8630 if (!cond) {
8631 memprintf(errmsg, "error in condition: %s", *errmsg);
8632 return NULL;
8633 }
8634 break;
8635 }
8636 else {
8637 memprintf(errmsg,
8638 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
8639 args[cur_arg]);
8640 return NULL;
8641 }
8642 cur_arg++;
8643 }
8644
8645 if (type == REDIRECT_TYPE_NONE) {
8646 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
8647 return NULL;
8648 }
8649
8650 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
8651 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]8652 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8653
8654 if (!use_fmt) {
8655 /* old-style static redirect rule */
8656 rule->rdr_str = strdup(destination);
8657 rule->rdr_len = strlen(destination);
8658 }
8659 else {
8660 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8661
8662 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
8663 * if prefix == "/", we don't want to add anything, otherwise it
8664 * makes it hard for the user to configure a self-redirection.
8665 */
8666 proxy->conf.args.ctx = ARGC_RDR;
8667 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
8668 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, 0,
8669 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR);
8670 }
8671 }
8672
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8673 if (cookie) {
8674 /* depending on cookie_set, either we want to set the cookie, or to clear it.
8675 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
8676 */
8677 rule->cookie_len = strlen(cookie);
8678 if (cookie_set) {
8679 rule->cookie_str = malloc(rule->cookie_len + 10);
8680 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8681 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
8682 rule->cookie_len += 9;
8683 } else {
8684 rule->cookie_str = malloc(rule->cookie_len + 21);
8685 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8686 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
8687 rule->cookie_len += 20;
8688 }
8689 }
8690 rule->type = type;
8691 rule->code = code;
8692 rule->flags = flags;
8693 LIST_INIT(&rule->list);
8694 return rule;
8695
8696 missing_arg:
8697 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
8698 return NULL;
8699}
8700
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8701/************************************************************************/
8702/* The code below is dedicated to ACL parsing and matching */
8703/************************************************************************/
8704
8705
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8706/* This function ensures that the prerequisites for an L7 fetch are ready,
8707 * which means that a request or response is ready. If some data is missing,
8708 * 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]8709 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
8710 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8711 *
8712 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8713 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
8714 * decide whether or not an HTTP message is present ;
8715 * 0 if the requested data cannot be fetched or if it is certain that
8716 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8717 * 1 if an HTTP message is ready
8718 */
8719static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8720smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8721 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8722{
8723 struct http_txn *txn = l7;
8724 struct http_msg *msg = &txn->req;
8725
8726 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8727 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8728 */
8729
8730 if (unlikely(!s || !txn))
8731 return 0;
8732
8733 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8734 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8735
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8736 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8737 if (unlikely(!s->req))
8738 return 0;
8739
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8740 /* If the buffer does not leave enough free space at the end,
8741 * we must first realign it.
8742 */
8743 if (s->req->buf->p > s->req->buf->data &&
8744 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
8745 buffer_slow_realign(s->req->buf);
8746
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8747 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]8748 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8749 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8750
8751 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8752 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8753 http_msg_analyzer(msg, &txn->hdr_idx);
8754
8755 /* Still no valid request ? */
8756 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8757 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8758 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8759 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8760 }
8761 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8762 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8763 return 0;
8764 }
8765
8766 /* OK we just got a valid HTTP request. We have some minor
8767 * preparation to perform so that further checks can rely
8768 * on HTTP tests.
8769 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8770
8771 /* If the request was parsed but was too large, we must absolutely
8772 * return an error so that it is not processed. At the moment this
8773 * cannot happen, but if the parsers are to change in the future,
8774 * we want this check to be maintained.
8775 */
8776 if (unlikely(s->req->buf->i + s->req->buf->p >
8777 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
8778 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8779 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8780 return 1;
8781 }
8782
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8783 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8784 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
8785 s->flags |= SN_REDIRECTABLE;
8786
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8787 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
8788 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8789 }
8790
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8791 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8792 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8793 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8794
8795 /* otherwise everything's ready for the request */
8796 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8797 else {
8798 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8799 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
8800 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8801 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8802 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8803 }
8804
8805 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8806 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8807 return 1;
8808}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8809
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8810#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8811 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]8812
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8813#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8814 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]8815
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8816
8817/* 1. Check on METHOD
8818 * We use the pre-parsed method if it is known, and store its number as an
8819 * integer. If it is unknown, we use the pointer and the length.
8820 */
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]8821static 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]8822{
8823 int len, meth;
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]8824 struct chunk *trash;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8825
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8826 len = strlen(*text);
8827 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8828
8829 pattern->val.i = meth;
8830 if (meth == HTTP_METH_OTHER) {
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]8831 if (usage == PAT_U_COMPILE) {
8832 pattern->ptr.str = strdup(*text);
8833 if (!pattern->ptr.str) {
8834 memprintf(err, "out of memory while loading pattern");
8835 return 0;
8836 }
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8837 }
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]8838 else {
8839 trash = get_trash_chunk();
8840 if (trash->size < len) {
8841 memprintf(err, "no space avalaible in the buffer. expect %d, provides %d",
8842 len, trash->size);
8843 return 0;
8844 }
8845 pattern->ptr.str = trash->str;
8846 }
8847 pattern->expect_type = SMP_T_CSTR;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8848 pattern->len = len;
8849 }
Thierry FOURNIERcc0e0b32013-12-06 16:56:40 +0100[diff] [blame]8850 else
8851 pattern->expect_type = SMP_T_UINT;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8852 return 1;
8853}
8854
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8855/* This function fetches the method of current HTTP request and stores
8856 * it in the global pattern struct as a chunk. There are two possibilities :
8857 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8858 * in <len> and <ptr> is NULL ;
8859 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8860 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8861 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8862 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8863static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8864smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8865 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8866{
8867 int meth;
8868 struct http_txn *txn = l7;
8869
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8870 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8871
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8872 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8873 smp->type = SMP_T_UINT;
8874 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8875 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8876 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8877 /* ensure the indexes are not affected */
8878 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8879 smp->type = SMP_T_CSTR;
8880 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8881 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8882 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8883 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8884 return 1;
8885}
8886
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8887/* See above how the method is stored in the global pattern */
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]8888static enum pat_match_res pat_match_meth(struct sample *smp, struct pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8889{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8890 int icase;
8891
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8892
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8893 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8894 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8895 if (smp->data.uint == pattern->val.i)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8896 return PAT_MATCH;
8897 return PAT_NOMATCH;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8898 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8899
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8900 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8901 if (pattern->val.i != HTTP_METH_OTHER)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8902 return PAT_NOMATCH;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8903
8904 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8905 if (pattern->len != smp->data.str.len)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8906 return PAT_NOMATCH;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8907
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8908 icase = pattern->flags & PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8909 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8910 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8911 return PAT_NOMATCH;
8912 return PAT_MATCH;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8913}
8914
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8915static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8916smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8917 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8918{
8919 struct http_txn *txn = l7;
8920 char *ptr;
8921 int len;
8922
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8923 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8924
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8925 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8926 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8927
8928 while ((len-- > 0) && (*ptr++ != '/'));
8929 if (len <= 0)
8930 return 0;
8931
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8932 smp->type = SMP_T_CSTR;
8933 smp->data.str.str = ptr;
8934 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8935
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8936 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8937 return 1;
8938}
8939
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8940static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8941smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8942 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8943{
8944 struct http_txn *txn = l7;
8945 char *ptr;
8946 int len;
8947
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8948 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8949
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8950 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8951 return 0;
8952
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8953 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8954 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8955
8956 while ((len-- > 0) && (*ptr++ != '/'));
8957 if (len <= 0)
8958 return 0;
8959
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8960 smp->type = SMP_T_CSTR;
8961 smp->data.str.str = ptr;
8962 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8963
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8964 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8965 return 1;
8966}
8967
8968/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8969static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8970smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8971 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8972{
8973 struct http_txn *txn = l7;
8974 char *ptr;
8975 int len;
8976
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8977 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8978
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8979 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8980 return 0;
8981
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8982 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8983 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8984
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8985 smp->type = SMP_T_UINT;
8986 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8987 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8988 return 1;
8989}
8990
8991/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8992static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8993smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8994 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8995{
8996 struct http_txn *txn = l7;
8997
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8998 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8999
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9000 smp->type = SMP_T_CSTR;
9001 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9002 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9003 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9004 return 1;
9005}
9006
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9007static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9008smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9009 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9010{
9011 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9012 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9013
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9014 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9015
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9016 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr);
9017 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]9018 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9019
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9020 smp->type = SMP_T_IPV4;
9021 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9022 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9023 return 1;
9024}
9025
9026static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9027smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9028 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9029{
9030 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9031 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9032
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9033 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9034
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9035 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr);
9036 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
9037 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9038
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9039 smp->type = SMP_T_UINT;
9040 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]9041 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9042 return 1;
9043}
9044
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9045/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9046 * Accepts an optional argument of type string containing the header field name,
9047 * and an optional argument of type signed or unsigned integer to request an
9048 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9049 * headers are considered from the first one. It does not stop on commas and
9050 * returns full lines instead (useful for User-Agent or Date for example).
9051 */
9052static int
9053smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9054 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9055{
9056 struct http_txn *txn = l7;
9057 struct hdr_idx *idx = &txn->hdr_idx;
9058 struct hdr_ctx *ctx = smp->ctx.a[0];
9059 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9060 int occ = 0;
9061 const char *name_str = NULL;
9062 int name_len = 0;
9063
9064 if (!ctx) {
9065 /* first call */
9066 ctx = &static_hdr_ctx;
9067 ctx->idx = 0;
9068 smp->ctx.a[0] = ctx;
9069 }
9070
9071 if (args) {
9072 if (args[0].type != ARGT_STR)
9073 return 0;
9074 name_str = args[0].data.str.str;
9075 name_len = args[0].data.str.len;
9076
9077 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9078 occ = args[1].data.uint;
9079 }
9080
9081 CHECK_HTTP_MESSAGE_FIRST();
9082
9083 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
9084 /* search for header from the beginning */
9085 ctx->idx = 0;
9086
9087 if (!occ && !(opt & SMP_OPT_ITERATE))
9088 /* no explicit occurrence and single fetch => last header by default */
9089 occ = -1;
9090
9091 if (!occ)
9092 /* prepare to report multiple occurrences for ACL fetches */
9093 smp->flags |= SMP_F_NOT_LAST;
9094
9095 smp->type = SMP_T_CSTR;
9096 smp->flags |= SMP_F_VOL_HDR;
9097 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
9098 return 1;
9099
9100 smp->flags &= ~SMP_F_NOT_LAST;
9101 return 0;
9102}
9103
9104/* 6. Check on HTTP header count. The number of occurrences is returned.
9105 * Accepts exactly 1 argument of type string. It does not stop on commas and
9106 * returns full lines instead (useful for User-Agent or Date for example).
9107 */
9108static int
9109smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9110 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9111{
9112 struct http_txn *txn = l7;
9113 struct hdr_idx *idx = &txn->hdr_idx;
9114 struct hdr_ctx ctx;
9115 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9116 int cnt;
9117
9118 if (!args || args->type != ARGT_STR)
9119 return 0;
9120
9121 CHECK_HTTP_MESSAGE_FIRST();
9122
9123 ctx.idx = 0;
9124 cnt = 0;
9125 while (http_find_full_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
9126 cnt++;
9127
9128 smp->type = SMP_T_UINT;
9129 smp->data.uint = cnt;
9130 smp->flags = SMP_F_VOL_HDR;
9131 return 1;
9132}
9133
9134/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9135 * Accepts an optional argument of type string containing the header field name,
9136 * and an optional argument of type signed or unsigned integer to request an
9137 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9138 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9139 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9140static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9141smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9142 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9143{
9144 struct http_txn *txn = l7;
9145 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9146 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9147 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]9148 int occ = 0;
9149 const char *name_str = NULL;
9150 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9151
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9152 if (!ctx) {
9153 /* first call */
9154 ctx = &static_hdr_ctx;
9155 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]9156 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9157 }
9158
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9159 if (args) {
9160 if (args[0].type != ARGT_STR)
9161 return 0;
9162 name_str = args[0].data.str.str;
9163 name_len = args[0].data.str.len;
9164
9165 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9166 occ = args[1].data.uint;
9167 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9168
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9169 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9170
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9171 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9172 /* search for header from the beginning */
9173 ctx->idx = 0;
9174
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9175 if (!occ && !(opt & SMP_OPT_ITERATE))
9176 /* no explicit occurrence and single fetch => last header by default */
9177 occ = -1;
9178
9179 if (!occ)
9180 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9181 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]9182
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9183 smp->type = SMP_T_CSTR;
9184 smp->flags |= SMP_F_VOL_HDR;
9185 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]9186 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9187
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9188 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9189 return 0;
9190}
9191
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9192/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9193 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9194 */
9195static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9196smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9197 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9198{
9199 struct http_txn *txn = l7;
9200 struct hdr_idx *idx = &txn->hdr_idx;
9201 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9202 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]9203 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9204
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9205 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9206 return 0;
9207
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9208 CHECK_HTTP_MESSAGE_FIRST();
9209
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9210 ctx.idx = 0;
9211 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9212 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]9213 cnt++;
9214
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9215 smp->type = SMP_T_UINT;
9216 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9217 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9218 return 1;
9219}
9220
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9221/* Fetch an HTTP header's integer value. The integer value is returned. It
9222 * takes a mandatory argument of type string and an optional one of type int
9223 * to designate a specific occurrence. It returns an unsigned integer, which
9224 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9225 */
9226static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9227smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9228 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9229{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9230 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9231
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9232 if (ret > 0) {
9233 smp->type = SMP_T_UINT;
9234 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9235 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9236
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9237 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9238}
9239
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9240/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
9241 * and an optional one of type int to designate a specific occurrence.
9242 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9243 */
9244static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9245smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9246 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9247{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9248 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9249
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9250 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9251 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
9252 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9253 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9254 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9255 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9256 if (smp->data.str.len < temp->size - 1) {
9257 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
9258 temp->str[smp->data.str.len] = '\0';
9259 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
9260 smp->type = SMP_T_IPV6;
9261 break;
9262 }
9263 }
9264 }
9265
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9266 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9267 if (!(smp->flags & SMP_F_NOT_LAST))
9268 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9269 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9270 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9271}
9272
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9273/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
9274 * the first '/' after the possible hostname, and ends before the possible '?'.
9275 */
9276static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9277smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9278 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9279{
9280 struct http_txn *txn = l7;
9281 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9282
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9283 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9284
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9285 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]9286 ptr = http_get_path(txn);
9287 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9288 return 0;
9289
9290 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9291 smp->type = SMP_T_CSTR;
9292 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9293
9294 while (ptr < end && *ptr != '?')
9295 ptr++;
9296
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9297 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9298 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9299 return 1;
9300}
9301
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9302/* This produces a concatenation of the first occurrence of the Host header
9303 * followed by the path component if it begins with a slash ('/'). This means
9304 * that '*' will not be added, resulting in exactly the first Host entry.
9305 * If no Host header is found, then the path is returned as-is. The returned
9306 * 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]9307 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9308 */
9309static int
9310smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9311 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9312{
9313 struct http_txn *txn = l7;
9314 char *ptr, *end, *beg;
9315 struct hdr_ctx ctx;
9316
9317 CHECK_HTTP_MESSAGE_FIRST();
9318
9319 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9320 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]9321 !ctx.vlen)
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9322 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9323
9324 /* 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]9325 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9326 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]9327 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9328 smp->data.str.len = ctx.vlen;
9329
9330 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9331 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]9332 beg = http_get_path(txn);
9333 if (!beg)
9334 beg = end;
9335
9336 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9337
9338 if (beg < ptr && *beg == '/') {
9339 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
9340 smp->data.str.len += ptr - beg;
9341 }
9342
9343 smp->flags = SMP_F_VOL_1ST;
9344 return 1;
9345}
9346
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9347/* This produces a 32-bit hash of the concatenation of the first occurrence of
9348 * the Host header followed by the path component if it begins with a slash ('/').
9349 * This means that '*' will not be added, resulting in exactly the first Host
9350 * 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]9351 * is hashed using the path hash followed by a full avalanche hash and provides a
9352 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9353 * high-traffic sites without having to store whole paths.
9354 */
9355static int
9356smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9357 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9358{
9359 struct http_txn *txn = l7;
9360 struct hdr_ctx ctx;
9361 unsigned int hash = 0;
9362 char *ptr, *beg, *end;
9363 int len;
9364
9365 CHECK_HTTP_MESSAGE_FIRST();
9366
9367 ctx.idx = 0;
9368 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
9369 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
9370 ptr = ctx.line + ctx.val;
9371 len = ctx.vlen;
9372 while (len--)
9373 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
9374 }
9375
9376 /* now retrieve the path */
9377 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
9378 beg = http_get_path(txn);
9379 if (!beg)
9380 beg = end;
9381
9382 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9383
9384 if (beg < ptr && *beg == '/') {
9385 while (beg < ptr)
9386 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
9387 }
9388 hash = full_hash(hash);
9389
9390 smp->type = SMP_T_UINT;
9391 smp->data.uint = hash;
9392 smp->flags = SMP_F_VOL_1ST;
9393 return 1;
9394}
9395
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9396/* 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]9397 * path as returned by smp_fetch_base32(). The idea is to have per-source and
9398 * per-path counters. The result is a binary block from 8 to 20 bytes depending
9399 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9400 * that in environments where IPv6 is insignificant, truncating the output to
9401 * 8 bytes would still work.
9402 */
9403static int
9404smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9405 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9406{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9407 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9408 struct connection *cli_conn = objt_conn(l4->si[0].end);
9409
9410 if (!cli_conn)
9411 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9412
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9413 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9414 return 0;
9415
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9416 temp = get_trash_chunk();
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9417 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
9418 temp->len += sizeof(smp->data.uint);
9419
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9420 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9421 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9422 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]9423 temp->len += 4;
9424 break;
9425 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9426 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]9427 temp->len += 16;
9428 break;
9429 default:
9430 return 0;
9431 }
9432
9433 smp->data.str = *temp;
9434 smp->type = SMP_T_BIN;
9435 return 1;
9436}
9437
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9438static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9439smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9440 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9441{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9442 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9443 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9444 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9445
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9446 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9447
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9448 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9449 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9450 return 1;
9451}
9452
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9453/* return a valid test if the current request is the first one on the connection */
9454static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9455smp_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]9456 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9457{
9458 if (!s)
9459 return 0;
9460
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9461 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9462 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9463 return 1;
9464}
9465
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9466/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9467static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9468smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9469 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9470{
9471
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9472 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9473 return 0;
9474
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9475 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9476
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9477 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9478 return 0;
9479
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9480 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9481 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]9482 return 1;
9483}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9484
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9485/* Accepts exactly 1 argument of type userlist */
9486static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9487smp_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]9488 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9489{
9490
9491 if (!args || args->type != ARGT_USR)
9492 return 0;
9493
9494 CHECK_HTTP_MESSAGE_FIRST();
9495
9496 if (!get_http_auth(l4))
9497 return 0;
9498
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9499 /* pat_match_auth() will need several information at once */
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9500 smp->ctx.a[0] = args->data.usr; /* user list */
9501 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
9502 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
9503
9504 /* if the user does not belong to the userlist or has a wrong password,
9505 * report that it unconditionally does not match. Otherwise we return
9506 * a non-zero integer which will be ignored anyway since all the params
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9507 * that pat_match_auth() will use are in test->ctx.a[0,1,2].
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9508 */
9509 smp->type = SMP_T_BOOL;
9510 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
9511 if (smp->data.uint)
9512 smp->type = SMP_T_UINT;
9513
9514 return 1;
9515}
9516
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9517/* Try to find the next occurrence of a cookie name in a cookie header value.
9518 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
9519 * the cookie value is returned into *value and *value_l, and the function
9520 * returns a pointer to the next pointer to search from if the value was found.
9521 * Otherwise if the cookie was not found, NULL is returned and neither value
9522 * nor value_l are touched. The input <hdr> string should first point to the
9523 * header's value, and the <hdr_end> pointer must point to the first character
9524 * not part of the value. <list> must be non-zero if value may represent a list
9525 * of values (cookie headers). This makes it faster to abort parsing when no
9526 * list is expected.
9527 */
9528static char *
9529extract_cookie_value(char *hdr, const char *hdr_end,
9530 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]9531 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9532{
9533 char *equal, *att_end, *att_beg, *val_beg, *val_end;
9534 char *next;
9535
9536 /* we search at least a cookie name followed by an equal, and more
9537 * generally something like this :
9538 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
9539 */
9540 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
9541 /* Iterate through all cookies on this line */
9542
9543 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
9544 att_beg++;
9545
9546 /* find att_end : this is the first character after the last non
9547 * space before the equal. It may be equal to hdr_end.
9548 */
9549 equal = att_end = att_beg;
9550
9551 while (equal < hdr_end) {
9552 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
9553 break;
9554 if (http_is_spht[(unsigned char)*equal++])
9555 continue;
9556 att_end = equal;
9557 }
9558
9559 /* here, <equal> points to '=', a delimitor or the end. <att_end>
9560 * is between <att_beg> and <equal>, both may be identical.
9561 */
9562
9563 /* look for end of cookie if there is an equal sign */
9564 if (equal < hdr_end && *equal == '=') {
9565 /* look for the beginning of the value */
9566 val_beg = equal + 1;
9567 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
9568 val_beg++;
9569
9570 /* find the end of the value, respecting quotes */
9571 next = find_cookie_value_end(val_beg, hdr_end);
9572
9573 /* make val_end point to the first white space or delimitor after the value */
9574 val_end = next;
9575 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
9576 val_end--;
9577 } else {
9578 val_beg = val_end = next = equal;
9579 }
9580
9581 /* We have nothing to do with attributes beginning with '$'. However,
9582 * they will automatically be removed if a header before them is removed,
9583 * since they're supposed to be linked together.
9584 */
9585 if (*att_beg == '$')
9586 continue;
9587
9588 /* Ignore cookies with no equal sign */
9589 if (equal == next)
9590 continue;
9591
9592 /* Now we have the cookie name between att_beg and att_end, and
9593 * its value between val_beg and val_end.
9594 */
9595
9596 if (att_end - att_beg == cookie_name_l &&
9597 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
9598 /* let's return this value and indicate where to go on from */
9599 *value = val_beg;
9600 *value_l = val_end - val_beg;
9601 return next + 1;
9602 }
9603
9604 /* Set-Cookie headers only have the name in the first attr=value part */
9605 if (!list)
9606 break;
9607 }
9608
9609 return NULL;
9610}
9611
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9612/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9613 * 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]9614 * 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]9615 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9616 * 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]9617 * Accepts exactly 1 argument of type string. If the input options indicate
9618 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]9619 * The returned sample is of type CSTR.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9620 */
9621static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9622smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9623 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9624{
9625 struct http_txn *txn = l7;
9626 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9627 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9628 const struct http_msg *msg;
9629 const char *hdr_name;
9630 int hdr_name_len;
9631 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9632 int occ = 0;
9633 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9634
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9635 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9636 return 0;
9637
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9638 if (!ctx) {
9639 /* first call */
9640 ctx = &static_hdr_ctx;
9641 ctx->idx = 0;
9642 smp->ctx.a[2] = ctx;
9643 }
9644
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9645 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9646
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9647 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9648 msg = &txn->req;
9649 hdr_name = "Cookie";
9650 hdr_name_len = 6;
9651 } else {
9652 msg = &txn->rsp;
9653 hdr_name = "Set-Cookie";
9654 hdr_name_len = 10;
9655 }
9656
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9657 if (!occ && !(opt & SMP_OPT_ITERATE))
9658 /* no explicit occurrence and single fetch => last cookie by default */
9659 occ = -1;
9660
9661 /* OK so basically here, either we want only one value and it's the
9662 * last one, or we want to iterate over all of them and we fetch the
9663 * next one.
9664 */
9665
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9666 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9667 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9668 /* search for the header from the beginning, we must first initialize
9669 * the search parameters.
9670 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9671 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9672 ctx->idx = 0;
9673 }
9674
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9675 smp->flags |= SMP_F_VOL_HDR;
9676
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9677 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9678 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
9679 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9680 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
9681 goto out;
9682
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9683 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9684 continue;
9685
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9686 smp->ctx.a[0] = ctx->line + ctx->val;
9687 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9688 }
9689
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9690 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9691 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]9692 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9693 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9694 &smp->data.str.str,
9695 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9696 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9697 found = 1;
9698 if (occ >= 0) {
9699 /* one value was returned into smp->data.str.{str,len} */
9700 smp->flags |= SMP_F_NOT_LAST;
9701 return 1;
9702 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9703 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9704 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9705 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9706 /* all cookie headers and values were scanned. If we're looking for the
9707 * last occurrence, we may return it now.
9708 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9709 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9710 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9711 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9712}
9713
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9714/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9715 * 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]9716 * multiple cookies may be parsed on the same line. The returned sample is of
9717 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9718 */
9719static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9720smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9721 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9722{
9723 struct http_txn *txn = l7;
9724 struct hdr_idx *idx = &txn->hdr_idx;
9725 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9726 const struct http_msg *msg;
9727 const char *hdr_name;
9728 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9729 int cnt;
9730 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9731 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9732
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9733 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9734 return 0;
9735
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9736 CHECK_HTTP_MESSAGE_FIRST();
9737
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9738 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9739 msg = &txn->req;
9740 hdr_name = "Cookie";
9741 hdr_name_len = 6;
9742 } else {
9743 msg = &txn->rsp;
9744 hdr_name = "Set-Cookie";
9745 hdr_name_len = 10;
9746 }
9747
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9748 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]9749 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9750 ctx.idx = 0;
9751 cnt = 0;
9752
9753 while (1) {
9754 /* Note: val_beg == NULL every time we need to fetch a new header */
9755 if (!val_beg) {
9756 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
9757 break;
9758
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9759 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9760 continue;
9761
9762 val_beg = ctx.line + ctx.val;
9763 val_end = val_beg + ctx.vlen;
9764 }
9765
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9766 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9767 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9768 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9769 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9770 &smp->data.str.str,
9771 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9772 cnt++;
9773 }
9774 }
9775
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]9776 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9777 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9778 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9779 return 1;
9780}
9781
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9782/* Fetch an cookie's integer value. The integer value is returned. It
9783 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
9784 */
9785static int
9786smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9787 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9788{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9789 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9790
9791 if (ret > 0) {
9792 smp->type = SMP_T_UINT;
9793 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9794 }
9795
9796 return ret;
9797}
9798
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9799/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9800/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9801/************************************************************************/
9802
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9803/*
9804 * Given a path string and its length, find the position of beginning of the
9805 * query string. Returns NULL if no query string is found in the path.
9806 *
9807 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
9808 *
9809 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
9810 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9811static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9812{
9813 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]9814
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9815 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9816 return p ? p + 1 : NULL;
9817}
9818
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9819static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9820{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9821 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9822}
9823
9824/*
9825 * Given a url parameter, find the starting position of the first occurence,
9826 * or NULL if the parameter is not found.
9827 *
9828 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
9829 * the function will return query_string+8.
9830 */
9831static char*
9832find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9833 char* url_param_name, size_t url_param_name_l,
9834 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9835{
9836 char *pos, *last;
9837
9838 pos = query_string;
9839 last = query_string + query_string_l - url_param_name_l - 1;
9840
9841 while (pos <= last) {
9842 if (pos[url_param_name_l] == '=') {
9843 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
9844 return pos;
9845 pos += url_param_name_l + 1;
9846 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9847 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9848 pos++;
9849 pos++;
9850 }
9851 return NULL;
9852}
9853
9854/*
9855 * Given a url parameter name, returns its value and size into *value and
9856 * *value_l respectively, and returns non-zero. If the parameter is not found,
9857 * zero is returned and value/value_l are not touched.
9858 */
9859static int
9860find_url_param_value(char* path, size_t path_l,
9861 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9862 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9863{
9864 char *query_string, *qs_end;
9865 char *arg_start;
9866 char *value_start, *value_end;
9867
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9868 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9869 if (!query_string)
9870 return 0;
9871
9872 qs_end = path + path_l;
9873 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9874 url_param_name, url_param_name_l,
9875 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9876 if (!arg_start)
9877 return 0;
9878
9879 value_start = arg_start + url_param_name_l + 1;
9880 value_end = value_start;
9881
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9882 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9883 value_end++;
9884
9885 *value = value_start;
9886 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]9887 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9888}
9889
9890static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9891smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9892 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9893{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9894 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9895 struct http_txn *txn = l7;
9896 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9897
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9898 if (!args || args[0].type != ARGT_STR ||
9899 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9900 return 0;
9901
9902 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9903
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9904 if (args[1].type)
9905 delim = *args[1].data.str.str;
9906
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9907 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]9908 args->data.str.str, args->data.str.len,
9909 &smp->data.str.str, &smp->data.str.len,
9910 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9911 return 0;
9912
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]9913 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9914 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9915 return 1;
9916}
9917
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9918/* Return the signed integer value for the specified url parameter (see url_param
9919 * above).
9920 */
9921static int
9922smp_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]9923 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9924{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9925 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9926
9927 if (ret > 0) {
9928 smp->type = SMP_T_UINT;
9929 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9930 }
9931
9932 return ret;
9933}
9934
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9935/* This produces a 32-bit hash of the concatenation of the first occurrence of
9936 * the Host header followed by the path component if it begins with a slash ('/').
9937 * This means that '*' will not be added, resulting in exactly the first Host
9938 * entry. If no Host header is found, then the path is used. The resulting value
9939 * is hashed using the url hash followed by a full avalanche hash and provides a
9940 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
9941 * high-traffic sites without having to store whole paths.
9942 * this differs from the base32 functions in that it includes the url parameters
9943 * as well as the path
9944 */
9945static int
9946smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]9947 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9948{
9949 struct http_txn *txn = l7;
9950 struct hdr_ctx ctx;
9951 unsigned int hash = 0;
9952 char *ptr, *beg, *end;
9953 int len;
9954
9955 CHECK_HTTP_MESSAGE_FIRST();
9956
9957 ctx.idx = 0;
9958 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
9959 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
9960 ptr = ctx.line + ctx.val;
9961 len = ctx.vlen;
9962 while (len--)
9963 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
9964 }
9965
9966 /* now retrieve the path */
9967 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
9968 beg = http_get_path(txn);
9969 if (!beg)
9970 beg = end;
9971
9972 for (ptr = beg; ptr < end ; ptr++);
9973
9974 if (beg < ptr && *beg == '/') {
9975 while (beg < ptr)
9976 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
9977 }
9978 hash = full_hash(hash);
9979
9980 smp->type = SMP_T_UINT;
9981 smp->data.uint = hash;
9982 smp->flags = SMP_F_VOL_1ST;
9983 return 1;
9984}
9985
9986/* This concatenates the source address with the 32-bit hash of the Host and
9987 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
9988 * per-url counters. The result is a binary block from 8 to 20 bytes depending
9989 * on the source address length. The URL hash is stored before the address so
9990 * that in environments where IPv6 is insignificant, truncating the output to
9991 * 8 bytes would still work.
9992 */
9993static int
9994smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]9995 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9996{
9997 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9998 struct connection *cli_conn = objt_conn(l4->si[0].end);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9999
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]10000 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10001 return 0;
10002
10003 temp = get_trash_chunk();
10004 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
10005 temp->len += sizeof(smp->data.uint);
10006
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10007 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10008 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10009 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]10010 temp->len += 4;
10011 break;
10012 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10013 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]10014 temp->len += 16;
10015 break;
10016 default:
10017 return 0;
10018 }
10019
10020 smp->data.str = *temp;
10021 smp->type = SMP_T_BIN;
10022 return 1;
10023}
10024
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10025/* This function is used to validate the arguments passed to any "hdr" fetch
10026 * keyword. These keywords support an optional positive or negative occurrence
10027 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
10028 * is assumed that the types are already the correct ones. Returns 0 on error,
10029 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
10030 * error message in case of error, that the caller is responsible for freeing.
10031 * The initial location must either be freeable or NULL.
10032 */
10033static int val_hdr(struct arg *arg, char **err_msg)
10034{
10035 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]10036 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10037 return 0;
10038 }
10039 return 1;
10040}
10041
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10042/* takes an UINT value on input supposed to represent the time since EPOCH,
10043 * adds an optional offset found in args[0] and emits a string representing
10044 * the date in RFC-1123/5322 format.
10045 */
10046static int sample_conv_http_date(const struct arg *args, struct sample *smp)
10047{
10048 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
10049 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
10050 struct chunk *temp;
10051 struct tm *tm;
10052 time_t curr_date = smp->data.uint;
10053
10054 /* add offset */
10055 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
10056 curr_date += args[0].data.sint;
10057
10058 tm = gmtime(&curr_date);
10059
10060 temp = get_trash_chunk();
10061 temp->len = snprintf(temp->str, temp->size - temp->len,
10062 "%s, %02d %s %04d %02d:%02d:%02d GMT",
10063 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
10064 tm->tm_hour, tm->tm_min, tm->tm_sec);
10065
10066 smp->data.str = *temp;
10067 smp->type = SMP_T_STR;
10068 return 1;
10069}
10070
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10071/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10072/* All supported ACL keywords must be declared here. */
10073/************************************************************************/
10074
10075/* Note: must not be declared <const> as its list will be overwritten.
10076 * Please take care of keeping this list alphabetically sorted.
10077 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]10078static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10079 { "base", "base", pat_parse_str, pat_match_str },
10080 { "base_beg", "base", pat_parse_str, pat_match_beg },
10081 { "base_dir", "base", pat_parse_str, pat_match_dir },
10082 { "base_dom", "base", pat_parse_str, pat_match_dom },
10083 { "base_end", "base", pat_parse_str, pat_match_end },
10084 { "base_len", "base", pat_parse_int, pat_match_len },
10085 { "base_reg", "base", pat_parse_reg, pat_match_reg },
10086 { "base_sub", "base", pat_parse_str, pat_match_sub },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10087
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10088 { "cook", "req.cook", pat_parse_str, pat_match_str },
10089 { "cook_beg", "req.cook", pat_parse_str, pat_match_beg },
10090 { "cook_dir", "req.cook", pat_parse_str, pat_match_dir },
10091 { "cook_dom", "req.cook", pat_parse_str, pat_match_dom },
10092 { "cook_end", "req.cook", pat_parse_str, pat_match_end },
10093 { "cook_len", "req.cook", pat_parse_int, pat_match_len },
10094 { "cook_reg", "req.cook", pat_parse_reg, pat_match_reg },
10095 { "cook_sub", "req.cook", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10096
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10097 { "hdr", "req.hdr", pat_parse_str, pat_match_str },
10098 { "hdr_beg", "req.hdr", pat_parse_str, pat_match_beg },
10099 { "hdr_dir", "req.hdr", pat_parse_str, pat_match_dir },
10100 { "hdr_dom", "req.hdr", pat_parse_str, pat_match_dom },
10101 { "hdr_end", "req.hdr", pat_parse_str, pat_match_end },
10102 { "hdr_len", "req.hdr", pat_parse_int, pat_match_len },
10103 { "hdr_reg", "req.hdr", pat_parse_reg, pat_match_reg },
10104 { "hdr_sub", "req.hdr", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10105
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10106 { "http_auth_group", NULL, pat_parse_strcat, pat_match_auth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10107
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10108 { "method", NULL, pat_parse_meth, pat_match_meth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10109
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10110 { "path", "path", pat_parse_str, pat_match_str },
10111 { "path_beg", "path", pat_parse_str, pat_match_beg },
10112 { "path_dir", "path", pat_parse_str, pat_match_dir },
10113 { "path_dom", "path", pat_parse_str, pat_match_dom },
10114 { "path_end", "path", pat_parse_str, pat_match_end },
10115 { "path_len", "path", pat_parse_int, pat_match_len },
10116 { "path_reg", "path", pat_parse_reg, pat_match_reg },
10117 { "path_sub", "path", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10118
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10119 { "req_ver", "req.ver", pat_parse_str, pat_match_str },
10120 { "resp_ver", "res.ver", pat_parse_str, pat_match_str },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10121
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10122 { "scook", "res.cook", pat_parse_str, pat_match_str },
10123 { "scook_beg", "res.cook", pat_parse_str, pat_match_beg },
10124 { "scook_dir", "res.cook", pat_parse_str, pat_match_dir },
10125 { "scook_dom", "res.cook", pat_parse_str, pat_match_dom },
10126 { "scook_end", "res.cook", pat_parse_str, pat_match_end },
10127 { "scook_len", "res.cook", pat_parse_int, pat_match_len },
10128 { "scook_reg", "res.cook", pat_parse_reg, pat_match_reg },
10129 { "scook_sub", "res.cook", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10130
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10131 { "shdr", "res.hdr", pat_parse_str, pat_match_str },
10132 { "shdr_beg", "res.hdr", pat_parse_str, pat_match_beg },
10133 { "shdr_dir", "res.hdr", pat_parse_str, pat_match_dir },
10134 { "shdr_dom", "res.hdr", pat_parse_str, pat_match_dom },
10135 { "shdr_end", "res.hdr", pat_parse_str, pat_match_end },
10136 { "shdr_len", "res.hdr", pat_parse_int, pat_match_len },
10137 { "shdr_reg", "res.hdr", pat_parse_reg, pat_match_reg },
10138 { "shdr_sub", "res.hdr", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10139
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10140 { "url", "url", pat_parse_str, pat_match_str },
10141 { "url_beg", "url", pat_parse_str, pat_match_beg },
10142 { "url_dir", "url", pat_parse_str, pat_match_dir },
10143 { "url_dom", "url", pat_parse_str, pat_match_dom },
10144 { "url_end", "url", pat_parse_str, pat_match_end },
10145 { "url_len", "url", pat_parse_int, pat_match_len },
10146 { "url_reg", "url", pat_parse_reg, pat_match_reg },
10147 { "url_sub", "url", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10148
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10149 { "urlp", "urlp", pat_parse_str, pat_match_str },
10150 { "urlp_beg", "urlp", pat_parse_str, pat_match_beg },
10151 { "urlp_dir", "urlp", pat_parse_str, pat_match_dir },
10152 { "urlp_dom", "urlp", pat_parse_str, pat_match_dom },
10153 { "urlp_end", "urlp", pat_parse_str, pat_match_end },
10154 { "urlp_len", "urlp", pat_parse_int, pat_match_len },
10155 { "urlp_reg", "urlp", pat_parse_reg, pat_match_reg },
10156 { "urlp_sub", "urlp", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10157
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]10158 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10159}};
10160
10161/************************************************************************/
10162/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10163/************************************************************************/
10164/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]10165static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10166 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10167 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10168 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
10169
10170 /* cookie is valid in both directions (eg: for "stick ...") but cook*
10171 * are only here to match the ACL's name, are request-only and are used
10172 * for ACL compatibility only.
10173 */
10174 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10175 { "cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
10176 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10177 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10178
10179 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
10180 * only here to match the ACL's name, are request-only and are used for
10181 * ACL compatibility only.
10182 */
10183 { "hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
10184 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10185 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10186 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10187
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]10188 { "http_auth", smp_fetch_http_auth, ARG1(1,USR), NULL, SMP_T_BOOL, SMP_USE_HRQHV },
10189 { "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]10190 { "http_first_req", smp_fetch_http_first_req, 0, NULL, SMP_T_BOOL, SMP_USE_HRQHP },
10191 { "method", smp_fetch_meth, 0, NULL, SMP_T_UINT, SMP_USE_HRQHP },
10192 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10193
10194 /* HTTP protocol on the request path */
10195 { "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]10196 { "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]10197
10198 /* HTTP version on the request path */
10199 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10200 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10201
10202 /* HTTP version on the response path */
10203 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_CSTR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10204 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10205
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10206 /* explicit req.{cook,hdr} are used to force the fetch direction to be request-only */
10207 { "req.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10208 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10209 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10210
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10211 { "req.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV },
10212 { "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]10213 { "req.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV },
10214 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10215 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10216 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10217
10218 /* explicit req.{cook,hdr} are used to force the fetch direction to be response-only */
10219 { "res.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10220 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10221 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10222
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10223 { "res.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10224 { "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]10225 { "res.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10226 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10227 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10228 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10229
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10230 /* scook is valid only on the response and is used for ACL compatibility */
10231 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10232 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10233 { "scook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10234 { "set-cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV }, /* deprecated */
10235
10236 /* shdr is valid only on the response and is used for ACL compatibility */
10237 { "shdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10238 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10239 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10240 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10241
10242 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
10243 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10244 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10245 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10246 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
10247 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10248 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10249 { "urlp" , smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10250 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10251 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10252}};
10253
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10254
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10255/* Note: must not be declared <const> as its list will be overwritten */
10256static struct sample_conv_kw_list sample_conv_kws = {ILH, {
10257 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR },
10258 { NULL, NULL, 0, 0, 0 },
10259}};
10260
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10261__attribute__((constructor))
10262static void __http_protocol_init(void)
10263{
10264 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10265 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10266 sample_register_convs(&sample_conv_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10267}
10268
10269
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]10270/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]10271 * Local variables:
10272 * c-indent-level: 8
10273 * c-basic-offset: 8
10274 * End:
10275 */