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git01.mediatek.com / haproxy / 9f708ab7070bce622d867eca3947256d50d9619d / . / src / proto_http.c
blob: 2c6e27273c18c9bf37cfffec0615b0434f350f22 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]28#include <common/appsession.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]29#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]30#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]31#include <common/compat.h>
32#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]33#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/memory.h>
35#include <common/mini-clist.h>
36#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]37#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]38#include <common/time.h>
39#include <common/uri_auth.h>
40#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]41
42#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]46#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]47#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]48#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]49#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]50#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]51#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]52#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]54#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]55#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]56#include <proto/hdr_idx.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]57#include <proto/pattern.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]58#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]59#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]60#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]61#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]62#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]63#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]64#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]65#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]66#include <proto/task.h>
67
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]68const char HTTP_100[] =
69 "HTTP/1.1 100 Continue\r\n\r\n";
70
71const struct chunk http_100_chunk = {
72 .str = (char *)&HTTP_100,
73 .len = sizeof(HTTP_100)-1
74};
75
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]76/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]77const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]78 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]79 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]80 "Location: "; /* not terminated since it will be concatenated with the URL */
81
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]82const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]83 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]84 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]85 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86 "Location: "; /* not terminated since it will be concatenated with the URL */
87
88/* same as 302 except that the browser MUST retry with the GET method */
89const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]90 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]91 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]92 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]93 "Location: "; /* not terminated since it will be concatenated with the URL */
94
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]95
96/* same as 302 except that the browser MUST retry with the same method */
97const char *HTTP_307 =
98 "HTTP/1.1 307 Temporary Redirect\r\n"
99 "Cache-Control: no-cache\r\n"
100 "Content-length: 0\r\n"
101 "Location: "; /* not terminated since it will be concatenated with the URL */
102
103/* same as 301 except that the browser MUST retry with the same method */
104const char *HTTP_308 =
105 "HTTP/1.1 308 Permanent Redirect\r\n"
106 "Content-length: 0\r\n"
107 "Location: "; /* not terminated since it will be concatenated with the URL */
108
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]109/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
110const char *HTTP_401_fmt =
111 "HTTP/1.0 401 Unauthorized\r\n"
112 "Cache-Control: no-cache\r\n"
113 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]114 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]115 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
116 "\r\n"
117 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
118
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]119const char *HTTP_407_fmt =
120 "HTTP/1.0 407 Unauthorized\r\n"
121 "Cache-Control: no-cache\r\n"
122 "Connection: close\r\n"
123 "Content-Type: text/html\r\n"
124 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
125 "\r\n"
126 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
127
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]128
129const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]130 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]131 [HTTP_ERR_400] = 400,
132 [HTTP_ERR_403] = 403,
133 [HTTP_ERR_408] = 408,
134 [HTTP_ERR_500] = 500,
135 [HTTP_ERR_502] = 502,
136 [HTTP_ERR_503] = 503,
137 [HTTP_ERR_504] = 504,
138};
139
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]140static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]141 [HTTP_ERR_200] =
142 "HTTP/1.0 200 OK\r\n"
143 "Cache-Control: no-cache\r\n"
144 "Connection: close\r\n"
145 "Content-Type: text/html\r\n"
146 "\r\n"
147 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
148
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]149 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]150 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]151 "Cache-Control: no-cache\r\n"
152 "Connection: close\r\n"
153 "Content-Type: text/html\r\n"
154 "\r\n"
155 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
156
157 [HTTP_ERR_403] =
158 "HTTP/1.0 403 Forbidden\r\n"
159 "Cache-Control: no-cache\r\n"
160 "Connection: close\r\n"
161 "Content-Type: text/html\r\n"
162 "\r\n"
163 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
164
165 [HTTP_ERR_408] =
166 "HTTP/1.0 408 Request Time-out\r\n"
167 "Cache-Control: no-cache\r\n"
168 "Connection: close\r\n"
169 "Content-Type: text/html\r\n"
170 "\r\n"
171 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
172
173 [HTTP_ERR_500] =
174 "HTTP/1.0 500 Server Error\r\n"
175 "Cache-Control: no-cache\r\n"
176 "Connection: close\r\n"
177 "Content-Type: text/html\r\n"
178 "\r\n"
179 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
180
181 [HTTP_ERR_502] =
182 "HTTP/1.0 502 Bad Gateway\r\n"
183 "Cache-Control: no-cache\r\n"
184 "Connection: close\r\n"
185 "Content-Type: text/html\r\n"
186 "\r\n"
187 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
188
189 [HTTP_ERR_503] =
190 "HTTP/1.0 503 Service Unavailable\r\n"
191 "Cache-Control: no-cache\r\n"
192 "Connection: close\r\n"
193 "Content-Type: text/html\r\n"
194 "\r\n"
195 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
196
197 [HTTP_ERR_504] =
198 "HTTP/1.0 504 Gateway Time-out\r\n"
199 "Cache-Control: no-cache\r\n"
200 "Connection: close\r\n"
201 "Content-Type: text/html\r\n"
202 "\r\n"
203 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
204
205};
206
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]207/* status codes available for the stats admin page (strictly 4 chars length) */
208const char *stat_status_codes[STAT_STATUS_SIZE] = {
209 [STAT_STATUS_DENY] = "DENY",
210 [STAT_STATUS_DONE] = "DONE",
211 [STAT_STATUS_ERRP] = "ERRP",
212 [STAT_STATUS_EXCD] = "EXCD",
213 [STAT_STATUS_NONE] = "NONE",
214 [STAT_STATUS_PART] = "PART",
215 [STAT_STATUS_UNKN] = "UNKN",
216};
217
218
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]219/* We must put the messages here since GCC cannot initialize consts depending
220 * on strlen().
221 */
222struct chunk http_err_chunks[HTTP_ERR_SIZE];
223
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]224/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
225static struct hdr_ctx static_hdr_ctx;
226
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]227#define FD_SETS_ARE_BITFIELDS
228#ifdef FD_SETS_ARE_BITFIELDS
229/*
230 * This map is used with all the FD_* macros to check whether a particular bit
231 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
232 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
233 * byte should be encoded. Be careful to always pass bytes from 0 to 255
234 * exclusively to the macros.
235 */
236fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
237fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
238
239#else
240#error "Check if your OS uses bitfields for fd_sets"
241#endif
242
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]243void init_proto_http()
244{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]245 int i;
246 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]247 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]248
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]249 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
250 if (!http_err_msgs[msg]) {
251 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
252 abort();
253 }
254
255 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
256 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
257 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]258
259 /* initialize the log header encoding map : '{|}"#' should be encoded with
260 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
261 * URL encoding only requires '"', '#' to be encoded as well as non-
262 * printable characters above.
263 */
264 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
265 memset(url_encode_map, 0, sizeof(url_encode_map));
266 for (i = 0; i < 32; i++) {
267 FD_SET(i, hdr_encode_map);
268 FD_SET(i, url_encode_map);
269 }
270 for (i = 127; i < 256; i++) {
271 FD_SET(i, hdr_encode_map);
272 FD_SET(i, url_encode_map);
273 }
274
275 tmp = "\"#{|}";
276 while (*tmp) {
277 FD_SET(*tmp, hdr_encode_map);
278 tmp++;
279 }
280
281 tmp = "\"#";
282 while (*tmp) {
283 FD_SET(*tmp, url_encode_map);
284 tmp++;
285 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]286
287 /* memory allocations */
288 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]289 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]290}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]291
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]292/*
293 * We have 26 list of methods (1 per first letter), each of which can have
294 * up to 3 entries (2 valid, 1 null).
295 */
296struct http_method_desc {
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]297 enum http_meth_t meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]298 int len;
299 const char text[8];
300};
301
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]302const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]303 ['C' - 'A'] = {
304 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
305 },
306 ['D' - 'A'] = {
307 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
308 },
309 ['G' - 'A'] = {
310 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
311 },
312 ['H' - 'A'] = {
313 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
314 },
315 ['P' - 'A'] = {
316 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
317 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
318 },
319 ['T' - 'A'] = {
320 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
321 },
322 /* rest is empty like this :
323 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
324 */
325};
326
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]327/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]328 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]329 * RFC2616 for those chars.
330 */
331
332const char http_is_spht[256] = {
333 [' '] = 1, ['\t'] = 1,
334};
335
336const char http_is_crlf[256] = {
337 ['\r'] = 1, ['\n'] = 1,
338};
339
340const char http_is_lws[256] = {
341 [' '] = 1, ['\t'] = 1,
342 ['\r'] = 1, ['\n'] = 1,
343};
344
345const char http_is_sep[256] = {
346 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
347 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
348 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
349 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
350 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
351};
352
353const char http_is_ctl[256] = {
354 [0 ... 31] = 1,
355 [127] = 1,
356};
357
358/*
359 * A token is any ASCII char that is neither a separator nor a CTL char.
360 * Do not overwrite values in assignment since gcc-2.95 will not handle
361 * them correctly. Instead, define every non-CTL char's status.
362 */
363const char http_is_token[256] = {
364 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
365 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
366 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
367 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
368 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
369 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
370 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
371 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
372 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
373 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
374 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
375 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
376 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
377 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
378 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
379 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
380 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
381 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
382 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
383 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
384 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
385 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
386 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
387 ['|'] = 1, ['}'] = 0, ['~'] = 1,
388};
389
390
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]391/*
392 * An http ver_token is any ASCII which can be found in an HTTP version,
393 * which includes 'H', 'T', 'P', '/', '.' and any digit.
394 */
395const char http_is_ver_token[256] = {
396 ['.'] = 1, ['/'] = 1,
397 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
398 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
399 ['H'] = 1, ['P'] = 1, ['T'] = 1,
400};
401
402
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]403/*
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]404 * Silent debug that outputs only in strace, using fd #-1. Trash is modified.
405 */
406#if defined(DEBUG_FSM)
407static void http_silent_debug(int line, struct session *s)
408{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]409 chunk_printf(&trash,
410 "[%04d] req: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld tf=%08x\n",
411 line,
412 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
413 s->req->buf->data, s->req->buf->size, s->req->l, s->req->w, s->req->r, s->req->buf->p, s->req->buf->o, s->req->to_forward, s->txn.flags);
414 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]415
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]416 chunk_printf(&trash,
417 " %04d rep: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld\n",
418 line,
419 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
420 s->rep->buf->data, s->rep->buf->size, s->rep->l, s->rep->w, s->rep->r, s->rep->buf->p, s->rep->buf->o, s->rep->to_forward);
421 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]422}
423#else
424#define http_silent_debug(l,s) do { } while (0)
425#endif
426
427/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]428 * Adds a header and its CRLF at the tail of the message's buffer, just before
429 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]430 * The header is also automatically added to the index <hdr_idx>, and the end
431 * of headers is automatically adjusted. The number of bytes added is returned
432 * on success, otherwise <0 is returned indicating an error.
433 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]434int http_header_add_tail(struct http_msg *msg, struct hdr_idx *hdr_idx, const char *text)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]435{
436 int bytes, len;
437
438 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]439 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]440 if (!bytes)
441 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]442 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]443 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
444}
445
446/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]447 * Adds a header and its CRLF at the tail of the message's buffer, just before
448 * the last CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]449 * the buffer is only opened and the space reserved, but nothing is copied.
450 * The header is also automatically added to the index <hdr_idx>, and the end
451 * of headers is automatically adjusted. The number of bytes added is returned
452 * on success, otherwise <0 is returned indicating an error.
453 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]454int http_header_add_tail2(struct http_msg *msg,
455 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]456{
457 int bytes;
458
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]459 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]460 if (!bytes)
461 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]462 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]463 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
464}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]465
466/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]467 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
468 * If so, returns the position of the first non-space character relative to
469 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
470 * to return a pointer to the place after the first space. Returns 0 if the
471 * header name does not match. Checks are case-insensitive.
472 */
473int http_header_match2(const char *hdr, const char *end,
474 const char *name, int len)
475{
476 const char *val;
477
478 if (hdr + len >= end)
479 return 0;
480 if (hdr[len] != ':')
481 return 0;
482 if (strncasecmp(hdr, name, len) != 0)
483 return 0;
484 val = hdr + len + 1;
485 while (val < end && HTTP_IS_SPHT(*val))
486 val++;
487 if ((val >= end) && (len + 2 <= end - hdr))
488 return len + 2; /* we may replace starting from second space */
489 return val - hdr;
490}
491
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]492/* Find the first or next occurrence of header <name> in message buffer <sol>
493 * using headers index <idx>, and return it in the <ctx> structure. This
494 * structure holds everything necessary to use the header and find next
495 * occurrence. If its <idx> member is 0, the header is searched from the
496 * beginning. Otherwise, the next occurrence is returned. The function returns
497 * 1 when it finds a value, and 0 when there is no more. It is very similar to
498 * http_find_header2() except that it is designed to work with full-line headers
499 * whose comma is not a delimiter but is part of the syntax. As a special case,
500 * if ctx->val is NULL when searching for a new values of a header, the current
501 * header is rescanned. This allows rescanning after a header deletion.
502 */
503int http_find_full_header2(const char *name, int len,
504 char *sol, struct hdr_idx *idx,
505 struct hdr_ctx *ctx)
506{
507 char *eol, *sov;
508 int cur_idx, old_idx;
509
510 cur_idx = ctx->idx;
511 if (cur_idx) {
512 /* We have previously returned a header, let's search another one */
513 sol = ctx->line;
514 eol = sol + idx->v[cur_idx].len;
515 goto next_hdr;
516 }
517
518 /* first request for this header */
519 sol += hdr_idx_first_pos(idx);
520 old_idx = 0;
521 cur_idx = hdr_idx_first_idx(idx);
522 while (cur_idx) {
523 eol = sol + idx->v[cur_idx].len;
524
525 if (len == 0) {
526 /* No argument was passed, we want any header.
527 * To achieve this, we simply build a fake request. */
528 while (sol + len < eol && sol[len] != ':')
529 len++;
530 name = sol;
531 }
532
533 if ((len < eol - sol) &&
534 (sol[len] == ':') &&
535 (strncasecmp(sol, name, len) == 0)) {
536 ctx->del = len;
537 sov = sol + len + 1;
538 while (sov < eol && http_is_lws[(unsigned char)*sov])
539 sov++;
540
541 ctx->line = sol;
542 ctx->prev = old_idx;
543 ctx->idx = cur_idx;
544 ctx->val = sov - sol;
545 ctx->tws = 0;
546 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
547 eol--;
548 ctx->tws++;
549 }
550 ctx->vlen = eol - sov;
551 return 1;
552 }
553 next_hdr:
554 sol = eol + idx->v[cur_idx].cr + 1;
555 old_idx = cur_idx;
556 cur_idx = idx->v[cur_idx].next;
557 }
558 return 0;
559}
560
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]561/* Find the end of the header value contained between <s> and <e>. See RFC2616,
562 * par 2.2 for more information. Note that it requires a valid header to return
563 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]564 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]565char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]566{
567 int quoted, qdpair;
568
569 quoted = qdpair = 0;
570 for (; s < e; s++) {
571 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]572 else if (quoted) {
573 if (*s == '\\') qdpair = 1;
574 else if (*s == '"') quoted = 0;
575 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]576 else if (*s == '"') quoted = 1;
577 else if (*s == ',') return s;
578 }
579 return s;
580}
581
582/* Find the first or next occurrence of header <name> in message buffer <sol>
583 * using headers index <idx>, and return it in the <ctx> structure. This
584 * structure holds everything necessary to use the header and find next
585 * occurrence. If its <idx> member is 0, the header is searched from the
586 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]587 * 1 when it finds a value, and 0 when there is no more. It is designed to work
588 * with headers defined as comma-separated lists. As a special case, if ctx->val
589 * is NULL when searching for a new values of a header, the current header is
590 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]591 */
592int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]593 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]594 struct hdr_ctx *ctx)
595{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]596 char *eol, *sov;
597 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]598
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]599 cur_idx = ctx->idx;
600 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]601 /* We have previously returned a value, let's search
602 * another one on the same line.
603 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]604 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]605 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]606 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]607 eol = sol + idx->v[cur_idx].len;
608
609 if (sov >= eol)
610 /* no more values in this header */
611 goto next_hdr;
612
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]613 /* values remaining for this header, skip the comma but save it
614 * for later use (eg: for header deletion).
615 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]616 sov++;
617 while (sov < eol && http_is_lws[(unsigned char)*sov])
618 sov++;
619
620 goto return_hdr;
621 }
622
623 /* first request for this header */
624 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]625 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]626 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]627 while (cur_idx) {
628 eol = sol + idx->v[cur_idx].len;
629
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]630 if (len == 0) {
631 /* No argument was passed, we want any header.
632 * To achieve this, we simply build a fake request. */
633 while (sol + len < eol && sol[len] != ':')
634 len++;
635 name = sol;
636 }
637
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]638 if ((len < eol - sol) &&
639 (sol[len] == ':') &&
640 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]641 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]642 sov = sol + len + 1;
643 while (sov < eol && http_is_lws[(unsigned char)*sov])
644 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]645
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]646 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]647 ctx->prev = old_idx;
648 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]649 ctx->idx = cur_idx;
650 ctx->val = sov - sol;
651
652 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]653 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]654 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]655 eol--;
656 ctx->tws++;
657 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]658 ctx->vlen = eol - sov;
659 return 1;
660 }
661 next_hdr:
662 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]663 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]664 cur_idx = idx->v[cur_idx].next;
665 }
666 return 0;
667}
668
669int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]670 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]671 struct hdr_ctx *ctx)
672{
673 return http_find_header2(name, strlen(name), sol, idx, ctx);
674}
675
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]676/* Remove one value of a header. This only works on a <ctx> returned by one of
677 * the http_find_header functions. The value is removed, as well as surrounding
678 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]679 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]680 * message <msg>. The new index is returned. If it is zero, it means there is
681 * no more header, so any processing may stop. The ctx is always left in a form
682 * that can be handled by http_find_header2() to find next occurrence.
683 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]684int http_remove_header2(struct http_msg *msg, struct hdr_idx *idx, struct hdr_ctx *ctx)
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]685{
686 int cur_idx = ctx->idx;
687 char *sol = ctx->line;
688 struct hdr_idx_elem *hdr;
689 int delta, skip_comma;
690
691 if (!cur_idx)
692 return 0;
693
694 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]695 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]696 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]697 delta = buffer_replace2(msg->chn->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]698 http_msg_move_end(msg, delta);
699 idx->used--;
700 hdr->len = 0; /* unused entry */
701 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]702 if (idx->tail == ctx->idx)
703 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]704 ctx->idx = ctx->prev; /* walk back to the end of previous header */
705 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
706 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]707 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]708 return ctx->idx;
709 }
710
711 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]712 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
713 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]714 */
715
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]716 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]717 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]718 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]719 NULL, 0);
720 hdr->len += delta;
721 http_msg_move_end(msg, delta);
722 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]723 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]724 return ctx->idx;
725}
726
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]727/* This function handles a server error at the stream interface level. The
728 * stream interface is assumed to be already in a closed state. An optional
729 * message is copied into the input buffer, and an HTTP status code stored.
730 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]731 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]732 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]733static void http_server_error(struct session *t, struct stream_interface *si,
734 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]735{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]736 channel_auto_read(si->ob);
737 channel_abort(si->ob);
738 channel_auto_close(si->ob);
739 channel_erase(si->ob);
740 channel_auto_close(si->ib);
741 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]742 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]743 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]744 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]745 }
746 if (!(t->flags & SN_ERR_MASK))
747 t->flags |= err;
748 if (!(t->flags & SN_FINST_MASK))
749 t->flags |= finst;
750}
751
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]752/* This function returns the appropriate error location for the given session
753 * and message.
754 */
755
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]756struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]757{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]758 if (s->be->errmsg[msgnum].str)
759 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]760 else if (s->fe->errmsg[msgnum].str)
761 return &s->fe->errmsg[msgnum];
762 else
763 return &http_err_chunks[msgnum];
764}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]765
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]766/*
767 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
768 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
769 */
Willy Tarreauc8987b32013-12-06 23:43:17 +0100[diff] [blame]770static enum http_meth_t find_http_meth(const char *str, const int len)
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]771{
772 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]773 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]774
775 m = ((unsigned)*str - 'A');
776
777 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]778 for (h = http_methods[m]; h->len > 0; h++) {
779 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]780 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]781 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]782 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]783 };
784 return HTTP_METH_OTHER;
785 }
786 return HTTP_METH_NONE;
787
788}
789
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]790/* Parse the URI from the given transaction (which is assumed to be in request
791 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
792 * It is returned otherwise.
793 */
794static char *
795http_get_path(struct http_txn *txn)
796{
797 char *ptr, *end;
798
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]799 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]800 end = ptr + txn->req.sl.rq.u_l;
801
802 if (ptr >= end)
803 return NULL;
804
805 /* RFC2616, par. 5.1.2 :
806 * Request-URI = "*" | absuri | abspath | authority
807 */
808
809 if (*ptr == '*')
810 return NULL;
811
812 if (isalpha((unsigned char)*ptr)) {
813 /* this is a scheme as described by RFC3986, par. 3.1 */
814 ptr++;
815 while (ptr < end &&
816 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
817 ptr++;
818 /* skip '://' */
819 if (ptr == end || *ptr++ != ':')
820 return NULL;
821 if (ptr == end || *ptr++ != '/')
822 return NULL;
823 if (ptr == end || *ptr++ != '/')
824 return NULL;
825 }
826 /* skip [user[:passwd]@]host[:[port]] */
827
828 while (ptr < end && *ptr != '/')
829 ptr++;
830
831 if (ptr == end)
832 return NULL;
833
834 /* OK, we got the '/' ! */
835 return ptr;
836}
837
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]838/* Returns a 302 for a redirectable request that reaches a server working in
839 * in redirect mode. This may only be called just after the stream interface
840 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
841 * follow normal proxy processing. NOTE: this function is designed to support
842 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]843 */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]844void http_perform_server_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]845{
846 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]847 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]848 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]849 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]850
851 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]852 trash.len = strlen(HTTP_302);
853 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]854
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]855 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]856
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]857 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]858 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]859 return;
860
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]861 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]862 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]863 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
864 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]865 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]866
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]867 /* 3: add the request URI. Since it was already forwarded, we need
868 * to temporarily rewind the buffer.
869 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]870 txn = &s->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]871 b_rew(s->req->buf, rewind = s->req->buf->o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]872
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]873 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]874 len = buffer_count(s->req->buf, path, b_ptr(s->req->buf, txn->req.sl.rq.u + txn->req.sl.rq.u_l));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]875
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]876 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]877
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]878 if (!path)
879 return;
880
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]881 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]882 return;
883
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]884 memcpy(trash.str + trash.len, path, len);
885 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]886
887 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]888 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
889 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]890 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]891 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
892 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]893 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]894
895 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]896 si_shutr(si);
897 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]898 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]899 si->state = SI_ST_CLO;
900
901 /* send the message */
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]902 http_server_error(s, si, SN_ERR_LOCAL, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]903
904 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]905 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]906}
907
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]908/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]909 * that the server side is closed. Note that err_type is actually a
910 * bitmask, where almost only aborts may be cumulated with other
911 * values. We consider that aborted operations are more important
912 * than timeouts or errors due to the fact that nobody else in the
913 * logs might explain incomplete retries. All others should avoid
914 * being cumulated. It should normally not be possible to have multiple
915 * aborts at once, but just in case, the first one in sequence is reported.
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]916 * Note that connection errors appearing on the second request of a keep-alive
917 * connection are not reported since this allows the client to retry.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]918 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]919void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]920{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]921 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]922
923 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]924 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]925 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]926 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]927 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]928 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
929 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]930 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]931 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]932 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]933 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]934 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]935 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]936 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]937 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]938 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
939 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]940 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]941 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]942 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
943 http_error_message(s, HTTP_ERR_503));
Willy Tarreau2d400bb2012-05-14 12:11:47 +0200[diff] [blame]944 else if (err_type & SI_ET_CONN_RES)
945 http_server_error(s, si, SN_ERR_RESOURCE, SN_FINST_C,
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]946 503, (s->txn.flags & TX_NOT_FIRST) ? NULL :
947 http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]948 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]949 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]950 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]951}
952
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]953extern const char sess_term_cond[8];
954extern const char sess_fin_state[8];
955extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]956struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]957struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]958struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]959
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]960/*
961 * Capture headers from message starting at <som> according to header list
962 * <cap_hdr>, and fill the <idx> structure appropriately.
963 */
964void capture_headers(char *som, struct hdr_idx *idx,
965 char **cap, struct cap_hdr *cap_hdr)
966{
967 char *eol, *sol, *col, *sov;
968 int cur_idx;
969 struct cap_hdr *h;
970 int len;
971
972 sol = som + hdr_idx_first_pos(idx);
973 cur_idx = hdr_idx_first_idx(idx);
974
975 while (cur_idx) {
976 eol = sol + idx->v[cur_idx].len;
977
978 col = sol;
979 while (col < eol && *col != ':')
980 col++;
981
982 sov = col + 1;
983 while (sov < eol && http_is_lws[(unsigned char)*sov])
984 sov++;
985
986 for (h = cap_hdr; h; h = h->next) {
987 if ((h->namelen == col - sol) &&
988 (strncasecmp(sol, h->name, h->namelen) == 0)) {
989 if (cap[h->index] == NULL)
990 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]991 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]992
993 if (cap[h->index] == NULL) {
994 Alert("HTTP capture : out of memory.\n");
995 continue;
996 }
997
998 len = eol - sov;
999 if (len > h->len)
1000 len = h->len;
1001
1002 memcpy(cap[h->index], sov, len);
1003 cap[h->index][len]=0;
1004 }
1005 }
1006 sol = eol + idx->v[cur_idx].cr + 1;
1007 cur_idx = idx->v[cur_idx].next;
1008 }
1009}
1010
1011
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1012/* either we find an LF at <ptr> or we jump to <bad>.
1013 */
1014#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1015
1016/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1017 * otherwise to <http_msg_ood> with <state> set to <st>.
1018 */
1019#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1020 ptr++; \
1021 if (likely(ptr < end)) \
1022 goto good; \
1023 else { \
1024 state = (st); \
1025 goto http_msg_ood; \
1026 } \
1027 } while (0)
1028
1029
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1030/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1031 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1032 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1033 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1034 * will give undefined results.
1035 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1036 * and that msg->sol points to the beginning of the response.
1037 * If a complete line is found (which implies that at least one CR or LF is
1038 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1039 * returned indicating an incomplete line (which does not mean that parts have
1040 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1041 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1042 * upon next call.
1043 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1044 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1045 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1046 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1047 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1048 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1049const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1050 enum ht_state state, const char *ptr, const char *end,
1051 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1052{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1053 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1054
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1055 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1056 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1057 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1058 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1059 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1060
1061 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1062 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1063 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1064 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1065 state = HTTP_MSG_ERROR;
1066 break;
1067
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1068 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1069 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1070 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1071 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1072 goto http_msg_rpcode;
1073 }
1074 if (likely(HTTP_IS_SPHT(*ptr)))
1075 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1076 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1077 state = HTTP_MSG_ERROR;
1078 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1079
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1080 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1081 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1082 if (likely(!HTTP_IS_LWS(*ptr)))
1083 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1084
1085 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1086 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1087 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1088 }
1089
1090 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1091 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1092 http_msg_rsp_reason:
1093 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1094 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1095 msg->sl.st.r_l = 0;
1096 goto http_msg_rpline_eol;
1097
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1098 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1099 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1100 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1101 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1102 goto http_msg_rpreason;
1103 }
1104 if (likely(HTTP_IS_SPHT(*ptr)))
1105 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1106 /* so it's a CR/LF, so there is no reason phrase */
1107 goto http_msg_rsp_reason;
1108
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1109 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1110 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1111 if (likely(!HTTP_IS_CRLF(*ptr)))
1112 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1113 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1114 http_msg_rpline_eol:
1115 /* We have seen the end of line. Note that we do not
1116 * necessarily have the \n yet, but at least we know that we
1117 * have EITHER \r OR \n, otherwise the response would not be
1118 * complete. We can then record the response length and return
1119 * to the caller which will be able to register it.
1120 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1121 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1122 return ptr;
1123
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1124 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1125#ifdef DEBUG_FULL
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1126 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1127 exit(1);
1128#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1129 ;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1130 }
1131
1132 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1133 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1134 if (ret_state)
1135 *ret_state = state;
1136 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1137 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1138 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1139}
1140
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1141/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1142 * This function parses a request line between <ptr> and <end>, starting with
1143 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1144 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1145 * will give undefined results.
1146 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1147 * and that msg->sol points to the beginning of the request.
1148 * If a complete line is found (which implies that at least one CR or LF is
1149 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1150 * returned indicating an incomplete line (which does not mean that parts have
1151 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1152 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1153 * upon next call.
1154 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1155 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1156 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1157 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1158 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1159 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1160const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1161 enum ht_state state, const char *ptr, const char *end,
1162 unsigned int *ret_ptr, enum ht_state *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1163{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1164 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1165
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1166 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1167 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1168 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1169 if (likely(HTTP_IS_TOKEN(*ptr)))
1170 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1171
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1172 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1173 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1174 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1175 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1176
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1177 if (likely(HTTP_IS_CRLF(*ptr))) {
1178 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1179 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1180 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1181 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1182 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1183 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1184 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1185 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1186 msg->sl.rq.v_l = 0;
1187 goto http_msg_rqline_eol;
1188 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1189 state = HTTP_MSG_ERROR;
1190 break;
1191
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1192 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1193 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1194 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1195 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1196 goto http_msg_rquri;
1197 }
1198 if (likely(HTTP_IS_SPHT(*ptr)))
1199 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1200 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1201 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1202
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1203 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1204 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1205 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1206 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1207
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1208 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1209 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1210 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1211 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1212
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1213 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1214 /* non-ASCII chars are forbidden unless option
1215 * accept-invalid-http-request is enabled in the frontend.
1216 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1217 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1218 if (msg->err_pos < -1)
1219 goto invalid_char;
1220 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1221 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1222 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1223 }
1224
1225 if (likely(HTTP_IS_CRLF(*ptr))) {
1226 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1227 goto http_msg_req09_uri_e;
1228 }
1229
1230 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1231 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1232 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1233 state = HTTP_MSG_ERROR;
1234 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1235
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1236 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1237 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1238 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1239 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1240 goto http_msg_rqver;
1241 }
1242 if (likely(HTTP_IS_SPHT(*ptr)))
1243 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1244 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1245 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1246
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1247 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1248 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1249 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1250 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1251
1252 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1253 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1254 http_msg_rqline_eol:
1255 /* We have seen the end of line. Note that we do not
1256 * necessarily have the \n yet, but at least we know that we
1257 * have EITHER \r OR \n, otherwise the request would not be
1258 * complete. We can then record the request length and return
1259 * to the caller which will be able to register it.
1260 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1261 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1262 return ptr;
1263 }
1264
1265 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1266 state = HTTP_MSG_ERROR;
1267 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1268
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1269 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1270#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1271 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1272 exit(1);
1273#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1274 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1275 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1276
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1277 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1278 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1279 if (ret_state)
1280 *ret_state = state;
1281 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1282 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1283 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1284}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1285
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1286/*
1287 * Returns the data from Authorization header. Function may be called more
1288 * than once so data is stored in txn->auth_data. When no header is found
1289 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1290 * searching again for something we are unable to find anyway.
1291 */
1292
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1293char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1294
1295int
1296get_http_auth(struct session *s)
1297{
1298
1299 struct http_txn *txn = &s->txn;
1300 struct chunk auth_method;
1301 struct hdr_ctx ctx;
1302 char *h, *p;
1303 int len;
1304
1305#ifdef DEBUG_AUTH
1306 printf("Auth for session %p: %d\n", s, txn->auth.method);
1307#endif
1308
1309 if (txn->auth.method == HTTP_AUTH_WRONG)
1310 return 0;
1311
1312 if (txn->auth.method)
1313 return 1;
1314
1315 txn->auth.method = HTTP_AUTH_WRONG;
1316
1317 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1318
1319 if (txn->flags & TX_USE_PX_CONN) {
1320 h = "Proxy-Authorization";
1321 len = strlen(h);
1322 } else {
1323 h = "Authorization";
1324 len = strlen(h);
1325 }
1326
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1327 if (!http_find_header2(h, len, s->req->buf->p, &txn->hdr_idx, &ctx))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1328 return 0;
1329
1330 h = ctx.line + ctx.val;
1331
1332 p = memchr(h, ' ', ctx.vlen);
1333 if (!p || p == h)
1334 return 0;
1335
1336 chunk_initlen(&auth_method, h, 0, p-h);
1337 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1338
1339 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1340
1341 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1342 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1343
1344 if (len < 0)
1345 return 0;
1346
1347
1348 get_http_auth_buff[len] = '\0';
1349
1350 p = strchr(get_http_auth_buff, ':');
1351
1352 if (!p)
1353 return 0;
1354
1355 txn->auth.user = get_http_auth_buff;
1356 *p = '\0';
1357 txn->auth.pass = p+1;
1358
1359 txn->auth.method = HTTP_AUTH_BASIC;
1360 return 1;
1361 }
1362
1363 return 0;
1364}
1365
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1366
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1367/*
1368 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1369 * depending on the initial msg->msg_state. The caller is responsible for
1370 * ensuring that the message does not wrap. The function can be preempted
1371 * everywhere when data are missing and recalled at the exact same location
1372 * with no information loss. The message may even be realigned between two
1373 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1374 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1375 * fields. Note that msg->sol will be initialized after completing the first
1376 * state, so that none of the msg pointers has to be initialized prior to the
1377 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1378 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1379void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1380{
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1381 enum ht_state state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1382 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1383 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1384
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1385 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1386 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1387 ptr = buf->p + msg->next;
1388 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1389
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1390 if (unlikely(ptr >= end))
1391 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1392
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1393 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1394 /*
1395 * First, states that are specific to the response only.
1396 * We check them first so that request and headers are
1397 * closer to each other (accessed more often).
1398 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1399 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1400 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1401 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1402 /* we have a start of message, but we have to check
1403 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1404 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1405 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1406 if (unlikely(ptr != buf->p)) {
1407 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1408 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1409 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1410 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1411 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1412 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1413 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1414 hdr_idx_init(idx);
1415 state = HTTP_MSG_RPVER;
1416 goto http_msg_rpver;
1417 }
1418
1419 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1420 goto http_msg_invalid;
1421
1422 if (unlikely(*ptr == '\n'))
1423 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1424 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1425 /* stop here */
1426
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1427 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1428 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1429 EXPECT_LF_HERE(ptr, http_msg_invalid);
1430 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1431 /* stop here */
1432
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1433 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1434 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1435 case HTTP_MSG_RPVER_SP:
1436 case HTTP_MSG_RPCODE:
1437 case HTTP_MSG_RPCODE_SP:
1438 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1439 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1440 state, ptr, end,
1441 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1442 if (unlikely(!ptr))
1443 return;
1444
1445 /* we have a full response and we know that we have either a CR
1446 * or an LF at <ptr>.
1447 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1448 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1449
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1450 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1451 if (likely(*ptr == '\r'))
1452 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1453 goto http_msg_rpline_end;
1454
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1455 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1456 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1457 /* msg->sol must point to the first of CR or LF. */
1458 EXPECT_LF_HERE(ptr, http_msg_invalid);
1459 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1460 /* stop here */
1461
1462 /*
1463 * Second, states that are specific to the request only
1464 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1465 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1466 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1467 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1468 /* we have a start of message, but we have to check
1469 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1470 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1471 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1472 if (likely(ptr != buf->p)) {
1473 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1474 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1475 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1476 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1477 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1478 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1479 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1480 state = HTTP_MSG_RQMETH;
1481 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1482 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1483
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1484 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1485 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1486
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1487 if (unlikely(*ptr == '\n'))
1488 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1489 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1490 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1491
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1492 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1493 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1494 EXPECT_LF_HERE(ptr, http_msg_invalid);
1495 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1496 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1497
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1498 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1499 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1500 case HTTP_MSG_RQMETH_SP:
1501 case HTTP_MSG_RQURI:
1502 case HTTP_MSG_RQURI_SP:
1503 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1504 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1505 state, ptr, end,
1506 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1507 if (unlikely(!ptr))
1508 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1509
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1510 /* we have a full request and we know that we have either a CR
1511 * or an LF at <ptr>.
1512 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1513 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1514
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1515 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1516 if (likely(*ptr == '\r'))
1517 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1518 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1519
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1520 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1521 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1522 /* check for HTTP/0.9 request : no version information available.
1523 * msg->sol must point to the first of CR or LF.
1524 */
1525 if (unlikely(msg->sl.rq.v_l == 0))
1526 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1527
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1528 EXPECT_LF_HERE(ptr, http_msg_invalid);
1529 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1530 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1531
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1532 /*
1533 * Common states below
1534 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1535 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1536 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1537 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1538 if (likely(!HTTP_IS_CRLF(*ptr))) {
1539 goto http_msg_hdr_name;
1540 }
1541
1542 if (likely(*ptr == '\r'))
1543 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1544 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1545
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1546 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1547 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1548 /* assumes msg->sol points to the first char */
1549 if (likely(HTTP_IS_TOKEN(*ptr)))
1550 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1551
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1552 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1553 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1554
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1555 if (likely(msg->err_pos < -1) || *ptr == '\n')
1556 goto http_msg_invalid;
1557
1558 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1559 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1560
1561 /* and we still accept this non-token character */
1562 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1563
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1564 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1565 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1566 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1567 if (likely(HTTP_IS_SPHT(*ptr)))
1568 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1569
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1570 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1571 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1572
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1573 if (likely(!HTTP_IS_CRLF(*ptr))) {
1574 goto http_msg_hdr_val;
1575 }
1576
1577 if (likely(*ptr == '\r'))
1578 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1579 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1580
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1581 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1582 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1583 EXPECT_LF_HERE(ptr, http_msg_invalid);
1584 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1585
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1586 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1587 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1588 if (likely(HTTP_IS_SPHT(*ptr))) {
1589 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1590 for (; buf->p + msg->sov < ptr; msg->sov++)
1591 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1592 goto http_msg_hdr_l1_sp;
1593 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1594 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1595 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1596 goto http_msg_complete_header;
1597
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1598 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1599 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1600 /* assumes msg->sol points to the first char, and msg->sov
1601 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1602 */
1603 if (likely(!HTTP_IS_CRLF(*ptr)))
1604 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1605
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1606 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1607 /* Note: we could also copy eol into ->eoh so that we have the
1608 * real header end in case it ends with lots of LWS, but is this
1609 * really needed ?
1610 */
1611 if (likely(*ptr == '\r'))
1612 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1613 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1614
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1615 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1616 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1617 EXPECT_LF_HERE(ptr, http_msg_invalid);
1618 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1619
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1620 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1621 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1622 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1623 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1624 for (; buf->p + msg->eol < ptr; msg->eol++)
1625 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1626 goto http_msg_hdr_val;
1627 }
1628 http_msg_complete_header:
1629 /*
1630 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1631 * Assumes msg->sol points to the first char, msg->sov points
1632 * to the first character of the value and msg->eol to the
1633 * first CR or LF so we know how the line ends. We insert last
1634 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1635 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1636 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1637 idx, idx->tail) < 0))
1638 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1639
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1640 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1641 if (likely(!HTTP_IS_CRLF(*ptr))) {
1642 goto http_msg_hdr_name;
1643 }
1644
1645 if (likely(*ptr == '\r'))
1646 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1647 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1648
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1649 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1650 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1651 /* Assumes msg->sol points to the first of either CR or LF */
1652 EXPECT_LF_HERE(ptr, http_msg_invalid);
1653 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1654 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1655 msg->eoh = msg->sol;
1656 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1657 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1658 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1659
1660 case HTTP_MSG_ERROR:
1661 /* this may only happen if we call http_msg_analyser() twice with an error */
1662 break;
1663
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1664 default:
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1665#ifdef DEBUG_FULL
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1666 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1667 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1668#endif
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]1669 ;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1670 }
1671 http_msg_ood:
1672 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1673 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1674 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1675 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1676
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1677 http_msg_invalid:
1678 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1679 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1680 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1681 return;
1682}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1683
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1684/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1685 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1686 * nothing is done and 1 is returned.
1687 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1688static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1689{
1690 int delta;
1691 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1692 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1693
1694 if (msg->sl.rq.v_l != 0)
1695 return 1;
1696
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1697 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1698 delta = 0;
1699
1700 if (msg->sl.rq.u_l == 0) {
1701 /* if no URI was set, add "/" */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1702 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1703 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1704 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1705 }
1706 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1707 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1708 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1709 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1710 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1711 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1712 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1713 NULL, NULL);
1714 if (unlikely(!cur_end))
1715 return 0;
1716
1717 /* we have a full HTTP/1.0 request now and we know that
1718 * we have either a CR or an LF at <ptr>.
1719 */
1720 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1721 return 1;
1722}
1723
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1724/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1725 * and "keep-alive" values. If we already know that some headers may safely
1726 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1727 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1728 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1729 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1730 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1731 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1732 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1733 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1734 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1735void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1736{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1737 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1738 const char *hdr_val = "Connection";
1739 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1740
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1741 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1742 return;
1743
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1744 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1745 hdr_val = "Proxy-Connection";
1746 hdr_len = 16;
1747 }
1748
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1749 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1750 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1751 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1752 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1753 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1754 if (to_del & 2)
1755 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1756 else
1757 txn->flags |= TX_CON_KAL_SET;
1758 }
1759 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1760 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1761 if (to_del & 1)
1762 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1763 else
1764 txn->flags |= TX_CON_CLO_SET;
1765 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1766 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1767 txn->flags |= TX_HDR_CONN_UPG;
1768 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1769 }
1770
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1771 txn->flags |= TX_HDR_CONN_PRS;
1772 return;
1773}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1774
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1775/* Apply desired changes on the Connection: header. Values may be removed and/or
1776 * added depending on the <wanted> flags, which are exclusively composed of
1777 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1778 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1779 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1780void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1781{
1782 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1783 const char *hdr_val = "Connection";
1784 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1785
1786 ctx.idx = 0;
1787
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1788
1789 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1790 hdr_val = "Proxy-Connection";
1791 hdr_len = 16;
1792 }
1793
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1794 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1795 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1796 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1797 if (wanted & TX_CON_KAL_SET)
1798 txn->flags |= TX_CON_KAL_SET;
1799 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1800 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1801 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1802 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1803 if (wanted & TX_CON_CLO_SET)
1804 txn->flags |= TX_CON_CLO_SET;
1805 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1806 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1807 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1808 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1809
1810 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1811 return;
1812
1813 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1814 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1815 hdr_val = "Connection: close";
1816 hdr_len = 17;
1817 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1818 hdr_val = "Proxy-Connection: close";
1819 hdr_len = 23;
1820 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1821 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1822 }
1823
1824 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1825 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1826 hdr_val = "Connection: keep-alive";
1827 hdr_len = 22;
1828 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1829 hdr_val = "Proxy-Connection: keep-alive";
1830 hdr_len = 28;
1831 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1832 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1833 }
1834 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1835}
1836
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1837/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to the
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1838 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1839 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1840 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1841 * Note: this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1842 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1843static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1844{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1845 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1846 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1847 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1848 const char *end = buf->data + buf->size;
1849 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1850 unsigned int chunk = 0;
1851
1852 /* The chunk size is in the following form, though we are only
1853 * interested in the size and CRLF :
1854 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1855 */
1856 while (1) {
1857 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1858 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1859 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1860 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1861 if (c < 0) /* not a hex digit anymore */
1862 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1863 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1864 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1865 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1866 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1867 chunk = (chunk << 4) + c;
1868 }
1869
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1870 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1871 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1872 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1873
1874 while (http_is_spht[(unsigned char)*ptr]) {
1875 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1876 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1877 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1878 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1879 }
1880
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1881 /* Up to there, we know that at least one byte is present at *ptr. Check
1882 * for the end of chunk size.
1883 */
1884 while (1) {
1885 if (likely(HTTP_IS_CRLF(*ptr))) {
1886 /* we now have a CR or an LF at ptr */
1887 if (likely(*ptr == '\r')) {
1888 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1889 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1890 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1891 return 0;
1892 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1893
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1894 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1895 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1896 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1897 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1898 /* done */
1899 break;
1900 }
1901 else if (*ptr == ';') {
1902 /* chunk extension, ends at next CRLF */
1903 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1904 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1905 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1906 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1907
1908 while (!HTTP_IS_CRLF(*ptr)) {
1909 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1910 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1911 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1912 return 0;
1913 }
1914 /* we have a CRLF now, loop above */
1915 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1916 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1917 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1918 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1919 }
1920
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1921 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1922 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1923 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1924 */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1925 if (unlikely(ptr < ptr_old))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1926 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1927 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1928 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1929 msg->chunk_len = chunk;
1930 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1931 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1932 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1933 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1934 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1935 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1936}
1937
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1938/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1939 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1940 * the trailers is found, it is automatically scheduled to be forwarded,
1941 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1942 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1943 * except maybe msg->next and msg->sov if it could parse some lines, and returns
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1944 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1945 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1946 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1947 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1948 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1949 * matches the length of trailers already parsed and not forwarded. It is also
1950 * important to note that this function is designed to be able to parse wrapped
1951 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1952 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1953static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1954{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1955 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1956
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1957 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1958 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1959 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1960 const char *ptr = b_ptr(buf, msg->next);
1961 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1962 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1963
1964 /* scan current line and stop at LF or CRLF */
1965 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1966 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1967 return 0;
1968
1969 if (*ptr == '\n') {
1970 if (!p1)
1971 p1 = ptr;
1972 p2 = ptr;
1973 break;
1974 }
1975
1976 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1977 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1978 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1979 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1980 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1981 p1 = ptr;
1982 }
1983
1984 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1985 if (ptr >= buf->data + buf->size)
1986 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1987 }
1988
1989 /* after LF; point to beginning of next line */
1990 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1991 if (p2 >= buf->data + buf->size)
1992 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1993
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1994 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1995 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1996 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1997
1998 /* schedule this line for forwarding */
1999 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2000 if (msg->sov >= buf->size)
2001 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2002
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2003 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]2004 /* LF/CRLF at beginning of line => end of trailers at p2.
2005 * Everything was scheduled for forwarding, there's nothing
2006 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]2007 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2008 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2009 msg->msg_state = HTTP_MSG_DONE;
2010 return 1;
2011 }
2012 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2013 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2014 }
2015}
2016
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]2017/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2018 * a possible LF alone at the end of a chunk. It automatically adjusts msg->sov,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2019 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2020 * Note that the caller must ensure that ->p points to the first byte to parse.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2021 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
2022 * not enough data are available, the function does not change anything and
2023 * returns zero. If a parse error is encountered, the function returns < 0 and
2024 * does not change anything. Note: this function is designed to parse wrapped
2025 * CRLF at the end of the buffer.
2026 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2027static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2028{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2029 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2030 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2031 int bytes;
2032
2033 /* NB: we'll check data availabilty at the end. It's not a
2034 * problem because whatever we match first will be checked
2035 * against the correct length.
2036 */
2037 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2038 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2039 if (*ptr == '\r') {
2040 bytes++;
2041 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2042 if (ptr >= buf->data + buf->size)
2043 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2044 }
2045
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2046 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2047 return 0;
2048
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2049 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2050 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2051 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2052 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2053
2054 ptr++;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2055 if (unlikely(ptr >= buf->data + buf->size))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2056 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2057 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
2058 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]2059 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2060 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
2061 return 1;
2062}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2063
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2064
2065/*
2066 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2067 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2068int select_compression_request_header(struct session *s, struct buffer *req)
2069{
2070 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2071 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2072 struct hdr_ctx ctx;
2073 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2074 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2075
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2076 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
2077 * unless they are known good (MSIE 6 with XP SP2, or MSIE 7 and later).
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2078 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
2079 */
2080 ctx.idx = 0;
2081 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
2082 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2083 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
2084 (ctx.vlen < 31 ||
2085 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
2086 ctx.line[ctx.val + 30] < '6' ||
2087 (ctx.line[ctx.val + 30] == '6' &&
2088 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
2089 s->comp_algo = NULL;
2090 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2091 }
2092
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2093 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2094 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2095 ctx.idx = 0;
2096 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2097 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2098 if (word_match(ctx.line + ctx.val, ctx.vlen, comp_algo->name, comp_algo->name_len)) {
2099 s->comp_algo = comp_algo;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2100
2101 /* remove all occurrences of the header when "compression offload" is set */
2102
2103 if ((s->be->comp && s->be->comp->offload) ||
2104 (s->fe->comp && s->fe->comp->offload)) {
2105 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2106 ctx.idx = 0;
2107 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2108 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2109 }
2110 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2111 return 1;
2112 }
2113 }
2114 }
2115 }
2116
2117 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2118 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2119 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2120 if (comp_algo->add_data == identity_add_data) {
2121 s->comp_algo = comp_algo;
2122 return 1;
2123 }
2124 }
2125 }
2126
2127 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2128 return 0;
2129}
2130
2131/*
2132 * Selects a comression algorithm depending of the server response.
2133 */
2134int select_compression_response_header(struct session *s, struct buffer *res)
2135{
2136 struct http_txn *txn = &s->txn;
2137 struct http_msg *msg = &txn->rsp;
2138 struct hdr_ctx ctx;
2139 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2140
2141 /* no common compression algorithm was found in request header */
2142 if (s->comp_algo == NULL)
2143 goto fail;
2144
2145 /* HTTP < 1.1 should not be compressed */
2146 if (!(msg->flags & HTTP_MSGF_VER_11))
2147 goto fail;
2148
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2149 /* 200 only */
2150 if (txn->status != 200)
2151 goto fail;
2152
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2153 /* Content-Length is null */
2154 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2155 goto fail;
2156
Willy Tarreau667c2a32013-04-09 08:13:58 +0200[diff] [blame]2157 /* TEMPORARY WORKAROUND: do not compress if response is chunked !!!!!! */
2158 if (msg->flags & HTTP_MSGF_TE_CHNK)
2159 goto fail;
2160
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2161 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2162 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2163 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2164 goto fail;
2165
Willy Tarreau56e9ffa2013-01-05 16:20:35 +0100[diff] [blame]2166 /* no compression when Cache-Control: no-transform is present in the message */
2167 ctx.idx = 0;
2168 while (http_find_header2("Cache-Control", 13, res->p, &txn->hdr_idx, &ctx)) {
2169 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12))
2170 goto fail;
2171 }
2172
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2173 comp_type = NULL;
2174
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2175 /* we don't want to compress multipart content-types, nor content-types that are
2176 * not listed in the "compression type" directive if any. If no content-type was
2177 * found but configuration requires one, we don't compress either. Backend has
2178 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2179 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2180 ctx.idx = 0;
2181 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2182 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2183 goto fail;
2184
2185 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
2186 (s->fe->comp && (comp_type = s->fe->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2187 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2188 if (ctx.vlen >= comp_type->name_len &&
2189 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2190 /* this Content-Type should be compressed */
2191 break;
2192 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2193 /* this Content-Type should not be compressed */
2194 if (comp_type == NULL)
2195 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2196 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2197 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2198 else { /* no content-type header */
2199 if ((s->be->comp && s->be->comp->types) || (s->fe->comp && s->fe->comp->types))
2200 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2201 }
2202
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2203 /* limit compression rate */
2204 if (global.comp_rate_lim > 0)
2205 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2206 goto fail;
2207
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2208 /* limit cpu usage */
2209 if (idle_pct < compress_min_idle)
2210 goto fail;
2211
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2212 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2213 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2214 goto fail;
2215
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2216 s->flags |= SN_COMP_READY;
2217
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2218 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2219 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2220 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2221 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2222
2223 /* add Transfer-Encoding header */
2224 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2225 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2226
2227 /*
2228 * Add Content-Encoding header when it's not identity encoding.
2229 * RFC 2616 : Identity encoding: This content-coding is used only in the
2230 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2231 * header.
2232 */
2233 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2234 trash.len = 18;
2235 memcpy(trash.str, "Content-Encoding: ", trash.len);
2236 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2237 trash.len += s->comp_algo->name_len;
2238 trash.str[trash.len] = '\0';
2239 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2240 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2241 return 1;
2242
2243fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2244 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2245 return 0;
2246}
2247
2248
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2249/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2250 * processing can continue on next analysers, or zero if it either needs more
2251 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2252 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2253 * when it has nothing left to do, and may remove any analyser when it wants to
2254 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2255 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2256int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2257{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2258 /*
2259 * We will parse the partial (or complete) lines.
2260 * We will check the request syntax, and also join multi-line
2261 * headers. An index of all the lines will be elaborated while
2262 * parsing.
2263 *
2264 * For the parsing, we use a 28 states FSM.
2265 *
2266 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2267 * req->buf->p = beginning of request
2268 * req->buf->p + msg->eoh = end of processed headers / start of current one
2269 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2270 * msg->eol = end of current header or line (LF or CRLF)
2271 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2272 *
2273 * At end of parsing, we may perform a capture of the error (if any), and
2274 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2275 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2276 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2277 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2278
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2279 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2280 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2281 struct http_txn *txn = &s->txn;
2282 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2283 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2284
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2285 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2286 now_ms, __FUNCTION__,
2287 s,
2288 req,
2289 req->rex, req->wex,
2290 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2291 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2292 req->analysers);
2293
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2294 /* we're speaking HTTP here, so let's speak HTTP to the client */
2295 s->srv_error = http_return_srv_error;
2296
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2297 /* There's a protected area at the end of the buffer for rewriting
2298 * purposes. We don't want to start to parse the request if the
2299 * protected area is affected, because we may have to move processed
2300 * data later, which is much more complicated.
2301 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2302 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2303 if (txn->flags & TX_NOT_FIRST) {
2304 if (unlikely(!channel_reserved(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2305 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2306 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2307 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2308 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2309 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2310 return 0;
2311 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2312 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2313 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2314 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2315 }
2316
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2317 /* Note that we have the same problem with the response ; we
2318 * may want to send a redirect, error or anything which requires
2319 * some spare space. So we'll ensure that we have at least
2320 * maxrewrite bytes available in the response buffer before
2321 * processing that one. This will only affect pipelined
2322 * keep-alive requests.
2323 */
2324 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2325 unlikely(!channel_reserved(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2326 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2327 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2328 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2329 if (s->rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2330 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2331 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2332 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2333 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2334 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2335 return 0;
2336 }
2337 }
2338
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2339 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2340 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2341 }
2342
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2343 /* 1: we might have to print this header in debug mode */
2344 if (unlikely((global.mode & MODE_DEBUG) &&
2345 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2346 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2347 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2348
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2349 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2350 /* this is a bit complex : in case of error on the request line,
2351 * we know that rq.l is still zero, so we display only the part
2352 * up to the end of the line (truncated by debug_hdr).
2353 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2354 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2355 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2356
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2357 sol += hdr_idx_first_pos(&txn->hdr_idx);
2358 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2359
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2360 while (cur_idx) {
2361 eol = sol + txn->hdr_idx.v[cur_idx].len;
2362 debug_hdr("clihdr", s, sol, eol);
2363 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2364 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2365 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2366 }
2367
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2368
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2369 /*
2370 * Now we quickly check if we have found a full valid request.
2371 * If not so, we check the FD and buffer states before leaving.
2372 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2373 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2374 * requests are checked first. When waiting for a second request
2375 * on a keep-alive session, if we encounter and error, close, t/o,
2376 * we note the error in the session flags but don't set any state.
2377 * Since the error will be noted there, it will not be counted by
2378 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2379 * Last, we may increase some tracked counters' http request errors on
2380 * the cases that are deliberately the client's fault. For instance,
2381 * a timeout or connection reset is not counted as an error. However
2382 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2383 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2384
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2385 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2386 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2387 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2388 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2389 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2390 session_inc_http_req_ctr(s);
2391 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2392 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2393 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2394 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2395
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2396 /* 1: Since we are in header mode, if there's no space
2397 * left for headers, we won't be able to free more
2398 * later, so the session will never terminate. We
2399 * must terminate it now.
2400 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2401 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2402 /* FIXME: check if URI is set and return Status
2403 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2404 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2405 session_inc_http_req_ctr(s);
2406 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2407 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2408 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2409 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2410 goto return_bad_req;
2411 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2412
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2413 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2414 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2415 if (!(s->flags & SN_ERR_MASK))
2416 s->flags |= SN_ERR_CLICL;
2417
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2418 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2419 goto failed_keep_alive;
2420
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2421 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2422 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2423 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2424 session_inc_http_err_ctr(s);
2425 }
2426
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2427 txn->status = 400;
2428 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2429 msg->msg_state = HTTP_MSG_ERROR;
2430 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2431
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2432 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2433 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2434 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2435 if (s->listener->counters)
2436 s->listener->counters->failed_req++;
2437
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2438 if (!(s->flags & SN_FINST_MASK))
2439 s->flags |= SN_FINST_R;
2440 return 0;
2441 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2442
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2443 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2444 else if (req->flags & CF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2445 if (!(s->flags & SN_ERR_MASK))
2446 s->flags |= SN_ERR_CLITO;
2447
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2448 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2449 goto failed_keep_alive;
2450
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2451 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2452 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2453 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2454 session_inc_http_err_ctr(s);
2455 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2456 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2457 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2458 msg->msg_state = HTTP_MSG_ERROR;
2459 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2460
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2461 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2462 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2463 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2464 if (s->listener->counters)
2465 s->listener->counters->failed_req++;
2466
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2467 if (!(s->flags & SN_FINST_MASK))
2468 s->flags |= SN_FINST_R;
2469 return 0;
2470 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2471
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2472 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2473 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2474 if (!(s->flags & SN_ERR_MASK))
2475 s->flags |= SN_ERR_CLICL;
2476
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2477 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2478 goto failed_keep_alive;
2479
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2480 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2481 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2482 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2483 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2484 msg->msg_state = HTTP_MSG_ERROR;
2485 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2486
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2487 session_inc_http_err_ctr(s);
2488 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2489 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2490 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2491 if (s->listener->counters)
2492 s->listener->counters->failed_req++;
2493
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2494 if (!(s->flags & SN_FINST_MASK))
2495 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2496 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2497 }
2498
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2499 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2500 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2501 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2502#ifdef TCP_QUICKACK
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]2503 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i && objt_conn(s->req->prod->end) && (__objt_conn(s->req->prod->end)->flags & CO_FL_CTRL_READY)) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2504 /* We need more data, we have to re-enable quick-ack in case we
2505 * previously disabled it, otherwise we might cause the client
2506 * to delay next data.
2507 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2508 setsockopt(__objt_conn(s->req->prod->end)->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2509 }
2510#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2511
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2512 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2513 /* If the client starts to talk, let's fall back to
2514 * request timeout processing.
2515 */
2516 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2517 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2518 }
2519
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2520 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2521 if (!tick_isset(req->analyse_exp)) {
2522 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2523 (txn->flags & TX_WAIT_NEXT_RQ) &&
2524 tick_isset(s->be->timeout.httpka))
2525 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2526 else
2527 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2528 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2529
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2530 /* we're not ready yet */
2531 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2532
2533 failed_keep_alive:
2534 /* Here we process low-level errors for keep-alive requests. In
2535 * short, if the request is not the first one and it experiences
2536 * a timeout, read error or shutdown, we just silently close so
2537 * that the client can try again.
2538 */
2539 txn->status = 0;
2540 msg->msg_state = HTTP_MSG_RQBEFORE;
2541 req->analysers = 0;
2542 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2543 s->logs.level = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2544 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2545 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2546 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2547 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2548
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2549 /* OK now we have a complete HTTP request with indexed headers. Let's
2550 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2551 * later. At this point, we have the last CRLF at req->buf->data + msg->eoh.
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2552 * If the request is in HTTP/0.9 form, the rule is still true, and eoh
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2553 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2554 * byte after the last LF. msg->sov points to the first byte of data.
2555 * msg->eol cannot be trusted because it may have been left uninitialized
2556 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2557 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2558
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2559 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2560 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2561
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2562 if (txn->flags & TX_WAIT_NEXT_RQ) {
2563 /* kill the pending keep-alive timeout */
2564 txn->flags &= ~TX_WAIT_NEXT_RQ;
2565 req->analyse_exp = TICK_ETERNITY;
2566 }
2567
2568
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2569 /* Maybe we found in invalid header name while we were configured not
2570 * to block on that, so we have to capture it now.
2571 */
2572 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2573 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2574
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2575 /*
2576 * 1: identify the method
2577 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2578 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2579
2580 /* we can make use of server redirect on GET and HEAD */
2581 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2582 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2583
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2584 /*
2585 * 2: check if the URI matches the monitor_uri.
2586 * We have to do this for every request which gets in, because
2587 * the monitor-uri is defined by the frontend.
2588 */
2589 if (unlikely((s->fe->monitor_uri_len != 0) &&
2590 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2591 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2592 s->fe->monitor_uri,
2593 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2594 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2595 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2596 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2597 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2598
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2599 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2600 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2601
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2602 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2603 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2604 int ret = acl_exec_cond(cond, s->fe, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2605
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2606 ret = acl_pass(ret);
2607 if (cond->pol == ACL_COND_UNLESS)
2608 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2609
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2610 if (ret) {
2611 /* we fail this request, let's return 503 service unavail */
2612 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2613 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2614 if (!(s->flags & SN_ERR_MASK))
2615 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2616 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2617 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2618 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2619
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2620 /* nothing to fail, let's reply normaly */
2621 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2622 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2623 if (!(s->flags & SN_ERR_MASK))
2624 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2625 goto return_prx_cond;
2626 }
2627
2628 /*
2629 * 3: Maybe we have to copy the original REQURI for the logs ?
2630 * Note: we cannot log anymore if the request has been
2631 * classified as invalid.
2632 */
2633 if (unlikely(s->logs.logwait & LW_REQ)) {
2634 /* we have a complete HTTP request that we must log */
2635 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2636 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2637
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2638 if (urilen >= REQURI_LEN)
2639 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2640 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2641 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2642
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2643 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2644 s->do_log(s);
2645 } else {
2646 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2647 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2648 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2649
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2650 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2651 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2652 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2653
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2654 /* ... and check if the request is HTTP/1.1 or above */
2655 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2656 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2657 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2658 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2659 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2660
2661 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2662 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL | TX_HDR_CONN_UPG);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2663
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2664 /* if the frontend has "option http-use-proxy-header", we'll check if
2665 * we have what looks like a proxied connection instead of a connection,
2666 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2667 * Note that this is *not* RFC-compliant, however browsers and proxies
2668 * happen to do that despite being non-standard :-(
2669 * We consider that a request not beginning with either '/' or '*' is
2670 * a proxied connection, which covers both "scheme://location" and
2671 * CONNECT ip:port.
2672 */
2673 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2674 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2675 txn->flags |= TX_USE_PX_CONN;
2676
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2677 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2678 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2679
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2680 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2681 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2682 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2683 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2684
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2685 /* 6: determine the transfer-length.
2686 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2687 * the presence of a message-body in a REQUEST and its transfer length
2688 * must be determined that way (in order of precedence) :
2689 * 1. The presence of a message-body in a request is signaled by the
2690 * inclusion of a Content-Length or Transfer-Encoding header field
2691 * in the request's header fields. When a request message contains
2692 * both a message-body of non-zero length and a method that does
2693 * not define any semantics for that request message-body, then an
2694 * origin server SHOULD either ignore the message-body or respond
2695 * with an appropriate error message (e.g., 413). A proxy or
2696 * gateway, when presented the same request, SHOULD either forward
2697 * the request inbound with the message- body or ignore the
2698 * message-body when determining a response.
2699 *
2700 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2701 * and the "chunked" transfer-coding (Section 6.2) is used, the
2702 * transfer-length is defined by the use of this transfer-coding.
2703 * If a Transfer-Encoding header field is present and the "chunked"
2704 * transfer-coding is not present, the transfer-length is defined
2705 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2706 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2707 * 3. If a Content-Length header field is present, its decimal value in
2708 * OCTETs represents both the entity-length and the transfer-length.
2709 * If a message is received with both a Transfer-Encoding header
2710 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2711 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2712 * 4. By the server closing the connection. (Closing the connection
2713 * cannot be used to indicate the end of a request body, since that
2714 * would leave no possibility for the server to send back a response.)
2715 *
2716 * Whenever a transfer-coding is applied to a message-body, the set of
2717 * transfer-codings MUST include "chunked", unless the message indicates
2718 * it is terminated by closing the connection. When the "chunked"
2719 * transfer-coding is used, it MUST be the last transfer-coding applied
2720 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2721 */
2722
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2723 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2724 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2725 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2726 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2727 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2728 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2729 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2730 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2731 /* bad transfer-encoding (chunked followed by something else) */
2732 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2733 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2734 break;
2735 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2736 }
2737
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2738 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2739 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2740 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2741 signed long long cl;
2742
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2743 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2744 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2745 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2746 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2747
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2748 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2749 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2750 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2751 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2752
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2753 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2754 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2755 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2756 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2757
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2758 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2759 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2760 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2761 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2762
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2763 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2764 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2765 }
2766
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2767 /* bodyless requests have a known length */
2768 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2769 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2770
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2771 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2772 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2773 req->analyse_exp = TICK_ETERNITY;
2774 return 1;
2775
2776 return_bad_req:
2777 /* We centralize bad requests processing here */
2778 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2779 /* we detected a parsing error. We want to archive this request
2780 * in the dedicated proxy area for later troubleshooting.
2781 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2782 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2783 }
2784
2785 txn->req.msg_state = HTTP_MSG_ERROR;
2786 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2787 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2788
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2789 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2790 if (s->listener->counters)
2791 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2792
2793 return_prx_cond:
2794 if (!(s->flags & SN_ERR_MASK))
2795 s->flags |= SN_ERR_PRXCOND;
2796 if (!(s->flags & SN_FINST_MASK))
2797 s->flags |= SN_FINST_R;
2798
2799 req->analysers = 0;
2800 req->analyse_exp = TICK_ETERNITY;
2801 return 0;
2802}
2803
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2804
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2805/* This function prepares an applet to handle the stats. It can deal with the
2806 * "100-continue" expectation, check that admin rules are met for POST requests,
2807 * and program a response message if something was unexpected. It cannot fail
2808 * and always relies on the stats applet to complete the job. It does not touch
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2809 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2810 * s->target which is supposed to already point to the stats applet. The caller
2811 * is expected to have already assigned an appctx to the session.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2812 */
2813int http_handle_stats(struct session *s, struct channel *req)
2814{
2815 struct stats_admin_rule *stats_admin_rule;
2816 struct stream_interface *si = s->rep->prod;
2817 struct http_txn *txn = &s->txn;
2818 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2819 struct uri_auth *uri_auth = s->be->uri_auth;
2820 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2821 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2822
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2823 appctx = si_appctx(si);
2824 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
2825 appctx->st1 = appctx->st2 = 0;
2826 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
2827 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2828
2829 uri = msg->chn->buf->p + msg->sl.rq.u;
2830 lookup = uri + uri_auth->uri_len;
2831
2832 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
2833 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2834 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2835 break;
2836 }
2837 }
2838
2839 if (uri_auth->refresh) {
2840 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
2841 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2842 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2843 break;
2844 }
2845 }
2846 }
2847
2848 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
2849 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2850 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2851 break;
2852 }
2853 }
2854
2855 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
2856 if (memcmp(h, ";st=", 4) == 0) {
2857 int i;
2858 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2859 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2860 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
2861 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2862 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2863 break;
2864 }
2865 }
2866 break;
2867 }
2868 }
2869
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2870 appctx->ctx.stats.scope_str = 0;
2871 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2872 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
2873 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
2874 int itx = 0;
2875 const char *h2;
2876 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
2877 const char *err;
2878
2879 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
2880 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2881 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2882 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
2883 itx++;
2884 h++;
2885 }
2886
2887 if (itx > STAT_SCOPE_TXT_MAXLEN)
2888 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2889 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2890
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2891 /* scope_txt = search query, appctx->ctx.stats.scope_len is always <= STAT_SCOPE_TXT_MAXLEN */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2892 memcpy(scope_txt, h2, itx);
2893 scope_txt[itx] = '\0';
2894 err = invalid_char(scope_txt);
2895 if (err) {
2896 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2897 appctx->ctx.stats.scope_str = 0;
2898 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2899 }
2900 break;
2901 }
2902 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2903
2904 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2905 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2906 int ret = 1;
2907
2908 if (stats_admin_rule->cond) {
2909 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
2910 ret = acl_pass(ret);
2911 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
2912 ret = !ret;
2913 }
2914
2915 if (ret) {
2916 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2917 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2918 break;
2919 }
2920 }
2921
2922 /* Was the status page requested with a POST ? */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2923 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2924 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2925 if (msg->msg_state < HTTP_MSG_100_SENT) {
2926 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
2927 * send an HTTP/1.1 100 Continue intermediate response.
2928 */
2929 if (msg->flags & HTTP_MSGF_VER_11) {
2930 struct hdr_ctx ctx;
2931 ctx.idx = 0;
2932 /* Expect is allowed in 1.1, look for it */
2933 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
2934 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
2935 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
2936 }
2937 }
2938 msg->msg_state = HTTP_MSG_100_SENT;
2939 s->logs.tv_request = now; /* update the request timer to reflect full request */
2940 }
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2941 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2942 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2943 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2944 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
2945 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]2946 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2947 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2948 else {
2949 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2950 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2951 }
2952
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2953 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2954 return 1;
2955}
2956
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]2957/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
2958 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
2959 */
2960static inline void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
2961{
2962#ifdef IP_TOS
2963 if (from.ss_family == AF_INET)
2964 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
2965#endif
2966#ifdef IPV6_TCLASS
2967 if (from.ss_family == AF_INET6) {
2968 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
2969 /* v4-mapped addresses need IP_TOS */
2970 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
2971 else
2972 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
2973 }
2974#endif
2975}
2976
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2977/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2978 * transaction <txn>. Returns the first rule that prevents further processing
2979 * of the request (auth, deny, ...) or NULL if it executed all rules or stopped
2980 * on an allow. It may set the TX_CLDENY on txn->flags if it encounters a deny
2981 * rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2982 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2983static struct http_req_rule *
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2984http_req_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2985{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2986 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2987 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2988 struct hdr_ctx ctx;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2989
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2990 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2991 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2992 continue;
2993
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2994 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2995 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2996 int ret;
2997
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2998 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2999 ret = acl_pass(ret);
3000
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3001 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3002 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3003
3004 if (!ret) /* condition not matched */
3005 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3006 }
3007
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3008
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3009 switch (rule->action) {
3010 case HTTP_REQ_ACT_ALLOW:
3011 return NULL; /* "allow" rules are OK */
3012
3013 case HTTP_REQ_ACT_DENY:
3014 txn->flags |= TX_CLDENY;
3015 return rule;
3016
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3017 case HTTP_REQ_ACT_TARPIT:
3018 txn->flags |= TX_CLTARPIT;
3019 return rule;
3020
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3021 case HTTP_REQ_ACT_AUTH:
3022 return rule;
3023
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3024 case HTTP_REQ_ACT_REDIR:
3025 return rule;
3026
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3027 case HTTP_REQ_ACT_SET_NICE:
3028 s->task->nice = rule->arg.nice;
3029 break;
3030
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3031 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3032 if ((cli_conn = objt_conn(s->req->prod->end)) && (cli_conn->flags & CO_FL_CTRL_READY))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3033 inet_set_tos(cli_conn->t.sock.fd, cli_conn->addr.from, rule->arg.tos);
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3034 break;
3035
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3036 case HTTP_REQ_ACT_SET_MARK:
3037#ifdef SO_MARK
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3038 if ((cli_conn = objt_conn(s->req->prod->end)) && (cli_conn->flags & CO_FL_CTRL_READY))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3039 setsockopt(cli_conn->t.sock.fd, SOL_SOCKET, SO_MARK, &rule->arg.mark, sizeof(rule->arg.mark));
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3040#endif
3041 break;
3042
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3043 case HTTP_REQ_ACT_SET_LOGL:
3044 s->logs.level = rule->arg.loglevel;
3045 break;
3046
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3047 case HTTP_REQ_ACT_SET_HDR:
3048 ctx.idx = 0;
3049 /* remove all occurrences of the header */
3050 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3051 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3052 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3053 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3054 /* now fall through to header addition */
3055
3056 case HTTP_REQ_ACT_ADD_HDR:
3057 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3058 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3059 trash.len = rule->arg.hdr_add.name_len;
3060 trash.str[trash.len++] = ':';
3061 trash.str[trash.len++] = ' ';
3062 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3063 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3064 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3065 }
3066 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3067
3068 /* we reached the end of the rules, nothing to report */
Willy Tarreau418c1a02012-12-25 20:52:58 +0100[diff] [blame]3069 return NULL;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3070}
3071
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3072
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3073/* Executes the http-response rules <rules> for session <s>, proxy <px> and
3074 * transaction <txn>. Returns the first rule that prevents further processing
3075 * of the response (deny, ...) or NULL if it executed all rules or stopped
3076 * on an allow. It may set the TX_SVDENY on txn->flags if it encounters a deny
3077 * rule.
3078 */
3079static struct http_res_rule *
3080http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3081{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3082 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3083 struct http_res_rule *rule;
3084 struct hdr_ctx ctx;
3085
3086 list_for_each_entry(rule, rules, list) {
3087 if (rule->action >= HTTP_RES_ACT_MAX)
3088 continue;
3089
3090 /* check optional condition */
3091 if (rule->cond) {
3092 int ret;
3093
3094 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
3095 ret = acl_pass(ret);
3096
3097 if (rule->cond->pol == ACL_COND_UNLESS)
3098 ret = !ret;
3099
3100 if (!ret) /* condition not matched */
3101 continue;
3102 }
3103
3104
3105 switch (rule->action) {
3106 case HTTP_RES_ACT_ALLOW:
3107 return NULL; /* "allow" rules are OK */
3108
3109 case HTTP_RES_ACT_DENY:
3110 txn->flags |= TX_SVDENY;
3111 return rule;
3112
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3113 case HTTP_RES_ACT_SET_NICE:
3114 s->task->nice = rule->arg.nice;
3115 break;
3116
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3117 case HTTP_RES_ACT_SET_TOS:
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3118 if ((cli_conn = objt_conn(s->req->prod->end)) && (cli_conn->flags & CO_FL_CTRL_READY))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3119 inet_set_tos(cli_conn->t.sock.fd, cli_conn->addr.from, rule->arg.tos);
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3120 break;
3121
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3122 case HTTP_RES_ACT_SET_MARK:
3123#ifdef SO_MARK
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3124 if ((cli_conn = objt_conn(s->req->prod->end)) && (cli_conn->flags & CO_FL_CTRL_READY))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3125 setsockopt(cli_conn->t.sock.fd, SOL_SOCKET, SO_MARK, &rule->arg.mark, sizeof(rule->arg.mark));
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3126#endif
3127 break;
3128
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3129 case HTTP_RES_ACT_SET_LOGL:
3130 s->logs.level = rule->arg.loglevel;
3131 break;
3132
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3133 case HTTP_RES_ACT_SET_HDR:
3134 ctx.idx = 0;
3135 /* remove all occurrences of the header */
3136 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3137 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3138 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3139 }
3140 /* now fall through to header addition */
3141
3142 case HTTP_RES_ACT_ADD_HDR:
3143 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3144 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3145 trash.len = rule->arg.hdr_add.name_len;
3146 trash.str[trash.len++] = ':';
3147 trash.str[trash.len++] = ' ';
3148 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3149 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3150 break;
3151 }
3152 }
3153
3154 /* we reached the end of the rules, nothing to report */
3155 return NULL;
3156}
3157
3158
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3159/* Perform an HTTP redirect based on the information in <rule>. The function
3160 * returns non-zero on success, or zero in case of a, irrecoverable error such
3161 * as too large a request to build a valid response.
3162 */
3163static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3164{
3165 struct http_msg *msg = &txn->req;
3166 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3167 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3168
3169 /* build redirect message */
3170 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3171 case 308:
3172 msg_fmt = HTTP_308;
3173 break;
3174 case 307:
3175 msg_fmt = HTTP_307;
3176 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3177 case 303:
3178 msg_fmt = HTTP_303;
3179 break;
3180 case 301:
3181 msg_fmt = HTTP_301;
3182 break;
3183 case 302:
3184 default:
3185 msg_fmt = HTTP_302;
3186 break;
3187 }
3188
3189 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3190 return 0;
3191
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3192 location = trash.str + trash.len;
3193
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3194 switch(rule->type) {
3195 case REDIRECT_TYPE_SCHEME: {
3196 const char *path;
3197 const char *host;
3198 struct hdr_ctx ctx;
3199 int pathlen;
3200 int hostlen;
3201
3202 host = "";
3203 hostlen = 0;
3204 ctx.idx = 0;
3205 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
3206 host = ctx.line + ctx.val;
3207 hostlen = ctx.vlen;
3208 }
3209
3210 path = http_get_path(txn);
3211 /* build message using path */
3212 if (path) {
3213 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3214 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3215 int qs = 0;
3216 while (qs < pathlen) {
3217 if (path[qs] == '?') {
3218 pathlen = qs;
3219 break;
3220 }
3221 qs++;
3222 }
3223 }
3224 } else {
3225 path = "/";
3226 pathlen = 1;
3227 }
3228
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3229 if (rule->rdr_str) { /* this is an old "redirect" rule */
3230 /* check if we can add scheme + "://" + host + path */
3231 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3232 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3233
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3234 /* add scheme */
3235 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3236 trash.len += rule->rdr_len;
3237 }
3238 else {
3239 /* add scheme with executing log format */
3240 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3241
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3242 /* check if we can add scheme + "://" + host + path */
3243 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3244 return 0;
3245 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3246 /* add "://" */
3247 memcpy(trash.str + trash.len, "://", 3);
3248 trash.len += 3;
3249
3250 /* add host */
3251 memcpy(trash.str + trash.len, host, hostlen);
3252 trash.len += hostlen;
3253
3254 /* add path */
3255 memcpy(trash.str + trash.len, path, pathlen);
3256 trash.len += pathlen;
3257
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3258 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3259 if (trash.len && trash.str[trash.len - 1] != '/' &&
3260 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3261 if (trash.len > trash.size - 5)
3262 return 0;
3263 trash.str[trash.len] = '/';
3264 trash.len++;
3265 }
3266
3267 break;
3268 }
3269 case REDIRECT_TYPE_PREFIX: {
3270 const char *path;
3271 int pathlen;
3272
3273 path = http_get_path(txn);
3274 /* build message using path */
3275 if (path) {
3276 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3277 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3278 int qs = 0;
3279 while (qs < pathlen) {
3280 if (path[qs] == '?') {
3281 pathlen = qs;
3282 break;
3283 }
3284 qs++;
3285 }
3286 }
3287 } else {
3288 path = "/";
3289 pathlen = 1;
3290 }
3291
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3292 if (rule->rdr_str) { /* this is an old "redirect" rule */
3293 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3294 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3295
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3296 /* add prefix. Note that if prefix == "/", we don't want to
3297 * add anything, otherwise it makes it hard for the user to
3298 * configure a self-redirection.
3299 */
3300 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3301 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3302 trash.len += rule->rdr_len;
3303 }
3304 }
3305 else {
3306 /* add prefix with executing log format */
3307 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3308
3309 /* Check length */
3310 if (trash.len + pathlen > trash.size - 4)
3311 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3312 }
3313
3314 /* add path */
3315 memcpy(trash.str + trash.len, path, pathlen);
3316 trash.len += pathlen;
3317
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3318 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3319 if (trash.len && trash.str[trash.len - 1] != '/' &&
3320 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3321 if (trash.len > trash.size - 5)
3322 return 0;
3323 trash.str[trash.len] = '/';
3324 trash.len++;
3325 }
3326
3327 break;
3328 }
3329 case REDIRECT_TYPE_LOCATION:
3330 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3331 if (rule->rdr_str) { /* this is an old "redirect" rule */
3332 if (trash.len + rule->rdr_len > trash.size - 4)
3333 return 0;
3334
3335 /* add location */
3336 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3337 trash.len += rule->rdr_len;
3338 }
3339 else {
3340 /* add location with executing log format */
3341 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3342
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3343 /* Check left length */
3344 if (trash.len > trash.size - 4)
3345 return 0;
3346 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3347 break;
3348 }
3349
3350 if (rule->cookie_len) {
3351 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3352 trash.len += 14;
3353 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3354 trash.len += rule->cookie_len;
3355 memcpy(trash.str + trash.len, "\r\n", 2);
3356 trash.len += 2;
3357 }
3358
3359 /* add end of headers and the keep-alive/close status.
3360 * We may choose to set keep-alive if the Location begins
3361 * with a slash, because the client will come back to the
3362 * same server.
3363 */
3364 txn->status = rule->code;
3365 /* let's log the request time */
3366 s->logs.tv_request = now;
3367
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3368 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3369 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3370 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3371 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3372 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3373 /* keep-alive possible */
3374 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3375 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3376 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3377 trash.len += 30;
3378 } else {
3379 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3380 trash.len += 24;
3381 }
3382 }
3383 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3384 trash.len += 4;
3385 bo_inject(txn->rsp.chn, trash.str, trash.len);
3386 /* "eat" the request */
3387 bi_fast_delete(txn->req.chn->buf, msg->sov);
3388 msg->sov = 0;
3389 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3390 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3391 txn->req.msg_state = HTTP_MSG_CLOSED;
3392 txn->rsp.msg_state = HTTP_MSG_DONE;
3393 } else {
3394 /* keep-alive not possible */
3395 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3396 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3397 trash.len += 29;
3398 } else {
3399 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3400 trash.len += 23;
3401 }
3402 stream_int_retnclose(txn->req.chn->prod, &trash);
3403 txn->req.chn->analysers = 0;
3404 }
3405
3406 if (!(s->flags & SN_ERR_MASK))
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3407 s->flags |= SN_ERR_LOCAL;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3408 if (!(s->flags & SN_FINST_MASK))
3409 s->flags |= SN_FINST_R;
3410
3411 return 1;
3412}
3413
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3414/* This stream analyser runs all HTTP request processing which is common to
3415 * frontends and backends, which means blocking ACLs, filters, connection-close,
3416 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3417 * It returns 1 if the processing can continue on next analysers, or zero if it
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3418 * either needs more data or wants to immediately abort the request (eg: deny,
3419 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3420 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3421int http_process_req_common(struct session *s, struct channel *req, int an_bit, struct proxy *px)
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3422{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3423 struct http_txn *txn = &s->txn;
3424 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3425 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3426 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3427 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3428 struct cond_wordlist *wl;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3429
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3430 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3431 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3432 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3433 return 0;
3434 }
3435
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3436 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3437 req->analyse_exp = TICK_ETERNITY;
3438
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3439 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3440 now_ms, __FUNCTION__,
3441 s,
3442 req,
3443 req->rex, req->wex,
3444 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3445 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3446 req->analysers);
3447
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3448 /* first check whether we have some ACLs set to block this request */
3449 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3450 int ret = acl_exec_cond(cond, px, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]3451
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3452 ret = acl_pass(ret);
3453 if (cond->pol == ACL_COND_UNLESS)
3454 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]3455
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3456 if (ret) {
3457 txn->status = 403;
3458 /* let's log the request time */
3459 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3460 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3461 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3462 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3463 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3464 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3465
Willy Tarreau5d5b5d82012-12-09 12:00:04 +0100[diff] [blame]3466 /* just in case we have some per-backend tracking */
3467 session_inc_be_http_req_ctr(s);
3468
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3469 /* evaluate http-request rules */
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3470 http_req_last_rule = http_req_get_intercept_rule(px, &px->http_req_rules, s, txn);
Willy Tarreau51425942010-02-01 10:40:19 +0100[diff] [blame]3471
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3472 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3473 if (!http_req_last_rule) {
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3474 if (stats_check_uri(s->rep->prod, txn, px)) {
3475 s->target = &http_stats_applet.obj_type;
Willy Tarreau1fbe1c92013-12-01 09:35:41 +0100[diff] [blame]3476 if (unlikely(!stream_int_register_handler(s->rep->prod, objt_applet(s->target)))) {
3477 txn->status = 500;
3478 s->logs.tv_request = now;
3479 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3480
Willy Tarreau1fbe1c92013-12-01 09:35:41 +0100[diff] [blame]3481 if (!(s->flags & SN_ERR_MASK))
3482 s->flags |= SN_ERR_RESOURCE;
3483 goto return_prx_cond;
3484 }
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3485 /* parse the whole stats request and extract the relevant information */
3486 http_handle_stats(s, req);
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3487 http_req_last_rule = http_req_get_intercept_rule(px, &px->uri_auth->http_req_rules, s, txn);
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3488 }
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3489 }
3490
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3491 /* only apply req{,i}{rep/deny/tarpit} if the request was not yet
3492 * blocked by an http-request rule.
3493 */
3494 if (!(txn->flags & (TX_CLDENY|TX_CLTARPIT)) && (px->req_exp != NULL)) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3495 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3496 goto return_bad_req;
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3497 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3498
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3499 /* return a 403 if either rule has blocked */
3500 if (txn->flags & (TX_CLDENY|TX_CLTARPIT)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3501 if (txn->flags & TX_CLDENY) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3502 txn->status = 403;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3503 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3504 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3505 session_inc_http_err_ctr(s);
Willy Tarreau687ba132013-11-16 10:13:35 +0100[diff] [blame]3506 s->fe->fe_counters.denied_req++;
3507 if (s->fe != s->be)
3508 s->be->be_counters.denied_req++;
3509 if (s->listener->counters)
3510 s->listener->counters->denied_req++;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3511 goto return_prx_cond;
3512 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3513
3514 /* When a connection is tarpitted, we use the tarpit timeout,
3515 * which may be the same as the connect timeout if unspecified.
3516 * If unset, then set it to zero because we really want it to
3517 * eventually expire. We build the tarpit as an analyser.
3518 */
3519 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3520 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3521 /* wipe the request out so that we can drop the connection early
3522 * if the client closes first.
3523 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3524 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3525 req->analysers = 0; /* remove switching rules etc... */
3526 req->analysers |= AN_REQ_HTTP_TARPIT;
3527 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3528 if (!req->analyse_exp)
3529 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3530 session_inc_http_err_ctr(s);
Willy Tarreau687ba132013-11-16 10:13:35 +0100[diff] [blame]3531 s->fe->fe_counters.denied_req++;
3532 if (s->fe != s->be)
3533 s->be->be_counters.denied_req++;
3534 if (s->listener->counters)
3535 s->listener->counters->denied_req++;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3536 return 1;
3537 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3538 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3539
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3540 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3541 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3542 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3543 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3544 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3545 * avoid to redo the same work if FE and BE have the same settings (common).
3546 * The method consists in checking if options changed between the two calls
3547 * (implying that either one is non-null, or one of them is non-null and we
3548 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3549 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3550
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3551 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3552 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3553 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3554 (s->be->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)))) {
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3555 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3556
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3557 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3558 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3559 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3560 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3561 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3562 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3563 tmp = TX_CON_WANT_CLO;
3564
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3565 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3566 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3567
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3568 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3569 /* parse the Connection header and possibly clean it */
3570 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3571 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3572 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3573 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3574 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3575 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3576 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3577 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3578 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3579
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3580 /* check if client or config asks for explicit close in KAL/SCL */
3581 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3582 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3583 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3584 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3585 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3586 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3587 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3588 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3589 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3590
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3591 /* we can be blocked here because the request needs to be authenticated,
3592 * either to pass or to access stats.
3593 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3594 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_AUTH) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]3595 char *realm = http_req_last_rule->arg.auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3596
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3597 if (!realm)
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3598 realm = (objt_applet(s->target) == &http_stats_applet) ? STATS_DEFAULT_REALM : px->id;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3599
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3600 chunk_printf(&trash, (txn->flags & TX_USE_PX_CONN) ? HTTP_407_fmt : HTTP_401_fmt, realm);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3601 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3602 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3603 /* on 401 we still count one error, because normal browsing
3604 * won't significantly increase the counter but brute force
3605 * attempts will.
3606 */
3607 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3608 goto return_prx_cond;
3609 }
3610
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3611 /* add request headers from the rule sets in the same order */
3612 list_for_each_entry(wl, &px->req_add, list) {
3613 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3614 int ret = acl_exec_cond(wl->cond, px, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3615 ret = acl_pass(ret);
3616 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3617 ret = !ret;
3618 if (!ret)
3619 continue;
3620 }
3621
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3622 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3623 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3624 }
3625
3626 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_REDIR) {
3627 if (!http_apply_redirect_rule(http_req_last_rule->arg.redir, s, txn))
3628 goto return_bad_req;
3629 req->analyse_exp = TICK_ETERNITY;
3630 return 1;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3631 }
3632
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3633 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3634 /* process the stats request now */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3635 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3636 s->fe->fe_counters.intercepted_req++;
3637
3638 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3639 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
3640 if (!(s->flags & SN_FINST_MASK))
3641 s->flags |= SN_FINST_R;
3642
3643 req->analyse_exp = TICK_ETERNITY;
3644 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3645 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3646 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3647
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3648 /* check whether we have some ACLs set to redirect this request */
3649 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3650 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3651 int ret;
3652
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3653 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3654 ret = acl_pass(ret);
3655 if (rule->cond->pol == ACL_COND_UNLESS)
3656 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3657 if (!ret)
3658 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3659 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3660 if (!http_apply_redirect_rule(rule, s, txn))
3661 goto return_bad_req;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3662
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3663 req->analyse_exp = TICK_ETERNITY;
3664 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3665 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3666
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3667 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3668 * If this happens, then the data will not come immediately, so we must
3669 * send all what we have without waiting. Note that due to the small gain
3670 * in waiting for the body of the request, it's easier to simply put the
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3671 * CF_SEND_DONTWAIT flag any time. It's a one-shot flag so it will remove
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3672 * itself once used.
3673 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3674 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3675
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3676 /* that's OK for us now, let's move on to next analysers */
3677 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3678
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3679 return_bad_req:
3680 /* We centralize bad requests processing here */
3681 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3682 /* we detected a parsing error. We want to archive this request
3683 * in the dedicated proxy area for later troubleshooting.
3684 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3685 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3686 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3687
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3688 txn->req.msg_state = HTTP_MSG_ERROR;
3689 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3690 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3691
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3692 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3693 if (s->listener->counters)
3694 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3695
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3696 return_prx_cond:
3697 if (!(s->flags & SN_ERR_MASK))
3698 s->flags |= SN_ERR_PRXCOND;
3699 if (!(s->flags & SN_FINST_MASK))
3700 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3701
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3702 req->analysers = 0;
3703 req->analyse_exp = TICK_ETERNITY;
3704 return 0;
3705}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3706
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3707/* This function performs all the processing enabled for the current request.
3708 * It returns 1 if the processing can continue on next analysers, or zero if it
3709 * needs more data, encounters an error, or wants to immediately abort the
3710 * request. It relies on buffers flags, and updates s->req->analysers.
3711 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3712int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3713{
3714 struct http_txn *txn = &s->txn;
3715 struct http_msg *msg = &txn->req;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3716 struct connection *cli_conn = objt_conn(req->prod->end);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3717
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3718 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3719 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3720 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3721 return 0;
3722 }
3723
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3724 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3725 now_ms, __FUNCTION__,
3726 s,
3727 req,
3728 req->rex, req->wex,
3729 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3730 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3731 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3732
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3733 if (s->fe->comp || s->be->comp)
3734 select_compression_request_header(s, req->buf);
3735
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3736 /*
3737 * Right now, we know that we have processed the entire headers
3738 * and that unwanted requests have been filtered out. We can do
3739 * whatever we want with the remaining request. Also, now we
3740 * may have separate values for ->fe, ->be.
3741 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3742
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3743 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3744 * If HTTP PROXY is set we simply get remote server address parsing
3745 * incoming request. Note that this requires that a connection is
3746 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3747 */
3748 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3749 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]3750 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3751
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]3752 /* Note that for now we don't reuse existing proxy connections */
3753 if (unlikely((conn = si_alloc_conn(req->cons, 0)) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3754 txn->req.msg_state = HTTP_MSG_ERROR;
3755 txn->status = 500;
3756 req->analysers = 0;
3757 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
3758
3759 if (!(s->flags & SN_ERR_MASK))
3760 s->flags |= SN_ERR_RESOURCE;
3761 if (!(s->flags & SN_FINST_MASK))
3762 s->flags |= SN_FINST_R;
3763
3764 return 0;
3765 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]3766
3767 path = http_get_path(txn);
3768 url2sa(req->buf->p + msg->sl.rq.u,
3769 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
3770 &conn->addr.to);
3771 /* if the path was found, we have to remove everything between
3772 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
3773 * found, we need to replace from req->buf->p + msg->sl.rq.u for
3774 * u_l characters by a single "/".
3775 */
3776 if (path) {
3777 char *cur_ptr = req->buf->p;
3778 char *cur_end = cur_ptr + txn->req.sl.rq.l;
3779 int delta;
3780
3781 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u, path, NULL, 0);
3782 http_msg_move_end(&txn->req, delta);
3783 cur_end += delta;
3784 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
3785 goto return_bad_req;
3786 }
3787 else {
3788 char *cur_ptr = req->buf->p;
3789 char *cur_end = cur_ptr + txn->req.sl.rq.l;
3790 int delta;
3791
3792 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
3793 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
3794 http_msg_move_end(&txn->req, delta);
3795 cur_end += delta;
3796 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
3797 goto return_bad_req;
3798 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3799 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3800
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3801 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3802 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3803 * Note that doing so might move headers in the request, but
3804 * the fields will stay coherent and the URI will not move.
3805 * This should only be performed in the backend.
3806 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3807 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3808 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3809 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3810
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3811 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3812 * 8: the appsession cookie was looked up very early in 1.2,
3813 * so let's do the same now.
3814 */
3815
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3816 /* It needs to look into the URI unless persistence must be ignored */
3817 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3818 get_srv_from_appsession(s, req->buf->p + msg->sl.rq.u, msg->sl.rq.u_l);
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3819 }
3820
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3821 /* add unique-id if "header-unique-id" is specified */
3822
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]3823 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
3824 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
3825 goto return_bad_req;
3826 s->unique_id[0] = '\0';
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3827 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]3828 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3829
3830 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3831 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3832 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3833 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3834 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len) < 0))
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3835 goto return_bad_req;
3836 }
3837
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3838 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3839 * 9: add X-Forwarded-For if either the frontend or the backend
3840 * asks for it.
3841 */
3842 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3843 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3844 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3845 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3846 s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_len : s->fe->fwdfor_hdr_len,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3847 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3848 /* The header is set to be added only if none is present
3849 * and we found it, so don't do anything.
3850 */
3851 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3852 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3853 /* Add an X-Forwarded-For header unless the source IP is
3854 * in the 'except' network range.
3855 */
3856 if ((!s->fe->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3857 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & s->fe->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3858 != s->fe->except_net.s_addr) &&
3859 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3860 (((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr.s_addr & s->be->except_mask.s_addr)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3861 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3862 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3863 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3864 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3865
3866 /* Note: we rely on the backend to get the header name to be used for
3867 * x-forwarded-for, because the header is really meant for the backends.
3868 * However, if the backend did not specify any option, we have to rely
3869 * on the frontend's header name.
3870 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3871 if (s->be->fwdfor_hdr_len) {
3872 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3873 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3874 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3875 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3876 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3877 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3878 len += sprintf(trash.str + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Willy Tarreauedcf6682008-11-30 23:15:34 +0100[diff] [blame]3879
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3880 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3881 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3882 }
3883 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3884 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3885 /* FIXME: for the sake of completeness, we should also support
3886 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3887 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3888 int len;
3889 char pn[INET6_ADDRSTRLEN];
3890 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3891 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3892 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3893
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3894 /* Note: we rely on the backend to get the header name to be used for
3895 * x-forwarded-for, because the header is really meant for the backends.
3896 * However, if the backend did not specify any option, we have to rely
3897 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3898 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3899 if (s->be->fwdfor_hdr_len) {
3900 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3901 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3902 } else {
3903 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3904 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3905 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3906 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3907
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3908 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3909 goto return_bad_req;
3910 }
3911 }
3912
3913 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3914 * 10: add X-Original-To if either the frontend or the backend
3915 * asks for it.
3916 */
3917 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3918
3919 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3920 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3921 /* Add an X-Original-To header unless the destination IP is
3922 * in the 'except' network range.
3923 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3924 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3925
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3926 if (cli_conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3927 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3928 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & s->fe->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3929 != s->fe->except_to.s_addr) &&
3930 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3931 (((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr.s_addr & s->be->except_mask_to.s_addr)
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3932 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3933 int len;
3934 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3935 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3936
3937 /* Note: we rely on the backend to get the header name to be used for
3938 * x-original-to, because the header is really meant for the backends.
3939 * However, if the backend did not specify any option, we have to rely
3940 * on the frontend's header name.
3941 */
3942 if (s->be->orgto_hdr_len) {
3943 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3944 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3945 } else {
3946 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3947 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3948 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3949 len += sprintf(trash.str + len, ": %d.%d.%d.%d", pn[0], pn[1], pn[2], pn[3]);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3950
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3951 if (unlikely(http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, len) < 0))
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3952 goto return_bad_req;
3953 }
3954 }
3955 }
3956
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3957 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3958 * If an "Upgrade" token is found, the header is left untouched in order not to have
3959 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3960 * "Upgrade" is present in the Connection header.
3961 */
3962 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3963 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3964 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3965 unsigned int want_flags = 0;
3966
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3967 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3968 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3969 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3970 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3971 want_flags |= TX_CON_CLO_SET;
3972 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3973 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3974 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3975 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3976 want_flags |= TX_CON_KAL_SET;
3977 }
3978
3979 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3980 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3981 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3982
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3983
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3984 /* If we have no server assigned yet and we're balancing on url_param
3985 * with a POST request, we may be interested in checking the body for
3986 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3987 */
3988 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3989 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3990 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3991 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3992 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3993 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3994 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3995
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3996 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3997 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3998#ifdef TCP_QUICKACK
3999 /* We expect some data from the client. Unless we know for sure
4000 * we already have a full request, we have to re-enable quick-ack
4001 * in case we previously disabled it, otherwise we might cause
4002 * the client to delay further data.
4003 */
4004 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]4005 cli_conn && (cli_conn->flags & CO_FL_CTRL_READY) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4006 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4007 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4008 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4009#endif
4010 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4011
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4012 /*************************************************************
4013 * OK, that's finished for the headers. We have done what we *
4014 * could. Let's switch to the DATA state. *
4015 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4016 req->analyse_exp = TICK_ETERNITY;
4017 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4018
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4019 /* if the server closes the connection, we want to immediately react
4020 * and close the socket to save packets and syscalls.
4021 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4022 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
4023 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4024
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4025 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4026 /* OK let's go on with the BODY now */
4027 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4028
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4029 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4030 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4031 /* we detected a parsing error. We want to archive this request
4032 * in the dedicated proxy area for later troubleshooting.
4033 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4034 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4035 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4036
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4037 txn->req.msg_state = HTTP_MSG_ERROR;
4038 txn->status = 400;
4039 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4040 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4041
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4042 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4043 if (s->listener->counters)
4044 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4045
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4046 if (!(s->flags & SN_ERR_MASK))
4047 s->flags |= SN_ERR_PRXCOND;
4048 if (!(s->flags & SN_FINST_MASK))
4049 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4050 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4051}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4052
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4053/* This function is an analyser which processes the HTTP tarpit. It always
4054 * returns zero, at the beginning because it prevents any other processing
4055 * from occurring, and at the end because it terminates the request.
4056 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4057int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4058{
4059 struct http_txn *txn = &s->txn;
4060
4061 /* This connection is being tarpitted. The CLIENT side has
4062 * already set the connect expiration date to the right
4063 * timeout. We just have to check that the client is still
4064 * there and that the timeout has not expired.
4065 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4066 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4067 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4068 !tick_is_expired(req->analyse_exp, now_ms))
4069 return 0;
4070
4071 /* We will set the queue timer to the time spent, just for
4072 * logging purposes. We fake a 500 server error, so that the
4073 * attacker will not suspect his connection has been tarpitted.
4074 * It will not cause trouble to the logs because we can exclude
4075 * the tarpitted connections by filtering on the 'PT' status flags.
4076 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4077 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4078
4079 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4080 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4081 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4082
4083 req->analysers = 0;
4084 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4085
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4086 if (!(s->flags & SN_ERR_MASK))
4087 s->flags |= SN_ERR_PRXCOND;
4088 if (!(s->flags & SN_FINST_MASK))
4089 s->flags |= SN_FINST_T;
4090 return 0;
4091}
4092
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4093/* This function is an analyser which processes the HTTP request body. It looks
4094 * for parameters to be used for the load balancing algorithm (url_param). It
4095 * must only be called after the standard HTTP request processing has occurred,
4096 * because it expects the request to be parsed. It returns zero if it needs to
4097 * read more data, or 1 once it has completed its analysis.
4098 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4099int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4100{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4101 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4102 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4103 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4104
4105 /* We have to parse the HTTP request body to find any required data.
4106 * "balance url_param check_post" should have been the only way to get
4107 * into this. We were brought here after HTTP header analysis, so all
4108 * related structures are ready.
4109 */
4110
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4111 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4112 goto missing_data;
4113
4114 if (msg->msg_state < HTTP_MSG_100_SENT) {
4115 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4116 * send an HTTP/1.1 100 Continue intermediate response.
4117 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4118 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4119 struct hdr_ctx ctx;
4120 ctx.idx = 0;
4121 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4122 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4123 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4124 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4125 }
4126 }
4127 msg->msg_state = HTTP_MSG_100_SENT;
4128 }
4129
4130 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4131 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4132 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4133 * is still null. We must save the body in msg->next because it
4134 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4135 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4136 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4137
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4138 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4139 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4140 else
4141 msg->msg_state = HTTP_MSG_DATA;
4142 }
4143
4144 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4145 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4146 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4147 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4148 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4149 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4150
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4151 if (!ret)
4152 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4153 else if (ret < 0) {
4154 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4155 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4156 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4157 }
4158
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4159 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4160 * We have the first data byte is in msg->sov. We're waiting for at
4161 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4162 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4163
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4164 if (msg->body_len < limit)
4165 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4166
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4167 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4168 goto http_end;
4169
4170 missing_data:
4171 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4172 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4173 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4174 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4175 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4176
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4177 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4178 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4179 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4180
4181 if (!(s->flags & SN_ERR_MASK))
4182 s->flags |= SN_ERR_CLITO;
4183 if (!(s->flags & SN_FINST_MASK))
4184 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4185 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4186 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4187
4188 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4189 if (!(req->flags & (CF_SHUTR | CF_READ_ERROR)) && !buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4190 /* Not enough data. We'll re-use the http-request
4191 * timeout here. Ideally, we should set the timeout
4192 * relative to the accept() date. We just set the
4193 * request timeout once at the beginning of the
4194 * request.
4195 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4196 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4197 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4198 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4199 return 0;
4200 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4201
4202 http_end:
4203 /* The situation will not evolve, so let's give up on the analysis. */
4204 s->logs.tv_request = now; /* update the request timer to reflect full request */
4205 req->analysers &= ~an_bit;
4206 req->analyse_exp = TICK_ETERNITY;
4207 return 1;
4208
4209 return_bad_req: /* let's centralize all bad requests */
4210 txn->req.msg_state = HTTP_MSG_ERROR;
4211 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4212 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4213
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4214 if (!(s->flags & SN_ERR_MASK))
4215 s->flags |= SN_ERR_PRXCOND;
4216 if (!(s->flags & SN_FINST_MASK))
4217 s->flags |= SN_FINST_R;
4218
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4219 return_err_msg:
4220 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4221 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4222 if (s->listener->counters)
4223 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4224 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4225}
4226
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4227/* send a server's name with an outgoing request over an established connection.
4228 * Note: this function is designed to be called once the request has been scheduled
4229 * for being forwarded. This is the reason why it rewinds the buffer before
4230 * proceeding.
4231 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4232int http_send_name_header(struct http_txn *txn, struct proxy* be, const char* srv_name) {
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4233
4234 struct hdr_ctx ctx;
4235
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4236 char *hdr_name = be->server_id_hdr_name;
4237 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4238 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4239 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4240 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4241
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4242 ctx.idx = 0;
4243
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4244 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4245 if (old_o) {
4246 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4247 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4248 }
4249
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4250 old_i = chn->buf->i;
4251 while (http_find_header2(hdr_name, hdr_name_len, txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4252 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4253 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4254 }
4255
4256 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4257 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4258 memcpy(hdr_val, hdr_name, hdr_name_len);
4259 hdr_val += hdr_name_len;
4260 *hdr_val++ = ':';
4261 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4262 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4263 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, hdr_val - trash.str);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4264
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4265 if (old_o) {
4266 /* If this was a forwarded request, we must readjust the amount of
4267 * data to be forwarded in order to take into account the size
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4268 * variations. Note that if the request was already scheduled for
4269 * forwarding, it had its req->sol pointing to the body, which
4270 * must then be updated too.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4271 */
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4272 txn->req.sol += chn->buf->i - old_i;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4273 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4274 }
4275
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4276 return 0;
4277}
4278
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4279/* Terminate current transaction and prepare a new one. This is very tricky
4280 * right now but it works.
4281 */
4282void http_end_txn_clean_session(struct session *s)
4283{
4284 /* FIXME: We need a more portable way of releasing a backend's and a
4285 * server's connections. We need a safer way to reinitialize buffer
4286 * flags. We also need a more accurate method for computing per-request
4287 * data.
4288 */
4289 http_silent_debug(__LINE__, s);
4290
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4291 /* unless we're doing keep-alive, we want to quickly close the connection
4292 * to the server.
4293 */
4294 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4295 !si_conn_ready(s->req->cons)) {
4296 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4297 si_shutr(s->req->cons);
4298 si_shutw(s->req->cons);
4299 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4300
4301 http_silent_debug(__LINE__, s);
4302
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4303 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4304 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4305 if (unlikely(s->srv_conn))
4306 sess_change_server(s, NULL);
4307 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4308
4309 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4310 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4311 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4312
4313 if (s->txn.status) {
4314 int n;
4315
4316 n = s->txn.status / 100;
4317 if (n < 1 || n > 5)
4318 n = 0;
4319
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4320 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4321 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4322 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4323 s->fe->fe_counters.p.http.comp_rsp++;
4324 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4325 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4326 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4327 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4328 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4329 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4330 s->be->be_counters.p.http.comp_rsp++;
4331 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4332 }
4333
4334 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4335 s->logs.bytes_in -= s->req->buf->i;
4336 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4337
4338 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4339 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4340 !(s->flags & SN_MONITOR) &&
4341 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4342 s->do_log(s);
4343 }
4344
4345 s->logs.accept_date = date; /* user-visible date for logging */
4346 s->logs.tv_accept = now; /* corrected date for internal use */
4347 tv_zero(&s->logs.tv_request);
4348 s->logs.t_queue = -1;
4349 s->logs.t_connect = -1;
4350 s->logs.t_data = -1;
4351 s->logs.t_close = 0;
4352 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4353 s->logs.srv_queue_size = 0; /* we will get this number soon */
4354
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4355 s->logs.bytes_in = s->req->total = s->req->buf->i;
4356 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4357
4358 if (s->pend_pos)
4359 pendconn_free(s->pend_pos);
4360
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4361 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4362 if (s->flags & SN_CURR_SESS) {
4363 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4364 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4365 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4366 if (may_dequeue_tasks(objt_server(s->target), s->be))
4367 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4368 }
4369
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4370 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4371
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4372 /* only release our endpoint if we don't intend to reuse the
4373 * connection.
4374 */
4375 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4376 !si_conn_ready(s->req->cons)) {
4377 si_release_endpoint(s->req->cons);
4378 }
4379
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4380 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4381 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4382 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4383 s->req->cons->exp = TICK_ETERNITY;
4384 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4385 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4386 s->rep->flags &= ~(CF_SHUTR|CF_SHUTR_NOW|CF_READ_ATTACHED|CF_READ_ERROR|CF_READ_NOEXP|CF_STREAMER|CF_STREAMER_FAST|CF_WRITE_PARTIAL|CF_NEVER_WAIT);
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]4387 s->flags &= ~(SN_DIRECT|SN_ASSIGNED|SN_ADDR_SET|SN_BE_ASSIGNED|SN_FORCE_PRST|SN_IGNORE_PRST);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4388 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4389
4390 if (s->flags & SN_COMP_READY)
4391 s->comp_algo->end(&s->comp_ctx);
4392 s->comp_algo = NULL;
4393 s->flags &= ~SN_COMP_READY;
4394
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4395 s->txn.meth = 0;
4396 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4397 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4398 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4399 s->req->cons->flags |= SI_FL_INDEP_STR;
4400
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4401 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4402 s->req->flags |= CF_NEVER_WAIT;
4403 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4404 }
4405
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4406 /* if the request buffer is not empty, it means we're
4407 * about to process another request, so send pending
4408 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4409 * Just don't do this if the buffer is close to be full,
4410 * because the request will wait for it to flush a little
4411 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4412 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4413 if (s->req->buf->i) {
4414 if (s->rep->buf->o &&
4415 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4416 bi_end(s->rep->buf) <= s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4417 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4418 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4419
4420 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4421 channel_auto_read(s->req);
4422 channel_auto_close(s->req);
4423 channel_auto_read(s->rep);
4424 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4425
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]4426 /* we're in keep-alive with an idle connection, monitor it */
4427 si_idle_conn(s->req->cons);
4428
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4429 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4430 s->rep->analysers = 0;
4431
4432 http_silent_debug(__LINE__, s);
4433}
4434
4435
4436/* This function updates the request state machine according to the response
4437 * state machine and buffer flags. It returns 1 if it changes anything (flag
4438 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4439 * it is only used to find when a request/response couple is complete. Both
4440 * this function and its equivalent should loop until both return zero. It
4441 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4442 */
4443int http_sync_req_state(struct session *s)
4444{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4445 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4446 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4447 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4448 unsigned int old_state = txn->req.msg_state;
4449
4450 http_silent_debug(__LINE__, s);
4451 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4452 return 0;
4453
4454 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4455 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4456 * We can shut the read side unless we want to abort_on_close,
4457 * or we have a POST request. The issue with POST requests is
4458 * that some browsers still send a CRLF after the request, and
4459 * this CRLF must be read so that it does not remain in the kernel
4460 * buffers, otherwise a close could cause an RST on some systems
4461 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4462 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4463 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4464 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4465
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4466 /* if the server closes the connection, we want to immediately react
4467 * and close the socket to save packets and syscalls.
4468 */
4469 chn->cons->flags |= SI_FL_NOHALF;
4470
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4471 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4472 goto wait_other_side;
4473
4474 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4475 /* The server has not finished to respond, so we
4476 * don't want to move in order not to upset it.
4477 */
4478 goto wait_other_side;
4479 }
4480
4481 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4482 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4483 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4484 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4485 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4486 goto wait_other_side;
4487 }
4488
4489 /* When we get here, it means that both the request and the
4490 * response have finished receiving. Depending on the connection
4491 * mode, we'll have to wait for the last bytes to leave in either
4492 * direction, and sometimes for a close to be effective.
4493 */
4494
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4495 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4496 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4497 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4498 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4499 }
4500 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4501 /* Option forceclose is set, or either side wants to close,
4502 * let's enforce it now that we're not expecting any new
4503 * data to come. The caller knows the session is complete
4504 * once both states are CLOSED.
4505 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4506 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4507 channel_shutr_now(chn);
4508 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4509 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4510 }
4511 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4512 /* The last possible modes are keep-alive and tunnel. Tunnel mode
4513 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4514 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4515 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
4516 channel_auto_read(chn);
4517 txn->req.msg_state = HTTP_MSG_TUNNEL;
4518 chn->flags |= CF_NEVER_WAIT;
4519 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4520 }
4521
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4522 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4523 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4524 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4525
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4526 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4527 txn->req.msg_state = HTTP_MSG_CLOSING;
4528 goto http_msg_closing;
4529 }
4530 else {
4531 txn->req.msg_state = HTTP_MSG_CLOSED;
4532 goto http_msg_closed;
4533 }
4534 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4535 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4536 }
4537
4538 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4539 http_msg_closing:
4540 /* nothing else to forward, just waiting for the output buffer
4541 * to be empty and for the shutw_now to take effect.
4542 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4543 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4544 txn->req.msg_state = HTTP_MSG_CLOSED;
4545 goto http_msg_closed;
4546 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4547 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4548 txn->req.msg_state = HTTP_MSG_ERROR;
4549 goto wait_other_side;
4550 }
4551 }
4552
4553 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4554 http_msg_closed:
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]4555 if (!(s->be->options & PR_O_ABRT_CLOSE))
4556 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4557 goto wait_other_side;
4558 }
4559
4560 wait_other_side:
4561 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4562 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4563}
4564
4565
4566/* This function updates the response state machine according to the request
4567 * state machine and buffer flags. It returns 1 if it changes anything (flag
4568 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4569 * it is only used to find when a request/response couple is complete. Both
4570 * this function and its equivalent should loop until both return zero. It
4571 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4572 */
4573int http_sync_res_state(struct session *s)
4574{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4575 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4576 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4577 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4578 unsigned int old_state = txn->rsp.msg_state;
4579
4580 http_silent_debug(__LINE__, s);
4581 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4582 return 0;
4583
4584 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4585 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4586 * still monitor the server connection for a possible close
4587 * while the request is being uploaded, so we don't disable
4588 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4589 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4590 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4591
4592 if (txn->req.msg_state == HTTP_MSG_ERROR)
4593 goto wait_other_side;
4594
4595 if (txn->req.msg_state < HTTP_MSG_DONE) {
4596 /* The client seems to still be sending data, probably
4597 * because we got an error response during an upload.
4598 * We have the choice of either breaking the connection
4599 * or letting it pass through. Let's do the later.
4600 */
4601 goto wait_other_side;
4602 }
4603
4604 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4605 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4606 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4607 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4608 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4609 goto wait_other_side;
4610 }
4611
4612 /* When we get here, it means that both the request and the
4613 * response have finished receiving. Depending on the connection
4614 * mode, we'll have to wait for the last bytes to leave in either
4615 * direction, and sometimes for a close to be effective.
4616 */
4617
4618 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4619 /* Server-close mode : shut read and wait for the request
4620 * side to close its output buffer. The caller will detect
4621 * when we're in DONE and the other is in CLOSED and will
4622 * catch that for the final cleanup.
4623 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4624 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4625 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4626 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4627 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4628 /* Option forceclose is set, or either side wants to close,
4629 * let's enforce it now that we're not expecting any new
4630 * data to come. The caller knows the session is complete
4631 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4632 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4633 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4634 channel_shutr_now(chn);
4635 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4636 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4637 }
4638 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4639 /* The last possible modes are keep-alive and tunnel. Tunnel will
4640 * need to forward remaining data. Keep-alive will need to monitor
4641 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4642 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4643 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4644 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4645 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
4646 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4647 }
4648
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4649 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4650 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4651 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4652 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4653 goto http_msg_closing;
4654 }
4655 else {
4656 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4657 goto http_msg_closed;
4658 }
4659 }
4660 goto wait_other_side;
4661 }
4662
4663 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4664 http_msg_closing:
4665 /* nothing else to forward, just waiting for the output buffer
4666 * to be empty and for the shutw_now to take effect.
4667 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4668 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4669 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4670 goto http_msg_closed;
4671 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4672 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4673 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4674 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4675 if (objt_server(s->target))
4676 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4677 goto wait_other_side;
4678 }
4679 }
4680
4681 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4682 http_msg_closed:
4683 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4684 bi_erase(chn);
4685 channel_auto_close(chn);
4686 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4687 goto wait_other_side;
4688 }
4689
4690 wait_other_side:
4691 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4692 /* We force the response to leave immediately if we're waiting for the
4693 * other side, since there is no pending shutdown to push it out.
4694 */
4695 if (!channel_is_empty(chn))
4696 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4697 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4698}
4699
4700
4701/* Resync the request and response state machines. Return 1 if either state
4702 * changes.
4703 */
4704int http_resync_states(struct session *s)
4705{
4706 struct http_txn *txn = &s->txn;
4707 int old_req_state = txn->req.msg_state;
4708 int old_res_state = txn->rsp.msg_state;
4709
4710 http_silent_debug(__LINE__, s);
4711 http_sync_req_state(s);
4712 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4713 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4714 if (!http_sync_res_state(s))
4715 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4716 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4717 if (!http_sync_req_state(s))
4718 break;
4719 }
4720 http_silent_debug(__LINE__, s);
4721 /* OK, both state machines agree on a compatible state.
4722 * There are a few cases we're interested in :
4723 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4724 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4725 * directions, so let's simply disable both analysers.
4726 * - HTTP_MSG_CLOSED on the response only means we must abort the
4727 * request.
4728 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4729 * with server-close mode means we've completed one request and we
4730 * must re-initialize the server connection.
4731 */
4732
4733 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4734 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4735 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4736 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4737 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4738 channel_auto_close(s->req);
4739 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4740 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4741 channel_auto_close(s->rep);
4742 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4743 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4744 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
4745 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4746 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4747 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4748 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4749 channel_auto_close(s->rep);
4750 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4751 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4752 channel_abort(s->req);
4753 channel_auto_close(s->req);
4754 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4755 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4756 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4757 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
4758 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4759 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4760 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4761 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4762 /* server-close/keep-alive: terminate this transaction,
4763 * possibly killing the server connection and reinitialize
4764 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4765 */
4766 http_end_txn_clean_session(s);
4767 }
4768
4769 http_silent_debug(__LINE__, s);
4770 return txn->req.msg_state != old_req_state ||
4771 txn->rsp.msg_state != old_res_state;
4772}
4773
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4774/* This function is an analyser which forwards request body (including chunk
4775 * sizes if any). It is called as soon as we must forward, even if we forward
4776 * zero byte. The only situation where it must not be called is when we're in
4777 * tunnel mode and we want to forward till the close. It's used both to forward
4778 * remaining data and to resync after end of body. It expects the msg_state to
4779 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4780 * 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]4781 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4782 * bytes of pending data + the headers if not already done (between sol and sov).
4783 * 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]4784 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4785int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4786{
4787 struct http_txn *txn = &s->txn;
4788 struct http_msg *msg = &s->txn.req;
4789
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4790 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4791 return 0;
4792
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4793 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]4794 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4795 /* Output closed while we were sending data. We must abort and
4796 * wake the other side up.
4797 */
4798 msg->msg_state = HTTP_MSG_ERROR;
4799 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4800 return 1;
4801 }
4802
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4803 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4804 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4805
4806 /* Note that we don't have to send 100-continue back because we don't
4807 * need the data to complete our job, and it's up to the server to
4808 * decide whether to return 100, 417 or anything else in return of
4809 * an "Expect: 100-continue" header.
4810 */
4811
4812 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4813 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4814 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4815 * is still null. We must save the body in msg->next because it
4816 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4817 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4818 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4819
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4820 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4821 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4822 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4823 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4824 }
4825
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4826 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4827 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4828
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4829 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4830 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4831 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4832 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4833 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4834 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4835 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4836 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4837 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4838
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4839 if (msg->msg_state == HTTP_MSG_DATA) {
4840 /* must still forward */
4841 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4842 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4843
4844 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4845 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4846 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4847 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4848 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4849 }
4850 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4851 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4852 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4853 * TRAILERS state.
4854 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4855 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4856
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4857 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4858 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4859 else if (ret < 0) {
4860 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4861 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4862 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]4863 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4864 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4865 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4866 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4867 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4868 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4869 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4870
4871 if (ret == 0)
4872 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4873 else if (ret < 0) {
4874 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4875 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4876 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]4877 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4878 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4879 /* we're in MSG_CHUNK_SIZE now */
4880 }
4881 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4882 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4883
4884 if (ret == 0)
4885 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4886 else if (ret < 0) {
4887 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4888 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4889 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]4890 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4891 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4892 /* we're in HTTP_MSG_DONE now */
4893 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4894 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4895 int old_state = msg->msg_state;
4896
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4897 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4898 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4899 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4900 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4901 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4902 if (http_resync_states(s)) {
4903 /* some state changes occurred, maybe the analyser
4904 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4905 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4906 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4907 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4908 /* request errors are most likely due to
4909 * the server aborting the transfer.
4910 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4911 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4912 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4913 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4914 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4915 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4916 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4917 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4918 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4919
4920 /* If "option abortonclose" is set on the backend, we
4921 * want to monitor the client's connection and forward
4922 * any shutdown notification to the server, which will
4923 * decide whether to close or to go on processing the
4924 * request.
4925 */
4926 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4927 channel_auto_read(req);
4928 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4929 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4930 else if (s->txn.meth == HTTP_METH_POST) {
4931 /* POST requests may require to read extra CRLF
4932 * sent by broken browsers and which could cause
4933 * an RST to be sent upon close on some systems
4934 * (eg: Linux).
4935 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4936 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4937 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4938
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4939 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4940 }
4941 }
4942
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4943 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4944 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4945 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4946 if (!(s->flags & SN_ERR_MASK))
4947 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4948 if (!(s->flags & SN_FINST_MASK)) {
4949 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4950 s->flags |= SN_FINST_H;
4951 else
4952 s->flags |= SN_FINST_D;
4953 }
4954
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4955 s->fe->fe_counters.cli_aborts++;
4956 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4957 if (objt_server(s->target))
4958 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4959
4960 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4961 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4962
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4963 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4964 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4965 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4966
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4967 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4968 * 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]4969 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4970 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4971 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4972
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4973 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4974 * 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]4975 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4976 * modes are already handled by the stream sock layer. We must not do
4977 * this in content-length mode because it could present the MSG_MORE
4978 * flag with the last block of forwarded data, which would cause an
4979 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4980 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4981 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4982 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4983
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4984 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4985 return 0;
4986
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4987 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4988 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4989 if (s->listener->counters)
4990 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4991 return_bad_req_stats_ok:
4992 txn->req.msg_state = HTTP_MSG_ERROR;
4993 if (txn->status) {
4994 /* Note: we don't send any error if some data were already sent */
4995 stream_int_retnclose(req->prod, NULL);
4996 } else {
4997 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4998 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4999 }
5000 req->analysers = 0;
5001 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]5002
5003 if (!(s->flags & SN_ERR_MASK))
5004 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5005 if (!(s->flags & SN_FINST_MASK)) {
5006 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5007 s->flags |= SN_FINST_H;
5008 else
5009 s->flags |= SN_FINST_D;
5010 }
5011 return 0;
5012
5013 aborted_xfer:
5014 txn->req.msg_state = HTTP_MSG_ERROR;
5015 if (txn->status) {
5016 /* Note: we don't send any error if some data were already sent */
5017 stream_int_retnclose(req->prod, NULL);
5018 } else {
5019 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5020 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5021 }
5022 req->analysers = 0;
5023 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5024
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5025 s->fe->fe_counters.srv_aborts++;
5026 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5027 if (objt_server(s->target))
5028 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5029
5030 if (!(s->flags & SN_ERR_MASK))
5031 s->flags |= SN_ERR_SRVCL;
5032 if (!(s->flags & SN_FINST_MASK)) {
5033 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5034 s->flags |= SN_FINST_H;
5035 else
5036 s->flags |= SN_FINST_D;
5037 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5038 return 0;
5039}
5040
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5041/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5042 * processing can continue on next analysers, or zero if it either needs more
5043 * data or wants to immediately abort the response (eg: timeout, error, ...). It
5044 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
5045 * when it has nothing left to do, and may remove any analyser when it wants to
5046 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5047 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5048int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5049{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5050 struct http_txn *txn = &s->txn;
5051 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5052 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5053 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5054 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5055 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5056
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5057 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]5058 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5059 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5060 rep,
5061 rep->rex, rep->wex,
5062 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5063 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5064 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5065
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5066 /*
5067 * Now parse the partial (or complete) lines.
5068 * We will check the response syntax, and also join multi-line
5069 * headers. An index of all the lines will be elaborated while
5070 * parsing.
5071 *
5072 * For the parsing, we use a 28 states FSM.
5073 *
5074 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5075 * rep->buf->p = beginning of response
5076 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5077 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5078 * msg->eol = end of current header or line (LF or CRLF)
5079 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5080 */
5081
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5082 /* There's a protected area at the end of the buffer for rewriting
5083 * purposes. We don't want to start to parse the request if the
5084 * protected area is affected, because we may have to move processed
5085 * data later, which is much more complicated.
5086 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5087 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5088 if (unlikely(!channel_reserved(rep))) {
5089 /* some data has still not left the buffer, wake us once that's done */
5090 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5091 goto abort_response;
5092 channel_dont_close(rep);
5093 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
5094 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5095 }
5096
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5097 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5098 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5099 buffer_slow_realign(rep->buf);
5100
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5101 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5102 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5103 }
5104
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5105 /* 1: we might have to print this header in debug mode */
5106 if (unlikely((global.mode & MODE_DEBUG) &&
5107 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5108 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5109 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5110
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5111 sol = rep->buf->p;
5112 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5113 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5114
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5115 sol += hdr_idx_first_pos(&txn->hdr_idx);
5116 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5117
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5118 while (cur_idx) {
5119 eol = sol + txn->hdr_idx.v[cur_idx].len;
5120 debug_hdr("srvhdr", s, sol, eol);
5121 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5122 cur_idx = txn->hdr_idx.v[cur_idx].next;
5123 }
5124 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5125
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5126 /*
5127 * Now we quickly check if we have found a full valid response.
5128 * If not so, we check the FD and buffer states before leaving.
5129 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5130 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5131 * responses are checked first.
5132 *
5133 * Depending on whether the client is still there or not, we
5134 * may send an error response back or not. Note that normally
5135 * we should only check for HTTP status there, and check I/O
5136 * errors somewhere else.
5137 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5138
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5139 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5140 /* Invalid response */
5141 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5142 /* we detected a parsing error. We want to archive this response
5143 * in the dedicated proxy area for later troubleshooting.
5144 */
5145 hdr_response_bad:
5146 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5147 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]5148
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5149 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5150 if (objt_server(s->target)) {
5151 objt_server(s->target)->counters.failed_resp++;
5152 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5153 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5154 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5155 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5156 rep->analysers = 0;
5157 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5158 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5159 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5160 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5161
5162 if (!(s->flags & SN_ERR_MASK))
5163 s->flags |= SN_ERR_PRXCOND;
5164 if (!(s->flags & SN_FINST_MASK))
5165 s->flags |= SN_FINST_H;
5166
5167 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5168 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5169
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5170 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5171 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5172 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5173 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5174 goto hdr_response_bad;
5175 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5176
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5177 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5178 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5179 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5180 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5181 else if (txn->flags & TX_NOT_FIRST)
5182 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5183
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5184 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5185 if (objt_server(s->target)) {
5186 objt_server(s->target)->counters.failed_resp++;
5187 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5188 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5189
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5190 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5191 rep->analysers = 0;
5192 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5193 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5194 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5195 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5196
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5197 if (!(s->flags & SN_ERR_MASK))
5198 s->flags |= SN_ERR_SRVCL;
5199 if (!(s->flags & SN_FINST_MASK))
5200 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5201 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5202 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5203
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5204 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5205 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5206 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5207 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5208 else if (txn->flags & TX_NOT_FIRST)
5209 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5210
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5211 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5212 if (objt_server(s->target)) {
5213 objt_server(s->target)->counters.failed_resp++;
5214 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5215 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5216
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5217 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5218 rep->analysers = 0;
5219 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5220 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5221 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5222 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5223
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5224 if (!(s->flags & SN_ERR_MASK))
5225 s->flags |= SN_ERR_SRVTO;
5226 if (!(s->flags & SN_FINST_MASK))
5227 s->flags |= SN_FINST_H;
5228 return 0;
5229 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5230
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5231 /* client abort with an abortonclose */
5232 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5233 s->fe->fe_counters.cli_aborts++;
5234 s->be->be_counters.cli_aborts++;
5235 if (objt_server(s->target))
5236 objt_server(s->target)->counters.cli_aborts++;
5237
5238 rep->analysers = 0;
5239 channel_auto_close(rep);
5240
5241 txn->status = 400;
5242 bi_erase(rep);
5243 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5244
5245 if (!(s->flags & SN_ERR_MASK))
5246 s->flags |= SN_ERR_CLICL;
5247 if (!(s->flags & SN_FINST_MASK))
5248 s->flags |= SN_FINST_H;
5249
5250 /* process_session() will take care of the error */
5251 return 0;
5252 }
5253
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5254 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5255 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5256 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5257 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5258 else if (txn->flags & TX_NOT_FIRST)
5259 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5260
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5261 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5262 if (objt_server(s->target)) {
5263 objt_server(s->target)->counters.failed_resp++;
5264 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5265 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5266
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5267 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5268 rep->analysers = 0;
5269 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5270 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5271 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5272 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5273
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5274 if (!(s->flags & SN_ERR_MASK))
5275 s->flags |= SN_ERR_SRVCL;
5276 if (!(s->flags & SN_FINST_MASK))
5277 s->flags |= SN_FINST_H;
5278 return 0;
5279 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5280
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5281 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5282 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5283 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5284 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5285 else if (txn->flags & TX_NOT_FIRST)
5286 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5287
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5288 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5289 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5290 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5291
5292 if (!(s->flags & SN_ERR_MASK))
5293 s->flags |= SN_ERR_CLICL;
5294 if (!(s->flags & SN_FINST_MASK))
5295 s->flags |= SN_FINST_H;
5296
5297 /* process_session() will take care of the error */
5298 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5299 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5300
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5301 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5302 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5303 return 0;
5304 }
5305
5306 /* More interesting part now : we know that we have a complete
5307 * response which at least looks like HTTP. We have an indicator
5308 * of each header's length, so we can parse them quickly.
5309 */
5310
5311 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5312 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]5313
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5314 /*
5315 * 1: get the status code
5316 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5317 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5318 if (n < 1 || n > 5)
5319 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5320 /* when the client triggers a 4xx from the server, it's most often due
5321 * to a missing object or permission. These events should be tracked
5322 * because if they happen often, it may indicate a brute force or a
5323 * vulnerability scan.
5324 */
5325 if (n == 4)
5326 session_inc_http_err_ctr(s);
5327
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5328 if (objt_server(s->target))
5329 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5330
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5331 /* check if the response is HTTP/1.1 or above */
5332 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5333 ((rep->buf->p[5] > '1') ||
5334 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5335 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5336
5337 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5338 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]5339
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5340 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5341 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5342
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5343 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]5344
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5345 /* Adjust server's health based on status code. Note: status codes 501
5346 * and 505 are triggered on demand by client request, so we must not
5347 * count them as server failures.
5348 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5349 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5350 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5351 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5352 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5353 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5354 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5355
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5356 /*
5357 * 2: check for cacheability.
5358 */
5359
5360 switch (txn->status) {
5361 case 200:
5362 case 203:
5363 case 206:
5364 case 300:
5365 case 301:
5366 case 410:
5367 /* RFC2616 @13.4:
5368 * "A response received with a status code of
5369 * 200, 203, 206, 300, 301 or 410 MAY be stored
5370 * by a cache (...) unless a cache-control
5371 * directive prohibits caching."
5372 *
5373 * RFC2616 @9.5: POST method :
5374 * "Responses to this method are not cacheable,
5375 * unless the response includes appropriate
5376 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5377 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5378 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5379 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5380 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5381 break;
5382 default:
5383 break;
5384 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5385
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5386 /*
5387 * 3: we may need to capture headers
5388 */
5389 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5390 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5391 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5392 txn->rsp.cap, s->fe->rsp_cap);
5393
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5394 /* 4: determine the transfer-length.
5395 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5396 * the presence of a message-body in a RESPONSE and its transfer length
5397 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5398 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5399 * All responses to the HEAD request method MUST NOT include a
5400 * message-body, even though the presence of entity-header fields
5401 * might lead one to believe they do. All 1xx (informational), 204
5402 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5403 * message-body. All other responses do include a message-body,
5404 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5405 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5406 * 1. Any response which "MUST NOT" include a message-body (such as the
5407 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5408 * always terminated by the first empty line after the header fields,
5409 * regardless of the entity-header fields present in the message.
5410 *
5411 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5412 * the "chunked" transfer-coding (Section 6.2) is used, the
5413 * transfer-length is defined by the use of this transfer-coding.
5414 * If a Transfer-Encoding header field is present and the "chunked"
5415 * transfer-coding is not present, the transfer-length is defined by
5416 * the sender closing the connection.
5417 *
5418 * 3. If a Content-Length header field is present, its decimal value in
5419 * OCTETs represents both the entity-length and the transfer-length.
5420 * If a message is received with both a Transfer-Encoding header
5421 * field and a Content-Length header field, the latter MUST be ignored.
5422 *
5423 * 4. If the message uses the media type "multipart/byteranges", and
5424 * the transfer-length is not otherwise specified, then this self-
5425 * delimiting media type defines the transfer-length. This media
5426 * type MUST NOT be used unless the sender knows that the recipient
5427 * can parse it; the presence in a request of a Range header with
5428 * multiple byte-range specifiers from a 1.1 client implies that the
5429 * client can parse multipart/byteranges responses.
5430 *
5431 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5432 */
5433
5434 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5435 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5436 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5437 * FIXME: should we parse anyway and return an error on chunked encoding ?
5438 */
5439 if (txn->meth == HTTP_METH_HEAD ||
5440 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5441 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5442 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5443 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5444 goto skip_content_length;
5445 }
5446
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5447 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5448 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5449 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5450 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5451 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5452 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5453 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5454 /* bad transfer-encoding (chunked followed by something else) */
5455 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5456 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5457 break;
5458 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5459 }
5460
5461 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5462 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5463 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5464 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5465 signed long long cl;
5466
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5467 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5468 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5469 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5470 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5471
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5472 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5473 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5474 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5475 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5476
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5477 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5478 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5479 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5480 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5481
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5482 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5483 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5484 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5485 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5486
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5487 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5488 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5489 }
5490
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5491 if (s->fe->comp || s->be->comp)
5492 select_compression_response_header(s, rep->buf);
5493
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5494 /* FIXME: we should also implement the multipart/byterange method.
5495 * For now on, we resort to close mode in this case (unknown length).
5496 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5497skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5498
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5499 /* end of job, return OK */
5500 rep->analysers &= ~an_bit;
5501 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5502 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5503 return 1;
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5504
5505 abort_keep_alive:
5506 /* A keep-alive request to the server failed on a network error.
5507 * The client is required to retry. We need to close without returning
5508 * any other information so that the client retries.
5509 */
5510 txn->status = 0;
5511 rep->analysers = 0;
5512 s->req->analysers = 0;
5513 channel_auto_close(rep);
5514 s->logs.logwait = 0;
5515 s->logs.level = 0;
5516 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
5517 bi_erase(rep);
5518 stream_int_retnclose(rep->cons, NULL);
5519 return 0;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5520}
5521
5522/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5523 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5524 * and updates t->rep->analysers. It might make sense to explode it into several
5525 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5526 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5527int 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]5528{
5529 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5530 struct http_msg *msg = &txn->rsp;
5531 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5532 struct cond_wordlist *wl;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5533 struct http_res_rule *http_res_last_rule = NULL;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5534
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5535 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]5536 now_ms, __FUNCTION__,
5537 t,
5538 rep,
5539 rep->rex, rep->wex,
5540 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5541 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5542 rep->analysers);
5543
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5544 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5545 return 0;
5546
5547 rep->analysers &= ~an_bit;
5548 rep->analyse_exp = TICK_ETERNITY;
5549
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5550 /* Now we have to check if we need to modify the Connection header.
5551 * This is more difficult on the response than it is on the request,
5552 * because we can have two different HTTP versions and we don't know
5553 * how the client will interprete a response. For instance, let's say
5554 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5555 * HTTP/1.1 response without any header. Maybe it will bound itself to
5556 * HTTP/1.0 because it only knows about it, and will consider the lack
5557 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5558 * the lack of header as a keep-alive. Thus we will use two flags
5559 * indicating how a request MAY be understood by the client. In case
5560 * of multiple possibilities, we'll fix the header to be explicit. If
5561 * ambiguous cases such as both close and keepalive are seen, then we
5562 * will fall back to explicit close. Note that we won't take risks with
5563 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5564 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5565 */
5566
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5567 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5568 txn->status == 101)) {
5569 /* Either we've established an explicit tunnel, or we're
5570 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5571 * to understand the next protocols. We have to switch to tunnel
5572 * mode, so that we transfer the request and responses then let
5573 * this protocol pass unmodified. When we later implement specific
5574 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5575 * header which contains information about that protocol for
5576 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5577 */
5578 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5579 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5580 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5581 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5582 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5583 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5584
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5585 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5586 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5587 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5588 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5589
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5590 /* now adjust header transformations depending on current state */
5591 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5592 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5593 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5594 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5595 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5596 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5597 else { /* SCL / KAL */
5598 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5599 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5600 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5601 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5602
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5603 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5604 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5605
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5606 /* Some keep-alive responses are converted to Server-close if
5607 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5608 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5609 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5610 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5611 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5612 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5613 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5614 }
5615
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5616 /* we want to have the response time before we start processing it */
5617 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
5618
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5619 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5620 /*
5621 * 3: we will have to evaluate the filters.
5622 * As opposed to version 1.2, now they will be evaluated in the
5623 * filters order and not in the header order. This means that
5624 * each filter has to be validated among all headers.
5625 *
5626 * Filters are tried with ->be first, then with ->fe if it is
5627 * different from ->be.
5628 */
5629
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5630 cur_proxy = t->be;
5631 while (1) {
5632 struct proxy *rule_set = cur_proxy;
5633
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5634 /* evaluate http-response rules */
5635 if (!http_res_last_rule)
5636 http_res_last_rule = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, t, txn);
5637
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5638 /* try headers filters */
5639 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5640 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5641 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5642 if (objt_server(t->target)) {
5643 objt_server(t->target)->counters.failed_resp++;
5644 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5645 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5646 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5647 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5648 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5649 txn->status = 502;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5650 t->logs.t_data = -1; /* was not a valid response */
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5651 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5652 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5653 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5654 if (!(t->flags & SN_ERR_MASK))
5655 t->flags |= SN_ERR_PRXCOND;
5656 if (!(t->flags & SN_FINST_MASK))
5657 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5658 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5659 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5660 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5661
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5662 /* has the response been denied ? */
5663 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5664 if (objt_server(t->target))
5665 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5666
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5667 t->be->be_counters.denied_resp++;
5668 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5669 if (t->listener->counters)
5670 t->listener->counters->denied_resp++;
5671
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5672 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5673 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5674
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5675 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5676 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5677 if (txn->status < 200)
5678 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5679 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5680 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]5681 ret = acl_pass(ret);
5682 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5683 ret = !ret;
5684 if (!ret)
5685 continue;
5686 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5687 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5688 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5689 }
5690
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5691 /* check whether we're already working on the frontend */
5692 if (cur_proxy == t->fe)
5693 break;
5694 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5695 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5696
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5697 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5698 * We may be facing a 100-continue response, in which case this
5699 * is not the right response, and we're waiting for the next one.
5700 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5701 * next one.
5702 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5703 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5704 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5705 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5706 msg->msg_state = HTTP_MSG_RPBEFORE;
5707 txn->status = 0;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5708 t->logs.t_data = -1; /* was not a response yet */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5709 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5710 return 1;
5711 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5712 else if (unlikely(txn->status < 200))
5713 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5714
5715 /* we don't have any 1xx status code now */
5716
5717 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5718 * 4: check for server cookie.
5719 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5720 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5721 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5722 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5723
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5724
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5725 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5726 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5727 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5728 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]5729 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5730
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5731 /*
5732 * 6: add server cookie in the response if needed
5733 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5734 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5735 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5736 (!(t->flags & SN_DIRECT) ||
5737 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5738 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5739 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5740 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5741 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5742 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5743 /* the server is known, it's not the one the client requested, or the
5744 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5745 * insert a set-cookie here, except if we want to insert only on POST
5746 * requests and this one isn't. Note that servers which don't have cookies
5747 * (eg: some backup servers) will return a full cookie removal request.
5748 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5749 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5750 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5751 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5752 t->be->cookie_name);
5753 }
5754 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5755 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]5756
5757 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5758 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5759 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5760 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5761 trash.len += 5;
5762
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5763 if (t->be->cookie_maxlife) {
5764 /* emit first_date, which is either the original one or
5765 * the current date.
5766 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5767 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5768 s30tob64(txn->cookie_first_date ?
5769 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5770 (date.tv_sec+3) >> 2, trash.str + trash.len);
5771 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5772 }
5773 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5774 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5775 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5776
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5777 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5778 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5779
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5780 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5781 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5782
5783 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5784 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5785
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5786 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]5787 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5788
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5789 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5790 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5791 /* the server did not change, only the date was updated */
5792 txn->flags |= TX_SCK_UPDATED;
5793 else
5794 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5795
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5796 /* Here, we will tell an eventual cache on the client side that we don't
5797 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5798 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5799 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5800 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5801 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5802
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5803 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5804
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5805 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5806 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5807 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5808 }
5809 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5810
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5811 /*
5812 * 7: check if result will be cacheable with a cookie.
5813 * We'll block the response if security checks have caught
5814 * nasty things such as a cacheable cookie.
5815 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5816 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5817 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5818 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5819
5820 /* we're in presence of a cacheable response containing
5821 * a set-cookie header. We'll block it as requested by
5822 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5823 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5824 if (objt_server(t->target))
5825 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5826
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5827 t->be->be_counters.denied_resp++;
5828 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5829 if (t->listener->counters)
5830 t->listener->counters->denied_resp++;
5831
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5832 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5833 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5834 send_log(t->be, LOG_ALERT,
5835 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5836 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5837 goto return_srv_prx_502;
5838 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5839
5840 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5841 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5842 * If an "Upgrade" token is found, the header is left untouched in order
5843 * not to have to deal with some client bugs : some of them fail an upgrade
5844 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5845 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5846 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5847 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5848 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5849 unsigned int want_flags = 0;
5850
5851 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5852 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5853 /* we want a keep-alive response here. Keep-alive header
5854 * required if either side is not 1.1.
5855 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5856 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5857 want_flags |= TX_CON_KAL_SET;
5858 }
5859 else {
5860 /* we want a close response here. Close header required if
5861 * the server is 1.1, regardless of the client.
5862 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5863 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5864 want_flags |= TX_CON_CLO_SET;
5865 }
5866
5867 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5868 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5869 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5870
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5871 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5872 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5873 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5874 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5875
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5876 /*************************************************************
5877 * OK, that's finished for the headers. We have done what we *
5878 * could. Let's switch to the DATA state. *
5879 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5880
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5881 /* if the user wants to log as soon as possible, without counting
5882 * bytes from the server, then this is the right moment. We have
5883 * to temporarily assign bytes_out to log what we currently have.
5884 */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]5885 if (!LIST_ISEMPTY(&t->fe->logformat) && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5886 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5887 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5888 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5889 t->logs.bytes_out = 0;
5890 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5891
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5892 /* Note: we must not try to cheat by jumping directly to DATA,
5893 * otherwise we would not let the client side wake up.
5894 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5895
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5896 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5897 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5898 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5899}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5900
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5901/* This function is an analyser which forwards response body (including chunk
5902 * sizes if any). It is called as soon as we must forward, even if we forward
5903 * zero byte. The only situation where it must not be called is when we're in
5904 * tunnel mode and we want to forward till the close. It's used both to forward
5905 * remaining data and to resync after end of body. It expects the msg_state to
5906 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5907 * 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]5908 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5909 * bytes of pending data + the headers if not already done (between sol and sov).
5910 * 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]5911 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5912int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5913{
5914 struct http_txn *txn = &s->txn;
5915 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5916 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5917 static struct buffer *tmpbuf = NULL;
5918 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5919 int consumed_data = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5920 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5921
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5922 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5923 return 0;
5924
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5925 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]5926 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5927 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5928 /* Output closed while we were sending data. We must abort and
5929 * wake the other side up.
5930 */
5931 msg->msg_state = HTTP_MSG_ERROR;
5932 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5933 return 1;
5934 }
5935
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5936 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5937 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5938
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5939 /* this is the first time we need the compression buffer */
5940 if (s->comp_algo != NULL && tmpbuf == NULL) {
5941 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5942 goto aborted_xfer; /* no memory */
5943 }
5944
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5945 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5946 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5947 * rep->buf.p still points to the beginning of the message and msg->sol
5948 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5949 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5950 channel_forward(res, msg->sov);
5951 msg->next = 0;
5952 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5953
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5954 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5955 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5956 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5957 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5958 }
5959
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5960 if (s->comp_algo != NULL) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5961 ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5962 if (ret < 0)
5963 goto missing_data; /* not enough spaces in buffers */
5964 compressing = 1;
5965 }
5966
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5967 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5968 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5969 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5970 if (s->comp_algo == NULL) {
5971 bytes = msg->sov - msg->sol;
5972 if (msg->chunk_len || bytes) {
5973 msg->sol = msg->sov;
5974 msg->next -= bytes; /* will be forwarded */
5975 msg->chunk_len += bytes;
5976 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5977 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5978 }
5979
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5980 switch (msg->msg_state - HTTP_MSG_DATA) {
5981 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5982 if (compressing) {
5983 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
5984 if (ret < 0)
5985 goto aborted_xfer;
5986 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5987
5988 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5989 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5990
5991 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5992 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5993 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5994 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5995 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5996 if (compressing && consumed_data) {
5997 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5998 compressing = 0;
5999 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6000 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6001 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6002 /* fall through for HTTP_MSG_CHUNK_CRLF */
6003
6004 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6005 /* we want the CRLF after the data */
6006
6007 ret = http_skip_chunk_crlf(msg);
6008 if (ret == 0)
6009 goto missing_data;
6010 else if (ret < 0) {
6011 if (msg->err_pos >= 0)
6012 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
6013 goto return_bad_res;
6014 }
6015 /* skipping data in buffer for compression */
6016 if (compressing) {
6017 b_adv(res->buf, msg->next);
6018 msg->next = 0;
6019 msg->sov = 0;
6020 msg->sol = 0;
6021 }
6022 /* we're in MSG_CHUNK_SIZE now, fall through */
6023
6024 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6025 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6026 * set ->sov and ->next to point to the body and switch to DATA or
6027 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6028 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6029
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6030 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6031 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6032 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6033 else if (ret < 0) {
6034 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6035 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]6036 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6037 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6038 if (compressing) {
6039 if (likely(msg->chunk_len > 0)) {
6040 /* skipping data if we are in compression mode */
6041 b_adv(res->buf, msg->next);
6042 msg->next = 0;
6043 msg->sov = 0;
6044 msg->sol = 0;
6045 } else {
6046 if (consumed_data) {
6047 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6048 compressing = 0;
6049 }
6050 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6051 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6052 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6053 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6054
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6055 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
6056 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6057 if (ret == 0)
6058 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6059 else if (ret < 0) {
6060 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6061 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]6062 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6063 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]6064 if (s->comp_algo != NULL) {
6065 /* forwarding trailers */
6066 channel_forward(res, msg->next);
6067 msg->next = 0;
6068 }
Willy Tarreau2d43e182013-04-03 00:22:25 +0200[diff] [blame]6069 /* we're in HTTP_MSG_DONE now, but we might still have
6070 * some data pending, so let's loop over once.
6071 */
6072 break;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6073
6074 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6075 /* other states, DONE...TUNNEL */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6076
6077 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6078 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6079 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6080 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6081 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6082 if (http_resync_states(s)) {
6083 http_silent_debug(__LINE__, s);
6084 /* some state changes occurred, maybe the analyser
6085 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6086 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6087 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6088 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6089 /* response errors are most likely due to
6090 * the client aborting the transfer.
6091 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6092 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6093 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6094 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6095 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6096 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6097 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6098 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6099 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6100 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6101 }
6102 }
6103
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6104 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6105 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6106 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
6107 compressing = 0;
6108 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6109
6110 if (res->flags & CF_SHUTW)
6111 goto aborted_xfer;
6112
6113 /* stop waiting for data if the input is closed before the end. If the
6114 * client side was already closed, it means that the client has aborted,
6115 * so we don't want to count this as a server abort. Otherwise it's a
6116 * server abort.
6117 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6118 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6119 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
6120 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6121 if (!(s->flags & SN_ERR_MASK))
6122 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6123 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6124 if (objt_server(s->target))
6125 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6126 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6127 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6128
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6129 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6130 if (!s->req->analysers)
6131 goto return_bad_res;
6132
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]6133 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6134 if (s->comp_algo == NULL) {
6135 bytes = msg->sov - msg->sol;
6136 if (msg->chunk_len || bytes) {
6137 msg->sol = msg->sov;
6138 msg->next -= bytes; /* will be forwarded */
6139 msg->chunk_len += bytes;
6140 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6141 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6142 }
6143
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6144 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6145 * 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]6146 * Similarly, with keep-alive on the client side, we don't want to forward a
6147 * close.
6148 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6149 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6150 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6151 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6152 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6153
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6154 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6155 * 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]6156 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6157 * modes are already handled by the stream sock layer. We must not do
6158 * this in content-length mode because it could present the MSG_MORE
6159 * flag with the last block of forwarded data, which would cause an
6160 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6161 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6162 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6163 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6164
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6165 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6166 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6167 return 0;
6168
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6169 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6170 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6171 if (objt_server(s->target))
6172 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6173
6174 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6175 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6176 /* don't send any error message as we're in the body */
6177 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6178 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6179 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]6180 if (objt_server(s->target))
6181 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6182
6183 if (!(s->flags & SN_ERR_MASK))
6184 s->flags |= SN_ERR_PRXCOND;
6185 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6186 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6187 return 0;
6188
6189 aborted_xfer:
6190 txn->rsp.msg_state = HTTP_MSG_ERROR;
6191 /* don't send any error message as we're in the body */
6192 stream_int_retnclose(res->cons, NULL);
6193 res->analysers = 0;
6194 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6195
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6196 s->fe->fe_counters.cli_aborts++;
6197 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6198 if (objt_server(s->target))
6199 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6200
6201 if (!(s->flags & SN_ERR_MASK))
6202 s->flags |= SN_ERR_CLICL;
6203 if (!(s->flags & SN_FINST_MASK))
6204 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6205 return 0;
6206}
6207
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6208/* Iterate the same filter through all request headers.
6209 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6210 * Since it can manage the switch to another backend, it updates the per-proxy
6211 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6212 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6213int 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]6214{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6215 char term;
6216 char *cur_ptr, *cur_end, *cur_next;
6217 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6218 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6219 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6220 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6221
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6222 last_hdr = 0;
6223
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6224 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6225 old_idx = 0;
6226
6227 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6228 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6229 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6230 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6231 (exp->action == ACT_ALLOW ||
6232 exp->action == ACT_DENY ||
6233 exp->action == ACT_TARPIT))
6234 return 0;
6235
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6236 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6237 if (!cur_idx)
6238 break;
6239
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6240 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6241 cur_ptr = cur_next;
6242 cur_end = cur_ptr + cur_hdr->len;
6243 cur_next = cur_end + cur_hdr->cr + 1;
6244
6245 /* Now we have one header between cur_ptr and cur_end,
6246 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6247 */
6248
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6249 /* The annoying part is that pattern matching needs
6250 * that we modify the contents to null-terminate all
6251 * strings before testing them.
6252 */
6253
6254 term = *cur_end;
6255 *cur_end = '\0';
6256
6257 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6258 switch (exp->action) {
6259 case ACT_SETBE:
6260 /* It is not possible to jump a second time.
6261 * FIXME: should we return an HTTP/500 here so that
6262 * the admin knows there's a problem ?
6263 */
6264 if (t->be != t->fe)
6265 break;
6266
6267 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6268 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6269 last_hdr = 1;
6270 break;
6271
6272 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6273 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6274 last_hdr = 1;
6275 break;
6276
6277 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6278 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6279 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6280 break;
6281
6282 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6283 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6284 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6285 break;
6286
6287 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6288 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6289 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6290 /* FIXME: if the user adds a newline in the replacement, the
6291 * index will not be recalculated for now, and the new line
6292 * will not be counted as a new header.
6293 */
6294
6295 cur_end += delta;
6296 cur_next += delta;
6297 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6298 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6299 break;
6300
6301 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6302 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6303 cur_next += delta;
6304
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6305 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6306 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6307 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6308 cur_hdr->len = 0;
6309 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6310 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6311 break;
6312
6313 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6314 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6315 if (cur_end)
6316 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6317
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6318 /* keep the link from this header to next one in case of later
6319 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6320 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6321 old_idx = cur_idx;
6322 }
6323 return 0;
6324}
6325
6326
6327/* Apply the filter to the request line.
6328 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6329 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6330 * Since it can manage the switch to another backend, it updates the per-proxy
6331 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6332 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6333int 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]6334{
6335 char term;
6336 char *cur_ptr, *cur_end;
6337 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6338 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6339 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6340
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6341 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6342 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6343 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6344 (exp->action == ACT_ALLOW ||
6345 exp->action == ACT_DENY ||
6346 exp->action == ACT_TARPIT))
6347 return 0;
6348 else if (exp->action == ACT_REMOVE)
6349 return 0;
6350
6351 done = 0;
6352
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6353 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6354 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6355
6356 /* Now we have the request line between cur_ptr and cur_end */
6357
6358 /* The annoying part is that pattern matching needs
6359 * that we modify the contents to null-terminate all
6360 * strings before testing them.
6361 */
6362
6363 term = *cur_end;
6364 *cur_end = '\0';
6365
6366 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6367 switch (exp->action) {
6368 case ACT_SETBE:
6369 /* It is not possible to jump a second time.
6370 * FIXME: should we return an HTTP/500 here so that
6371 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6372 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6373 if (t->be != t->fe)
6374 break;
6375
6376 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6377 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6378 done = 1;
6379 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6380
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6381 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6382 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6383 done = 1;
6384 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6385
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6386 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6387 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6388 done = 1;
6389 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6390
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6391 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6392 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6393 done = 1;
6394 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6395
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6396 case ACT_REPLACE:
6397 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6398 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6399 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6400 /* FIXME: if the user adds a newline in the replacement, the
6401 * index will not be recalculated for now, and the new line
6402 * will not be counted as a new header.
6403 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6404
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6405 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6406 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6407 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6408 HTTP_MSG_RQMETH,
6409 cur_ptr, cur_end + 1,
6410 NULL, NULL);
6411 if (unlikely(!cur_end))
6412 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6413
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6414 /* we have a full request and we know that we have either a CR
6415 * or an LF at <ptr>.
6416 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6417 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6418 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]6419 /* there is no point trying this regex on headers */
6420 return 1;
6421 }
6422 }
6423 *cur_end = term; /* restore the string terminator */
6424 return done;
6425}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6426
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6427
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6428
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6429/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6430 * 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]6431 * 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]6432 * unparsable request. Since it can manage the switch to another backend, it
6433 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6434 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6435int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6436{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6437 struct http_txn *txn = &s->txn;
6438 struct hdr_exp *exp;
6439
6440 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6441 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6442
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6443 /*
6444 * The interleaving of transformations and verdicts
6445 * makes it difficult to decide to continue or stop
6446 * the evaluation.
6447 */
6448
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6449 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6450 break;
6451
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6452 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6453 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6454 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6455 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6456
6457 /* if this filter had a condition, evaluate it now and skip to
6458 * next filter if the condition does not match.
6459 */
6460 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6461 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]6462 ret = acl_pass(ret);
6463 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6464 ret = !ret;
6465
6466 if (!ret)
6467 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6468 }
6469
6470 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6471 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6472 if (unlikely(ret < 0))
6473 return -1;
6474
6475 if (likely(ret == 0)) {
6476 /* The filter did not match the request, it can be
6477 * iterated through all headers.
6478 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6479 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6480 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6481 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6482 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6483}
6484
6485
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6486
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6487/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6488 * Try to retrieve the server associated to the appsession.
6489 * If the server is found, it's assigned to the session.
6490 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6491void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6492 struct http_txn *txn = &t->txn;
6493 appsess *asession = NULL;
6494 char *sessid_temp = NULL;
6495
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6496 if (len > t->be->appsession_len) {
6497 len = t->be->appsession_len;
6498 }
6499
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6500 if (t->be->options2 & PR_O2_AS_REQL) {
6501 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6502 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6503 /* 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]6504 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6505 }
6506
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6507 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6508 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6509 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6510 return;
6511 }
6512
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6513 memcpy(txn->sessid, buf, len);
6514 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6515 }
6516
6517 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6518 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6519 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6520 return;
6521 }
6522
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6523 memcpy(sessid_temp, buf, len);
6524 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6525
6526 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6527 /* free previously allocated memory */
6528 pool_free2(apools.sessid, sessid_temp);
6529
6530 if (asession != NULL) {
6531 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6532 if (!(t->be->options2 & PR_O2_AS_REQL))
6533 asession->request_count++;
6534
6535 if (asession->serverid != NULL) {
6536 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6537
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6538 while (srv) {
6539 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6540 if ((srv->state & SRV_RUNNING) ||
6541 (t->be->options & PR_O_PERSIST) ||
6542 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6543 /* we found the server and it's usable */
6544 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6545 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6546 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6547 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6548
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6549 break;
6550 } else {
6551 txn->flags &= ~TX_CK_MASK;
6552 txn->flags |= TX_CK_DOWN;
6553 }
6554 }
6555 srv = srv->next;
6556 }
6557 }
6558 }
6559}
6560
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6561/* Find the end of a cookie value contained between <s> and <e>. It works the
6562 * same way as with headers above except that the semi-colon also ends a token.
6563 * See RFC2965 for more information. Note that it requires a valid header to
6564 * return a valid result.
6565 */
6566char *find_cookie_value_end(char *s, const char *e)
6567{
6568 int quoted, qdpair;
6569
6570 quoted = qdpair = 0;
6571 for (; s < e; s++) {
6572 if (qdpair) qdpair = 0;
6573 else if (quoted) {
6574 if (*s == '\\') qdpair = 1;
6575 else if (*s == '"') quoted = 0;
6576 }
6577 else if (*s == '"') quoted = 1;
6578 else if (*s == ',' || *s == ';') return s;
6579 }
6580 return s;
6581}
6582
6583/* Delete a value in a header between delimiters <from> and <next> in buffer
6584 * <buf>. The number of characters displaced is returned, and the pointer to
6585 * the first delimiter is updated if required. The function tries as much as
6586 * possible to respect the following principles :
6587 * - replace <from> delimiter by the <next> one unless <from> points to a
6588 * colon, in which case <next> is simply removed
6589 * - set exactly one space character after the new first delimiter, unless
6590 * there are not enough characters in the block being moved to do so.
6591 * - remove unneeded spaces before the previous delimiter and after the new
6592 * one.
6593 *
6594 * It is the caller's responsibility to ensure that :
6595 * - <from> points to a valid delimiter or the colon ;
6596 * - <next> points to a valid delimiter or the final CR/LF ;
6597 * - there are non-space chars before <from> ;
6598 * - there is a CR/LF at or after <next>.
6599 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6600int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6601{
6602 char *prev = *from;
6603
6604 if (*prev == ':') {
6605 /* We're removing the first value, preserve the colon and add a
6606 * space if possible.
6607 */
6608 if (!http_is_crlf[(unsigned char)*next])
6609 next++;
6610 prev++;
6611 if (prev < next)
6612 *prev++ = ' ';
6613
6614 while (http_is_spht[(unsigned char)*next])
6615 next++;
6616 } else {
6617 /* Remove useless spaces before the old delimiter. */
6618 while (http_is_spht[(unsigned char)*(prev-1)])
6619 prev--;
6620 *from = prev;
6621
6622 /* copy the delimiter and if possible a space if we're
6623 * not at the end of the line.
6624 */
6625 if (!http_is_crlf[(unsigned char)*next]) {
6626 *prev++ = *next++;
6627 if (prev + 1 < next)
6628 *prev++ = ' ';
6629 while (http_is_spht[(unsigned char)*next])
6630 next++;
6631 }
6632 }
6633 return buffer_replace2(buf, prev, next, NULL, 0);
6634}
6635
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6636/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6637 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6638 * desirable to call it only when needed. This code is quite complex because
6639 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6640 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6641 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6642void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6643{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6644 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6645 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6646 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6647 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6648 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6649
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6650 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6651 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6652 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6653
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6654 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6655 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6656 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6657
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6658 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6659 hdr_beg = hdr_next;
6660 hdr_end = hdr_beg + cur_hdr->len;
6661 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6662
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6663 /* We have one full header between hdr_beg and hdr_end, and the
6664 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6665 * "Cookie:" headers.
6666 */
6667
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6668 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6669 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6670 old_idx = cur_idx;
6671 continue;
6672 }
6673
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6674 del_from = NULL; /* nothing to be deleted */
6675 preserve_hdr = 0; /* assume we may kill the whole header */
6676
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6677 /* Now look for cookies. Conforming to RFC2109, we have to support
6678 * attributes whose name begin with a '$', and associate them with
6679 * the right cookie, if we want to delete this cookie.
6680 * So there are 3 cases for each cookie read :
6681 * 1) it's a special attribute, beginning with a '$' : ignore it.
6682 * 2) it's a server id cookie that we *MAY* want to delete : save
6683 * some pointers on it (last semi-colon, beginning of cookie...)
6684 * 3) it's an application cookie : we *MAY* have to delete a previous
6685 * "special" cookie.
6686 * At the end of loop, if a "special" cookie remains, we may have to
6687 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6688 * *MUST* delete it.
6689 *
6690 * Note: RFC2965 is unclear about the processing of spaces around
6691 * the equal sign in the ATTR=VALUE form. A careful inspection of
6692 * the RFC explicitly allows spaces before it, and not within the
6693 * tokens (attrs or values). An inspection of RFC2109 allows that
6694 * too but section 10.1.3 lets one think that spaces may be allowed
6695 * after the equal sign too, resulting in some (rare) buggy
6696 * implementations trying to do that. So let's do what servers do.
6697 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6698 * allowed quoted strings in values, with any possible character
6699 * after a backslash, including control chars and delimitors, which
6700 * causes parsing to become ambiguous. Browsers also allow spaces
6701 * within values even without quotes.
6702 *
6703 * We have to keep multiple pointers in order to support cookie
6704 * removal at the beginning, middle or end of header without
6705 * corrupting the header. All of these headers are valid :
6706 *
6707 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6708 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6709 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6710 * | | | | | | | | |
6711 * | | | | | | | | hdr_end <--+
6712 * | | | | | | | +--> next
6713 * | | | | | | +----> val_end
6714 * | | | | | +-----------> val_beg
6715 * | | | | +--------------> equal
6716 * | | | +----------------> att_end
6717 * | | +---------------------> att_beg
6718 * | +--------------------------> prev
6719 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6720 */
6721
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6722 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6723 /* Iterate through all cookies on this line */
6724
6725 /* find att_beg */
6726 att_beg = prev + 1;
6727 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6728 att_beg++;
6729
6730 /* find att_end : this is the first character after the last non
6731 * space before the equal. It may be equal to hdr_end.
6732 */
6733 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6734
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6735 while (equal < hdr_end) {
6736 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6737 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6738 if (http_is_spht[(unsigned char)*equal++])
6739 continue;
6740 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6741 }
6742
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6743 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6744 * is between <att_beg> and <equal>, both may be identical.
6745 */
6746
6747 /* look for end of cookie if there is an equal sign */
6748 if (equal < hdr_end && *equal == '=') {
6749 /* look for the beginning of the value */
6750 val_beg = equal + 1;
6751 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6752 val_beg++;
6753
6754 /* find the end of the value, respecting quotes */
6755 next = find_cookie_value_end(val_beg, hdr_end);
6756
6757 /* make val_end point to the first white space or delimitor after the value */
6758 val_end = next;
6759 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6760 val_end--;
6761 } else {
6762 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6763 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6764
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6765 /* We have nothing to do with attributes beginning with '$'. However,
6766 * they will automatically be removed if a header before them is removed,
6767 * since they're supposed to be linked together.
6768 */
6769 if (*att_beg == '$')
6770 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6771
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6772 /* Ignore cookies with no equal sign */
6773 if (equal == next) {
6774 /* This is not our cookie, so we must preserve it. But if we already
6775 * scheduled another cookie for removal, we cannot remove the
6776 * complete header, but we can remove the previous block itself.
6777 */
6778 preserve_hdr = 1;
6779 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6780 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6781 val_end += delta;
6782 next += delta;
6783 hdr_end += delta;
6784 hdr_next += delta;
6785 cur_hdr->len += delta;
6786 http_msg_move_end(&txn->req, delta);
6787 prev = del_from;
6788 del_from = NULL;
6789 }
6790 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6791 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6792
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6793 /* if there are spaces around the equal sign, we need to
6794 * strip them otherwise we'll get trouble for cookie captures,
6795 * or even for rewrites. Since this happens extremely rarely,
6796 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6797 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6798 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6799 int stripped_before = 0;
6800 int stripped_after = 0;
6801
6802 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6803 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6804 equal += stripped_before;
6805 val_beg += stripped_before;
6806 }
6807
6808 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6809 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6810 val_beg += stripped_after;
6811 stripped_before += stripped_after;
6812 }
6813
6814 val_end += stripped_before;
6815 next += stripped_before;
6816 hdr_end += stripped_before;
6817 hdr_next += stripped_before;
6818 cur_hdr->len += stripped_before;
6819 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6820 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6821 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6822
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6823 /* First, let's see if we want to capture this cookie. We check
6824 * that we don't already have a client side cookie, because we
6825 * can only capture one. Also as an optimisation, we ignore
6826 * cookies shorter than the declared name.
6827 */
6828 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6829 (val_end - att_beg >= t->fe->capture_namelen) &&
6830 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6831 int log_len = val_end - att_beg;
6832
6833 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6834 Alert("HTTP logging : out of memory.\n");
6835 } else {
6836 if (log_len > t->fe->capture_len)
6837 log_len = t->fe->capture_len;
6838 memcpy(txn->cli_cookie, att_beg, log_len);
6839 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6840 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6841 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6842
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6843 /* Persistence cookies in passive, rewrite or insert mode have the
6844 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6845 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6846 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6847 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6848 * For cookies in prefix mode, the form is :
6849 *
6850 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6851 */
6852 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6853 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6854 struct server *srv = t->be->srv;
6855 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6856
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6857 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6858 * have the server ID between val_beg and delim, and the original cookie between
6859 * delim+1 and val_end. Otherwise, delim==val_end :
6860 *
6861 * Cookie: NAME=SRV; # in all but prefix modes
6862 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6863 * | || || | |+-> next
6864 * | || || | +--> val_end
6865 * | || || +---------> delim
6866 * | || |+------------> val_beg
6867 * | || +-------------> att_end = equal
6868 * | |+-----------------> att_beg
6869 * | +------------------> prev
6870 * +-------------------------> hdr_beg
6871 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6872
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6873 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6874 for (delim = val_beg; delim < val_end; delim++)
6875 if (*delim == COOKIE_DELIM)
6876 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6877 } else {
6878 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6879 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6880 /* Now check if the cookie contains a date field, which would
6881 * appear after a vertical bar ('|') just after the server name
6882 * and before the delimiter.
6883 */
6884 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6885 if (vbar1) {
6886 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6887 * right is the last seen date. It is a base64 encoded
6888 * 30-bit value representing the UNIX date since the
6889 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6890 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6891 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6892 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6893 if (val_end - vbar1 >= 5) {
6894 val = b64tos30(vbar1);
6895 if (val > 0)
6896 txn->cookie_last_date = val << 2;
6897 }
6898 /* look for a second vertical bar */
6899 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6900 if (vbar1 && (val_end - vbar1 > 5)) {
6901 val = b64tos30(vbar1 + 1);
6902 if (val > 0)
6903 txn->cookie_first_date = val << 2;
6904 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6905 }
6906 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6907
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6908 /* if the cookie has an expiration date and the proxy wants to check
6909 * it, then we do that now. We first check if the cookie is too old,
6910 * then only if it has expired. We detect strict overflow because the
6911 * time resolution here is not great (4 seconds). Cookies with dates
6912 * in the future are ignored if their offset is beyond one day. This
6913 * allows an admin to fix timezone issues without expiring everyone
6914 * and at the same time avoids keeping unwanted side effects for too
6915 * long.
6916 */
6917 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6918 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6919 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6920 txn->flags &= ~TX_CK_MASK;
6921 txn->flags |= TX_CK_OLD;
6922 delim = val_beg; // let's pretend we have not found the cookie
6923 txn->cookie_first_date = 0;
6924 txn->cookie_last_date = 0;
6925 }
6926 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6927 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6928 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6929 txn->flags &= ~TX_CK_MASK;
6930 txn->flags |= TX_CK_EXPIRED;
6931 delim = val_beg; // let's pretend we have not found the cookie
6932 txn->cookie_first_date = 0;
6933 txn->cookie_last_date = 0;
6934 }
6935
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6936 /* Here, we'll look for the first running server which supports the cookie.
6937 * This allows to share a same cookie between several servers, for example
6938 * to dedicate backup servers to specific servers only.
6939 * However, to prevent clients from sticking to cookie-less backup server
6940 * when they have incidentely learned an empty cookie, we simply ignore
6941 * empty cookies and mark them as invalid.
6942 * The same behaviour is applied when persistence must be ignored.
6943 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6944 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6945 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6946
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6947 while (srv) {
6948 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6949 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6950 if ((srv->state & SRV_RUNNING) ||
6951 (t->be->options & PR_O_PERSIST) ||
6952 (t->flags & SN_FORCE_PRST)) {
6953 /* we found the server and we can use it */
6954 txn->flags &= ~TX_CK_MASK;
6955 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6956 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6957 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6958 break;
6959 } else {
6960 /* we found a server, but it's down,
6961 * mark it as such and go on in case
6962 * another one is available.
6963 */
6964 txn->flags &= ~TX_CK_MASK;
6965 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6966 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6967 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6968 srv = srv->next;
6969 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6970
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6971 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6972 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6973 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6974 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6975 txn->flags |= TX_CK_UNUSED;
6976 else
6977 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6978 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6979
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6980 /* depending on the cookie mode, we may have to either :
6981 * - delete the complete cookie if we're in insert+indirect mode, so that
6982 * the server never sees it ;
6983 * - remove the server id from the cookie value, and tag the cookie as an
6984 * application cookie so that it does not get accidentely removed later,
6985 * if we're in cookie prefix mode
6986 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6987 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6988 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6989
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6990 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6991 val_end += delta;
6992 next += delta;
6993 hdr_end += delta;
6994 hdr_next += delta;
6995 cur_hdr->len += delta;
6996 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6997
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6998 del_from = NULL;
6999 preserve_hdr = 1; /* we want to keep this cookie */
7000 }
7001 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7002 (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]7003 del_from = prev;
7004 }
7005 } else {
7006 /* This is not our cookie, so we must preserve it. But if we already
7007 * scheduled another cookie for removal, we cannot remove the
7008 * complete header, but we can remove the previous block itself.
7009 */
7010 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7011
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7012 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7013 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7014 if (att_beg >= del_from)
7015 att_beg += delta;
7016 if (att_end >= del_from)
7017 att_end += delta;
7018 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7019 val_end += delta;
7020 next += delta;
7021 hdr_end += delta;
7022 hdr_next += delta;
7023 cur_hdr->len += delta;
7024 http_msg_move_end(&txn->req, delta);
7025 prev = del_from;
7026 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7027 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7028 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7029
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7030 /* Look for the appsession cookie unless persistence must be ignored */
7031 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
7032 int cmp_len, value_len;
7033 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7034
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7035 if (t->be->options2 & PR_O2_AS_PFX) {
7036 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7037 value_begin = att_beg + t->be->appsession_name_len;
7038 value_len = val_end - att_beg - t->be->appsession_name_len;
7039 } else {
7040 cmp_len = att_end - att_beg;
7041 value_begin = val_beg;
7042 value_len = val_end - val_beg;
7043 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7044
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7045 /* let's see if the cookie is our appcookie */
7046 if (cmp_len == t->be->appsession_name_len &&
7047 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
7048 manage_client_side_appsession(t, value_begin, value_len);
7049 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7050 }
7051
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7052 /* continue with next cookie on this header line */
7053 att_beg = next;
7054 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7055
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7056 /* There are no more cookies on this line.
7057 * We may still have one (or several) marked for deletion at the
7058 * end of the line. We must do this now in two ways :
7059 * - if some cookies must be preserved, we only delete from the
7060 * mark to the end of line ;
7061 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7062 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7063 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7064 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7065 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7066 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7067 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7068 cur_hdr->len += delta;
7069 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7070 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7071
7072 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7073 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7074 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7075 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7076 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7077 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7078 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7079 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7080 }
7081
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7082 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7083 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7084 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7085}
7086
7087
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7088/* Iterate the same filter through all response headers contained in <rtr>.
7089 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7090 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7091int 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]7092{
7093 char term;
7094 char *cur_ptr, *cur_end, *cur_next;
7095 int cur_idx, old_idx, last_hdr;
7096 struct http_txn *txn = &t->txn;
7097 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7098 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7099
7100 last_hdr = 0;
7101
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7102 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7103 old_idx = 0;
7104
7105 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7106 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7107 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7108 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7109 (exp->action == ACT_ALLOW ||
7110 exp->action == ACT_DENY))
7111 return 0;
7112
7113 cur_idx = txn->hdr_idx.v[old_idx].next;
7114 if (!cur_idx)
7115 break;
7116
7117 cur_hdr = &txn->hdr_idx.v[cur_idx];
7118 cur_ptr = cur_next;
7119 cur_end = cur_ptr + cur_hdr->len;
7120 cur_next = cur_end + cur_hdr->cr + 1;
7121
7122 /* Now we have one header between cur_ptr and cur_end,
7123 * and the next header starts at cur_next.
7124 */
7125
7126 /* The annoying part is that pattern matching needs
7127 * that we modify the contents to null-terminate all
7128 * strings before testing them.
7129 */
7130
7131 term = *cur_end;
7132 *cur_end = '\0';
7133
7134 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7135 switch (exp->action) {
7136 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7137 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7138 last_hdr = 1;
7139 break;
7140
7141 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7142 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7143 last_hdr = 1;
7144 break;
7145
7146 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7147 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7148 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7149 /* FIXME: if the user adds a newline in the replacement, the
7150 * index will not be recalculated for now, and the new line
7151 * will not be counted as a new header.
7152 */
7153
7154 cur_end += delta;
7155 cur_next += delta;
7156 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7157 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7158 break;
7159
7160 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7161 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7162 cur_next += delta;
7163
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7164 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7165 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7166 txn->hdr_idx.used--;
7167 cur_hdr->len = 0;
7168 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7169 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7170 break;
7171
7172 }
7173 }
7174 if (cur_end)
7175 *cur_end = term; /* restore the string terminator */
7176
7177 /* keep the link from this header to next one in case of later
7178 * removal of next header.
7179 */
7180 old_idx = cur_idx;
7181 }
7182 return 0;
7183}
7184
7185
7186/* Apply the filter to the status line in the response buffer <rtr>.
7187 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7188 * or -1 if a replacement resulted in an invalid status line.
7189 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7190int 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]7191{
7192 char term;
7193 char *cur_ptr, *cur_end;
7194 int done;
7195 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7196 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7197
7198
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7199 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7200 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7201 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7202 (exp->action == ACT_ALLOW ||
7203 exp->action == ACT_DENY))
7204 return 0;
7205 else if (exp->action == ACT_REMOVE)
7206 return 0;
7207
7208 done = 0;
7209
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7210 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7211 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7212
7213 /* Now we have the status line between cur_ptr and cur_end */
7214
7215 /* The annoying part is that pattern matching needs
7216 * that we modify the contents to null-terminate all
7217 * strings before testing them.
7218 */
7219
7220 term = *cur_end;
7221 *cur_end = '\0';
7222
7223 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7224 switch (exp->action) {
7225 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7226 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7227 done = 1;
7228 break;
7229
7230 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7231 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7232 done = 1;
7233 break;
7234
7235 case ACT_REPLACE:
7236 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7237 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7238 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7239 /* FIXME: if the user adds a newline in the replacement, the
7240 * index will not be recalculated for now, and the new line
7241 * will not be counted as a new header.
7242 */
7243
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7244 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7245 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7246 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7247 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7248 cur_ptr, cur_end + 1,
7249 NULL, NULL);
7250 if (unlikely(!cur_end))
7251 return -1;
7252
7253 /* we have a full respnse and we know that we have either a CR
7254 * or an LF at <ptr>.
7255 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7256 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]7257 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]7258 /* there is no point trying this regex on headers */
7259 return 1;
7260 }
7261 }
7262 *cur_end = term; /* restore the string terminator */
7263 return done;
7264}
7265
7266
7267
7268/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7269 * 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]7270 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7271 * unparsable response.
7272 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7273int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7274{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7275 struct http_txn *txn = &s->txn;
7276 struct hdr_exp *exp;
7277
7278 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7279 int ret;
7280
7281 /*
7282 * The interleaving of transformations and verdicts
7283 * makes it difficult to decide to continue or stop
7284 * the evaluation.
7285 */
7286
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7287 if (txn->flags & TX_SVDENY)
7288 break;
7289
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7290 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7291 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7292 exp->action == ACT_PASS)) {
7293 exp = exp->next;
7294 continue;
7295 }
7296
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7297 /* if this filter had a condition, evaluate it now and skip to
7298 * next filter if the condition does not match.
7299 */
7300 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7301 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]7302 ret = acl_pass(ret);
7303 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7304 ret = !ret;
7305 if (!ret)
7306 continue;
7307 }
7308
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7309 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7310 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7311 if (unlikely(ret < 0))
7312 return -1;
7313
7314 if (likely(ret == 0)) {
7315 /* The filter did not match the response, it can be
7316 * iterated through all headers.
7317 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7318 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7319 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7320 }
7321 return 0;
7322}
7323
7324
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7325/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7326 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7327 * desirable to call it only when needed. This function is also used when we
7328 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7329 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7330void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7331{
7332 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7333 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7334 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7335 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7336 char *hdr_beg, *hdr_end, *hdr_next;
7337 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7338
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7339 /* Iterate through the headers.
7340 * we start with the start line.
7341 */
7342 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7343 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7344
7345 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7346 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7347 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7348
7349 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7350 hdr_beg = hdr_next;
7351 hdr_end = hdr_beg + cur_hdr->len;
7352 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7353
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7354 /* We have one full header between hdr_beg and hdr_end, and the
7355 * next header starts at hdr_next. We're only interested in
7356 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7357 */
7358
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7359 is_cookie2 = 0;
7360 prev = hdr_beg + 10;
7361 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7362 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7363 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7364 if (!val) {
7365 old_idx = cur_idx;
7366 continue;
7367 }
7368 is_cookie2 = 1;
7369 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7370 }
7371
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7372 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7373 * <prev> points to the colon.
7374 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7375 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7376
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7377 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7378 * check-cache is enabled) and we are not interested in checking
7379 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7380 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7381 if (t->be->cookie_name == NULL &&
7382 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7383 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7384 return;
7385
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7386 /* OK so now we know we have to process this response cookie.
7387 * The format of the Set-Cookie header is slightly different
7388 * from the format of the Cookie header in that it does not
7389 * support the comma as a cookie delimiter (thus the header
7390 * cannot be folded) because the Expires attribute described in
7391 * the original Netscape's spec may contain an unquoted date
7392 * with a comma inside. We have to live with this because
7393 * many browsers don't support Max-Age and some browsers don't
7394 * support quoted strings. However the Set-Cookie2 header is
7395 * clean.
7396 *
7397 * We have to keep multiple pointers in order to support cookie
7398 * removal at the beginning, middle or end of header without
7399 * corrupting the header (in case of set-cookie2). A special
7400 * pointer, <scav> points to the beginning of the set-cookie-av
7401 * fields after the first semi-colon. The <next> pointer points
7402 * either to the end of line (set-cookie) or next unquoted comma
7403 * (set-cookie2). All of these headers are valid :
7404 *
7405 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7406 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7407 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7408 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7409 * | | | | | | | | | |
7410 * | | | | | | | | +-> next hdr_end <--+
7411 * | | | | | | | +------------> scav
7412 * | | | | | | +--------------> val_end
7413 * | | | | | +--------------------> val_beg
7414 * | | | | +----------------------> equal
7415 * | | | +------------------------> att_end
7416 * | | +----------------------------> att_beg
7417 * | +------------------------------> prev
7418 * +-----------------------------------------> hdr_beg
7419 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7420
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7421 for (; prev < hdr_end; prev = next) {
7422 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7423
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7424 /* find att_beg */
7425 att_beg = prev + 1;
7426 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7427 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7428
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7429 /* find att_end : this is the first character after the last non
7430 * space before the equal. It may be equal to hdr_end.
7431 */
7432 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7433
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7434 while (equal < hdr_end) {
7435 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7436 break;
7437 if (http_is_spht[(unsigned char)*equal++])
7438 continue;
7439 att_end = equal;
7440 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7441
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7442 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7443 * is between <att_beg> and <equal>, both may be identical.
7444 */
7445
7446 /* look for end of cookie if there is an equal sign */
7447 if (equal < hdr_end && *equal == '=') {
7448 /* look for the beginning of the value */
7449 val_beg = equal + 1;
7450 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7451 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7452
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7453 /* find the end of the value, respecting quotes */
7454 next = find_cookie_value_end(val_beg, hdr_end);
7455
7456 /* make val_end point to the first white space or delimitor after the value */
7457 val_end = next;
7458 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7459 val_end--;
7460 } else {
7461 /* <equal> points to next comma, semi-colon or EOL */
7462 val_beg = val_end = next = equal;
7463 }
7464
7465 if (next < hdr_end) {
7466 /* Set-Cookie2 supports multiple cookies, and <next> points to
7467 * a colon or semi-colon before the end. So skip all attr-value
7468 * pairs and look for the next comma. For Set-Cookie, since
7469 * commas are permitted in values, skip to the end.
7470 */
7471 if (is_cookie2)
7472 next = find_hdr_value_end(next, hdr_end);
7473 else
7474 next = hdr_end;
7475 }
7476
7477 /* Now everything is as on the diagram above */
7478
7479 /* Ignore cookies with no equal sign */
7480 if (equal == val_end)
7481 continue;
7482
7483 /* If there are spaces around the equal sign, we need to
7484 * strip them otherwise we'll get trouble for cookie captures,
7485 * or even for rewrites. Since this happens extremely rarely,
7486 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7487 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7488 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7489 int stripped_before = 0;
7490 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7491
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7492 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7493 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7494 equal += stripped_before;
7495 val_beg += stripped_before;
7496 }
7497
7498 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7499 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7500 val_beg += stripped_after;
7501 stripped_before += stripped_after;
7502 }
7503
7504 val_end += stripped_before;
7505 next += stripped_before;
7506 hdr_end += stripped_before;
7507 hdr_next += stripped_before;
7508 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7509 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7510 }
7511
7512 /* First, let's see if we want to capture this cookie. We check
7513 * that we don't already have a server side cookie, because we
7514 * can only capture one. Also as an optimisation, we ignore
7515 * cookies shorter than the declared name.
7516 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7517 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7518 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7519 (val_end - att_beg >= t->fe->capture_namelen) &&
7520 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7521 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7522 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7523 Alert("HTTP logging : out of memory.\n");
7524 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7525 else {
7526 if (log_len > t->fe->capture_len)
7527 log_len = t->fe->capture_len;
7528 memcpy(txn->srv_cookie, att_beg, log_len);
7529 txn->srv_cookie[log_len] = 0;
7530 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7531 }
7532
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7533 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7534 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7535 if (!(t->flags & SN_IGNORE_PRST) &&
7536 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7537 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7538 /* assume passive cookie by default */
7539 txn->flags &= ~TX_SCK_MASK;
7540 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7541
7542 /* If the cookie is in insert mode on a known server, we'll delete
7543 * this occurrence because we'll insert another one later.
7544 * 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]7545 * a direct access.
7546 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7547 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7548 /* The "preserve" flag was set, we don't want to touch the
7549 * server's cookie.
7550 */
7551 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7552 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7553 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7554 /* this cookie must be deleted */
7555 if (*prev == ':' && next == hdr_end) {
7556 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7557 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7558 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7559 txn->hdr_idx.used--;
7560 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7561 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7562 hdr_next += delta;
7563 http_msg_move_end(&txn->rsp, delta);
7564 /* note: while both invalid now, <next> and <hdr_end>
7565 * are still equal, so the for() will stop as expected.
7566 */
7567 } else {
7568 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7569 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7570 next = prev;
7571 hdr_end += delta;
7572 hdr_next += delta;
7573 cur_hdr->len += delta;
7574 http_msg_move_end(&txn->rsp, delta);
7575 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7576 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7577 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7578 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7579 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7580 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7581 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7582 * with this server since we know it.
7583 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7584 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7585 next += delta;
7586 hdr_end += delta;
7587 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7588 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7589 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7590
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7591 txn->flags &= ~TX_SCK_MASK;
7592 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7593 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7594 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7595 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7596 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7597 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7598 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7599 next += delta;
7600 hdr_end += delta;
7601 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7602 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7603 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7604
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7605 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7606 txn->flags &= ~TX_SCK_MASK;
7607 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7608 }
7609 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7610 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7611 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7612 int cmp_len, value_len;
7613 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7614
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7615 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7616 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7617 value_begin = att_beg + t->be->appsession_name_len;
7618 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]7619 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7620 cmp_len = att_end - att_beg;
7621 value_begin = val_beg;
7622 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7623 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7624
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7625 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7626 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7627 /* free a possibly previously allocated memory */
7628 pool_free2(apools.sessid, txn->sessid);
7629
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7630 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7631 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7632 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7633 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7634 return;
7635 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7636 memcpy(txn->sessid, value_begin, value_len);
7637 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7638 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7639 }
7640 /* that's done for this cookie, check the next one on the same
7641 * line when next != hdr_end (only if is_cookie2).
7642 */
7643 }
7644 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7645 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7646 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7647
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7648 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7649 appsess *asession = NULL;
7650 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7651 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7652 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7653 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7654 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7655 Alert("Not enough Memory process_srv():asession:calloc().\n");
7656 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7657 return;
7658 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7659 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7660
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7661 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7662 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7663 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]7664 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7665 return;
7666 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7667 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7668 asession->sessid[t->be->appsession_len] = 0;
7669
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7670 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7671 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7672 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7673 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]7674 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7675 return;
7676 }
7677 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7678 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7679
7680 asession->request_count = 0;
7681 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7682 }
7683
7684 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7685 asession->request_count++;
7686 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7687}
7688
7689
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7690/*
7691 * Check if response is cacheable or not. Updates t->flags.
7692 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7693void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7694{
7695 struct http_txn *txn = &t->txn;
7696 char *p1, *p2;
7697
7698 char *cur_ptr, *cur_end, *cur_next;
7699 int cur_idx;
7700
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7701 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7702 return;
7703
7704 /* Iterate through the headers.
7705 * we start with the start line.
7706 */
7707 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7708 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7709
7710 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7711 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7712 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7713
7714 cur_hdr = &txn->hdr_idx.v[cur_idx];
7715 cur_ptr = cur_next;
7716 cur_end = cur_ptr + cur_hdr->len;
7717 cur_next = cur_end + cur_hdr->cr + 1;
7718
7719 /* We have one full header between cur_ptr and cur_end, and the
7720 * next header starts at cur_next. We're only interested in
7721 * "Cookie:" headers.
7722 */
7723
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7724 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7725 if (val) {
7726 if ((cur_end - (cur_ptr + val) >= 8) &&
7727 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7728 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7729 return;
7730 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7731 }
7732
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7733 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7734 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7735 continue;
7736
7737 /* OK, right now we know we have a cache-control header at cur_ptr */
7738
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7739 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7740
7741 if (p1 >= cur_end) /* no more info */
7742 continue;
7743
7744 /* p1 is at the beginning of the value */
7745 p2 = p1;
7746
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7747 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7748 p2++;
7749
7750 /* we have a complete value between p1 and p2 */
7751 if (p2 < cur_end && *p2 == '=') {
7752 /* we have something of the form no-cache="set-cookie" */
7753 if ((cur_end - p1 >= 21) &&
7754 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7755 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7756 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7757 continue;
7758 }
7759
7760 /* OK, so we know that either p2 points to the end of string or to a comma */
7761 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]7762 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7763 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7764 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7765 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7766 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7767 return;
7768 }
7769
7770 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7771 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7772 continue;
7773 }
7774 }
7775}
7776
7777
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7778/*
7779 * Try to retrieve a known appsession in the URI, then the associated server.
7780 * If the server is found, it's assigned to the session.
7781 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7782void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7783{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7784 char *end_params, *first_param, *cur_param, *next_param;
7785 char separator;
7786 int value_len;
7787
7788 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7789
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7790 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7791 (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]7792 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7793 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7794
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7795 first_param = NULL;
7796 switch (mode) {
7797 case PR_O2_AS_M_PP:
7798 first_param = memchr(begin, ';', len);
7799 break;
7800 case PR_O2_AS_M_QS:
7801 first_param = memchr(begin, '?', len);
7802 break;
7803 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7804
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7805 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7806 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7807 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7808
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7809 switch (mode) {
7810 case PR_O2_AS_M_PP:
7811 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7812 end_params = (char *) begin + len;
7813 }
7814 separator = ';';
7815 break;
7816 case PR_O2_AS_M_QS:
7817 end_params = (char *) begin + len;
7818 separator = '&';
7819 break;
7820 default:
7821 /* unknown mode, shouldn't happen */
7822 return;
7823 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7824
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7825 cur_param = next_param = end_params;
7826 while (cur_param > first_param) {
7827 cur_param--;
7828 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7829 /* let's see if this is the appsession parameter */
7830 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7831 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7832 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7833 /* Cool... it's the right one */
7834 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7835 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7836 if (value_len > 0) {
7837 manage_client_side_appsession(t, cur_param, value_len);
7838 }
7839 break;
7840 }
7841 next_param = cur_param;
7842 }
7843 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7844#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7845 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7846 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7847#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7848}
7849
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7850/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7851 * 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]7852 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7853 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7854 * 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]7855 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7856 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7857 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7858 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7859int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7860{
7861 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7862 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7863 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7864
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7865 if (!uri_auth)
7866 return 0;
7867
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7868 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]7869 return 0;
7870
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7871 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7872 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7873 return 0;
7874
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]7875 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7876 return 0;
7877
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7878 return 1;
7879}
7880
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7881/*
7882 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7883 * By default it tries to report the error position as msg->err_pos. However if
7884 * this one is not set, it will then report msg->next, which is the last known
7885 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7886 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7887 */
7888void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7889 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]7890 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7891{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7892 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7893 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7894
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7895 es->len = MIN(chn->buf->i, sizeof(es->buf));
7896 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7897 len1 = MIN(len1, es->len);
7898 len2 = es->len - len1; /* remaining data if buffer wraps */
7899
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7900 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7901 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7902 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7903
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7904 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7905 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7906 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7907 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7908
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7909 es->when = date; // user-visible date
7910 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7911 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7912 es->oe = other_end;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]7913 if (objt_conn(s->req->prod->end))
7914 es->src = __objt_conn(s->req->prod->end)->addr.from;
7915 else
7916 memset(&es->src, 0, sizeof(es->src));
7917
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7918 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7919 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7920 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7921 es->s_flags = s->flags;
7922 es->t_flags = s->txn.flags;
7923 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7924 es->b_out = chn->buf->o;
7925 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7926 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7927 es->m_clen = msg->chunk_len;
7928 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7929}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7930
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7931/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7932 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7933 * performed over the whole headers. Otherwise it must contain a valid header
7934 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7935 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7936 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7937 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7938 * -1. The value fetch stops at commas, so this function is suited for use with
7939 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7940 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7941 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7942unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7943 struct hdr_idx *idx, int occ,
7944 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7945{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7946 struct hdr_ctx local_ctx;
7947 char *ptr_hist[MAX_HDR_HISTORY];
7948 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7949 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7950 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7951
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7952 if (!ctx) {
7953 local_ctx.idx = 0;
7954 ctx = &local_ctx;
7955 }
7956
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7957 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7958 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7959 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7960 occ--;
7961 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7962 *vptr = ctx->line + ctx->val;
7963 *vlen = ctx->vlen;
7964 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7965 }
7966 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7967 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7968 }
7969
7970 /* negative occurrence, we scan all the list then walk back */
7971 if (-occ > MAX_HDR_HISTORY)
7972 return 0;
7973
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7974 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7975 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7976 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7977 len_hist[hist_ptr] = ctx->vlen;
7978 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7979 hist_ptr = 0;
7980 found++;
7981 }
7982 if (-occ > found)
7983 return 0;
7984 /* 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]7985 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
7986 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
7987 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7988 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]7989 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7990 if (hist_ptr >= MAX_HDR_HISTORY)
7991 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7992 *vptr = ptr_hist[hist_ptr];
7993 *vlen = len_hist[hist_ptr];
7994 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7995}
7996
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7997/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7998 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7999 * performed over the whole headers. Otherwise it must contain a valid header
8000 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8001 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8002 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8003 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8004 * -1. This function differs from http_get_hdr() in that it only returns full
8005 * line header values and does not stop at commas.
8006 * The return value is 0 if nothing was found, or non-zero otherwise.
8007 */
8008unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8009 struct hdr_idx *idx, int occ,
8010 struct hdr_ctx *ctx, char **vptr, int *vlen)
8011{
8012 struct hdr_ctx local_ctx;
8013 char *ptr_hist[MAX_HDR_HISTORY];
8014 int len_hist[MAX_HDR_HISTORY];
8015 unsigned int hist_ptr;
8016 int found;
8017
8018 if (!ctx) {
8019 local_ctx.idx = 0;
8020 ctx = &local_ctx;
8021 }
8022
8023 if (occ >= 0) {
8024 /* search from the beginning */
8025 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8026 occ--;
8027 if (occ <= 0) {
8028 *vptr = ctx->line + ctx->val;
8029 *vlen = ctx->vlen;
8030 return 1;
8031 }
8032 }
8033 return 0;
8034 }
8035
8036 /* negative occurrence, we scan all the list then walk back */
8037 if (-occ > MAX_HDR_HISTORY)
8038 return 0;
8039
8040 found = hist_ptr = 0;
8041 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8042 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8043 len_hist[hist_ptr] = ctx->vlen;
8044 if (++hist_ptr >= MAX_HDR_HISTORY)
8045 hist_ptr = 0;
8046 found++;
8047 }
8048 if (-occ > found)
8049 return 0;
8050 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8051 * find occurrence -occ, so we have to check [hist_ptr+occ].
8052 */
8053 hist_ptr += occ;
8054 if (hist_ptr >= MAX_HDR_HISTORY)
8055 hist_ptr -= MAX_HDR_HISTORY;
8056 *vptr = ptr_hist[hist_ptr];
8057 *vlen = len_hist[hist_ptr];
8058 return 1;
8059}
8060
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8061/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8062 * Print a debug line with a header. Always stop at the first CR or LF char,
8063 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8064 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8065 */
8066void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
8067{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8068 int max;
8069 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8070 dir,
8071 objt_conn(t->req->prod->end) ? (unsigned short)objt_conn(t->req->prod->end)->t.sock.fd : -1,
8072 objt_conn(t->req->cons->end) ? (unsigned short)objt_conn(t->req->cons->end)->t.sock.fd : -1);
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8073
8074 for (max = 0; start + max < end; max++)
8075 if (start[max] == '\r' || start[max] == '\n')
8076 break;
8077
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8078 UBOUND(max, trash.size - trash.len - 3);
8079 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8080 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8081 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8082}
8083
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8084/*
8085 * Initialize a new HTTP transaction for session <s>. It is assumed that all
8086 * the required fields are properly allocated and that we only need to (re)init
8087 * them. This should be used before processing any new request.
8088 */
8089void http_init_txn(struct session *s)
8090{
8091 struct http_txn *txn = &s->txn;
8092 struct proxy *fe = s->fe;
8093
8094 txn->flags = 0;
8095 txn->status = -1;
8096
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8097 txn->cookie_first_date = 0;
8098 txn->cookie_last_date = 0;
8099
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8100 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8101 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8102 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8103 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8104 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8105 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8106 txn->req.chunk_len = 0LL;
8107 txn->req.body_len = 0LL;
8108 txn->rsp.chunk_len = 0LL;
8109 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8110 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8111 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8112 txn->req.chn = s->req;
8113 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8114
8115 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8116
8117 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8118 if (fe->options2 & PR_O2_REQBUG_OK)
8119 txn->req.err_pos = -1; /* let buggy requests pass */
8120
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8121 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8122 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8123
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8124 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8125 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8126
8127 if (txn->hdr_idx.v)
8128 hdr_idx_init(&txn->hdr_idx);
8129}
8130
8131/* to be used at the end of a transaction */
8132void http_end_txn(struct session *s)
8133{
8134 struct http_txn *txn = &s->txn;
8135
8136 /* these ones will have been dynamically allocated */
8137 pool_free2(pool2_requri, txn->uri);
8138 pool_free2(pool2_capture, txn->cli_cookie);
8139 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8140 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8141 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8142
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8143 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8144 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8145 txn->uri = NULL;
8146 txn->srv_cookie = NULL;
8147 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8148
8149 if (txn->req.cap) {
8150 struct cap_hdr *h;
8151 for (h = s->fe->req_cap; h; h = h->next)
8152 pool_free2(h->pool, txn->req.cap[h->index]);
8153 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8154 }
8155
8156 if (txn->rsp.cap) {
8157 struct cap_hdr *h;
8158 for (h = s->fe->rsp_cap; h; h = h->next)
8159 pool_free2(h->pool, txn->rsp.cap[h->index]);
8160 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8161 }
8162
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8163}
8164
8165/* to be used at the end of a transaction to prepare a new one */
8166void http_reset_txn(struct session *s)
8167{
8168 http_end_txn(s);
8169 http_init_txn(s);
8170
8171 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8172 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8173 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8174 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8175 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8176 /* re-init store persistence */
8177 s->store_count = 0;
8178
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8179 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8180
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8181 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8182
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8183 /* We must trim any excess data from the response buffer, because we
8184 * may have blocked an invalid response from a server that we don't
8185 * want to accidentely forward once we disable the analysers, nor do
8186 * we want those data to come along with next response. A typical
8187 * example of such data would be from a buggy server responding to
8188 * a HEAD with some data, or sending more than the advertised
8189 * content-length.
8190 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8191 if (unlikely(s->rep->buf->i))
8192 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8193
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8194 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8195 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8196
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8197 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8198 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8199
8200 s->req->rex = TICK_ETERNITY;
8201 s->req->wex = TICK_ETERNITY;
8202 s->req->analyse_exp = TICK_ETERNITY;
8203 s->rep->rex = TICK_ETERNITY;
8204 s->rep->wex = TICK_ETERNITY;
8205 s->rep->analyse_exp = TICK_ETERNITY;
8206}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8207
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8208void free_http_req_rules(struct list *r) {
8209 struct http_req_rule *tr, *pr;
8210
8211 list_for_each_entry_safe(pr, tr, r, list) {
8212 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8213 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8214 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8215
8216 free(pr);
8217 }
8218}
8219
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8220/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8221struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8222{
8223 struct http_req_rule *rule;
8224 int cur_arg;
8225
8226 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8227 if (!rule) {
8228 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8229 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8230 }
8231
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8232 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8233 rule->action = HTTP_REQ_ACT_ALLOW;
8234 cur_arg = 1;
8235 } else if (!strcmp(args[0], "deny")) {
8236 rule->action = HTTP_REQ_ACT_DENY;
8237 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8238 } else if (!strcmp(args[0], "tarpit")) {
8239 rule->action = HTTP_REQ_ACT_TARPIT;
8240 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8241 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8242 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8243 cur_arg = 1;
8244
8245 while(*args[cur_arg]) {
8246 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8247 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8248 cur_arg+=2;
8249 continue;
8250 } else
8251 break;
8252 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8253 } else if (!strcmp(args[0], "set-nice")) {
8254 rule->action = HTTP_REQ_ACT_SET_NICE;
8255 cur_arg = 1;
8256
8257 if (!*args[cur_arg] ||
8258 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8259 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8260 file, linenum, args[0]);
8261 goto out_err;
8262 }
8263 rule->arg.nice = atoi(args[cur_arg]);
8264 if (rule->arg.nice < -1024)
8265 rule->arg.nice = -1024;
8266 else if (rule->arg.nice > 1024)
8267 rule->arg.nice = 1024;
8268 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8269 } else if (!strcmp(args[0], "set-tos")) {
8270#ifdef IP_TOS
8271 char *err;
8272 rule->action = HTTP_REQ_ACT_SET_TOS;
8273 cur_arg = 1;
8274
8275 if (!*args[cur_arg] ||
8276 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8277 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8278 file, linenum, args[0]);
8279 goto out_err;
8280 }
8281
8282 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8283 if (err && *err != '\0') {
8284 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8285 file, linenum, err, args[0]);
8286 goto out_err;
8287 }
8288 cur_arg++;
8289#else
8290 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8291 goto out_err;
8292#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8293 } else if (!strcmp(args[0], "set-mark")) {
8294#ifdef SO_MARK
8295 char *err;
8296 rule->action = HTTP_REQ_ACT_SET_MARK;
8297 cur_arg = 1;
8298
8299 if (!*args[cur_arg] ||
8300 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8301 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8302 file, linenum, args[0]);
8303 goto out_err;
8304 }
8305
8306 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8307 if (err && *err != '\0') {
8308 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8309 file, linenum, err, args[0]);
8310 goto out_err;
8311 }
8312 cur_arg++;
8313 global.last_checks |= LSTCHK_NETADM;
8314#else
8315 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8316 goto out_err;
8317#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8318 } else if (!strcmp(args[0], "set-log-level")) {
8319 rule->action = HTTP_REQ_ACT_SET_LOGL;
8320 cur_arg = 1;
8321
8322 if (!*args[cur_arg] ||
8323 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8324 bad_log_level:
8325 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8326 file, linenum, args[0]);
8327 goto out_err;
8328 }
8329 if (strcmp(args[cur_arg], "silent") == 0)
8330 rule->arg.loglevel = -1;
8331 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8332 goto bad_log_level;
8333 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8334 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8335 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8336 cur_arg = 1;
8337
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8338 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8339 (*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]8340 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8341 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8342 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8343 }
8344
8345 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8346 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8347 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8348
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8349 proxy->conf.args.ctx = ARGC_HRQ;
Willy Tarreau434c57c2013-01-08 01:10:24 +0100[diff] [blame]8350 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8351 (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]8352 cur_arg += 2;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8353 } else if (strcmp(args[0], "redirect") == 0) {
8354 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]8355 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8356
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8357 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]8358 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8359 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8360 goto out_err;
8361 }
8362
8363 /* this redirect rule might already contain a parsed condition which
8364 * we'll pass to the http-request rule.
8365 */
8366 rule->action = HTTP_REQ_ACT_REDIR;
8367 rule->arg.redir = redir;
8368 rule->cond = redir->cond;
8369 redir->cond = NULL;
8370 cur_arg = 2;
8371 return rule;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8372 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8373 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]8374 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8375 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8376 }
8377
8378 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8379 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8380 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8381
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8382 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8383 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
8384 file, linenum, args[0], errmsg);
8385 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8386 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8387 }
8388 rule->cond = cond;
8389 }
8390 else if (*args[cur_arg]) {
8391 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
8392 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8393 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8394 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8395 }
8396
8397 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8398 out_err:
8399 free(rule);
8400 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8401}
8402
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8403/* parse an "http-respose" rule */
8404struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8405{
8406 struct http_res_rule *rule;
8407 int cur_arg;
8408
8409 rule = calloc(1, sizeof(*rule));
8410 if (!rule) {
8411 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
8412 goto out_err;
8413 }
8414
8415 if (!strcmp(args[0], "allow")) {
8416 rule->action = HTTP_RES_ACT_ALLOW;
8417 cur_arg = 1;
8418 } else if (!strcmp(args[0], "deny")) {
8419 rule->action = HTTP_RES_ACT_DENY;
8420 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8421 } else if (!strcmp(args[0], "set-nice")) {
8422 rule->action = HTTP_RES_ACT_SET_NICE;
8423 cur_arg = 1;
8424
8425 if (!*args[cur_arg] ||
8426 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8427 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
8428 file, linenum, args[0]);
8429 goto out_err;
8430 }
8431 rule->arg.nice = atoi(args[cur_arg]);
8432 if (rule->arg.nice < -1024)
8433 rule->arg.nice = -1024;
8434 else if (rule->arg.nice > 1024)
8435 rule->arg.nice = 1024;
8436 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8437 } else if (!strcmp(args[0], "set-tos")) {
8438#ifdef IP_TOS
8439 char *err;
8440 rule->action = HTTP_RES_ACT_SET_TOS;
8441 cur_arg = 1;
8442
8443 if (!*args[cur_arg] ||
8444 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8445 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8446 file, linenum, args[0]);
8447 goto out_err;
8448 }
8449
8450 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8451 if (err && *err != '\0') {
8452 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8453 file, linenum, err, args[0]);
8454 goto out_err;
8455 }
8456 cur_arg++;
8457#else
8458 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8459 goto out_err;
8460#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8461 } else if (!strcmp(args[0], "set-mark")) {
8462#ifdef SO_MARK
8463 char *err;
8464 rule->action = HTTP_RES_ACT_SET_MARK;
8465 cur_arg = 1;
8466
8467 if (!*args[cur_arg] ||
8468 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8469 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8470 file, linenum, args[0]);
8471 goto out_err;
8472 }
8473
8474 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8475 if (err && *err != '\0') {
8476 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8477 file, linenum, err, args[0]);
8478 goto out_err;
8479 }
8480 cur_arg++;
8481 global.last_checks |= LSTCHK_NETADM;
8482#else
8483 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8484 goto out_err;
8485#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8486 } else if (!strcmp(args[0], "set-log-level")) {
8487 rule->action = HTTP_RES_ACT_SET_LOGL;
8488 cur_arg = 1;
8489
8490 if (!*args[cur_arg] ||
8491 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8492 bad_log_level:
8493 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
8494 file, linenum, args[0]);
8495 goto out_err;
8496 }
8497 if (strcmp(args[cur_arg], "silent") == 0)
8498 rule->arg.loglevel = -1;
8499 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
8500 goto bad_log_level;
8501 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8502 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8503 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
8504 cur_arg = 1;
8505
8506 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8507 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
8508 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
8509 file, linenum, args[0]);
8510 goto out_err;
8511 }
8512
8513 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8514 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8515 LIST_INIT(&rule->arg.hdr_add.fmt);
8516
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8517 proxy->conf.args.ctx = ARGC_HRS;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8518 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8519 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR);
8520 cur_arg += 2;
8521 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8522 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]8523 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
8524 goto out_err;
8525 }
8526
8527 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8528 struct acl_cond *cond;
8529 char *errmsg = NULL;
8530
8531 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8532 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
8533 file, linenum, args[0], errmsg);
8534 free(errmsg);
8535 goto out_err;
8536 }
8537 rule->cond = cond;
8538 }
8539 else if (*args[cur_arg]) {
8540 Alert("parsing [%s:%d]: 'http-response %s' expects"
8541 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8542 file, linenum, args[0], args[cur_arg]);
8543 goto out_err;
8544 }
8545
8546 return rule;
8547 out_err:
8548 free(rule);
8549 return NULL;
8550}
8551
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8552/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8553 * with <err> filled with the error message. If <use_fmt> is not null, builds a
8554 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8555 */
8556struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8557 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8558{
8559 struct redirect_rule *rule;
8560 int cur_arg;
8561 int type = REDIRECT_TYPE_NONE;
8562 int code = 302;
8563 const char *destination = NULL;
8564 const char *cookie = NULL;
8565 int cookie_set = 0;
8566 unsigned int flags = REDIRECT_FLAG_NONE;
8567 struct acl_cond *cond = NULL;
8568
8569 cur_arg = 0;
8570 while (*(args[cur_arg])) {
8571 if (strcmp(args[cur_arg], "location") == 0) {
8572 if (!*args[cur_arg + 1])
8573 goto missing_arg;
8574
8575 type = REDIRECT_TYPE_LOCATION;
8576 cur_arg++;
8577 destination = args[cur_arg];
8578 }
8579 else if (strcmp(args[cur_arg], "prefix") == 0) {
8580 if (!*args[cur_arg + 1])
8581 goto missing_arg;
8582
8583 type = REDIRECT_TYPE_PREFIX;
8584 cur_arg++;
8585 destination = args[cur_arg];
8586 }
8587 else if (strcmp(args[cur_arg], "scheme") == 0) {
8588 if (!*args[cur_arg + 1])
8589 goto missing_arg;
8590
8591 type = REDIRECT_TYPE_SCHEME;
8592 cur_arg++;
8593 destination = args[cur_arg];
8594 }
8595 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
8596 if (!*args[cur_arg + 1])
8597 goto missing_arg;
8598
8599 cur_arg++;
8600 cookie = args[cur_arg];
8601 cookie_set = 1;
8602 }
8603 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
8604 if (!*args[cur_arg + 1])
8605 goto missing_arg;
8606
8607 cur_arg++;
8608 cookie = args[cur_arg];
8609 cookie_set = 0;
8610 }
8611 else if (strcmp(args[cur_arg], "code") == 0) {
8612 if (!*args[cur_arg + 1])
8613 goto missing_arg;
8614
8615 cur_arg++;
8616 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8617 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8618 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8619 "'%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]8620 args[cur_arg - 1], args[cur_arg]);
8621 return NULL;
8622 }
8623 }
8624 else if (!strcmp(args[cur_arg],"drop-query")) {
8625 flags |= REDIRECT_FLAG_DROP_QS;
8626 }
8627 else if (!strcmp(args[cur_arg],"append-slash")) {
8628 flags |= REDIRECT_FLAG_APPEND_SLASH;
8629 }
8630 else if (strcmp(args[cur_arg], "if") == 0 ||
8631 strcmp(args[cur_arg], "unless") == 0) {
8632 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
8633 if (!cond) {
8634 memprintf(errmsg, "error in condition: %s", *errmsg);
8635 return NULL;
8636 }
8637 break;
8638 }
8639 else {
8640 memprintf(errmsg,
8641 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
8642 args[cur_arg]);
8643 return NULL;
8644 }
8645 cur_arg++;
8646 }
8647
8648 if (type == REDIRECT_TYPE_NONE) {
8649 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
8650 return NULL;
8651 }
8652
8653 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
8654 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]8655 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8656
8657 if (!use_fmt) {
8658 /* old-style static redirect rule */
8659 rule->rdr_str = strdup(destination);
8660 rule->rdr_len = strlen(destination);
8661 }
8662 else {
8663 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8664
8665 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
8666 * if prefix == "/", we don't want to add anything, otherwise it
8667 * makes it hard for the user to configure a self-redirection.
8668 */
8669 proxy->conf.args.ctx = ARGC_RDR;
8670 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
8671 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, 0,
8672 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR);
8673 }
8674 }
8675
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8676 if (cookie) {
8677 /* depending on cookie_set, either we want to set the cookie, or to clear it.
8678 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
8679 */
8680 rule->cookie_len = strlen(cookie);
8681 if (cookie_set) {
8682 rule->cookie_str = malloc(rule->cookie_len + 10);
8683 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8684 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
8685 rule->cookie_len += 9;
8686 } else {
8687 rule->cookie_str = malloc(rule->cookie_len + 21);
8688 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8689 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
8690 rule->cookie_len += 20;
8691 }
8692 }
8693 rule->type = type;
8694 rule->code = code;
8695 rule->flags = flags;
8696 LIST_INIT(&rule->list);
8697 return rule;
8698
8699 missing_arg:
8700 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
8701 return NULL;
8702}
8703
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8704/************************************************************************/
8705/* The code below is dedicated to ACL parsing and matching */
8706/************************************************************************/
8707
8708
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8709/* This function ensures that the prerequisites for an L7 fetch are ready,
8710 * which means that a request or response is ready. If some data is missing,
8711 * 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]8712 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
8713 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8714 *
8715 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8716 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
8717 * decide whether or not an HTTP message is present ;
8718 * 0 if the requested data cannot be fetched or if it is certain that
8719 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8720 * 1 if an HTTP message is ready
8721 */
8722static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8723smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8724 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8725{
8726 struct http_txn *txn = l7;
8727 struct http_msg *msg = &txn->req;
8728
8729 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8730 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8731 */
8732
8733 if (unlikely(!s || !txn))
8734 return 0;
8735
8736 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8737 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8738
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8739 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8740 if (unlikely(!s->req))
8741 return 0;
8742
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8743 /* If the buffer does not leave enough free space at the end,
8744 * we must first realign it.
8745 */
8746 if (s->req->buf->p > s->req->buf->data &&
8747 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
8748 buffer_slow_realign(s->req->buf);
8749
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8750 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]8751 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8752 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8753
8754 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8755 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8756 http_msg_analyzer(msg, &txn->hdr_idx);
8757
8758 /* Still no valid request ? */
8759 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8760 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8761 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8762 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8763 }
8764 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8765 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8766 return 0;
8767 }
8768
8769 /* OK we just got a valid HTTP request. We have some minor
8770 * preparation to perform so that further checks can rely
8771 * on HTTP tests.
8772 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8773
8774 /* If the request was parsed but was too large, we must absolutely
8775 * return an error so that it is not processed. At the moment this
8776 * cannot happen, but if the parsers are to change in the future,
8777 * we want this check to be maintained.
8778 */
8779 if (unlikely(s->req->buf->i + s->req->buf->p >
8780 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
8781 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8782 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8783 return 1;
8784 }
8785
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8786 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8787 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
8788 s->flags |= SN_REDIRECTABLE;
8789
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8790 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
8791 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8792 }
8793
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8794 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8795 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8796 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8797
8798 /* otherwise everything's ready for the request */
8799 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8800 else {
8801 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8802 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
8803 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8804 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8805 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8806 }
8807
8808 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8809 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8810 return 1;
8811}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8812
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8813#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8814 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]8815
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8816#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8817 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]8818
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8819
8820/* 1. Check on METHOD
8821 * We use the pre-parsed method if it is known, and store its number as an
8822 * integer. If it is unknown, we use the pointer and the length.
8823 */
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]8824static int pat_parse_meth(const char **text, struct pattern *pattern, enum pat_usage usage, int *opaque, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8825{
8826 int len, meth;
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]8827 struct chunk *trash;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8828
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8829 len = strlen(*text);
8830 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8831
8832 pattern->val.i = meth;
8833 if (meth == HTTP_METH_OTHER) {
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]8834 if (usage == PAT_U_COMPILE) {
8835 pattern->ptr.str = strdup(*text);
8836 if (!pattern->ptr.str) {
8837 memprintf(err, "out of memory while loading pattern");
8838 return 0;
8839 }
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8840 }
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]8841 else {
8842 trash = get_trash_chunk();
8843 if (trash->size < len) {
8844 memprintf(err, "no space avalaible in the buffer. expect %d, provides %d",
8845 len, trash->size);
8846 return 0;
8847 }
8848 pattern->ptr.str = trash->str;
8849 }
8850 pattern->expect_type = SMP_T_CSTR;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8851 pattern->len = len;
8852 }
Thierry FOURNIERcc0e0b32013-12-06 16:56:40 +0100[diff] [blame]8853 else
8854 pattern->expect_type = SMP_T_UINT;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8855 return 1;
8856}
8857
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8858/* This function fetches the method of current HTTP request and stores
8859 * it in the global pattern struct as a chunk. There are two possibilities :
8860 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8861 * in <len> and <ptr> is NULL ;
8862 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8863 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8864 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8865 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8866static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8867smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8868 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8869{
8870 int meth;
8871 struct http_txn *txn = l7;
8872
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8873 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8874
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8875 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8876 smp->type = SMP_T_UINT;
8877 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8878 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8879 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8880 /* ensure the indexes are not affected */
8881 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8882 smp->type = SMP_T_CSTR;
8883 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8884 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8885 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8886 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8887 return 1;
8888}
8889
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8890/* See above how the method is stored in the global pattern */
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]8891static enum pat_match_res pat_match_meth(struct sample *smp, struct pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8892{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8893 int icase;
8894
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8895
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8896 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8897 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8898 if (smp->data.uint == pattern->val.i)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8899 return PAT_MATCH;
8900 return PAT_NOMATCH;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8901 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8902
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8903 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8904 if (pattern->val.i != HTTP_METH_OTHER)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8905 return PAT_NOMATCH;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8906
8907 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8908 if (pattern->len != smp->data.str.len)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8909 return PAT_NOMATCH;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8910
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8911 icase = pattern->flags & PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8912 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8913 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8914 return PAT_NOMATCH;
8915 return PAT_MATCH;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8916}
8917
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8918static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8919smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8920 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8921{
8922 struct http_txn *txn = l7;
8923 char *ptr;
8924 int len;
8925
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8926 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8927
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8928 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8929 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8930
8931 while ((len-- > 0) && (*ptr++ != '/'));
8932 if (len <= 0)
8933 return 0;
8934
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8935 smp->type = SMP_T_CSTR;
8936 smp->data.str.str = ptr;
8937 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8938
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8939 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8940 return 1;
8941}
8942
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8943static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8944smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8945 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8946{
8947 struct http_txn *txn = l7;
8948 char *ptr;
8949 int len;
8950
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8951 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8952
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8953 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8954 return 0;
8955
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8956 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8957 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8958
8959 while ((len-- > 0) && (*ptr++ != '/'));
8960 if (len <= 0)
8961 return 0;
8962
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8963 smp->type = SMP_T_CSTR;
8964 smp->data.str.str = ptr;
8965 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8966
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8967 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8968 return 1;
8969}
8970
8971/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8972static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8973smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8974 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8975{
8976 struct http_txn *txn = l7;
8977 char *ptr;
8978 int len;
8979
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8980 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8981
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8982 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8983 return 0;
8984
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8985 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8986 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8987
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8988 smp->type = SMP_T_UINT;
8989 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8990 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8991 return 1;
8992}
8993
8994/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8995static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8996smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8997 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8998{
8999 struct http_txn *txn = l7;
9000
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9001 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9002
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9003 smp->type = SMP_T_CSTR;
9004 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9005 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9006 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9007 return 1;
9008}
9009
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9010static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9011smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9012 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9013{
9014 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9015 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9016
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9017 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9018
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9019 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr);
9020 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]9021 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9022
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9023 smp->type = SMP_T_IPV4;
9024 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9025 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9026 return 1;
9027}
9028
9029static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9030smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9031 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9032{
9033 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9034 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9035
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9036 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9037
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9038 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr);
9039 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
9040 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9041
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9042 smp->type = SMP_T_UINT;
9043 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]9044 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9045 return 1;
9046}
9047
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9048/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9049 * Accepts an optional argument of type string containing the header field name,
9050 * and an optional argument of type signed or unsigned integer to request an
9051 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9052 * headers are considered from the first one. It does not stop on commas and
9053 * returns full lines instead (useful for User-Agent or Date for example).
9054 */
9055static int
9056smp_fetch_fhdr(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 Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9058{
9059 struct http_txn *txn = l7;
9060 struct hdr_idx *idx = &txn->hdr_idx;
9061 struct hdr_ctx *ctx = smp->ctx.a[0];
9062 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9063 int occ = 0;
9064 const char *name_str = NULL;
9065 int name_len = 0;
9066
9067 if (!ctx) {
9068 /* first call */
9069 ctx = &static_hdr_ctx;
9070 ctx->idx = 0;
9071 smp->ctx.a[0] = ctx;
9072 }
9073
9074 if (args) {
9075 if (args[0].type != ARGT_STR)
9076 return 0;
9077 name_str = args[0].data.str.str;
9078 name_len = args[0].data.str.len;
9079
9080 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9081 occ = args[1].data.uint;
9082 }
9083
9084 CHECK_HTTP_MESSAGE_FIRST();
9085
9086 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
9087 /* search for header from the beginning */
9088 ctx->idx = 0;
9089
9090 if (!occ && !(opt & SMP_OPT_ITERATE))
9091 /* no explicit occurrence and single fetch => last header by default */
9092 occ = -1;
9093
9094 if (!occ)
9095 /* prepare to report multiple occurrences for ACL fetches */
9096 smp->flags |= SMP_F_NOT_LAST;
9097
9098 smp->type = SMP_T_CSTR;
9099 smp->flags |= SMP_F_VOL_HDR;
9100 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
9101 return 1;
9102
9103 smp->flags &= ~SMP_F_NOT_LAST;
9104 return 0;
9105}
9106
9107/* 6. Check on HTTP header count. The number of occurrences is returned.
9108 * Accepts exactly 1 argument of type string. It does not stop on commas and
9109 * returns full lines instead (useful for User-Agent or Date for example).
9110 */
9111static int
9112smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9113 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9114{
9115 struct http_txn *txn = l7;
9116 struct hdr_idx *idx = &txn->hdr_idx;
9117 struct hdr_ctx ctx;
9118 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9119 int cnt;
9120
9121 if (!args || args->type != ARGT_STR)
9122 return 0;
9123
9124 CHECK_HTTP_MESSAGE_FIRST();
9125
9126 ctx.idx = 0;
9127 cnt = 0;
9128 while (http_find_full_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
9129 cnt++;
9130
9131 smp->type = SMP_T_UINT;
9132 smp->data.uint = cnt;
9133 smp->flags = SMP_F_VOL_HDR;
9134 return 1;
9135}
9136
9137/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9138 * Accepts an optional argument of type string containing the header field name,
9139 * and an optional argument of type signed or unsigned integer to request an
9140 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9141 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9142 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9143static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9144smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9145 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9146{
9147 struct http_txn *txn = l7;
9148 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9149 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9150 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]9151 int occ = 0;
9152 const char *name_str = NULL;
9153 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9154
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9155 if (!ctx) {
9156 /* first call */
9157 ctx = &static_hdr_ctx;
9158 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]9159 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9160 }
9161
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9162 if (args) {
9163 if (args[0].type != ARGT_STR)
9164 return 0;
9165 name_str = args[0].data.str.str;
9166 name_len = args[0].data.str.len;
9167
9168 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9169 occ = args[1].data.uint;
9170 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9171
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9172 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9173
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9174 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9175 /* search for header from the beginning */
9176 ctx->idx = 0;
9177
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9178 if (!occ && !(opt & SMP_OPT_ITERATE))
9179 /* no explicit occurrence and single fetch => last header by default */
9180 occ = -1;
9181
9182 if (!occ)
9183 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9184 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]9185
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9186 smp->type = SMP_T_CSTR;
9187 smp->flags |= SMP_F_VOL_HDR;
9188 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]9189 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9190
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9191 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9192 return 0;
9193}
9194
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9195/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9196 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9197 */
9198static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9199smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9200 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9201{
9202 struct http_txn *txn = l7;
9203 struct hdr_idx *idx = &txn->hdr_idx;
9204 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9205 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]9206 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9207
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9208 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9209 return 0;
9210
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9211 CHECK_HTTP_MESSAGE_FIRST();
9212
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9213 ctx.idx = 0;
9214 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9215 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]9216 cnt++;
9217
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9218 smp->type = SMP_T_UINT;
9219 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9220 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9221 return 1;
9222}
9223
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9224/* Fetch an HTTP header's integer value. The integer value is returned. It
9225 * takes a mandatory argument of type string and an optional one of type int
9226 * to designate a specific occurrence. It returns an unsigned integer, which
9227 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9228 */
9229static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9230smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9231 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9232{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9233 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9234
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9235 if (ret > 0) {
9236 smp->type = SMP_T_UINT;
9237 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9238 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9239
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9240 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9241}
9242
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9243/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
9244 * and an optional one of type int to designate a specific occurrence.
9245 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9246 */
9247static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9248smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9249 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9250{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9251 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9252
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9253 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9254 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
9255 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9256 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9257 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9258 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9259 if (smp->data.str.len < temp->size - 1) {
9260 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
9261 temp->str[smp->data.str.len] = '\0';
9262 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
9263 smp->type = SMP_T_IPV6;
9264 break;
9265 }
9266 }
9267 }
9268
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9269 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9270 if (!(smp->flags & SMP_F_NOT_LAST))
9271 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9272 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9273 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9274}
9275
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9276/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
9277 * the first '/' after the possible hostname, and ends before the possible '?'.
9278 */
9279static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9280smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9281 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9282{
9283 struct http_txn *txn = l7;
9284 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9285
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9286 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9287
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9288 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]9289 ptr = http_get_path(txn);
9290 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9291 return 0;
9292
9293 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9294 smp->type = SMP_T_CSTR;
9295 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9296
9297 while (ptr < end && *ptr != '?')
9298 ptr++;
9299
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9300 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9301 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9302 return 1;
9303}
9304
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9305/* This produces a concatenation of the first occurrence of the Host header
9306 * followed by the path component if it begins with a slash ('/'). This means
9307 * that '*' will not be added, resulting in exactly the first Host entry.
9308 * If no Host header is found, then the path is returned as-is. The returned
9309 * value is stored in the trash so it does not need to be marked constant.
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]9310 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9311 */
9312static int
9313smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9314 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9315{
9316 struct http_txn *txn = l7;
9317 char *ptr, *end, *beg;
9318 struct hdr_ctx ctx;
9319
9320 CHECK_HTTP_MESSAGE_FIRST();
9321
9322 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9323 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]9324 !ctx.vlen)
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9325 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9326
9327 /* 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]9328 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9329 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]9330 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9331 smp->data.str.len = ctx.vlen;
9332
9333 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9334 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]9335 beg = http_get_path(txn);
9336 if (!beg)
9337 beg = end;
9338
9339 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9340
9341 if (beg < ptr && *beg == '/') {
9342 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
9343 smp->data.str.len += ptr - beg;
9344 }
9345
9346 smp->flags = SMP_F_VOL_1ST;
9347 return 1;
9348}
9349
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9350/* This produces a 32-bit hash of the concatenation of the first occurrence of
9351 * the Host header followed by the path component if it begins with a slash ('/').
9352 * This means that '*' will not be added, resulting in exactly the first Host
9353 * 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]9354 * is hashed using the path hash followed by a full avalanche hash and provides a
9355 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9356 * high-traffic sites without having to store whole paths.
9357 */
9358static int
9359smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9360 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9361{
9362 struct http_txn *txn = l7;
9363 struct hdr_ctx ctx;
9364 unsigned int hash = 0;
9365 char *ptr, *beg, *end;
9366 int len;
9367
9368 CHECK_HTTP_MESSAGE_FIRST();
9369
9370 ctx.idx = 0;
9371 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
9372 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
9373 ptr = ctx.line + ctx.val;
9374 len = ctx.vlen;
9375 while (len--)
9376 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
9377 }
9378
9379 /* now retrieve the path */
9380 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
9381 beg = http_get_path(txn);
9382 if (!beg)
9383 beg = end;
9384
9385 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9386
9387 if (beg < ptr && *beg == '/') {
9388 while (beg < ptr)
9389 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
9390 }
9391 hash = full_hash(hash);
9392
9393 smp->type = SMP_T_UINT;
9394 smp->data.uint = hash;
9395 smp->flags = SMP_F_VOL_1ST;
9396 return 1;
9397}
9398
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9399/* 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]9400 * path as returned by smp_fetch_base32(). The idea is to have per-source and
9401 * per-path counters. The result is a binary block from 8 to 20 bytes depending
9402 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9403 * that in environments where IPv6 is insignificant, truncating the output to
9404 * 8 bytes would still work.
9405 */
9406static int
9407smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9408 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9409{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9410 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9411 struct connection *cli_conn = objt_conn(l4->si[0].end);
9412
9413 if (!cli_conn)
9414 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9415
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9416 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9417 return 0;
9418
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9419 temp = get_trash_chunk();
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9420 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
9421 temp->len += sizeof(smp->data.uint);
9422
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9423 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9424 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9425 memcpy(temp->str + temp->len, &((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr, 4);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9426 temp->len += 4;
9427 break;
9428 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9429 memcpy(temp->str + temp->len, &((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_addr, 16);
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9430 temp->len += 16;
9431 break;
9432 default:
9433 return 0;
9434 }
9435
9436 smp->data.str = *temp;
9437 smp->type = SMP_T_BIN;
9438 return 1;
9439}
9440
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9441static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9442smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9443 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9444{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9445 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9446 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9447 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9448
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9449 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9450
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9451 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9452 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9453 return 1;
9454}
9455
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9456/* return a valid test if the current request is the first one on the connection */
9457static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9458smp_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]9459 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9460{
9461 if (!s)
9462 return 0;
9463
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9464 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9465 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9466 return 1;
9467}
9468
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9469/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9470static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9471smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9472 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9473{
9474
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9475 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9476 return 0;
9477
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9478 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9479
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9480 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9481 return 0;
9482
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9483 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9484 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]9485 return 1;
9486}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9487
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9488/* Accepts exactly 1 argument of type userlist */
9489static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9490smp_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]9491 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9492{
9493
9494 if (!args || args->type != ARGT_USR)
9495 return 0;
9496
9497 CHECK_HTTP_MESSAGE_FIRST();
9498
9499 if (!get_http_auth(l4))
9500 return 0;
9501
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9502 /* pat_match_auth() will need several information at once */
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9503 smp->ctx.a[0] = args->data.usr; /* user list */
9504 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
9505 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
9506
9507 /* if the user does not belong to the userlist or has a wrong password,
9508 * report that it unconditionally does not match. Otherwise we return
9509 * a non-zero integer which will be ignored anyway since all the params
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9510 * that pat_match_auth() will use are in test->ctx.a[0,1,2].
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9511 */
9512 smp->type = SMP_T_BOOL;
9513 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
9514 if (smp->data.uint)
9515 smp->type = SMP_T_UINT;
9516
9517 return 1;
9518}
9519
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9520/* Try to find the next occurrence of a cookie name in a cookie header value.
9521 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
9522 * the cookie value is returned into *value and *value_l, and the function
9523 * returns a pointer to the next pointer to search from if the value was found.
9524 * Otherwise if the cookie was not found, NULL is returned and neither value
9525 * nor value_l are touched. The input <hdr> string should first point to the
9526 * header's value, and the <hdr_end> pointer must point to the first character
9527 * not part of the value. <list> must be non-zero if value may represent a list
9528 * of values (cookie headers). This makes it faster to abort parsing when no
9529 * list is expected.
9530 */
9531static char *
9532extract_cookie_value(char *hdr, const char *hdr_end,
9533 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]9534 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9535{
9536 char *equal, *att_end, *att_beg, *val_beg, *val_end;
9537 char *next;
9538
9539 /* we search at least a cookie name followed by an equal, and more
9540 * generally something like this :
9541 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
9542 */
9543 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
9544 /* Iterate through all cookies on this line */
9545
9546 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
9547 att_beg++;
9548
9549 /* find att_end : this is the first character after the last non
9550 * space before the equal. It may be equal to hdr_end.
9551 */
9552 equal = att_end = att_beg;
9553
9554 while (equal < hdr_end) {
9555 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
9556 break;
9557 if (http_is_spht[(unsigned char)*equal++])
9558 continue;
9559 att_end = equal;
9560 }
9561
9562 /* here, <equal> points to '=', a delimitor or the end. <att_end>
9563 * is between <att_beg> and <equal>, both may be identical.
9564 */
9565
9566 /* look for end of cookie if there is an equal sign */
9567 if (equal < hdr_end && *equal == '=') {
9568 /* look for the beginning of the value */
9569 val_beg = equal + 1;
9570 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
9571 val_beg++;
9572
9573 /* find the end of the value, respecting quotes */
9574 next = find_cookie_value_end(val_beg, hdr_end);
9575
9576 /* make val_end point to the first white space or delimitor after the value */
9577 val_end = next;
9578 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
9579 val_end--;
9580 } else {
9581 val_beg = val_end = next = equal;
9582 }
9583
9584 /* We have nothing to do with attributes beginning with '$'. However,
9585 * they will automatically be removed if a header before them is removed,
9586 * since they're supposed to be linked together.
9587 */
9588 if (*att_beg == '$')
9589 continue;
9590
9591 /* Ignore cookies with no equal sign */
9592 if (equal == next)
9593 continue;
9594
9595 /* Now we have the cookie name between att_beg and att_end, and
9596 * its value between val_beg and val_end.
9597 */
9598
9599 if (att_end - att_beg == cookie_name_l &&
9600 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
9601 /* let's return this value and indicate where to go on from */
9602 *value = val_beg;
9603 *value_l = val_end - val_beg;
9604 return next + 1;
9605 }
9606
9607 /* Set-Cookie headers only have the name in the first attr=value part */
9608 if (!list)
9609 break;
9610 }
9611
9612 return NULL;
9613}
9614
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9615/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9616 * 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]9617 * 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]9618 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9619 * 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]9620 * Accepts exactly 1 argument of type string. If the input options indicate
9621 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]9622 * The returned sample is of type CSTR.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9623 */
9624static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9625smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9626 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9627{
9628 struct http_txn *txn = l7;
9629 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9630 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9631 const struct http_msg *msg;
9632 const char *hdr_name;
9633 int hdr_name_len;
9634 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9635 int occ = 0;
9636 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9637
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9638 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9639 return 0;
9640
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9641 if (!ctx) {
9642 /* first call */
9643 ctx = &static_hdr_ctx;
9644 ctx->idx = 0;
9645 smp->ctx.a[2] = ctx;
9646 }
9647
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9648 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9649
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9650 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9651 msg = &txn->req;
9652 hdr_name = "Cookie";
9653 hdr_name_len = 6;
9654 } else {
9655 msg = &txn->rsp;
9656 hdr_name = "Set-Cookie";
9657 hdr_name_len = 10;
9658 }
9659
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9660 if (!occ && !(opt & SMP_OPT_ITERATE))
9661 /* no explicit occurrence and single fetch => last cookie by default */
9662 occ = -1;
9663
9664 /* OK so basically here, either we want only one value and it's the
9665 * last one, or we want to iterate over all of them and we fetch the
9666 * next one.
9667 */
9668
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9669 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9670 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9671 /* search for the header from the beginning, we must first initialize
9672 * the search parameters.
9673 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9674 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9675 ctx->idx = 0;
9676 }
9677
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9678 smp->flags |= SMP_F_VOL_HDR;
9679
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9680 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9681 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
9682 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9683 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
9684 goto out;
9685
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9686 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9687 continue;
9688
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9689 smp->ctx.a[0] = ctx->line + ctx->val;
9690 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9691 }
9692
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9693 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9694 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]9695 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9696 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9697 &smp->data.str.str,
9698 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9699 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9700 found = 1;
9701 if (occ >= 0) {
9702 /* one value was returned into smp->data.str.{str,len} */
9703 smp->flags |= SMP_F_NOT_LAST;
9704 return 1;
9705 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9706 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9707 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9708 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9709 /* all cookie headers and values were scanned. If we're looking for the
9710 * last occurrence, we may return it now.
9711 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9712 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9713 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9714 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9715}
9716
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9717/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9718 * match the name in args and args->data.str.len. If <multi> is non-null, then
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]9719 * multiple cookies may be parsed on the same line. The returned sample is of
9720 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9721 */
9722static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9723smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9724 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9725{
9726 struct http_txn *txn = l7;
9727 struct hdr_idx *idx = &txn->hdr_idx;
9728 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9729 const struct http_msg *msg;
9730 const char *hdr_name;
9731 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9732 int cnt;
9733 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9734 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9735
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9736 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9737 return 0;
9738
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9739 CHECK_HTTP_MESSAGE_FIRST();
9740
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9741 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9742 msg = &txn->req;
9743 hdr_name = "Cookie";
9744 hdr_name_len = 6;
9745 } else {
9746 msg = &txn->rsp;
9747 hdr_name = "Set-Cookie";
9748 hdr_name_len = 10;
9749 }
9750
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9751 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]9752 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9753 ctx.idx = 0;
9754 cnt = 0;
9755
9756 while (1) {
9757 /* Note: val_beg == NULL every time we need to fetch a new header */
9758 if (!val_beg) {
9759 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
9760 break;
9761
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9762 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9763 continue;
9764
9765 val_beg = ctx.line + ctx.val;
9766 val_end = val_beg + ctx.vlen;
9767 }
9768
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9769 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9770 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9771 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9772 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9773 &smp->data.str.str,
9774 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9775 cnt++;
9776 }
9777 }
9778
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]9779 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9780 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9781 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9782 return 1;
9783}
9784
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9785/* Fetch an cookie's integer value. The integer value is returned. It
9786 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
9787 */
9788static int
9789smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9790 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9791{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9792 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9793
9794 if (ret > 0) {
9795 smp->type = SMP_T_UINT;
9796 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9797 }
9798
9799 return ret;
9800}
9801
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9802/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9803/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9804/************************************************************************/
9805
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9806/*
9807 * Given a path string and its length, find the position of beginning of the
9808 * query string. Returns NULL if no query string is found in the path.
9809 *
9810 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
9811 *
9812 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
9813 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9814static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9815{
9816 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]9817
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9818 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9819 return p ? p + 1 : NULL;
9820}
9821
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9822static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9823{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9824 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9825}
9826
9827/*
9828 * Given a url parameter, find the starting position of the first occurence,
9829 * or NULL if the parameter is not found.
9830 *
9831 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
9832 * the function will return query_string+8.
9833 */
9834static char*
9835find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9836 char* url_param_name, size_t url_param_name_l,
9837 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9838{
9839 char *pos, *last;
9840
9841 pos = query_string;
9842 last = query_string + query_string_l - url_param_name_l - 1;
9843
9844 while (pos <= last) {
9845 if (pos[url_param_name_l] == '=') {
9846 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
9847 return pos;
9848 pos += url_param_name_l + 1;
9849 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9850 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9851 pos++;
9852 pos++;
9853 }
9854 return NULL;
9855}
9856
9857/*
9858 * Given a url parameter name, returns its value and size into *value and
9859 * *value_l respectively, and returns non-zero. If the parameter is not found,
9860 * zero is returned and value/value_l are not touched.
9861 */
9862static int
9863find_url_param_value(char* path, size_t path_l,
9864 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9865 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9866{
9867 char *query_string, *qs_end;
9868 char *arg_start;
9869 char *value_start, *value_end;
9870
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9871 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9872 if (!query_string)
9873 return 0;
9874
9875 qs_end = path + path_l;
9876 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9877 url_param_name, url_param_name_l,
9878 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9879 if (!arg_start)
9880 return 0;
9881
9882 value_start = arg_start + url_param_name_l + 1;
9883 value_end = value_start;
9884
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9885 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9886 value_end++;
9887
9888 *value = value_start;
9889 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]9890 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9891}
9892
9893static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9894smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9895 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9896{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9897 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9898 struct http_txn *txn = l7;
9899 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9900
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9901 if (!args || args[0].type != ARGT_STR ||
9902 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9903 return 0;
9904
9905 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9906
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9907 if (args[1].type)
9908 delim = *args[1].data.str.str;
9909
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9910 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]9911 args->data.str.str, args->data.str.len,
9912 &smp->data.str.str, &smp->data.str.len,
9913 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9914 return 0;
9915
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]9916 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9917 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9918 return 1;
9919}
9920
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9921/* Return the signed integer value for the specified url parameter (see url_param
9922 * above).
9923 */
9924static int
9925smp_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]9926 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9927{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9928 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9929
9930 if (ret > 0) {
9931 smp->type = SMP_T_UINT;
9932 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9933 }
9934
9935 return ret;
9936}
9937
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9938/* This produces a 32-bit hash of the concatenation of the first occurrence of
9939 * the Host header followed by the path component if it begins with a slash ('/').
9940 * This means that '*' will not be added, resulting in exactly the first Host
9941 * entry. If no Host header is found, then the path is used. The resulting value
9942 * is hashed using the url hash followed by a full avalanche hash and provides a
9943 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
9944 * high-traffic sites without having to store whole paths.
9945 * this differs from the base32 functions in that it includes the url parameters
9946 * as well as the path
9947 */
9948static int
9949smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]9950 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9951{
9952 struct http_txn *txn = l7;
9953 struct hdr_ctx ctx;
9954 unsigned int hash = 0;
9955 char *ptr, *beg, *end;
9956 int len;
9957
9958 CHECK_HTTP_MESSAGE_FIRST();
9959
9960 ctx.idx = 0;
9961 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
9962 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
9963 ptr = ctx.line + ctx.val;
9964 len = ctx.vlen;
9965 while (len--)
9966 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
9967 }
9968
9969 /* now retrieve the path */
9970 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
9971 beg = http_get_path(txn);
9972 if (!beg)
9973 beg = end;
9974
9975 for (ptr = beg; ptr < end ; ptr++);
9976
9977 if (beg < ptr && *beg == '/') {
9978 while (beg < ptr)
9979 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
9980 }
9981 hash = full_hash(hash);
9982
9983 smp->type = SMP_T_UINT;
9984 smp->data.uint = hash;
9985 smp->flags = SMP_F_VOL_1ST;
9986 return 1;
9987}
9988
9989/* This concatenates the source address with the 32-bit hash of the Host and
9990 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
9991 * per-url counters. The result is a binary block from 8 to 20 bytes depending
9992 * on the source address length. The URL hash is stored before the address so
9993 * that in environments where IPv6 is insignificant, truncating the output to
9994 * 8 bytes would still work.
9995 */
9996static int
9997smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]9998 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9999{
10000 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10001 struct connection *cli_conn = objt_conn(l4->si[0].end);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10002
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]10003 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10004 return 0;
10005
10006 temp = get_trash_chunk();
10007 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
10008 temp->len += sizeof(smp->data.uint);
10009
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10010 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10011 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10012 memcpy(temp->str + temp->len, &((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr, 4);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10013 temp->len += 4;
10014 break;
10015 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10016 memcpy(temp->str + temp->len, &((struct sockaddr_in6 *)&cli_conn->addr.from)->sin6_addr, 16);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10017 temp->len += 16;
10018 break;
10019 default:
10020 return 0;
10021 }
10022
10023 smp->data.str = *temp;
10024 smp->type = SMP_T_BIN;
10025 return 1;
10026}
10027
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10028/* This function is used to validate the arguments passed to any "hdr" fetch
10029 * keyword. These keywords support an optional positive or negative occurrence
10030 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
10031 * is assumed that the types are already the correct ones. Returns 0 on error,
10032 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
10033 * error message in case of error, that the caller is responsible for freeing.
10034 * The initial location must either be freeable or NULL.
10035 */
10036static int val_hdr(struct arg *arg, char **err_msg)
10037{
10038 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]10039 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10040 return 0;
10041 }
10042 return 1;
10043}
10044
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10045/* takes an UINT value on input supposed to represent the time since EPOCH,
10046 * adds an optional offset found in args[0] and emits a string representing
10047 * the date in RFC-1123/5322 format.
10048 */
10049static int sample_conv_http_date(const struct arg *args, struct sample *smp)
10050{
10051 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
10052 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
10053 struct chunk *temp;
10054 struct tm *tm;
10055 time_t curr_date = smp->data.uint;
10056
10057 /* add offset */
10058 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
10059 curr_date += args[0].data.sint;
10060
10061 tm = gmtime(&curr_date);
10062
10063 temp = get_trash_chunk();
10064 temp->len = snprintf(temp->str, temp->size - temp->len,
10065 "%s, %02d %s %04d %02d:%02d:%02d GMT",
10066 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
10067 tm->tm_hour, tm->tm_min, tm->tm_sec);
10068
10069 smp->data.str = *temp;
10070 smp->type = SMP_T_STR;
10071 return 1;
10072}
10073
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10074/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10075/* All supported ACL keywords must be declared here. */
10076/************************************************************************/
10077
10078/* Note: must not be declared <const> as its list will be overwritten.
10079 * Please take care of keeping this list alphabetically sorted.
10080 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]10081static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10082 { "base", "base", pat_parse_str, pat_match_str },
10083 { "base_beg", "base", pat_parse_str, pat_match_beg },
10084 { "base_dir", "base", pat_parse_str, pat_match_dir },
10085 { "base_dom", "base", pat_parse_str, pat_match_dom },
10086 { "base_end", "base", pat_parse_str, pat_match_end },
10087 { "base_len", "base", pat_parse_int, pat_match_len },
10088 { "base_reg", "base", pat_parse_reg, pat_match_reg },
10089 { "base_sub", "base", pat_parse_str, pat_match_sub },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10090
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10091 { "cook", "req.cook", pat_parse_str, pat_match_str },
10092 { "cook_beg", "req.cook", pat_parse_str, pat_match_beg },
10093 { "cook_dir", "req.cook", pat_parse_str, pat_match_dir },
10094 { "cook_dom", "req.cook", pat_parse_str, pat_match_dom },
10095 { "cook_end", "req.cook", pat_parse_str, pat_match_end },
10096 { "cook_len", "req.cook", pat_parse_int, pat_match_len },
10097 { "cook_reg", "req.cook", pat_parse_reg, pat_match_reg },
10098 { "cook_sub", "req.cook", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10099
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10100 { "hdr", "req.hdr", pat_parse_str, pat_match_str },
10101 { "hdr_beg", "req.hdr", pat_parse_str, pat_match_beg },
10102 { "hdr_dir", "req.hdr", pat_parse_str, pat_match_dir },
10103 { "hdr_dom", "req.hdr", pat_parse_str, pat_match_dom },
10104 { "hdr_end", "req.hdr", pat_parse_str, pat_match_end },
10105 { "hdr_len", "req.hdr", pat_parse_int, pat_match_len },
10106 { "hdr_reg", "req.hdr", pat_parse_reg, pat_match_reg },
10107 { "hdr_sub", "req.hdr", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10108
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10109 { "http_auth_group", NULL, pat_parse_strcat, pat_match_auth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10110
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10111 { "method", NULL, pat_parse_meth, pat_match_meth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10112
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10113 { "path", "path", pat_parse_str, pat_match_str },
10114 { "path_beg", "path", pat_parse_str, pat_match_beg },
10115 { "path_dir", "path", pat_parse_str, pat_match_dir },
10116 { "path_dom", "path", pat_parse_str, pat_match_dom },
10117 { "path_end", "path", pat_parse_str, pat_match_end },
10118 { "path_len", "path", pat_parse_int, pat_match_len },
10119 { "path_reg", "path", pat_parse_reg, pat_match_reg },
10120 { "path_sub", "path", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10121
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10122 { "req_ver", "req.ver", pat_parse_str, pat_match_str },
10123 { "resp_ver", "res.ver", pat_parse_str, pat_match_str },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10124
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10125 { "scook", "res.cook", pat_parse_str, pat_match_str },
10126 { "scook_beg", "res.cook", pat_parse_str, pat_match_beg },
10127 { "scook_dir", "res.cook", pat_parse_str, pat_match_dir },
10128 { "scook_dom", "res.cook", pat_parse_str, pat_match_dom },
10129 { "scook_end", "res.cook", pat_parse_str, pat_match_end },
10130 { "scook_len", "res.cook", pat_parse_int, pat_match_len },
10131 { "scook_reg", "res.cook", pat_parse_reg, pat_match_reg },
10132 { "scook_sub", "res.cook", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10133
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10134 { "shdr", "res.hdr", pat_parse_str, pat_match_str },
10135 { "shdr_beg", "res.hdr", pat_parse_str, pat_match_beg },
10136 { "shdr_dir", "res.hdr", pat_parse_str, pat_match_dir },
10137 { "shdr_dom", "res.hdr", pat_parse_str, pat_match_dom },
10138 { "shdr_end", "res.hdr", pat_parse_str, pat_match_end },
10139 { "shdr_len", "res.hdr", pat_parse_int, pat_match_len },
10140 { "shdr_reg", "res.hdr", pat_parse_reg, pat_match_reg },
10141 { "shdr_sub", "res.hdr", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10142
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10143 { "url", "url", pat_parse_str, pat_match_str },
10144 { "url_beg", "url", pat_parse_str, pat_match_beg },
10145 { "url_dir", "url", pat_parse_str, pat_match_dir },
10146 { "url_dom", "url", pat_parse_str, pat_match_dom },
10147 { "url_end", "url", pat_parse_str, pat_match_end },
10148 { "url_len", "url", pat_parse_int, pat_match_len },
10149 { "url_reg", "url", pat_parse_reg, pat_match_reg },
10150 { "url_sub", "url", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10151
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10152 { "urlp", "urlp", pat_parse_str, pat_match_str },
10153 { "urlp_beg", "urlp", pat_parse_str, pat_match_beg },
10154 { "urlp_dir", "urlp", pat_parse_str, pat_match_dir },
10155 { "urlp_dom", "urlp", pat_parse_str, pat_match_dom },
10156 { "urlp_end", "urlp", pat_parse_str, pat_match_end },
10157 { "urlp_len", "urlp", pat_parse_int, pat_match_len },
10158 { "urlp_reg", "urlp", pat_parse_reg, pat_match_reg },
10159 { "urlp_sub", "urlp", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10160
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]10161 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10162}};
10163
10164/************************************************************************/
10165/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10166/************************************************************************/
10167/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]10168static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10169 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10170 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10171 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
10172
10173 /* cookie is valid in both directions (eg: for "stick ...") but cook*
10174 * are only here to match the ACL's name, are request-only and are used
10175 * for ACL compatibility only.
10176 */
10177 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10178 { "cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
10179 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10180 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10181
10182 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
10183 * only here to match the ACL's name, are request-only and are used for
10184 * ACL compatibility only.
10185 */
10186 { "hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
10187 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10188 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10189 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10190
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]10191 { "http_auth", smp_fetch_http_auth, ARG1(1,USR), NULL, SMP_T_BOOL, SMP_USE_HRQHV },
10192 { "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]10193 { "http_first_req", smp_fetch_http_first_req, 0, NULL, SMP_T_BOOL, SMP_USE_HRQHP },
10194 { "method", smp_fetch_meth, 0, NULL, SMP_T_UINT, SMP_USE_HRQHP },
10195 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10196
10197 /* HTTP protocol on the request path */
10198 { "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]10199 { "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]10200
10201 /* HTTP version on the request path */
10202 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10203 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10204
10205 /* HTTP version on the response path */
10206 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_CSTR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10207 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10208
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10209 /* explicit req.{cook,hdr} are used to force the fetch direction to be request-only */
10210 { "req.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10211 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10212 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10213
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10214 { "req.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV },
10215 { "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]10216 { "req.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV },
10217 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10218 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10219 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10220
10221 /* explicit req.{cook,hdr} are used to force the fetch direction to be response-only */
10222 { "res.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10223 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10224 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10225
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10226 { "res.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10227 { "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]10228 { "res.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10229 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10230 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10231 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10232
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10233 /* scook is valid only on the response and is used for ACL compatibility */
10234 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10235 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10236 { "scook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10237 { "set-cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV }, /* deprecated */
10238
10239 /* shdr is valid only on the response and is used for ACL compatibility */
10240 { "shdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10241 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10242 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10243 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10244
10245 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
10246 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10247 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10248 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10249 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
10250 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10251 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10252 { "urlp" , smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10253 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10254 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10255}};
10256
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10257
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10258/* Note: must not be declared <const> as its list will be overwritten */
10259static struct sample_conv_kw_list sample_conv_kws = {ILH, {
10260 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR },
10261 { NULL, NULL, 0, 0, 0 },
10262}};
10263
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10264__attribute__((constructor))
10265static void __http_protocol_init(void)
10266{
10267 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10268 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10269 sample_register_convs(&sample_conv_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10270}
10271
10272
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]10273/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]10274 * Local variables:
10275 * c-indent-level: 8
10276 * c-basic-offset: 8
10277 * End:
10278 */