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git01.mediatek.com / haproxy / 02bce8be01ac421366f8822f24c6eec7e18e55a2 / . / src / proto_http.c
blob: 164faac227c071ac00a220ab2881e54026b3d721 [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 */
Willy Tarreau72575502013-12-24 14:41:35 +0100[diff] [blame]2146 if (!(msg->flags & HTTP_MSGF_VER_11) || !(txn->req.flags & HTTP_MSGF_VER_11))
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]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 Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2310 req->flags |= CF_WAKE_WRITE;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2311 return 0;
2312 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2313 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2314 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2315 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2316 }
2317
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2318 /* Note that we have the same problem with the response ; we
2319 * may want to send a redirect, error or anything which requires
2320 * some spare space. So we'll ensure that we have at least
2321 * maxrewrite bytes available in the response buffer before
2322 * processing that one. This will only affect pipelined
2323 * keep-alive requests.
2324 */
2325 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2326 unlikely(!channel_reserved(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2327 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2328 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2329 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2330 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]2331 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2332 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2333 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2334 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]2335 s->rep->flags |= CF_WAKE_WRITE;
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2336 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2337 return 0;
2338 }
2339 }
2340
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2341 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2342 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2343 }
2344
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2345 /* 1: we might have to print this header in debug mode */
2346 if (unlikely((global.mode & MODE_DEBUG) &&
2347 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2348 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2349 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2350
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2351 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2352 /* this is a bit complex : in case of error on the request line,
2353 * we know that rq.l is still zero, so we display only the part
2354 * up to the end of the line (truncated by debug_hdr).
2355 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2356 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2357 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2358
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2359 sol += hdr_idx_first_pos(&txn->hdr_idx);
2360 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2361
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2362 while (cur_idx) {
2363 eol = sol + txn->hdr_idx.v[cur_idx].len;
2364 debug_hdr("clihdr", s, sol, eol);
2365 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2366 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2367 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2368 }
2369
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2370
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2371 /*
2372 * Now we quickly check if we have found a full valid request.
2373 * If not so, we check the FD and buffer states before leaving.
2374 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2375 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2376 * requests are checked first. When waiting for a second request
2377 * on a keep-alive session, if we encounter and error, close, t/o,
2378 * we note the error in the session flags but don't set any state.
2379 * Since the error will be noted there, it will not be counted by
2380 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2381 * Last, we may increase some tracked counters' http request errors on
2382 * the cases that are deliberately the client's fault. For instance,
2383 * a timeout or connection reset is not counted as an error. However
2384 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2385 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2386
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2387 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2388 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2389 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2390 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2391 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2392 session_inc_http_req_ctr(s);
2393 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2394 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2395 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2396 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2397
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2398 /* 1: Since we are in header mode, if there's no space
2399 * left for headers, we won't be able to free more
2400 * later, so the session will never terminate. We
2401 * must terminate it now.
2402 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2403 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2404 /* FIXME: check if URI is set and return Status
2405 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2406 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2407 session_inc_http_req_ctr(s);
2408 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2409 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2410 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2411 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2412 goto return_bad_req;
2413 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2414
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2415 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2416 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2417 if (!(s->flags & SN_ERR_MASK))
2418 s->flags |= SN_ERR_CLICL;
2419
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2420 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2421 goto failed_keep_alive;
2422
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2423 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2424 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2425 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]2426 session_inc_http_err_ctr(s);
2427 }
2428
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2429 txn->status = 400;
2430 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2431 msg->msg_state = HTTP_MSG_ERROR;
2432 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2433
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2434 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2435 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2436 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2437 if (s->listener->counters)
2438 s->listener->counters->failed_req++;
2439
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2440 if (!(s->flags & SN_FINST_MASK))
2441 s->flags |= SN_FINST_R;
2442 return 0;
2443 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2444
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2445 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2446 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]2447 if (!(s->flags & SN_ERR_MASK))
2448 s->flags |= SN_ERR_CLITO;
2449
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2450 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2451 goto failed_keep_alive;
2452
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2453 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2454 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2455 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]2456 session_inc_http_err_ctr(s);
2457 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2458 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2459 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2460 msg->msg_state = HTTP_MSG_ERROR;
2461 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2462
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2463 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2464 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2465 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2466 if (s->listener->counters)
2467 s->listener->counters->failed_req++;
2468
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2469 if (!(s->flags & SN_FINST_MASK))
2470 s->flags |= SN_FINST_R;
2471 return 0;
2472 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2473
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2474 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2475 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2476 if (!(s->flags & SN_ERR_MASK))
2477 s->flags |= SN_ERR_CLICL;
2478
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2479 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2480 goto failed_keep_alive;
2481
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2482 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2483 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]2484 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2485 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2486 msg->msg_state = HTTP_MSG_ERROR;
2487 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2488
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2489 session_inc_http_err_ctr(s);
2490 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2491 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2492 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2493 if (s->listener->counters)
2494 s->listener->counters->failed_req++;
2495
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2496 if (!(s->flags & SN_FINST_MASK))
2497 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2498 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2499 }
2500
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2501 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2502 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2503 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2504#ifdef TCP_QUICKACK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]2505 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i && objt_conn(s->req->prod->end) && conn_ctrl_ready(__objt_conn(s->req->prod->end))) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2506 /* We need more data, we have to re-enable quick-ack in case we
2507 * previously disabled it, otherwise we might cause the client
2508 * to delay next data.
2509 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2510 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]2511 }
2512#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2513
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2514 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2515 /* If the client starts to talk, let's fall back to
2516 * request timeout processing.
2517 */
2518 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2519 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2520 }
2521
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2522 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2523 if (!tick_isset(req->analyse_exp)) {
2524 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2525 (txn->flags & TX_WAIT_NEXT_RQ) &&
2526 tick_isset(s->be->timeout.httpka))
2527 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2528 else
2529 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2530 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2531
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2532 /* we're not ready yet */
2533 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2534
2535 failed_keep_alive:
2536 /* Here we process low-level errors for keep-alive requests. In
2537 * short, if the request is not the first one and it experiences
2538 * a timeout, read error or shutdown, we just silently close so
2539 * that the client can try again.
2540 */
2541 txn->status = 0;
2542 msg->msg_state = HTTP_MSG_RQBEFORE;
2543 req->analysers = 0;
2544 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2545 s->logs.level = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2546 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2547 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2548 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2549 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2550
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2551 /* OK now we have a complete HTTP request with indexed headers. Let's
2552 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2553 * 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]2554 * 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]2555 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2556 * byte after the last LF. msg->sov points to the first byte of data.
2557 * msg->eol cannot be trusted because it may have been left uninitialized
2558 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2559 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2560
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2561 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2562 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2563
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2564 if (txn->flags & TX_WAIT_NEXT_RQ) {
2565 /* kill the pending keep-alive timeout */
2566 txn->flags &= ~TX_WAIT_NEXT_RQ;
2567 req->analyse_exp = TICK_ETERNITY;
2568 }
2569
2570
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2571 /* Maybe we found in invalid header name while we were configured not
2572 * to block on that, so we have to capture it now.
2573 */
2574 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2575 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]2576
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2577 /*
2578 * 1: identify the method
2579 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2580 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2581
2582 /* we can make use of server redirect on GET and HEAD */
2583 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2584 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2585
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2586 /*
2587 * 2: check if the URI matches the monitor_uri.
2588 * We have to do this for every request which gets in, because
2589 * the monitor-uri is defined by the frontend.
2590 */
2591 if (unlikely((s->fe->monitor_uri_len != 0) &&
2592 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2593 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2594 s->fe->monitor_uri,
2595 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2596 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2597 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2598 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2599 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2600
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2601 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2602 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2603
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2604 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2605 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2606 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]2607
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2608 ret = acl_pass(ret);
2609 if (cond->pol == ACL_COND_UNLESS)
2610 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2611
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2612 if (ret) {
2613 /* we fail this request, let's return 503 service unavail */
2614 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2615 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2616 if (!(s->flags & SN_ERR_MASK))
2617 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2618 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2619 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2620 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2621
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2622 /* nothing to fail, let's reply normaly */
2623 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2624 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2625 if (!(s->flags & SN_ERR_MASK))
2626 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2627 goto return_prx_cond;
2628 }
2629
2630 /*
2631 * 3: Maybe we have to copy the original REQURI for the logs ?
2632 * Note: we cannot log anymore if the request has been
2633 * classified as invalid.
2634 */
2635 if (unlikely(s->logs.logwait & LW_REQ)) {
2636 /* we have a complete HTTP request that we must log */
2637 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2638 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2639
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2640 if (urilen >= REQURI_LEN)
2641 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2642 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2643 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2644
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2645 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2646 s->do_log(s);
2647 } else {
2648 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2649 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2650 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2651
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2652 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2653 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2654 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2655
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2656 /* ... and check if the request is HTTP/1.1 or above */
2657 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2658 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2659 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2660 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2661 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2662
2663 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2664 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]2665
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2666 /* if the frontend has "option http-use-proxy-header", we'll check if
2667 * we have what looks like a proxied connection instead of a connection,
2668 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2669 * Note that this is *not* RFC-compliant, however browsers and proxies
2670 * happen to do that despite being non-standard :-(
2671 * We consider that a request not beginning with either '/' or '*' is
2672 * a proxied connection, which covers both "scheme://location" and
2673 * CONNECT ip:port.
2674 */
2675 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2676 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2677 txn->flags |= TX_USE_PX_CONN;
2678
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2679 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2680 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2681
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2682 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2683 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2684 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2685 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2686
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2687 /* 6: determine the transfer-length.
2688 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2689 * the presence of a message-body in a REQUEST and its transfer length
2690 * must be determined that way (in order of precedence) :
2691 * 1. The presence of a message-body in a request is signaled by the
2692 * inclusion of a Content-Length or Transfer-Encoding header field
2693 * in the request's header fields. When a request message contains
2694 * both a message-body of non-zero length and a method that does
2695 * not define any semantics for that request message-body, then an
2696 * origin server SHOULD either ignore the message-body or respond
2697 * with an appropriate error message (e.g., 413). A proxy or
2698 * gateway, when presented the same request, SHOULD either forward
2699 * the request inbound with the message- body or ignore the
2700 * message-body when determining a response.
2701 *
2702 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2703 * and the "chunked" transfer-coding (Section 6.2) is used, the
2704 * transfer-length is defined by the use of this transfer-coding.
2705 * If a Transfer-Encoding header field is present and the "chunked"
2706 * transfer-coding is not present, the transfer-length is defined
2707 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2708 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2709 * 3. If a Content-Length header field is present, its decimal value in
2710 * OCTETs represents both the entity-length and the transfer-length.
2711 * If a message is received with both a Transfer-Encoding header
2712 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2713 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2714 * 4. By the server closing the connection. (Closing the connection
2715 * cannot be used to indicate the end of a request body, since that
2716 * would leave no possibility for the server to send back a response.)
2717 *
2718 * Whenever a transfer-coding is applied to a message-body, the set of
2719 * transfer-codings MUST include "chunked", unless the message indicates
2720 * it is terminated by closing the connection. When the "chunked"
2721 * transfer-coding is used, it MUST be the last transfer-coding applied
2722 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2723 */
2724
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2725 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2726 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2727 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2728 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2729 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2730 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2731 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2732 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2733 /* bad transfer-encoding (chunked followed by something else) */
2734 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2735 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2736 break;
2737 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2738 }
2739
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2740 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2741 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2742 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2743 signed long long cl;
2744
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2745 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2746 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2747 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2748 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2749
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2750 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2751 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2752 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2753 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2754
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2755 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2756 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2757 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2758 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2759
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2760 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2761 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2762 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2763 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2764
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2765 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2766 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2767 }
2768
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2769 /* bodyless requests have a known length */
2770 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2771 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2772
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2773 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2774 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2775 req->analyse_exp = TICK_ETERNITY;
2776 return 1;
2777
2778 return_bad_req:
2779 /* We centralize bad requests processing here */
2780 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2781 /* we detected a parsing error. We want to archive this request
2782 * in the dedicated proxy area for later troubleshooting.
2783 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2784 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]2785 }
2786
2787 txn->req.msg_state = HTTP_MSG_ERROR;
2788 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2789 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2790
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2791 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2792 if (s->listener->counters)
2793 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2794
2795 return_prx_cond:
2796 if (!(s->flags & SN_ERR_MASK))
2797 s->flags |= SN_ERR_PRXCOND;
2798 if (!(s->flags & SN_FINST_MASK))
2799 s->flags |= SN_FINST_R;
2800
2801 req->analysers = 0;
2802 req->analyse_exp = TICK_ETERNITY;
2803 return 0;
2804}
2805
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2806
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2807/* This function prepares an applet to handle the stats. It can deal with the
2808 * "100-continue" expectation, check that admin rules are met for POST requests,
2809 * and program a response message if something was unexpected. It cannot fail
2810 * 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]2811 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2812 * s->target which is supposed to already point to the stats applet. The caller
2813 * is expected to have already assigned an appctx to the session.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2814 */
2815int http_handle_stats(struct session *s, struct channel *req)
2816{
2817 struct stats_admin_rule *stats_admin_rule;
2818 struct stream_interface *si = s->rep->prod;
2819 struct http_txn *txn = &s->txn;
2820 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2821 struct uri_auth *uri_auth = s->be->uri_auth;
2822 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2823 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2824
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2825 appctx = si_appctx(si);
2826 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
2827 appctx->st1 = appctx->st2 = 0;
2828 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
2829 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2830
2831 uri = msg->chn->buf->p + msg->sl.rq.u;
2832 lookup = uri + uri_auth->uri_len;
2833
2834 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
2835 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2836 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2837 break;
2838 }
2839 }
2840
2841 if (uri_auth->refresh) {
2842 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
2843 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2844 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2845 break;
2846 }
2847 }
2848 }
2849
2850 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
2851 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2852 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2853 break;
2854 }
2855 }
2856
2857 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
2858 if (memcmp(h, ";st=", 4) == 0) {
2859 int i;
2860 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2861 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2862 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
2863 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2864 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2865 break;
2866 }
2867 }
2868 break;
2869 }
2870 }
2871
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2872 appctx->ctx.stats.scope_str = 0;
2873 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2874 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
2875 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
2876 int itx = 0;
2877 const char *h2;
2878 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
2879 const char *err;
2880
2881 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
2882 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2883 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2884 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
2885 itx++;
2886 h++;
2887 }
2888
2889 if (itx > STAT_SCOPE_TXT_MAXLEN)
2890 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2891 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2892
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2893 /* 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]2894 memcpy(scope_txt, h2, itx);
2895 scope_txt[itx] = '\0';
2896 err = invalid_char(scope_txt);
2897 if (err) {
2898 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2899 appctx->ctx.stats.scope_str = 0;
2900 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2901 }
2902 break;
2903 }
2904 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2905
2906 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2907 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2908 int ret = 1;
2909
2910 if (stats_admin_rule->cond) {
2911 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
2912 ret = acl_pass(ret);
2913 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
2914 ret = !ret;
2915 }
2916
2917 if (ret) {
2918 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2919 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2920 break;
2921 }
2922 }
2923
2924 /* Was the status page requested with a POST ? */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2925 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2926 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2927 if (msg->msg_state < HTTP_MSG_100_SENT) {
2928 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
2929 * send an HTTP/1.1 100 Continue intermediate response.
2930 */
2931 if (msg->flags & HTTP_MSGF_VER_11) {
2932 struct hdr_ctx ctx;
2933 ctx.idx = 0;
2934 /* Expect is allowed in 1.1, look for it */
2935 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
2936 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
2937 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
2938 }
2939 }
2940 msg->msg_state = HTTP_MSG_100_SENT;
2941 s->logs.tv_request = now; /* update the request timer to reflect full request */
2942 }
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2943 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2944 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2945 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2946 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
2947 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]2948 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2949 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2950 else {
2951 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2952 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2953 }
2954
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2955 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2956 return 1;
2957}
2958
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]2959/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
2960 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
2961 */
2962static inline void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
2963{
2964#ifdef IP_TOS
2965 if (from.ss_family == AF_INET)
2966 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
2967#endif
2968#ifdef IPV6_TCLASS
2969 if (from.ss_family == AF_INET6) {
2970 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
2971 /* v4-mapped addresses need IP_TOS */
2972 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
2973 else
2974 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
2975 }
2976#endif
2977}
2978
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2979/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2980 * transaction <txn>. Returns the first rule that prevents further processing
2981 * of the request (auth, deny, ...) or NULL if it executed all rules or stopped
2982 * on an allow. It may set the TX_CLDENY on txn->flags if it encounters a deny
2983 * rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2984 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2985static struct http_req_rule *
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2986http_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]2987{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2988 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2989 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2990 struct hdr_ctx ctx;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2991
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2992 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2993 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2994 continue;
2995
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2996 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2997 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2998 int ret;
2999
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3000 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]3001 ret = acl_pass(ret);
3002
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3003 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3004 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3005
3006 if (!ret) /* condition not matched */
3007 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3008 }
3009
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3010
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3011 switch (rule->action) {
3012 case HTTP_REQ_ACT_ALLOW:
3013 return NULL; /* "allow" rules are OK */
3014
3015 case HTTP_REQ_ACT_DENY:
3016 txn->flags |= TX_CLDENY;
3017 return rule;
3018
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3019 case HTTP_REQ_ACT_TARPIT:
3020 txn->flags |= TX_CLTARPIT;
3021 return rule;
3022
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3023 case HTTP_REQ_ACT_AUTH:
3024 return rule;
3025
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3026 case HTTP_REQ_ACT_REDIR:
3027 return rule;
3028
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3029 case HTTP_REQ_ACT_SET_NICE:
3030 s->task->nice = rule->arg.nice;
3031 break;
3032
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3033 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3034 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3035 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]3036 break;
3037
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3038 case HTTP_REQ_ACT_SET_MARK:
3039#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3040 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3041 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]3042#endif
3043 break;
3044
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3045 case HTTP_REQ_ACT_SET_LOGL:
3046 s->logs.level = rule->arg.loglevel;
3047 break;
3048
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3049 case HTTP_REQ_ACT_SET_HDR:
3050 ctx.idx = 0;
3051 /* remove all occurrences of the header */
3052 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3053 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3054 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3055 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3056 /* now fall through to header addition */
3057
3058 case HTTP_REQ_ACT_ADD_HDR:
3059 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3060 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3061 trash.len = rule->arg.hdr_add.name_len;
3062 trash.str[trash.len++] = ':';
3063 trash.str[trash.len++] = ' ';
3064 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3065 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3066 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3067 }
3068 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3069
3070 /* we reached the end of the rules, nothing to report */
Willy Tarreau418c1a02012-12-25 20:52:58 +0100[diff] [blame]3071 return NULL;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3072}
3073
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3074
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3075/* Executes the http-response rules <rules> for session <s>, proxy <px> and
3076 * transaction <txn>. Returns the first rule that prevents further processing
3077 * of the response (deny, ...) or NULL if it executed all rules or stopped
3078 * on an allow. It may set the TX_SVDENY on txn->flags if it encounters a deny
3079 * rule.
3080 */
3081static struct http_res_rule *
3082http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3083{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3084 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3085 struct http_res_rule *rule;
3086 struct hdr_ctx ctx;
3087
3088 list_for_each_entry(rule, rules, list) {
3089 if (rule->action >= HTTP_RES_ACT_MAX)
3090 continue;
3091
3092 /* check optional condition */
3093 if (rule->cond) {
3094 int ret;
3095
3096 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
3097 ret = acl_pass(ret);
3098
3099 if (rule->cond->pol == ACL_COND_UNLESS)
3100 ret = !ret;
3101
3102 if (!ret) /* condition not matched */
3103 continue;
3104 }
3105
3106
3107 switch (rule->action) {
3108 case HTTP_RES_ACT_ALLOW:
3109 return NULL; /* "allow" rules are OK */
3110
3111 case HTTP_RES_ACT_DENY:
3112 txn->flags |= TX_SVDENY;
3113 return rule;
3114
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3115 case HTTP_RES_ACT_SET_NICE:
3116 s->task->nice = rule->arg.nice;
3117 break;
3118
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3119 case HTTP_RES_ACT_SET_TOS:
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3120 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3121 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]3122 break;
3123
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3124 case HTTP_RES_ACT_SET_MARK:
3125#ifdef SO_MARK
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]3126 if ((cli_conn = objt_conn(s->req->prod->end)) && conn_ctrl_ready(cli_conn))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3127 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]3128#endif
3129 break;
3130
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3131 case HTTP_RES_ACT_SET_LOGL:
3132 s->logs.level = rule->arg.loglevel;
3133 break;
3134
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3135 case HTTP_RES_ACT_SET_HDR:
3136 ctx.idx = 0;
3137 /* remove all occurrences of the header */
3138 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3139 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3140 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3141 }
3142 /* now fall through to header addition */
3143
3144 case HTTP_RES_ACT_ADD_HDR:
3145 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3146 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3147 trash.len = rule->arg.hdr_add.name_len;
3148 trash.str[trash.len++] = ':';
3149 trash.str[trash.len++] = ' ';
3150 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3151 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3152 break;
3153 }
3154 }
3155
3156 /* we reached the end of the rules, nothing to report */
3157 return NULL;
3158}
3159
3160
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3161/* Perform an HTTP redirect based on the information in <rule>. The function
3162 * returns non-zero on success, or zero in case of a, irrecoverable error such
3163 * as too large a request to build a valid response.
3164 */
3165static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3166{
3167 struct http_msg *msg = &txn->req;
3168 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3169 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3170
3171 /* build redirect message */
3172 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3173 case 308:
3174 msg_fmt = HTTP_308;
3175 break;
3176 case 307:
3177 msg_fmt = HTTP_307;
3178 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3179 case 303:
3180 msg_fmt = HTTP_303;
3181 break;
3182 case 301:
3183 msg_fmt = HTTP_301;
3184 break;
3185 case 302:
3186 default:
3187 msg_fmt = HTTP_302;
3188 break;
3189 }
3190
3191 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3192 return 0;
3193
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3194 location = trash.str + trash.len;
3195
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3196 switch(rule->type) {
3197 case REDIRECT_TYPE_SCHEME: {
3198 const char *path;
3199 const char *host;
3200 struct hdr_ctx ctx;
3201 int pathlen;
3202 int hostlen;
3203
3204 host = "";
3205 hostlen = 0;
3206 ctx.idx = 0;
3207 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
3208 host = ctx.line + ctx.val;
3209 hostlen = ctx.vlen;
3210 }
3211
3212 path = http_get_path(txn);
3213 /* build message using path */
3214 if (path) {
3215 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3216 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3217 int qs = 0;
3218 while (qs < pathlen) {
3219 if (path[qs] == '?') {
3220 pathlen = qs;
3221 break;
3222 }
3223 qs++;
3224 }
3225 }
3226 } else {
3227 path = "/";
3228 pathlen = 1;
3229 }
3230
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3231 if (rule->rdr_str) { /* this is an old "redirect" rule */
3232 /* check if we can add scheme + "://" + host + path */
3233 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3234 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3235
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3236 /* add scheme */
3237 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3238 trash.len += rule->rdr_len;
3239 }
3240 else {
3241 /* add scheme with executing log format */
3242 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]3243
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3244 /* check if we can add scheme + "://" + host + path */
3245 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3246 return 0;
3247 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3248 /* add "://" */
3249 memcpy(trash.str + trash.len, "://", 3);
3250 trash.len += 3;
3251
3252 /* add host */
3253 memcpy(trash.str + trash.len, host, hostlen);
3254 trash.len += hostlen;
3255
3256 /* add path */
3257 memcpy(trash.str + trash.len, path, pathlen);
3258 trash.len += pathlen;
3259
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3260 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3261 if (trash.len && trash.str[trash.len - 1] != '/' &&
3262 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3263 if (trash.len > trash.size - 5)
3264 return 0;
3265 trash.str[trash.len] = '/';
3266 trash.len++;
3267 }
3268
3269 break;
3270 }
3271 case REDIRECT_TYPE_PREFIX: {
3272 const char *path;
3273 int pathlen;
3274
3275 path = http_get_path(txn);
3276 /* build message using path */
3277 if (path) {
3278 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3279 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3280 int qs = 0;
3281 while (qs < pathlen) {
3282 if (path[qs] == '?') {
3283 pathlen = qs;
3284 break;
3285 }
3286 qs++;
3287 }
3288 }
3289 } else {
3290 path = "/";
3291 pathlen = 1;
3292 }
3293
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3294 if (rule->rdr_str) { /* this is an old "redirect" rule */
3295 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3296 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3297
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3298 /* add prefix. Note that if prefix == "/", we don't want to
3299 * add anything, otherwise it makes it hard for the user to
3300 * configure a self-redirection.
3301 */
3302 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3303 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3304 trash.len += rule->rdr_len;
3305 }
3306 }
3307 else {
3308 /* add prefix with executing log format */
3309 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3310
3311 /* Check length */
3312 if (trash.len + pathlen > trash.size - 4)
3313 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3314 }
3315
3316 /* add path */
3317 memcpy(trash.str + trash.len, path, pathlen);
3318 trash.len += pathlen;
3319
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3320 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3321 if (trash.len && trash.str[trash.len - 1] != '/' &&
3322 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3323 if (trash.len > trash.size - 5)
3324 return 0;
3325 trash.str[trash.len] = '/';
3326 trash.len++;
3327 }
3328
3329 break;
3330 }
3331 case REDIRECT_TYPE_LOCATION:
3332 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3333 if (rule->rdr_str) { /* this is an old "redirect" rule */
3334 if (trash.len + rule->rdr_len > trash.size - 4)
3335 return 0;
3336
3337 /* add location */
3338 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3339 trash.len += rule->rdr_len;
3340 }
3341 else {
3342 /* add location with executing log format */
3343 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]3344
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3345 /* Check left length */
3346 if (trash.len > trash.size - 4)
3347 return 0;
3348 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3349 break;
3350 }
3351
3352 if (rule->cookie_len) {
3353 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3354 trash.len += 14;
3355 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3356 trash.len += rule->cookie_len;
3357 memcpy(trash.str + trash.len, "\r\n", 2);
3358 trash.len += 2;
3359 }
3360
3361 /* add end of headers and the keep-alive/close status.
3362 * We may choose to set keep-alive if the Location begins
3363 * with a slash, because the client will come back to the
3364 * same server.
3365 */
3366 txn->status = rule->code;
3367 /* let's log the request time */
3368 s->logs.tv_request = now;
3369
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3370 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3371 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3372 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3373 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3374 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3375 /* keep-alive possible */
3376 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3377 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3378 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3379 trash.len += 30;
3380 } else {
3381 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3382 trash.len += 24;
3383 }
3384 }
3385 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3386 trash.len += 4;
3387 bo_inject(txn->rsp.chn, trash.str, trash.len);
3388 /* "eat" the request */
3389 bi_fast_delete(txn->req.chn->buf, msg->sov);
3390 msg->sov = 0;
3391 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3392 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3393 txn->req.msg_state = HTTP_MSG_CLOSED;
3394 txn->rsp.msg_state = HTTP_MSG_DONE;
3395 } else {
3396 /* keep-alive not possible */
3397 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3398 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3399 trash.len += 29;
3400 } else {
3401 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3402 trash.len += 23;
3403 }
3404 stream_int_retnclose(txn->req.chn->prod, &trash);
3405 txn->req.chn->analysers = 0;
3406 }
3407
3408 if (!(s->flags & SN_ERR_MASK))
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3409 s->flags |= SN_ERR_LOCAL;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3410 if (!(s->flags & SN_FINST_MASK))
3411 s->flags |= SN_FINST_R;
3412
3413 return 1;
3414}
3415
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3416/* This stream analyser runs all HTTP request processing which is common to
3417 * frontends and backends, which means blocking ACLs, filters, connection-close,
3418 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3419 * 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]3420 * either needs more data or wants to immediately abort the request (eg: deny,
3421 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3422 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3423int 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]3424{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3425 struct http_txn *txn = &s->txn;
3426 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3427 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3428 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3429 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3430 struct cond_wordlist *wl;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3431
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3432 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3433 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3434 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3435 return 0;
3436 }
3437
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3438 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3439 req->analyse_exp = TICK_ETERNITY;
3440
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3441 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]3442 now_ms, __FUNCTION__,
3443 s,
3444 req,
3445 req->rex, req->wex,
3446 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3447 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3448 req->analysers);
3449
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3450 /* first check whether we have some ACLs set to block this request */
3451 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3452 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]3453
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3454 ret = acl_pass(ret);
3455 if (cond->pol == ACL_COND_UNLESS)
3456 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]3457
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3458 if (ret) {
3459 txn->status = 403;
3460 /* let's log the request time */
3461 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3462 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3463 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3464 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3465 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3466 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3467
Willy Tarreau5d5b5d82012-12-09 12:00:04 +0100[diff] [blame]3468 /* just in case we have some per-backend tracking */
3469 session_inc_be_http_req_ctr(s);
3470
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3471 /* evaluate http-request rules */
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3472 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]3473
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3474 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3475 if (!http_req_last_rule) {
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3476 if (stats_check_uri(s->rep->prod, txn, px)) {
3477 s->target = &http_stats_applet.obj_type;
Willy Tarreau1fbe1c92013-12-01 09:35:41 +0100[diff] [blame]3478 if (unlikely(!stream_int_register_handler(s->rep->prod, objt_applet(s->target)))) {
3479 txn->status = 500;
3480 s->logs.tv_request = now;
3481 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3482
Willy Tarreau1fbe1c92013-12-01 09:35:41 +0100[diff] [blame]3483 if (!(s->flags & SN_ERR_MASK))
3484 s->flags |= SN_ERR_RESOURCE;
3485 goto return_prx_cond;
3486 }
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3487 /* parse the whole stats request and extract the relevant information */
3488 http_handle_stats(s, req);
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3489 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]3490 }
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3491 }
3492
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3493 /* only apply req{,i}{rep/deny/tarpit} if the request was not yet
3494 * blocked by an http-request rule.
3495 */
3496 if (!(txn->flags & (TX_CLDENY|TX_CLTARPIT)) && (px->req_exp != NULL)) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3497 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3498 goto return_bad_req;
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3499 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3500
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3501 /* return a 403 if either rule has blocked */
3502 if (txn->flags & (TX_CLDENY|TX_CLTARPIT)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3503 if (txn->flags & TX_CLDENY) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3504 txn->status = 403;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3505 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3506 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3507 session_inc_http_err_ctr(s);
Willy Tarreau687ba132013-11-16 10:13:35 +0100[diff] [blame]3508 s->fe->fe_counters.denied_req++;
3509 if (s->fe != s->be)
3510 s->be->be_counters.denied_req++;
3511 if (s->listener->counters)
3512 s->listener->counters->denied_req++;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3513 goto return_prx_cond;
3514 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3515
3516 /* When a connection is tarpitted, we use the tarpit timeout,
3517 * which may be the same as the connect timeout if unspecified.
3518 * If unset, then set it to zero because we really want it to
3519 * eventually expire. We build the tarpit as an analyser.
3520 */
3521 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3522 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3523 /* wipe the request out so that we can drop the connection early
3524 * if the client closes first.
3525 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3526 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3527 req->analysers = 0; /* remove switching rules etc... */
3528 req->analysers |= AN_REQ_HTTP_TARPIT;
3529 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3530 if (!req->analyse_exp)
3531 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3532 session_inc_http_err_ctr(s);
Willy Tarreau687ba132013-11-16 10:13:35 +0100[diff] [blame]3533 s->fe->fe_counters.denied_req++;
3534 if (s->fe != s->be)
3535 s->be->be_counters.denied_req++;
3536 if (s->listener->counters)
3537 s->listener->counters->denied_req++;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3538 return 1;
3539 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3540 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3541
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3542 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3543 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3544 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3545 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3546 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3547 * avoid to redo the same work if FE and BE have the same settings (common).
3548 * The method consists in checking if options changed between the two calls
3549 * (implying that either one is non-null, or one of them is non-null and we
3550 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3551 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3552
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3553 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame^]3554 ((s->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_TUN)) ||
3555 ((s->fe->options & PR_O_HTTP_MODE) != (s->be->options & PR_O_HTTP_MODE))) {
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3556 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3557
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame^]3558 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_KAL ||
3559 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_KAL ||
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3560 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3561 tmp = TX_CON_WANT_KAL;
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame^]3562
3563 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL ||
3564 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_SCL)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3565 tmp = TX_CON_WANT_SCL;
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame^]3566
3567 if ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL ||
3568 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_FCL)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3569 tmp = TX_CON_WANT_CLO;
3570
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame^]3571 /* option httpclose + anything other than tunnel => close */
3572 if (tmp != TX_CON_WANT_TUN &&
3573 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
3574 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))
3575 tmp = TX_CON_WANT_CLO;
3576
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3577 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3578 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3579
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3580 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3581 /* parse the Connection header and possibly clean it */
3582 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3583 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3584 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3585 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3586 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3587 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3588 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3589 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3590 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3591
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3592 /* check if client or config asks for explicit close in KAL/SCL */
3593 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3594 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3595 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3596 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3597 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3598 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3599 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3600 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3601
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3602 /* we can be blocked here because the request needs to be authenticated,
3603 * either to pass or to access stats.
3604 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3605 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_AUTH) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]3606 char *realm = http_req_last_rule->arg.auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3607
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3608 if (!realm)
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3609 realm = (objt_applet(s->target) == &http_stats_applet) ? STATS_DEFAULT_REALM : px->id;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3610
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3611 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]3612 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3613 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3614 /* on 401 we still count one error, because normal browsing
3615 * won't significantly increase the counter but brute force
3616 * attempts will.
3617 */
3618 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3619 goto return_prx_cond;
3620 }
3621
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3622 /* add request headers from the rule sets in the same order */
3623 list_for_each_entry(wl, &px->req_add, list) {
3624 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3625 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]3626 ret = acl_pass(ret);
3627 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3628 ret = !ret;
3629 if (!ret)
3630 continue;
3631 }
3632
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3633 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3634 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3635 }
3636
3637 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_REDIR) {
3638 if (!http_apply_redirect_rule(http_req_last_rule->arg.redir, s, txn))
3639 goto return_bad_req;
3640 req->analyse_exp = TICK_ETERNITY;
3641 return 1;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3642 }
3643
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3644 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3645 /* process the stats request now */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3646 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3647 s->fe->fe_counters.intercepted_req++;
3648
3649 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3650 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
3651 if (!(s->flags & SN_FINST_MASK))
3652 s->flags |= SN_FINST_R;
3653
3654 req->analyse_exp = TICK_ETERNITY;
Willy Tarreau51437d22013-12-29 00:43:40 +0100[diff] [blame]3655 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3656 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3657 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3658
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3659 /* check whether we have some ACLs set to redirect this request */
3660 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3661 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3662 int ret;
3663
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3664 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]3665 ret = acl_pass(ret);
3666 if (rule->cond->pol == ACL_COND_UNLESS)
3667 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3668 if (!ret)
3669 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3670 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3671 if (!http_apply_redirect_rule(rule, s, txn))
3672 goto return_bad_req;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3673
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3674 req->analyse_exp = TICK_ETERNITY;
3675 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3676 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3677
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3678 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3679 * If this happens, then the data will not come immediately, so we must
3680 * send all what we have without waiting. Note that due to the small gain
3681 * 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]3682 * 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]3683 * itself once used.
3684 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3685 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3686
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3687 /* that's OK for us now, let's move on to next analysers */
3688 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3689
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3690 return_bad_req:
3691 /* We centralize bad requests processing here */
3692 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3693 /* we detected a parsing error. We want to archive this request
3694 * in the dedicated proxy area for later troubleshooting.
3695 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3696 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]3697 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3698
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3699 txn->req.msg_state = HTTP_MSG_ERROR;
3700 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3701 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3702
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3703 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3704 if (s->listener->counters)
3705 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3706
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3707 return_prx_cond:
3708 if (!(s->flags & SN_ERR_MASK))
3709 s->flags |= SN_ERR_PRXCOND;
3710 if (!(s->flags & SN_FINST_MASK))
3711 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3712
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3713 req->analysers = 0;
3714 req->analyse_exp = TICK_ETERNITY;
3715 return 0;
3716}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3717
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3718/* This function performs all the processing enabled for the current request.
3719 * It returns 1 if the processing can continue on next analysers, or zero if it
3720 * needs more data, encounters an error, or wants to immediately abort the
3721 * request. It relies on buffers flags, and updates s->req->analysers.
3722 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3723int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3724{
3725 struct http_txn *txn = &s->txn;
3726 struct http_msg *msg = &txn->req;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3727 struct connection *cli_conn = objt_conn(req->prod->end);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3728
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3729 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3730 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3731 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3732 return 0;
3733 }
3734
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3735 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]3736 now_ms, __FUNCTION__,
3737 s,
3738 req,
3739 req->rex, req->wex,
3740 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3741 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3742 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3743
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3744 if (s->fe->comp || s->be->comp)
3745 select_compression_request_header(s, req->buf);
3746
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3747 /*
3748 * Right now, we know that we have processed the entire headers
3749 * and that unwanted requests have been filtered out. We can do
3750 * whatever we want with the remaining request. Also, now we
3751 * may have separate values for ->fe, ->be.
3752 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3753
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3754 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3755 * If HTTP PROXY is set we simply get remote server address parsing
3756 * incoming request. Note that this requires that a connection is
3757 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3758 */
3759 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3760 struct connection *conn;
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]3761 char *path;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3762
Willy Tarreau9471b8c2013-12-15 13:31:35 +0100[diff] [blame]3763 /* Note that for now we don't reuse existing proxy connections */
3764 if (unlikely((conn = si_alloc_conn(req->cons, 0)) == NULL)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3765 txn->req.msg_state = HTTP_MSG_ERROR;
3766 txn->status = 500;
3767 req->analysers = 0;
3768 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
3769
3770 if (!(s->flags & SN_ERR_MASK))
3771 s->flags |= SN_ERR_RESOURCE;
3772 if (!(s->flags & SN_FINST_MASK))
3773 s->flags |= SN_FINST_R;
3774
3775 return 0;
3776 }
Willy Tarreaue8df1e12013-12-16 14:30:55 +0100[diff] [blame]3777
3778 path = http_get_path(txn);
3779 url2sa(req->buf->p + msg->sl.rq.u,
3780 path ? path - (req->buf->p + msg->sl.rq.u) : msg->sl.rq.u_l,
3781 &conn->addr.to);
3782 /* if the path was found, we have to remove everything between
3783 * req->buf->p + msg->sl.rq.u and path (excluded). If it was not
3784 * found, we need to replace from req->buf->p + msg->sl.rq.u for
3785 * u_l characters by a single "/".
3786 */
3787 if (path) {
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, path, NULL, 0);
3793 http_msg_move_end(&txn->req, delta);
3794 cur_end += delta;
3795 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
3796 goto return_bad_req;
3797 }
3798 else {
3799 char *cur_ptr = req->buf->p;
3800 char *cur_end = cur_ptr + txn->req.sl.rq.l;
3801 int delta;
3802
3803 delta = buffer_replace2(req->buf, req->buf->p + msg->sl.rq.u,
3804 req->buf->p + msg->sl.rq.u + msg->sl.rq.u_l, "/", 1);
3805 http_msg_move_end(&txn->req, delta);
3806 cur_end += delta;
3807 if (http_parse_reqline(&txn->req, HTTP_MSG_RQMETH, cur_ptr, cur_end + 1, NULL, NULL) == NULL)
3808 goto return_bad_req;
3809 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3810 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3811
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3812 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3813 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3814 * Note that doing so might move headers in the request, but
3815 * the fields will stay coherent and the URI will not move.
3816 * This should only be performed in the backend.
3817 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3818 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3819 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3820 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3821
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3822 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3823 * 8: the appsession cookie was looked up very early in 1.2,
3824 * so let's do the same now.
3825 */
3826
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3827 /* It needs to look into the URI unless persistence must be ignored */
3828 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3829 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]3830 }
3831
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3832 /* add unique-id if "header-unique-id" is specified */
3833
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]3834 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
3835 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
3836 goto return_bad_req;
3837 s->unique_id[0] = '\0';
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3838 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]3839 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3840
3841 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3842 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3843 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3844 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3845 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]3846 goto return_bad_req;
3847 }
3848
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3849 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3850 * 9: add X-Forwarded-For if either the frontend or the backend
3851 * asks for it.
3852 */
3853 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3854 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3855 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3856 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3857 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]3858 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3859 /* The header is set to be added only if none is present
3860 * and we found it, so don't do anything.
3861 */
3862 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3863 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3864 /* Add an X-Forwarded-For header unless the source IP is
3865 * in the 'except' network range.
3866 */
3867 if ((!s->fe->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3868 (((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]3869 != s->fe->except_net.s_addr) &&
3870 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3871 (((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]3872 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3873 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3874 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3875 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3876
3877 /* Note: we rely on the backend to get the header name to be used for
3878 * x-forwarded-for, because the header is really meant for the backends.
3879 * However, if the backend did not specify any option, we have to rely
3880 * on the frontend's header name.
3881 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3882 if (s->be->fwdfor_hdr_len) {
3883 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3884 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3885 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3886 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3887 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3888 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3889 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]3890
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3891 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]3892 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3893 }
3894 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3895 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3896 /* FIXME: for the sake of completeness, we should also support
3897 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3898 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3899 int len;
3900 char pn[INET6_ADDRSTRLEN];
3901 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3902 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3903 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3904
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3905 /* Note: we rely on the backend to get the header name to be used for
3906 * x-forwarded-for, because the header is really meant for the backends.
3907 * However, if the backend did not specify any option, we have to rely
3908 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3909 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3910 if (s->be->fwdfor_hdr_len) {
3911 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3912 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3913 } else {
3914 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3915 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3916 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3917 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3918
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3919 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]3920 goto return_bad_req;
3921 }
3922 }
3923
3924 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3925 * 10: add X-Original-To if either the frontend or the backend
3926 * asks for it.
3927 */
3928 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3929
3930 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3931 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3932 /* Add an X-Original-To header unless the destination IP is
3933 * in the 'except' network range.
3934 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3935 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3936
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3937 if (cli_conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3938 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3939 (((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]3940 != s->fe->except_to.s_addr) &&
3941 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3942 (((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]3943 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3944 int len;
3945 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3946 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3947
3948 /* Note: we rely on the backend to get the header name to be used for
3949 * x-original-to, because the header is really meant for the backends.
3950 * However, if the backend did not specify any option, we have to rely
3951 * on the frontend's header name.
3952 */
3953 if (s->be->orgto_hdr_len) {
3954 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3955 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3956 } else {
3957 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3958 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3959 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3960 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]3961
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3962 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]3963 goto return_bad_req;
3964 }
3965 }
3966 }
3967
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3968 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3969 * If an "Upgrade" token is found, the header is left untouched in order not to have
3970 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3971 * "Upgrade" is present in the Connection header.
3972 */
3973 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3974 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame^]3975 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
3976 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3977 unsigned int want_flags = 0;
3978
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3979 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3980 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame^]3981 ((s->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
3982 (s->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL)) &&
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3983 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3984 want_flags |= TX_CON_CLO_SET;
3985 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3986 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame^]3987 ((s->fe->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL &&
3988 (s->be->options & PR_O_HTTP_MODE) != PR_O_HTTP_PCL)) ||
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3989 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3990 want_flags |= TX_CON_KAL_SET;
3991 }
3992
3993 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3994 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3995 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3996
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3997
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3998 /* If we have no server assigned yet and we're balancing on url_param
3999 * with a POST request, we may be interested in checking the body for
4000 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4001 */
4002 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
4003 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4004 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4005 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4006 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4007 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4008 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4009
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4010 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4011 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4012#ifdef TCP_QUICKACK
4013 /* We expect some data from the client. Unless we know for sure
4014 * we already have a full request, we have to re-enable quick-ack
4015 * in case we previously disabled it, otherwise we might cause
4016 * the client to delay further data.
4017 */
4018 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreau3c728722014-01-23 13:50:42 +0100[diff] [blame]4019 cli_conn && conn_ctrl_ready(cli_conn) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4020 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4021 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]4022 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]4023#endif
4024 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]4025
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4026 /*************************************************************
4027 * OK, that's finished for the headers. We have done what we *
4028 * could. Let's switch to the DATA state. *
4029 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4030 req->analyse_exp = TICK_ETERNITY;
4031 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]4032
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4033 /* if the server closes the connection, we want to immediately react
4034 * and close the socket to save packets and syscalls.
4035 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4036 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
4037 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4038
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4039 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4040 /* OK let's go on with the BODY now */
4041 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]4042
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4043 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4044 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]4045 /* we detected a parsing error. We want to archive this request
4046 * in the dedicated proxy area for later troubleshooting.
4047 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4048 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]4049 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]4050
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4051 txn->req.msg_state = HTTP_MSG_ERROR;
4052 txn->status = 400;
4053 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4054 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4055
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4056 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4057 if (s->listener->counters)
4058 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4059
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4060 if (!(s->flags & SN_ERR_MASK))
4061 s->flags |= SN_ERR_PRXCOND;
4062 if (!(s->flags & SN_FINST_MASK))
4063 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4064 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4065}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4066
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4067/* This function is an analyser which processes the HTTP tarpit. It always
4068 * returns zero, at the beginning because it prevents any other processing
4069 * from occurring, and at the end because it terminates the request.
4070 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4071int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4072{
4073 struct http_txn *txn = &s->txn;
4074
4075 /* This connection is being tarpitted. The CLIENT side has
4076 * already set the connect expiration date to the right
4077 * timeout. We just have to check that the client is still
4078 * there and that the timeout has not expired.
4079 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4080 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4081 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4082 !tick_is_expired(req->analyse_exp, now_ms))
4083 return 0;
4084
4085 /* We will set the queue timer to the time spent, just for
4086 * logging purposes. We fake a 500 server error, so that the
4087 * attacker will not suspect his connection has been tarpitted.
4088 * It will not cause trouble to the logs because we can exclude
4089 * the tarpitted connections by filtering on the 'PT' status flags.
4090 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4091 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4092
4093 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4094 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4095 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4096
4097 req->analysers = 0;
4098 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4099
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4100 if (!(s->flags & SN_ERR_MASK))
4101 s->flags |= SN_ERR_PRXCOND;
4102 if (!(s->flags & SN_FINST_MASK))
4103 s->flags |= SN_FINST_T;
4104 return 0;
4105}
4106
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4107/* This function is an analyser which processes the HTTP request body. It looks
4108 * for parameters to be used for the load balancing algorithm (url_param). It
4109 * must only be called after the standard HTTP request processing has occurred,
4110 * because it expects the request to be parsed. It returns zero if it needs to
4111 * read more data, or 1 once it has completed its analysis.
4112 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4113int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4114{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4115 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4116 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4117 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4118
4119 /* We have to parse the HTTP request body to find any required data.
4120 * "balance url_param check_post" should have been the only way to get
4121 * into this. We were brought here after HTTP header analysis, so all
4122 * related structures are ready.
4123 */
4124
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4125 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4126 goto missing_data;
4127
4128 if (msg->msg_state < HTTP_MSG_100_SENT) {
4129 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4130 * send an HTTP/1.1 100 Continue intermediate response.
4131 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4132 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4133 struct hdr_ctx ctx;
4134 ctx.idx = 0;
4135 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4136 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4137 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4138 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4139 }
4140 }
4141 msg->msg_state = HTTP_MSG_100_SENT;
4142 }
4143
4144 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4145 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4146 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4147 * is still null. We must save the body in msg->next because it
4148 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4149 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4150 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4151
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4152 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4153 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4154 else
4155 msg->msg_state = HTTP_MSG_DATA;
4156 }
4157
4158 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4159 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4160 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4161 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4162 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4163 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4164
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4165 if (!ret)
4166 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4167 else if (ret < 0) {
4168 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4169 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4170 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4171 }
4172
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4173 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4174 * We have the first data byte is in msg->sov. We're waiting for at
4175 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4176 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4177
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4178 if (msg->body_len < limit)
4179 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4180
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4181 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4182 goto http_end;
4183
4184 missing_data:
4185 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4186 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4187 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4188 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4189 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4190
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4191 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4192 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4193 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4194
4195 if (!(s->flags & SN_ERR_MASK))
4196 s->flags |= SN_ERR_CLITO;
4197 if (!(s->flags & SN_FINST_MASK))
4198 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4199 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4200 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4201
4202 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4203 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]4204 /* Not enough data. We'll re-use the http-request
4205 * timeout here. Ideally, we should set the timeout
4206 * relative to the accept() date. We just set the
4207 * request timeout once at the beginning of the
4208 * request.
4209 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4210 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4211 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4212 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4213 return 0;
4214 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4215
4216 http_end:
4217 /* The situation will not evolve, so let's give up on the analysis. */
4218 s->logs.tv_request = now; /* update the request timer to reflect full request */
4219 req->analysers &= ~an_bit;
4220 req->analyse_exp = TICK_ETERNITY;
4221 return 1;
4222
4223 return_bad_req: /* let's centralize all bad requests */
4224 txn->req.msg_state = HTTP_MSG_ERROR;
4225 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4226 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4227
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4228 if (!(s->flags & SN_ERR_MASK))
4229 s->flags |= SN_ERR_PRXCOND;
4230 if (!(s->flags & SN_FINST_MASK))
4231 s->flags |= SN_FINST_R;
4232
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4233 return_err_msg:
4234 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4235 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4236 if (s->listener->counters)
4237 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4238 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4239}
4240
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4241/* send a server's name with an outgoing request over an established connection.
4242 * Note: this function is designed to be called once the request has been scheduled
4243 * for being forwarded. This is the reason why it rewinds the buffer before
4244 * proceeding.
4245 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4246int 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]4247
4248 struct hdr_ctx ctx;
4249
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4250 char *hdr_name = be->server_id_hdr_name;
4251 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4252 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4253 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4254 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4255
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4256 ctx.idx = 0;
4257
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4258 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4259 if (old_o) {
4260 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4261 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4262 }
4263
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4264 old_i = chn->buf->i;
4265 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]4266 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4267 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4268 }
4269
4270 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4271 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4272 memcpy(hdr_val, hdr_name, hdr_name_len);
4273 hdr_val += hdr_name_len;
4274 *hdr_val++ = ':';
4275 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4276 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4277 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]4278
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4279 if (old_o) {
4280 /* If this was a forwarded request, we must readjust the amount of
4281 * data to be forwarded in order to take into account the size
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4282 * variations. Note that if the request was already scheduled for
4283 * forwarding, it had its req->sol pointing to the body, which
4284 * must then be updated too.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4285 */
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4286 txn->req.sol += chn->buf->i - old_i;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4287 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4288 }
4289
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4290 return 0;
4291}
4292
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4293/* Terminate current transaction and prepare a new one. This is very tricky
4294 * right now but it works.
4295 */
4296void http_end_txn_clean_session(struct session *s)
4297{
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4298 int prev_status = s->txn.status;
4299
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4300 /* FIXME: We need a more portable way of releasing a backend's and a
4301 * server's connections. We need a safer way to reinitialize buffer
4302 * flags. We also need a more accurate method for computing per-request
4303 * data.
4304 */
4305 http_silent_debug(__LINE__, s);
4306
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4307 /* unless we're doing keep-alive, we want to quickly close the connection
4308 * to the server.
4309 */
4310 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4311 !si_conn_ready(s->req->cons)) {
4312 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
4313 si_shutr(s->req->cons);
4314 si_shutw(s->req->cons);
4315 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4316
4317 http_silent_debug(__LINE__, s);
4318
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4319 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4320 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4321 if (unlikely(s->srv_conn))
4322 sess_change_server(s, NULL);
4323 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4324
4325 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4326 session_process_counters(s);
Willy Tarreauf3338342014-01-28 21:40:28 +0100[diff] [blame]4327 session_stop_content_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4328
4329 if (s->txn.status) {
4330 int n;
4331
4332 n = s->txn.status / 100;
4333 if (n < 1 || n > 5)
4334 n = 0;
4335
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4336 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4337 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4338 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4339 s->fe->fe_counters.p.http.comp_rsp++;
4340 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4341 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4342 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4343 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4344 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4345 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4346 s->be->be_counters.p.http.comp_rsp++;
4347 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4348 }
4349
4350 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4351 s->logs.bytes_in -= s->req->buf->i;
4352 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4353
4354 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4355 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4356 !(s->flags & SN_MONITOR) &&
4357 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4358 s->do_log(s);
4359 }
4360
4361 s->logs.accept_date = date; /* user-visible date for logging */
4362 s->logs.tv_accept = now; /* corrected date for internal use */
4363 tv_zero(&s->logs.tv_request);
4364 s->logs.t_queue = -1;
4365 s->logs.t_connect = -1;
4366 s->logs.t_data = -1;
4367 s->logs.t_close = 0;
4368 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4369 s->logs.srv_queue_size = 0; /* we will get this number soon */
4370
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4371 s->logs.bytes_in = s->req->total = s->req->buf->i;
4372 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4373
4374 if (s->pend_pos)
4375 pendconn_free(s->pend_pos);
4376
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4377 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4378 if (s->flags & SN_CURR_SESS) {
4379 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4380 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4381 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4382 if (may_dequeue_tasks(objt_server(s->target), s->be))
4383 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4384 }
4385
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4386 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4387
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4388 /* only release our endpoint if we don't intend to reuse the
4389 * connection.
4390 */
4391 if (((s->txn.flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) ||
4392 !si_conn_ready(s->req->cons)) {
4393 si_release_endpoint(s->req->cons);
4394 }
4395
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4396 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4397 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4398 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4399 s->req->cons->exp = TICK_ETERNITY;
Willy Tarreauc9200962013-12-31 23:03:09 +0100[diff] [blame]4400 s->req->cons->flags &= SI_FL_DONT_WAKE; /* we're in the context of process_session */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4401 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4402 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]4403 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]4404 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4405
4406 if (s->flags & SN_COMP_READY)
4407 s->comp_algo->end(&s->comp_ctx);
4408 s->comp_algo = NULL;
4409 s->flags &= ~SN_COMP_READY;
4410
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4411 s->txn.meth = 0;
4412 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4413 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreau068621e2013-12-23 15:11:25 +0100[diff] [blame]4414
4415 if (prev_status == 401 || prev_status == 407) {
4416 /* In HTTP keep-alive mode, if we receive a 401, we still have
4417 * a chance of being able to send the visitor again to the same
4418 * server over the same connection. This is required by some
4419 * broken protocols such as NTLM, and anyway whenever there is
4420 * an opportunity for sending the challenge to the proper place,
4421 * it's better to do it (at least it helps with debugging).
4422 */
4423 s->txn.flags |= TX_PREFER_LAST;
4424 }
4425
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4426 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4427 s->req->cons->flags |= SI_FL_INDEP_STR;
4428
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4429 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4430 s->req->flags |= CF_NEVER_WAIT;
4431 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4432 }
4433
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4434 /* if the request buffer is not empty, it means we're
4435 * about to process another request, so send pending
4436 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4437 * Just don't do this if the buffer is close to be full,
4438 * because the request will wait for it to flush a little
4439 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4440 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4441 if (s->req->buf->i) {
4442 if (s->rep->buf->o &&
4443 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4444 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]4445 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4446 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4447
4448 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4449 channel_auto_read(s->req);
4450 channel_auto_close(s->req);
4451 channel_auto_read(s->rep);
4452 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4453
Willy Tarreau27375622013-12-17 00:00:28 +0100[diff] [blame]4454 /* we're in keep-alive with an idle connection, monitor it */
4455 si_idle_conn(s->req->cons);
4456
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4457 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4458 s->rep->analysers = 0;
4459
4460 http_silent_debug(__LINE__, s);
4461}
4462
4463
4464/* This function updates the request state machine according to the response
4465 * state machine and buffer flags. It returns 1 if it changes anything (flag
4466 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4467 * it is only used to find when a request/response couple is complete. Both
4468 * this function and its equivalent should loop until both return zero. It
4469 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4470 */
4471int http_sync_req_state(struct session *s)
4472{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4473 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4474 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4475 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4476 unsigned int old_state = txn->req.msg_state;
4477
4478 http_silent_debug(__LINE__, s);
4479 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4480 return 0;
4481
4482 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4483 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4484 * We can shut the read side unless we want to abort_on_close,
4485 * or we have a POST request. The issue with POST requests is
4486 * that some browsers still send a CRLF after the request, and
4487 * this CRLF must be read so that it does not remain in the kernel
4488 * buffers, otherwise a close could cause an RST on some systems
4489 * (eg: Linux).
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4490 * Note that if we're using keep-alive on the client side, we'd
4491 * rather poll now and keep the polling enabled for the whole
4492 * session's life than enabling/disabling it between each
4493 * response and next request.
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4494 */
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4495 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
4496 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
4497 !(s->be->options & PR_O_ABRT_CLOSE) &&
4498 txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4499 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4500
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4501 /* if the server closes the connection, we want to immediately react
4502 * and close the socket to save packets and syscalls.
4503 */
4504 chn->cons->flags |= SI_FL_NOHALF;
4505
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4506 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4507 goto wait_other_side;
4508
4509 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4510 /* The server has not finished to respond, so we
4511 * don't want to move in order not to upset it.
4512 */
4513 goto wait_other_side;
4514 }
4515
4516 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4517 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4518 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4519 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4520 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4521 goto wait_other_side;
4522 }
4523
4524 /* When we get here, it means that both the request and the
4525 * response have finished receiving. Depending on the connection
4526 * mode, we'll have to wait for the last bytes to leave in either
4527 * direction, and sometimes for a close to be effective.
4528 */
4529
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4530 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4531 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4532 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4533 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4534 }
4535 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4536 /* Option forceclose is set, or either side wants to close,
4537 * let's enforce it now that we're not expecting any new
4538 * data to come. The caller knows the session is complete
4539 * once both states are CLOSED.
4540 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4541 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4542 channel_shutr_now(chn);
4543 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4544 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4545 }
4546 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4547 /* The last possible modes are keep-alive and tunnel. Tunnel mode
4548 * will not have any analyser so it needs to poll for reads.
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4549 */
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4550 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN) {
4551 channel_auto_read(chn);
4552 txn->req.msg_state = HTTP_MSG_TUNNEL;
4553 chn->flags |= CF_NEVER_WAIT;
4554 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4555 }
4556
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4557 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4558 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4559 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4560
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4561 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4562 txn->req.msg_state = HTTP_MSG_CLOSING;
4563 goto http_msg_closing;
4564 }
4565 else {
4566 txn->req.msg_state = HTTP_MSG_CLOSED;
4567 goto http_msg_closed;
4568 }
4569 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4570 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4571 }
4572
4573 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4574 http_msg_closing:
4575 /* nothing else to forward, just waiting for the output buffer
4576 * to be empty and for the shutw_now to take effect.
4577 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4578 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4579 txn->req.msg_state = HTTP_MSG_CLOSED;
4580 goto http_msg_closed;
4581 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4582 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4583 txn->req.msg_state = HTTP_MSG_ERROR;
4584 goto wait_other_side;
4585 }
4586 }
4587
4588 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4589 http_msg_closed:
Willy Tarreau3988d932013-12-27 23:03:08 +0100[diff] [blame]4590 /* see above in MSG_DONE why we only do this in these states */
4591 if (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_SCL) &&
4592 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_KAL) &&
4593 !(s->be->options & PR_O_ABRT_CLOSE))
Willy Tarreau2e7a1652013-12-15 15:32:10 +0100[diff] [blame]4594 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4595 goto wait_other_side;
4596 }
4597
4598 wait_other_side:
4599 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4600 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4601}
4602
4603
4604/* This function updates the response state machine according to the request
4605 * state machine and buffer flags. It returns 1 if it changes anything (flag
4606 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4607 * it is only used to find when a request/response couple is complete. Both
4608 * this function and its equivalent should loop until both return zero. It
4609 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4610 */
4611int http_sync_res_state(struct session *s)
4612{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4613 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4614 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4615 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4616 unsigned int old_state = txn->rsp.msg_state;
4617
4618 http_silent_debug(__LINE__, s);
4619 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4620 return 0;
4621
4622 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4623 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4624 * still monitor the server connection for a possible close
4625 * while the request is being uploaded, so we don't disable
4626 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4627 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4628 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4629
4630 if (txn->req.msg_state == HTTP_MSG_ERROR)
4631 goto wait_other_side;
4632
4633 if (txn->req.msg_state < HTTP_MSG_DONE) {
4634 /* The client seems to still be sending data, probably
4635 * because we got an error response during an upload.
4636 * We have the choice of either breaking the connection
4637 * or letting it pass through. Let's do the later.
4638 */
4639 goto wait_other_side;
4640 }
4641
4642 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4643 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4644 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4645 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4646 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4647 goto wait_other_side;
4648 }
4649
4650 /* When we get here, it means that both the request and the
4651 * response have finished receiving. Depending on the connection
4652 * mode, we'll have to wait for the last bytes to leave in either
4653 * direction, and sometimes for a close to be effective.
4654 */
4655
4656 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4657 /* Server-close mode : shut read and wait for the request
4658 * side to close its output buffer. The caller will detect
4659 * when we're in DONE and the other is in CLOSED and will
4660 * catch that for the final cleanup.
4661 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4662 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4663 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4664 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4665 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4666 /* Option forceclose is set, or either side wants to close,
4667 * let's enforce it now that we're not expecting any new
4668 * data to come. The caller knows the session is complete
4669 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4670 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4671 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4672 channel_shutr_now(chn);
4673 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4674 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4675 }
4676 else {
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4677 /* The last possible modes are keep-alive and tunnel. Tunnel will
4678 * need to forward remaining data. Keep-alive will need to monitor
4679 * for connection closing.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4680 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4681 channel_auto_read(chn);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4682 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4683 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
4684 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4685 }
4686
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4687 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4688 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4689 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4690 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4691 goto http_msg_closing;
4692 }
4693 else {
4694 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4695 goto http_msg_closed;
4696 }
4697 }
4698 goto wait_other_side;
4699 }
4700
4701 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4702 http_msg_closing:
4703 /* nothing else to forward, just waiting for the output buffer
4704 * to be empty and for the shutw_now to take effect.
4705 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4706 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4707 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4708 goto http_msg_closed;
4709 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4710 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4711 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4712 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4713 if (objt_server(s->target))
4714 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4715 goto wait_other_side;
4716 }
4717 }
4718
4719 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4720 http_msg_closed:
4721 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4722 bi_erase(chn);
4723 channel_auto_close(chn);
4724 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4725 goto wait_other_side;
4726 }
4727
4728 wait_other_side:
4729 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4730 /* We force the response to leave immediately if we're waiting for the
4731 * other side, since there is no pending shutdown to push it out.
4732 */
4733 if (!channel_is_empty(chn))
4734 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4735 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4736}
4737
4738
4739/* Resync the request and response state machines. Return 1 if either state
4740 * changes.
4741 */
4742int http_resync_states(struct session *s)
4743{
4744 struct http_txn *txn = &s->txn;
4745 int old_req_state = txn->req.msg_state;
4746 int old_res_state = txn->rsp.msg_state;
4747
4748 http_silent_debug(__LINE__, s);
4749 http_sync_req_state(s);
4750 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4751 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4752 if (!http_sync_res_state(s))
4753 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4754 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4755 if (!http_sync_req_state(s))
4756 break;
4757 }
4758 http_silent_debug(__LINE__, s);
4759 /* OK, both state machines agree on a compatible state.
4760 * There are a few cases we're interested in :
4761 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4762 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4763 * directions, so let's simply disable both analysers.
4764 * - HTTP_MSG_CLOSED on the response only means we must abort the
4765 * request.
4766 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4767 * with server-close mode means we've completed one request and we
4768 * must re-initialize the server connection.
4769 */
4770
4771 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4772 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4773 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4774 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4775 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4776 channel_auto_close(s->req);
4777 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4778 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4779 channel_auto_close(s->rep);
4780 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4781 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4782 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
4783 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4784 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4785 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4786 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4787 channel_auto_close(s->rep);
4788 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4789 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4790 channel_abort(s->req);
4791 channel_auto_close(s->req);
4792 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4793 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4794 }
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4795 else if ((txn->req.msg_state == HTTP_MSG_DONE ||
4796 txn->req.msg_state == HTTP_MSG_CLOSED) &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4797 txn->rsp.msg_state == HTTP_MSG_DONE &&
Willy Tarreau4213a112013-12-15 10:25:42 +0100[diff] [blame]4798 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
4799 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
4800 /* server-close/keep-alive: terminate this transaction,
4801 * possibly killing the server connection and reinitialize
4802 * a fresh-new transaction.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4803 */
4804 http_end_txn_clean_session(s);
4805 }
4806
4807 http_silent_debug(__LINE__, s);
4808 return txn->req.msg_state != old_req_state ||
4809 txn->rsp.msg_state != old_res_state;
4810}
4811
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4812/* This function is an analyser which forwards request body (including chunk
4813 * sizes if any). It is called as soon as we must forward, even if we forward
4814 * zero byte. The only situation where it must not be called is when we're in
4815 * tunnel mode and we want to forward till the close. It's used both to forward
4816 * remaining data and to resync after end of body. It expects the msg_state to
4817 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4818 * 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]4819 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4820 * bytes of pending data + the headers if not already done (between sol and sov).
4821 * 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]4822 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4823int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4824{
4825 struct http_txn *txn = &s->txn;
4826 struct http_msg *msg = &s->txn.req;
4827
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4828 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4829 return 0;
4830
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4831 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]4832 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4833 /* Output closed while we were sending data. We must abort and
4834 * wake the other side up.
4835 */
4836 msg->msg_state = HTTP_MSG_ERROR;
4837 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4838 return 1;
4839 }
4840
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4841 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4842 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4843
4844 /* Note that we don't have to send 100-continue back because we don't
4845 * need the data to complete our job, and it's up to the server to
4846 * decide whether to return 100, 417 or anything else in return of
4847 * an "Expect: 100-continue" header.
4848 */
4849
4850 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4851 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4852 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4853 * is still null. We must save the body in msg->next because it
4854 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4855 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4856 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4857
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4858 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4859 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4860 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4861 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4862 }
4863
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4864 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4865 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4866
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4867 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4868 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4869 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4870 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4871 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4872 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4873 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4874 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4875 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4876
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4877 if (msg->msg_state == HTTP_MSG_DATA) {
4878 /* must still forward */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]4879 if (req->to_forward) {
4880 req->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4881 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]4882 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4883
4884 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4885 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4886 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4887 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4888 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4889 }
4890 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4891 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4892 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4893 * TRAILERS state.
4894 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4895 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4896
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4897 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4898 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4899 else if (ret < 0) {
4900 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4901 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4902 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]4903 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4904 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4905 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4906 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4907 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4908 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4909 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4910
4911 if (ret == 0)
4912 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4913 else if (ret < 0) {
4914 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4915 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4916 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]4917 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4918 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4919 /* we're in MSG_CHUNK_SIZE now */
4920 }
4921 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4922 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4923
4924 if (ret == 0)
4925 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4926 else if (ret < 0) {
4927 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4928 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4929 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]4930 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4931 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4932 /* we're in HTTP_MSG_DONE now */
4933 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4934 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4935 int old_state = msg->msg_state;
4936
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4937 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4938 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4939 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4940 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4941 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4942 if (http_resync_states(s)) {
4943 /* some state changes occurred, maybe the analyser
4944 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4945 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4946 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4947 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4948 /* request errors are most likely due to
4949 * the server aborting the transfer.
4950 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4951 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4952 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4953 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4954 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4955 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4956 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4957 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4958 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4959
4960 /* If "option abortonclose" is set on the backend, we
4961 * want to monitor the client's connection and forward
4962 * any shutdown notification to the server, which will
4963 * decide whether to close or to go on processing the
4964 * request.
4965 */
4966 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4967 channel_auto_read(req);
4968 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4969 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4970 else if (s->txn.meth == HTTP_METH_POST) {
4971 /* POST requests may require to read extra CRLF
4972 * sent by broken browsers and which could cause
4973 * an RST to be sent upon close on some systems
4974 * (eg: Linux).
4975 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4976 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4977 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4978
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4979 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4980 }
4981 }
4982
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4983 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4984 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4985 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4986 if (!(s->flags & SN_ERR_MASK))
4987 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4988 if (!(s->flags & SN_FINST_MASK)) {
4989 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4990 s->flags |= SN_FINST_H;
4991 else
4992 s->flags |= SN_FINST_D;
4993 }
4994
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4995 s->fe->fe_counters.cli_aborts++;
4996 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4997 if (objt_server(s->target))
4998 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4999
5000 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]5001 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5002
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5003 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5004 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5005 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5006
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5007 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5008 * 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]5009 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5010 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5011 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5012
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5013 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5014 * 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]5015 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]5016 * modes are already handled by the stream sock layer. We must not do
5017 * this in content-length mode because it could present the MSG_MORE
5018 * flag with the last block of forwarded data, which would cause an
5019 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5020 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5021 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5022 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]5023
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5024 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5025 return 0;
5026
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5027 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5028 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5029 if (s->listener->counters)
5030 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5031 return_bad_req_stats_ok:
5032 txn->req.msg_state = HTTP_MSG_ERROR;
5033 if (txn->status) {
5034 /* Note: we don't send any error if some data were already sent */
5035 stream_int_retnclose(req->prod, NULL);
5036 } else {
5037 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5038 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5039 }
5040 req->analysers = 0;
5041 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]5042
5043 if (!(s->flags & SN_ERR_MASK))
5044 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5045 if (!(s->flags & SN_FINST_MASK)) {
5046 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5047 s->flags |= SN_FINST_H;
5048 else
5049 s->flags |= SN_FINST_D;
5050 }
5051 return 0;
5052
5053 aborted_xfer:
5054 txn->req.msg_state = HTTP_MSG_ERROR;
5055 if (txn->status) {
5056 /* Note: we don't send any error if some data were already sent */
5057 stream_int_retnclose(req->prod, NULL);
5058 } else {
5059 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5060 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5061 }
5062 req->analysers = 0;
5063 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
5064
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5065 s->fe->fe_counters.srv_aborts++;
5066 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5067 if (objt_server(s->target))
5068 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]5069
5070 if (!(s->flags & SN_ERR_MASK))
5071 s->flags |= SN_ERR_SRVCL;
5072 if (!(s->flags & SN_FINST_MASK)) {
5073 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
5074 s->flags |= SN_FINST_H;
5075 else
5076 s->flags |= SN_FINST_D;
5077 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5078 return 0;
5079}
5080
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5081/* This stream analyser waits for a complete HTTP response. It returns 1 if the
5082 * processing can continue on next analysers, or zero if it either needs more
5083 * data or wants to immediately abort the response (eg: timeout, error, ...). It
5084 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
5085 * when it has nothing left to do, and may remove any analyser when it wants to
5086 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5087 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5088int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]5089{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5090 struct http_txn *txn = &s->txn;
5091 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5092 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5093 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5094 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5095 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]5096
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5097 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]5098 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5099 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5100 rep,
5101 rep->rex, rep->wex,
5102 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5103 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]5104 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]5105
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5106 /*
5107 * Now parse the partial (or complete) lines.
5108 * We will check the response syntax, and also join multi-line
5109 * headers. An index of all the lines will be elaborated while
5110 * parsing.
5111 *
5112 * For the parsing, we use a 28 states FSM.
5113 *
5114 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5115 * rep->buf->p = beginning of response
5116 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5117 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5118 * msg->eol = end of current header or line (LF or CRLF)
5119 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5120 */
5121
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5122 /* There's a protected area at the end of the buffer for rewriting
5123 * purposes. We don't want to start to parse the request if the
5124 * protected area is affected, because we may have to move processed
5125 * data later, which is much more complicated.
5126 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5127 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5128 if (unlikely(!channel_reserved(rep))) {
5129 /* some data has still not left the buffer, wake us once that's done */
5130 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5131 goto abort_response;
5132 channel_dont_close(rep);
5133 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaud7ad9f52013-12-31 17:26:25 +0100[diff] [blame]5134 rep->flags |= CF_WAKE_WRITE;
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5135 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5136 }
5137
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5138 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5139 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5140 buffer_slow_realign(rep->buf);
5141
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5142 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5143 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5144 }
5145
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5146 /* 1: we might have to print this header in debug mode */
5147 if (unlikely((global.mode & MODE_DEBUG) &&
5148 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5149 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5150 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5151
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5152 sol = rep->buf->p;
5153 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5154 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5155
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5156 sol += hdr_idx_first_pos(&txn->hdr_idx);
5157 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5158
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5159 while (cur_idx) {
5160 eol = sol + txn->hdr_idx.v[cur_idx].len;
5161 debug_hdr("srvhdr", s, sol, eol);
5162 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5163 cur_idx = txn->hdr_idx.v[cur_idx].next;
5164 }
5165 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5166
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5167 /*
5168 * Now we quickly check if we have found a full valid response.
5169 * If not so, we check the FD and buffer states before leaving.
5170 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5171 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5172 * responses are checked first.
5173 *
5174 * Depending on whether the client is still there or not, we
5175 * may send an error response back or not. Note that normally
5176 * we should only check for HTTP status there, and check I/O
5177 * errors somewhere else.
5178 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5179
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5180 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5181 /* Invalid response */
5182 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5183 /* we detected a parsing error. We want to archive this response
5184 * in the dedicated proxy area for later troubleshooting.
5185 */
5186 hdr_response_bad:
5187 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5188 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]5189
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5190 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5191 if (objt_server(s->target)) {
5192 objt_server(s->target)->counters.failed_resp++;
5193 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5194 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5195 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5196 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5197 rep->analysers = 0;
5198 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5199 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5200 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5201 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5202
5203 if (!(s->flags & SN_ERR_MASK))
5204 s->flags |= SN_ERR_PRXCOND;
5205 if (!(s->flags & SN_FINST_MASK))
5206 s->flags |= SN_FINST_H;
5207
5208 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5209 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5210
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5211 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5212 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5213 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5214 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5215 goto hdr_response_bad;
5216 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5217
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5218 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5219 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5220 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5221 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5222 else if (txn->flags & TX_NOT_FIRST)
5223 goto abort_keep_alive;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5224
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5225 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5226 if (objt_server(s->target)) {
5227 objt_server(s->target)->counters.failed_resp++;
5228 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5229 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5230
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5231 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5232 rep->analysers = 0;
5233 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5234 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5235 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5236 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5237
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5238 if (!(s->flags & SN_ERR_MASK))
5239 s->flags |= SN_ERR_SRVCL;
5240 if (!(s->flags & SN_FINST_MASK))
5241 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5242 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5243 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5244
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5245 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5246 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5247 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5248 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]5249 else if (txn->flags & TX_NOT_FIRST)
5250 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5251
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5252 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5253 if (objt_server(s->target)) {
5254 objt_server(s->target)->counters.failed_resp++;
5255 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5256 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5257
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5258 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5259 rep->analysers = 0;
5260 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5261 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5262 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5263 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5264
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5265 if (!(s->flags & SN_ERR_MASK))
5266 s->flags |= SN_ERR_SRVTO;
5267 if (!(s->flags & SN_FINST_MASK))
5268 s->flags |= SN_FINST_H;
5269 return 0;
5270 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5271
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5272 /* client abort with an abortonclose */
5273 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5274 s->fe->fe_counters.cli_aborts++;
5275 s->be->be_counters.cli_aborts++;
5276 if (objt_server(s->target))
5277 objt_server(s->target)->counters.cli_aborts++;
5278
5279 rep->analysers = 0;
5280 channel_auto_close(rep);
5281
5282 txn->status = 400;
5283 bi_erase(rep);
5284 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5285
5286 if (!(s->flags & SN_ERR_MASK))
5287 s->flags |= SN_ERR_CLICL;
5288 if (!(s->flags & SN_FINST_MASK))
5289 s->flags |= SN_FINST_H;
5290
5291 /* process_session() will take care of the error */
5292 return 0;
5293 }
5294
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5295 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5296 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5297 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5298 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5299 else if (txn->flags & TX_NOT_FIRST)
5300 goto abort_keep_alive;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5301
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5302 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5303 if (objt_server(s->target)) {
5304 objt_server(s->target)->counters.failed_resp++;
5305 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5306 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5307
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5308 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5309 rep->analysers = 0;
5310 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5311 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5312 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5313 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5314
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5315 if (!(s->flags & SN_ERR_MASK))
5316 s->flags |= SN_ERR_SRVCL;
5317 if (!(s->flags & SN_FINST_MASK))
5318 s->flags |= SN_FINST_H;
5319 return 0;
5320 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5321
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5322 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5323 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5324 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5325 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]5326 else if (txn->flags & TX_NOT_FIRST)
5327 goto abort_keep_alive;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5328
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5329 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5330 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5331 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5332
5333 if (!(s->flags & SN_ERR_MASK))
5334 s->flags |= SN_ERR_CLICL;
5335 if (!(s->flags & SN_FINST_MASK))
5336 s->flags |= SN_FINST_H;
5337
5338 /* process_session() will take care of the error */
5339 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5340 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5341
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5342 channel_dont_close(rep);
Willy Tarreau3f3997e2013-12-15 15:21:32 +0100[diff] [blame]5343 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5344 return 0;
5345 }
5346
5347 /* More interesting part now : we know that we have a complete
5348 * response which at least looks like HTTP. We have an indicator
5349 * of each header's length, so we can parse them quickly.
5350 */
5351
5352 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5353 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]5354
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5355 /*
5356 * 1: get the status code
5357 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5358 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5359 if (n < 1 || n > 5)
5360 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5361 /* when the client triggers a 4xx from the server, it's most often due
5362 * to a missing object or permission. These events should be tracked
5363 * because if they happen often, it may indicate a brute force or a
5364 * vulnerability scan.
5365 */
5366 if (n == 4)
5367 session_inc_http_err_ctr(s);
5368
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5369 if (objt_server(s->target))
5370 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5371
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5372 /* check if the response is HTTP/1.1 or above */
5373 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5374 ((rep->buf->p[5] > '1') ||
5375 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5376 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5377
5378 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5379 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]5380
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5381 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5382 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5383
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5384 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]5385
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5386 /* Adjust server's health based on status code. Note: status codes 501
5387 * and 505 are triggered on demand by client request, so we must not
5388 * count them as server failures.
5389 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5390 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5391 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5392 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5393 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5394 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5395 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5396
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5397 /*
5398 * 2: check for cacheability.
5399 */
5400
5401 switch (txn->status) {
5402 case 200:
5403 case 203:
5404 case 206:
5405 case 300:
5406 case 301:
5407 case 410:
5408 /* RFC2616 @13.4:
5409 * "A response received with a status code of
5410 * 200, 203, 206, 300, 301 or 410 MAY be stored
5411 * by a cache (...) unless a cache-control
5412 * directive prohibits caching."
5413 *
5414 * RFC2616 @9.5: POST method :
5415 * "Responses to this method are not cacheable,
5416 * unless the response includes appropriate
5417 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5418 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5419 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5420 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5421 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5422 break;
5423 default:
5424 break;
5425 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5426
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5427 /*
5428 * 3: we may need to capture headers
5429 */
5430 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5431 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5432 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5433 txn->rsp.cap, s->fe->rsp_cap);
5434
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5435 /* 4: determine the transfer-length.
5436 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5437 * the presence of a message-body in a RESPONSE and its transfer length
5438 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5439 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5440 * All responses to the HEAD request method MUST NOT include a
5441 * message-body, even though the presence of entity-header fields
5442 * might lead one to believe they do. All 1xx (informational), 204
5443 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5444 * message-body. All other responses do include a message-body,
5445 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5446 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5447 * 1. Any response which "MUST NOT" include a message-body (such as the
5448 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5449 * always terminated by the first empty line after the header fields,
5450 * regardless of the entity-header fields present in the message.
5451 *
5452 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5453 * the "chunked" transfer-coding (Section 6.2) is used, the
5454 * transfer-length is defined by the use of this transfer-coding.
5455 * If a Transfer-Encoding header field is present and the "chunked"
5456 * transfer-coding is not present, the transfer-length is defined by
5457 * the sender closing the connection.
5458 *
5459 * 3. If a Content-Length header field is present, its decimal value in
5460 * OCTETs represents both the entity-length and the transfer-length.
5461 * If a message is received with both a Transfer-Encoding header
5462 * field and a Content-Length header field, the latter MUST be ignored.
5463 *
5464 * 4. If the message uses the media type "multipart/byteranges", and
5465 * the transfer-length is not otherwise specified, then this self-
5466 * delimiting media type defines the transfer-length. This media
5467 * type MUST NOT be used unless the sender knows that the recipient
5468 * can parse it; the presence in a request of a Range header with
5469 * multiple byte-range specifiers from a 1.1 client implies that the
5470 * client can parse multipart/byteranges responses.
5471 *
5472 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5473 */
5474
5475 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5476 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5477 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5478 * FIXME: should we parse anyway and return an error on chunked encoding ?
5479 */
5480 if (txn->meth == HTTP_METH_HEAD ||
5481 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5482 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5483 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5484 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5485 goto skip_content_length;
5486 }
5487
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5488 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5489 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5490 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5491 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5492 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5493 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5494 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5495 /* bad transfer-encoding (chunked followed by something else) */
5496 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5497 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5498 break;
5499 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5500 }
5501
5502 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5503 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5504 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5505 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5506 signed long long cl;
5507
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5508 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5509 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5510 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5511 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5512
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5513 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5514 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5515 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5516 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5517
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5518 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5519 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5520 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5521 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5522
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5523 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5524 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5525 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5526 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5527
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5528 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5529 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5530 }
5531
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5532 if (s->fe->comp || s->be->comp)
5533 select_compression_response_header(s, rep->buf);
5534
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5535 /* FIXME: we should also implement the multipart/byterange method.
5536 * For now on, we resort to close mode in this case (unknown length).
5537 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5538skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5539
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5540 /* end of job, return OK */
5541 rep->analysers &= ~an_bit;
5542 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5543 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5544 return 1;
Willy Tarreau6b726ad2013-12-15 19:31:37 +0100[diff] [blame]5545
5546 abort_keep_alive:
5547 /* A keep-alive request to the server failed on a network error.
5548 * The client is required to retry. We need to close without returning
5549 * any other information so that the client retries.
5550 */
5551 txn->status = 0;
5552 rep->analysers = 0;
5553 s->req->analysers = 0;
5554 channel_auto_close(rep);
5555 s->logs.logwait = 0;
5556 s->logs.level = 0;
5557 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
5558 bi_erase(rep);
5559 stream_int_retnclose(rep->cons, NULL);
5560 return 0;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5561}
5562
5563/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5564 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5565 * and updates t->rep->analysers. It might make sense to explode it into several
5566 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5567 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5568int 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]5569{
5570 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5571 struct http_msg *msg = &txn->rsp;
5572 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5573 struct cond_wordlist *wl;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5574 struct http_res_rule *http_res_last_rule = NULL;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5575
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5576 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]5577 now_ms, __FUNCTION__,
5578 t,
5579 rep,
5580 rep->rex, rep->wex,
5581 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5582 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5583 rep->analysers);
5584
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5585 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5586 return 0;
5587
5588 rep->analysers &= ~an_bit;
5589 rep->analyse_exp = TICK_ETERNITY;
5590
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5591 /* Now we have to check if we need to modify the Connection header.
5592 * This is more difficult on the response than it is on the request,
5593 * because we can have two different HTTP versions and we don't know
5594 * how the client will interprete a response. For instance, let's say
5595 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5596 * HTTP/1.1 response without any header. Maybe it will bound itself to
5597 * HTTP/1.0 because it only knows about it, and will consider the lack
5598 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5599 * the lack of header as a keep-alive. Thus we will use two flags
5600 * indicating how a request MAY be understood by the client. In case
5601 * of multiple possibilities, we'll fix the header to be explicit. If
5602 * ambiguous cases such as both close and keepalive are seen, then we
5603 * will fall back to explicit close. Note that we won't take risks with
5604 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5605 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5606 */
5607
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5608 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5609 txn->status == 101)) {
5610 /* Either we've established an explicit tunnel, or we're
5611 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5612 * to understand the next protocols. We have to switch to tunnel
5613 * mode, so that we transfer the request and responses then let
5614 * this protocol pass unmodified. When we later implement specific
5615 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5616 * header which contains information about that protocol for
5617 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5618 */
5619 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5620 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5621 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5622 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame^]5623 ((t->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
5624 (t->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5625 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5626
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5627 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5628 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5629 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5630 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5631
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5632 /* now adjust header transformations depending on current state */
5633 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5634 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5635 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5636 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5637 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5638 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5639 else { /* SCL / KAL */
5640 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5641 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5642 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5643 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5644
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5645 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5646 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5647
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5648 /* Some keep-alive responses are converted to Server-close if
5649 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5650 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5651 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5652 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5653 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5654 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5655 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5656 }
5657
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5658 /* we want to have the response time before we start processing it */
5659 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
5660
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5661 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5662 /*
5663 * 3: we will have to evaluate the filters.
5664 * As opposed to version 1.2, now they will be evaluated in the
5665 * filters order and not in the header order. This means that
5666 * each filter has to be validated among all headers.
5667 *
5668 * Filters are tried with ->be first, then with ->fe if it is
5669 * different from ->be.
5670 */
5671
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5672 cur_proxy = t->be;
5673 while (1) {
5674 struct proxy *rule_set = cur_proxy;
5675
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5676 /* evaluate http-response rules */
5677 if (!http_res_last_rule)
5678 http_res_last_rule = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, t, txn);
5679
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5680 /* try headers filters */
5681 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5682 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5683 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5684 if (objt_server(t->target)) {
5685 objt_server(t->target)->counters.failed_resp++;
5686 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5687 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5688 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5689 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5690 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5691 txn->status = 502;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5692 t->logs.t_data = -1; /* was not a valid response */
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5693 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5694 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5695 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5696 if (!(t->flags & SN_ERR_MASK))
5697 t->flags |= SN_ERR_PRXCOND;
5698 if (!(t->flags & SN_FINST_MASK))
5699 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5700 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5701 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5702 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5703
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5704 /* has the response been denied ? */
5705 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5706 if (objt_server(t->target))
5707 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5708
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5709 t->be->be_counters.denied_resp++;
5710 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5711 if (t->listener->counters)
5712 t->listener->counters->denied_resp++;
5713
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5714 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5715 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5716
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5717 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5718 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5719 if (txn->status < 200)
5720 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5721 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5722 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]5723 ret = acl_pass(ret);
5724 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5725 ret = !ret;
5726 if (!ret)
5727 continue;
5728 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5729 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5730 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5731 }
5732
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5733 /* check whether we're already working on the frontend */
5734 if (cur_proxy == t->fe)
5735 break;
5736 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5737 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5738
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5739 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5740 * We may be facing a 100-continue response, in which case this
5741 * is not the right response, and we're waiting for the next one.
5742 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5743 * next one.
5744 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5745 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5746 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5747 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5748 msg->msg_state = HTTP_MSG_RPBEFORE;
5749 txn->status = 0;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5750 t->logs.t_data = -1; /* was not a response yet */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5751 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5752 return 1;
5753 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5754 else if (unlikely(txn->status < 200))
5755 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5756
5757 /* we don't have any 1xx status code now */
5758
5759 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5760 * 4: check for server cookie.
5761 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5762 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5763 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5764 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5765
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5766
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5767 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5768 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5769 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5770 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]5771 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5772
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5773 /*
5774 * 6: add server cookie in the response if needed
5775 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5776 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5777 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5778 (!(t->flags & SN_DIRECT) ||
5779 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5780 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5781 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5782 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5783 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5784 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5785 /* the server is known, it's not the one the client requested, or the
5786 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5787 * insert a set-cookie here, except if we want to insert only on POST
5788 * requests and this one isn't. Note that servers which don't have cookies
5789 * (eg: some backup servers) will return a full cookie removal request.
5790 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5791 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5792 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5793 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5794 t->be->cookie_name);
5795 }
5796 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5797 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]5798
5799 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5800 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5801 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5802 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5803 trash.len += 5;
5804
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5805 if (t->be->cookie_maxlife) {
5806 /* emit first_date, which is either the original one or
5807 * the current date.
5808 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5809 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5810 s30tob64(txn->cookie_first_date ?
5811 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5812 (date.tv_sec+3) >> 2, trash.str + trash.len);
5813 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5814 }
5815 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5816 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5817 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5818
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5819 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5820 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5821
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5822 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5823 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5824
5825 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5826 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5827
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5828 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]5829 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5830
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5831 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5832 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5833 /* the server did not change, only the date was updated */
5834 txn->flags |= TX_SCK_UPDATED;
5835 else
5836 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5837
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5838 /* Here, we will tell an eventual cache on the client side that we don't
5839 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5840 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5841 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5842 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5843 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5844
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5845 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5846
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5847 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5848 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5849 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5850 }
5851 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5852
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5853 /*
5854 * 7: check if result will be cacheable with a cookie.
5855 * We'll block the response if security checks have caught
5856 * nasty things such as a cacheable cookie.
5857 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5858 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5859 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5860 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5861
5862 /* we're in presence of a cacheable response containing
5863 * a set-cookie header. We'll block it as requested by
5864 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5865 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5866 if (objt_server(t->target))
5867 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5868
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5869 t->be->be_counters.denied_resp++;
5870 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5871 if (t->listener->counters)
5872 t->listener->counters->denied_resp++;
5873
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5874 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5875 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5876 send_log(t->be, LOG_ALERT,
5877 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5878 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5879 goto return_srv_prx_502;
5880 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5881
5882 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5883 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5884 * If an "Upgrade" token is found, the header is left untouched in order
5885 * not to have to deal with some client bugs : some of them fail an upgrade
5886 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5887 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5888 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5889 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
Willy Tarreau02bce8b2014-01-30 00:15:28 +0100[diff] [blame^]5890 ((t->fe->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL ||
5891 (t->be->options & PR_O_HTTP_MODE) == PR_O_HTTP_PCL))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5892 unsigned int want_flags = 0;
5893
5894 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5895 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5896 /* we want a keep-alive response here. Keep-alive header
5897 * required if either side is not 1.1.
5898 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5899 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5900 want_flags |= TX_CON_KAL_SET;
5901 }
5902 else {
5903 /* we want a close response here. Close header required if
5904 * the server is 1.1, regardless of the client.
5905 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5906 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5907 want_flags |= TX_CON_CLO_SET;
5908 }
5909
5910 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5911 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5912 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5913
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5914 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5915 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5916 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5917 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5918
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5919 /*************************************************************
5920 * OK, that's finished for the headers. We have done what we *
5921 * could. Let's switch to the DATA state. *
5922 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5923
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5924 /* if the user wants to log as soon as possible, without counting
5925 * bytes from the server, then this is the right moment. We have
5926 * to temporarily assign bytes_out to log what we currently have.
5927 */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]5928 if (!LIST_ISEMPTY(&t->fe->logformat) && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5929 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5930 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5931 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5932 t->logs.bytes_out = 0;
5933 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5934
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5935 /* Note: we must not try to cheat by jumping directly to DATA,
5936 * otherwise we would not let the client side wake up.
5937 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5938
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5939 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5940 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5941 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5942}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5943
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5944/* This function is an analyser which forwards response body (including chunk
5945 * sizes if any). It is called as soon as we must forward, even if we forward
5946 * zero byte. The only situation where it must not be called is when we're in
5947 * tunnel mode and we want to forward till the close. It's used both to forward
5948 * remaining data and to resync after end of body. It expects the msg_state to
5949 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5950 * 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]5951 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5952 * bytes of pending data + the headers if not already done (between sol and sov).
5953 * 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]5954 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5955int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5956{
5957 struct http_txn *txn = &s->txn;
5958 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5959 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5960 static struct buffer *tmpbuf = NULL;
5961 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5962 int consumed_data = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5963 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5964
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5965 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5966 return 0;
5967
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5968 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]5969 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5970 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5971 /* Output closed while we were sending data. We must abort and
5972 * wake the other side up.
5973 */
5974 msg->msg_state = HTTP_MSG_ERROR;
5975 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5976 return 1;
5977 }
5978
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5979 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5980 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5981
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5982 /* this is the first time we need the compression buffer */
5983 if (s->comp_algo != NULL && tmpbuf == NULL) {
5984 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5985 goto aborted_xfer; /* no memory */
5986 }
5987
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5988 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5989 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5990 * rep->buf.p still points to the beginning of the message and msg->sol
5991 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5992 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5993 channel_forward(res, msg->sov);
5994 msg->next = 0;
5995 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5996
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5997 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5998 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5999 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6000 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6001 }
6002
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6003 if (s->comp_algo != NULL) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6004 ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6005 if (ret < 0) {
6006 res->flags |= CF_WAKE_WRITE;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6007 goto missing_data; /* not enough spaces in buffers */
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6008 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6009 compressing = 1;
6010 }
6011
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6012 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6013 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]6014 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6015 if (s->comp_algo == NULL) {
6016 bytes = msg->sov - msg->sol;
6017 if (msg->chunk_len || bytes) {
6018 msg->sol = msg->sov;
6019 msg->next -= bytes; /* will be forwarded */
6020 msg->chunk_len += bytes;
6021 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6022 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]6023 }
6024
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6025 switch (msg->msg_state - HTTP_MSG_DATA) {
6026 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6027 if (compressing) {
6028 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
6029 if (ret < 0)
6030 goto aborted_xfer;
6031 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6032
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6033 if (res->to_forward || msg->chunk_len) {
6034 res->flags |= CF_WAKE_WRITE;
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6035 goto missing_data;
Willy Tarreau4afd70a2014-01-25 02:26:39 +0100[diff] [blame]6036 }
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6037
6038 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6039 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6040 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6041 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]6042 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6043 if (compressing && consumed_data) {
6044 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6045 compressing = 0;
6046 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6047 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6048 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6049 /* fall through for HTTP_MSG_CHUNK_CRLF */
6050
6051 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
6052 /* we want the CRLF after the data */
6053
6054 ret = http_skip_chunk_crlf(msg);
6055 if (ret == 0)
6056 goto missing_data;
6057 else if (ret < 0) {
6058 if (msg->err_pos >= 0)
6059 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
6060 goto return_bad_res;
6061 }
6062 /* skipping data in buffer for compression */
6063 if (compressing) {
6064 b_adv(res->buf, msg->next);
6065 msg->next = 0;
6066 msg->sov = 0;
6067 msg->sol = 0;
6068 }
6069 /* we're in MSG_CHUNK_SIZE now, fall through */
6070
6071 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]6072 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]6073 * set ->sov and ->next to point to the body and switch to DATA or
6074 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6075 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6076
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6077 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]6078 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6079 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6080 else if (ret < 0) {
6081 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6082 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]6083 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6084 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6085 if (compressing) {
6086 if (likely(msg->chunk_len > 0)) {
6087 /* skipping data if we are in compression mode */
6088 b_adv(res->buf, msg->next);
6089 msg->next = 0;
6090 msg->sov = 0;
6091 msg->sol = 0;
6092 } else {
6093 if (consumed_data) {
6094 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
6095 compressing = 0;
6096 }
6097 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6098 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]6099 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6100 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6101
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6102 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
6103 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6104 if (ret == 0)
6105 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6106 else if (ret < 0) {
6107 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]6108 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]6109 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6110 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]6111 if (s->comp_algo != NULL) {
6112 /* forwarding trailers */
6113 channel_forward(res, msg->next);
6114 msg->next = 0;
6115 }
Willy Tarreau2d43e182013-04-03 00:22:25 +0200[diff] [blame]6116 /* we're in HTTP_MSG_DONE now, but we might still have
6117 * some data pending, so let's loop over once.
6118 */
6119 break;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6120
6121 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6122 /* other states, DONE...TUNNEL */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6123
6124 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]6125 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6126 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6127 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6128 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6129 if (http_resync_states(s)) {
6130 http_silent_debug(__LINE__, s);
6131 /* some state changes occurred, maybe the analyser
6132 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6133 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6134 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6135 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6136 /* response errors are most likely due to
6137 * the client aborting the transfer.
6138 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6139 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6140 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6141 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6142 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6143 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6144 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6145 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6146 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6147 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6148 }
6149 }
6150
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6151 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6152 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6153 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
6154 compressing = 0;
6155 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6156
6157 if (res->flags & CF_SHUTW)
6158 goto aborted_xfer;
6159
6160 /* stop waiting for data if the input is closed before the end. If the
6161 * client side was already closed, it means that the client has aborted,
6162 * so we don't want to count this as a server abort. Otherwise it's a
6163 * server abort.
6164 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6165 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6166 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
6167 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6168 if (!(s->flags & SN_ERR_MASK))
6169 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6170 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6171 if (objt_server(s->target))
6172 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6173 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6174 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6175
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6176 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6177 if (!s->req->analysers)
6178 goto return_bad_res;
6179
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]6180 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6181 if (s->comp_algo == NULL) {
6182 bytes = msg->sov - msg->sol;
6183 if (msg->chunk_len || bytes) {
6184 msg->sol = msg->sov;
6185 msg->next -= bytes; /* will be forwarded */
6186 msg->chunk_len += bytes;
6187 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6188 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6189 }
6190
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6191 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6192 * 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]6193 * Similarly, with keep-alive on the client side, we don't want to forward a
6194 * close.
6195 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6196 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6197 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6198 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6199 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6200
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6201 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6202 * 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]6203 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6204 * modes are already handled by the stream sock layer. We must not do
6205 * this in content-length mode because it could present the MSG_MORE
6206 * flag with the last block of forwarded data, which would cause an
6207 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6208 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6209 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6210 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6211
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6212 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6213 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6214 return 0;
6215
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6216 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6217 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6218 if (objt_server(s->target))
6219 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6220
6221 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6222 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6223 /* don't send any error message as we're in the body */
6224 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6225 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6226 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]6227 if (objt_server(s->target))
6228 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6229
6230 if (!(s->flags & SN_ERR_MASK))
6231 s->flags |= SN_ERR_PRXCOND;
6232 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6233 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6234 return 0;
6235
6236 aborted_xfer:
6237 txn->rsp.msg_state = HTTP_MSG_ERROR;
6238 /* don't send any error message as we're in the body */
6239 stream_int_retnclose(res->cons, NULL);
6240 res->analysers = 0;
6241 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6242
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6243 s->fe->fe_counters.cli_aborts++;
6244 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6245 if (objt_server(s->target))
6246 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6247
6248 if (!(s->flags & SN_ERR_MASK))
6249 s->flags |= SN_ERR_CLICL;
6250 if (!(s->flags & SN_FINST_MASK))
6251 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6252 return 0;
6253}
6254
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6255/* Iterate the same filter through all request headers.
6256 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6257 * Since it can manage the switch to another backend, it updates the per-proxy
6258 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6259 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6260int 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]6261{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6262 char term;
6263 char *cur_ptr, *cur_end, *cur_next;
6264 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6265 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6266 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6267 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6268
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6269 last_hdr = 0;
6270
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6271 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6272 old_idx = 0;
6273
6274 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6275 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6276 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6277 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6278 (exp->action == ACT_ALLOW ||
6279 exp->action == ACT_DENY ||
6280 exp->action == ACT_TARPIT))
6281 return 0;
6282
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6283 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6284 if (!cur_idx)
6285 break;
6286
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6287 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6288 cur_ptr = cur_next;
6289 cur_end = cur_ptr + cur_hdr->len;
6290 cur_next = cur_end + cur_hdr->cr + 1;
6291
6292 /* Now we have one header between cur_ptr and cur_end,
6293 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6294 */
6295
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6296 /* The annoying part is that pattern matching needs
6297 * that we modify the contents to null-terminate all
6298 * strings before testing them.
6299 */
6300
6301 term = *cur_end;
6302 *cur_end = '\0';
6303
6304 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6305 switch (exp->action) {
6306 case ACT_SETBE:
6307 /* It is not possible to jump a second time.
6308 * FIXME: should we return an HTTP/500 here so that
6309 * the admin knows there's a problem ?
6310 */
6311 if (t->be != t->fe)
6312 break;
6313
6314 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6315 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6316 last_hdr = 1;
6317 break;
6318
6319 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6320 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6321 last_hdr = 1;
6322 break;
6323
6324 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6325 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6326 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6327 break;
6328
6329 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6330 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6331 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6332 break;
6333
6334 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6335 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6336 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6337 /* FIXME: if the user adds a newline in the replacement, the
6338 * index will not be recalculated for now, and the new line
6339 * will not be counted as a new header.
6340 */
6341
6342 cur_end += delta;
6343 cur_next += delta;
6344 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6345 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6346 break;
6347
6348 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6349 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6350 cur_next += delta;
6351
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6352 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6353 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6354 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6355 cur_hdr->len = 0;
6356 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6357 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6358 break;
6359
6360 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6361 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6362 if (cur_end)
6363 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6364
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6365 /* keep the link from this header to next one in case of later
6366 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6367 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6368 old_idx = cur_idx;
6369 }
6370 return 0;
6371}
6372
6373
6374/* Apply the filter to the request line.
6375 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6376 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6377 * Since it can manage the switch to another backend, it updates the per-proxy
6378 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6379 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6380int 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]6381{
6382 char term;
6383 char *cur_ptr, *cur_end;
6384 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6385 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6386 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6387
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6388 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6389 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6390 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6391 (exp->action == ACT_ALLOW ||
6392 exp->action == ACT_DENY ||
6393 exp->action == ACT_TARPIT))
6394 return 0;
6395 else if (exp->action == ACT_REMOVE)
6396 return 0;
6397
6398 done = 0;
6399
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6400 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6401 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6402
6403 /* Now we have the request line between cur_ptr and cur_end */
6404
6405 /* The annoying part is that pattern matching needs
6406 * that we modify the contents to null-terminate all
6407 * strings before testing them.
6408 */
6409
6410 term = *cur_end;
6411 *cur_end = '\0';
6412
6413 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6414 switch (exp->action) {
6415 case ACT_SETBE:
6416 /* It is not possible to jump a second time.
6417 * FIXME: should we return an HTTP/500 here so that
6418 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6419 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6420 if (t->be != t->fe)
6421 break;
6422
6423 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6424 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6425 done = 1;
6426 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6427
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6428 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6429 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6430 done = 1;
6431 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6432
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6433 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6434 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6435 done = 1;
6436 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6437
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6438 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6439 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6440 done = 1;
6441 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6442
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6443 case ACT_REPLACE:
6444 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6445 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6446 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6447 /* FIXME: if the user adds a newline in the replacement, the
6448 * index will not be recalculated for now, and the new line
6449 * will not be counted as a new header.
6450 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6451
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6452 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6453 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6454 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6455 HTTP_MSG_RQMETH,
6456 cur_ptr, cur_end + 1,
6457 NULL, NULL);
6458 if (unlikely(!cur_end))
6459 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6460
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6461 /* we have a full request and we know that we have either a CR
6462 * or an LF at <ptr>.
6463 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6464 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6465 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]6466 /* there is no point trying this regex on headers */
6467 return 1;
6468 }
6469 }
6470 *cur_end = term; /* restore the string terminator */
6471 return done;
6472}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6473
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6474
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6475
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6476/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6477 * 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]6478 * 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]6479 * unparsable request. Since it can manage the switch to another backend, it
6480 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6481 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6482int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6483{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6484 struct http_txn *txn = &s->txn;
6485 struct hdr_exp *exp;
6486
6487 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6488 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6489
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6490 /*
6491 * The interleaving of transformations and verdicts
6492 * makes it difficult to decide to continue or stop
6493 * the evaluation.
6494 */
6495
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6496 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6497 break;
6498
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6499 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6500 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6501 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6502 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6503
6504 /* if this filter had a condition, evaluate it now and skip to
6505 * next filter if the condition does not match.
6506 */
6507 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6508 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]6509 ret = acl_pass(ret);
6510 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6511 ret = !ret;
6512
6513 if (!ret)
6514 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6515 }
6516
6517 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6518 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6519 if (unlikely(ret < 0))
6520 return -1;
6521
6522 if (likely(ret == 0)) {
6523 /* The filter did not match the request, it can be
6524 * iterated through all headers.
6525 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6526 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6527 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6528 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6529 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6530}
6531
6532
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6533
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6534/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6535 * Try to retrieve the server associated to the appsession.
6536 * If the server is found, it's assigned to the session.
6537 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6538void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6539 struct http_txn *txn = &t->txn;
6540 appsess *asession = NULL;
6541 char *sessid_temp = NULL;
6542
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6543 if (len > t->be->appsession_len) {
6544 len = t->be->appsession_len;
6545 }
6546
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6547 if (t->be->options2 & PR_O2_AS_REQL) {
6548 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6549 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6550 /* 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]6551 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6552 }
6553
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6554 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6555 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6556 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6557 return;
6558 }
6559
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6560 memcpy(txn->sessid, buf, len);
6561 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6562 }
6563
6564 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6565 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6566 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6567 return;
6568 }
6569
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6570 memcpy(sessid_temp, buf, len);
6571 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6572
6573 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6574 /* free previously allocated memory */
6575 pool_free2(apools.sessid, sessid_temp);
6576
6577 if (asession != NULL) {
6578 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6579 if (!(t->be->options2 & PR_O2_AS_REQL))
6580 asession->request_count++;
6581
6582 if (asession->serverid != NULL) {
6583 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6584
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6585 while (srv) {
6586 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6587 if ((srv->state & SRV_RUNNING) ||
6588 (t->be->options & PR_O_PERSIST) ||
6589 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6590 /* we found the server and it's usable */
6591 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6592 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6593 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6594 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6595
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6596 break;
6597 } else {
6598 txn->flags &= ~TX_CK_MASK;
6599 txn->flags |= TX_CK_DOWN;
6600 }
6601 }
6602 srv = srv->next;
6603 }
6604 }
6605 }
6606}
6607
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6608/* Find the end of a cookie value contained between <s> and <e>. It works the
6609 * same way as with headers above except that the semi-colon also ends a token.
6610 * See RFC2965 for more information. Note that it requires a valid header to
6611 * return a valid result.
6612 */
6613char *find_cookie_value_end(char *s, const char *e)
6614{
6615 int quoted, qdpair;
6616
6617 quoted = qdpair = 0;
6618 for (; s < e; s++) {
6619 if (qdpair) qdpair = 0;
6620 else if (quoted) {
6621 if (*s == '\\') qdpair = 1;
6622 else if (*s == '"') quoted = 0;
6623 }
6624 else if (*s == '"') quoted = 1;
6625 else if (*s == ',' || *s == ';') return s;
6626 }
6627 return s;
6628}
6629
6630/* Delete a value in a header between delimiters <from> and <next> in buffer
6631 * <buf>. The number of characters displaced is returned, and the pointer to
6632 * the first delimiter is updated if required. The function tries as much as
6633 * possible to respect the following principles :
6634 * - replace <from> delimiter by the <next> one unless <from> points to a
6635 * colon, in which case <next> is simply removed
6636 * - set exactly one space character after the new first delimiter, unless
6637 * there are not enough characters in the block being moved to do so.
6638 * - remove unneeded spaces before the previous delimiter and after the new
6639 * one.
6640 *
6641 * It is the caller's responsibility to ensure that :
6642 * - <from> points to a valid delimiter or the colon ;
6643 * - <next> points to a valid delimiter or the final CR/LF ;
6644 * - there are non-space chars before <from> ;
6645 * - there is a CR/LF at or after <next>.
6646 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6647int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6648{
6649 char *prev = *from;
6650
6651 if (*prev == ':') {
6652 /* We're removing the first value, preserve the colon and add a
6653 * space if possible.
6654 */
6655 if (!http_is_crlf[(unsigned char)*next])
6656 next++;
6657 prev++;
6658 if (prev < next)
6659 *prev++ = ' ';
6660
6661 while (http_is_spht[(unsigned char)*next])
6662 next++;
6663 } else {
6664 /* Remove useless spaces before the old delimiter. */
6665 while (http_is_spht[(unsigned char)*(prev-1)])
6666 prev--;
6667 *from = prev;
6668
6669 /* copy the delimiter and if possible a space if we're
6670 * not at the end of the line.
6671 */
6672 if (!http_is_crlf[(unsigned char)*next]) {
6673 *prev++ = *next++;
6674 if (prev + 1 < next)
6675 *prev++ = ' ';
6676 while (http_is_spht[(unsigned char)*next])
6677 next++;
6678 }
6679 }
6680 return buffer_replace2(buf, prev, next, NULL, 0);
6681}
6682
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6683/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6684 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6685 * desirable to call it only when needed. This code is quite complex because
6686 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6687 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6688 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6689void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6690{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6691 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6692 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6693 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6694 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6695 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6696
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6697 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6698 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6699 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6700
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6701 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6702 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6703 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6704
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6705 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6706 hdr_beg = hdr_next;
6707 hdr_end = hdr_beg + cur_hdr->len;
6708 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6709
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6710 /* We have one full header between hdr_beg and hdr_end, and the
6711 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6712 * "Cookie:" headers.
6713 */
6714
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6715 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6716 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6717 old_idx = cur_idx;
6718 continue;
6719 }
6720
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6721 del_from = NULL; /* nothing to be deleted */
6722 preserve_hdr = 0; /* assume we may kill the whole header */
6723
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6724 /* Now look for cookies. Conforming to RFC2109, we have to support
6725 * attributes whose name begin with a '$', and associate them with
6726 * the right cookie, if we want to delete this cookie.
6727 * So there are 3 cases for each cookie read :
6728 * 1) it's a special attribute, beginning with a '$' : ignore it.
6729 * 2) it's a server id cookie that we *MAY* want to delete : save
6730 * some pointers on it (last semi-colon, beginning of cookie...)
6731 * 3) it's an application cookie : we *MAY* have to delete a previous
6732 * "special" cookie.
6733 * At the end of loop, if a "special" cookie remains, we may have to
6734 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6735 * *MUST* delete it.
6736 *
6737 * Note: RFC2965 is unclear about the processing of spaces around
6738 * the equal sign in the ATTR=VALUE form. A careful inspection of
6739 * the RFC explicitly allows spaces before it, and not within the
6740 * tokens (attrs or values). An inspection of RFC2109 allows that
6741 * too but section 10.1.3 lets one think that spaces may be allowed
6742 * after the equal sign too, resulting in some (rare) buggy
6743 * implementations trying to do that. So let's do what servers do.
6744 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6745 * allowed quoted strings in values, with any possible character
6746 * after a backslash, including control chars and delimitors, which
6747 * causes parsing to become ambiguous. Browsers also allow spaces
6748 * within values even without quotes.
6749 *
6750 * We have to keep multiple pointers in order to support cookie
6751 * removal at the beginning, middle or end of header without
6752 * corrupting the header. All of these headers are valid :
6753 *
6754 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6755 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6756 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6757 * | | | | | | | | |
6758 * | | | | | | | | hdr_end <--+
6759 * | | | | | | | +--> next
6760 * | | | | | | +----> val_end
6761 * | | | | | +-----------> val_beg
6762 * | | | | +--------------> equal
6763 * | | | +----------------> att_end
6764 * | | +---------------------> att_beg
6765 * | +--------------------------> prev
6766 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6767 */
6768
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6769 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6770 /* Iterate through all cookies on this line */
6771
6772 /* find att_beg */
6773 att_beg = prev + 1;
6774 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6775 att_beg++;
6776
6777 /* find att_end : this is the first character after the last non
6778 * space before the equal. It may be equal to hdr_end.
6779 */
6780 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6781
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6782 while (equal < hdr_end) {
6783 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6784 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6785 if (http_is_spht[(unsigned char)*equal++])
6786 continue;
6787 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6788 }
6789
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6790 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6791 * is between <att_beg> and <equal>, both may be identical.
6792 */
6793
6794 /* look for end of cookie if there is an equal sign */
6795 if (equal < hdr_end && *equal == '=') {
6796 /* look for the beginning of the value */
6797 val_beg = equal + 1;
6798 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6799 val_beg++;
6800
6801 /* find the end of the value, respecting quotes */
6802 next = find_cookie_value_end(val_beg, hdr_end);
6803
6804 /* make val_end point to the first white space or delimitor after the value */
6805 val_end = next;
6806 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6807 val_end--;
6808 } else {
6809 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6810 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6811
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6812 /* We have nothing to do with attributes beginning with '$'. However,
6813 * they will automatically be removed if a header before them is removed,
6814 * since they're supposed to be linked together.
6815 */
6816 if (*att_beg == '$')
6817 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6818
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6819 /* Ignore cookies with no equal sign */
6820 if (equal == next) {
6821 /* This is not our cookie, so we must preserve it. But if we already
6822 * scheduled another cookie for removal, we cannot remove the
6823 * complete header, but we can remove the previous block itself.
6824 */
6825 preserve_hdr = 1;
6826 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6827 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6828 val_end += delta;
6829 next += delta;
6830 hdr_end += delta;
6831 hdr_next += delta;
6832 cur_hdr->len += delta;
6833 http_msg_move_end(&txn->req, delta);
6834 prev = del_from;
6835 del_from = NULL;
6836 }
6837 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6838 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6839
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6840 /* if there are spaces around the equal sign, we need to
6841 * strip them otherwise we'll get trouble for cookie captures,
6842 * or even for rewrites. Since this happens extremely rarely,
6843 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6844 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6845 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6846 int stripped_before = 0;
6847 int stripped_after = 0;
6848
6849 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6850 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6851 equal += stripped_before;
6852 val_beg += stripped_before;
6853 }
6854
6855 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6856 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6857 val_beg += stripped_after;
6858 stripped_before += stripped_after;
6859 }
6860
6861 val_end += stripped_before;
6862 next += stripped_before;
6863 hdr_end += stripped_before;
6864 hdr_next += stripped_before;
6865 cur_hdr->len += stripped_before;
6866 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6867 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6868 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6869
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6870 /* First, let's see if we want to capture this cookie. We check
6871 * that we don't already have a client side cookie, because we
6872 * can only capture one. Also as an optimisation, we ignore
6873 * cookies shorter than the declared name.
6874 */
6875 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6876 (val_end - att_beg >= t->fe->capture_namelen) &&
6877 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6878 int log_len = val_end - att_beg;
6879
6880 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6881 Alert("HTTP logging : out of memory.\n");
6882 } else {
6883 if (log_len > t->fe->capture_len)
6884 log_len = t->fe->capture_len;
6885 memcpy(txn->cli_cookie, att_beg, log_len);
6886 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6887 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6888 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6889
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6890 /* Persistence cookies in passive, rewrite or insert mode have the
6891 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6892 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6893 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6894 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6895 * For cookies in prefix mode, the form is :
6896 *
6897 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6898 */
6899 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6900 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6901 struct server *srv = t->be->srv;
6902 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6903
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6904 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6905 * have the server ID between val_beg and delim, and the original cookie between
6906 * delim+1 and val_end. Otherwise, delim==val_end :
6907 *
6908 * Cookie: NAME=SRV; # in all but prefix modes
6909 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6910 * | || || | |+-> next
6911 * | || || | +--> val_end
6912 * | || || +---------> delim
6913 * | || |+------------> val_beg
6914 * | || +-------------> att_end = equal
6915 * | |+-----------------> att_beg
6916 * | +------------------> prev
6917 * +-------------------------> hdr_beg
6918 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6919
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6920 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6921 for (delim = val_beg; delim < val_end; delim++)
6922 if (*delim == COOKIE_DELIM)
6923 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6924 } else {
6925 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6926 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6927 /* Now check if the cookie contains a date field, which would
6928 * appear after a vertical bar ('|') just after the server name
6929 * and before the delimiter.
6930 */
6931 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6932 if (vbar1) {
6933 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6934 * right is the last seen date. It is a base64 encoded
6935 * 30-bit value representing the UNIX date since the
6936 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6937 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6938 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6939 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6940 if (val_end - vbar1 >= 5) {
6941 val = b64tos30(vbar1);
6942 if (val > 0)
6943 txn->cookie_last_date = val << 2;
6944 }
6945 /* look for a second vertical bar */
6946 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6947 if (vbar1 && (val_end - vbar1 > 5)) {
6948 val = b64tos30(vbar1 + 1);
6949 if (val > 0)
6950 txn->cookie_first_date = val << 2;
6951 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6952 }
6953 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6954
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6955 /* if the cookie has an expiration date and the proxy wants to check
6956 * it, then we do that now. We first check if the cookie is too old,
6957 * then only if it has expired. We detect strict overflow because the
6958 * time resolution here is not great (4 seconds). Cookies with dates
6959 * in the future are ignored if their offset is beyond one day. This
6960 * allows an admin to fix timezone issues without expiring everyone
6961 * and at the same time avoids keeping unwanted side effects for too
6962 * long.
6963 */
6964 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6965 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6966 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6967 txn->flags &= ~TX_CK_MASK;
6968 txn->flags |= TX_CK_OLD;
6969 delim = val_beg; // let's pretend we have not found the cookie
6970 txn->cookie_first_date = 0;
6971 txn->cookie_last_date = 0;
6972 }
6973 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6974 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6975 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6976 txn->flags &= ~TX_CK_MASK;
6977 txn->flags |= TX_CK_EXPIRED;
6978 delim = val_beg; // let's pretend we have not found the cookie
6979 txn->cookie_first_date = 0;
6980 txn->cookie_last_date = 0;
6981 }
6982
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6983 /* Here, we'll look for the first running server which supports the cookie.
6984 * This allows to share a same cookie between several servers, for example
6985 * to dedicate backup servers to specific servers only.
6986 * However, to prevent clients from sticking to cookie-less backup server
6987 * when they have incidentely learned an empty cookie, we simply ignore
6988 * empty cookies and mark them as invalid.
6989 * The same behaviour is applied when persistence must be ignored.
6990 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6991 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6992 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6993
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6994 while (srv) {
6995 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6996 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6997 if ((srv->state & SRV_RUNNING) ||
6998 (t->be->options & PR_O_PERSIST) ||
6999 (t->flags & SN_FORCE_PRST)) {
7000 /* we found the server and we can use it */
7001 txn->flags &= ~TX_CK_MASK;
7002 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
7003 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7004 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7005 break;
7006 } else {
7007 /* we found a server, but it's down,
7008 * mark it as such and go on in case
7009 * another one is available.
7010 */
7011 txn->flags &= ~TX_CK_MASK;
7012 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7013 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7014 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7015 srv = srv->next;
7016 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7017
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]7018 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7019 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7020 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]7021 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
7022 txn->flags |= TX_CK_UNUSED;
7023 else
7024 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7025 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7026
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7027 /* depending on the cookie mode, we may have to either :
7028 * - delete the complete cookie if we're in insert+indirect mode, so that
7029 * the server never sees it ;
7030 * - remove the server id from the cookie value, and tag the cookie as an
7031 * application cookie so that it does not get accidentely removed later,
7032 * if we're in cookie prefix mode
7033 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7034 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7035 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7036
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7037 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7038 val_end += delta;
7039 next += delta;
7040 hdr_end += delta;
7041 hdr_next += delta;
7042 cur_hdr->len += delta;
7043 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7044
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7045 del_from = NULL;
7046 preserve_hdr = 1; /* we want to keep this cookie */
7047 }
7048 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7049 (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]7050 del_from = prev;
7051 }
7052 } else {
7053 /* This is not our cookie, so we must preserve it. But if we already
7054 * scheduled another cookie for removal, we cannot remove the
7055 * complete header, but we can remove the previous block itself.
7056 */
7057 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7058
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7059 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7060 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]7061 if (att_beg >= del_from)
7062 att_beg += delta;
7063 if (att_end >= del_from)
7064 att_end += delta;
7065 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7066 val_end += delta;
7067 next += delta;
7068 hdr_end += delta;
7069 hdr_next += delta;
7070 cur_hdr->len += delta;
7071 http_msg_move_end(&txn->req, delta);
7072 prev = del_from;
7073 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7074 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7075 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7076
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7077 /* Look for the appsession cookie unless persistence must be ignored */
7078 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
7079 int cmp_len, value_len;
7080 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7081
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7082 if (t->be->options2 & PR_O2_AS_PFX) {
7083 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7084 value_begin = att_beg + t->be->appsession_name_len;
7085 value_len = val_end - att_beg - t->be->appsession_name_len;
7086 } else {
7087 cmp_len = att_end - att_beg;
7088 value_begin = val_beg;
7089 value_len = val_end - val_beg;
7090 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7091
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7092 /* let's see if the cookie is our appcookie */
7093 if (cmp_len == t->be->appsession_name_len &&
7094 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
7095 manage_client_side_appsession(t, value_begin, value_len);
7096 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7097 }
7098
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7099 /* continue with next cookie on this header line */
7100 att_beg = next;
7101 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7102
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7103 /* There are no more cookies on this line.
7104 * We may still have one (or several) marked for deletion at the
7105 * end of the line. We must do this now in two ways :
7106 * - if some cookies must be preserved, we only delete from the
7107 * mark to the end of line ;
7108 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7109 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7110 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7111 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7112 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7113 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7114 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7115 cur_hdr->len += delta;
7116 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7117 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7118
7119 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]7120 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7121 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7122 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7123 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7124 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7125 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7126 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7127 }
7128
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7129 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7130 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]7131 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7132}
7133
7134
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7135/* Iterate the same filter through all response headers contained in <rtr>.
7136 * Returns 1 if this filter can be stopped upon return, otherwise 0.
7137 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7138int 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]7139{
7140 char term;
7141 char *cur_ptr, *cur_end, *cur_next;
7142 int cur_idx, old_idx, last_hdr;
7143 struct http_txn *txn = &t->txn;
7144 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7145 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7146
7147 last_hdr = 0;
7148
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7149 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7150 old_idx = 0;
7151
7152 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7153 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7154 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7155 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7156 (exp->action == ACT_ALLOW ||
7157 exp->action == ACT_DENY))
7158 return 0;
7159
7160 cur_idx = txn->hdr_idx.v[old_idx].next;
7161 if (!cur_idx)
7162 break;
7163
7164 cur_hdr = &txn->hdr_idx.v[cur_idx];
7165 cur_ptr = cur_next;
7166 cur_end = cur_ptr + cur_hdr->len;
7167 cur_next = cur_end + cur_hdr->cr + 1;
7168
7169 /* Now we have one header between cur_ptr and cur_end,
7170 * and the next header starts at cur_next.
7171 */
7172
7173 /* The annoying part is that pattern matching needs
7174 * that we modify the contents to null-terminate all
7175 * strings before testing them.
7176 */
7177
7178 term = *cur_end;
7179 *cur_end = '\0';
7180
7181 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7182 switch (exp->action) {
7183 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7184 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7185 last_hdr = 1;
7186 break;
7187
7188 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7189 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7190 last_hdr = 1;
7191 break;
7192
7193 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7194 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7195 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7196 /* FIXME: if the user adds a newline in the replacement, the
7197 * index will not be recalculated for now, and the new line
7198 * will not be counted as a new header.
7199 */
7200
7201 cur_end += delta;
7202 cur_next += delta;
7203 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7204 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7205 break;
7206
7207 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7208 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7209 cur_next += delta;
7210
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7211 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7212 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7213 txn->hdr_idx.used--;
7214 cur_hdr->len = 0;
7215 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7216 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7217 break;
7218
7219 }
7220 }
7221 if (cur_end)
7222 *cur_end = term; /* restore the string terminator */
7223
7224 /* keep the link from this header to next one in case of later
7225 * removal of next header.
7226 */
7227 old_idx = cur_idx;
7228 }
7229 return 0;
7230}
7231
7232
7233/* Apply the filter to the status line in the response buffer <rtr>.
7234 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7235 * or -1 if a replacement resulted in an invalid status line.
7236 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7237int 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]7238{
7239 char term;
7240 char *cur_ptr, *cur_end;
7241 int done;
7242 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7243 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7244
7245
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7246 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7247 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7248 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7249 (exp->action == ACT_ALLOW ||
7250 exp->action == ACT_DENY))
7251 return 0;
7252 else if (exp->action == ACT_REMOVE)
7253 return 0;
7254
7255 done = 0;
7256
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7257 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7258 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7259
7260 /* Now we have the status line between cur_ptr and cur_end */
7261
7262 /* The annoying part is that pattern matching needs
7263 * that we modify the contents to null-terminate all
7264 * strings before testing them.
7265 */
7266
7267 term = *cur_end;
7268 *cur_end = '\0';
7269
7270 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7271 switch (exp->action) {
7272 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7273 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7274 done = 1;
7275 break;
7276
7277 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7278 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7279 done = 1;
7280 break;
7281
7282 case ACT_REPLACE:
7283 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7284 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7285 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7286 /* FIXME: if the user adds a newline in the replacement, the
7287 * index will not be recalculated for now, and the new line
7288 * will not be counted as a new header.
7289 */
7290
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7291 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7292 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7293 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7294 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7295 cur_ptr, cur_end + 1,
7296 NULL, NULL);
7297 if (unlikely(!cur_end))
7298 return -1;
7299
7300 /* we have a full respnse and we know that we have either a CR
7301 * or an LF at <ptr>.
7302 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7303 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]7304 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]7305 /* there is no point trying this regex on headers */
7306 return 1;
7307 }
7308 }
7309 *cur_end = term; /* restore the string terminator */
7310 return done;
7311}
7312
7313
7314
7315/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7316 * 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]7317 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7318 * unparsable response.
7319 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7320int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7321{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7322 struct http_txn *txn = &s->txn;
7323 struct hdr_exp *exp;
7324
7325 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7326 int ret;
7327
7328 /*
7329 * The interleaving of transformations and verdicts
7330 * makes it difficult to decide to continue or stop
7331 * the evaluation.
7332 */
7333
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7334 if (txn->flags & TX_SVDENY)
7335 break;
7336
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7337 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7338 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7339 exp->action == ACT_PASS)) {
7340 exp = exp->next;
7341 continue;
7342 }
7343
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7344 /* if this filter had a condition, evaluate it now and skip to
7345 * next filter if the condition does not match.
7346 */
7347 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7348 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]7349 ret = acl_pass(ret);
7350 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7351 ret = !ret;
7352 if (!ret)
7353 continue;
7354 }
7355
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7356 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7357 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7358 if (unlikely(ret < 0))
7359 return -1;
7360
7361 if (likely(ret == 0)) {
7362 /* The filter did not match the response, it can be
7363 * iterated through all headers.
7364 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7365 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7366 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7367 }
7368 return 0;
7369}
7370
7371
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7372/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7373 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7374 * desirable to call it only when needed. This function is also used when we
7375 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7376 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7377void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7378{
7379 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7380 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7381 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7382 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7383 char *hdr_beg, *hdr_end, *hdr_next;
7384 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7385
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7386 /* Iterate through the headers.
7387 * we start with the start line.
7388 */
7389 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7390 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7391
7392 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7393 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7394 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7395
7396 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7397 hdr_beg = hdr_next;
7398 hdr_end = hdr_beg + cur_hdr->len;
7399 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7400
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7401 /* We have one full header between hdr_beg and hdr_end, and the
7402 * next header starts at hdr_next. We're only interested in
7403 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7404 */
7405
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7406 is_cookie2 = 0;
7407 prev = hdr_beg + 10;
7408 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7409 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7410 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7411 if (!val) {
7412 old_idx = cur_idx;
7413 continue;
7414 }
7415 is_cookie2 = 1;
7416 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7417 }
7418
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7419 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7420 * <prev> points to the colon.
7421 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7422 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7423
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7424 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7425 * check-cache is enabled) and we are not interested in checking
7426 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7427 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7428 if (t->be->cookie_name == NULL &&
7429 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7430 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7431 return;
7432
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7433 /* OK so now we know we have to process this response cookie.
7434 * The format of the Set-Cookie header is slightly different
7435 * from the format of the Cookie header in that it does not
7436 * support the comma as a cookie delimiter (thus the header
7437 * cannot be folded) because the Expires attribute described in
7438 * the original Netscape's spec may contain an unquoted date
7439 * with a comma inside. We have to live with this because
7440 * many browsers don't support Max-Age and some browsers don't
7441 * support quoted strings. However the Set-Cookie2 header is
7442 * clean.
7443 *
7444 * We have to keep multiple pointers in order to support cookie
7445 * removal at the beginning, middle or end of header without
7446 * corrupting the header (in case of set-cookie2). A special
7447 * pointer, <scav> points to the beginning of the set-cookie-av
7448 * fields after the first semi-colon. The <next> pointer points
7449 * either to the end of line (set-cookie) or next unquoted comma
7450 * (set-cookie2). All of these headers are valid :
7451 *
7452 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7453 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7454 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7455 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7456 * | | | | | | | | | |
7457 * | | | | | | | | +-> next hdr_end <--+
7458 * | | | | | | | +------------> scav
7459 * | | | | | | +--------------> val_end
7460 * | | | | | +--------------------> val_beg
7461 * | | | | +----------------------> equal
7462 * | | | +------------------------> att_end
7463 * | | +----------------------------> att_beg
7464 * | +------------------------------> prev
7465 * +-----------------------------------------> hdr_beg
7466 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7467
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7468 for (; prev < hdr_end; prev = next) {
7469 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7470
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7471 /* find att_beg */
7472 att_beg = prev + 1;
7473 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7474 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7475
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7476 /* find att_end : this is the first character after the last non
7477 * space before the equal. It may be equal to hdr_end.
7478 */
7479 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7480
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7481 while (equal < hdr_end) {
7482 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7483 break;
7484 if (http_is_spht[(unsigned char)*equal++])
7485 continue;
7486 att_end = equal;
7487 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7488
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7489 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7490 * is between <att_beg> and <equal>, both may be identical.
7491 */
7492
7493 /* look for end of cookie if there is an equal sign */
7494 if (equal < hdr_end && *equal == '=') {
7495 /* look for the beginning of the value */
7496 val_beg = equal + 1;
7497 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7498 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7499
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7500 /* find the end of the value, respecting quotes */
7501 next = find_cookie_value_end(val_beg, hdr_end);
7502
7503 /* make val_end point to the first white space or delimitor after the value */
7504 val_end = next;
7505 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7506 val_end--;
7507 } else {
7508 /* <equal> points to next comma, semi-colon or EOL */
7509 val_beg = val_end = next = equal;
7510 }
7511
7512 if (next < hdr_end) {
7513 /* Set-Cookie2 supports multiple cookies, and <next> points to
7514 * a colon or semi-colon before the end. So skip all attr-value
7515 * pairs and look for the next comma. For Set-Cookie, since
7516 * commas are permitted in values, skip to the end.
7517 */
7518 if (is_cookie2)
7519 next = find_hdr_value_end(next, hdr_end);
7520 else
7521 next = hdr_end;
7522 }
7523
7524 /* Now everything is as on the diagram above */
7525
7526 /* Ignore cookies with no equal sign */
7527 if (equal == val_end)
7528 continue;
7529
7530 /* If there are spaces around the equal sign, we need to
7531 * strip them otherwise we'll get trouble for cookie captures,
7532 * or even for rewrites. Since this happens extremely rarely,
7533 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7534 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7535 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7536 int stripped_before = 0;
7537 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7538
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7539 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7540 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7541 equal += stripped_before;
7542 val_beg += stripped_before;
7543 }
7544
7545 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7546 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7547 val_beg += stripped_after;
7548 stripped_before += stripped_after;
7549 }
7550
7551 val_end += stripped_before;
7552 next += stripped_before;
7553 hdr_end += stripped_before;
7554 hdr_next += stripped_before;
7555 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7556 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7557 }
7558
7559 /* First, let's see if we want to capture this cookie. We check
7560 * that we don't already have a server side cookie, because we
7561 * can only capture one. Also as an optimisation, we ignore
7562 * cookies shorter than the declared name.
7563 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7564 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7565 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7566 (val_end - att_beg >= t->fe->capture_namelen) &&
7567 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7568 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7569 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7570 Alert("HTTP logging : out of memory.\n");
7571 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7572 else {
7573 if (log_len > t->fe->capture_len)
7574 log_len = t->fe->capture_len;
7575 memcpy(txn->srv_cookie, att_beg, log_len);
7576 txn->srv_cookie[log_len] = 0;
7577 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7578 }
7579
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7580 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7581 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7582 if (!(t->flags & SN_IGNORE_PRST) &&
7583 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7584 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7585 /* assume passive cookie by default */
7586 txn->flags &= ~TX_SCK_MASK;
7587 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7588
7589 /* If the cookie is in insert mode on a known server, we'll delete
7590 * this occurrence because we'll insert another one later.
7591 * 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]7592 * a direct access.
7593 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7594 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7595 /* The "preserve" flag was set, we don't want to touch the
7596 * server's cookie.
7597 */
7598 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7599 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7600 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7601 /* this cookie must be deleted */
7602 if (*prev == ':' && next == hdr_end) {
7603 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7604 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7605 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7606 txn->hdr_idx.used--;
7607 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7608 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7609 hdr_next += delta;
7610 http_msg_move_end(&txn->rsp, delta);
7611 /* note: while both invalid now, <next> and <hdr_end>
7612 * are still equal, so the for() will stop as expected.
7613 */
7614 } else {
7615 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7616 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7617 next = prev;
7618 hdr_end += delta;
7619 hdr_next += delta;
7620 cur_hdr->len += delta;
7621 http_msg_move_end(&txn->rsp, delta);
7622 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7623 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7624 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7625 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7626 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7627 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7628 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7629 * with this server since we know it.
7630 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7631 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7632 next += delta;
7633 hdr_end += delta;
7634 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7635 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7636 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7637
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7638 txn->flags &= ~TX_SCK_MASK;
7639 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7640 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7641 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7642 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7643 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7644 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7645 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7646 next += delta;
7647 hdr_end += delta;
7648 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7649 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7650 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7651
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7652 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7653 txn->flags &= ~TX_SCK_MASK;
7654 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7655 }
7656 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7657 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7658 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7659 int cmp_len, value_len;
7660 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7661
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7662 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7663 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7664 value_begin = att_beg + t->be->appsession_name_len;
7665 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]7666 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7667 cmp_len = att_end - att_beg;
7668 value_begin = val_beg;
7669 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7670 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7671
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7672 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7673 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7674 /* free a possibly previously allocated memory */
7675 pool_free2(apools.sessid, txn->sessid);
7676
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7677 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7678 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7679 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7680 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7681 return;
7682 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7683 memcpy(txn->sessid, value_begin, value_len);
7684 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7685 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7686 }
7687 /* that's done for this cookie, check the next one on the same
7688 * line when next != hdr_end (only if is_cookie2).
7689 */
7690 }
7691 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7692 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7693 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7694
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7695 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7696 appsess *asession = NULL;
7697 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7698 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7699 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7700 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7701 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7702 Alert("Not enough Memory process_srv():asession:calloc().\n");
7703 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7704 return;
7705 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7706 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7707
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7708 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7709 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7710 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]7711 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7712 return;
7713 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7714 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7715 asession->sessid[t->be->appsession_len] = 0;
7716
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7717 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7718 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7719 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7720 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]7721 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7722 return;
7723 }
7724 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7725 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7726
7727 asession->request_count = 0;
7728 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7729 }
7730
7731 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7732 asession->request_count++;
7733 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7734}
7735
7736
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7737/*
7738 * Check if response is cacheable or not. Updates t->flags.
7739 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7740void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7741{
7742 struct http_txn *txn = &t->txn;
7743 char *p1, *p2;
7744
7745 char *cur_ptr, *cur_end, *cur_next;
7746 int cur_idx;
7747
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7748 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7749 return;
7750
7751 /* Iterate through the headers.
7752 * we start with the start line.
7753 */
7754 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7755 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7756
7757 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7758 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7759 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7760
7761 cur_hdr = &txn->hdr_idx.v[cur_idx];
7762 cur_ptr = cur_next;
7763 cur_end = cur_ptr + cur_hdr->len;
7764 cur_next = cur_end + cur_hdr->cr + 1;
7765
7766 /* We have one full header between cur_ptr and cur_end, and the
7767 * next header starts at cur_next. We're only interested in
7768 * "Cookie:" headers.
7769 */
7770
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7771 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7772 if (val) {
7773 if ((cur_end - (cur_ptr + val) >= 8) &&
7774 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7775 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7776 return;
7777 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7778 }
7779
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7780 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7781 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7782 continue;
7783
7784 /* OK, right now we know we have a cache-control header at cur_ptr */
7785
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7786 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7787
7788 if (p1 >= cur_end) /* no more info */
7789 continue;
7790
7791 /* p1 is at the beginning of the value */
7792 p2 = p1;
7793
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7794 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7795 p2++;
7796
7797 /* we have a complete value between p1 and p2 */
7798 if (p2 < cur_end && *p2 == '=') {
7799 /* we have something of the form no-cache="set-cookie" */
7800 if ((cur_end - p1 >= 21) &&
7801 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7802 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7803 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7804 continue;
7805 }
7806
7807 /* OK, so we know that either p2 points to the end of string or to a comma */
7808 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]7809 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7810 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7811 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7812 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7813 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7814 return;
7815 }
7816
7817 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7818 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7819 continue;
7820 }
7821 }
7822}
7823
7824
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7825/*
7826 * Try to retrieve a known appsession in the URI, then the associated server.
7827 * If the server is found, it's assigned to the session.
7828 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7829void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7830{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7831 char *end_params, *first_param, *cur_param, *next_param;
7832 char separator;
7833 int value_len;
7834
7835 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7836
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7837 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7838 (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]7839 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7840 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7841
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7842 first_param = NULL;
7843 switch (mode) {
7844 case PR_O2_AS_M_PP:
7845 first_param = memchr(begin, ';', len);
7846 break;
7847 case PR_O2_AS_M_QS:
7848 first_param = memchr(begin, '?', len);
7849 break;
7850 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7851
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7852 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7853 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7854 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7855
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7856 switch (mode) {
7857 case PR_O2_AS_M_PP:
7858 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7859 end_params = (char *) begin + len;
7860 }
7861 separator = ';';
7862 break;
7863 case PR_O2_AS_M_QS:
7864 end_params = (char *) begin + len;
7865 separator = '&';
7866 break;
7867 default:
7868 /* unknown mode, shouldn't happen */
7869 return;
7870 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7871
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7872 cur_param = next_param = end_params;
7873 while (cur_param > first_param) {
7874 cur_param--;
7875 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7876 /* let's see if this is the appsession parameter */
7877 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7878 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7879 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7880 /* Cool... it's the right one */
7881 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7882 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7883 if (value_len > 0) {
7884 manage_client_side_appsession(t, cur_param, value_len);
7885 }
7886 break;
7887 }
7888 next_param = cur_param;
7889 }
7890 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7891#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7892 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7893 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7894#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7895}
7896
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7897/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7898 * 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]7899 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7900 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7901 * 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]7902 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7903 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7904 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7905 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7906int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7907{
7908 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7909 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7910 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7911
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7912 if (!uri_auth)
7913 return 0;
7914
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7915 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]7916 return 0;
7917
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7918 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7919 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7920 return 0;
7921
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]7922 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7923 return 0;
7924
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7925 return 1;
7926}
7927
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7928/*
7929 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7930 * By default it tries to report the error position as msg->err_pos. However if
7931 * this one is not set, it will then report msg->next, which is the last known
7932 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7933 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7934 */
7935void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7936 struct http_msg *msg,
Willy Tarreau3770f232013-12-07 00:01:53 +0100[diff] [blame]7937 enum ht_state state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7938{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7939 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7940 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7941
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7942 es->len = MIN(chn->buf->i, sizeof(es->buf));
7943 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7944 len1 = MIN(len1, es->len);
7945 len2 = es->len - len1; /* remaining data if buffer wraps */
7946
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7947 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7948 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7949 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7950
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7951 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7952 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7953 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7954 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7955
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7956 es->when = date; // user-visible date
7957 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7958 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7959 es->oe = other_end;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]7960 if (objt_conn(s->req->prod->end))
7961 es->src = __objt_conn(s->req->prod->end)->addr.from;
7962 else
7963 memset(&es->src, 0, sizeof(es->src));
7964
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7965 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7966 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7967 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7968 es->s_flags = s->flags;
7969 es->t_flags = s->txn.flags;
7970 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7971 es->b_out = chn->buf->o;
7972 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7973 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7974 es->m_clen = msg->chunk_len;
7975 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7976}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7977
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7978/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7979 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7980 * performed over the whole headers. Otherwise it must contain a valid header
7981 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7982 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7983 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7984 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7985 * -1. The value fetch stops at commas, so this function is suited for use with
7986 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7987 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7988 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7989unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7990 struct hdr_idx *idx, int occ,
7991 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7992{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7993 struct hdr_ctx local_ctx;
7994 char *ptr_hist[MAX_HDR_HISTORY];
7995 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7996 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7997 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7998
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7999 if (!ctx) {
8000 local_ctx.idx = 0;
8001 ctx = &local_ctx;
8002 }
8003
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8004 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8005 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8006 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8007 occ--;
8008 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8009 *vptr = ctx->line + ctx->val;
8010 *vlen = ctx->vlen;
8011 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8012 }
8013 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8014 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8015 }
8016
8017 /* negative occurrence, we scan all the list then walk back */
8018 if (-occ > MAX_HDR_HISTORY)
8019 return 0;
8020
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8021 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8022 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8023 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8024 len_hist[hist_ptr] = ctx->vlen;
8025 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8026 hist_ptr = 0;
8027 found++;
8028 }
8029 if (-occ > found)
8030 return 0;
8031 /* 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]8032 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
8033 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
8034 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8035 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]8036 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8037 if (hist_ptr >= MAX_HDR_HISTORY)
8038 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]8039 *vptr = ptr_hist[hist_ptr];
8040 *vlen = len_hist[hist_ptr];
8041 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]8042}
8043
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8044/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
8045 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
8046 * performed over the whole headers. Otherwise it must contain a valid header
8047 * context, initialised with ctx->idx=0 for the first lookup in a series. If
8048 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
8049 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
8050 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
8051 * -1. This function differs from http_get_hdr() in that it only returns full
8052 * line header values and does not stop at commas.
8053 * The return value is 0 if nothing was found, or non-zero otherwise.
8054 */
8055unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
8056 struct hdr_idx *idx, int occ,
8057 struct hdr_ctx *ctx, char **vptr, int *vlen)
8058{
8059 struct hdr_ctx local_ctx;
8060 char *ptr_hist[MAX_HDR_HISTORY];
8061 int len_hist[MAX_HDR_HISTORY];
8062 unsigned int hist_ptr;
8063 int found;
8064
8065 if (!ctx) {
8066 local_ctx.idx = 0;
8067 ctx = &local_ctx;
8068 }
8069
8070 if (occ >= 0) {
8071 /* search from the beginning */
8072 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8073 occ--;
8074 if (occ <= 0) {
8075 *vptr = ctx->line + ctx->val;
8076 *vlen = ctx->vlen;
8077 return 1;
8078 }
8079 }
8080 return 0;
8081 }
8082
8083 /* negative occurrence, we scan all the list then walk back */
8084 if (-occ > MAX_HDR_HISTORY)
8085 return 0;
8086
8087 found = hist_ptr = 0;
8088 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
8089 ptr_hist[hist_ptr] = ctx->line + ctx->val;
8090 len_hist[hist_ptr] = ctx->vlen;
8091 if (++hist_ptr >= MAX_HDR_HISTORY)
8092 hist_ptr = 0;
8093 found++;
8094 }
8095 if (-occ > found)
8096 return 0;
8097 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
8098 * find occurrence -occ, so we have to check [hist_ptr+occ].
8099 */
8100 hist_ptr += occ;
8101 if (hist_ptr >= MAX_HDR_HISTORY)
8102 hist_ptr -= MAX_HDR_HISTORY;
8103 *vptr = ptr_hist[hist_ptr];
8104 *vlen = len_hist[hist_ptr];
8105 return 1;
8106}
8107
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]8108/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]8109 * Print a debug line with a header. Always stop at the first CR or LF char,
8110 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
8111 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8112 */
8113void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
8114{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8115 int max;
8116 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]8117 dir,
8118 objt_conn(t->req->prod->end) ? (unsigned short)objt_conn(t->req->prod->end)->t.sock.fd : -1,
8119 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]8120
8121 for (max = 0; start + max < end; max++)
8122 if (start[max] == '\r' || start[max] == '\n')
8123 break;
8124
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]8125 UBOUND(max, trash.size - trash.len - 3);
8126 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
8127 trash.str[trash.len++] = '\n';
Willy Tarreau89efaed2013-12-13 15:14:55 +0100[diff] [blame]8128 shut_your_big_mouth_gcc(write(1, trash.str, trash.len));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8129}
8130
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8131/*
8132 * Initialize a new HTTP transaction for session <s>. It is assumed that all
8133 * the required fields are properly allocated and that we only need to (re)init
8134 * them. This should be used before processing any new request.
8135 */
8136void http_init_txn(struct session *s)
8137{
8138 struct http_txn *txn = &s->txn;
8139 struct proxy *fe = s->fe;
8140
8141 txn->flags = 0;
8142 txn->status = -1;
8143
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8144 txn->cookie_first_date = 0;
8145 txn->cookie_last_date = 0;
8146
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8147 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8148 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8149 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8150 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8151 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8152 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8153 txn->req.chunk_len = 0LL;
8154 txn->req.body_len = 0LL;
8155 txn->rsp.chunk_len = 0LL;
8156 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8157 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8158 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8159 txn->req.chn = s->req;
8160 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8161
8162 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8163
8164 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8165 if (fe->options2 & PR_O2_REQBUG_OK)
8166 txn->req.err_pos = -1; /* let buggy requests pass */
8167
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8168 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8169 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8170
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8171 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8172 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8173
8174 if (txn->hdr_idx.v)
8175 hdr_idx_init(&txn->hdr_idx);
8176}
8177
8178/* to be used at the end of a transaction */
8179void http_end_txn(struct session *s)
8180{
8181 struct http_txn *txn = &s->txn;
8182
8183 /* these ones will have been dynamically allocated */
8184 pool_free2(pool2_requri, txn->uri);
8185 pool_free2(pool2_capture, txn->cli_cookie);
8186 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8187 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8188 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8189
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8190 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8191 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8192 txn->uri = NULL;
8193 txn->srv_cookie = NULL;
8194 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8195
8196 if (txn->req.cap) {
8197 struct cap_hdr *h;
8198 for (h = s->fe->req_cap; h; h = h->next)
8199 pool_free2(h->pool, txn->req.cap[h->index]);
8200 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8201 }
8202
8203 if (txn->rsp.cap) {
8204 struct cap_hdr *h;
8205 for (h = s->fe->rsp_cap; h; h = h->next)
8206 pool_free2(h->pool, txn->rsp.cap[h->index]);
8207 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8208 }
8209
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8210}
8211
8212/* to be used at the end of a transaction to prepare a new one */
8213void http_reset_txn(struct session *s)
8214{
8215 http_end_txn(s);
8216 http_init_txn(s);
8217
8218 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8219 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8220 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8221 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8222 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8223 /* re-init store persistence */
8224 s->store_count = 0;
Willy Tarreau1f0da242014-01-25 11:01:50 +0100[diff] [blame]8225 s->uniq_id = global.req_count++;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8226
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8227 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8228
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8229 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8230
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8231 /* We must trim any excess data from the response buffer, because we
8232 * may have blocked an invalid response from a server that we don't
8233 * want to accidentely forward once we disable the analysers, nor do
8234 * we want those data to come along with next response. A typical
8235 * example of such data would be from a buggy server responding to
8236 * a HEAD with some data, or sending more than the advertised
8237 * content-length.
8238 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8239 if (unlikely(s->rep->buf->i))
8240 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8241
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8242 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8243 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8244
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8245 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8246 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8247
8248 s->req->rex = TICK_ETERNITY;
8249 s->req->wex = TICK_ETERNITY;
8250 s->req->analyse_exp = TICK_ETERNITY;
8251 s->rep->rex = TICK_ETERNITY;
8252 s->rep->wex = TICK_ETERNITY;
8253 s->rep->analyse_exp = TICK_ETERNITY;
8254}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8255
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8256void free_http_req_rules(struct list *r) {
8257 struct http_req_rule *tr, *pr;
8258
8259 list_for_each_entry_safe(pr, tr, r, list) {
8260 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8261 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8262 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8263
8264 free(pr);
8265 }
8266}
8267
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8268/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8269struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8270{
8271 struct http_req_rule *rule;
8272 int cur_arg;
8273
8274 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8275 if (!rule) {
8276 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8277 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8278 }
8279
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8280 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8281 rule->action = HTTP_REQ_ACT_ALLOW;
8282 cur_arg = 1;
8283 } else if (!strcmp(args[0], "deny")) {
8284 rule->action = HTTP_REQ_ACT_DENY;
8285 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8286 } else if (!strcmp(args[0], "tarpit")) {
8287 rule->action = HTTP_REQ_ACT_TARPIT;
8288 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8289 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8290 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8291 cur_arg = 1;
8292
8293 while(*args[cur_arg]) {
8294 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8295 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8296 cur_arg+=2;
8297 continue;
8298 } else
8299 break;
8300 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8301 } else if (!strcmp(args[0], "set-nice")) {
8302 rule->action = HTTP_REQ_ACT_SET_NICE;
8303 cur_arg = 1;
8304
8305 if (!*args[cur_arg] ||
8306 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8307 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8308 file, linenum, args[0]);
8309 goto out_err;
8310 }
8311 rule->arg.nice = atoi(args[cur_arg]);
8312 if (rule->arg.nice < -1024)
8313 rule->arg.nice = -1024;
8314 else if (rule->arg.nice > 1024)
8315 rule->arg.nice = 1024;
8316 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8317 } else if (!strcmp(args[0], "set-tos")) {
8318#ifdef IP_TOS
8319 char *err;
8320 rule->action = HTTP_REQ_ACT_SET_TOS;
8321 cur_arg = 1;
8322
8323 if (!*args[cur_arg] ||
8324 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8325 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8326 file, linenum, args[0]);
8327 goto out_err;
8328 }
8329
8330 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8331 if (err && *err != '\0') {
8332 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8333 file, linenum, err, args[0]);
8334 goto out_err;
8335 }
8336 cur_arg++;
8337#else
8338 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8339 goto out_err;
8340#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8341 } else if (!strcmp(args[0], "set-mark")) {
8342#ifdef SO_MARK
8343 char *err;
8344 rule->action = HTTP_REQ_ACT_SET_MARK;
8345 cur_arg = 1;
8346
8347 if (!*args[cur_arg] ||
8348 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8349 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8350 file, linenum, args[0]);
8351 goto out_err;
8352 }
8353
8354 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8355 if (err && *err != '\0') {
8356 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8357 file, linenum, err, args[0]);
8358 goto out_err;
8359 }
8360 cur_arg++;
8361 global.last_checks |= LSTCHK_NETADM;
8362#else
8363 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8364 goto out_err;
8365#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8366 } else if (!strcmp(args[0], "set-log-level")) {
8367 rule->action = HTTP_REQ_ACT_SET_LOGL;
8368 cur_arg = 1;
8369
8370 if (!*args[cur_arg] ||
8371 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8372 bad_log_level:
8373 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8374 file, linenum, args[0]);
8375 goto out_err;
8376 }
8377 if (strcmp(args[cur_arg], "silent") == 0)
8378 rule->arg.loglevel = -1;
8379 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8380 goto bad_log_level;
8381 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8382 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8383 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8384 cur_arg = 1;
8385
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8386 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8387 (*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]8388 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8389 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8390 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8391 }
8392
8393 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8394 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8395 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8396
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8397 proxy->conf.args.ctx = ARGC_HRQ;
Willy Tarreau434c57c2013-01-08 01:10:24 +0100[diff] [blame]8398 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8399 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8400 free(proxy->conf.lfs_file);
8401 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8402 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8403 cur_arg += 2;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8404 } else if (strcmp(args[0], "redirect") == 0) {
8405 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]8406 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8407
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8408 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]8409 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8410 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8411 goto out_err;
8412 }
8413
8414 /* this redirect rule might already contain a parsed condition which
8415 * we'll pass to the http-request rule.
8416 */
8417 rule->action = HTTP_REQ_ACT_REDIR;
8418 rule->arg.redir = redir;
8419 rule->cond = redir->cond;
8420 redir->cond = NULL;
8421 cur_arg = 2;
8422 return rule;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8423 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8424 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]8425 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8426 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8427 }
8428
8429 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8430 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8431 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8432
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8433 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8434 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
8435 file, linenum, args[0], errmsg);
8436 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8437 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8438 }
8439 rule->cond = cond;
8440 }
8441 else if (*args[cur_arg]) {
8442 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
8443 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8444 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8445 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8446 }
8447
8448 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8449 out_err:
8450 free(rule);
8451 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8452}
8453
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8454/* parse an "http-respose" rule */
8455struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8456{
8457 struct http_res_rule *rule;
8458 int cur_arg;
8459
8460 rule = calloc(1, sizeof(*rule));
8461 if (!rule) {
8462 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
8463 goto out_err;
8464 }
8465
8466 if (!strcmp(args[0], "allow")) {
8467 rule->action = HTTP_RES_ACT_ALLOW;
8468 cur_arg = 1;
8469 } else if (!strcmp(args[0], "deny")) {
8470 rule->action = HTTP_RES_ACT_DENY;
8471 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8472 } else if (!strcmp(args[0], "set-nice")) {
8473 rule->action = HTTP_RES_ACT_SET_NICE;
8474 cur_arg = 1;
8475
8476 if (!*args[cur_arg] ||
8477 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8478 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
8479 file, linenum, args[0]);
8480 goto out_err;
8481 }
8482 rule->arg.nice = atoi(args[cur_arg]);
8483 if (rule->arg.nice < -1024)
8484 rule->arg.nice = -1024;
8485 else if (rule->arg.nice > 1024)
8486 rule->arg.nice = 1024;
8487 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8488 } else if (!strcmp(args[0], "set-tos")) {
8489#ifdef IP_TOS
8490 char *err;
8491 rule->action = HTTP_RES_ACT_SET_TOS;
8492 cur_arg = 1;
8493
8494 if (!*args[cur_arg] ||
8495 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8496 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8497 file, linenum, args[0]);
8498 goto out_err;
8499 }
8500
8501 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8502 if (err && *err != '\0') {
8503 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8504 file, linenum, err, args[0]);
8505 goto out_err;
8506 }
8507 cur_arg++;
8508#else
8509 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8510 goto out_err;
8511#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8512 } else if (!strcmp(args[0], "set-mark")) {
8513#ifdef SO_MARK
8514 char *err;
8515 rule->action = HTTP_RES_ACT_SET_MARK;
8516 cur_arg = 1;
8517
8518 if (!*args[cur_arg] ||
8519 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8520 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8521 file, linenum, args[0]);
8522 goto out_err;
8523 }
8524
8525 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8526 if (err && *err != '\0') {
8527 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8528 file, linenum, err, args[0]);
8529 goto out_err;
8530 }
8531 cur_arg++;
8532 global.last_checks |= LSTCHK_NETADM;
8533#else
8534 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8535 goto out_err;
8536#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8537 } else if (!strcmp(args[0], "set-log-level")) {
8538 rule->action = HTTP_RES_ACT_SET_LOGL;
8539 cur_arg = 1;
8540
8541 if (!*args[cur_arg] ||
8542 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8543 bad_log_level:
8544 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
8545 file, linenum, args[0]);
8546 goto out_err;
8547 }
8548 if (strcmp(args[cur_arg], "silent") == 0)
8549 rule->arg.loglevel = -1;
8550 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
8551 goto bad_log_level;
8552 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8553 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8554 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
8555 cur_arg = 1;
8556
8557 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8558 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
8559 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
8560 file, linenum, args[0]);
8561 goto out_err;
8562 }
8563
8564 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8565 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8566 LIST_INIT(&rule->arg.hdr_add.fmt);
8567
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8568 proxy->conf.args.ctx = ARGC_HRS;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8569 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8570 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8571 free(proxy->conf.lfs_file);
8572 proxy->conf.lfs_file = strdup(proxy->conf.args.file);
8573 proxy->conf.lfs_line = proxy->conf.args.line;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8574 cur_arg += 2;
8575 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8576 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]8577 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
8578 goto out_err;
8579 }
8580
8581 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8582 struct acl_cond *cond;
8583 char *errmsg = NULL;
8584
8585 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8586 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
8587 file, linenum, args[0], errmsg);
8588 free(errmsg);
8589 goto out_err;
8590 }
8591 rule->cond = cond;
8592 }
8593 else if (*args[cur_arg]) {
8594 Alert("parsing [%s:%d]: 'http-response %s' expects"
8595 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8596 file, linenum, args[0], args[cur_arg]);
8597 goto out_err;
8598 }
8599
8600 return rule;
8601 out_err:
8602 free(rule);
8603 return NULL;
8604}
8605
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8606/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8607 * with <err> filled with the error message. If <use_fmt> is not null, builds a
8608 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8609 */
8610struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8611 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8612{
8613 struct redirect_rule *rule;
8614 int cur_arg;
8615 int type = REDIRECT_TYPE_NONE;
8616 int code = 302;
8617 const char *destination = NULL;
8618 const char *cookie = NULL;
8619 int cookie_set = 0;
8620 unsigned int flags = REDIRECT_FLAG_NONE;
8621 struct acl_cond *cond = NULL;
8622
8623 cur_arg = 0;
8624 while (*(args[cur_arg])) {
8625 if (strcmp(args[cur_arg], "location") == 0) {
8626 if (!*args[cur_arg + 1])
8627 goto missing_arg;
8628
8629 type = REDIRECT_TYPE_LOCATION;
8630 cur_arg++;
8631 destination = args[cur_arg];
8632 }
8633 else if (strcmp(args[cur_arg], "prefix") == 0) {
8634 if (!*args[cur_arg + 1])
8635 goto missing_arg;
8636
8637 type = REDIRECT_TYPE_PREFIX;
8638 cur_arg++;
8639 destination = args[cur_arg];
8640 }
8641 else if (strcmp(args[cur_arg], "scheme") == 0) {
8642 if (!*args[cur_arg + 1])
8643 goto missing_arg;
8644
8645 type = REDIRECT_TYPE_SCHEME;
8646 cur_arg++;
8647 destination = args[cur_arg];
8648 }
8649 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
8650 if (!*args[cur_arg + 1])
8651 goto missing_arg;
8652
8653 cur_arg++;
8654 cookie = args[cur_arg];
8655 cookie_set = 1;
8656 }
8657 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
8658 if (!*args[cur_arg + 1])
8659 goto missing_arg;
8660
8661 cur_arg++;
8662 cookie = args[cur_arg];
8663 cookie_set = 0;
8664 }
8665 else if (strcmp(args[cur_arg], "code") == 0) {
8666 if (!*args[cur_arg + 1])
8667 goto missing_arg;
8668
8669 cur_arg++;
8670 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8671 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8672 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8673 "'%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]8674 args[cur_arg - 1], args[cur_arg]);
8675 return NULL;
8676 }
8677 }
8678 else if (!strcmp(args[cur_arg],"drop-query")) {
8679 flags |= REDIRECT_FLAG_DROP_QS;
8680 }
8681 else if (!strcmp(args[cur_arg],"append-slash")) {
8682 flags |= REDIRECT_FLAG_APPEND_SLASH;
8683 }
8684 else if (strcmp(args[cur_arg], "if") == 0 ||
8685 strcmp(args[cur_arg], "unless") == 0) {
8686 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
8687 if (!cond) {
8688 memprintf(errmsg, "error in condition: %s", *errmsg);
8689 return NULL;
8690 }
8691 break;
8692 }
8693 else {
8694 memprintf(errmsg,
8695 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
8696 args[cur_arg]);
8697 return NULL;
8698 }
8699 cur_arg++;
8700 }
8701
8702 if (type == REDIRECT_TYPE_NONE) {
8703 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
8704 return NULL;
8705 }
8706
8707 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
8708 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]8709 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8710
8711 if (!use_fmt) {
8712 /* old-style static redirect rule */
8713 rule->rdr_str = strdup(destination);
8714 rule->rdr_len = strlen(destination);
8715 }
8716 else {
8717 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8718
8719 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
8720 * if prefix == "/", we don't want to add anything, otherwise it
8721 * makes it hard for the user to configure a self-redirection.
8722 */
8723 proxy->conf.args.ctx = ARGC_RDR;
8724 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
8725 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, 0,
8726 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR);
Willy Tarreau59ad1a22014-01-29 14:39:58 +0100[diff] [blame]8727 free(curproxy->conf.lfs_file);
8728 curproxy->conf.lfs_file = strdup(curproxy->conf.args.file);
8729 curproxy->conf.lfs_line = curproxy->conf.args.line;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8730 }
8731 }
8732
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8733 if (cookie) {
8734 /* depending on cookie_set, either we want to set the cookie, or to clear it.
8735 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
8736 */
8737 rule->cookie_len = strlen(cookie);
8738 if (cookie_set) {
8739 rule->cookie_str = malloc(rule->cookie_len + 10);
8740 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8741 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
8742 rule->cookie_len += 9;
8743 } else {
8744 rule->cookie_str = malloc(rule->cookie_len + 21);
8745 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8746 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
8747 rule->cookie_len += 20;
8748 }
8749 }
8750 rule->type = type;
8751 rule->code = code;
8752 rule->flags = flags;
8753 LIST_INIT(&rule->list);
8754 return rule;
8755
8756 missing_arg:
8757 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
8758 return NULL;
8759}
8760
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8761/************************************************************************/
8762/* The code below is dedicated to ACL parsing and matching */
8763/************************************************************************/
8764
8765
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8766/* This function ensures that the prerequisites for an L7 fetch are ready,
8767 * which means that a request or response is ready. If some data is missing,
8768 * 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]8769 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
8770 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8771 *
8772 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8773 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
8774 * decide whether or not an HTTP message is present ;
8775 * 0 if the requested data cannot be fetched or if it is certain that
8776 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8777 * 1 if an HTTP message is ready
8778 */
8779static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8780smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8781 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8782{
8783 struct http_txn *txn = l7;
8784 struct http_msg *msg = &txn->req;
8785
8786 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8787 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8788 */
8789
8790 if (unlikely(!s || !txn))
8791 return 0;
8792
8793 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8794 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8795
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8796 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8797 if (unlikely(!s->req))
8798 return 0;
8799
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8800 /* If the buffer does not leave enough free space at the end,
8801 * we must first realign it.
8802 */
8803 if (s->req->buf->p > s->req->buf->data &&
8804 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
8805 buffer_slow_realign(s->req->buf);
8806
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8807 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]8808 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8809 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8810
8811 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8812 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8813 http_msg_analyzer(msg, &txn->hdr_idx);
8814
8815 /* Still no valid request ? */
8816 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8817 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8818 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8819 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8820 }
8821 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8822 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8823 return 0;
8824 }
8825
8826 /* OK we just got a valid HTTP request. We have some minor
8827 * preparation to perform so that further checks can rely
8828 * on HTTP tests.
8829 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8830
8831 /* If the request was parsed but was too large, we must absolutely
8832 * return an error so that it is not processed. At the moment this
8833 * cannot happen, but if the parsers are to change in the future,
8834 * we want this check to be maintained.
8835 */
8836 if (unlikely(s->req->buf->i + s->req->buf->p >
8837 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
8838 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8839 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8840 return 1;
8841 }
8842
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8843 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8844 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
8845 s->flags |= SN_REDIRECTABLE;
8846
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8847 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
8848 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8849 }
8850
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8851 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8852 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8853 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8854
8855 /* otherwise everything's ready for the request */
8856 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8857 else {
8858 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8859 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
8860 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8861 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8862 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8863 }
8864
8865 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8866 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8867 return 1;
8868}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8869
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8870#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8871 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]8872
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8873#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8874 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]8875
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8876
8877/* 1. Check on METHOD
8878 * We use the pre-parsed method if it is known, and store its number as an
8879 * integer. If it is unknown, we use the pointer and the length.
8880 */
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]8881static 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]8882{
8883 int len, meth;
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]8884 struct chunk *trash;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8885
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8886 len = strlen(*text);
8887 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8888
8889 pattern->val.i = meth;
8890 if (meth == HTTP_METH_OTHER) {
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]8891 if (usage == PAT_U_COMPILE) {
8892 pattern->ptr.str = strdup(*text);
8893 if (!pattern->ptr.str) {
8894 memprintf(err, "out of memory while loading pattern");
8895 return 0;
8896 }
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8897 }
Thierry FOURNIER0b2fe4a2013-12-06 20:33:50 +0100[diff] [blame]8898 else {
8899 trash = get_trash_chunk();
8900 if (trash->size < len) {
8901 memprintf(err, "no space avalaible in the buffer. expect %d, provides %d",
8902 len, trash->size);
8903 return 0;
8904 }
8905 pattern->ptr.str = trash->str;
8906 }
8907 pattern->expect_type = SMP_T_CSTR;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8908 pattern->len = len;
8909 }
Thierry FOURNIERcc0e0b32013-12-06 16:56:40 +0100[diff] [blame]8910 else
8911 pattern->expect_type = SMP_T_UINT;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8912 return 1;
8913}
8914
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8915/* This function fetches the method of current HTTP request and stores
8916 * it in the global pattern struct as a chunk. There are two possibilities :
8917 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8918 * in <len> and <ptr> is NULL ;
8919 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8920 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8921 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8922 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8923static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8924smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8925 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8926{
8927 int meth;
8928 struct http_txn *txn = l7;
8929
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8930 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8931
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8932 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8933 smp->type = SMP_T_UINT;
8934 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8935 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8936 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8937 /* ensure the indexes are not affected */
8938 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8939 smp->type = SMP_T_CSTR;
8940 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8941 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8942 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8943 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8944 return 1;
8945}
8946
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8947/* See above how the method is stored in the global pattern */
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]8948static enum pat_match_res pat_match_meth(struct sample *smp, struct pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8949{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8950 int icase;
8951
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8952
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8953 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8954 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8955 if (smp->data.uint == pattern->val.i)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8956 return PAT_MATCH;
8957 return PAT_NOMATCH;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8958 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8959
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8960 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8961 if (pattern->val.i != HTTP_METH_OTHER)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8962 return PAT_NOMATCH;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8963
8964 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8965 if (pattern->len != smp->data.str.len)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8966 return PAT_NOMATCH;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8967
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8968 icase = pattern->flags & PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8969 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8970 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8971 return PAT_NOMATCH;
8972 return PAT_MATCH;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8973}
8974
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8975static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8976smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8977 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8978{
8979 struct http_txn *txn = l7;
8980 char *ptr;
8981 int len;
8982
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8983 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8984
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8985 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8986 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8987
8988 while ((len-- > 0) && (*ptr++ != '/'));
8989 if (len <= 0)
8990 return 0;
8991
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8992 smp->type = SMP_T_CSTR;
8993 smp->data.str.str = ptr;
8994 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8995
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8996 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8997 return 1;
8998}
8999
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9000static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9001smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9002 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9003{
9004 struct http_txn *txn = l7;
9005 char *ptr;
9006 int len;
9007
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9008 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9009
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9010 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9011 return 0;
9012
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9013 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9014 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9015
9016 while ((len-- > 0) && (*ptr++ != '/'));
9017 if (len <= 0)
9018 return 0;
9019
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9020 smp->type = SMP_T_CSTR;
9021 smp->data.str.str = ptr;
9022 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9023
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]9024 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9025 return 1;
9026}
9027
9028/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9029static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9030smp_fetch_stcode(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)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9032{
9033 struct http_txn *txn = l7;
9034 char *ptr;
9035 int len;
9036
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9037 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9038
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]9039 if (txn->rsp.msg_state < HTTP_MSG_BODY)
9040 return 0;
9041
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9042 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9043 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9044
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9045 smp->type = SMP_T_UINT;
9046 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9047 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9048 return 1;
9049}
9050
9051/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]9052static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9053smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9054 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9055{
9056 struct http_txn *txn = l7;
9057
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9058 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9059
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9060 smp->type = SMP_T_CSTR;
9061 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9062 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9063 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9064 return 1;
9065}
9066
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9067static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9068smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9069 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9070{
9071 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9072 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9073
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9074 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9075
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9076 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr);
9077 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]9078 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9079
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9080 smp->type = SMP_T_IPV4;
9081 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9082 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9083 return 1;
9084}
9085
9086static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9087smp_fetch_url_port(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9088 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9089{
9090 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9091 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9092
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9093 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9094
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9095 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr);
9096 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
9097 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9098
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]9099 smp->type = SMP_T_UINT;
9100 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]9101 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]9102 return 1;
9103}
9104
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9105/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9106 * Accepts an optional argument of type string containing the header field name,
9107 * and an optional argument of type signed or unsigned integer to request an
9108 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9109 * headers are considered from the first one. It does not stop on commas and
9110 * returns full lines instead (useful for User-Agent or Date for example).
9111 */
9112static int
9113smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9114 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9115{
9116 struct http_txn *txn = l7;
9117 struct hdr_idx *idx = &txn->hdr_idx;
9118 struct hdr_ctx *ctx = smp->ctx.a[0];
9119 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9120 int occ = 0;
9121 const char *name_str = NULL;
9122 int name_len = 0;
9123
9124 if (!ctx) {
9125 /* first call */
9126 ctx = &static_hdr_ctx;
9127 ctx->idx = 0;
9128 smp->ctx.a[0] = ctx;
9129 }
9130
9131 if (args) {
9132 if (args[0].type != ARGT_STR)
9133 return 0;
9134 name_str = args[0].data.str.str;
9135 name_len = args[0].data.str.len;
9136
9137 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9138 occ = args[1].data.uint;
9139 }
9140
9141 CHECK_HTTP_MESSAGE_FIRST();
9142
9143 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
9144 /* search for header from the beginning */
9145 ctx->idx = 0;
9146
9147 if (!occ && !(opt & SMP_OPT_ITERATE))
9148 /* no explicit occurrence and single fetch => last header by default */
9149 occ = -1;
9150
9151 if (!occ)
9152 /* prepare to report multiple occurrences for ACL fetches */
9153 smp->flags |= SMP_F_NOT_LAST;
9154
9155 smp->type = SMP_T_CSTR;
9156 smp->flags |= SMP_F_VOL_HDR;
9157 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
9158 return 1;
9159
9160 smp->flags &= ~SMP_F_NOT_LAST;
9161 return 0;
9162}
9163
9164/* 6. Check on HTTP header count. The number of occurrences is returned.
9165 * Accepts exactly 1 argument of type string. It does not stop on commas and
9166 * returns full lines instead (useful for User-Agent or Date for example).
9167 */
9168static int
9169smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9170 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9171{
9172 struct http_txn *txn = l7;
9173 struct hdr_idx *idx = &txn->hdr_idx;
9174 struct hdr_ctx ctx;
9175 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9176 int cnt;
9177
9178 if (!args || args->type != ARGT_STR)
9179 return 0;
9180
9181 CHECK_HTTP_MESSAGE_FIRST();
9182
9183 ctx.idx = 0;
9184 cnt = 0;
9185 while (http_find_full_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
9186 cnt++;
9187
9188 smp->type = SMP_T_UINT;
9189 smp->data.uint = cnt;
9190 smp->flags = SMP_F_VOL_HDR;
9191 return 1;
9192}
9193
9194/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9195 * Accepts an optional argument of type string containing the header field name,
9196 * and an optional argument of type signed or unsigned integer to request an
9197 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9198 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9199 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9200static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9201smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9202 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9203{
9204 struct http_txn *txn = l7;
9205 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9206 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9207 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]9208 int occ = 0;
9209 const char *name_str = NULL;
9210 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9211
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9212 if (!ctx) {
9213 /* first call */
9214 ctx = &static_hdr_ctx;
9215 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]9216 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9217 }
9218
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9219 if (args) {
9220 if (args[0].type != ARGT_STR)
9221 return 0;
9222 name_str = args[0].data.str.str;
9223 name_len = args[0].data.str.len;
9224
9225 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9226 occ = args[1].data.uint;
9227 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9228
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9229 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9230
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9231 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9232 /* search for header from the beginning */
9233 ctx->idx = 0;
9234
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9235 if (!occ && !(opt & SMP_OPT_ITERATE))
9236 /* no explicit occurrence and single fetch => last header by default */
9237 occ = -1;
9238
9239 if (!occ)
9240 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9241 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]9242
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9243 smp->type = SMP_T_CSTR;
9244 smp->flags |= SMP_F_VOL_HDR;
9245 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]9246 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9247
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9248 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9249 return 0;
9250}
9251
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9252/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9253 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9254 */
9255static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9256smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9257 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9258{
9259 struct http_txn *txn = l7;
9260 struct hdr_idx *idx = &txn->hdr_idx;
9261 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9262 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]9263 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9264
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9265 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9266 return 0;
9267
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9268 CHECK_HTTP_MESSAGE_FIRST();
9269
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9270 ctx.idx = 0;
9271 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9272 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]9273 cnt++;
9274
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9275 smp->type = SMP_T_UINT;
9276 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9277 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9278 return 1;
9279}
9280
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9281/* Fetch an HTTP header's integer value. The integer value is returned. It
9282 * takes a mandatory argument of type string and an optional one of type int
9283 * to designate a specific occurrence. It returns an unsigned integer, which
9284 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9285 */
9286static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9287smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9288 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9289{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9290 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9291
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9292 if (ret > 0) {
9293 smp->type = SMP_T_UINT;
9294 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9295 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9296
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9297 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9298}
9299
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9300/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
9301 * and an optional one of type int to designate a specific occurrence.
9302 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9303 */
9304static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9305smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9306 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9307{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9308 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9309
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9310 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9311 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
9312 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9313 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9314 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9315 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9316 if (smp->data.str.len < temp->size - 1) {
9317 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
9318 temp->str[smp->data.str.len] = '\0';
9319 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
9320 smp->type = SMP_T_IPV6;
9321 break;
9322 }
9323 }
9324 }
9325
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9326 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9327 if (!(smp->flags & SMP_F_NOT_LAST))
9328 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9329 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9330 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9331}
9332
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9333/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
9334 * the first '/' after the possible hostname, and ends before the possible '?'.
9335 */
9336static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9337smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9338 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9339{
9340 struct http_txn *txn = l7;
9341 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9342
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9343 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9344
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9345 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]9346 ptr = http_get_path(txn);
9347 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9348 return 0;
9349
9350 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9351 smp->type = SMP_T_CSTR;
9352 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9353
9354 while (ptr < end && *ptr != '?')
9355 ptr++;
9356
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9357 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9358 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9359 return 1;
9360}
9361
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9362/* This produces a concatenation of the first occurrence of the Host header
9363 * followed by the path component if it begins with a slash ('/'). This means
9364 * that '*' will not be added, resulting in exactly the first Host entry.
9365 * If no Host header is found, then the path is returned as-is. The returned
9366 * 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]9367 * The returned sample is of type string.
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9368 */
9369static int
9370smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9371 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9372{
9373 struct http_txn *txn = l7;
9374 char *ptr, *end, *beg;
9375 struct hdr_ctx ctx;
9376
9377 CHECK_HTTP_MESSAGE_FIRST();
9378
9379 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9380 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]9381 !ctx.vlen)
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9382 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9383
9384 /* 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]9385 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9386 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]9387 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9388 smp->data.str.len = ctx.vlen;
9389
9390 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9391 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]9392 beg = http_get_path(txn);
9393 if (!beg)
9394 beg = end;
9395
9396 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9397
9398 if (beg < ptr && *beg == '/') {
9399 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
9400 smp->data.str.len += ptr - beg;
9401 }
9402
9403 smp->flags = SMP_F_VOL_1ST;
9404 return 1;
9405}
9406
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9407/* This produces a 32-bit hash of the concatenation of the first occurrence of
9408 * the Host header followed by the path component if it begins with a slash ('/').
9409 * This means that '*' will not be added, resulting in exactly the first Host
9410 * 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]9411 * is hashed using the path hash followed by a full avalanche hash and provides a
9412 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9413 * high-traffic sites without having to store whole paths.
9414 */
9415static int
9416smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9417 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9418{
9419 struct http_txn *txn = l7;
9420 struct hdr_ctx ctx;
9421 unsigned int hash = 0;
9422 char *ptr, *beg, *end;
9423 int len;
9424
9425 CHECK_HTTP_MESSAGE_FIRST();
9426
9427 ctx.idx = 0;
9428 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
9429 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
9430 ptr = ctx.line + ctx.val;
9431 len = ctx.vlen;
9432 while (len--)
9433 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
9434 }
9435
9436 /* now retrieve the path */
9437 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
9438 beg = http_get_path(txn);
9439 if (!beg)
9440 beg = end;
9441
9442 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9443
9444 if (beg < ptr && *beg == '/') {
9445 while (beg < ptr)
9446 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
9447 }
9448 hash = full_hash(hash);
9449
9450 smp->type = SMP_T_UINT;
9451 smp->data.uint = hash;
9452 smp->flags = SMP_F_VOL_1ST;
9453 return 1;
9454}
9455
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9456/* 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]9457 * path as returned by smp_fetch_base32(). The idea is to have per-source and
9458 * per-path counters. The result is a binary block from 8 to 20 bytes depending
9459 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9460 * that in environments where IPv6 is insignificant, truncating the output to
9461 * 8 bytes would still work.
9462 */
9463static int
9464smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9465 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9466{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9467 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9468 struct connection *cli_conn = objt_conn(l4->si[0].end);
9469
9470 if (!cli_conn)
9471 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9472
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9473 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9474 return 0;
9475
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9476 temp = get_trash_chunk();
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9477 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
9478 temp->len += sizeof(smp->data.uint);
9479
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9480 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9481 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9482 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]9483 temp->len += 4;
9484 break;
9485 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9486 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]9487 temp->len += 16;
9488 break;
9489 default:
9490 return 0;
9491 }
9492
9493 smp->data.str = *temp;
9494 smp->type = SMP_T_BIN;
9495 return 1;
9496}
9497
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9498static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9499smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9500 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9501{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9502 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9503 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9504 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9505
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9506 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9507
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9508 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9509 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9510 return 1;
9511}
9512
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9513/* return a valid test if the current request is the first one on the connection */
9514static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9515smp_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]9516 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9517{
9518 if (!s)
9519 return 0;
9520
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9521 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9522 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9523 return 1;
9524}
9525
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9526/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9527static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9528smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9529 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9530{
9531
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9532 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9533 return 0;
9534
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9535 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9536
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9537 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9538 return 0;
9539
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9540 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9541 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]9542 return 1;
9543}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9544
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9545/* Accepts exactly 1 argument of type userlist */
9546static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9547smp_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]9548 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9549{
9550
9551 if (!args || args->type != ARGT_USR)
9552 return 0;
9553
9554 CHECK_HTTP_MESSAGE_FIRST();
9555
9556 if (!get_http_auth(l4))
9557 return 0;
9558
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9559 /* pat_match_auth() will need several information at once */
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9560 smp->ctx.a[0] = args->data.usr; /* user list */
9561 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
9562 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
9563
9564 /* if the user does not belong to the userlist or has a wrong password,
9565 * report that it unconditionally does not match. Otherwise we return
9566 * a non-zero integer which will be ignored anyway since all the params
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9567 * that pat_match_auth() will use are in test->ctx.a[0,1,2].
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9568 */
9569 smp->type = SMP_T_BOOL;
9570 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
9571 if (smp->data.uint)
9572 smp->type = SMP_T_UINT;
9573
9574 return 1;
9575}
9576
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9577/* Try to find the next occurrence of a cookie name in a cookie header value.
9578 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
9579 * the cookie value is returned into *value and *value_l, and the function
9580 * returns a pointer to the next pointer to search from if the value was found.
9581 * Otherwise if the cookie was not found, NULL is returned and neither value
9582 * nor value_l are touched. The input <hdr> string should first point to the
9583 * header's value, and the <hdr_end> pointer must point to the first character
9584 * not part of the value. <list> must be non-zero if value may represent a list
9585 * of values (cookie headers). This makes it faster to abort parsing when no
9586 * list is expected.
9587 */
9588static char *
9589extract_cookie_value(char *hdr, const char *hdr_end,
9590 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]9591 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9592{
9593 char *equal, *att_end, *att_beg, *val_beg, *val_end;
9594 char *next;
9595
9596 /* we search at least a cookie name followed by an equal, and more
9597 * generally something like this :
9598 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
9599 */
9600 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
9601 /* Iterate through all cookies on this line */
9602
9603 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
9604 att_beg++;
9605
9606 /* find att_end : this is the first character after the last non
9607 * space before the equal. It may be equal to hdr_end.
9608 */
9609 equal = att_end = att_beg;
9610
9611 while (equal < hdr_end) {
9612 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
9613 break;
9614 if (http_is_spht[(unsigned char)*equal++])
9615 continue;
9616 att_end = equal;
9617 }
9618
9619 /* here, <equal> points to '=', a delimitor or the end. <att_end>
9620 * is between <att_beg> and <equal>, both may be identical.
9621 */
9622
9623 /* look for end of cookie if there is an equal sign */
9624 if (equal < hdr_end && *equal == '=') {
9625 /* look for the beginning of the value */
9626 val_beg = equal + 1;
9627 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
9628 val_beg++;
9629
9630 /* find the end of the value, respecting quotes */
9631 next = find_cookie_value_end(val_beg, hdr_end);
9632
9633 /* make val_end point to the first white space or delimitor after the value */
9634 val_end = next;
9635 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
9636 val_end--;
9637 } else {
9638 val_beg = val_end = next = equal;
9639 }
9640
9641 /* We have nothing to do with attributes beginning with '$'. However,
9642 * they will automatically be removed if a header before them is removed,
9643 * since they're supposed to be linked together.
9644 */
9645 if (*att_beg == '$')
9646 continue;
9647
9648 /* Ignore cookies with no equal sign */
9649 if (equal == next)
9650 continue;
9651
9652 /* Now we have the cookie name between att_beg and att_end, and
9653 * its value between val_beg and val_end.
9654 */
9655
9656 if (att_end - att_beg == cookie_name_l &&
9657 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
9658 /* let's return this value and indicate where to go on from */
9659 *value = val_beg;
9660 *value_l = val_end - val_beg;
9661 return next + 1;
9662 }
9663
9664 /* Set-Cookie headers only have the name in the first attr=value part */
9665 if (!list)
9666 break;
9667 }
9668
9669 return NULL;
9670}
9671
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]9672/* Fetch a captured HTTP request header. The index is the position of
9673 * the "capture" option in the configuration file
9674 */
9675static int
9676smp_fetch_capture_header_req(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9677 const struct arg *args, struct sample *smp, const char *kw)
9678{
9679 struct proxy *fe = l4->fe;
9680 struct http_txn *txn = l7;
9681 int idx;
9682
9683 if (!args || args->type != ARGT_UINT)
9684 return 0;
9685
9686 idx = args->data.uint;
9687
9688 if (idx > (fe->nb_req_cap - 1) || txn->req.cap == NULL || txn->req.cap[idx] == NULL)
9689 return 0;
9690
9691 smp->type = SMP_T_CSTR;
9692 smp->data.str.str = txn->req.cap[idx];
9693 smp->data.str.len = strlen(txn->req.cap[idx]);
9694
9695 return 1;
9696}
9697
9698/* Fetch a captured HTTP response header. The index is the position of
9699 * the "capture" option in the configuration file
9700 */
9701static int
9702smp_fetch_capture_header_res(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
9703 const struct arg *args, struct sample *smp, const char *kw)
9704{
9705 struct proxy *fe = l4->fe;
9706 struct http_txn *txn = l7;
9707 int idx;
9708
9709 if (!args || args->type != ARGT_UINT)
9710 return 0;
9711
9712 idx = args->data.uint;
9713
9714 if (idx > (fe->nb_rsp_cap - 1) || txn->rsp.cap == NULL || txn->rsp.cap[idx] == NULL)
9715 return 0;
9716
9717 smp->type = SMP_T_CSTR;
9718 smp->data.str.str = txn->rsp.cap[idx];
9719 smp->data.str.len = strlen(txn->rsp.cap[idx]);
9720
9721 return 1;
9722}
9723
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9724/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9725 * 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]9726 * 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]9727 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9728 * 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]9729 * Accepts exactly 1 argument of type string. If the input options indicate
9730 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]9731 * The returned sample is of type CSTR.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9732 */
9733static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9734smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9735 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9736{
9737 struct http_txn *txn = l7;
9738 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9739 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9740 const struct http_msg *msg;
9741 const char *hdr_name;
9742 int hdr_name_len;
9743 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9744 int occ = 0;
9745 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9746
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9747 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9748 return 0;
9749
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9750 if (!ctx) {
9751 /* first call */
9752 ctx = &static_hdr_ctx;
9753 ctx->idx = 0;
9754 smp->ctx.a[2] = ctx;
9755 }
9756
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9757 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9758
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9759 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9760 msg = &txn->req;
9761 hdr_name = "Cookie";
9762 hdr_name_len = 6;
9763 } else {
9764 msg = &txn->rsp;
9765 hdr_name = "Set-Cookie";
9766 hdr_name_len = 10;
9767 }
9768
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9769 if (!occ && !(opt & SMP_OPT_ITERATE))
9770 /* no explicit occurrence and single fetch => last cookie by default */
9771 occ = -1;
9772
9773 /* OK so basically here, either we want only one value and it's the
9774 * last one, or we want to iterate over all of them and we fetch the
9775 * next one.
9776 */
9777
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9778 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9779 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9780 /* search for the header from the beginning, we must first initialize
9781 * the search parameters.
9782 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9783 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9784 ctx->idx = 0;
9785 }
9786
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9787 smp->flags |= SMP_F_VOL_HDR;
9788
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9789 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9790 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
9791 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9792 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
9793 goto out;
9794
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9795 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9796 continue;
9797
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9798 smp->ctx.a[0] = ctx->line + ctx->val;
9799 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9800 }
9801
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9802 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9803 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]9804 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9805 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9806 &smp->data.str.str,
9807 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9808 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9809 found = 1;
9810 if (occ >= 0) {
9811 /* one value was returned into smp->data.str.{str,len} */
9812 smp->flags |= SMP_F_NOT_LAST;
9813 return 1;
9814 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9815 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9816 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9817 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9818 /* all cookie headers and values were scanned. If we're looking for the
9819 * last occurrence, we may return it now.
9820 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9821 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9822 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9823 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9824}
9825
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9826/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9827 * 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]9828 * multiple cookies may be parsed on the same line. The returned sample is of
9829 * type UINT. Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9830 */
9831static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9832smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9833 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9834{
9835 struct http_txn *txn = l7;
9836 struct hdr_idx *idx = &txn->hdr_idx;
9837 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9838 const struct http_msg *msg;
9839 const char *hdr_name;
9840 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9841 int cnt;
9842 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9843 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9844
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9845 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9846 return 0;
9847
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9848 CHECK_HTTP_MESSAGE_FIRST();
9849
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9850 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9851 msg = &txn->req;
9852 hdr_name = "Cookie";
9853 hdr_name_len = 6;
9854 } else {
9855 msg = &txn->rsp;
9856 hdr_name = "Set-Cookie";
9857 hdr_name_len = 10;
9858 }
9859
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9860 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]9861 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9862 ctx.idx = 0;
9863 cnt = 0;
9864
9865 while (1) {
9866 /* Note: val_beg == NULL every time we need to fetch a new header */
9867 if (!val_beg) {
9868 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
9869 break;
9870
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9871 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9872 continue;
9873
9874 val_beg = ctx.line + ctx.val;
9875 val_end = val_beg + ctx.vlen;
9876 }
9877
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9878 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9879 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9880 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9881 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9882 &smp->data.str.str,
9883 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9884 cnt++;
9885 }
9886 }
9887
Willy Tarreaub169eba2013-12-16 15:14:43 +0100[diff] [blame]9888 smp->type = SMP_T_UINT;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9889 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9890 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9891 return 1;
9892}
9893
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9894/* Fetch an cookie's integer value. The integer value is returned. It
9895 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
9896 */
9897static int
9898smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9899 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9900{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9901 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9902
9903 if (ret > 0) {
9904 smp->type = SMP_T_UINT;
9905 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9906 }
9907
9908 return ret;
9909}
9910
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9911/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9912/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9913/************************************************************************/
9914
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9915/*
9916 * Given a path string and its length, find the position of beginning of the
9917 * query string. Returns NULL if no query string is found in the path.
9918 *
9919 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
9920 *
9921 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
9922 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9923static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9924{
9925 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]9926
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9927 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9928 return p ? p + 1 : NULL;
9929}
9930
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9931static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9932{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9933 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9934}
9935
9936/*
9937 * Given a url parameter, find the starting position of the first occurence,
9938 * or NULL if the parameter is not found.
9939 *
9940 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
9941 * the function will return query_string+8.
9942 */
9943static char*
9944find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9945 char* url_param_name, size_t url_param_name_l,
9946 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9947{
9948 char *pos, *last;
9949
9950 pos = query_string;
9951 last = query_string + query_string_l - url_param_name_l - 1;
9952
9953 while (pos <= last) {
9954 if (pos[url_param_name_l] == '=') {
9955 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
9956 return pos;
9957 pos += url_param_name_l + 1;
9958 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9959 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9960 pos++;
9961 pos++;
9962 }
9963 return NULL;
9964}
9965
9966/*
9967 * Given a url parameter name, returns its value and size into *value and
9968 * *value_l respectively, and returns non-zero. If the parameter is not found,
9969 * zero is returned and value/value_l are not touched.
9970 */
9971static int
9972find_url_param_value(char* path, size_t path_l,
9973 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9974 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9975{
9976 char *query_string, *qs_end;
9977 char *arg_start;
9978 char *value_start, *value_end;
9979
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9980 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9981 if (!query_string)
9982 return 0;
9983
9984 qs_end = path + path_l;
9985 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9986 url_param_name, url_param_name_l,
9987 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9988 if (!arg_start)
9989 return 0;
9990
9991 value_start = arg_start + url_param_name_l + 1;
9992 value_end = value_start;
9993
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9994 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9995 value_end++;
9996
9997 *value = value_start;
9998 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]9999 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10000}
10001
10002static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10003smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10004 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10005{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10006 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10007 struct http_txn *txn = l7;
10008 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10009
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10010 if (!args || args[0].type != ARGT_STR ||
10011 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10012 return 0;
10013
10014 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10015
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]10016 if (args[1].type)
10017 delim = *args[1].data.str.str;
10018
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]10019 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]10020 args->data.str.str, args->data.str.len,
10021 &smp->data.str.str, &smp->data.str.len,
10022 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10023 return 0;
10024
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]10025 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10026 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]10027 return 1;
10028}
10029
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]10030/* Return the signed integer value for the specified url parameter (see url_param
10031 * above).
10032 */
10033static int
10034smp_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]10035 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]10036{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]10037 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]10038
10039 if (ret > 0) {
10040 smp->type = SMP_T_UINT;
10041 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
10042 }
10043
10044 return ret;
10045}
10046
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10047/* This produces a 32-bit hash of the concatenation of the first occurrence of
10048 * the Host header followed by the path component if it begins with a slash ('/').
10049 * This means that '*' will not be added, resulting in exactly the first Host
10050 * entry. If no Host header is found, then the path is used. The resulting value
10051 * is hashed using the url hash followed by a full avalanche hash and provides a
10052 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
10053 * high-traffic sites without having to store whole paths.
10054 * this differs from the base32 functions in that it includes the url parameters
10055 * as well as the path
10056 */
10057static int
10058smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]10059 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10060{
10061 struct http_txn *txn = l7;
10062 struct hdr_ctx ctx;
10063 unsigned int hash = 0;
10064 char *ptr, *beg, *end;
10065 int len;
10066
10067 CHECK_HTTP_MESSAGE_FIRST();
10068
10069 ctx.idx = 0;
10070 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
10071 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
10072 ptr = ctx.line + ctx.val;
10073 len = ctx.vlen;
10074 while (len--)
10075 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
10076 }
10077
10078 /* now retrieve the path */
10079 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
10080 beg = http_get_path(txn);
10081 if (!beg)
10082 beg = end;
10083
10084 for (ptr = beg; ptr < end ; ptr++);
10085
10086 if (beg < ptr && *beg == '/') {
10087 while (beg < ptr)
10088 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
10089 }
10090 hash = full_hash(hash);
10091
10092 smp->type = SMP_T_UINT;
10093 smp->data.uint = hash;
10094 smp->flags = SMP_F_VOL_1ST;
10095 return 1;
10096}
10097
10098/* This concatenates the source address with the 32-bit hash of the Host and
10099 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
10100 * per-url counters. The result is a binary block from 8 to 20 bytes depending
10101 * on the source address length. The URL hash is stored before the address so
10102 * that in environments where IPv6 is insignificant, truncating the output to
10103 * 8 bytes would still work.
10104 */
10105static int
10106smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]10107 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10108{
10109 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10110 struct connection *cli_conn = objt_conn(l4->si[0].end);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10111
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]10112 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10113 return 0;
10114
10115 temp = get_trash_chunk();
10116 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
10117 temp->len += sizeof(smp->data.uint);
10118
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10119 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10120 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10121 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]10122 temp->len += 4;
10123 break;
10124 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]10125 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]10126 temp->len += 16;
10127 break;
10128 default:
10129 return 0;
10130 }
10131
10132 smp->data.str = *temp;
10133 smp->type = SMP_T_BIN;
10134 return 1;
10135}
10136
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10137/* This function is used to validate the arguments passed to any "hdr" fetch
10138 * keyword. These keywords support an optional positive or negative occurrence
10139 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
10140 * is assumed that the types are already the correct ones. Returns 0 on error,
10141 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
10142 * error message in case of error, that the caller is responsible for freeing.
10143 * The initial location must either be freeable or NULL.
10144 */
10145static int val_hdr(struct arg *arg, char **err_msg)
10146{
10147 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]10148 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]10149 return 0;
10150 }
10151 return 1;
10152}
10153
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10154/* takes an UINT value on input supposed to represent the time since EPOCH,
10155 * adds an optional offset found in args[0] and emits a string representing
10156 * the date in RFC-1123/5322 format.
10157 */
10158static int sample_conv_http_date(const struct arg *args, struct sample *smp)
10159{
10160 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
10161 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
10162 struct chunk *temp;
10163 struct tm *tm;
10164 time_t curr_date = smp->data.uint;
10165
10166 /* add offset */
10167 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
10168 curr_date += args[0].data.sint;
10169
10170 tm = gmtime(&curr_date);
10171
10172 temp = get_trash_chunk();
10173 temp->len = snprintf(temp->str, temp->size - temp->len,
10174 "%s, %02d %s %04d %02d:%02d:%02d GMT",
10175 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
10176 tm->tm_hour, tm->tm_min, tm->tm_sec);
10177
10178 smp->data.str = *temp;
10179 smp->type = SMP_T_STR;
10180 return 1;
10181}
10182
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10183/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10184/* All supported ACL keywords must be declared here. */
10185/************************************************************************/
10186
10187/* Note: must not be declared <const> as its list will be overwritten.
10188 * Please take care of keeping this list alphabetically sorted.
10189 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]10190static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10191 { "base", "base", pat_parse_str, pat_match_str },
10192 { "base_beg", "base", pat_parse_str, pat_match_beg },
10193 { "base_dir", "base", pat_parse_str, pat_match_dir },
10194 { "base_dom", "base", pat_parse_str, pat_match_dom },
10195 { "base_end", "base", pat_parse_str, pat_match_end },
10196 { "base_len", "base", pat_parse_int, pat_match_len },
10197 { "base_reg", "base", pat_parse_reg, pat_match_reg },
10198 { "base_sub", "base", pat_parse_str, pat_match_sub },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]10199
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10200 { "cook", "req.cook", pat_parse_str, pat_match_str },
10201 { "cook_beg", "req.cook", pat_parse_str, pat_match_beg },
10202 { "cook_dir", "req.cook", pat_parse_str, pat_match_dir },
10203 { "cook_dom", "req.cook", pat_parse_str, pat_match_dom },
10204 { "cook_end", "req.cook", pat_parse_str, pat_match_end },
10205 { "cook_len", "req.cook", pat_parse_int, pat_match_len },
10206 { "cook_reg", "req.cook", pat_parse_reg, pat_match_reg },
10207 { "cook_sub", "req.cook", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10208
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10209 { "hdr", "req.hdr", pat_parse_str, pat_match_str },
10210 { "hdr_beg", "req.hdr", pat_parse_str, pat_match_beg },
10211 { "hdr_dir", "req.hdr", pat_parse_str, pat_match_dir },
10212 { "hdr_dom", "req.hdr", pat_parse_str, pat_match_dom },
10213 { "hdr_end", "req.hdr", pat_parse_str, pat_match_end },
10214 { "hdr_len", "req.hdr", pat_parse_int, pat_match_len },
10215 { "hdr_reg", "req.hdr", pat_parse_reg, pat_match_reg },
10216 { "hdr_sub", "req.hdr", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10217
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10218 { "http_auth_group", NULL, pat_parse_strcat, pat_match_auth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10219
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10220 { "method", NULL, pat_parse_meth, pat_match_meth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10221
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10222 { "path", "path", pat_parse_str, pat_match_str },
10223 { "path_beg", "path", pat_parse_str, pat_match_beg },
10224 { "path_dir", "path", pat_parse_str, pat_match_dir },
10225 { "path_dom", "path", pat_parse_str, pat_match_dom },
10226 { "path_end", "path", pat_parse_str, pat_match_end },
10227 { "path_len", "path", pat_parse_int, pat_match_len },
10228 { "path_reg", "path", pat_parse_reg, pat_match_reg },
10229 { "path_sub", "path", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10230
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10231 { "req_ver", "req.ver", pat_parse_str, pat_match_str },
10232 { "resp_ver", "res.ver", pat_parse_str, pat_match_str },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10233
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10234 { "scook", "res.cook", pat_parse_str, pat_match_str },
10235 { "scook_beg", "res.cook", pat_parse_str, pat_match_beg },
10236 { "scook_dir", "res.cook", pat_parse_str, pat_match_dir },
10237 { "scook_dom", "res.cook", pat_parse_str, pat_match_dom },
10238 { "scook_end", "res.cook", pat_parse_str, pat_match_end },
10239 { "scook_len", "res.cook", pat_parse_int, pat_match_len },
10240 { "scook_reg", "res.cook", pat_parse_reg, pat_match_reg },
10241 { "scook_sub", "res.cook", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10242
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10243 { "shdr", "res.hdr", pat_parse_str, pat_match_str },
10244 { "shdr_beg", "res.hdr", pat_parse_str, pat_match_beg },
10245 { "shdr_dir", "res.hdr", pat_parse_str, pat_match_dir },
10246 { "shdr_dom", "res.hdr", pat_parse_str, pat_match_dom },
10247 { "shdr_end", "res.hdr", pat_parse_str, pat_match_end },
10248 { "shdr_len", "res.hdr", pat_parse_int, pat_match_len },
10249 { "shdr_reg", "res.hdr", pat_parse_reg, pat_match_reg },
10250 { "shdr_sub", "res.hdr", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10251
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10252 { "url", "url", pat_parse_str, pat_match_str },
10253 { "url_beg", "url", pat_parse_str, pat_match_beg },
10254 { "url_dir", "url", pat_parse_str, pat_match_dir },
10255 { "url_dom", "url", pat_parse_str, pat_match_dom },
10256 { "url_end", "url", pat_parse_str, pat_match_end },
10257 { "url_len", "url", pat_parse_int, pat_match_len },
10258 { "url_reg", "url", pat_parse_reg, pat_match_reg },
10259 { "url_sub", "url", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10260
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10261 { "urlp", "urlp", pat_parse_str, pat_match_str },
10262 { "urlp_beg", "urlp", pat_parse_str, pat_match_beg },
10263 { "urlp_dir", "urlp", pat_parse_str, pat_match_dir },
10264 { "urlp_dom", "urlp", pat_parse_str, pat_match_dom },
10265 { "urlp_end", "urlp", pat_parse_str, pat_match_end },
10266 { "urlp_len", "urlp", pat_parse_int, pat_match_len },
10267 { "urlp_reg", "urlp", pat_parse_reg, pat_match_reg },
10268 { "urlp_sub", "urlp", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10269
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]10270 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10271}};
10272
10273/************************************************************************/
10274/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10275/************************************************************************/
10276/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]10277static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10278 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10279 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10280 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
10281
William Lallemanda43ba4e2014-01-28 18:14:25 +0100[diff] [blame]10282 /* capture are allocated and are permanent in the session */
10283 { "capture.req.hdr", smp_fetch_capture_header_req, ARG1(1, UINT), NULL, SMP_T_CSTR, SMP_USE_HRQHP },
10284 { "capture.res.hdr", smp_fetch_capture_header_res, ARG1(1, UINT), NULL, SMP_T_CSTR, SMP_USE_HRSHP },
10285
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10286 /* cookie is valid in both directions (eg: for "stick ...") but cook*
10287 * are only here to match the ACL's name, are request-only and are used
10288 * for ACL compatibility only.
10289 */
10290 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10291 { "cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
10292 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10293 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10294
10295 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
10296 * only here to match the ACL's name, are request-only and are used for
10297 * ACL compatibility only.
10298 */
10299 { "hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
10300 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10301 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10302 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10303
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]10304 { "http_auth", smp_fetch_http_auth, ARG1(1,USR), NULL, SMP_T_BOOL, SMP_USE_HRQHV },
10305 { "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]10306 { "http_first_req", smp_fetch_http_first_req, 0, NULL, SMP_T_BOOL, SMP_USE_HRQHP },
10307 { "method", smp_fetch_meth, 0, NULL, SMP_T_UINT, SMP_USE_HRQHP },
10308 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10309
10310 /* HTTP protocol on the request path */
10311 { "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]10312 { "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]10313
10314 /* HTTP version on the request path */
10315 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10316 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10317
10318 /* HTTP version on the response path */
10319 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_CSTR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10320 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10321
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10322 /* explicit req.{cook,hdr} are used to force the fetch direction to be request-only */
10323 { "req.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10324 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10325 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10326
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10327 { "req.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV },
10328 { "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]10329 { "req.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV },
10330 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10331 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10332 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10333
10334 /* explicit req.{cook,hdr} are used to force the fetch direction to be response-only */
10335 { "res.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10336 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10337 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10338
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10339 { "res.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10340 { "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]10341 { "res.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10342 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10343 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10344 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10345
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10346 /* scook is valid only on the response and is used for ACL compatibility */
10347 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10348 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10349 { "scook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10350 { "set-cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV }, /* deprecated */
10351
10352 /* shdr is valid only on the response and is used for ACL compatibility */
10353 { "shdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10354 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10355 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10356 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10357
10358 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
10359 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10360 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10361 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10362 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
10363 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10364 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10365 { "urlp" , smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10366 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10367 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10368}};
10369
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10370
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10371/* Note: must not be declared <const> as its list will be overwritten */
10372static struct sample_conv_kw_list sample_conv_kws = {ILH, {
10373 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR },
10374 { NULL, NULL, 0, 0, 0 },
10375}};
10376
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10377__attribute__((constructor))
10378static void __http_protocol_init(void)
10379{
10380 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10381 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10382 sample_register_convs(&sample_conv_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10383}
10384
10385
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]10386/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]10387 * Local variables:
10388 * c-indent-level: 8
10389 * c-basic-offset: 8
10390 * End:
10391 */