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git01.mediatek.com / haproxy / 48099c7a073692deb2f01cab4f47b85c4eb4dcd8 / . / src / proto_http.c
blob: 94cf352bef591a06ee27c0ba2ffe3e0363bbd64f [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 {
297 http_meth_t meth;
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 */
770static http_meth_t find_http_meth(const char *str, const int len)
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.
916 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]917void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]918{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]919 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]920
921 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]922 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]923 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]924 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]925 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]926 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]927 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]928 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]929 503, 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_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]931 http_server_error(s, si, SN_ERR_SRVCL, 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_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]934 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
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_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]937 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]938 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]939 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]940 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]941 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]942}
943
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]944extern const char sess_term_cond[8];
945extern const char sess_fin_state[8];
946extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]947struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]948struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]949struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]950
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]951/*
952 * Capture headers from message starting at <som> according to header list
953 * <cap_hdr>, and fill the <idx> structure appropriately.
954 */
955void capture_headers(char *som, struct hdr_idx *idx,
956 char **cap, struct cap_hdr *cap_hdr)
957{
958 char *eol, *sol, *col, *sov;
959 int cur_idx;
960 struct cap_hdr *h;
961 int len;
962
963 sol = som + hdr_idx_first_pos(idx);
964 cur_idx = hdr_idx_first_idx(idx);
965
966 while (cur_idx) {
967 eol = sol + idx->v[cur_idx].len;
968
969 col = sol;
970 while (col < eol && *col != ':')
971 col++;
972
973 sov = col + 1;
974 while (sov < eol && http_is_lws[(unsigned char)*sov])
975 sov++;
976
977 for (h = cap_hdr; h; h = h->next) {
978 if ((h->namelen == col - sol) &&
979 (strncasecmp(sol, h->name, h->namelen) == 0)) {
980 if (cap[h->index] == NULL)
981 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]982 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]983
984 if (cap[h->index] == NULL) {
985 Alert("HTTP capture : out of memory.\n");
986 continue;
987 }
988
989 len = eol - sov;
990 if (len > h->len)
991 len = h->len;
992
993 memcpy(cap[h->index], sov, len);
994 cap[h->index][len]=0;
995 }
996 }
997 sol = eol + idx->v[cur_idx].cr + 1;
998 cur_idx = idx->v[cur_idx].next;
999 }
1000}
1001
1002
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1003/* either we find an LF at <ptr> or we jump to <bad>.
1004 */
1005#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1006
1007/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1008 * otherwise to <http_msg_ood> with <state> set to <st>.
1009 */
1010#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1011 ptr++; \
1012 if (likely(ptr < end)) \
1013 goto good; \
1014 else { \
1015 state = (st); \
1016 goto http_msg_ood; \
1017 } \
1018 } while (0)
1019
1020
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1021/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1022 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1023 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1024 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1025 * will give undefined results.
1026 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1027 * and that msg->sol points to the beginning of the response.
1028 * If a complete line is found (which implies that at least one CR or LF is
1029 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1030 * returned indicating an incomplete line (which does not mean that parts have
1031 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1032 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1033 * upon next call.
1034 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1035 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1036 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1037 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1038 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1039 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1040const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1041 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1042 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1043{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1044 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1045
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1046 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1047 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1048 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1049 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1050 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1051
1052 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1053 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1054 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1055 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1056 state = HTTP_MSG_ERROR;
1057 break;
1058
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1059 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1060 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1061 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1062 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1063 goto http_msg_rpcode;
1064 }
1065 if (likely(HTTP_IS_SPHT(*ptr)))
1066 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1067 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1068 state = HTTP_MSG_ERROR;
1069 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1070
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1071 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1072 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1073 if (likely(!HTTP_IS_LWS(*ptr)))
1074 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1075
1076 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1077 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1078 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1079 }
1080
1081 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1082 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1083 http_msg_rsp_reason:
1084 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1085 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1086 msg->sl.st.r_l = 0;
1087 goto http_msg_rpline_eol;
1088
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1089 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1090 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1091 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1092 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1093 goto http_msg_rpreason;
1094 }
1095 if (likely(HTTP_IS_SPHT(*ptr)))
1096 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1097 /* so it's a CR/LF, so there is no reason phrase */
1098 goto http_msg_rsp_reason;
1099
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1100 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1101 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1102 if (likely(!HTTP_IS_CRLF(*ptr)))
1103 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1104 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1105 http_msg_rpline_eol:
1106 /* We have seen the end of line. Note that we do not
1107 * necessarily have the \n yet, but at least we know that we
1108 * have EITHER \r OR \n, otherwise the response would not be
1109 * complete. We can then record the response length and return
1110 * to the caller which will be able to register it.
1111 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1112 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1113 return ptr;
1114
1115#ifdef DEBUG_FULL
1116 default:
1117 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1118 exit(1);
1119#endif
1120 }
1121
1122 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1123 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1124 if (ret_state)
1125 *ret_state = state;
1126 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1127 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1128 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1129}
1130
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1131/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1132 * This function parses a request line between <ptr> and <end>, starting with
1133 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1134 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1135 * will give undefined results.
1136 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1137 * and that msg->sol points to the beginning of the request.
1138 * If a complete line is found (which implies that at least one CR or LF is
1139 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1140 * returned indicating an incomplete line (which does not mean that parts have
1141 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1142 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1143 * upon next call.
1144 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1145 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1146 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1147 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1148 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1149 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1150const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1151 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1152 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1153{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1154 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1155
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1156 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1157 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1158 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1159 if (likely(HTTP_IS_TOKEN(*ptr)))
1160 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1161
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1162 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1163 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1164 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1165 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1166
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1167 if (likely(HTTP_IS_CRLF(*ptr))) {
1168 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1169 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1170 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1171 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1172 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1173 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1174 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1175 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1176 msg->sl.rq.v_l = 0;
1177 goto http_msg_rqline_eol;
1178 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1179 state = HTTP_MSG_ERROR;
1180 break;
1181
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1182 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1183 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1184 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1185 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1186 goto http_msg_rquri;
1187 }
1188 if (likely(HTTP_IS_SPHT(*ptr)))
1189 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1190 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1191 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1192
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1193 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1194 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1195 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1196 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1197
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1198 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1199 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1200 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1201 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1202
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1203 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1204 /* non-ASCII chars are forbidden unless option
1205 * accept-invalid-http-request is enabled in the frontend.
1206 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1207 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1208 if (msg->err_pos < -1)
1209 goto invalid_char;
1210 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1211 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1212 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1213 }
1214
1215 if (likely(HTTP_IS_CRLF(*ptr))) {
1216 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1217 goto http_msg_req09_uri_e;
1218 }
1219
1220 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1221 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1222 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1223 state = HTTP_MSG_ERROR;
1224 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1225
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1226 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1227 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1228 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1229 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1230 goto http_msg_rqver;
1231 }
1232 if (likely(HTTP_IS_SPHT(*ptr)))
1233 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1234 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1235 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1236
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1237 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1238 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1239 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1240 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1241
1242 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1243 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1244 http_msg_rqline_eol:
1245 /* We have seen the end of line. Note that we do not
1246 * necessarily have the \n yet, but at least we know that we
1247 * have EITHER \r OR \n, otherwise the request would not be
1248 * complete. We can then record the request length and return
1249 * to the caller which will be able to register it.
1250 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1251 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1252 return ptr;
1253 }
1254
1255 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1256 state = HTTP_MSG_ERROR;
1257 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1258
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1259#ifdef DEBUG_FULL
1260 default:
1261 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1262 exit(1);
1263#endif
1264 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1265
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1266 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1267 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1268 if (ret_state)
1269 *ret_state = state;
1270 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1271 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1272 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1273}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1274
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1275/*
1276 * Returns the data from Authorization header. Function may be called more
1277 * than once so data is stored in txn->auth_data. When no header is found
1278 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1279 * searching again for something we are unable to find anyway.
1280 */
1281
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1282char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1283
1284int
1285get_http_auth(struct session *s)
1286{
1287
1288 struct http_txn *txn = &s->txn;
1289 struct chunk auth_method;
1290 struct hdr_ctx ctx;
1291 char *h, *p;
1292 int len;
1293
1294#ifdef DEBUG_AUTH
1295 printf("Auth for session %p: %d\n", s, txn->auth.method);
1296#endif
1297
1298 if (txn->auth.method == HTTP_AUTH_WRONG)
1299 return 0;
1300
1301 if (txn->auth.method)
1302 return 1;
1303
1304 txn->auth.method = HTTP_AUTH_WRONG;
1305
1306 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1307
1308 if (txn->flags & TX_USE_PX_CONN) {
1309 h = "Proxy-Authorization";
1310 len = strlen(h);
1311 } else {
1312 h = "Authorization";
1313 len = strlen(h);
1314 }
1315
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1316 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]1317 return 0;
1318
1319 h = ctx.line + ctx.val;
1320
1321 p = memchr(h, ' ', ctx.vlen);
1322 if (!p || p == h)
1323 return 0;
1324
1325 chunk_initlen(&auth_method, h, 0, p-h);
1326 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1327
1328 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1329
1330 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1331 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1332
1333 if (len < 0)
1334 return 0;
1335
1336
1337 get_http_auth_buff[len] = '\0';
1338
1339 p = strchr(get_http_auth_buff, ':');
1340
1341 if (!p)
1342 return 0;
1343
1344 txn->auth.user = get_http_auth_buff;
1345 *p = '\0';
1346 txn->auth.pass = p+1;
1347
1348 txn->auth.method = HTTP_AUTH_BASIC;
1349 return 1;
1350 }
1351
1352 return 0;
1353}
1354
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1355
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1356/*
1357 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1358 * depending on the initial msg->msg_state. The caller is responsible for
1359 * ensuring that the message does not wrap. The function can be preempted
1360 * everywhere when data are missing and recalled at the exact same location
1361 * with no information loss. The message may even be realigned between two
1362 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1363 * 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]1364 * fields. Note that msg->sol will be initialized after completing the first
1365 * state, so that none of the msg pointers has to be initialized prior to the
1366 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1367 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1368void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1369{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1370 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1371 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1372 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1373
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1374 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1375 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1376 ptr = buf->p + msg->next;
1377 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1378
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1379 if (unlikely(ptr >= end))
1380 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1381
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1382 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1383 /*
1384 * First, states that are specific to the response only.
1385 * We check them first so that request and headers are
1386 * closer to each other (accessed more often).
1387 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1388 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1389 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1390 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1391 /* we have a start of message, but we have to check
1392 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1393 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1394 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1395 if (unlikely(ptr != buf->p)) {
1396 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1397 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1398 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1399 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1400 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1401 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1402 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1403 hdr_idx_init(idx);
1404 state = HTTP_MSG_RPVER;
1405 goto http_msg_rpver;
1406 }
1407
1408 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1409 goto http_msg_invalid;
1410
1411 if (unlikely(*ptr == '\n'))
1412 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1413 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1414 /* stop here */
1415
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1416 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1417 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1418 EXPECT_LF_HERE(ptr, http_msg_invalid);
1419 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1420 /* stop here */
1421
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1422 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1423 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1424 case HTTP_MSG_RPVER_SP:
1425 case HTTP_MSG_RPCODE:
1426 case HTTP_MSG_RPCODE_SP:
1427 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1428 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1429 state, ptr, end,
1430 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1431 if (unlikely(!ptr))
1432 return;
1433
1434 /* we have a full response and we know that we have either a CR
1435 * or an LF at <ptr>.
1436 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1437 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1438
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1439 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1440 if (likely(*ptr == '\r'))
1441 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1442 goto http_msg_rpline_end;
1443
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1444 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1445 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1446 /* msg->sol must point to the first of CR or LF. */
1447 EXPECT_LF_HERE(ptr, http_msg_invalid);
1448 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1449 /* stop here */
1450
1451 /*
1452 * Second, states that are specific to the request only
1453 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1454 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1455 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1456 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1457 /* we have a start of message, but we have to check
1458 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1459 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1460 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1461 if (likely(ptr != buf->p)) {
1462 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1463 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1464 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1465 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1466 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1467 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1468 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1469 state = HTTP_MSG_RQMETH;
1470 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1471 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1472
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1473 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1474 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1475
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1476 if (unlikely(*ptr == '\n'))
1477 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1478 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1479 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1480
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1481 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1482 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1483 EXPECT_LF_HERE(ptr, http_msg_invalid);
1484 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1485 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1486
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1487 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1488 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1489 case HTTP_MSG_RQMETH_SP:
1490 case HTTP_MSG_RQURI:
1491 case HTTP_MSG_RQURI_SP:
1492 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1493 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1494 state, ptr, end,
1495 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1496 if (unlikely(!ptr))
1497 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1498
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1499 /* we have a full request and we know that we have either a CR
1500 * or an LF at <ptr>.
1501 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1502 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1503
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1504 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1505 if (likely(*ptr == '\r'))
1506 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1507 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1508
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1509 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1510 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1511 /* check for HTTP/0.9 request : no version information available.
1512 * msg->sol must point to the first of CR or LF.
1513 */
1514 if (unlikely(msg->sl.rq.v_l == 0))
1515 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1516
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1517 EXPECT_LF_HERE(ptr, http_msg_invalid);
1518 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1519 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1520
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1521 /*
1522 * Common states below
1523 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1524 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1525 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1526 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1527 if (likely(!HTTP_IS_CRLF(*ptr))) {
1528 goto http_msg_hdr_name;
1529 }
1530
1531 if (likely(*ptr == '\r'))
1532 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1533 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1534
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1535 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1536 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1537 /* assumes msg->sol points to the first char */
1538 if (likely(HTTP_IS_TOKEN(*ptr)))
1539 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1540
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1541 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1542 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]1543
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1544 if (likely(msg->err_pos < -1) || *ptr == '\n')
1545 goto http_msg_invalid;
1546
1547 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1548 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1549
1550 /* and we still accept this non-token character */
1551 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1552
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1553 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1554 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1555 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1556 if (likely(HTTP_IS_SPHT(*ptr)))
1557 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]1558
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1559 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1560 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1561
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1562 if (likely(!HTTP_IS_CRLF(*ptr))) {
1563 goto http_msg_hdr_val;
1564 }
1565
1566 if (likely(*ptr == '\r'))
1567 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1568 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1569
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1570 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1571 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1572 EXPECT_LF_HERE(ptr, http_msg_invalid);
1573 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]1574
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1575 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1576 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1577 if (likely(HTTP_IS_SPHT(*ptr))) {
1578 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1579 for (; buf->p + msg->sov < ptr; msg->sov++)
1580 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1581 goto http_msg_hdr_l1_sp;
1582 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1583 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1584 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1585 goto http_msg_complete_header;
1586
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1587 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1588 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1589 /* assumes msg->sol points to the first char, and msg->sov
1590 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1591 */
1592 if (likely(!HTTP_IS_CRLF(*ptr)))
1593 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1594
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1595 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1596 /* Note: we could also copy eol into ->eoh so that we have the
1597 * real header end in case it ends with lots of LWS, but is this
1598 * really needed ?
1599 */
1600 if (likely(*ptr == '\r'))
1601 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1602 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1603
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1604 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1605 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1606 EXPECT_LF_HERE(ptr, http_msg_invalid);
1607 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]1608
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1609 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1610 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1611 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1612 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1613 for (; buf->p + msg->eol < ptr; msg->eol++)
1614 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1615 goto http_msg_hdr_val;
1616 }
1617 http_msg_complete_header:
1618 /*
1619 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1620 * Assumes msg->sol points to the first char, msg->sov points
1621 * to the first character of the value and msg->eol to the
1622 * first CR or LF so we know how the line ends. We insert last
1623 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1624 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1625 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1626 idx, idx->tail) < 0))
1627 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1628
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1629 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1630 if (likely(!HTTP_IS_CRLF(*ptr))) {
1631 goto http_msg_hdr_name;
1632 }
1633
1634 if (likely(*ptr == '\r'))
1635 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1636 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1637
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1638 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1639 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1640 /* Assumes msg->sol points to the first of either CR or LF */
1641 EXPECT_LF_HERE(ptr, http_msg_invalid);
1642 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1643 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1644 msg->eoh = msg->sol;
1645 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1646 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1647 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1648
1649 case HTTP_MSG_ERROR:
1650 /* this may only happen if we call http_msg_analyser() twice with an error */
1651 break;
1652
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1653#ifdef DEBUG_FULL
1654 default:
1655 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1656 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1657#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1658 }
1659 http_msg_ood:
1660 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1661 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1662 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1663 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1664
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1665 http_msg_invalid:
1666 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1667 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1668 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1669 return;
1670}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1671
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1672/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1673 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1674 * nothing is done and 1 is returned.
1675 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1676static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1677{
1678 int delta;
1679 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1680 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1681
1682 if (msg->sl.rq.v_l != 0)
1683 return 1;
1684
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1685 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1686 delta = 0;
1687
1688 if (msg->sl.rq.u_l == 0) {
1689 /* if no URI was set, add "/" */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1690 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1691 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1692 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1693 }
1694 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1695 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]1696 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1697 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1698 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1699 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1700 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1701 NULL, NULL);
1702 if (unlikely(!cur_end))
1703 return 0;
1704
1705 /* we have a full HTTP/1.0 request now and we know that
1706 * we have either a CR or an LF at <ptr>.
1707 */
1708 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1709 return 1;
1710}
1711
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1712/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1713 * and "keep-alive" values. If we already know that some headers may safely
1714 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1715 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1716 * - 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]1717 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1718 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1719 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1720 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1721 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1722 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1723void 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]1724{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1725 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1726 const char *hdr_val = "Connection";
1727 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1728
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1729 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1730 return;
1731
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1732 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1733 hdr_val = "Proxy-Connection";
1734 hdr_len = 16;
1735 }
1736
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1737 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1738 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1739 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]1740 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1741 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1742 if (to_del & 2)
1743 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1744 else
1745 txn->flags |= TX_CON_KAL_SET;
1746 }
1747 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1748 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1749 if (to_del & 1)
1750 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1751 else
1752 txn->flags |= TX_CON_CLO_SET;
1753 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1754 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1755 txn->flags |= TX_HDR_CONN_UPG;
1756 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1757 }
1758
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1759 txn->flags |= TX_HDR_CONN_PRS;
1760 return;
1761}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1762
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1763/* Apply desired changes on the Connection: header. Values may be removed and/or
1764 * added depending on the <wanted> flags, which are exclusively composed of
1765 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1766 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1767 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1768void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1769{
1770 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1771 const char *hdr_val = "Connection";
1772 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1773
1774 ctx.idx = 0;
1775
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1776
1777 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1778 hdr_val = "Proxy-Connection";
1779 hdr_len = 16;
1780 }
1781
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1782 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1783 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]1784 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1785 if (wanted & TX_CON_KAL_SET)
1786 txn->flags |= TX_CON_KAL_SET;
1787 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1788 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1789 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1790 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1791 if (wanted & TX_CON_CLO_SET)
1792 txn->flags |= TX_CON_CLO_SET;
1793 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1794 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1795 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1796 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1797
1798 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1799 return;
1800
1801 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1802 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1803 hdr_val = "Connection: close";
1804 hdr_len = 17;
1805 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1806 hdr_val = "Proxy-Connection: close";
1807 hdr_len = 23;
1808 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1809 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1810 }
1811
1812 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1813 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1814 hdr_val = "Connection: keep-alive";
1815 hdr_len = 22;
1816 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1817 hdr_val = "Proxy-Connection: keep-alive";
1818 hdr_len = 28;
1819 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1820 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1821 }
1822 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1823}
1824
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1825/* 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]1826 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1827 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1828 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1829 * 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]1830 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1831static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1832{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1833 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1834 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1835 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1836 const char *end = buf->data + buf->size;
1837 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1838 unsigned int chunk = 0;
1839
1840 /* The chunk size is in the following form, though we are only
1841 * interested in the size and CRLF :
1842 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1843 */
1844 while (1) {
1845 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1846 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1847 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1848 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1849 if (c < 0) /* not a hex digit anymore */
1850 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1851 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1852 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1853 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1854 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1855 chunk = (chunk << 4) + c;
1856 }
1857
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1858 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1859 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1860 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1861
1862 while (http_is_spht[(unsigned char)*ptr]) {
1863 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1864 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1865 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1866 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1867 }
1868
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1869 /* Up to there, we know that at least one byte is present at *ptr. Check
1870 * for the end of chunk size.
1871 */
1872 while (1) {
1873 if (likely(HTTP_IS_CRLF(*ptr))) {
1874 /* we now have a CR or an LF at ptr */
1875 if (likely(*ptr == '\r')) {
1876 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1877 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1878 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1879 return 0;
1880 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1881
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1882 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1883 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1884 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1885 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1886 /* done */
1887 break;
1888 }
1889 else if (*ptr == ';') {
1890 /* chunk extension, ends at next CRLF */
1891 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1892 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1893 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1894 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1895
1896 while (!HTTP_IS_CRLF(*ptr)) {
1897 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1898 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1899 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1900 return 0;
1901 }
1902 /* we have a CRLF now, loop above */
1903 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1904 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1905 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1906 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1907 }
1908
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1909 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1910 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1911 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1912 */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1913 if (unlikely(ptr < ptr_old))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1914 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1915 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1916 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1917 msg->chunk_len = chunk;
1918 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1919 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1920 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1921 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1922 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1923 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1924}
1925
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1926/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1927 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1928 * the trailers is found, it is automatically scheduled to be forwarded,
1929 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1930 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1931 * 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]1932 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1933 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1934 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1935 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1936 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1937 * matches the length of trailers already parsed and not forwarded. It is also
1938 * important to note that this function is designed to be able to parse wrapped
1939 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1940 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1941static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1942{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1943 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1944
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1945 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1946 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1947 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1948 const char *ptr = b_ptr(buf, msg->next);
1949 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1950 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1951
1952 /* scan current line and stop at LF or CRLF */
1953 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1954 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1955 return 0;
1956
1957 if (*ptr == '\n') {
1958 if (!p1)
1959 p1 = ptr;
1960 p2 = ptr;
1961 break;
1962 }
1963
1964 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1965 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1966 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1967 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1968 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1969 p1 = ptr;
1970 }
1971
1972 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1973 if (ptr >= buf->data + buf->size)
1974 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1975 }
1976
1977 /* after LF; point to beginning of next line */
1978 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1979 if (p2 >= buf->data + buf->size)
1980 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1981
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1982 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1983 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1984 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1985
1986 /* schedule this line for forwarding */
1987 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1988 if (msg->sov >= buf->size)
1989 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1990
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1991 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1992 /* LF/CRLF at beginning of line => end of trailers at p2.
1993 * Everything was scheduled for forwarding, there's nothing
1994 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1995 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1996 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1997 msg->msg_state = HTTP_MSG_DONE;
1998 return 1;
1999 }
2000 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2001 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2002 }
2003}
2004
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]2005/* 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]2006 * 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]2007 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2008 * 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]2009 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
2010 * not enough data are available, the function does not change anything and
2011 * returns zero. If a parse error is encountered, the function returns < 0 and
2012 * does not change anything. Note: this function is designed to parse wrapped
2013 * CRLF at the end of the buffer.
2014 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2015static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2016{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2017 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2018 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2019 int bytes;
2020
2021 /* NB: we'll check data availabilty at the end. It's not a
2022 * problem because whatever we match first will be checked
2023 * against the correct length.
2024 */
2025 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2026 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2027 if (*ptr == '\r') {
2028 bytes++;
2029 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2030 if (ptr >= buf->data + buf->size)
2031 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2032 }
2033
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2034 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2035 return 0;
2036
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2037 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2038 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2039 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2040 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2041
2042 ptr++;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2043 if (unlikely(ptr >= buf->data + buf->size))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2044 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2045 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
2046 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]2047 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2048 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
2049 return 1;
2050}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2051
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2052
2053/*
2054 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2055 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2056int select_compression_request_header(struct session *s, struct buffer *req)
2057{
2058 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2059 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2060 struct hdr_ctx ctx;
2061 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2062 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2063
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2064 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
2065 * 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]2066 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
2067 */
2068 ctx.idx = 0;
2069 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
2070 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2071 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
2072 (ctx.vlen < 31 ||
2073 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
2074 ctx.line[ctx.val + 30] < '6' ||
2075 (ctx.line[ctx.val + 30] == '6' &&
2076 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
2077 s->comp_algo = NULL;
2078 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2079 }
2080
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2081 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2082 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]2083 ctx.idx = 0;
2084 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2085 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2086 if (word_match(ctx.line + ctx.val, ctx.vlen, comp_algo->name, comp_algo->name_len)) {
2087 s->comp_algo = comp_algo;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2088
2089 /* remove all occurrences of the header when "compression offload" is set */
2090
2091 if ((s->be->comp && s->be->comp->offload) ||
2092 (s->fe->comp && s->fe->comp->offload)) {
2093 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2094 ctx.idx = 0;
2095 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2096 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2097 }
2098 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2099 return 1;
2100 }
2101 }
2102 }
2103 }
2104
2105 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2106 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2107 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2108 if (comp_algo->add_data == identity_add_data) {
2109 s->comp_algo = comp_algo;
2110 return 1;
2111 }
2112 }
2113 }
2114
2115 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2116 return 0;
2117}
2118
2119/*
2120 * Selects a comression algorithm depending of the server response.
2121 */
2122int select_compression_response_header(struct session *s, struct buffer *res)
2123{
2124 struct http_txn *txn = &s->txn;
2125 struct http_msg *msg = &txn->rsp;
2126 struct hdr_ctx ctx;
2127 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2128
2129 /* no common compression algorithm was found in request header */
2130 if (s->comp_algo == NULL)
2131 goto fail;
2132
2133 /* HTTP < 1.1 should not be compressed */
2134 if (!(msg->flags & HTTP_MSGF_VER_11))
2135 goto fail;
2136
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2137 /* 200 only */
2138 if (txn->status != 200)
2139 goto fail;
2140
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2141 /* Content-Length is null */
2142 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2143 goto fail;
2144
Willy Tarreau667c2a32013-04-09 08:13:58 +0200[diff] [blame]2145 /* TEMPORARY WORKAROUND: do not compress if response is chunked !!!!!! */
2146 if (msg->flags & HTTP_MSGF_TE_CHNK)
2147 goto fail;
2148
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2149 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2150 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2151 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2152 goto fail;
2153
Willy Tarreau56e9ffa2013-01-05 16:20:35 +0100[diff] [blame]2154 /* no compression when Cache-Control: no-transform is present in the message */
2155 ctx.idx = 0;
2156 while (http_find_header2("Cache-Control", 13, res->p, &txn->hdr_idx, &ctx)) {
2157 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12))
2158 goto fail;
2159 }
2160
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2161 comp_type = NULL;
2162
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2163 /* we don't want to compress multipart content-types, nor content-types that are
2164 * not listed in the "compression type" directive if any. If no content-type was
2165 * found but configuration requires one, we don't compress either. Backend has
2166 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2167 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2168 ctx.idx = 0;
2169 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2170 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2171 goto fail;
2172
2173 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
2174 (s->fe->comp && (comp_type = s->fe->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2175 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2176 if (ctx.vlen >= comp_type->name_len &&
2177 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2178 /* this Content-Type should be compressed */
2179 break;
2180 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2181 /* this Content-Type should not be compressed */
2182 if (comp_type == NULL)
2183 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2184 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2185 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2186 else { /* no content-type header */
2187 if ((s->be->comp && s->be->comp->types) || (s->fe->comp && s->fe->comp->types))
2188 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2189 }
2190
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2191 /* limit compression rate */
2192 if (global.comp_rate_lim > 0)
2193 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2194 goto fail;
2195
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2196 /* limit cpu usage */
2197 if (idle_pct < compress_min_idle)
2198 goto fail;
2199
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2200 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2201 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2202 goto fail;
2203
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2204 s->flags |= SN_COMP_READY;
2205
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2206 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2207 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2208 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2209 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2210
2211 /* add Transfer-Encoding header */
2212 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2213 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2214
2215 /*
2216 * Add Content-Encoding header when it's not identity encoding.
2217 * RFC 2616 : Identity encoding: This content-coding is used only in the
2218 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2219 * header.
2220 */
2221 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2222 trash.len = 18;
2223 memcpy(trash.str, "Content-Encoding: ", trash.len);
2224 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2225 trash.len += s->comp_algo->name_len;
2226 trash.str[trash.len] = '\0';
2227 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2228 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2229 return 1;
2230
2231fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2232 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2233 return 0;
2234}
2235
2236
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2237/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2238 * processing can continue on next analysers, or zero if it either needs more
2239 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2240 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2241 * when it has nothing left to do, and may remove any analyser when it wants to
2242 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2243 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2244int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2245{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2246 /*
2247 * We will parse the partial (or complete) lines.
2248 * We will check the request syntax, and also join multi-line
2249 * headers. An index of all the lines will be elaborated while
2250 * parsing.
2251 *
2252 * For the parsing, we use a 28 states FSM.
2253 *
2254 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2255 * req->buf->p = beginning of request
2256 * req->buf->p + msg->eoh = end of processed headers / start of current one
2257 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2258 * msg->eol = end of current header or line (LF or CRLF)
2259 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2260 *
2261 * At end of parsing, we may perform a capture of the error (if any), and
2262 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2263 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2264 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2265 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2266
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2267 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2268 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2269 struct http_txn *txn = &s->txn;
2270 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2271 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2272
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2273 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]2274 now_ms, __FUNCTION__,
2275 s,
2276 req,
2277 req->rex, req->wex,
2278 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2279 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2280 req->analysers);
2281
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2282 /* we're speaking HTTP here, so let's speak HTTP to the client */
2283 s->srv_error = http_return_srv_error;
2284
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2285 /* There's a protected area at the end of the buffer for rewriting
2286 * purposes. We don't want to start to parse the request if the
2287 * protected area is affected, because we may have to move processed
2288 * data later, which is much more complicated.
2289 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2290 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2291 if (txn->flags & TX_NOT_FIRST) {
2292 if (unlikely(!channel_reserved(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2293 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2294 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2295 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2296 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2297 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2298 return 0;
2299 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2300 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2301 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2302 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2303 }
2304
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2305 /* Note that we have the same problem with the response ; we
2306 * may want to send a redirect, error or anything which requires
2307 * some spare space. So we'll ensure that we have at least
2308 * maxrewrite bytes available in the response buffer before
2309 * processing that one. This will only affect pipelined
2310 * keep-alive requests.
2311 */
2312 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2313 unlikely(!channel_reserved(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2314 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2315 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2316 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2317 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]2318 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2319 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2320 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2321 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2322 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2323 return 0;
2324 }
2325 }
2326
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2327 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2328 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2329 }
2330
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2331 /* 1: we might have to print this header in debug mode */
2332 if (unlikely((global.mode & MODE_DEBUG) &&
2333 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2334 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2335 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2336
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2337 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2338 /* this is a bit complex : in case of error on the request line,
2339 * we know that rq.l is still zero, so we display only the part
2340 * up to the end of the line (truncated by debug_hdr).
2341 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2342 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2343 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2344
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2345 sol += hdr_idx_first_pos(&txn->hdr_idx);
2346 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2347
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2348 while (cur_idx) {
2349 eol = sol + txn->hdr_idx.v[cur_idx].len;
2350 debug_hdr("clihdr", s, sol, eol);
2351 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2352 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2353 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2354 }
2355
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2356
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2357 /*
2358 * Now we quickly check if we have found a full valid request.
2359 * If not so, we check the FD and buffer states before leaving.
2360 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2361 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2362 * requests are checked first. When waiting for a second request
2363 * on a keep-alive session, if we encounter and error, close, t/o,
2364 * we note the error in the session flags but don't set any state.
2365 * Since the error will be noted there, it will not be counted by
2366 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2367 * Last, we may increase some tracked counters' http request errors on
2368 * the cases that are deliberately the client's fault. For instance,
2369 * a timeout or connection reset is not counted as an error. However
2370 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2371 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2372
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2373 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2374 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2375 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2376 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2377 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2378 session_inc_http_req_ctr(s);
2379 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2380 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2381 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2382 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2383
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2384 /* 1: Since we are in header mode, if there's no space
2385 * left for headers, we won't be able to free more
2386 * later, so the session will never terminate. We
2387 * must terminate it now.
2388 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2389 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2390 /* FIXME: check if URI is set and return Status
2391 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2392 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2393 session_inc_http_req_ctr(s);
2394 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2395 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2396 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2397 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2398 goto return_bad_req;
2399 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2400
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2401 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2402 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2403 if (!(s->flags & SN_ERR_MASK))
2404 s->flags |= SN_ERR_CLICL;
2405
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2406 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2407 goto failed_keep_alive;
2408
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2409 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2410 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2411 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]2412 session_inc_http_err_ctr(s);
2413 }
2414
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2415 txn->status = 400;
2416 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2417 msg->msg_state = HTTP_MSG_ERROR;
2418 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2419
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2420 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2421 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2422 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2423 if (s->listener->counters)
2424 s->listener->counters->failed_req++;
2425
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2426 if (!(s->flags & SN_FINST_MASK))
2427 s->flags |= SN_FINST_R;
2428 return 0;
2429 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2430
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2431 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2432 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]2433 if (!(s->flags & SN_ERR_MASK))
2434 s->flags |= SN_ERR_CLITO;
2435
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2436 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2437 goto failed_keep_alive;
2438
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2439 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2440 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2441 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]2442 session_inc_http_err_ctr(s);
2443 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2444 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2445 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2446 msg->msg_state = HTTP_MSG_ERROR;
2447 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2448
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2449 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2450 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2451 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2452 if (s->listener->counters)
2453 s->listener->counters->failed_req++;
2454
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2455 if (!(s->flags & SN_FINST_MASK))
2456 s->flags |= SN_FINST_R;
2457 return 0;
2458 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2459
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2460 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2461 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2462 if (!(s->flags & SN_ERR_MASK))
2463 s->flags |= SN_ERR_CLICL;
2464
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2465 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2466 goto failed_keep_alive;
2467
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2468 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2469 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]2470 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2471 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2472 msg->msg_state = HTTP_MSG_ERROR;
2473 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2474
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2475 session_inc_http_err_ctr(s);
2476 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2477 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2478 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2479 if (s->listener->counters)
2480 s->listener->counters->failed_req++;
2481
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2482 if (!(s->flags & SN_FINST_MASK))
2483 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2484 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2485 }
2486
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2487 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2488 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2489 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2490#ifdef TCP_QUICKACK
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2491 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2492 /* We need more data, we have to re-enable quick-ack in case we
2493 * previously disabled it, otherwise we might cause the client
2494 * to delay next data.
2495 */
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]2496 setsockopt(s->si[0].conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2497 }
2498#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2499
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2500 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2501 /* If the client starts to talk, let's fall back to
2502 * request timeout processing.
2503 */
2504 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2505 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2506 }
2507
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2508 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2509 if (!tick_isset(req->analyse_exp)) {
2510 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2511 (txn->flags & TX_WAIT_NEXT_RQ) &&
2512 tick_isset(s->be->timeout.httpka))
2513 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2514 else
2515 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2516 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2517
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2518 /* we're not ready yet */
2519 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2520
2521 failed_keep_alive:
2522 /* Here we process low-level errors for keep-alive requests. In
2523 * short, if the request is not the first one and it experiences
2524 * a timeout, read error or shutdown, we just silently close so
2525 * that the client can try again.
2526 */
2527 txn->status = 0;
2528 msg->msg_state = HTTP_MSG_RQBEFORE;
2529 req->analysers = 0;
2530 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2531 s->logs.level = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2532 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2533 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2534 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2535 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2536
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2537 /* OK now we have a complete HTTP request with indexed headers. Let's
2538 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2539 * 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]2540 * 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]2541 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2542 * byte after the last LF. msg->sov points to the first byte of data.
2543 * msg->eol cannot be trusted because it may have been left uninitialized
2544 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2545 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2546
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2547 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2548 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2549
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2550 if (txn->flags & TX_WAIT_NEXT_RQ) {
2551 /* kill the pending keep-alive timeout */
2552 txn->flags &= ~TX_WAIT_NEXT_RQ;
2553 req->analyse_exp = TICK_ETERNITY;
2554 }
2555
2556
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2557 /* Maybe we found in invalid header name while we were configured not
2558 * to block on that, so we have to capture it now.
2559 */
2560 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2561 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]2562
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2563 /*
2564 * 1: identify the method
2565 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2566 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2567
2568 /* we can make use of server redirect on GET and HEAD */
2569 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2570 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2571
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2572 /*
2573 * 2: check if the URI matches the monitor_uri.
2574 * We have to do this for every request which gets in, because
2575 * the monitor-uri is defined by the frontend.
2576 */
2577 if (unlikely((s->fe->monitor_uri_len != 0) &&
2578 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2579 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2580 s->fe->monitor_uri,
2581 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2582 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2583 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2584 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2585 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2586
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2587 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2588 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2589
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2590 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2591 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2592 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]2593
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2594 ret = acl_pass(ret);
2595 if (cond->pol == ACL_COND_UNLESS)
2596 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2597
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2598 if (ret) {
2599 /* we fail this request, let's return 503 service unavail */
2600 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2601 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2602 if (!(s->flags & SN_ERR_MASK))
2603 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2604 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2605 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2606 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2607
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2608 /* nothing to fail, let's reply normaly */
2609 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2610 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2611 if (!(s->flags & SN_ERR_MASK))
2612 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2613 goto return_prx_cond;
2614 }
2615
2616 /*
2617 * 3: Maybe we have to copy the original REQURI for the logs ?
2618 * Note: we cannot log anymore if the request has been
2619 * classified as invalid.
2620 */
2621 if (unlikely(s->logs.logwait & LW_REQ)) {
2622 /* we have a complete HTTP request that we must log */
2623 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2624 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2625
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2626 if (urilen >= REQURI_LEN)
2627 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2628 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2629 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2630
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2631 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2632 s->do_log(s);
2633 } else {
2634 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2635 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2636 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2637
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2638 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2639 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2640 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2641
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2642 /* ... and check if the request is HTTP/1.1 or above */
2643 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2644 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2645 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2646 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2647 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2648
2649 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2650 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]2651
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2652 /* if the frontend has "option http-use-proxy-header", we'll check if
2653 * we have what looks like a proxied connection instead of a connection,
2654 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2655 * Note that this is *not* RFC-compliant, however browsers and proxies
2656 * happen to do that despite being non-standard :-(
2657 * We consider that a request not beginning with either '/' or '*' is
2658 * a proxied connection, which covers both "scheme://location" and
2659 * CONNECT ip:port.
2660 */
2661 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2662 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2663 txn->flags |= TX_USE_PX_CONN;
2664
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2665 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2666 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2667
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2668 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2669 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2670 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2671 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2672
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2673 /* 6: determine the transfer-length.
2674 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2675 * the presence of a message-body in a REQUEST and its transfer length
2676 * must be determined that way (in order of precedence) :
2677 * 1. The presence of a message-body in a request is signaled by the
2678 * inclusion of a Content-Length or Transfer-Encoding header field
2679 * in the request's header fields. When a request message contains
2680 * both a message-body of non-zero length and a method that does
2681 * not define any semantics for that request message-body, then an
2682 * origin server SHOULD either ignore the message-body or respond
2683 * with an appropriate error message (e.g., 413). A proxy or
2684 * gateway, when presented the same request, SHOULD either forward
2685 * the request inbound with the message- body or ignore the
2686 * message-body when determining a response.
2687 *
2688 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2689 * and the "chunked" transfer-coding (Section 6.2) is used, the
2690 * transfer-length is defined by the use of this transfer-coding.
2691 * If a Transfer-Encoding header field is present and the "chunked"
2692 * transfer-coding is not present, the transfer-length is defined
2693 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2694 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2695 * 3. If a Content-Length header field is present, its decimal value in
2696 * OCTETs represents both the entity-length and the transfer-length.
2697 * If a message is received with both a Transfer-Encoding header
2698 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2699 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2700 * 4. By the server closing the connection. (Closing the connection
2701 * cannot be used to indicate the end of a request body, since that
2702 * would leave no possibility for the server to send back a response.)
2703 *
2704 * Whenever a transfer-coding is applied to a message-body, the set of
2705 * transfer-codings MUST include "chunked", unless the message indicates
2706 * it is terminated by closing the connection. When the "chunked"
2707 * transfer-coding is used, it MUST be the last transfer-coding applied
2708 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2709 */
2710
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2711 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2712 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2713 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2714 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2715 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2716 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2717 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2718 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2719 /* bad transfer-encoding (chunked followed by something else) */
2720 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2721 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2722 break;
2723 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2724 }
2725
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2726 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2727 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2728 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2729 signed long long cl;
2730
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2731 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2732 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2733 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2734 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2735
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2736 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2737 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2738 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2739 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2740
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2741 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2742 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2743 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2744 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2745
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2746 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2747 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2748 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2749 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2750
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2751 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2752 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2753 }
2754
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2755 /* bodyless requests have a known length */
2756 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2757 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2758
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2759 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2760 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2761 req->analyse_exp = TICK_ETERNITY;
2762 return 1;
2763
2764 return_bad_req:
2765 /* We centralize bad requests processing here */
2766 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2767 /* we detected a parsing error. We want to archive this request
2768 * in the dedicated proxy area for later troubleshooting.
2769 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2770 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]2771 }
2772
2773 txn->req.msg_state = HTTP_MSG_ERROR;
2774 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2775 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2776
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2777 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2778 if (s->listener->counters)
2779 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2780
2781 return_prx_cond:
2782 if (!(s->flags & SN_ERR_MASK))
2783 s->flags |= SN_ERR_PRXCOND;
2784 if (!(s->flags & SN_FINST_MASK))
2785 s->flags |= SN_FINST_R;
2786
2787 req->analysers = 0;
2788 req->analyse_exp = TICK_ETERNITY;
2789 return 0;
2790}
2791
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2792
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2793/* This function prepares an applet to handle the stats. It can deal with the
2794 * "100-continue" expectation, check that admin rules are met for POST requests,
2795 * and program a response message if something was unexpected. It cannot fail
2796 * 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]2797 * analysers nor counters, which are left to the caller. It does not touch
2798 * s->target which is supposed to already point to the stats applet.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2799 */
2800int http_handle_stats(struct session *s, struct channel *req)
2801{
2802 struct stats_admin_rule *stats_admin_rule;
2803 struct stream_interface *si = s->rep->prod;
2804 struct http_txn *txn = &s->txn;
2805 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2806 struct uri_auth *uri_auth = s->be->uri_auth;
2807 const char *uri, *h, *lookup;
2808
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2809 memset(&si->appctx.ctx.stats, 0, sizeof(si->appctx.ctx.stats));
2810 si->appctx.ctx.stats.st_code = STAT_STATUS_INIT;
2811 si->appctx.ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2812
2813 uri = msg->chn->buf->p + msg->sl.rq.u;
2814 lookup = uri + uri_auth->uri_len;
2815
2816 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
2817 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2818 si->appctx.ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2819 break;
2820 }
2821 }
2822
2823 if (uri_auth->refresh) {
2824 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
2825 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2826 si->appctx.ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2827 break;
2828 }
2829 }
2830 }
2831
2832 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
2833 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2834 si->appctx.ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2835 break;
2836 }
2837 }
2838
2839 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
2840 if (memcmp(h, ";st=", 4) == 0) {
2841 int i;
2842 h += 4;
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2843 si->appctx.ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2844 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
2845 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2846 si->appctx.ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2847 break;
2848 }
2849 }
2850 break;
2851 }
2852 }
2853
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2854 si->appctx.ctx.stats.scope_str = 0;
2855 si->appctx.ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2856 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
2857 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
2858 int itx = 0;
2859 const char *h2;
2860 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
2861 const char *err;
2862
2863 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
2864 h2 = h;
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2865 si->appctx.ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2866 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
2867 itx++;
2868 h++;
2869 }
2870
2871 if (itx > STAT_SCOPE_TXT_MAXLEN)
2872 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2873 si->appctx.ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2874
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2875 /* scope_txt = search query, si->appctx.ctx.stats.scope_len is always <= STAT_SCOPE_TXT_MAXLEN */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2876 memcpy(scope_txt, h2, itx);
2877 scope_txt[itx] = '\0';
2878 err = invalid_char(scope_txt);
2879 if (err) {
2880 /* bad char in search text => clear scope */
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2881 si->appctx.ctx.stats.scope_str = 0;
2882 si->appctx.ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2883 }
2884 break;
2885 }
2886 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2887
2888 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2889 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2890 int ret = 1;
2891
2892 if (stats_admin_rule->cond) {
2893 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
2894 ret = acl_pass(ret);
2895 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
2896 ret = !ret;
2897 }
2898
2899 if (ret) {
2900 /* no rule, or the rule matches */
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2901 s->rep->prod->appctx.ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2902 break;
2903 }
2904 }
2905
2906 /* Was the status page requested with a POST ? */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2907 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2908 if (si->appctx.ctx.stats.flags & STAT_ADMIN) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2909 if (msg->msg_state < HTTP_MSG_100_SENT) {
2910 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
2911 * send an HTTP/1.1 100 Continue intermediate response.
2912 */
2913 if (msg->flags & HTTP_MSGF_VER_11) {
2914 struct hdr_ctx ctx;
2915 ctx.idx = 0;
2916 /* Expect is allowed in 1.1, look for it */
2917 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
2918 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
2919 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
2920 }
2921 }
2922 msg->msg_state = HTTP_MSG_100_SENT;
2923 s->logs.tv_request = now; /* update the request timer to reflect full request */
2924 }
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2925 s->rep->prod->appctx.st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2926 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2927 else {
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2928 si->appctx.ctx.stats.st_code = STAT_STATUS_DENY;
2929 s->rep->prod->appctx.st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]2930 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2931 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2932 else {
2933 /* So it was another method (GET/HEAD) */
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2934 s->rep->prod->appctx.st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2935 }
2936
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2937 s->task->nice = -32; /* small boost for HTTP statistics */
2938 stream_int_register_handler(s->rep->prod, &http_stats_applet);
Willy Tarreau9b6c2c72013-11-24 09:38:33 +0100[diff] [blame]2939 s->rep->prod->appctx.st1 = s->rep->prod->appctx.st2 = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2940 return 1;
2941}
2942
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]2943/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
2944 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
2945 */
2946static inline void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
2947{
2948#ifdef IP_TOS
2949 if (from.ss_family == AF_INET)
2950 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
2951#endif
2952#ifdef IPV6_TCLASS
2953 if (from.ss_family == AF_INET6) {
2954 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
2955 /* v4-mapped addresses need IP_TOS */
2956 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
2957 else
2958 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
2959 }
2960#endif
2961}
2962
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2963/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2964 * transaction <txn>. Returns the first rule that prevents further processing
2965 * of the request (auth, deny, ...) or NULL if it executed all rules or stopped
2966 * on an allow. It may set the TX_CLDENY on txn->flags if it encounters a deny
2967 * rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2968 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2969static struct http_req_rule *
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2970http_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]2971{
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2972 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2973 struct hdr_ctx ctx;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2974
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2975 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2976 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2977 continue;
2978
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2979 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2980 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2981 int ret;
2982
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2983 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]2984 ret = acl_pass(ret);
2985
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2986 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2987 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2988
2989 if (!ret) /* condition not matched */
2990 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2991 }
2992
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2993
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2994 switch (rule->action) {
2995 case HTTP_REQ_ACT_ALLOW:
2996 return NULL; /* "allow" rules are OK */
2997
2998 case HTTP_REQ_ACT_DENY:
2999 txn->flags |= TX_CLDENY;
3000 return rule;
3001
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3002 case HTTP_REQ_ACT_TARPIT:
3003 txn->flags |= TX_CLTARPIT;
3004 return rule;
3005
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3006 case HTTP_REQ_ACT_AUTH:
3007 return rule;
3008
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3009 case HTTP_REQ_ACT_REDIR:
3010 return rule;
3011
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3012 case HTTP_REQ_ACT_SET_NICE:
3013 s->task->nice = rule->arg.nice;
3014 break;
3015
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3016 case HTTP_REQ_ACT_SET_TOS:
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3017 inet_set_tos(s->req->prod->conn->t.sock.fd, s->req->prod->conn->addr.from, rule->arg.tos);
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3018 break;
3019
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3020 case HTTP_REQ_ACT_SET_MARK:
3021#ifdef SO_MARK
3022 setsockopt(s->req->prod->conn->t.sock.fd, SOL_SOCKET, SO_MARK, &rule->arg.mark, sizeof(rule->arg.mark));
3023#endif
3024 break;
3025
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3026 case HTTP_REQ_ACT_SET_LOGL:
3027 s->logs.level = rule->arg.loglevel;
3028 break;
3029
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3030 case HTTP_REQ_ACT_SET_HDR:
3031 ctx.idx = 0;
3032 /* remove all occurrences of the header */
3033 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3034 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3035 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3036 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3037 /* now fall through to header addition */
3038
3039 case HTTP_REQ_ACT_ADD_HDR:
3040 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3041 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3042 trash.len = rule->arg.hdr_add.name_len;
3043 trash.str[trash.len++] = ':';
3044 trash.str[trash.len++] = ' ';
3045 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3046 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3047 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3048 }
3049 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3050
3051 /* we reached the end of the rules, nothing to report */
Willy Tarreau418c1a02012-12-25 20:52:58 +0100[diff] [blame]3052 return NULL;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3053}
3054
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3055
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3056/* Executes the http-response rules <rules> for session <s>, proxy <px> and
3057 * transaction <txn>. Returns the first rule that prevents further processing
3058 * of the response (deny, ...) or NULL if it executed all rules or stopped
3059 * on an allow. It may set the TX_SVDENY on txn->flags if it encounters a deny
3060 * rule.
3061 */
3062static struct http_res_rule *
3063http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3064{
3065 struct http_res_rule *rule;
3066 struct hdr_ctx ctx;
3067
3068 list_for_each_entry(rule, rules, list) {
3069 if (rule->action >= HTTP_RES_ACT_MAX)
3070 continue;
3071
3072 /* check optional condition */
3073 if (rule->cond) {
3074 int ret;
3075
3076 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
3077 ret = acl_pass(ret);
3078
3079 if (rule->cond->pol == ACL_COND_UNLESS)
3080 ret = !ret;
3081
3082 if (!ret) /* condition not matched */
3083 continue;
3084 }
3085
3086
3087 switch (rule->action) {
3088 case HTTP_RES_ACT_ALLOW:
3089 return NULL; /* "allow" rules are OK */
3090
3091 case HTTP_RES_ACT_DENY:
3092 txn->flags |= TX_SVDENY;
3093 return rule;
3094
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3095 case HTTP_RES_ACT_SET_NICE:
3096 s->task->nice = rule->arg.nice;
3097 break;
3098
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3099 case HTTP_RES_ACT_SET_TOS:
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]3100 inet_set_tos(s->req->prod->conn->t.sock.fd, s->req->prod->conn->addr.from, rule->arg.tos);
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3101 break;
3102
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3103 case HTTP_RES_ACT_SET_MARK:
3104#ifdef SO_MARK
3105 setsockopt(s->req->prod->conn->t.sock.fd, SOL_SOCKET, SO_MARK, &rule->arg.mark, sizeof(rule->arg.mark));
3106#endif
3107 break;
3108
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3109 case HTTP_RES_ACT_SET_LOGL:
3110 s->logs.level = rule->arg.loglevel;
3111 break;
3112
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3113 case HTTP_RES_ACT_SET_HDR:
3114 ctx.idx = 0;
3115 /* remove all occurrences of the header */
3116 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3117 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3118 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3119 }
3120 /* now fall through to header addition */
3121
3122 case HTTP_RES_ACT_ADD_HDR:
3123 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3124 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3125 trash.len = rule->arg.hdr_add.name_len;
3126 trash.str[trash.len++] = ':';
3127 trash.str[trash.len++] = ' ';
3128 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3129 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3130 break;
3131 }
3132 }
3133
3134 /* we reached the end of the rules, nothing to report */
3135 return NULL;
3136}
3137
3138
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3139/* Perform an HTTP redirect based on the information in <rule>. The function
3140 * returns non-zero on success, or zero in case of a, irrecoverable error such
3141 * as too large a request to build a valid response.
3142 */
3143static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3144{
3145 struct http_msg *msg = &txn->req;
3146 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3147 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3148
3149 /* build redirect message */
3150 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3151 case 308:
3152 msg_fmt = HTTP_308;
3153 break;
3154 case 307:
3155 msg_fmt = HTTP_307;
3156 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3157 case 303:
3158 msg_fmt = HTTP_303;
3159 break;
3160 case 301:
3161 msg_fmt = HTTP_301;
3162 break;
3163 case 302:
3164 default:
3165 msg_fmt = HTTP_302;
3166 break;
3167 }
3168
3169 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3170 return 0;
3171
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3172 location = trash.str + trash.len;
3173
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3174 switch(rule->type) {
3175 case REDIRECT_TYPE_SCHEME: {
3176 const char *path;
3177 const char *host;
3178 struct hdr_ctx ctx;
3179 int pathlen;
3180 int hostlen;
3181
3182 host = "";
3183 hostlen = 0;
3184 ctx.idx = 0;
3185 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
3186 host = ctx.line + ctx.val;
3187 hostlen = ctx.vlen;
3188 }
3189
3190 path = http_get_path(txn);
3191 /* build message using path */
3192 if (path) {
3193 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3194 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3195 int qs = 0;
3196 while (qs < pathlen) {
3197 if (path[qs] == '?') {
3198 pathlen = qs;
3199 break;
3200 }
3201 qs++;
3202 }
3203 }
3204 } else {
3205 path = "/";
3206 pathlen = 1;
3207 }
3208
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3209 if (rule->rdr_str) { /* this is an old "redirect" rule */
3210 /* check if we can add scheme + "://" + host + path */
3211 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3212 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3213
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3214 /* add scheme */
3215 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3216 trash.len += rule->rdr_len;
3217 }
3218 else {
3219 /* add scheme with executing log format */
3220 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]3221
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3222 /* check if we can add scheme + "://" + host + path */
3223 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3224 return 0;
3225 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3226 /* add "://" */
3227 memcpy(trash.str + trash.len, "://", 3);
3228 trash.len += 3;
3229
3230 /* add host */
3231 memcpy(trash.str + trash.len, host, hostlen);
3232 trash.len += hostlen;
3233
3234 /* add path */
3235 memcpy(trash.str + trash.len, path, pathlen);
3236 trash.len += pathlen;
3237
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3238 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3239 if (trash.len && trash.str[trash.len - 1] != '/' &&
3240 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3241 if (trash.len > trash.size - 5)
3242 return 0;
3243 trash.str[trash.len] = '/';
3244 trash.len++;
3245 }
3246
3247 break;
3248 }
3249 case REDIRECT_TYPE_PREFIX: {
3250 const char *path;
3251 int pathlen;
3252
3253 path = http_get_path(txn);
3254 /* build message using path */
3255 if (path) {
3256 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3257 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3258 int qs = 0;
3259 while (qs < pathlen) {
3260 if (path[qs] == '?') {
3261 pathlen = qs;
3262 break;
3263 }
3264 qs++;
3265 }
3266 }
3267 } else {
3268 path = "/";
3269 pathlen = 1;
3270 }
3271
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3272 if (rule->rdr_str) { /* this is an old "redirect" rule */
3273 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3274 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3275
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3276 /* add prefix. Note that if prefix == "/", we don't want to
3277 * add anything, otherwise it makes it hard for the user to
3278 * configure a self-redirection.
3279 */
3280 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3281 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3282 trash.len += rule->rdr_len;
3283 }
3284 }
3285 else {
3286 /* add prefix with executing log format */
3287 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3288
3289 /* Check length */
3290 if (trash.len + pathlen > trash.size - 4)
3291 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3292 }
3293
3294 /* add path */
3295 memcpy(trash.str + trash.len, path, pathlen);
3296 trash.len += pathlen;
3297
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3298 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3299 if (trash.len && trash.str[trash.len - 1] != '/' &&
3300 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3301 if (trash.len > trash.size - 5)
3302 return 0;
3303 trash.str[trash.len] = '/';
3304 trash.len++;
3305 }
3306
3307 break;
3308 }
3309 case REDIRECT_TYPE_LOCATION:
3310 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3311 if (rule->rdr_str) { /* this is an old "redirect" rule */
3312 if (trash.len + rule->rdr_len > trash.size - 4)
3313 return 0;
3314
3315 /* add location */
3316 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3317 trash.len += rule->rdr_len;
3318 }
3319 else {
3320 /* add location with executing log format */
3321 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]3322
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3323 /* Check left length */
3324 if (trash.len > trash.size - 4)
3325 return 0;
3326 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3327 break;
3328 }
3329
3330 if (rule->cookie_len) {
3331 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3332 trash.len += 14;
3333 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3334 trash.len += rule->cookie_len;
3335 memcpy(trash.str + trash.len, "\r\n", 2);
3336 trash.len += 2;
3337 }
3338
3339 /* add end of headers and the keep-alive/close status.
3340 * We may choose to set keep-alive if the Location begins
3341 * with a slash, because the client will come back to the
3342 * same server.
3343 */
3344 txn->status = rule->code;
3345 /* let's log the request time */
3346 s->logs.tv_request = now;
3347
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3348 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3349 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3350 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3351 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3352 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3353 /* keep-alive possible */
3354 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3355 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3356 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3357 trash.len += 30;
3358 } else {
3359 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3360 trash.len += 24;
3361 }
3362 }
3363 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3364 trash.len += 4;
3365 bo_inject(txn->rsp.chn, trash.str, trash.len);
3366 /* "eat" the request */
3367 bi_fast_delete(txn->req.chn->buf, msg->sov);
3368 msg->sov = 0;
3369 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3370 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3371 txn->req.msg_state = HTTP_MSG_CLOSED;
3372 txn->rsp.msg_state = HTTP_MSG_DONE;
3373 } else {
3374 /* keep-alive not possible */
3375 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3376 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3377 trash.len += 29;
3378 } else {
3379 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3380 trash.len += 23;
3381 }
3382 stream_int_retnclose(txn->req.chn->prod, &trash);
3383 txn->req.chn->analysers = 0;
3384 }
3385
3386 if (!(s->flags & SN_ERR_MASK))
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3387 s->flags |= SN_ERR_LOCAL;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3388 if (!(s->flags & SN_FINST_MASK))
3389 s->flags |= SN_FINST_R;
3390
3391 return 1;
3392}
3393
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3394/* This stream analyser runs all HTTP request processing which is common to
3395 * frontends and backends, which means blocking ACLs, filters, connection-close,
3396 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3397 * 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]3398 * either needs more data or wants to immediately abort the request (eg: deny,
3399 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3400 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3401int 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]3402{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3403 struct http_txn *txn = &s->txn;
3404 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3405 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3406 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3407 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3408 struct cond_wordlist *wl;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3409
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3410 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3411 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3412 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3413 return 0;
3414 }
3415
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3416 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3417 req->analyse_exp = TICK_ETERNITY;
3418
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3419 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]3420 now_ms, __FUNCTION__,
3421 s,
3422 req,
3423 req->rex, req->wex,
3424 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3425 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3426 req->analysers);
3427
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3428 /* first check whether we have some ACLs set to block this request */
3429 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3430 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]3431
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3432 ret = acl_pass(ret);
3433 if (cond->pol == ACL_COND_UNLESS)
3434 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]3435
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3436 if (ret) {
3437 txn->status = 403;
3438 /* let's log the request time */
3439 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3440 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3441 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3442 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3443 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3444 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3445
Willy Tarreau5d5b5d82012-12-09 12:00:04 +0100[diff] [blame]3446 /* just in case we have some per-backend tracking */
3447 session_inc_be_http_req_ctr(s);
3448
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3449 /* evaluate http-request rules */
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3450 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]3451
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3452 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3453 if (!http_req_last_rule) {
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3454 if (stats_check_uri(s->rep->prod, txn, px)) {
3455 s->target = &http_stats_applet.obj_type;
3456 /* parse the whole stats request and extract the relevant information */
3457 http_handle_stats(s, req);
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3458 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]3459 }
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3460 }
3461
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3462 /* only apply req{,i}{rep/deny/tarpit} if the request was not yet
3463 * blocked by an http-request rule.
3464 */
3465 if (!(txn->flags & (TX_CLDENY|TX_CLTARPIT)) && (px->req_exp != NULL)) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3466 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3467 goto return_bad_req;
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3468 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3469
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3470 /* return a 403 if either rule has blocked */
3471 if (txn->flags & (TX_CLDENY|TX_CLTARPIT)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3472 if (txn->flags & TX_CLDENY) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3473 txn->status = 403;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3474 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3475 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3476 session_inc_http_err_ctr(s);
Willy Tarreau687ba132013-11-16 10:13:35 +0100[diff] [blame]3477 s->fe->fe_counters.denied_req++;
3478 if (s->fe != s->be)
3479 s->be->be_counters.denied_req++;
3480 if (s->listener->counters)
3481 s->listener->counters->denied_req++;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3482 goto return_prx_cond;
3483 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3484
3485 /* When a connection is tarpitted, we use the tarpit timeout,
3486 * which may be the same as the connect timeout if unspecified.
3487 * If unset, then set it to zero because we really want it to
3488 * eventually expire. We build the tarpit as an analyser.
3489 */
3490 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3491 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3492 /* wipe the request out so that we can drop the connection early
3493 * if the client closes first.
3494 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3495 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3496 req->analysers = 0; /* remove switching rules etc... */
3497 req->analysers |= AN_REQ_HTTP_TARPIT;
3498 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3499 if (!req->analyse_exp)
3500 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3501 session_inc_http_err_ctr(s);
Willy Tarreau687ba132013-11-16 10:13:35 +0100[diff] [blame]3502 s->fe->fe_counters.denied_req++;
3503 if (s->fe != s->be)
3504 s->be->be_counters.denied_req++;
3505 if (s->listener->counters)
3506 s->listener->counters->denied_req++;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3507 return 1;
3508 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3509 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3510
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3511 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3512 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3513 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3514 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3515 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3516 * avoid to redo the same work if FE and BE have the same settings (common).
3517 * The method consists in checking if options changed between the two calls
3518 * (implying that either one is non-null, or one of them is non-null and we
3519 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3520 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3521
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3522 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3523 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3524 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3525 (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]3526 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3527
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3528 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3529 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3530 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3531 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3532 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3533 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3534 tmp = TX_CON_WANT_CLO;
3535
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3536 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3537 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3538
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3539 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3540 /* parse the Connection header and possibly clean it */
3541 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3542 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3543 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3544 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3545 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3546 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3547 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3548 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3549 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3550
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3551 /* check if client or config asks for explicit close in KAL/SCL */
3552 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3553 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3554 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3555 (!(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]3556 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3557 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3558 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3559 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3560 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3561
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3562 /* we can be blocked here because the request needs to be authenticated,
3563 * either to pass or to access stats.
3564 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3565 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_AUTH) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]3566 char *realm = http_req_last_rule->arg.auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3567
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3568 if (!realm)
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3569 realm = (objt_applet(s->target) == &http_stats_applet) ? STATS_DEFAULT_REALM : px->id;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3570
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3571 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]3572 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3573 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3574 /* on 401 we still count one error, because normal browsing
3575 * won't significantly increase the counter but brute force
3576 * attempts will.
3577 */
3578 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3579 goto return_prx_cond;
3580 }
3581
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3582 /* add request headers from the rule sets in the same order */
3583 list_for_each_entry(wl, &px->req_add, list) {
3584 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3585 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]3586 ret = acl_pass(ret);
3587 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3588 ret = !ret;
3589 if (!ret)
3590 continue;
3591 }
3592
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3593 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3594 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3595 }
3596
3597 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_REDIR) {
3598 if (!http_apply_redirect_rule(http_req_last_rule->arg.redir, s, txn))
3599 goto return_bad_req;
3600 req->analyse_exp = TICK_ETERNITY;
3601 return 1;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3602 }
3603
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3604 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3605 /* process the stats request now */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3606 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3607 s->fe->fe_counters.intercepted_req++;
3608
3609 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3610 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
3611 if (!(s->flags & SN_FINST_MASK))
3612 s->flags |= SN_FINST_R;
3613
3614 req->analyse_exp = TICK_ETERNITY;
3615 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3616 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3617 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3618
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3619 /* check whether we have some ACLs set to redirect this request */
3620 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3621 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3622 int ret;
3623
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3624 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]3625 ret = acl_pass(ret);
3626 if (rule->cond->pol == ACL_COND_UNLESS)
3627 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3628 if (!ret)
3629 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3630 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3631 if (!http_apply_redirect_rule(rule, s, txn))
3632 goto return_bad_req;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3633
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3634 req->analyse_exp = TICK_ETERNITY;
3635 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3636 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3637
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3638 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3639 * If this happens, then the data will not come immediately, so we must
3640 * send all what we have without waiting. Note that due to the small gain
3641 * 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]3642 * 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]3643 * itself once used.
3644 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3645 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3646
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3647 /* that's OK for us now, let's move on to next analysers */
3648 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3649
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3650 return_bad_req:
3651 /* We centralize bad requests processing here */
3652 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3653 /* we detected a parsing error. We want to archive this request
3654 * in the dedicated proxy area for later troubleshooting.
3655 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3656 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]3657 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3658
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3659 txn->req.msg_state = HTTP_MSG_ERROR;
3660 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3661 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3662
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3663 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3664 if (s->listener->counters)
3665 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3666
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3667 return_prx_cond:
3668 if (!(s->flags & SN_ERR_MASK))
3669 s->flags |= SN_ERR_PRXCOND;
3670 if (!(s->flags & SN_FINST_MASK))
3671 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3672
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3673 req->analysers = 0;
3674 req->analyse_exp = TICK_ETERNITY;
3675 return 0;
3676}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3677
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3678/* This function performs all the processing enabled for the current request.
3679 * It returns 1 if the processing can continue on next analysers, or zero if it
3680 * needs more data, encounters an error, or wants to immediately abort the
3681 * request. It relies on buffers flags, and updates s->req->analysers.
3682 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3683int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3684{
3685 struct http_txn *txn = &s->txn;
3686 struct http_msg *msg = &txn->req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3687
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3688 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3689 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3690 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3691 return 0;
3692 }
3693
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3694 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]3695 now_ms, __FUNCTION__,
3696 s,
3697 req,
3698 req->rex, req->wex,
3699 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3700 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3701 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3702
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3703 if (s->fe->comp || s->be->comp)
3704 select_compression_request_header(s, req->buf);
3705
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3706 /*
3707 * Right now, we know that we have processed the entire headers
3708 * and that unwanted requests have been filtered out. We can do
3709 * whatever we want with the remaining request. Also, now we
3710 * may have separate values for ->fe, ->be.
3711 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3712
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3713 /*
3714 * If HTTP PROXY is set we simply get remote server address
3715 * parsing incoming request.
3716 */
3717 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3718 url2sa(req->buf->p + msg->sl.rq.u, msg->sl.rq.u_l, &s->req->cons->conn->addr.to);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3719 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3720
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3721 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3722 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3723 * Note that doing so might move headers in the request, but
3724 * the fields will stay coherent and the URI will not move.
3725 * This should only be performed in the backend.
3726 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3727 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3728 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3729 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3730
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3731 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3732 * 8: the appsession cookie was looked up very early in 1.2,
3733 * so let's do the same now.
3734 */
3735
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3736 /* It needs to look into the URI unless persistence must be ignored */
3737 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3738 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]3739 }
3740
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3741 /* add unique-id if "header-unique-id" is specified */
3742
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]3743 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
3744 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
3745 goto return_bad_req;
3746 s->unique_id[0] = '\0';
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3747 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]3748 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3749
3750 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3751 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3752 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3753 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3754 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]3755 goto return_bad_req;
3756 }
3757
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3758 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3759 * 9: add X-Forwarded-For if either the frontend or the backend
3760 * asks for it.
3761 */
3762 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3763 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3764 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3765 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3766 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]3767 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3768 /* The header is set to be added only if none is present
3769 * and we found it, so don't do anything.
3770 */
3771 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3772 else if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3773 /* Add an X-Forwarded-For header unless the source IP is
3774 * in the 'except' network range.
3775 */
3776 if ((!s->fe->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3777 (((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr.s_addr & s->fe->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3778 != s->fe->except_net.s_addr) &&
3779 (!s->be->except_mask.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3780 (((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr.s_addr & s->be->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3781 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3782 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3783 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3784 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3785
3786 /* Note: we rely on the backend to get the header name to be used for
3787 * x-forwarded-for, because the header is really meant for the backends.
3788 * However, if the backend did not specify any option, we have to rely
3789 * on the frontend's header name.
3790 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3791 if (s->be->fwdfor_hdr_len) {
3792 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3793 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3794 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3795 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3796 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3797 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3798 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]3799
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3800 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]3801 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3802 }
3803 }
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3804 else if (s->req->prod->conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3805 /* FIXME: for the sake of completeness, we should also support
3806 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3807 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3808 int len;
3809 char pn[INET6_ADDRSTRLEN];
3810 inet_ntop(AF_INET6,
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3811 (const void *)&((struct sockaddr_in6 *)(&s->req->prod->conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3812 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3813
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3814 /* Note: we rely on the backend to get the header name to be used for
3815 * x-forwarded-for, because the header is really meant for the backends.
3816 * However, if the backend did not specify any option, we have to rely
3817 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3818 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3819 if (s->be->fwdfor_hdr_len) {
3820 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3821 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3822 } else {
3823 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3824 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3825 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3826 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3827
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3828 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]3829 goto return_bad_req;
3830 }
3831 }
3832
3833 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3834 * 10: add X-Original-To if either the frontend or the backend
3835 * asks for it.
3836 */
3837 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3838
3839 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3840 if (s->req->prod->conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3841 /* Add an X-Original-To header unless the destination IP is
3842 * in the 'except' network range.
3843 */
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3844 conn_get_to_addr(s->req->prod->conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3845
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3846 if (s->req->prod->conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3847 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3848 (((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr.s_addr & s->fe->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3849 != s->fe->except_to.s_addr) &&
3850 (!s->be->except_mask_to.s_addr ||
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3851 (((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3852 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3853 int len;
3854 unsigned char *pn;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]3855 pn = (unsigned char *)&((struct sockaddr_in *)&s->req->prod->conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3856
3857 /* Note: we rely on the backend to get the header name to be used for
3858 * x-original-to, because the header is really meant for the backends.
3859 * However, if the backend did not specify any option, we have to rely
3860 * on the frontend's header name.
3861 */
3862 if (s->be->orgto_hdr_len) {
3863 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3864 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3865 } else {
3866 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3867 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3868 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3869 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]3870
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3871 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]3872 goto return_bad_req;
3873 }
3874 }
3875 }
3876
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3877 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3878 * If an "Upgrade" token is found, the header is left untouched in order not to have
3879 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3880 * "Upgrade" is present in the Connection header.
3881 */
3882 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3883 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3884 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3885 unsigned int want_flags = 0;
3886
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3887 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3888 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3889 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3890 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3891 want_flags |= TX_CON_CLO_SET;
3892 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3893 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3894 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3895 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3896 want_flags |= TX_CON_KAL_SET;
3897 }
3898
3899 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3900 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3901 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3902
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3903
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3904 /* If we have no server assigned yet and we're balancing on url_param
3905 * with a POST request, we may be interested in checking the body for
3906 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3907 */
3908 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3909 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3910 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3911 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3912 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3913 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3914 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3915
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3916 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3917 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3918#ifdef TCP_QUICKACK
3919 /* We expect some data from the client. Unless we know for sure
3920 * we already have a full request, we have to re-enable quick-ack
3921 * in case we previously disabled it, otherwise we might cause
3922 * the client to delay further data.
3923 */
3924 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3925 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3926 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]3927 setsockopt(s->si[0].conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3928#endif
3929 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3930
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3931 /*************************************************************
3932 * OK, that's finished for the headers. We have done what we *
3933 * could. Let's switch to the DATA state. *
3934 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3935 req->analyse_exp = TICK_ETERNITY;
3936 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3937
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3938 /* if the server closes the connection, we want to immediately react
3939 * and close the socket to save packets and syscalls.
3940 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]3941 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
3942 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3943
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3944 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3945 /* OK let's go on with the BODY now */
3946 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3947
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3948 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3949 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3950 /* we detected a parsing error. We want to archive this request
3951 * in the dedicated proxy area for later troubleshooting.
3952 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3953 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]3954 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3955
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3956 txn->req.msg_state = HTTP_MSG_ERROR;
3957 txn->status = 400;
3958 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3959 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3960
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3961 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3962 if (s->listener->counters)
3963 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3964
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3965 if (!(s->flags & SN_ERR_MASK))
3966 s->flags |= SN_ERR_PRXCOND;
3967 if (!(s->flags & SN_FINST_MASK))
3968 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]3969 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]3970}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3971
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3972/* This function is an analyser which processes the HTTP tarpit. It always
3973 * returns zero, at the beginning because it prevents any other processing
3974 * from occurring, and at the end because it terminates the request.
3975 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3976int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3977{
3978 struct http_txn *txn = &s->txn;
3979
3980 /* This connection is being tarpitted. The CLIENT side has
3981 * already set the connect expiration date to the right
3982 * timeout. We just have to check that the client is still
3983 * there and that the timeout has not expired.
3984 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3985 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3986 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3987 !tick_is_expired(req->analyse_exp, now_ms))
3988 return 0;
3989
3990 /* We will set the queue timer to the time spent, just for
3991 * logging purposes. We fake a 500 server error, so that the
3992 * attacker will not suspect his connection has been tarpitted.
3993 * It will not cause trouble to the logs because we can exclude
3994 * the tarpitted connections by filtering on the 'PT' status flags.
3995 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]3996 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
3997
3998 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3999 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4000 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4001
4002 req->analysers = 0;
4003 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4004
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4005 if (!(s->flags & SN_ERR_MASK))
4006 s->flags |= SN_ERR_PRXCOND;
4007 if (!(s->flags & SN_FINST_MASK))
4008 s->flags |= SN_FINST_T;
4009 return 0;
4010}
4011
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4012/* This function is an analyser which processes the HTTP request body. It looks
4013 * for parameters to be used for the load balancing algorithm (url_param). It
4014 * must only be called after the standard HTTP request processing has occurred,
4015 * because it expects the request to be parsed. It returns zero if it needs to
4016 * read more data, or 1 once it has completed its analysis.
4017 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4018int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4019{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4020 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4021 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4022 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4023
4024 /* We have to parse the HTTP request body to find any required data.
4025 * "balance url_param check_post" should have been the only way to get
4026 * into this. We were brought here after HTTP header analysis, so all
4027 * related structures are ready.
4028 */
4029
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4030 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4031 goto missing_data;
4032
4033 if (msg->msg_state < HTTP_MSG_100_SENT) {
4034 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4035 * send an HTTP/1.1 100 Continue intermediate response.
4036 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4037 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4038 struct hdr_ctx ctx;
4039 ctx.idx = 0;
4040 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4041 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4042 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4043 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4044 }
4045 }
4046 msg->msg_state = HTTP_MSG_100_SENT;
4047 }
4048
4049 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4050 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4051 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4052 * is still null. We must save the body in msg->next because it
4053 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4054 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4055 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4056
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4057 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4058 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4059 else
4060 msg->msg_state = HTTP_MSG_DATA;
4061 }
4062
4063 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4064 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4065 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4066 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4067 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4068 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4069
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4070 if (!ret)
4071 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4072 else if (ret < 0) {
4073 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4074 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4075 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4076 }
4077
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4078 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4079 * We have the first data byte is in msg->sov. We're waiting for at
4080 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4081 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4082
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4083 if (msg->body_len < limit)
4084 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4085
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4086 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4087 goto http_end;
4088
4089 missing_data:
4090 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4091 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4092 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4093 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4094 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4095
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4096 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4097 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4098 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4099
4100 if (!(s->flags & SN_ERR_MASK))
4101 s->flags |= SN_ERR_CLITO;
4102 if (!(s->flags & SN_FINST_MASK))
4103 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4104 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4105 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4106
4107 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4108 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]4109 /* Not enough data. We'll re-use the http-request
4110 * timeout here. Ideally, we should set the timeout
4111 * relative to the accept() date. We just set the
4112 * request timeout once at the beginning of the
4113 * request.
4114 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4115 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4116 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4117 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4118 return 0;
4119 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4120
4121 http_end:
4122 /* The situation will not evolve, so let's give up on the analysis. */
4123 s->logs.tv_request = now; /* update the request timer to reflect full request */
4124 req->analysers &= ~an_bit;
4125 req->analyse_exp = TICK_ETERNITY;
4126 return 1;
4127
4128 return_bad_req: /* let's centralize all bad requests */
4129 txn->req.msg_state = HTTP_MSG_ERROR;
4130 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4131 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4132
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4133 if (!(s->flags & SN_ERR_MASK))
4134 s->flags |= SN_ERR_PRXCOND;
4135 if (!(s->flags & SN_FINST_MASK))
4136 s->flags |= SN_FINST_R;
4137
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4138 return_err_msg:
4139 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4140 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4141 if (s->listener->counters)
4142 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4143 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4144}
4145
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4146/* send a server's name with an outgoing request over an established connection.
4147 * Note: this function is designed to be called once the request has been scheduled
4148 * for being forwarded. This is the reason why it rewinds the buffer before
4149 * proceeding.
4150 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4151int 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]4152
4153 struct hdr_ctx ctx;
4154
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4155 char *hdr_name = be->server_id_hdr_name;
4156 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4157 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4158 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4159 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4160
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4161 ctx.idx = 0;
4162
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4163 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4164 if (old_o) {
4165 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4166 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4167 }
4168
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4169 old_i = chn->buf->i;
4170 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]4171 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4172 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4173 }
4174
4175 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4176 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4177 memcpy(hdr_val, hdr_name, hdr_name_len);
4178 hdr_val += hdr_name_len;
4179 *hdr_val++ = ':';
4180 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4181 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4182 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]4183
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4184 if (old_o) {
4185 /* If this was a forwarded request, we must readjust the amount of
4186 * data to be forwarded in order to take into account the size
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4187 * variations. Note that if the request was already scheduled for
4188 * forwarding, it had its req->sol pointing to the body, which
4189 * must then be updated too.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4190 */
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4191 txn->req.sol += chn->buf->i - old_i;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4192 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4193 }
4194
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4195 return 0;
4196}
4197
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4198/* Terminate current transaction and prepare a new one. This is very tricky
4199 * right now but it works.
4200 */
4201void http_end_txn_clean_session(struct session *s)
4202{
4203 /* FIXME: We need a more portable way of releasing a backend's and a
4204 * server's connections. We need a safer way to reinitialize buffer
4205 * flags. We also need a more accurate method for computing per-request
4206 * data.
4207 */
4208 http_silent_debug(__LINE__, s);
4209
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4210 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]4211 si_shutr(s->req->cons);
4212 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4213
4214 http_silent_debug(__LINE__, s);
4215
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4216 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4217 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4218 if (unlikely(s->srv_conn))
4219 sess_change_server(s, NULL);
4220 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4221
4222 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4223 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4224 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4225
4226 if (s->txn.status) {
4227 int n;
4228
4229 n = s->txn.status / 100;
4230 if (n < 1 || n > 5)
4231 n = 0;
4232
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4233 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4234 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4235 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4236 s->fe->fe_counters.p.http.comp_rsp++;
4237 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4238 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4239 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4240 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4241 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4242 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4243 s->be->be_counters.p.http.comp_rsp++;
4244 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4245 }
4246
4247 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4248 s->logs.bytes_in -= s->req->buf->i;
4249 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4250
4251 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4252 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4253 !(s->flags & SN_MONITOR) &&
4254 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4255 s->do_log(s);
4256 }
4257
4258 s->logs.accept_date = date; /* user-visible date for logging */
4259 s->logs.tv_accept = now; /* corrected date for internal use */
4260 tv_zero(&s->logs.tv_request);
4261 s->logs.t_queue = -1;
4262 s->logs.t_connect = -1;
4263 s->logs.t_data = -1;
4264 s->logs.t_close = 0;
4265 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4266 s->logs.srv_queue_size = 0; /* we will get this number soon */
4267
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4268 s->logs.bytes_in = s->req->total = s->req->buf->i;
4269 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4270
4271 if (s->pend_pos)
4272 pendconn_free(s->pend_pos);
4273
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4274 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4275 if (s->flags & SN_CURR_SESS) {
4276 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4277 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4278 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4279 if (may_dequeue_tasks(objt_server(s->target), s->be))
4280 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4281 }
4282
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4283 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4284
4285 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau1e6902f2013-09-29 10:47:38 +0200[diff] [blame]4286 s->req->cons->conn->obj_type = OBJ_TYPE_CONN;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]4287 s->req->cons->conn->t.sock.fd = -1; /* just to help with debugging */
4288 s->req->cons->conn->flags = CO_FL_NONE;
Willy Tarreau14cba4b2012-11-30 17:33:05 +0100[diff] [blame]4289 s->req->cons->conn->err_code = CO_ER_NONE;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4290 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4291 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4292 s->req->cons->exp = TICK_ETERNITY;
4293 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4294 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4295 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]4296 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]4297 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4298
4299 if (s->flags & SN_COMP_READY)
4300 s->comp_algo->end(&s->comp_ctx);
4301 s->comp_algo = NULL;
4302 s->flags &= ~SN_COMP_READY;
4303
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4304 s->txn.meth = 0;
4305 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4306 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4307 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4308 s->req->cons->flags |= SI_FL_INDEP_STR;
4309
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4310 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4311 s->req->flags |= CF_NEVER_WAIT;
4312 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4313 }
4314
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4315 /* if the request buffer is not empty, it means we're
4316 * about to process another request, so send pending
4317 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4318 * Just don't do this if the buffer is close to be full,
4319 * because the request will wait for it to flush a little
4320 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4321 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4322 if (s->req->buf->i) {
4323 if (s->rep->buf->o &&
4324 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4325 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]4326 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4327 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4328
4329 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4330 channel_auto_read(s->req);
4331 channel_auto_close(s->req);
4332 channel_auto_read(s->rep);
4333 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4334
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4335 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4336 s->rep->analysers = 0;
4337
4338 http_silent_debug(__LINE__, s);
4339}
4340
4341
4342/* This function updates the request state machine according to the response
4343 * state machine and buffer flags. It returns 1 if it changes anything (flag
4344 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4345 * it is only used to find when a request/response couple is complete. Both
4346 * this function and its equivalent should loop until both return zero. It
4347 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4348 */
4349int http_sync_req_state(struct session *s)
4350{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4351 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4352 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4353 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4354 unsigned int old_state = txn->req.msg_state;
4355
4356 http_silent_debug(__LINE__, s);
4357 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4358 return 0;
4359
4360 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4361 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4362 * We can shut the read side unless we want to abort_on_close,
4363 * or we have a POST request. The issue with POST requests is
4364 * that some browsers still send a CRLF after the request, and
4365 * this CRLF must be read so that it does not remain in the kernel
4366 * buffers, otherwise a close could cause an RST on some systems
4367 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4368 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4369 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4370 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4371
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4372 /* if the server closes the connection, we want to immediately react
4373 * and close the socket to save packets and syscalls.
4374 */
4375 chn->cons->flags |= SI_FL_NOHALF;
4376
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4377 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4378 goto wait_other_side;
4379
4380 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4381 /* The server has not finished to respond, so we
4382 * don't want to move in order not to upset it.
4383 */
4384 goto wait_other_side;
4385 }
4386
4387 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4388 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4389 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4390 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4391 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4392 goto wait_other_side;
4393 }
4394
4395 /* When we get here, it means that both the request and the
4396 * response have finished receiving. Depending on the connection
4397 * mode, we'll have to wait for the last bytes to leave in either
4398 * direction, and sometimes for a close to be effective.
4399 */
4400
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4401 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4402 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4403 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4404 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4405 }
4406 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4407 /* Option forceclose is set, or either side wants to close,
4408 * let's enforce it now that we're not expecting any new
4409 * data to come. The caller knows the session is complete
4410 * once both states are CLOSED.
4411 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4412 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4413 channel_shutr_now(chn);
4414 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4415 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4416 }
4417 else {
4418 /* The last possible modes are keep-alive and tunnel. Since tunnel
4419 * mode does not set the body analyser, we can't reach this place
4420 * in tunnel mode, so we're left with keep-alive only.
4421 * This mode is currently not implemented, we switch to tunnel mode.
4422 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4423 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4424 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4425 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4426 }
4427
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4428 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4429 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4430 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4431
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4432 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4433 txn->req.msg_state = HTTP_MSG_CLOSING;
4434 goto http_msg_closing;
4435 }
4436 else {
4437 txn->req.msg_state = HTTP_MSG_CLOSED;
4438 goto http_msg_closed;
4439 }
4440 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4441 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4442 }
4443
4444 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4445 http_msg_closing:
4446 /* nothing else to forward, just waiting for the output buffer
4447 * to be empty and for the shutw_now to take effect.
4448 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4449 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4450 txn->req.msg_state = HTTP_MSG_CLOSED;
4451 goto http_msg_closed;
4452 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4453 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4454 txn->req.msg_state = HTTP_MSG_ERROR;
4455 goto wait_other_side;
4456 }
4457 }
4458
4459 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4460 http_msg_closed:
4461 goto wait_other_side;
4462 }
4463
4464 wait_other_side:
4465 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4466 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4467}
4468
4469
4470/* This function updates the response state machine according to the request
4471 * state machine and buffer flags. It returns 1 if it changes anything (flag
4472 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4473 * it is only used to find when a request/response couple is complete. Both
4474 * this function and its equivalent should loop until both return zero. It
4475 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4476 */
4477int http_sync_res_state(struct session *s)
4478{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4479 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4480 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4481 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4482 unsigned int old_state = txn->rsp.msg_state;
4483
4484 http_silent_debug(__LINE__, s);
4485 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4486 return 0;
4487
4488 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4489 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4490 * still monitor the server connection for a possible close
4491 * while the request is being uploaded, so we don't disable
4492 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4493 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4494 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4495
4496 if (txn->req.msg_state == HTTP_MSG_ERROR)
4497 goto wait_other_side;
4498
4499 if (txn->req.msg_state < HTTP_MSG_DONE) {
4500 /* The client seems to still be sending data, probably
4501 * because we got an error response during an upload.
4502 * We have the choice of either breaking the connection
4503 * or letting it pass through. Let's do the later.
4504 */
4505 goto wait_other_side;
4506 }
4507
4508 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4509 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4510 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4511 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4512 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4513 goto wait_other_side;
4514 }
4515
4516 /* When we get here, it means that both the request and the
4517 * response have finished receiving. Depending on the connection
4518 * mode, we'll have to wait for the last bytes to leave in either
4519 * direction, and sometimes for a close to be effective.
4520 */
4521
4522 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4523 /* Server-close mode : shut read and wait for the request
4524 * side to close its output buffer. The caller will detect
4525 * when we're in DONE and the other is in CLOSED and will
4526 * catch that for the final cleanup.
4527 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4528 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4529 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4530 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4531 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4532 /* Option forceclose is set, or either side wants to close,
4533 * let's enforce it now that we're not expecting any new
4534 * data to come. The caller knows the session is complete
4535 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4536 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4537 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4538 channel_shutr_now(chn);
4539 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4540 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4541 }
4542 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4543 /* The last possible modes are keep-alive and tunnel. Since tunnel
4544 * mode does not set the body analyser, we can't reach this place
4545 * in tunnel mode, so we're left with keep-alive only.
4546 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4547 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4548 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4549 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4550 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4551 }
4552
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4553 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4554 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4555 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4556 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4557 goto http_msg_closing;
4558 }
4559 else {
4560 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4561 goto http_msg_closed;
4562 }
4563 }
4564 goto wait_other_side;
4565 }
4566
4567 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4568 http_msg_closing:
4569 /* nothing else to forward, just waiting for the output buffer
4570 * to be empty and for the shutw_now to take effect.
4571 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4572 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4573 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4574 goto http_msg_closed;
4575 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4576 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4577 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4578 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4579 if (objt_server(s->target))
4580 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4581 goto wait_other_side;
4582 }
4583 }
4584
4585 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4586 http_msg_closed:
4587 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4588 bi_erase(chn);
4589 channel_auto_close(chn);
4590 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4591 goto wait_other_side;
4592 }
4593
4594 wait_other_side:
4595 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4596 /* We force the response to leave immediately if we're waiting for the
4597 * other side, since there is no pending shutdown to push it out.
4598 */
4599 if (!channel_is_empty(chn))
4600 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4601 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4602}
4603
4604
4605/* Resync the request and response state machines. Return 1 if either state
4606 * changes.
4607 */
4608int http_resync_states(struct session *s)
4609{
4610 struct http_txn *txn = &s->txn;
4611 int old_req_state = txn->req.msg_state;
4612 int old_res_state = txn->rsp.msg_state;
4613
4614 http_silent_debug(__LINE__, s);
4615 http_sync_req_state(s);
4616 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4617 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4618 if (!http_sync_res_state(s))
4619 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4620 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4621 if (!http_sync_req_state(s))
4622 break;
4623 }
4624 http_silent_debug(__LINE__, s);
4625 /* OK, both state machines agree on a compatible state.
4626 * There are a few cases we're interested in :
4627 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4628 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4629 * directions, so let's simply disable both analysers.
4630 * - HTTP_MSG_CLOSED on the response only means we must abort the
4631 * request.
4632 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4633 * with server-close mode means we've completed one request and we
4634 * must re-initialize the server connection.
4635 */
4636
4637 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4638 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4639 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4640 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4641 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4642 channel_auto_close(s->req);
4643 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4644 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4645 channel_auto_close(s->rep);
4646 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4647 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4648 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
4649 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4650 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4651 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4652 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4653 channel_auto_close(s->rep);
4654 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4655 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4656 channel_abort(s->req);
4657 channel_auto_close(s->req);
4658 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4659 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4660 }
4661 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4662 txn->rsp.msg_state == HTTP_MSG_DONE &&
4663 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4664 /* server-close: terminate this server connection and
4665 * reinitialize a fresh-new transaction.
4666 */
4667 http_end_txn_clean_session(s);
4668 }
4669
4670 http_silent_debug(__LINE__, s);
4671 return txn->req.msg_state != old_req_state ||
4672 txn->rsp.msg_state != old_res_state;
4673}
4674
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4675/* This function is an analyser which forwards request body (including chunk
4676 * sizes if any). It is called as soon as we must forward, even if we forward
4677 * zero byte. The only situation where it must not be called is when we're in
4678 * tunnel mode and we want to forward till the close. It's used both to forward
4679 * remaining data and to resync after end of body. It expects the msg_state to
4680 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4681 * 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]4682 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4683 * bytes of pending data + the headers if not already done (between sol and sov).
4684 * 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]4685 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4686int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4687{
4688 struct http_txn *txn = &s->txn;
4689 struct http_msg *msg = &s->txn.req;
4690
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4691 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4692 return 0;
4693
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4694 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]4695 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4696 /* Output closed while we were sending data. We must abort and
4697 * wake the other side up.
4698 */
4699 msg->msg_state = HTTP_MSG_ERROR;
4700 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4701 return 1;
4702 }
4703
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4704 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4705 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4706
4707 /* Note that we don't have to send 100-continue back because we don't
4708 * need the data to complete our job, and it's up to the server to
4709 * decide whether to return 100, 417 or anything else in return of
4710 * an "Expect: 100-continue" header.
4711 */
4712
4713 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4714 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4715 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4716 * is still null. We must save the body in msg->next because it
4717 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4718 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4719 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4720
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4721 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4722 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4723 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4724 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4725 }
4726
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4727 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4728 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4729
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4730 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4731 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4732 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4733 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4734 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4735 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4736 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4737 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4738 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4739
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4740 if (msg->msg_state == HTTP_MSG_DATA) {
4741 /* must still forward */
4742 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4743 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4744
4745 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4746 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4747 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4748 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4749 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4750 }
4751 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4752 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4753 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4754 * TRAILERS state.
4755 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4756 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4757
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4758 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4759 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4760 else if (ret < 0) {
4761 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4762 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4763 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]4764 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4765 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4766 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4767 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4768 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4769 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4770 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4771
4772 if (ret == 0)
4773 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4774 else if (ret < 0) {
4775 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4776 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4777 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]4778 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4779 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4780 /* we're in MSG_CHUNK_SIZE now */
4781 }
4782 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4783 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4784
4785 if (ret == 0)
4786 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4787 else if (ret < 0) {
4788 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4789 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4790 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]4791 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4792 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4793 /* we're in HTTP_MSG_DONE now */
4794 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4795 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4796 int old_state = msg->msg_state;
4797
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4798 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4799 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4800 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4801 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4802 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4803 if (http_resync_states(s)) {
4804 /* some state changes occurred, maybe the analyser
4805 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4806 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4807 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4808 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4809 /* request errors are most likely due to
4810 * the server aborting the transfer.
4811 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4812 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4813 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4814 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4815 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4816 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4817 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4818 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4819 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4820
4821 /* If "option abortonclose" is set on the backend, we
4822 * want to monitor the client's connection and forward
4823 * any shutdown notification to the server, which will
4824 * decide whether to close or to go on processing the
4825 * request.
4826 */
4827 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4828 channel_auto_read(req);
4829 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4830 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4831 else if (s->txn.meth == HTTP_METH_POST) {
4832 /* POST requests may require to read extra CRLF
4833 * sent by broken browsers and which could cause
4834 * an RST to be sent upon close on some systems
4835 * (eg: Linux).
4836 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4837 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4838 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4839
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4840 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4841 }
4842 }
4843
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4844 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4845 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4846 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4847 if (!(s->flags & SN_ERR_MASK))
4848 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4849 if (!(s->flags & SN_FINST_MASK)) {
4850 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4851 s->flags |= SN_FINST_H;
4852 else
4853 s->flags |= SN_FINST_D;
4854 }
4855
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4856 s->fe->fe_counters.cli_aborts++;
4857 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4858 if (objt_server(s->target))
4859 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4860
4861 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4862 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4863
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4864 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4865 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4866 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4867
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4868 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4869 * 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]4870 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4871 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4872 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4873
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4874 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4875 * 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]4876 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4877 * modes are already handled by the stream sock layer. We must not do
4878 * this in content-length mode because it could present the MSG_MORE
4879 * flag with the last block of forwarded data, which would cause an
4880 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4881 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4882 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4883 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4884
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4885 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4886 return 0;
4887
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4888 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4889 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4890 if (s->listener->counters)
4891 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4892 return_bad_req_stats_ok:
4893 txn->req.msg_state = HTTP_MSG_ERROR;
4894 if (txn->status) {
4895 /* Note: we don't send any error if some data were already sent */
4896 stream_int_retnclose(req->prod, NULL);
4897 } else {
4898 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4899 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4900 }
4901 req->analysers = 0;
4902 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]4903
4904 if (!(s->flags & SN_ERR_MASK))
4905 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4906 if (!(s->flags & SN_FINST_MASK)) {
4907 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4908 s->flags |= SN_FINST_H;
4909 else
4910 s->flags |= SN_FINST_D;
4911 }
4912 return 0;
4913
4914 aborted_xfer:
4915 txn->req.msg_state = HTTP_MSG_ERROR;
4916 if (txn->status) {
4917 /* Note: we don't send any error if some data were already sent */
4918 stream_int_retnclose(req->prod, NULL);
4919 } else {
4920 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4921 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4922 }
4923 req->analysers = 0;
4924 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4925
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4926 s->fe->fe_counters.srv_aborts++;
4927 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4928 if (objt_server(s->target))
4929 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4930
4931 if (!(s->flags & SN_ERR_MASK))
4932 s->flags |= SN_ERR_SRVCL;
4933 if (!(s->flags & SN_FINST_MASK)) {
4934 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4935 s->flags |= SN_FINST_H;
4936 else
4937 s->flags |= SN_FINST_D;
4938 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4939 return 0;
4940}
4941
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4942/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4943 * processing can continue on next analysers, or zero if it either needs more
4944 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4945 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4946 * when it has nothing left to do, and may remove any analyser when it wants to
4947 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4948 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4949int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4950{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4951 struct http_txn *txn = &s->txn;
4952 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4953 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4954 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4955 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4956 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4957
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4958 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]4959 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4960 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4961 rep,
4962 rep->rex, rep->wex,
4963 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4964 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4965 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4966
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4967 /*
4968 * Now parse the partial (or complete) lines.
4969 * We will check the response syntax, and also join multi-line
4970 * headers. An index of all the lines will be elaborated while
4971 * parsing.
4972 *
4973 * For the parsing, we use a 28 states FSM.
4974 *
4975 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4976 * rep->buf->p = beginning of response
4977 * rep->buf->p + msg->eoh = end of processed headers / start of current one
4978 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4979 * msg->eol = end of current header or line (LF or CRLF)
4980 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4981 */
4982
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4983 /* There's a protected area at the end of the buffer for rewriting
4984 * purposes. We don't want to start to parse the request if the
4985 * protected area is affected, because we may have to move processed
4986 * data later, which is much more complicated.
4987 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4988 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]4989 if (unlikely(!channel_reserved(rep))) {
4990 /* some data has still not left the buffer, wake us once that's done */
4991 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
4992 goto abort_response;
4993 channel_dont_close(rep);
4994 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
4995 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]4996 }
4997
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]4998 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
4999 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5000 buffer_slow_realign(rep->buf);
5001
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5002 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5003 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5004 }
5005
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5006 /* 1: we might have to print this header in debug mode */
5007 if (unlikely((global.mode & MODE_DEBUG) &&
5008 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5009 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5010 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5011
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5012 sol = rep->buf->p;
5013 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5014 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5015
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5016 sol += hdr_idx_first_pos(&txn->hdr_idx);
5017 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5018
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5019 while (cur_idx) {
5020 eol = sol + txn->hdr_idx.v[cur_idx].len;
5021 debug_hdr("srvhdr", s, sol, eol);
5022 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5023 cur_idx = txn->hdr_idx.v[cur_idx].next;
5024 }
5025 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5026
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5027 /*
5028 * Now we quickly check if we have found a full valid response.
5029 * If not so, we check the FD and buffer states before leaving.
5030 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5031 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5032 * responses are checked first.
5033 *
5034 * Depending on whether the client is still there or not, we
5035 * may send an error response back or not. Note that normally
5036 * we should only check for HTTP status there, and check I/O
5037 * errors somewhere else.
5038 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5039
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5040 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5041 /* Invalid response */
5042 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5043 /* we detected a parsing error. We want to archive this response
5044 * in the dedicated proxy area for later troubleshooting.
5045 */
5046 hdr_response_bad:
5047 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5048 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]5049
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5050 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5051 if (objt_server(s->target)) {
5052 objt_server(s->target)->counters.failed_resp++;
5053 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5054 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5055 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5056 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5057 rep->analysers = 0;
5058 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5059 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5060 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5061 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5062
5063 if (!(s->flags & SN_ERR_MASK))
5064 s->flags |= SN_ERR_PRXCOND;
5065 if (!(s->flags & SN_FINST_MASK))
5066 s->flags |= SN_FINST_H;
5067
5068 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5069 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5070
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5071 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5072 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5073 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5074 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5075 goto hdr_response_bad;
5076 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5077
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5078 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5079 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5080 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5081 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5082
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5083 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5084 if (objt_server(s->target)) {
5085 objt_server(s->target)->counters.failed_resp++;
5086 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5087 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5088
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5089 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5090 rep->analysers = 0;
5091 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5092 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5093 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5094 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5095
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5096 if (!(s->flags & SN_ERR_MASK))
5097 s->flags |= SN_ERR_SRVCL;
5098 if (!(s->flags & SN_FINST_MASK))
5099 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5100 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5101 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5102
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5103 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5104 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5105 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5106 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5107
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5108 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5109 if (objt_server(s->target)) {
5110 objt_server(s->target)->counters.failed_resp++;
5111 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5112 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5113
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5114 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5115 rep->analysers = 0;
5116 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5117 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5118 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5119 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5120
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5121 if (!(s->flags & SN_ERR_MASK))
5122 s->flags |= SN_ERR_SRVTO;
5123 if (!(s->flags & SN_FINST_MASK))
5124 s->flags |= SN_FINST_H;
5125 return 0;
5126 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5127
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5128 /* client abort with an abortonclose */
5129 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5130 s->fe->fe_counters.cli_aborts++;
5131 s->be->be_counters.cli_aborts++;
5132 if (objt_server(s->target))
5133 objt_server(s->target)->counters.cli_aborts++;
5134
5135 rep->analysers = 0;
5136 channel_auto_close(rep);
5137
5138 txn->status = 400;
5139 bi_erase(rep);
5140 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5141
5142 if (!(s->flags & SN_ERR_MASK))
5143 s->flags |= SN_ERR_CLICL;
5144 if (!(s->flags & SN_FINST_MASK))
5145 s->flags |= SN_FINST_H;
5146
5147 /* process_session() will take care of the error */
5148 return 0;
5149 }
5150
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5151 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5152 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5153 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5154 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5155
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5156 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5157 if (objt_server(s->target)) {
5158 objt_server(s->target)->counters.failed_resp++;
5159 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5160 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5161
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5162 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5163 rep->analysers = 0;
5164 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5165 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5166 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5167 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5168
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5169 if (!(s->flags & SN_ERR_MASK))
5170 s->flags |= SN_ERR_SRVCL;
5171 if (!(s->flags & SN_FINST_MASK))
5172 s->flags |= SN_FINST_H;
5173 return 0;
5174 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5175
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5176 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5177 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5178 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5179 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5180
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5181 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5182 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5183 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5184
5185 if (!(s->flags & SN_ERR_MASK))
5186 s->flags |= SN_ERR_CLICL;
5187 if (!(s->flags & SN_FINST_MASK))
5188 s->flags |= SN_FINST_H;
5189
5190 /* process_session() will take care of the error */
5191 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5192 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5193
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5194 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5195 return 0;
5196 }
5197
5198 /* More interesting part now : we know that we have a complete
5199 * response which at least looks like HTTP. We have an indicator
5200 * of each header's length, so we can parse them quickly.
5201 */
5202
5203 if (unlikely(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 Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5205
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5206 /*
5207 * 1: get the status code
5208 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5209 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5210 if (n < 1 || n > 5)
5211 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5212 /* when the client triggers a 4xx from the server, it's most often due
5213 * to a missing object or permission. These events should be tracked
5214 * because if they happen often, it may indicate a brute force or a
5215 * vulnerability scan.
5216 */
5217 if (n == 4)
5218 session_inc_http_err_ctr(s);
5219
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5220 if (objt_server(s->target))
5221 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5222
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5223 /* check if the response is HTTP/1.1 or above */
5224 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5225 ((rep->buf->p[5] > '1') ||
5226 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5227 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5228
5229 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5230 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]5231
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5232 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5233 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5234
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5235 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]5236
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5237 /* Adjust server's health based on status code. Note: status codes 501
5238 * and 505 are triggered on demand by client request, so we must not
5239 * count them as server failures.
5240 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5241 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5242 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5243 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5244 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5245 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5246 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5247
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5248 /*
5249 * 2: check for cacheability.
5250 */
5251
5252 switch (txn->status) {
5253 case 200:
5254 case 203:
5255 case 206:
5256 case 300:
5257 case 301:
5258 case 410:
5259 /* RFC2616 @13.4:
5260 * "A response received with a status code of
5261 * 200, 203, 206, 300, 301 or 410 MAY be stored
5262 * by a cache (...) unless a cache-control
5263 * directive prohibits caching."
5264 *
5265 * RFC2616 @9.5: POST method :
5266 * "Responses to this method are not cacheable,
5267 * unless the response includes appropriate
5268 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5269 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5270 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5271 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5272 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5273 break;
5274 default:
5275 break;
5276 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5277
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5278 /*
5279 * 3: we may need to capture headers
5280 */
5281 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5282 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5283 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5284 txn->rsp.cap, s->fe->rsp_cap);
5285
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5286 /* 4: determine the transfer-length.
5287 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5288 * the presence of a message-body in a RESPONSE and its transfer length
5289 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5290 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5291 * All responses to the HEAD request method MUST NOT include a
5292 * message-body, even though the presence of entity-header fields
5293 * might lead one to believe they do. All 1xx (informational), 204
5294 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5295 * message-body. All other responses do include a message-body,
5296 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5297 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5298 * 1. Any response which "MUST NOT" include a message-body (such as the
5299 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5300 * always terminated by the first empty line after the header fields,
5301 * regardless of the entity-header fields present in the message.
5302 *
5303 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5304 * the "chunked" transfer-coding (Section 6.2) is used, the
5305 * transfer-length is defined by the use of this transfer-coding.
5306 * If a Transfer-Encoding header field is present and the "chunked"
5307 * transfer-coding is not present, the transfer-length is defined by
5308 * the sender closing the connection.
5309 *
5310 * 3. If a Content-Length header field is present, its decimal value in
5311 * OCTETs represents both the entity-length and the transfer-length.
5312 * If a message is received with both a Transfer-Encoding header
5313 * field and a Content-Length header field, the latter MUST be ignored.
5314 *
5315 * 4. If the message uses the media type "multipart/byteranges", and
5316 * the transfer-length is not otherwise specified, then this self-
5317 * delimiting media type defines the transfer-length. This media
5318 * type MUST NOT be used unless the sender knows that the recipient
5319 * can parse it; the presence in a request of a Range header with
5320 * multiple byte-range specifiers from a 1.1 client implies that the
5321 * client can parse multipart/byteranges responses.
5322 *
5323 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5324 */
5325
5326 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5327 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5328 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5329 * FIXME: should we parse anyway and return an error on chunked encoding ?
5330 */
5331 if (txn->meth == HTTP_METH_HEAD ||
5332 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5333 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5334 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5335 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5336 goto skip_content_length;
5337 }
5338
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5339 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5340 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5341 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5342 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5343 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5344 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5345 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5346 /* bad transfer-encoding (chunked followed by something else) */
5347 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5348 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5349 break;
5350 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5351 }
5352
5353 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5354 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5355 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5356 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5357 signed long long cl;
5358
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5359 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5360 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5361 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5362 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5363
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5364 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5365 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5366 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5367 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5368
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5369 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5370 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5371 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5372 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5373
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5374 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5375 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5376 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5377 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5378
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5379 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5380 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5381 }
5382
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5383 if (s->fe->comp || s->be->comp)
5384 select_compression_response_header(s, rep->buf);
5385
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5386 /* FIXME: we should also implement the multipart/byterange method.
5387 * For now on, we resort to close mode in this case (unknown length).
5388 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5389skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5390
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5391 /* end of job, return OK */
5392 rep->analysers &= ~an_bit;
5393 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5394 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5395 return 1;
5396}
5397
5398/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5399 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5400 * and updates t->rep->analysers. It might make sense to explode it into several
5401 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5402 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5403int 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]5404{
5405 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5406 struct http_msg *msg = &txn->rsp;
5407 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5408 struct cond_wordlist *wl;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5409 struct http_res_rule *http_res_last_rule = NULL;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5410
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5411 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]5412 now_ms, __FUNCTION__,
5413 t,
5414 rep,
5415 rep->rex, rep->wex,
5416 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5417 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5418 rep->analysers);
5419
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5420 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5421 return 0;
5422
5423 rep->analysers &= ~an_bit;
5424 rep->analyse_exp = TICK_ETERNITY;
5425
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5426 /* Now we have to check if we need to modify the Connection header.
5427 * This is more difficult on the response than it is on the request,
5428 * because we can have two different HTTP versions and we don't know
5429 * how the client will interprete a response. For instance, let's say
5430 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5431 * HTTP/1.1 response without any header. Maybe it will bound itself to
5432 * HTTP/1.0 because it only knows about it, and will consider the lack
5433 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5434 * the lack of header as a keep-alive. Thus we will use two flags
5435 * indicating how a request MAY be understood by the client. In case
5436 * of multiple possibilities, we'll fix the header to be explicit. If
5437 * ambiguous cases such as both close and keepalive are seen, then we
5438 * will fall back to explicit close. Note that we won't take risks with
5439 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5440 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5441 */
5442
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5443 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5444 txn->status == 101)) {
5445 /* Either we've established an explicit tunnel, or we're
5446 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5447 * to understand the next protocols. We have to switch to tunnel
5448 * mode, so that we transfer the request and responses then let
5449 * this protocol pass unmodified. When we later implement specific
5450 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5451 * header which contains information about that protocol for
5452 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5453 */
5454 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5455 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5456 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5457 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5458 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5459 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5460
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5461 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5462 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5463 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5464 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5465
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5466 /* now adjust header transformations depending on current state */
5467 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5468 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5469 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5470 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5471 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5472 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5473 else { /* SCL / KAL */
5474 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5475 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5476 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5477 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5478
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5479 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5480 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5481
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5482 /* Some keep-alive responses are converted to Server-close if
5483 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5484 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5485 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5486 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5487 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5488 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5489 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5490 }
5491
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5492 /* we want to have the response time before we start processing it */
5493 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
5494
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5495 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5496 /*
5497 * 3: we will have to evaluate the filters.
5498 * As opposed to version 1.2, now they will be evaluated in the
5499 * filters order and not in the header order. This means that
5500 * each filter has to be validated among all headers.
5501 *
5502 * Filters are tried with ->be first, then with ->fe if it is
5503 * different from ->be.
5504 */
5505
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5506 cur_proxy = t->be;
5507 while (1) {
5508 struct proxy *rule_set = cur_proxy;
5509
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5510 /* evaluate http-response rules */
5511 if (!http_res_last_rule)
5512 http_res_last_rule = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, t, txn);
5513
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5514 /* try headers filters */
5515 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5516 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5517 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5518 if (objt_server(t->target)) {
5519 objt_server(t->target)->counters.failed_resp++;
5520 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5521 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5522 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5523 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5524 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5525 txn->status = 502;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5526 t->logs.t_data = -1; /* was not a valid response */
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5527 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5528 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5529 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5530 if (!(t->flags & SN_ERR_MASK))
5531 t->flags |= SN_ERR_PRXCOND;
5532 if (!(t->flags & SN_FINST_MASK))
5533 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5534 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5535 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5536 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5537
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5538 /* has the response been denied ? */
5539 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5540 if (objt_server(t->target))
5541 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5542
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5543 t->be->be_counters.denied_resp++;
5544 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5545 if (t->listener->counters)
5546 t->listener->counters->denied_resp++;
5547
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5548 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5549 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5550
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5551 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5552 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5553 if (txn->status < 200)
5554 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5555 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5556 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]5557 ret = acl_pass(ret);
5558 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5559 ret = !ret;
5560 if (!ret)
5561 continue;
5562 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5563 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5564 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5565 }
5566
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5567 /* check whether we're already working on the frontend */
5568 if (cur_proxy == t->fe)
5569 break;
5570 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5571 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5572
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5573 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5574 * We may be facing a 100-continue response, in which case this
5575 * is not the right response, and we're waiting for the next one.
5576 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5577 * next one.
5578 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5579 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5580 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5581 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5582 msg->msg_state = HTTP_MSG_RPBEFORE;
5583 txn->status = 0;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5584 t->logs.t_data = -1; /* was not a response yet */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5585 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5586 return 1;
5587 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5588 else if (unlikely(txn->status < 200))
5589 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5590
5591 /* we don't have any 1xx status code now */
5592
5593 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5594 * 4: check for server cookie.
5595 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5596 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5597 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5598 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5599
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5600
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5601 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5602 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5603 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5604 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]5605 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5606
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5607 /*
5608 * 6: add server cookie in the response if needed
5609 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5610 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5611 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5612 (!(t->flags & SN_DIRECT) ||
5613 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5614 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5615 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5616 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5617 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5618 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5619 /* the server is known, it's not the one the client requested, or the
5620 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5621 * insert a set-cookie here, except if we want to insert only on POST
5622 * requests and this one isn't. Note that servers which don't have cookies
5623 * (eg: some backup servers) will return a full cookie removal request.
5624 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5625 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5626 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5627 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5628 t->be->cookie_name);
5629 }
5630 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5631 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]5632
5633 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5634 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5635 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5636 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5637 trash.len += 5;
5638
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5639 if (t->be->cookie_maxlife) {
5640 /* emit first_date, which is either the original one or
5641 * the current date.
5642 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5643 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5644 s30tob64(txn->cookie_first_date ?
5645 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5646 (date.tv_sec+3) >> 2, trash.str + trash.len);
5647 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5648 }
5649 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5650 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5651 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5652
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5653 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5654 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5655
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5656 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5657 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5658
5659 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5660 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5661
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5662 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]5663 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5664
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5665 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5666 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5667 /* the server did not change, only the date was updated */
5668 txn->flags |= TX_SCK_UPDATED;
5669 else
5670 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5671
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5672 /* Here, we will tell an eventual cache on the client side that we don't
5673 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5674 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5675 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5676 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5677 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5678
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5679 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5680
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5681 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5682 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5683 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5684 }
5685 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5686
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5687 /*
5688 * 7: check if result will be cacheable with a cookie.
5689 * We'll block the response if security checks have caught
5690 * nasty things such as a cacheable cookie.
5691 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5692 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5693 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5694 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5695
5696 /* we're in presence of a cacheable response containing
5697 * a set-cookie header. We'll block it as requested by
5698 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5699 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5700 if (objt_server(t->target))
5701 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5702
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5703 t->be->be_counters.denied_resp++;
5704 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5705 if (t->listener->counters)
5706 t->listener->counters->denied_resp++;
5707
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5708 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5709 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5710 send_log(t->be, LOG_ALERT,
5711 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5712 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5713 goto return_srv_prx_502;
5714 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5715
5716 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5717 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5718 * If an "Upgrade" token is found, the header is left untouched in order
5719 * not to have to deal with some client bugs : some of them fail an upgrade
5720 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5721 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5722 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5723 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5724 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5725 unsigned int want_flags = 0;
5726
5727 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5728 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5729 /* we want a keep-alive response here. Keep-alive header
5730 * required if either side is not 1.1.
5731 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5732 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5733 want_flags |= TX_CON_KAL_SET;
5734 }
5735 else {
5736 /* we want a close response here. Close header required if
5737 * the server is 1.1, regardless of the client.
5738 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5739 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5740 want_flags |= TX_CON_CLO_SET;
5741 }
5742
5743 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5744 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5745 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5746
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5747 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5748 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5749 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5750 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5751
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5752 /*************************************************************
5753 * OK, that's finished for the headers. We have done what we *
5754 * could. Let's switch to the DATA state. *
5755 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5756
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5757 /* if the user wants to log as soon as possible, without counting
5758 * bytes from the server, then this is the right moment. We have
5759 * to temporarily assign bytes_out to log what we currently have.
5760 */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]5761 if (!LIST_ISEMPTY(&t->fe->logformat) && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5762 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5763 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5764 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5765 t->logs.bytes_out = 0;
5766 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5767
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5768 /* Note: we must not try to cheat by jumping directly to DATA,
5769 * otherwise we would not let the client side wake up.
5770 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5771
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5772 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5773 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5774 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5775}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5776
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5777/* This function is an analyser which forwards response body (including chunk
5778 * sizes if any). It is called as soon as we must forward, even if we forward
5779 * zero byte. The only situation where it must not be called is when we're in
5780 * tunnel mode and we want to forward till the close. It's used both to forward
5781 * remaining data and to resync after end of body. It expects the msg_state to
5782 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5783 * 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]5784 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5785 * bytes of pending data + the headers if not already done (between sol and sov).
5786 * 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]5787 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5788int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5789{
5790 struct http_txn *txn = &s->txn;
5791 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5792 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5793 static struct buffer *tmpbuf = NULL;
5794 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5795 int consumed_data = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5796 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5797
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5798 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5799 return 0;
5800
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5801 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]5802 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5803 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5804 /* Output closed while we were sending data. We must abort and
5805 * wake the other side up.
5806 */
5807 msg->msg_state = HTTP_MSG_ERROR;
5808 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5809 return 1;
5810 }
5811
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5812 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5813 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5814
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5815 /* this is the first time we need the compression buffer */
5816 if (s->comp_algo != NULL && tmpbuf == NULL) {
5817 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5818 goto aborted_xfer; /* no memory */
5819 }
5820
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5821 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5822 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5823 * rep->buf.p still points to the beginning of the message and msg->sol
5824 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5825 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5826 channel_forward(res, msg->sov);
5827 msg->next = 0;
5828 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5829
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5830 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5831 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5832 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5833 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5834 }
5835
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5836 if (s->comp_algo != NULL) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5837 ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5838 if (ret < 0)
5839 goto missing_data; /* not enough spaces in buffers */
5840 compressing = 1;
5841 }
5842
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5843 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5844 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5845 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5846 if (s->comp_algo == NULL) {
5847 bytes = msg->sov - msg->sol;
5848 if (msg->chunk_len || bytes) {
5849 msg->sol = msg->sov;
5850 msg->next -= bytes; /* will be forwarded */
5851 msg->chunk_len += bytes;
5852 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5853 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5854 }
5855
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5856 switch (msg->msg_state - HTTP_MSG_DATA) {
5857 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5858 if (compressing) {
5859 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
5860 if (ret < 0)
5861 goto aborted_xfer;
5862 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5863
5864 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5865 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5866
5867 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5868 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5869 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5870 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5871 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5872 if (compressing && consumed_data) {
5873 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5874 compressing = 0;
5875 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5876 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5877 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5878 /* fall through for HTTP_MSG_CHUNK_CRLF */
5879
5880 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
5881 /* we want the CRLF after the data */
5882
5883 ret = http_skip_chunk_crlf(msg);
5884 if (ret == 0)
5885 goto missing_data;
5886 else if (ret < 0) {
5887 if (msg->err_pos >= 0)
5888 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
5889 goto return_bad_res;
5890 }
5891 /* skipping data in buffer for compression */
5892 if (compressing) {
5893 b_adv(res->buf, msg->next);
5894 msg->next = 0;
5895 msg->sov = 0;
5896 msg->sol = 0;
5897 }
5898 /* we're in MSG_CHUNK_SIZE now, fall through */
5899
5900 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5901 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5902 * set ->sov and ->next to point to the body and switch to DATA or
5903 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5904 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5905
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5906 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5907 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5908 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5909 else if (ret < 0) {
5910 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5911 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]5912 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5913 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5914 if (compressing) {
5915 if (likely(msg->chunk_len > 0)) {
5916 /* skipping data if we are in compression mode */
5917 b_adv(res->buf, msg->next);
5918 msg->next = 0;
5919 msg->sov = 0;
5920 msg->sol = 0;
5921 } else {
5922 if (consumed_data) {
5923 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5924 compressing = 0;
5925 }
5926 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5927 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]5928 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5929 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5930
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5931 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
5932 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5933 if (ret == 0)
5934 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5935 else if (ret < 0) {
5936 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5937 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]5938 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5939 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]5940 if (s->comp_algo != NULL) {
5941 /* forwarding trailers */
5942 channel_forward(res, msg->next);
5943 msg->next = 0;
5944 }
Willy Tarreau2d43e182013-04-03 00:22:25 +0200[diff] [blame]5945 /* we're in HTTP_MSG_DONE now, but we might still have
5946 * some data pending, so let's loop over once.
5947 */
5948 break;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5949
5950 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5951 /* other states, DONE...TUNNEL */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5952
5953 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5954 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5955 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5956 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5957 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5958 if (http_resync_states(s)) {
5959 http_silent_debug(__LINE__, s);
5960 /* some state changes occurred, maybe the analyser
5961 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5962 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5963 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5964 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5965 /* response errors are most likely due to
5966 * the client aborting the transfer.
5967 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5968 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5969 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5970 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5971 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5972 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5973 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5974 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5975 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5976 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5977 }
5978 }
5979
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5980 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5981 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5982 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
5983 compressing = 0;
5984 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5985
5986 if (res->flags & CF_SHUTW)
5987 goto aborted_xfer;
5988
5989 /* stop waiting for data if the input is closed before the end. If the
5990 * client side was already closed, it means that the client has aborted,
5991 * so we don't want to count this as a server abort. Otherwise it's a
5992 * server abort.
5993 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5994 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5995 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
5996 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]5997 if (!(s->flags & SN_ERR_MASK))
5998 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5999 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6000 if (objt_server(s->target))
6001 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6002 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6003 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6004
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6005 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6006 if (!s->req->analysers)
6007 goto return_bad_res;
6008
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]6009 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6010 if (s->comp_algo == NULL) {
6011 bytes = msg->sov - msg->sol;
6012 if (msg->chunk_len || bytes) {
6013 msg->sol = msg->sov;
6014 msg->next -= bytes; /* will be forwarded */
6015 msg->chunk_len += bytes;
6016 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6017 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6018 }
6019
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6020 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6021 * 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]6022 * Similarly, with keep-alive on the client side, we don't want to forward a
6023 * close.
6024 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6025 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6026 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6027 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6028 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6029
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6030 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6031 * 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]6032 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6033 * modes are already handled by the stream sock layer. We must not do
6034 * this in content-length mode because it could present the MSG_MORE
6035 * flag with the last block of forwarded data, which would cause an
6036 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6037 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6038 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6039 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6040
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6041 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6042 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6043 return 0;
6044
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6045 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6046 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6047 if (objt_server(s->target))
6048 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6049
6050 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6051 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6052 /* don't send any error message as we're in the body */
6053 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6054 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6055 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]6056 if (objt_server(s->target))
6057 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6058
6059 if (!(s->flags & SN_ERR_MASK))
6060 s->flags |= SN_ERR_PRXCOND;
6061 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6062 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6063 return 0;
6064
6065 aborted_xfer:
6066 txn->rsp.msg_state = HTTP_MSG_ERROR;
6067 /* don't send any error message as we're in the body */
6068 stream_int_retnclose(res->cons, NULL);
6069 res->analysers = 0;
6070 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6071
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6072 s->fe->fe_counters.cli_aborts++;
6073 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6074 if (objt_server(s->target))
6075 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6076
6077 if (!(s->flags & SN_ERR_MASK))
6078 s->flags |= SN_ERR_CLICL;
6079 if (!(s->flags & SN_FINST_MASK))
6080 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6081 return 0;
6082}
6083
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6084/* Iterate the same filter through all request headers.
6085 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6086 * Since it can manage the switch to another backend, it updates the per-proxy
6087 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6088 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6089int 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]6090{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6091 char term;
6092 char *cur_ptr, *cur_end, *cur_next;
6093 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6094 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6095 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6096 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6097
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6098 last_hdr = 0;
6099
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6100 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6101 old_idx = 0;
6102
6103 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6104 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6105 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6106 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6107 (exp->action == ACT_ALLOW ||
6108 exp->action == ACT_DENY ||
6109 exp->action == ACT_TARPIT))
6110 return 0;
6111
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6112 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6113 if (!cur_idx)
6114 break;
6115
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6116 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6117 cur_ptr = cur_next;
6118 cur_end = cur_ptr + cur_hdr->len;
6119 cur_next = cur_end + cur_hdr->cr + 1;
6120
6121 /* Now we have one header between cur_ptr and cur_end,
6122 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6123 */
6124
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6125 /* The annoying part is that pattern matching needs
6126 * that we modify the contents to null-terminate all
6127 * strings before testing them.
6128 */
6129
6130 term = *cur_end;
6131 *cur_end = '\0';
6132
6133 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6134 switch (exp->action) {
6135 case ACT_SETBE:
6136 /* It is not possible to jump a second time.
6137 * FIXME: should we return an HTTP/500 here so that
6138 * the admin knows there's a problem ?
6139 */
6140 if (t->be != t->fe)
6141 break;
6142
6143 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6144 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6145 last_hdr = 1;
6146 break;
6147
6148 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6149 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6150 last_hdr = 1;
6151 break;
6152
6153 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6154 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6155 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6156 break;
6157
6158 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6159 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6160 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6161 break;
6162
6163 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6164 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6165 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6166 /* FIXME: if the user adds a newline in the replacement, the
6167 * index will not be recalculated for now, and the new line
6168 * will not be counted as a new header.
6169 */
6170
6171 cur_end += delta;
6172 cur_next += delta;
6173 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6174 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6175 break;
6176
6177 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6178 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6179 cur_next += delta;
6180
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6181 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6182 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6183 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6184 cur_hdr->len = 0;
6185 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6186 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6187 break;
6188
6189 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6190 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6191 if (cur_end)
6192 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6193
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6194 /* keep the link from this header to next one in case of later
6195 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6196 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6197 old_idx = cur_idx;
6198 }
6199 return 0;
6200}
6201
6202
6203/* Apply the filter to the request line.
6204 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6205 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6206 * Since it can manage the switch to another backend, it updates the per-proxy
6207 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6208 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6209int 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]6210{
6211 char term;
6212 char *cur_ptr, *cur_end;
6213 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6214 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6215 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6216
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6217 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6218 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6219 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6220 (exp->action == ACT_ALLOW ||
6221 exp->action == ACT_DENY ||
6222 exp->action == ACT_TARPIT))
6223 return 0;
6224 else if (exp->action == ACT_REMOVE)
6225 return 0;
6226
6227 done = 0;
6228
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6229 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6230 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6231
6232 /* Now we have the request line between cur_ptr and cur_end */
6233
6234 /* The annoying part is that pattern matching needs
6235 * that we modify the contents to null-terminate all
6236 * strings before testing them.
6237 */
6238
6239 term = *cur_end;
6240 *cur_end = '\0';
6241
6242 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6243 switch (exp->action) {
6244 case ACT_SETBE:
6245 /* It is not possible to jump a second time.
6246 * FIXME: should we return an HTTP/500 here so that
6247 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6248 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6249 if (t->be != t->fe)
6250 break;
6251
6252 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6253 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6254 done = 1;
6255 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6256
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6257 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6258 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6259 done = 1;
6260 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6261
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6262 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6263 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6264 done = 1;
6265 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6266
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6267 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6268 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6269 done = 1;
6270 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6271
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6272 case ACT_REPLACE:
6273 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6274 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6275 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6276 /* FIXME: if the user adds a newline in the replacement, the
6277 * index will not be recalculated for now, and the new line
6278 * will not be counted as a new header.
6279 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6280
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6281 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6282 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6283 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6284 HTTP_MSG_RQMETH,
6285 cur_ptr, cur_end + 1,
6286 NULL, NULL);
6287 if (unlikely(!cur_end))
6288 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6289
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6290 /* we have a full request and we know that we have either a CR
6291 * or an LF at <ptr>.
6292 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6293 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6294 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]6295 /* there is no point trying this regex on headers */
6296 return 1;
6297 }
6298 }
6299 *cur_end = term; /* restore the string terminator */
6300 return done;
6301}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6302
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6303
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6304
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6305/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6306 * 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]6307 * 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]6308 * unparsable request. Since it can manage the switch to another backend, it
6309 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6310 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6311int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6312{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6313 struct http_txn *txn = &s->txn;
6314 struct hdr_exp *exp;
6315
6316 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6317 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6318
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6319 /*
6320 * The interleaving of transformations and verdicts
6321 * makes it difficult to decide to continue or stop
6322 * the evaluation.
6323 */
6324
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6325 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6326 break;
6327
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6328 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6329 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6330 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6331 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6332
6333 /* if this filter had a condition, evaluate it now and skip to
6334 * next filter if the condition does not match.
6335 */
6336 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6337 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]6338 ret = acl_pass(ret);
6339 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6340 ret = !ret;
6341
6342 if (!ret)
6343 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6344 }
6345
6346 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6347 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6348 if (unlikely(ret < 0))
6349 return -1;
6350
6351 if (likely(ret == 0)) {
6352 /* The filter did not match the request, it can be
6353 * iterated through all headers.
6354 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6355 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6356 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6357 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6358 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6359}
6360
6361
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6362
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6363/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6364 * Try to retrieve the server associated to the appsession.
6365 * If the server is found, it's assigned to the session.
6366 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6367void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6368 struct http_txn *txn = &t->txn;
6369 appsess *asession = NULL;
6370 char *sessid_temp = NULL;
6371
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6372 if (len > t->be->appsession_len) {
6373 len = t->be->appsession_len;
6374 }
6375
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6376 if (t->be->options2 & PR_O2_AS_REQL) {
6377 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6378 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6379 /* 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]6380 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6381 }
6382
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6383 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6384 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6385 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6386 return;
6387 }
6388
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6389 memcpy(txn->sessid, buf, len);
6390 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6391 }
6392
6393 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6394 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6395 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6396 return;
6397 }
6398
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6399 memcpy(sessid_temp, buf, len);
6400 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6401
6402 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6403 /* free previously allocated memory */
6404 pool_free2(apools.sessid, sessid_temp);
6405
6406 if (asession != NULL) {
6407 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6408 if (!(t->be->options2 & PR_O2_AS_REQL))
6409 asession->request_count++;
6410
6411 if (asession->serverid != NULL) {
6412 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6413
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6414 while (srv) {
6415 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6416 if ((srv->state & SRV_RUNNING) ||
6417 (t->be->options & PR_O_PERSIST) ||
6418 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6419 /* we found the server and it's usable */
6420 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6421 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6422 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6423 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6424
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6425 break;
6426 } else {
6427 txn->flags &= ~TX_CK_MASK;
6428 txn->flags |= TX_CK_DOWN;
6429 }
6430 }
6431 srv = srv->next;
6432 }
6433 }
6434 }
6435}
6436
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6437/* Find the end of a cookie value contained between <s> and <e>. It works the
6438 * same way as with headers above except that the semi-colon also ends a token.
6439 * See RFC2965 for more information. Note that it requires a valid header to
6440 * return a valid result.
6441 */
6442char *find_cookie_value_end(char *s, const char *e)
6443{
6444 int quoted, qdpair;
6445
6446 quoted = qdpair = 0;
6447 for (; s < e; s++) {
6448 if (qdpair) qdpair = 0;
6449 else if (quoted) {
6450 if (*s == '\\') qdpair = 1;
6451 else if (*s == '"') quoted = 0;
6452 }
6453 else if (*s == '"') quoted = 1;
6454 else if (*s == ',' || *s == ';') return s;
6455 }
6456 return s;
6457}
6458
6459/* Delete a value in a header between delimiters <from> and <next> in buffer
6460 * <buf>. The number of characters displaced is returned, and the pointer to
6461 * the first delimiter is updated if required. The function tries as much as
6462 * possible to respect the following principles :
6463 * - replace <from> delimiter by the <next> one unless <from> points to a
6464 * colon, in which case <next> is simply removed
6465 * - set exactly one space character after the new first delimiter, unless
6466 * there are not enough characters in the block being moved to do so.
6467 * - remove unneeded spaces before the previous delimiter and after the new
6468 * one.
6469 *
6470 * It is the caller's responsibility to ensure that :
6471 * - <from> points to a valid delimiter or the colon ;
6472 * - <next> points to a valid delimiter or the final CR/LF ;
6473 * - there are non-space chars before <from> ;
6474 * - there is a CR/LF at or after <next>.
6475 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6476int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6477{
6478 char *prev = *from;
6479
6480 if (*prev == ':') {
6481 /* We're removing the first value, preserve the colon and add a
6482 * space if possible.
6483 */
6484 if (!http_is_crlf[(unsigned char)*next])
6485 next++;
6486 prev++;
6487 if (prev < next)
6488 *prev++ = ' ';
6489
6490 while (http_is_spht[(unsigned char)*next])
6491 next++;
6492 } else {
6493 /* Remove useless spaces before the old delimiter. */
6494 while (http_is_spht[(unsigned char)*(prev-1)])
6495 prev--;
6496 *from = prev;
6497
6498 /* copy the delimiter and if possible a space if we're
6499 * not at the end of the line.
6500 */
6501 if (!http_is_crlf[(unsigned char)*next]) {
6502 *prev++ = *next++;
6503 if (prev + 1 < next)
6504 *prev++ = ' ';
6505 while (http_is_spht[(unsigned char)*next])
6506 next++;
6507 }
6508 }
6509 return buffer_replace2(buf, prev, next, NULL, 0);
6510}
6511
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6512/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6513 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6514 * desirable to call it only when needed. This code is quite complex because
6515 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6516 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6517 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6518void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6519{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6520 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6521 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6522 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6523 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6524 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6525
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6526 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6527 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6528 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6529
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6530 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6531 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6532 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6533
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6534 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6535 hdr_beg = hdr_next;
6536 hdr_end = hdr_beg + cur_hdr->len;
6537 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6538
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6539 /* We have one full header between hdr_beg and hdr_end, and the
6540 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6541 * "Cookie:" headers.
6542 */
6543
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6544 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6545 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6546 old_idx = cur_idx;
6547 continue;
6548 }
6549
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6550 del_from = NULL; /* nothing to be deleted */
6551 preserve_hdr = 0; /* assume we may kill the whole header */
6552
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6553 /* Now look for cookies. Conforming to RFC2109, we have to support
6554 * attributes whose name begin with a '$', and associate them with
6555 * the right cookie, if we want to delete this cookie.
6556 * So there are 3 cases for each cookie read :
6557 * 1) it's a special attribute, beginning with a '$' : ignore it.
6558 * 2) it's a server id cookie that we *MAY* want to delete : save
6559 * some pointers on it (last semi-colon, beginning of cookie...)
6560 * 3) it's an application cookie : we *MAY* have to delete a previous
6561 * "special" cookie.
6562 * At the end of loop, if a "special" cookie remains, we may have to
6563 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6564 * *MUST* delete it.
6565 *
6566 * Note: RFC2965 is unclear about the processing of spaces around
6567 * the equal sign in the ATTR=VALUE form. A careful inspection of
6568 * the RFC explicitly allows spaces before it, and not within the
6569 * tokens (attrs or values). An inspection of RFC2109 allows that
6570 * too but section 10.1.3 lets one think that spaces may be allowed
6571 * after the equal sign too, resulting in some (rare) buggy
6572 * implementations trying to do that. So let's do what servers do.
6573 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6574 * allowed quoted strings in values, with any possible character
6575 * after a backslash, including control chars and delimitors, which
6576 * causes parsing to become ambiguous. Browsers also allow spaces
6577 * within values even without quotes.
6578 *
6579 * We have to keep multiple pointers in order to support cookie
6580 * removal at the beginning, middle or end of header without
6581 * corrupting the header. All of these headers are valid :
6582 *
6583 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6584 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6585 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6586 * | | | | | | | | |
6587 * | | | | | | | | hdr_end <--+
6588 * | | | | | | | +--> next
6589 * | | | | | | +----> val_end
6590 * | | | | | +-----------> val_beg
6591 * | | | | +--------------> equal
6592 * | | | +----------------> att_end
6593 * | | +---------------------> att_beg
6594 * | +--------------------------> prev
6595 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6596 */
6597
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6598 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6599 /* Iterate through all cookies on this line */
6600
6601 /* find att_beg */
6602 att_beg = prev + 1;
6603 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6604 att_beg++;
6605
6606 /* find att_end : this is the first character after the last non
6607 * space before the equal. It may be equal to hdr_end.
6608 */
6609 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6610
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6611 while (equal < hdr_end) {
6612 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6613 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6614 if (http_is_spht[(unsigned char)*equal++])
6615 continue;
6616 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6617 }
6618
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6619 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6620 * is between <att_beg> and <equal>, both may be identical.
6621 */
6622
6623 /* look for end of cookie if there is an equal sign */
6624 if (equal < hdr_end && *equal == '=') {
6625 /* look for the beginning of the value */
6626 val_beg = equal + 1;
6627 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6628 val_beg++;
6629
6630 /* find the end of the value, respecting quotes */
6631 next = find_cookie_value_end(val_beg, hdr_end);
6632
6633 /* make val_end point to the first white space or delimitor after the value */
6634 val_end = next;
6635 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6636 val_end--;
6637 } else {
6638 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6639 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6640
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6641 /* We have nothing to do with attributes beginning with '$'. However,
6642 * they will automatically be removed if a header before them is removed,
6643 * since they're supposed to be linked together.
6644 */
6645 if (*att_beg == '$')
6646 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6647
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6648 /* Ignore cookies with no equal sign */
6649 if (equal == next) {
6650 /* This is not our cookie, so we must preserve it. But if we already
6651 * scheduled another cookie for removal, we cannot remove the
6652 * complete header, but we can remove the previous block itself.
6653 */
6654 preserve_hdr = 1;
6655 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6656 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6657 val_end += delta;
6658 next += delta;
6659 hdr_end += delta;
6660 hdr_next += delta;
6661 cur_hdr->len += delta;
6662 http_msg_move_end(&txn->req, delta);
6663 prev = del_from;
6664 del_from = NULL;
6665 }
6666 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6667 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6668
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6669 /* if there are spaces around the equal sign, we need to
6670 * strip them otherwise we'll get trouble for cookie captures,
6671 * or even for rewrites. Since this happens extremely rarely,
6672 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6673 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6674 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6675 int stripped_before = 0;
6676 int stripped_after = 0;
6677
6678 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6679 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6680 equal += stripped_before;
6681 val_beg += stripped_before;
6682 }
6683
6684 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6685 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6686 val_beg += stripped_after;
6687 stripped_before += stripped_after;
6688 }
6689
6690 val_end += stripped_before;
6691 next += stripped_before;
6692 hdr_end += stripped_before;
6693 hdr_next += stripped_before;
6694 cur_hdr->len += stripped_before;
6695 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6696 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6697 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6698
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6699 /* First, let's see if we want to capture this cookie. We check
6700 * that we don't already have a client side cookie, because we
6701 * can only capture one. Also as an optimisation, we ignore
6702 * cookies shorter than the declared name.
6703 */
6704 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6705 (val_end - att_beg >= t->fe->capture_namelen) &&
6706 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6707 int log_len = val_end - att_beg;
6708
6709 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6710 Alert("HTTP logging : out of memory.\n");
6711 } else {
6712 if (log_len > t->fe->capture_len)
6713 log_len = t->fe->capture_len;
6714 memcpy(txn->cli_cookie, att_beg, log_len);
6715 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6716 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6717 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6718
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6719 /* Persistence cookies in passive, rewrite or insert mode have the
6720 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6721 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6722 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6723 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6724 * For cookies in prefix mode, the form is :
6725 *
6726 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6727 */
6728 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6729 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6730 struct server *srv = t->be->srv;
6731 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6732
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6733 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6734 * have the server ID between val_beg and delim, and the original cookie between
6735 * delim+1 and val_end. Otherwise, delim==val_end :
6736 *
6737 * Cookie: NAME=SRV; # in all but prefix modes
6738 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6739 * | || || | |+-> next
6740 * | || || | +--> val_end
6741 * | || || +---------> delim
6742 * | || |+------------> val_beg
6743 * | || +-------------> att_end = equal
6744 * | |+-----------------> att_beg
6745 * | +------------------> prev
6746 * +-------------------------> hdr_beg
6747 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6748
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6749 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6750 for (delim = val_beg; delim < val_end; delim++)
6751 if (*delim == COOKIE_DELIM)
6752 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6753 } else {
6754 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6755 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6756 /* Now check if the cookie contains a date field, which would
6757 * appear after a vertical bar ('|') just after the server name
6758 * and before the delimiter.
6759 */
6760 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6761 if (vbar1) {
6762 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6763 * right is the last seen date. It is a base64 encoded
6764 * 30-bit value representing the UNIX date since the
6765 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6766 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6767 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6768 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6769 if (val_end - vbar1 >= 5) {
6770 val = b64tos30(vbar1);
6771 if (val > 0)
6772 txn->cookie_last_date = val << 2;
6773 }
6774 /* look for a second vertical bar */
6775 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6776 if (vbar1 && (val_end - vbar1 > 5)) {
6777 val = b64tos30(vbar1 + 1);
6778 if (val > 0)
6779 txn->cookie_first_date = val << 2;
6780 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6781 }
6782 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6783
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6784 /* if the cookie has an expiration date and the proxy wants to check
6785 * it, then we do that now. We first check if the cookie is too old,
6786 * then only if it has expired. We detect strict overflow because the
6787 * time resolution here is not great (4 seconds). Cookies with dates
6788 * in the future are ignored if their offset is beyond one day. This
6789 * allows an admin to fix timezone issues without expiring everyone
6790 * and at the same time avoids keeping unwanted side effects for too
6791 * long.
6792 */
6793 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6794 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6795 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6796 txn->flags &= ~TX_CK_MASK;
6797 txn->flags |= TX_CK_OLD;
6798 delim = val_beg; // let's pretend we have not found the cookie
6799 txn->cookie_first_date = 0;
6800 txn->cookie_last_date = 0;
6801 }
6802 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6803 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6804 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6805 txn->flags &= ~TX_CK_MASK;
6806 txn->flags |= TX_CK_EXPIRED;
6807 delim = val_beg; // let's pretend we have not found the cookie
6808 txn->cookie_first_date = 0;
6809 txn->cookie_last_date = 0;
6810 }
6811
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6812 /* Here, we'll look for the first running server which supports the cookie.
6813 * This allows to share a same cookie between several servers, for example
6814 * to dedicate backup servers to specific servers only.
6815 * However, to prevent clients from sticking to cookie-less backup server
6816 * when they have incidentely learned an empty cookie, we simply ignore
6817 * empty cookies and mark them as invalid.
6818 * The same behaviour is applied when persistence must be ignored.
6819 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6820 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6821 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6822
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6823 while (srv) {
6824 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6825 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6826 if ((srv->state & SRV_RUNNING) ||
6827 (t->be->options & PR_O_PERSIST) ||
6828 (t->flags & SN_FORCE_PRST)) {
6829 /* we found the server and we can use it */
6830 txn->flags &= ~TX_CK_MASK;
6831 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6832 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6833 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6834 break;
6835 } else {
6836 /* we found a server, but it's down,
6837 * mark it as such and go on in case
6838 * another one is available.
6839 */
6840 txn->flags &= ~TX_CK_MASK;
6841 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6842 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6843 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6844 srv = srv->next;
6845 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6846
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6847 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6848 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6849 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6850 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6851 txn->flags |= TX_CK_UNUSED;
6852 else
6853 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6854 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6855
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6856 /* depending on the cookie mode, we may have to either :
6857 * - delete the complete cookie if we're in insert+indirect mode, so that
6858 * the server never sees it ;
6859 * - remove the server id from the cookie value, and tag the cookie as an
6860 * application cookie so that it does not get accidentely removed later,
6861 * if we're in cookie prefix mode
6862 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6863 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6864 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6865
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6866 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6867 val_end += delta;
6868 next += delta;
6869 hdr_end += delta;
6870 hdr_next += delta;
6871 cur_hdr->len += delta;
6872 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6873
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6874 del_from = NULL;
6875 preserve_hdr = 1; /* we want to keep this cookie */
6876 }
6877 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6878 (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]6879 del_from = prev;
6880 }
6881 } else {
6882 /* This is not our cookie, so we must preserve it. But if we already
6883 * scheduled another cookie for removal, we cannot remove the
6884 * complete header, but we can remove the previous block itself.
6885 */
6886 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6887
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6888 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6889 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6890 if (att_beg >= del_from)
6891 att_beg += delta;
6892 if (att_end >= del_from)
6893 att_end += delta;
6894 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6895 val_end += delta;
6896 next += delta;
6897 hdr_end += delta;
6898 hdr_next += delta;
6899 cur_hdr->len += delta;
6900 http_msg_move_end(&txn->req, delta);
6901 prev = del_from;
6902 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6903 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6904 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6905
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6906 /* Look for the appsession cookie unless persistence must be ignored */
6907 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6908 int cmp_len, value_len;
6909 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6910
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6911 if (t->be->options2 & PR_O2_AS_PFX) {
6912 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6913 value_begin = att_beg + t->be->appsession_name_len;
6914 value_len = val_end - att_beg - t->be->appsession_name_len;
6915 } else {
6916 cmp_len = att_end - att_beg;
6917 value_begin = val_beg;
6918 value_len = val_end - val_beg;
6919 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6920
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6921 /* let's see if the cookie is our appcookie */
6922 if (cmp_len == t->be->appsession_name_len &&
6923 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6924 manage_client_side_appsession(t, value_begin, value_len);
6925 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6926 }
6927
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6928 /* continue with next cookie on this header line */
6929 att_beg = next;
6930 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6931
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6932 /* There are no more cookies on this line.
6933 * We may still have one (or several) marked for deletion at the
6934 * end of the line. We must do this now in two ways :
6935 * - if some cookies must be preserved, we only delete from the
6936 * mark to the end of line ;
6937 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6938 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6939 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6940 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6941 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6942 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6943 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6944 cur_hdr->len += delta;
6945 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6946 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6947
6948 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6949 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6950 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6951 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6952 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6953 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6954 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6955 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6956 }
6957
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6958 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6959 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6960 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6961}
6962
6963
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6964/* Iterate the same filter through all response headers contained in <rtr>.
6965 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6966 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6967int 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]6968{
6969 char term;
6970 char *cur_ptr, *cur_end, *cur_next;
6971 int cur_idx, old_idx, last_hdr;
6972 struct http_txn *txn = &t->txn;
6973 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6974 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6975
6976 last_hdr = 0;
6977
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6978 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6979 old_idx = 0;
6980
6981 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6982 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6983 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6984 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6985 (exp->action == ACT_ALLOW ||
6986 exp->action == ACT_DENY))
6987 return 0;
6988
6989 cur_idx = txn->hdr_idx.v[old_idx].next;
6990 if (!cur_idx)
6991 break;
6992
6993 cur_hdr = &txn->hdr_idx.v[cur_idx];
6994 cur_ptr = cur_next;
6995 cur_end = cur_ptr + cur_hdr->len;
6996 cur_next = cur_end + cur_hdr->cr + 1;
6997
6998 /* Now we have one header between cur_ptr and cur_end,
6999 * and the next header starts at cur_next.
7000 */
7001
7002 /* The annoying part is that pattern matching needs
7003 * that we modify the contents to null-terminate all
7004 * strings before testing them.
7005 */
7006
7007 term = *cur_end;
7008 *cur_end = '\0';
7009
7010 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7011 switch (exp->action) {
7012 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7013 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7014 last_hdr = 1;
7015 break;
7016
7017 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7018 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7019 last_hdr = 1;
7020 break;
7021
7022 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7023 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7024 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7025 /* FIXME: if the user adds a newline in the replacement, the
7026 * index will not be recalculated for now, and the new line
7027 * will not be counted as a new header.
7028 */
7029
7030 cur_end += delta;
7031 cur_next += delta;
7032 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7033 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7034 break;
7035
7036 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7037 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7038 cur_next += delta;
7039
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7040 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7041 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7042 txn->hdr_idx.used--;
7043 cur_hdr->len = 0;
7044 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7045 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7046 break;
7047
7048 }
7049 }
7050 if (cur_end)
7051 *cur_end = term; /* restore the string terminator */
7052
7053 /* keep the link from this header to next one in case of later
7054 * removal of next header.
7055 */
7056 old_idx = cur_idx;
7057 }
7058 return 0;
7059}
7060
7061
7062/* Apply the filter to the status line in the response buffer <rtr>.
7063 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7064 * or -1 if a replacement resulted in an invalid status line.
7065 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7066int 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]7067{
7068 char term;
7069 char *cur_ptr, *cur_end;
7070 int done;
7071 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7072 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7073
7074
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7075 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7076 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7077 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7078 (exp->action == ACT_ALLOW ||
7079 exp->action == ACT_DENY))
7080 return 0;
7081 else if (exp->action == ACT_REMOVE)
7082 return 0;
7083
7084 done = 0;
7085
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7086 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7087 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7088
7089 /* Now we have the status line between cur_ptr and cur_end */
7090
7091 /* The annoying part is that pattern matching needs
7092 * that we modify the contents to null-terminate all
7093 * strings before testing them.
7094 */
7095
7096 term = *cur_end;
7097 *cur_end = '\0';
7098
7099 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7100 switch (exp->action) {
7101 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7102 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7103 done = 1;
7104 break;
7105
7106 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7107 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7108 done = 1;
7109 break;
7110
7111 case ACT_REPLACE:
7112 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7113 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7114 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7115 /* FIXME: if the user adds a newline in the replacement, the
7116 * index will not be recalculated for now, and the new line
7117 * will not be counted as a new header.
7118 */
7119
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7120 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7121 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7122 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7123 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7124 cur_ptr, cur_end + 1,
7125 NULL, NULL);
7126 if (unlikely(!cur_end))
7127 return -1;
7128
7129 /* we have a full respnse and we know that we have either a CR
7130 * or an LF at <ptr>.
7131 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7132 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]7133 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]7134 /* there is no point trying this regex on headers */
7135 return 1;
7136 }
7137 }
7138 *cur_end = term; /* restore the string terminator */
7139 return done;
7140}
7141
7142
7143
7144/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7145 * 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]7146 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7147 * unparsable response.
7148 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7149int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7150{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7151 struct http_txn *txn = &s->txn;
7152 struct hdr_exp *exp;
7153
7154 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7155 int ret;
7156
7157 /*
7158 * The interleaving of transformations and verdicts
7159 * makes it difficult to decide to continue or stop
7160 * the evaluation.
7161 */
7162
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7163 if (txn->flags & TX_SVDENY)
7164 break;
7165
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7166 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7167 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7168 exp->action == ACT_PASS)) {
7169 exp = exp->next;
7170 continue;
7171 }
7172
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7173 /* if this filter had a condition, evaluate it now and skip to
7174 * next filter if the condition does not match.
7175 */
7176 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7177 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]7178 ret = acl_pass(ret);
7179 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7180 ret = !ret;
7181 if (!ret)
7182 continue;
7183 }
7184
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7185 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7186 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7187 if (unlikely(ret < 0))
7188 return -1;
7189
7190 if (likely(ret == 0)) {
7191 /* The filter did not match the response, it can be
7192 * iterated through all headers.
7193 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7194 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7195 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7196 }
7197 return 0;
7198}
7199
7200
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7201/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7202 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7203 * desirable to call it only when needed. This function is also used when we
7204 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7205 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7206void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7207{
7208 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7209 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7210 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7211 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7212 char *hdr_beg, *hdr_end, *hdr_next;
7213 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7214
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7215 /* Iterate through the headers.
7216 * we start with the start line.
7217 */
7218 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7219 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7220
7221 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7222 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7223 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7224
7225 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7226 hdr_beg = hdr_next;
7227 hdr_end = hdr_beg + cur_hdr->len;
7228 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7229
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7230 /* We have one full header between hdr_beg and hdr_end, and the
7231 * next header starts at hdr_next. We're only interested in
7232 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7233 */
7234
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7235 is_cookie2 = 0;
7236 prev = hdr_beg + 10;
7237 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7238 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7239 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7240 if (!val) {
7241 old_idx = cur_idx;
7242 continue;
7243 }
7244 is_cookie2 = 1;
7245 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7246 }
7247
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7248 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7249 * <prev> points to the colon.
7250 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7251 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7252
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7253 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7254 * check-cache is enabled) and we are not interested in checking
7255 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7256 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7257 if (t->be->cookie_name == NULL &&
7258 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7259 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7260 return;
7261
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7262 /* OK so now we know we have to process this response cookie.
7263 * The format of the Set-Cookie header is slightly different
7264 * from the format of the Cookie header in that it does not
7265 * support the comma as a cookie delimiter (thus the header
7266 * cannot be folded) because the Expires attribute described in
7267 * the original Netscape's spec may contain an unquoted date
7268 * with a comma inside. We have to live with this because
7269 * many browsers don't support Max-Age and some browsers don't
7270 * support quoted strings. However the Set-Cookie2 header is
7271 * clean.
7272 *
7273 * We have to keep multiple pointers in order to support cookie
7274 * removal at the beginning, middle or end of header without
7275 * corrupting the header (in case of set-cookie2). A special
7276 * pointer, <scav> points to the beginning of the set-cookie-av
7277 * fields after the first semi-colon. The <next> pointer points
7278 * either to the end of line (set-cookie) or next unquoted comma
7279 * (set-cookie2). All of these headers are valid :
7280 *
7281 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7282 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7283 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7284 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7285 * | | | | | | | | | |
7286 * | | | | | | | | +-> next hdr_end <--+
7287 * | | | | | | | +------------> scav
7288 * | | | | | | +--------------> val_end
7289 * | | | | | +--------------------> val_beg
7290 * | | | | +----------------------> equal
7291 * | | | +------------------------> att_end
7292 * | | +----------------------------> att_beg
7293 * | +------------------------------> prev
7294 * +-----------------------------------------> hdr_beg
7295 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7296
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7297 for (; prev < hdr_end; prev = next) {
7298 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7299
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7300 /* find att_beg */
7301 att_beg = prev + 1;
7302 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7303 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7304
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7305 /* find att_end : this is the first character after the last non
7306 * space before the equal. It may be equal to hdr_end.
7307 */
7308 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7309
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7310 while (equal < hdr_end) {
7311 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7312 break;
7313 if (http_is_spht[(unsigned char)*equal++])
7314 continue;
7315 att_end = equal;
7316 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7317
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7318 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7319 * is between <att_beg> and <equal>, both may be identical.
7320 */
7321
7322 /* look for end of cookie if there is an equal sign */
7323 if (equal < hdr_end && *equal == '=') {
7324 /* look for the beginning of the value */
7325 val_beg = equal + 1;
7326 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7327 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7328
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7329 /* find the end of the value, respecting quotes */
7330 next = find_cookie_value_end(val_beg, hdr_end);
7331
7332 /* make val_end point to the first white space or delimitor after the value */
7333 val_end = next;
7334 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7335 val_end--;
7336 } else {
7337 /* <equal> points to next comma, semi-colon or EOL */
7338 val_beg = val_end = next = equal;
7339 }
7340
7341 if (next < hdr_end) {
7342 /* Set-Cookie2 supports multiple cookies, and <next> points to
7343 * a colon or semi-colon before the end. So skip all attr-value
7344 * pairs and look for the next comma. For Set-Cookie, since
7345 * commas are permitted in values, skip to the end.
7346 */
7347 if (is_cookie2)
7348 next = find_hdr_value_end(next, hdr_end);
7349 else
7350 next = hdr_end;
7351 }
7352
7353 /* Now everything is as on the diagram above */
7354
7355 /* Ignore cookies with no equal sign */
7356 if (equal == val_end)
7357 continue;
7358
7359 /* If there are spaces around the equal sign, we need to
7360 * strip them otherwise we'll get trouble for cookie captures,
7361 * or even for rewrites. Since this happens extremely rarely,
7362 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7363 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7364 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7365 int stripped_before = 0;
7366 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7367
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7368 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7369 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7370 equal += stripped_before;
7371 val_beg += stripped_before;
7372 }
7373
7374 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7375 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7376 val_beg += stripped_after;
7377 stripped_before += stripped_after;
7378 }
7379
7380 val_end += stripped_before;
7381 next += stripped_before;
7382 hdr_end += stripped_before;
7383 hdr_next += stripped_before;
7384 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7385 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7386 }
7387
7388 /* First, let's see if we want to capture this cookie. We check
7389 * that we don't already have a server side cookie, because we
7390 * can only capture one. Also as an optimisation, we ignore
7391 * cookies shorter than the declared name.
7392 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7393 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7394 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7395 (val_end - att_beg >= t->fe->capture_namelen) &&
7396 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7397 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7398 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7399 Alert("HTTP logging : out of memory.\n");
7400 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7401 else {
7402 if (log_len > t->fe->capture_len)
7403 log_len = t->fe->capture_len;
7404 memcpy(txn->srv_cookie, att_beg, log_len);
7405 txn->srv_cookie[log_len] = 0;
7406 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7407 }
7408
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7409 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7410 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7411 if (!(t->flags & SN_IGNORE_PRST) &&
7412 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7413 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7414 /* assume passive cookie by default */
7415 txn->flags &= ~TX_SCK_MASK;
7416 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7417
7418 /* If the cookie is in insert mode on a known server, we'll delete
7419 * this occurrence because we'll insert another one later.
7420 * 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]7421 * a direct access.
7422 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7423 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7424 /* The "preserve" flag was set, we don't want to touch the
7425 * server's cookie.
7426 */
7427 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7428 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7429 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7430 /* this cookie must be deleted */
7431 if (*prev == ':' && next == hdr_end) {
7432 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7433 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7434 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7435 txn->hdr_idx.used--;
7436 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7437 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7438 hdr_next += delta;
7439 http_msg_move_end(&txn->rsp, delta);
7440 /* note: while both invalid now, <next> and <hdr_end>
7441 * are still equal, so the for() will stop as expected.
7442 */
7443 } else {
7444 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7445 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7446 next = prev;
7447 hdr_end += delta;
7448 hdr_next += delta;
7449 cur_hdr->len += delta;
7450 http_msg_move_end(&txn->rsp, delta);
7451 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7452 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7453 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7454 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7455 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7456 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7457 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7458 * with this server since we know it.
7459 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7460 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7461 next += delta;
7462 hdr_end += delta;
7463 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7464 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7465 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7466
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7467 txn->flags &= ~TX_SCK_MASK;
7468 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7469 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7470 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7471 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7472 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7473 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7474 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7475 next += delta;
7476 hdr_end += delta;
7477 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7478 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7479 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7480
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7481 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7482 txn->flags &= ~TX_SCK_MASK;
7483 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7484 }
7485 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7486 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7487 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7488 int cmp_len, value_len;
7489 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7490
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7491 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7492 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7493 value_begin = att_beg + t->be->appsession_name_len;
7494 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]7495 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7496 cmp_len = att_end - att_beg;
7497 value_begin = val_beg;
7498 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7499 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7500
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7501 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7502 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7503 /* free a possibly previously allocated memory */
7504 pool_free2(apools.sessid, txn->sessid);
7505
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7506 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7507 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7508 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7509 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7510 return;
7511 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7512 memcpy(txn->sessid, value_begin, value_len);
7513 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7514 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7515 }
7516 /* that's done for this cookie, check the next one on the same
7517 * line when next != hdr_end (only if is_cookie2).
7518 */
7519 }
7520 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7521 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7522 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7523
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7524 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7525 appsess *asession = NULL;
7526 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7527 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7528 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7529 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7530 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7531 Alert("Not enough Memory process_srv():asession:calloc().\n");
7532 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7533 return;
7534 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7535 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7536
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7537 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7538 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7539 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]7540 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7541 return;
7542 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7543 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7544 asession->sessid[t->be->appsession_len] = 0;
7545
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7546 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7547 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7548 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7549 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]7550 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7551 return;
7552 }
7553 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7554 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7555
7556 asession->request_count = 0;
7557 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7558 }
7559
7560 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7561 asession->request_count++;
7562 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7563}
7564
7565
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7566/*
7567 * Check if response is cacheable or not. Updates t->flags.
7568 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7569void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7570{
7571 struct http_txn *txn = &t->txn;
7572 char *p1, *p2;
7573
7574 char *cur_ptr, *cur_end, *cur_next;
7575 int cur_idx;
7576
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7577 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7578 return;
7579
7580 /* Iterate through the headers.
7581 * we start with the start line.
7582 */
7583 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7584 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7585
7586 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7587 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7588 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7589
7590 cur_hdr = &txn->hdr_idx.v[cur_idx];
7591 cur_ptr = cur_next;
7592 cur_end = cur_ptr + cur_hdr->len;
7593 cur_next = cur_end + cur_hdr->cr + 1;
7594
7595 /* We have one full header between cur_ptr and cur_end, and the
7596 * next header starts at cur_next. We're only interested in
7597 * "Cookie:" headers.
7598 */
7599
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7600 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7601 if (val) {
7602 if ((cur_end - (cur_ptr + val) >= 8) &&
7603 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7604 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7605 return;
7606 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7607 }
7608
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7609 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7610 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7611 continue;
7612
7613 /* OK, right now we know we have a cache-control header at cur_ptr */
7614
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7615 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7616
7617 if (p1 >= cur_end) /* no more info */
7618 continue;
7619
7620 /* p1 is at the beginning of the value */
7621 p2 = p1;
7622
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7623 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7624 p2++;
7625
7626 /* we have a complete value between p1 and p2 */
7627 if (p2 < cur_end && *p2 == '=') {
7628 /* we have something of the form no-cache="set-cookie" */
7629 if ((cur_end - p1 >= 21) &&
7630 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7631 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7632 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7633 continue;
7634 }
7635
7636 /* OK, so we know that either p2 points to the end of string or to a comma */
7637 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]7638 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7639 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7640 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7641 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7642 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7643 return;
7644 }
7645
7646 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7647 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7648 continue;
7649 }
7650 }
7651}
7652
7653
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7654/*
7655 * Try to retrieve a known appsession in the URI, then the associated server.
7656 * If the server is found, it's assigned to the session.
7657 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7658void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7659{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7660 char *end_params, *first_param, *cur_param, *next_param;
7661 char separator;
7662 int value_len;
7663
7664 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7665
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7666 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7667 (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]7668 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7669 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7670
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7671 first_param = NULL;
7672 switch (mode) {
7673 case PR_O2_AS_M_PP:
7674 first_param = memchr(begin, ';', len);
7675 break;
7676 case PR_O2_AS_M_QS:
7677 first_param = memchr(begin, '?', len);
7678 break;
7679 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7680
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7681 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7682 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7683 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7684
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7685 switch (mode) {
7686 case PR_O2_AS_M_PP:
7687 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7688 end_params = (char *) begin + len;
7689 }
7690 separator = ';';
7691 break;
7692 case PR_O2_AS_M_QS:
7693 end_params = (char *) begin + len;
7694 separator = '&';
7695 break;
7696 default:
7697 /* unknown mode, shouldn't happen */
7698 return;
7699 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7700
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7701 cur_param = next_param = end_params;
7702 while (cur_param > first_param) {
7703 cur_param--;
7704 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7705 /* let's see if this is the appsession parameter */
7706 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7707 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7708 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7709 /* Cool... it's the right one */
7710 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7711 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7712 if (value_len > 0) {
7713 manage_client_side_appsession(t, cur_param, value_len);
7714 }
7715 break;
7716 }
7717 next_param = cur_param;
7718 }
7719 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7720#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7721 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7722 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7723#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7724}
7725
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7726/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7727 * 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]7728 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7729 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7730 * 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]7731 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7732 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7733 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7734 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7735int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7736{
7737 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7738 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7739 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7740
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7741 if (!uri_auth)
7742 return 0;
7743
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7744 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]7745 return 0;
7746
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7747 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7748 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7749 return 0;
7750
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]7751 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7752 return 0;
7753
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7754 return 1;
7755}
7756
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7757/*
7758 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7759 * By default it tries to report the error position as msg->err_pos. However if
7760 * this one is not set, it will then report msg->next, which is the last known
7761 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7762 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7763 */
7764void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7765 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7766 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7767{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7768 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7769 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7770
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7771 es->len = MIN(chn->buf->i, sizeof(es->buf));
7772 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7773 len1 = MIN(len1, es->len);
7774 len2 = es->len - len1; /* remaining data if buffer wraps */
7775
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7776 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7777 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7778 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7779
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7780 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7781 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7782 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7783 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7784
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7785 es->when = date; // user-visible date
7786 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7787 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7788 es->oe = other_end;
Willy Tarreauf2943dc2012-10-26 20:10:28 +0200[diff] [blame]7789 es->src = s->req->prod->conn->addr.from;
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7790 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7791 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7792 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7793 es->s_flags = s->flags;
7794 es->t_flags = s->txn.flags;
7795 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7796 es->b_out = chn->buf->o;
7797 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7798 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7799 es->m_clen = msg->chunk_len;
7800 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7801}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7802
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7803/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7804 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7805 * performed over the whole headers. Otherwise it must contain a valid header
7806 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7807 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7808 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7809 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7810 * -1. The value fetch stops at commas, so this function is suited for use with
7811 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7812 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7813 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7814unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7815 struct hdr_idx *idx, int occ,
7816 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7817{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7818 struct hdr_ctx local_ctx;
7819 char *ptr_hist[MAX_HDR_HISTORY];
7820 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7821 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7822 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7823
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7824 if (!ctx) {
7825 local_ctx.idx = 0;
7826 ctx = &local_ctx;
7827 }
7828
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7829 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7830 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7831 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7832 occ--;
7833 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7834 *vptr = ctx->line + ctx->val;
7835 *vlen = ctx->vlen;
7836 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7837 }
7838 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7839 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7840 }
7841
7842 /* negative occurrence, we scan all the list then walk back */
7843 if (-occ > MAX_HDR_HISTORY)
7844 return 0;
7845
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7846 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7847 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7848 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7849 len_hist[hist_ptr] = ctx->vlen;
7850 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7851 hist_ptr = 0;
7852 found++;
7853 }
7854 if (-occ > found)
7855 return 0;
7856 /* 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]7857 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
7858 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
7859 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7860 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]7861 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7862 if (hist_ptr >= MAX_HDR_HISTORY)
7863 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7864 *vptr = ptr_hist[hist_ptr];
7865 *vlen = len_hist[hist_ptr];
7866 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7867}
7868
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7869/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7870 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7871 * performed over the whole headers. Otherwise it must contain a valid header
7872 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7873 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7874 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7875 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7876 * -1. This function differs from http_get_hdr() in that it only returns full
7877 * line header values and does not stop at commas.
7878 * The return value is 0 if nothing was found, or non-zero otherwise.
7879 */
7880unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
7881 struct hdr_idx *idx, int occ,
7882 struct hdr_ctx *ctx, char **vptr, int *vlen)
7883{
7884 struct hdr_ctx local_ctx;
7885 char *ptr_hist[MAX_HDR_HISTORY];
7886 int len_hist[MAX_HDR_HISTORY];
7887 unsigned int hist_ptr;
7888 int found;
7889
7890 if (!ctx) {
7891 local_ctx.idx = 0;
7892 ctx = &local_ctx;
7893 }
7894
7895 if (occ >= 0) {
7896 /* search from the beginning */
7897 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
7898 occ--;
7899 if (occ <= 0) {
7900 *vptr = ctx->line + ctx->val;
7901 *vlen = ctx->vlen;
7902 return 1;
7903 }
7904 }
7905 return 0;
7906 }
7907
7908 /* negative occurrence, we scan all the list then walk back */
7909 if (-occ > MAX_HDR_HISTORY)
7910 return 0;
7911
7912 found = hist_ptr = 0;
7913 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
7914 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7915 len_hist[hist_ptr] = ctx->vlen;
7916 if (++hist_ptr >= MAX_HDR_HISTORY)
7917 hist_ptr = 0;
7918 found++;
7919 }
7920 if (-occ > found)
7921 return 0;
7922 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7923 * find occurrence -occ, so we have to check [hist_ptr+occ].
7924 */
7925 hist_ptr += occ;
7926 if (hist_ptr >= MAX_HDR_HISTORY)
7927 hist_ptr -= MAX_HDR_HISTORY;
7928 *vptr = ptr_hist[hist_ptr];
7929 *vlen = len_hist[hist_ptr];
7930 return 1;
7931}
7932
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7933/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7934 * Print a debug line with a header. Always stop at the first CR or LF char,
7935 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7936 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7937 */
7938void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7939{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7940 int max;
7941 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreau7f7ad912012-11-11 19:27:15 +0100[diff] [blame]7942 dir, (unsigned short)t->req->prod->conn->t.sock.fd,
7943 (unsigned short)t->req->cons->conn->t.sock.fd);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7944
7945 for (max = 0; start + max < end; max++)
7946 if (start[max] == '\r' || start[max] == '\n')
7947 break;
7948
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7949 UBOUND(max, trash.size - trash.len - 3);
7950 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
7951 trash.str[trash.len++] = '\n';
7952 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7953}
7954
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7955/*
7956 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7957 * the required fields are properly allocated and that we only need to (re)init
7958 * them. This should be used before processing any new request.
7959 */
7960void http_init_txn(struct session *s)
7961{
7962 struct http_txn *txn = &s->txn;
7963 struct proxy *fe = s->fe;
7964
7965 txn->flags = 0;
7966 txn->status = -1;
7967
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7968 txn->cookie_first_date = 0;
7969 txn->cookie_last_date = 0;
7970
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7971 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7972 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7973 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]7974 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]7975 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]7976 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]7977 txn->req.chunk_len = 0LL;
7978 txn->req.body_len = 0LL;
7979 txn->rsp.chunk_len = 0LL;
7980 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7981 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
7982 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]7983 txn->req.chn = s->req;
7984 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]7985
7986 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7987
7988 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
7989 if (fe->options2 & PR_O2_REQBUG_OK)
7990 txn->req.err_pos = -1; /* let buggy requests pass */
7991
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7992 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7993 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
7994
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]7995 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7996 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
7997
7998 if (txn->hdr_idx.v)
7999 hdr_idx_init(&txn->hdr_idx);
8000}
8001
8002/* to be used at the end of a transaction */
8003void http_end_txn(struct session *s)
8004{
8005 struct http_txn *txn = &s->txn;
8006
8007 /* these ones will have been dynamically allocated */
8008 pool_free2(pool2_requri, txn->uri);
8009 pool_free2(pool2_capture, txn->cli_cookie);
8010 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8011 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8012 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8013
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8014 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8015 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8016 txn->uri = NULL;
8017 txn->srv_cookie = NULL;
8018 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8019
8020 if (txn->req.cap) {
8021 struct cap_hdr *h;
8022 for (h = s->fe->req_cap; h; h = h->next)
8023 pool_free2(h->pool, txn->req.cap[h->index]);
8024 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8025 }
8026
8027 if (txn->rsp.cap) {
8028 struct cap_hdr *h;
8029 for (h = s->fe->rsp_cap; h; h = h->next)
8030 pool_free2(h->pool, txn->rsp.cap[h->index]);
8031 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8032 }
8033
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8034}
8035
8036/* to be used at the end of a transaction to prepare a new one */
8037void http_reset_txn(struct session *s)
8038{
8039 http_end_txn(s);
8040 http_init_txn(s);
8041
8042 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8043 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8044 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8045 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8046 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8047 /* re-init store persistence */
8048 s->store_count = 0;
8049
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8050 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8051
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8052 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8053
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8054 /* We must trim any excess data from the response buffer, because we
8055 * may have blocked an invalid response from a server that we don't
8056 * want to accidentely forward once we disable the analysers, nor do
8057 * we want those data to come along with next response. A typical
8058 * example of such data would be from a buggy server responding to
8059 * a HEAD with some data, or sending more than the advertised
8060 * content-length.
8061 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8062 if (unlikely(s->rep->buf->i))
8063 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8064
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8065 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8066 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8067
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8068 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8069 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8070
8071 s->req->rex = TICK_ETERNITY;
8072 s->req->wex = TICK_ETERNITY;
8073 s->req->analyse_exp = TICK_ETERNITY;
8074 s->rep->rex = TICK_ETERNITY;
8075 s->rep->wex = TICK_ETERNITY;
8076 s->rep->analyse_exp = TICK_ETERNITY;
8077}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8078
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8079void free_http_req_rules(struct list *r) {
8080 struct http_req_rule *tr, *pr;
8081
8082 list_for_each_entry_safe(pr, tr, r, list) {
8083 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8084 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8085 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8086
8087 free(pr);
8088 }
8089}
8090
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8091/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8092struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8093{
8094 struct http_req_rule *rule;
8095 int cur_arg;
8096
8097 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8098 if (!rule) {
8099 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8100 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8101 }
8102
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8103 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8104 rule->action = HTTP_REQ_ACT_ALLOW;
8105 cur_arg = 1;
8106 } else if (!strcmp(args[0], "deny")) {
8107 rule->action = HTTP_REQ_ACT_DENY;
8108 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8109 } else if (!strcmp(args[0], "tarpit")) {
8110 rule->action = HTTP_REQ_ACT_TARPIT;
8111 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8112 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8113 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8114 cur_arg = 1;
8115
8116 while(*args[cur_arg]) {
8117 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8118 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8119 cur_arg+=2;
8120 continue;
8121 } else
8122 break;
8123 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8124 } else if (!strcmp(args[0], "set-nice")) {
8125 rule->action = HTTP_REQ_ACT_SET_NICE;
8126 cur_arg = 1;
8127
8128 if (!*args[cur_arg] ||
8129 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8130 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8131 file, linenum, args[0]);
8132 goto out_err;
8133 }
8134 rule->arg.nice = atoi(args[cur_arg]);
8135 if (rule->arg.nice < -1024)
8136 rule->arg.nice = -1024;
8137 else if (rule->arg.nice > 1024)
8138 rule->arg.nice = 1024;
8139 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8140 } else if (!strcmp(args[0], "set-tos")) {
8141#ifdef IP_TOS
8142 char *err;
8143 rule->action = HTTP_REQ_ACT_SET_TOS;
8144 cur_arg = 1;
8145
8146 if (!*args[cur_arg] ||
8147 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8148 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8149 file, linenum, args[0]);
8150 goto out_err;
8151 }
8152
8153 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8154 if (err && *err != '\0') {
8155 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8156 file, linenum, err, args[0]);
8157 goto out_err;
8158 }
8159 cur_arg++;
8160#else
8161 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8162 goto out_err;
8163#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8164 } else if (!strcmp(args[0], "set-mark")) {
8165#ifdef SO_MARK
8166 char *err;
8167 rule->action = HTTP_REQ_ACT_SET_MARK;
8168 cur_arg = 1;
8169
8170 if (!*args[cur_arg] ||
8171 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8172 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8173 file, linenum, args[0]);
8174 goto out_err;
8175 }
8176
8177 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8178 if (err && *err != '\0') {
8179 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8180 file, linenum, err, args[0]);
8181 goto out_err;
8182 }
8183 cur_arg++;
8184 global.last_checks |= LSTCHK_NETADM;
8185#else
8186 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8187 goto out_err;
8188#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8189 } else if (!strcmp(args[0], "set-log-level")) {
8190 rule->action = HTTP_REQ_ACT_SET_LOGL;
8191 cur_arg = 1;
8192
8193 if (!*args[cur_arg] ||
8194 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8195 bad_log_level:
8196 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8197 file, linenum, args[0]);
8198 goto out_err;
8199 }
8200 if (strcmp(args[cur_arg], "silent") == 0)
8201 rule->arg.loglevel = -1;
8202 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8203 goto bad_log_level;
8204 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8205 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8206 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8207 cur_arg = 1;
8208
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8209 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8210 (*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]8211 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8212 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8213 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8214 }
8215
8216 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8217 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8218 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8219
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8220 proxy->conf.args.ctx = ARGC_HRQ;
Willy Tarreau434c57c2013-01-08 01:10:24 +0100[diff] [blame]8221 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8222 (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]8223 cur_arg += 2;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8224 } else if (strcmp(args[0], "redirect") == 0) {
8225 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]8226 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8227
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8228 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]8229 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8230 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8231 goto out_err;
8232 }
8233
8234 /* this redirect rule might already contain a parsed condition which
8235 * we'll pass to the http-request rule.
8236 */
8237 rule->action = HTTP_REQ_ACT_REDIR;
8238 rule->arg.redir = redir;
8239 rule->cond = redir->cond;
8240 redir->cond = NULL;
8241 cur_arg = 2;
8242 return rule;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8243 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8244 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]8245 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8246 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8247 }
8248
8249 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8250 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8251 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8252
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8253 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8254 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
8255 file, linenum, args[0], errmsg);
8256 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8257 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8258 }
8259 rule->cond = cond;
8260 }
8261 else if (*args[cur_arg]) {
8262 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
8263 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8264 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8265 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8266 }
8267
8268 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8269 out_err:
8270 free(rule);
8271 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8272}
8273
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8274/* parse an "http-respose" rule */
8275struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8276{
8277 struct http_res_rule *rule;
8278 int cur_arg;
8279
8280 rule = calloc(1, sizeof(*rule));
8281 if (!rule) {
8282 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
8283 goto out_err;
8284 }
8285
8286 if (!strcmp(args[0], "allow")) {
8287 rule->action = HTTP_RES_ACT_ALLOW;
8288 cur_arg = 1;
8289 } else if (!strcmp(args[0], "deny")) {
8290 rule->action = HTTP_RES_ACT_DENY;
8291 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8292 } else if (!strcmp(args[0], "set-nice")) {
8293 rule->action = HTTP_RES_ACT_SET_NICE;
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-response %s' expects exactly 1 argument (integer value).\n",
8299 file, linenum, args[0]);
8300 goto out_err;
8301 }
8302 rule->arg.nice = atoi(args[cur_arg]);
8303 if (rule->arg.nice < -1024)
8304 rule->arg.nice = -1024;
8305 else if (rule->arg.nice > 1024)
8306 rule->arg.nice = 1024;
8307 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8308 } else if (!strcmp(args[0], "set-tos")) {
8309#ifdef IP_TOS
8310 char *err;
8311 rule->action = HTTP_RES_ACT_SET_TOS;
8312 cur_arg = 1;
8313
8314 if (!*args[cur_arg] ||
8315 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8316 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8317 file, linenum, args[0]);
8318 goto out_err;
8319 }
8320
8321 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8322 if (err && *err != '\0') {
8323 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8324 file, linenum, err, args[0]);
8325 goto out_err;
8326 }
8327 cur_arg++;
8328#else
8329 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8330 goto out_err;
8331#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8332 } else if (!strcmp(args[0], "set-mark")) {
8333#ifdef SO_MARK
8334 char *err;
8335 rule->action = HTTP_RES_ACT_SET_MARK;
8336 cur_arg = 1;
8337
8338 if (!*args[cur_arg] ||
8339 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8340 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8341 file, linenum, args[0]);
8342 goto out_err;
8343 }
8344
8345 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8346 if (err && *err != '\0') {
8347 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8348 file, linenum, err, args[0]);
8349 goto out_err;
8350 }
8351 cur_arg++;
8352 global.last_checks |= LSTCHK_NETADM;
8353#else
8354 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8355 goto out_err;
8356#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8357 } else if (!strcmp(args[0], "set-log-level")) {
8358 rule->action = HTTP_RES_ACT_SET_LOGL;
8359 cur_arg = 1;
8360
8361 if (!*args[cur_arg] ||
8362 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8363 bad_log_level:
8364 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
8365 file, linenum, args[0]);
8366 goto out_err;
8367 }
8368 if (strcmp(args[cur_arg], "silent") == 0)
8369 rule->arg.loglevel = -1;
8370 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
8371 goto bad_log_level;
8372 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8373 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8374 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
8375 cur_arg = 1;
8376
8377 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8378 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
8379 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
8380 file, linenum, args[0]);
8381 goto out_err;
8382 }
8383
8384 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8385 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8386 LIST_INIT(&rule->arg.hdr_add.fmt);
8387
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8388 proxy->conf.args.ctx = ARGC_HRS;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8389 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8390 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR);
8391 cur_arg += 2;
8392 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8393 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]8394 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
8395 goto out_err;
8396 }
8397
8398 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8399 struct acl_cond *cond;
8400 char *errmsg = NULL;
8401
8402 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8403 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
8404 file, linenum, args[0], errmsg);
8405 free(errmsg);
8406 goto out_err;
8407 }
8408 rule->cond = cond;
8409 }
8410 else if (*args[cur_arg]) {
8411 Alert("parsing [%s:%d]: 'http-response %s' expects"
8412 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8413 file, linenum, args[0], args[cur_arg]);
8414 goto out_err;
8415 }
8416
8417 return rule;
8418 out_err:
8419 free(rule);
8420 return NULL;
8421}
8422
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8423/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8424 * with <err> filled with the error message. If <use_fmt> is not null, builds a
8425 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8426 */
8427struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8428 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8429{
8430 struct redirect_rule *rule;
8431 int cur_arg;
8432 int type = REDIRECT_TYPE_NONE;
8433 int code = 302;
8434 const char *destination = NULL;
8435 const char *cookie = NULL;
8436 int cookie_set = 0;
8437 unsigned int flags = REDIRECT_FLAG_NONE;
8438 struct acl_cond *cond = NULL;
8439
8440 cur_arg = 0;
8441 while (*(args[cur_arg])) {
8442 if (strcmp(args[cur_arg], "location") == 0) {
8443 if (!*args[cur_arg + 1])
8444 goto missing_arg;
8445
8446 type = REDIRECT_TYPE_LOCATION;
8447 cur_arg++;
8448 destination = args[cur_arg];
8449 }
8450 else if (strcmp(args[cur_arg], "prefix") == 0) {
8451 if (!*args[cur_arg + 1])
8452 goto missing_arg;
8453
8454 type = REDIRECT_TYPE_PREFIX;
8455 cur_arg++;
8456 destination = args[cur_arg];
8457 }
8458 else if (strcmp(args[cur_arg], "scheme") == 0) {
8459 if (!*args[cur_arg + 1])
8460 goto missing_arg;
8461
8462 type = REDIRECT_TYPE_SCHEME;
8463 cur_arg++;
8464 destination = args[cur_arg];
8465 }
8466 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
8467 if (!*args[cur_arg + 1])
8468 goto missing_arg;
8469
8470 cur_arg++;
8471 cookie = args[cur_arg];
8472 cookie_set = 1;
8473 }
8474 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
8475 if (!*args[cur_arg + 1])
8476 goto missing_arg;
8477
8478 cur_arg++;
8479 cookie = args[cur_arg];
8480 cookie_set = 0;
8481 }
8482 else if (strcmp(args[cur_arg], "code") == 0) {
8483 if (!*args[cur_arg + 1])
8484 goto missing_arg;
8485
8486 cur_arg++;
8487 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8488 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8489 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8490 "'%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]8491 args[cur_arg - 1], args[cur_arg]);
8492 return NULL;
8493 }
8494 }
8495 else if (!strcmp(args[cur_arg],"drop-query")) {
8496 flags |= REDIRECT_FLAG_DROP_QS;
8497 }
8498 else if (!strcmp(args[cur_arg],"append-slash")) {
8499 flags |= REDIRECT_FLAG_APPEND_SLASH;
8500 }
8501 else if (strcmp(args[cur_arg], "if") == 0 ||
8502 strcmp(args[cur_arg], "unless") == 0) {
8503 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
8504 if (!cond) {
8505 memprintf(errmsg, "error in condition: %s", *errmsg);
8506 return NULL;
8507 }
8508 break;
8509 }
8510 else {
8511 memprintf(errmsg,
8512 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
8513 args[cur_arg]);
8514 return NULL;
8515 }
8516 cur_arg++;
8517 }
8518
8519 if (type == REDIRECT_TYPE_NONE) {
8520 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
8521 return NULL;
8522 }
8523
8524 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
8525 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]8526 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8527
8528 if (!use_fmt) {
8529 /* old-style static redirect rule */
8530 rule->rdr_str = strdup(destination);
8531 rule->rdr_len = strlen(destination);
8532 }
8533 else {
8534 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8535
8536 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
8537 * if prefix == "/", we don't want to add anything, otherwise it
8538 * makes it hard for the user to configure a self-redirection.
8539 */
8540 proxy->conf.args.ctx = ARGC_RDR;
8541 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
8542 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, 0,
8543 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR);
8544 }
8545 }
8546
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8547 if (cookie) {
8548 /* depending on cookie_set, either we want to set the cookie, or to clear it.
8549 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
8550 */
8551 rule->cookie_len = strlen(cookie);
8552 if (cookie_set) {
8553 rule->cookie_str = malloc(rule->cookie_len + 10);
8554 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8555 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
8556 rule->cookie_len += 9;
8557 } else {
8558 rule->cookie_str = malloc(rule->cookie_len + 21);
8559 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8560 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
8561 rule->cookie_len += 20;
8562 }
8563 }
8564 rule->type = type;
8565 rule->code = code;
8566 rule->flags = flags;
8567 LIST_INIT(&rule->list);
8568 return rule;
8569
8570 missing_arg:
8571 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
8572 return NULL;
8573}
8574
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8575/************************************************************************/
8576/* The code below is dedicated to ACL parsing and matching */
8577/************************************************************************/
8578
8579
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8580/* This function ensures that the prerequisites for an L7 fetch are ready,
8581 * which means that a request or response is ready. If some data is missing,
8582 * 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]8583 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
8584 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8585 *
8586 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8587 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
8588 * decide whether or not an HTTP message is present ;
8589 * 0 if the requested data cannot be fetched or if it is certain that
8590 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8591 * 1 if an HTTP message is ready
8592 */
8593static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8594smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8595 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8596{
8597 struct http_txn *txn = l7;
8598 struct http_msg *msg = &txn->req;
8599
8600 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8601 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8602 */
8603
8604 if (unlikely(!s || !txn))
8605 return 0;
8606
8607 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8608 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8609
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8610 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8611 if (unlikely(!s->req))
8612 return 0;
8613
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8614 /* If the buffer does not leave enough free space at the end,
8615 * we must first realign it.
8616 */
8617 if (s->req->buf->p > s->req->buf->data &&
8618 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
8619 buffer_slow_realign(s->req->buf);
8620
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8621 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]8622 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8623 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8624
8625 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8626 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8627 http_msg_analyzer(msg, &txn->hdr_idx);
8628
8629 /* Still no valid request ? */
8630 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8631 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8632 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8633 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8634 }
8635 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8636 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8637 return 0;
8638 }
8639
8640 /* OK we just got a valid HTTP request. We have some minor
8641 * preparation to perform so that further checks can rely
8642 * on HTTP tests.
8643 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8644
8645 /* If the request was parsed but was too large, we must absolutely
8646 * return an error so that it is not processed. At the moment this
8647 * cannot happen, but if the parsers are to change in the future,
8648 * we want this check to be maintained.
8649 */
8650 if (unlikely(s->req->buf->i + s->req->buf->p >
8651 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
8652 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8653 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8654 return 1;
8655 }
8656
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8657 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8658 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
8659 s->flags |= SN_REDIRECTABLE;
8660
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8661 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
8662 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8663 }
8664
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8665 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8666 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8667 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8668
8669 /* otherwise everything's ready for the request */
8670 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8671 else {
8672 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8673 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
8674 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8675 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8676 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8677 }
8678
8679 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8680 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8681 return 1;
8682}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8683
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8684#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8685 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]8686
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8687#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8688 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]8689
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8690
8691/* 1. Check on METHOD
8692 * We use the pre-parsed method if it is known, and store its number as an
8693 * integer. If it is unknown, we use the pointer and the length.
8694 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8695static int pat_parse_meth(const char **text, struct pattern *pattern, struct sample_storage *smp, int *opaque, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8696{
8697 int len, meth;
8698
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8699 len = strlen(*text);
8700 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8701
Thierry FOURNIERdd69a042013-11-22 19:14:42 +0100[diff] [blame]8702 pattern->smp = smp;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8703 pattern->val.i = meth;
8704 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8705 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8706 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8707 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8708 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8709 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8710 pattern->len = len;
8711 }
8712 return 1;
8713}
8714
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8715/* This function fetches the method of current HTTP request and stores
8716 * it in the global pattern struct as a chunk. There are two possibilities :
8717 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8718 * in <len> and <ptr> is NULL ;
8719 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8720 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8721 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8722 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8723static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8724smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8725 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8726{
8727 int meth;
8728 struct http_txn *txn = l7;
8729
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8730 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8731
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8732 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8733 smp->type = SMP_T_UINT;
8734 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8735 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8736 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8737 /* ensure the indexes are not affected */
8738 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8739 smp->type = SMP_T_CSTR;
8740 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8741 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8742 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8743 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8744 return 1;
8745}
8746
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8747/* See above how the method is stored in the global pattern */
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]8748static enum pat_match_res pat_match_meth(struct sample *smp, struct pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8749{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8750 int icase;
8751
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8752
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8753 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8754 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8755 if (smp->data.uint == pattern->val.i)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8756 return PAT_MATCH;
8757 return PAT_NOMATCH;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8758 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8759
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8760 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8761 if (pattern->val.i != HTTP_METH_OTHER)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8762 return PAT_NOMATCH;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8763
8764 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8765 if (pattern->len != smp->data.str.len)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8766 return PAT_NOMATCH;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8767
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8768 icase = pattern->flags & PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8769 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8770 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8771 return PAT_NOMATCH;
8772 return PAT_MATCH;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8773}
8774
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8775static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8776smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8777 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8778{
8779 struct http_txn *txn = l7;
8780 char *ptr;
8781 int len;
8782
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8783 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8784
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8785 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8786 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8787
8788 while ((len-- > 0) && (*ptr++ != '/'));
8789 if (len <= 0)
8790 return 0;
8791
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8792 smp->type = SMP_T_CSTR;
8793 smp->data.str.str = ptr;
8794 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8795
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8796 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8797 return 1;
8798}
8799
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8800static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8801smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8802 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8803{
8804 struct http_txn *txn = l7;
8805 char *ptr;
8806 int len;
8807
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8808 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8809
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8810 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8811 return 0;
8812
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8813 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8814 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8815
8816 while ((len-- > 0) && (*ptr++ != '/'));
8817 if (len <= 0)
8818 return 0;
8819
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8820 smp->type = SMP_T_CSTR;
8821 smp->data.str.str = ptr;
8822 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8823
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8824 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8825 return 1;
8826}
8827
8828/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8829static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8830smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8831 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8832{
8833 struct http_txn *txn = l7;
8834 char *ptr;
8835 int len;
8836
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8837 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8838
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8839 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8840 return 0;
8841
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8842 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8843 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8844
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8845 smp->type = SMP_T_UINT;
8846 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8847 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8848 return 1;
8849}
8850
8851/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8852static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8853smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8854 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8855{
8856 struct http_txn *txn = l7;
8857
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8858 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8859
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8860 smp->type = SMP_T_CSTR;
8861 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8862 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8863 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8864 return 1;
8865}
8866
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8867static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8868smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8869 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8870{
8871 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8872 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8873
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8874 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8875
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8876 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr);
8877 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]8878 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8879
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8880 smp->type = SMP_T_IPV4;
8881 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8882 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8883 return 1;
8884}
8885
8886static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8887smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8888 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8889{
8890 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8891 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8892
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8893 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8894
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8895 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr);
8896 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
8897 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8898
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8899 smp->type = SMP_T_UINT;
8900 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8901 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8902 return 1;
8903}
8904
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8905/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8906 * Accepts an optional argument of type string containing the header field name,
8907 * and an optional argument of type signed or unsigned integer to request an
8908 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8909 * headers are considered from the first one. It does not stop on commas and
8910 * returns full lines instead (useful for User-Agent or Date for example).
8911 */
8912static int
8913smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8914 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8915{
8916 struct http_txn *txn = l7;
8917 struct hdr_idx *idx = &txn->hdr_idx;
8918 struct hdr_ctx *ctx = smp->ctx.a[0];
8919 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
8920 int occ = 0;
8921 const char *name_str = NULL;
8922 int name_len = 0;
8923
8924 if (!ctx) {
8925 /* first call */
8926 ctx = &static_hdr_ctx;
8927 ctx->idx = 0;
8928 smp->ctx.a[0] = ctx;
8929 }
8930
8931 if (args) {
8932 if (args[0].type != ARGT_STR)
8933 return 0;
8934 name_str = args[0].data.str.str;
8935 name_len = args[0].data.str.len;
8936
8937 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
8938 occ = args[1].data.uint;
8939 }
8940
8941 CHECK_HTTP_MESSAGE_FIRST();
8942
8943 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
8944 /* search for header from the beginning */
8945 ctx->idx = 0;
8946
8947 if (!occ && !(opt & SMP_OPT_ITERATE))
8948 /* no explicit occurrence and single fetch => last header by default */
8949 occ = -1;
8950
8951 if (!occ)
8952 /* prepare to report multiple occurrences for ACL fetches */
8953 smp->flags |= SMP_F_NOT_LAST;
8954
8955 smp->type = SMP_T_CSTR;
8956 smp->flags |= SMP_F_VOL_HDR;
8957 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
8958 return 1;
8959
8960 smp->flags &= ~SMP_F_NOT_LAST;
8961 return 0;
8962}
8963
8964/* 6. Check on HTTP header count. The number of occurrences is returned.
8965 * Accepts exactly 1 argument of type string. It does not stop on commas and
8966 * returns full lines instead (useful for User-Agent or Date for example).
8967 */
8968static int
8969smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8970 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8971{
8972 struct http_txn *txn = l7;
8973 struct hdr_idx *idx = &txn->hdr_idx;
8974 struct hdr_ctx ctx;
8975 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
8976 int cnt;
8977
8978 if (!args || args->type != ARGT_STR)
8979 return 0;
8980
8981 CHECK_HTTP_MESSAGE_FIRST();
8982
8983 ctx.idx = 0;
8984 cnt = 0;
8985 while (http_find_full_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
8986 cnt++;
8987
8988 smp->type = SMP_T_UINT;
8989 smp->data.uint = cnt;
8990 smp->flags = SMP_F_VOL_HDR;
8991 return 1;
8992}
8993
8994/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8995 * Accepts an optional argument of type string containing the header field name,
8996 * and an optional argument of type signed or unsigned integer to request an
8997 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8998 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8999 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9000static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9001smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9002 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9003{
9004 struct http_txn *txn = l7;
9005 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9006 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9007 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]9008 int occ = 0;
9009 const char *name_str = NULL;
9010 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9011
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9012 if (!ctx) {
9013 /* first call */
9014 ctx = &static_hdr_ctx;
9015 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]9016 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9017 }
9018
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9019 if (args) {
9020 if (args[0].type != ARGT_STR)
9021 return 0;
9022 name_str = args[0].data.str.str;
9023 name_len = args[0].data.str.len;
9024
9025 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9026 occ = args[1].data.uint;
9027 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9028
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9029 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9030
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9031 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9032 /* search for header from the beginning */
9033 ctx->idx = 0;
9034
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9035 if (!occ && !(opt & SMP_OPT_ITERATE))
9036 /* no explicit occurrence and single fetch => last header by default */
9037 occ = -1;
9038
9039 if (!occ)
9040 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9041 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]9042
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9043 smp->type = SMP_T_CSTR;
9044 smp->flags |= SMP_F_VOL_HDR;
9045 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]9046 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9047
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9048 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9049 return 0;
9050}
9051
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9052/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9053 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9054 */
9055static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9056smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9057 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9058{
9059 struct http_txn *txn = l7;
9060 struct hdr_idx *idx = &txn->hdr_idx;
9061 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9062 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]9063 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9064
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9065 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9066 return 0;
9067
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9068 CHECK_HTTP_MESSAGE_FIRST();
9069
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9070 ctx.idx = 0;
9071 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9072 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]9073 cnt++;
9074
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9075 smp->type = SMP_T_UINT;
9076 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9077 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9078 return 1;
9079}
9080
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9081/* Fetch an HTTP header's integer value. The integer value is returned. It
9082 * takes a mandatory argument of type string and an optional one of type int
9083 * to designate a specific occurrence. It returns an unsigned integer, which
9084 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9085 */
9086static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9087smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9088 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9089{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9090 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9091
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9092 if (ret > 0) {
9093 smp->type = SMP_T_UINT;
9094 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9095 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9096
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9097 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9098}
9099
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9100/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
9101 * and an optional one of type int to designate a specific occurrence.
9102 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9103 */
9104static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9105smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9106 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9107{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9108 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9109
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9110 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9111 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
9112 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9113 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9114 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9115 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9116 if (smp->data.str.len < temp->size - 1) {
9117 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
9118 temp->str[smp->data.str.len] = '\0';
9119 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
9120 smp->type = SMP_T_IPV6;
9121 break;
9122 }
9123 }
9124 }
9125
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9126 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9127 if (!(smp->flags & SMP_F_NOT_LAST))
9128 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9129 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9130 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9131}
9132
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9133/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
9134 * the first '/' after the possible hostname, and ends before the possible '?'.
9135 */
9136static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9137smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9138 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9139{
9140 struct http_txn *txn = l7;
9141 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9142
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9143 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9144
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9145 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]9146 ptr = http_get_path(txn);
9147 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9148 return 0;
9149
9150 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9151 smp->type = SMP_T_CSTR;
9152 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9153
9154 while (ptr < end && *ptr != '?')
9155 ptr++;
9156
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9157 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9158 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9159 return 1;
9160}
9161
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9162/* This produces a concatenation of the first occurrence of the Host header
9163 * followed by the path component if it begins with a slash ('/'). This means
9164 * that '*' will not be added, resulting in exactly the first Host entry.
9165 * If no Host header is found, then the path is returned as-is. The returned
9166 * value is stored in the trash so it does not need to be marked constant.
9167 */
9168static int
9169smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9170 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9171{
9172 struct http_txn *txn = l7;
9173 char *ptr, *end, *beg;
9174 struct hdr_ctx ctx;
9175
9176 CHECK_HTTP_MESSAGE_FIRST();
9177
9178 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9179 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]9180 !ctx.vlen)
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9181 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9182
9183 /* 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]9184 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9185 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]9186 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9187 smp->data.str.len = ctx.vlen;
9188
9189 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9190 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]9191 beg = http_get_path(txn);
9192 if (!beg)
9193 beg = end;
9194
9195 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9196
9197 if (beg < ptr && *beg == '/') {
9198 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
9199 smp->data.str.len += ptr - beg;
9200 }
9201
9202 smp->flags = SMP_F_VOL_1ST;
9203 return 1;
9204}
9205
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9206/* This produces a 32-bit hash of the concatenation of the first occurrence of
9207 * the Host header followed by the path component if it begins with a slash ('/').
9208 * This means that '*' will not be added, resulting in exactly the first Host
9209 * 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]9210 * is hashed using the path hash followed by a full avalanche hash and provides a
9211 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9212 * high-traffic sites without having to store whole paths.
9213 */
9214static int
9215smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9216 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9217{
9218 struct http_txn *txn = l7;
9219 struct hdr_ctx ctx;
9220 unsigned int hash = 0;
9221 char *ptr, *beg, *end;
9222 int len;
9223
9224 CHECK_HTTP_MESSAGE_FIRST();
9225
9226 ctx.idx = 0;
9227 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
9228 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
9229 ptr = ctx.line + ctx.val;
9230 len = ctx.vlen;
9231 while (len--)
9232 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
9233 }
9234
9235 /* now retrieve the path */
9236 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
9237 beg = http_get_path(txn);
9238 if (!beg)
9239 beg = end;
9240
9241 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9242
9243 if (beg < ptr && *beg == '/') {
9244 while (beg < ptr)
9245 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
9246 }
9247 hash = full_hash(hash);
9248
9249 smp->type = SMP_T_UINT;
9250 smp->data.uint = hash;
9251 smp->flags = SMP_F_VOL_1ST;
9252 return 1;
9253}
9254
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9255/* 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]9256 * path as returned by smp_fetch_base32(). The idea is to have per-source and
9257 * per-path counters. The result is a binary block from 8 to 20 bytes depending
9258 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9259 * that in environments where IPv6 is insignificant, truncating the output to
9260 * 8 bytes would still work.
9261 */
9262static int
9263smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9264 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9265{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9266 struct chunk *temp;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9267
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9268 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9269 return 0;
9270
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9271 temp = get_trash_chunk();
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9272 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
9273 temp->len += sizeof(smp->data.uint);
9274
9275 switch (l4->si[0].conn->addr.from.ss_family) {
9276 case AF_INET:
9277 memcpy(temp->str + temp->len, &((struct sockaddr_in *)&l4->si[0].conn->addr.from)->sin_addr, 4);
9278 temp->len += 4;
9279 break;
9280 case AF_INET6:
9281 memcpy(temp->str + temp->len, &((struct sockaddr_in6 *)(&l4->si[0].conn->addr.from))->sin6_addr, 16);
9282 temp->len += 16;
9283 break;
9284 default:
9285 return 0;
9286 }
9287
9288 smp->data.str = *temp;
9289 smp->type = SMP_T_BIN;
9290 return 1;
9291}
9292
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9293static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9294smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9295 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9296{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9297 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9298 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9299 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9300
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9301 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9302
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9303 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9304 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9305 return 1;
9306}
9307
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9308/* return a valid test if the current request is the first one on the connection */
9309static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9310smp_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]9311 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9312{
9313 if (!s)
9314 return 0;
9315
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9316 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9317 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9318 return 1;
9319}
9320
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9321/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9322static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9323smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9324 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9325{
9326
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9327 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9328 return 0;
9329
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9330 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9331
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9332 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9333 return 0;
9334
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9335 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9336 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]9337 return 1;
9338}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9339
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9340/* Accepts exactly 1 argument of type userlist */
9341static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9342smp_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]9343 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9344{
9345
9346 if (!args || args->type != ARGT_USR)
9347 return 0;
9348
9349 CHECK_HTTP_MESSAGE_FIRST();
9350
9351 if (!get_http_auth(l4))
9352 return 0;
9353
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9354 /* pat_match_auth() will need several information at once */
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9355 smp->ctx.a[0] = args->data.usr; /* user list */
9356 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
9357 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
9358
9359 /* if the user does not belong to the userlist or has a wrong password,
9360 * report that it unconditionally does not match. Otherwise we return
9361 * a non-zero integer which will be ignored anyway since all the params
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9362 * that pat_match_auth() will use are in test->ctx.a[0,1,2].
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9363 */
9364 smp->type = SMP_T_BOOL;
9365 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
9366 if (smp->data.uint)
9367 smp->type = SMP_T_UINT;
9368
9369 return 1;
9370}
9371
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9372/* Try to find the next occurrence of a cookie name in a cookie header value.
9373 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
9374 * the cookie value is returned into *value and *value_l, and the function
9375 * returns a pointer to the next pointer to search from if the value was found.
9376 * Otherwise if the cookie was not found, NULL is returned and neither value
9377 * nor value_l are touched. The input <hdr> string should first point to the
9378 * header's value, and the <hdr_end> pointer must point to the first character
9379 * not part of the value. <list> must be non-zero if value may represent a list
9380 * of values (cookie headers). This makes it faster to abort parsing when no
9381 * list is expected.
9382 */
9383static char *
9384extract_cookie_value(char *hdr, const char *hdr_end,
9385 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]9386 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9387{
9388 char *equal, *att_end, *att_beg, *val_beg, *val_end;
9389 char *next;
9390
9391 /* we search at least a cookie name followed by an equal, and more
9392 * generally something like this :
9393 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
9394 */
9395 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
9396 /* Iterate through all cookies on this line */
9397
9398 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
9399 att_beg++;
9400
9401 /* find att_end : this is the first character after the last non
9402 * space before the equal. It may be equal to hdr_end.
9403 */
9404 equal = att_end = att_beg;
9405
9406 while (equal < hdr_end) {
9407 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
9408 break;
9409 if (http_is_spht[(unsigned char)*equal++])
9410 continue;
9411 att_end = equal;
9412 }
9413
9414 /* here, <equal> points to '=', a delimitor or the end. <att_end>
9415 * is between <att_beg> and <equal>, both may be identical.
9416 */
9417
9418 /* look for end of cookie if there is an equal sign */
9419 if (equal < hdr_end && *equal == '=') {
9420 /* look for the beginning of the value */
9421 val_beg = equal + 1;
9422 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
9423 val_beg++;
9424
9425 /* find the end of the value, respecting quotes */
9426 next = find_cookie_value_end(val_beg, hdr_end);
9427
9428 /* make val_end point to the first white space or delimitor after the value */
9429 val_end = next;
9430 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
9431 val_end--;
9432 } else {
9433 val_beg = val_end = next = equal;
9434 }
9435
9436 /* We have nothing to do with attributes beginning with '$'. However,
9437 * they will automatically be removed if a header before them is removed,
9438 * since they're supposed to be linked together.
9439 */
9440 if (*att_beg == '$')
9441 continue;
9442
9443 /* Ignore cookies with no equal sign */
9444 if (equal == next)
9445 continue;
9446
9447 /* Now we have the cookie name between att_beg and att_end, and
9448 * its value between val_beg and val_end.
9449 */
9450
9451 if (att_end - att_beg == cookie_name_l &&
9452 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
9453 /* let's return this value and indicate where to go on from */
9454 *value = val_beg;
9455 *value_l = val_end - val_beg;
9456 return next + 1;
9457 }
9458
9459 /* Set-Cookie headers only have the name in the first attr=value part */
9460 if (!list)
9461 break;
9462 }
9463
9464 return NULL;
9465}
9466
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9467/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9468 * 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]9469 * 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]9470 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9471 * 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]9472 * Accepts exactly 1 argument of type string. If the input options indicate
9473 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9474 */
9475static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9476smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9477 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9478{
9479 struct http_txn *txn = l7;
9480 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9481 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9482 const struct http_msg *msg;
9483 const char *hdr_name;
9484 int hdr_name_len;
9485 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9486 int occ = 0;
9487 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9488
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9489 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9490 return 0;
9491
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9492 if (!ctx) {
9493 /* first call */
9494 ctx = &static_hdr_ctx;
9495 ctx->idx = 0;
9496 smp->ctx.a[2] = ctx;
9497 }
9498
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9499 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9500
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9501 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9502 msg = &txn->req;
9503 hdr_name = "Cookie";
9504 hdr_name_len = 6;
9505 } else {
9506 msg = &txn->rsp;
9507 hdr_name = "Set-Cookie";
9508 hdr_name_len = 10;
9509 }
9510
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9511 if (!occ && !(opt & SMP_OPT_ITERATE))
9512 /* no explicit occurrence and single fetch => last cookie by default */
9513 occ = -1;
9514
9515 /* OK so basically here, either we want only one value and it's the
9516 * last one, or we want to iterate over all of them and we fetch the
9517 * next one.
9518 */
9519
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9520 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9521 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9522 /* search for the header from the beginning, we must first initialize
9523 * the search parameters.
9524 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9525 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9526 ctx->idx = 0;
9527 }
9528
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9529 smp->flags |= SMP_F_VOL_HDR;
9530
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9531 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9532 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
9533 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9534 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
9535 goto out;
9536
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9537 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9538 continue;
9539
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9540 smp->ctx.a[0] = ctx->line + ctx->val;
9541 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9542 }
9543
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9544 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9545 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]9546 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9547 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9548 &smp->data.str.str,
9549 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9550 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9551 found = 1;
9552 if (occ >= 0) {
9553 /* one value was returned into smp->data.str.{str,len} */
9554 smp->flags |= SMP_F_NOT_LAST;
9555 return 1;
9556 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9557 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9558 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9559 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9560 /* all cookie headers and values were scanned. If we're looking for the
9561 * last occurrence, we may return it now.
9562 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9563 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9564 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9565 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9566}
9567
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9568/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9569 * match the name in args and args->data.str.len. If <multi> is non-null, then
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9570 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9571 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9572 */
9573static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9574smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9575 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9576{
9577 struct http_txn *txn = l7;
9578 struct hdr_idx *idx = &txn->hdr_idx;
9579 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9580 const struct http_msg *msg;
9581 const char *hdr_name;
9582 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9583 int cnt;
9584 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9585 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9586
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9587 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9588 return 0;
9589
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9590 CHECK_HTTP_MESSAGE_FIRST();
9591
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9592 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9593 msg = &txn->req;
9594 hdr_name = "Cookie";
9595 hdr_name_len = 6;
9596 } else {
9597 msg = &txn->rsp;
9598 hdr_name = "Set-Cookie";
9599 hdr_name_len = 10;
9600 }
9601
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9602 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]9603 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9604 ctx.idx = 0;
9605 cnt = 0;
9606
9607 while (1) {
9608 /* Note: val_beg == NULL every time we need to fetch a new header */
9609 if (!val_beg) {
9610 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
9611 break;
9612
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9613 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9614 continue;
9615
9616 val_beg = ctx.line + ctx.val;
9617 val_end = val_beg + ctx.vlen;
9618 }
9619
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9620 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9621 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9622 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9623 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9624 &smp->data.str.str,
9625 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9626 cnt++;
9627 }
9628 }
9629
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9630 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9631 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9632 return 1;
9633}
9634
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9635/* Fetch an cookie's integer value. The integer value is returned. It
9636 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
9637 */
9638static int
9639smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9640 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9641{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9642 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9643
9644 if (ret > 0) {
9645 smp->type = SMP_T_UINT;
9646 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9647 }
9648
9649 return ret;
9650}
9651
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9652/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9653/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9654/************************************************************************/
9655
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9656/*
9657 * Given a path string and its length, find the position of beginning of the
9658 * query string. Returns NULL if no query string is found in the path.
9659 *
9660 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
9661 *
9662 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
9663 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9664static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9665{
9666 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]9667
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9668 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9669 return p ? p + 1 : NULL;
9670}
9671
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9672static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9673{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9674 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9675}
9676
9677/*
9678 * Given a url parameter, find the starting position of the first occurence,
9679 * or NULL if the parameter is not found.
9680 *
9681 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
9682 * the function will return query_string+8.
9683 */
9684static char*
9685find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9686 char* url_param_name, size_t url_param_name_l,
9687 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9688{
9689 char *pos, *last;
9690
9691 pos = query_string;
9692 last = query_string + query_string_l - url_param_name_l - 1;
9693
9694 while (pos <= last) {
9695 if (pos[url_param_name_l] == '=') {
9696 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
9697 return pos;
9698 pos += url_param_name_l + 1;
9699 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9700 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9701 pos++;
9702 pos++;
9703 }
9704 return NULL;
9705}
9706
9707/*
9708 * Given a url parameter name, returns its value and size into *value and
9709 * *value_l respectively, and returns non-zero. If the parameter is not found,
9710 * zero is returned and value/value_l are not touched.
9711 */
9712static int
9713find_url_param_value(char* path, size_t path_l,
9714 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9715 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9716{
9717 char *query_string, *qs_end;
9718 char *arg_start;
9719 char *value_start, *value_end;
9720
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9721 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9722 if (!query_string)
9723 return 0;
9724
9725 qs_end = path + path_l;
9726 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9727 url_param_name, url_param_name_l,
9728 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9729 if (!arg_start)
9730 return 0;
9731
9732 value_start = arg_start + url_param_name_l + 1;
9733 value_end = value_start;
9734
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9735 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9736 value_end++;
9737
9738 *value = value_start;
9739 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]9740 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9741}
9742
9743static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9744smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9745 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9746{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9747 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9748 struct http_txn *txn = l7;
9749 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9750
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9751 if (!args || args[0].type != ARGT_STR ||
9752 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9753 return 0;
9754
9755 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9756
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9757 if (args[1].type)
9758 delim = *args[1].data.str.str;
9759
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9760 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]9761 args->data.str.str, args->data.str.len,
9762 &smp->data.str.str, &smp->data.str.len,
9763 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9764 return 0;
9765
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]9766 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9767 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9768 return 1;
9769}
9770
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9771/* Return the signed integer value for the specified url parameter (see url_param
9772 * above).
9773 */
9774static int
9775smp_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]9776 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9777{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9778 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9779
9780 if (ret > 0) {
9781 smp->type = SMP_T_UINT;
9782 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9783 }
9784
9785 return ret;
9786}
9787
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9788/* This produces a 32-bit hash of the concatenation of the first occurrence of
9789 * the Host header followed by the path component if it begins with a slash ('/').
9790 * This means that '*' will not be added, resulting in exactly the first Host
9791 * entry. If no Host header is found, then the path is used. The resulting value
9792 * is hashed using the url hash followed by a full avalanche hash and provides a
9793 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
9794 * high-traffic sites without having to store whole paths.
9795 * this differs from the base32 functions in that it includes the url parameters
9796 * as well as the path
9797 */
9798static int
9799smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]9800 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9801{
9802 struct http_txn *txn = l7;
9803 struct hdr_ctx ctx;
9804 unsigned int hash = 0;
9805 char *ptr, *beg, *end;
9806 int len;
9807
9808 CHECK_HTTP_MESSAGE_FIRST();
9809
9810 ctx.idx = 0;
9811 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
9812 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
9813 ptr = ctx.line + ctx.val;
9814 len = ctx.vlen;
9815 while (len--)
9816 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
9817 }
9818
9819 /* now retrieve the path */
9820 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
9821 beg = http_get_path(txn);
9822 if (!beg)
9823 beg = end;
9824
9825 for (ptr = beg; ptr < end ; ptr++);
9826
9827 if (beg < ptr && *beg == '/') {
9828 while (beg < ptr)
9829 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
9830 }
9831 hash = full_hash(hash);
9832
9833 smp->type = SMP_T_UINT;
9834 smp->data.uint = hash;
9835 smp->flags = SMP_F_VOL_1ST;
9836 return 1;
9837}
9838
9839/* This concatenates the source address with the 32-bit hash of the Host and
9840 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
9841 * per-url counters. The result is a binary block from 8 to 20 bytes depending
9842 * on the source address length. The URL hash is stored before the address so
9843 * that in environments where IPv6 is insignificant, truncating the output to
9844 * 8 bytes would still work.
9845 */
9846static int
9847smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]9848 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9849{
9850 struct chunk *temp;
9851
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]9852 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9853 return 0;
9854
9855 temp = get_trash_chunk();
9856 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
9857 temp->len += sizeof(smp->data.uint);
9858
9859 switch (l4->si[0].conn->addr.from.ss_family) {
9860 case AF_INET:
9861 memcpy(temp->str + temp->len, &((struct sockaddr_in *)&l4->si[0].conn->addr.from)->sin_addr, 4);
9862 temp->len += 4;
9863 break;
9864 case AF_INET6:
9865 memcpy(temp->str + temp->len, &((struct sockaddr_in6 *)(&l4->si[0].conn->addr.from))->sin6_addr, 16);
9866 temp->len += 16;
9867 break;
9868 default:
9869 return 0;
9870 }
9871
9872 smp->data.str = *temp;
9873 smp->type = SMP_T_BIN;
9874 return 1;
9875}
9876
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9877/* This function is used to validate the arguments passed to any "hdr" fetch
9878 * keyword. These keywords support an optional positive or negative occurrence
9879 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
9880 * is assumed that the types are already the correct ones. Returns 0 on error,
9881 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
9882 * error message in case of error, that the caller is responsible for freeing.
9883 * The initial location must either be freeable or NULL.
9884 */
9885static int val_hdr(struct arg *arg, char **err_msg)
9886{
9887 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]9888 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9889 return 0;
9890 }
9891 return 1;
9892}
9893
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]9894/* takes an UINT value on input supposed to represent the time since EPOCH,
9895 * adds an optional offset found in args[0] and emits a string representing
9896 * the date in RFC-1123/5322 format.
9897 */
9898static int sample_conv_http_date(const struct arg *args, struct sample *smp)
9899{
9900 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
9901 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
9902 struct chunk *temp;
9903 struct tm *tm;
9904 time_t curr_date = smp->data.uint;
9905
9906 /* add offset */
9907 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
9908 curr_date += args[0].data.sint;
9909
9910 tm = gmtime(&curr_date);
9911
9912 temp = get_trash_chunk();
9913 temp->len = snprintf(temp->str, temp->size - temp->len,
9914 "%s, %02d %s %04d %02d:%02d:%02d GMT",
9915 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
9916 tm->tm_hour, tm->tm_min, tm->tm_sec);
9917
9918 smp->data.str = *temp;
9919 smp->type = SMP_T_STR;
9920 return 1;
9921}
9922
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9923/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9924/* All supported ACL keywords must be declared here. */
9925/************************************************************************/
9926
9927/* Note: must not be declared <const> as its list will be overwritten.
9928 * Please take care of keeping this list alphabetically sorted.
9929 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]9930static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9931 { "base", "base", pat_parse_str, pat_match_str },
9932 { "base_beg", "base", pat_parse_str, pat_match_beg },
9933 { "base_dir", "base", pat_parse_str, pat_match_dir },
9934 { "base_dom", "base", pat_parse_str, pat_match_dom },
9935 { "base_end", "base", pat_parse_str, pat_match_end },
9936 { "base_len", "base", pat_parse_int, pat_match_len },
9937 { "base_reg", "base", pat_parse_reg, pat_match_reg },
9938 { "base_sub", "base", pat_parse_str, pat_match_sub },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9939
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9940 { "cook", "req.cook", pat_parse_str, pat_match_str },
9941 { "cook_beg", "req.cook", pat_parse_str, pat_match_beg },
9942 { "cook_dir", "req.cook", pat_parse_str, pat_match_dir },
9943 { "cook_dom", "req.cook", pat_parse_str, pat_match_dom },
9944 { "cook_end", "req.cook", pat_parse_str, pat_match_end },
9945 { "cook_len", "req.cook", pat_parse_int, pat_match_len },
9946 { "cook_reg", "req.cook", pat_parse_reg, pat_match_reg },
9947 { "cook_sub", "req.cook", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9948
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9949 { "hdr", "req.hdr", pat_parse_str, pat_match_str },
9950 { "hdr_beg", "req.hdr", pat_parse_str, pat_match_beg },
9951 { "hdr_dir", "req.hdr", pat_parse_str, pat_match_dir },
9952 { "hdr_dom", "req.hdr", pat_parse_str, pat_match_dom },
9953 { "hdr_end", "req.hdr", pat_parse_str, pat_match_end },
9954 { "hdr_len", "req.hdr", pat_parse_int, pat_match_len },
9955 { "hdr_reg", "req.hdr", pat_parse_reg, pat_match_reg },
9956 { "hdr_sub", "req.hdr", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9957
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9958 { "http_auth_group", NULL, pat_parse_strcat, pat_match_auth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9959
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9960 { "method", NULL, pat_parse_meth, pat_match_meth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9961
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9962 { "path", "path", pat_parse_str, pat_match_str },
9963 { "path_beg", "path", pat_parse_str, pat_match_beg },
9964 { "path_dir", "path", pat_parse_str, pat_match_dir },
9965 { "path_dom", "path", pat_parse_str, pat_match_dom },
9966 { "path_end", "path", pat_parse_str, pat_match_end },
9967 { "path_len", "path", pat_parse_int, pat_match_len },
9968 { "path_reg", "path", pat_parse_reg, pat_match_reg },
9969 { "path_sub", "path", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9970
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9971 { "req_ver", "req.ver", pat_parse_str, pat_match_str },
9972 { "resp_ver", "res.ver", pat_parse_str, pat_match_str },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9973
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9974 { "scook", "res.cook", pat_parse_str, pat_match_str },
9975 { "scook_beg", "res.cook", pat_parse_str, pat_match_beg },
9976 { "scook_dir", "res.cook", pat_parse_str, pat_match_dir },
9977 { "scook_dom", "res.cook", pat_parse_str, pat_match_dom },
9978 { "scook_end", "res.cook", pat_parse_str, pat_match_end },
9979 { "scook_len", "res.cook", pat_parse_int, pat_match_len },
9980 { "scook_reg", "res.cook", pat_parse_reg, pat_match_reg },
9981 { "scook_sub", "res.cook", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9982
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9983 { "shdr", "res.hdr", pat_parse_str, pat_match_str },
9984 { "shdr_beg", "res.hdr", pat_parse_str, pat_match_beg },
9985 { "shdr_dir", "res.hdr", pat_parse_str, pat_match_dir },
9986 { "shdr_dom", "res.hdr", pat_parse_str, pat_match_dom },
9987 { "shdr_end", "res.hdr", pat_parse_str, pat_match_end },
9988 { "shdr_len", "res.hdr", pat_parse_int, pat_match_len },
9989 { "shdr_reg", "res.hdr", pat_parse_reg, pat_match_reg },
9990 { "shdr_sub", "res.hdr", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9991
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9992 { "url", "url", pat_parse_str, pat_match_str },
9993 { "url_beg", "url", pat_parse_str, pat_match_beg },
9994 { "url_dir", "url", pat_parse_str, pat_match_dir },
9995 { "url_dom", "url", pat_parse_str, pat_match_dom },
9996 { "url_end", "url", pat_parse_str, pat_match_end },
9997 { "url_len", "url", pat_parse_int, pat_match_len },
9998 { "url_reg", "url", pat_parse_reg, pat_match_reg },
9999 { "url_sub", "url", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10000
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10001 { "urlp", "urlp", pat_parse_str, pat_match_str },
10002 { "urlp_beg", "urlp", pat_parse_str, pat_match_beg },
10003 { "urlp_dir", "urlp", pat_parse_str, pat_match_dir },
10004 { "urlp_dom", "urlp", pat_parse_str, pat_match_dom },
10005 { "urlp_end", "urlp", pat_parse_str, pat_match_end },
10006 { "urlp_len", "urlp", pat_parse_int, pat_match_len },
10007 { "urlp_reg", "urlp", pat_parse_reg, pat_match_reg },
10008 { "urlp_sub", "urlp", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10009
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]10010 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10011}};
10012
10013/************************************************************************/
10014/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10015/************************************************************************/
10016/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]10017static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10018 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10019 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10020 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
10021
10022 /* cookie is valid in both directions (eg: for "stick ...") but cook*
10023 * are only here to match the ACL's name, are request-only and are used
10024 * for ACL compatibility only.
10025 */
10026 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10027 { "cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
10028 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10029 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10030
10031 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
10032 * only here to match the ACL's name, are request-only and are used for
10033 * ACL compatibility only.
10034 */
10035 { "hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
10036 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10037 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10038 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10039
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]10040 { "http_auth", smp_fetch_http_auth, ARG1(1,USR), NULL, SMP_T_BOOL, SMP_USE_HRQHV },
10041 { "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]10042 { "http_first_req", smp_fetch_http_first_req, 0, NULL, SMP_T_BOOL, SMP_USE_HRQHP },
10043 { "method", smp_fetch_meth, 0, NULL, SMP_T_UINT, SMP_USE_HRQHP },
10044 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10045
10046 /* HTTP protocol on the request path */
10047 { "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]10048 { "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]10049
10050 /* HTTP version on the request path */
10051 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10052 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10053
10054 /* HTTP version on the response path */
10055 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_CSTR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10056 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10057
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10058 /* explicit req.{cook,hdr} are used to force the fetch direction to be request-only */
10059 { "req.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10060 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10061 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10062
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10063 { "req.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV },
10064 { "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]10065 { "req.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV },
10066 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10067 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10068 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10069
10070 /* explicit req.{cook,hdr} are used to force the fetch direction to be response-only */
10071 { "res.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10072 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10073 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10074
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10075 { "res.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10076 { "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]10077 { "res.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10078 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10079 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10080 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10081
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10082 /* scook is valid only on the response and is used for ACL compatibility */
10083 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10084 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10085 { "scook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10086 { "set-cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV }, /* deprecated */
10087
10088 /* shdr is valid only on the response and is used for ACL compatibility */
10089 { "shdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10090 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10091 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10092 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10093
10094 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
10095 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10096 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10097 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10098 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
10099 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10100 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10101 { "urlp" , smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10102 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10103 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10104}};
10105
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10106
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10107/* Note: must not be declared <const> as its list will be overwritten */
10108static struct sample_conv_kw_list sample_conv_kws = {ILH, {
10109 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR },
10110 { NULL, NULL, 0, 0, 0 },
10111}};
10112
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10113__attribute__((constructor))
10114static void __http_protocol_init(void)
10115{
10116 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10117 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10118 sample_register_convs(&sample_conv_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10119}
10120
10121
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]10122/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]10123 * Local variables:
10124 * c-indent-level: 8
10125 * c-basic-offset: 8
10126 * End:
10127 */