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git01.mediatek.com / haproxy / ad5281ca0429c2398022a5eb9109e4c79c7f1ed0 / . / src / proto_http.c
blob: a06b0ec8ec9455f1c0c7d1a7fef0f97031b79cb4 [file] [log] [blame]
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1/*
2 * HTTP protocol analyzer
3 *
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]4 * Copyright 2000-2011 Willy Tarreau <w@1wt.eu>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 *
11 */
12
13#include <ctype.h>
14#include <errno.h>
15#include <fcntl.h>
16#include <stdio.h>
17#include <stdlib.h>
18#include <string.h>
19#include <syslog.h>
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]20#include <time.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]21
22#include <sys/socket.h>
23#include <sys/stat.h>
24#include <sys/types.h>
25
Willy Tarreaub05405a2012-01-23 15:35:52 +0100[diff] [blame]26#include <netinet/tcp.h>
27
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]28#include <common/appsession.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]29#include <common/base64.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]30#include <common/chunk.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]31#include <common/compat.h>
32#include <common/config.h>
Willy Tarreaua4cd1f52006-12-16 19:57:26 +0100[diff] [blame]33#include <common/debug.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]34#include <common/memory.h>
35#include <common/mini-clist.h>
36#include <common/standard.h>
Willy Tarreau0c303ee2008-07-07 00:09:58 +0200[diff] [blame]37#include <common/ticks.h>
Willy Tarreau2dd0d472006-06-29 17:53:05 +0200[diff] [blame]38#include <common/time.h>
39#include <common/uri_auth.h>
40#include <common/version.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]41
42#include <types/capture.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]43#include <types/global.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]44
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]45#include <proto/acl.h>
Willy Tarreau61612d42012-04-19 18:42:05 +0200[diff] [blame]46#include <proto/arg.h>
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]47#include <proto/auth.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]48#include <proto/backend.h>
Willy Tarreauc7e42382012-08-24 19:22:53 +0200[diff] [blame]49#include <proto/channel.h>
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]50#include <proto/checks.h>
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]51#include <proto/compression.h>
Willy Tarreau91861262007-10-17 17:06:05 +0200[diff] [blame]52#include <proto/dumpstats.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]53#include <proto/fd.h>
Willy Tarreau03fa5df2010-05-24 21:02:37 +0200[diff] [blame]54#include <proto/frontend.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]55#include <proto/log.h>
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]56#include <proto/hdr_idx.h>
Thierry FOURNIERed66c292013-11-28 11:05:19 +0100[diff] [blame]57#include <proto/pattern.h>
Willy Tarreaub6866442008-07-14 23:54:42 +0200[diff] [blame]58#include <proto/proto_tcp.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]59#include <proto/proto_http.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]60#include <proto/proxy.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]61#include <proto/queue.h>
Willy Tarreaucd3b0942012-04-27 21:52:18 +0200[diff] [blame]62#include <proto/sample.h>
Willy Tarreau7f062c42009-03-05 18:43:00 +0100[diff] [blame]63#include <proto/server.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]64#include <proto/session.h>
Willy Tarreaucff64112008-11-03 06:26:53 +0100[diff] [blame]65#include <proto/stream_interface.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]66#include <proto/task.h>
67
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]68const char HTTP_100[] =
69 "HTTP/1.1 100 Continue\r\n\r\n";
70
71const struct chunk http_100_chunk = {
72 .str = (char *)&HTTP_100,
73 .len = sizeof(HTTP_100)-1
74};
75
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]76/* Warning: no "connection" header is provided with the 3xx messages below */
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]77const char *HTTP_301 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]78 "HTTP/1.1 301 Moved Permanently\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]79 "Content-length: 0\r\n"
Willy Tarreaub463dfb2008-06-07 23:08:56 +0200[diff] [blame]80 "Location: "; /* not terminated since it will be concatenated with the URL */
81
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]82const char *HTTP_302 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]83 "HTTP/1.1 302 Found\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]84 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]85 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]86 "Location: "; /* not terminated since it will be concatenated with the URL */
87
88/* same as 302 except that the browser MUST retry with the GET method */
89const char *HTTP_303 =
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]90 "HTTP/1.1 303 See Other\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]91 "Cache-Control: no-cache\r\n"
Willy Tarreaubc5aa192010-01-03 15:09:36 +0100[diff] [blame]92 "Content-length: 0\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]93 "Location: "; /* not terminated since it will be concatenated with the URL */
94
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]95
96/* same as 302 except that the browser MUST retry with the same method */
97const char *HTTP_307 =
98 "HTTP/1.1 307 Temporary Redirect\r\n"
99 "Cache-Control: no-cache\r\n"
100 "Content-length: 0\r\n"
101 "Location: "; /* not terminated since it will be concatenated with the URL */
102
103/* same as 301 except that the browser MUST retry with the same method */
104const char *HTTP_308 =
105 "HTTP/1.1 308 Permanent Redirect\r\n"
106 "Content-length: 0\r\n"
107 "Location: "; /* not terminated since it will be concatenated with the URL */
108
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]109/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
110const char *HTTP_401_fmt =
111 "HTTP/1.0 401 Unauthorized\r\n"
112 "Cache-Control: no-cache\r\n"
113 "Connection: close\r\n"
Willy Tarreau791d66d2006-07-08 16:53:38 +0200[diff] [blame]114 "Content-Type: text/html\r\n"
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]115 "WWW-Authenticate: Basic realm=\"%s\"\r\n"
116 "\r\n"
117 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
118
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]119const char *HTTP_407_fmt =
120 "HTTP/1.0 407 Unauthorized\r\n"
121 "Cache-Control: no-cache\r\n"
122 "Connection: close\r\n"
123 "Content-Type: text/html\r\n"
124 "Proxy-Authenticate: Basic realm=\"%s\"\r\n"
125 "\r\n"
126 "<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
127
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]128
129const int http_err_codes[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]130 [HTTP_ERR_200] = 200, /* used by "monitor-uri" */
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]131 [HTTP_ERR_400] = 400,
132 [HTTP_ERR_403] = 403,
133 [HTTP_ERR_408] = 408,
134 [HTTP_ERR_500] = 500,
135 [HTTP_ERR_502] = 502,
136 [HTTP_ERR_503] = 503,
137 [HTTP_ERR_504] = 504,
138};
139
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]140static const char *http_err_msgs[HTTP_ERR_SIZE] = {
Willy Tarreauae94d4d2011-05-11 16:28:49 +0200[diff] [blame]141 [HTTP_ERR_200] =
142 "HTTP/1.0 200 OK\r\n"
143 "Cache-Control: no-cache\r\n"
144 "Connection: close\r\n"
145 "Content-Type: text/html\r\n"
146 "\r\n"
147 "<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
148
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]149 [HTTP_ERR_400] =
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]150 "HTTP/1.0 400 Bad request\r\n"
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]151 "Cache-Control: no-cache\r\n"
152 "Connection: close\r\n"
153 "Content-Type: text/html\r\n"
154 "\r\n"
155 "<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
156
157 [HTTP_ERR_403] =
158 "HTTP/1.0 403 Forbidden\r\n"
159 "Cache-Control: no-cache\r\n"
160 "Connection: close\r\n"
161 "Content-Type: text/html\r\n"
162 "\r\n"
163 "<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
164
165 [HTTP_ERR_408] =
166 "HTTP/1.0 408 Request Time-out\r\n"
167 "Cache-Control: no-cache\r\n"
168 "Connection: close\r\n"
169 "Content-Type: text/html\r\n"
170 "\r\n"
171 "<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
172
173 [HTTP_ERR_500] =
174 "HTTP/1.0 500 Server Error\r\n"
175 "Cache-Control: no-cache\r\n"
176 "Connection: close\r\n"
177 "Content-Type: text/html\r\n"
178 "\r\n"
179 "<html><body><h1>500 Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
180
181 [HTTP_ERR_502] =
182 "HTTP/1.0 502 Bad Gateway\r\n"
183 "Cache-Control: no-cache\r\n"
184 "Connection: close\r\n"
185 "Content-Type: text/html\r\n"
186 "\r\n"
187 "<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
188
189 [HTTP_ERR_503] =
190 "HTTP/1.0 503 Service Unavailable\r\n"
191 "Cache-Control: no-cache\r\n"
192 "Connection: close\r\n"
193 "Content-Type: text/html\r\n"
194 "\r\n"
195 "<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
196
197 [HTTP_ERR_504] =
198 "HTTP/1.0 504 Gateway Time-out\r\n"
199 "Cache-Control: no-cache\r\n"
200 "Connection: close\r\n"
201 "Content-Type: text/html\r\n"
202 "\r\n"
203 "<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
204
205};
206
Cyril Bonté19979e12012-04-04 12:57:21 +0200[diff] [blame]207/* status codes available for the stats admin page (strictly 4 chars length) */
208const char *stat_status_codes[STAT_STATUS_SIZE] = {
209 [STAT_STATUS_DENY] = "DENY",
210 [STAT_STATUS_DONE] = "DONE",
211 [STAT_STATUS_ERRP] = "ERRP",
212 [STAT_STATUS_EXCD] = "EXCD",
213 [STAT_STATUS_NONE] = "NONE",
214 [STAT_STATUS_PART] = "PART",
215 [STAT_STATUS_UNKN] = "UNKN",
216};
217
218
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]219/* We must put the messages here since GCC cannot initialize consts depending
220 * on strlen().
221 */
222struct chunk http_err_chunks[HTTP_ERR_SIZE];
223
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]224/* this struct is used between calls to smp_fetch_hdr() or smp_fetch_cookie() */
225static struct hdr_ctx static_hdr_ctx;
226
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]227#define FD_SETS_ARE_BITFIELDS
228#ifdef FD_SETS_ARE_BITFIELDS
229/*
230 * This map is used with all the FD_* macros to check whether a particular bit
231 * is set or not. Each bit represents an ACSII code. FD_SET() sets those bytes
232 * which should be encoded. When FD_ISSET() returns non-zero, it means that the
233 * byte should be encoded. Be careful to always pass bytes from 0 to 255
234 * exclusively to the macros.
235 */
236fd_set hdr_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
237fd_set url_encode_map[(sizeof(fd_set) > (256/8)) ? 1 : ((256/8) / sizeof(fd_set))];
238
239#else
240#error "Check if your OS uses bitfields for fd_sets"
241#endif
242
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]243void init_proto_http()
244{
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]245 int i;
246 char *tmp;
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]247 int msg;
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]248
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]249 for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
250 if (!http_err_msgs[msg]) {
251 Alert("Internal error: no message defined for HTTP return code %d. Aborting.\n", msg);
252 abort();
253 }
254
255 http_err_chunks[msg].str = (char *)http_err_msgs[msg];
256 http_err_chunks[msg].len = strlen(http_err_msgs[msg]);
257 }
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]258
259 /* initialize the log header encoding map : '{|}"#' should be encoded with
260 * '#' as prefix, as well as non-printable characters ( <32 or >= 127 ).
261 * URL encoding only requires '"', '#' to be encoded as well as non-
262 * printable characters above.
263 */
264 memset(hdr_encode_map, 0, sizeof(hdr_encode_map));
265 memset(url_encode_map, 0, sizeof(url_encode_map));
266 for (i = 0; i < 32; i++) {
267 FD_SET(i, hdr_encode_map);
268 FD_SET(i, url_encode_map);
269 }
270 for (i = 127; i < 256; i++) {
271 FD_SET(i, hdr_encode_map);
272 FD_SET(i, url_encode_map);
273 }
274
275 tmp = "\"#{|}";
276 while (*tmp) {
277 FD_SET(*tmp, hdr_encode_map);
278 tmp++;
279 }
280
281 tmp = "\"#";
282 while (*tmp) {
283 FD_SET(*tmp, url_encode_map);
284 tmp++;
285 }
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]286
287 /* memory allocations */
288 pool2_requri = create_pool("requri", REQURI_LEN, MEM_F_SHARED);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]289 pool2_uniqueid = create_pool("uniqueid", UNIQUEID_LEN, MEM_F_SHARED);
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]290}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]291
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]292/*
293 * We have 26 list of methods (1 per first letter), each of which can have
294 * up to 3 entries (2 valid, 1 null).
295 */
296struct http_method_desc {
297 http_meth_t meth;
298 int len;
299 const char text[8];
300};
301
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]302const struct http_method_desc http_methods[26][3] = {
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]303 ['C' - 'A'] = {
304 [0] = { .meth = HTTP_METH_CONNECT , .len=7, .text="CONNECT" },
305 },
306 ['D' - 'A'] = {
307 [0] = { .meth = HTTP_METH_DELETE , .len=6, .text="DELETE" },
308 },
309 ['G' - 'A'] = {
310 [0] = { .meth = HTTP_METH_GET , .len=3, .text="GET" },
311 },
312 ['H' - 'A'] = {
313 [0] = { .meth = HTTP_METH_HEAD , .len=4, .text="HEAD" },
314 },
315 ['P' - 'A'] = {
316 [0] = { .meth = HTTP_METH_POST , .len=4, .text="POST" },
317 [1] = { .meth = HTTP_METH_PUT , .len=3, .text="PUT" },
318 },
319 ['T' - 'A'] = {
320 [0] = { .meth = HTTP_METH_TRACE , .len=5, .text="TRACE" },
321 },
322 /* rest is empty like this :
323 * [1] = { .meth = HTTP_METH_NONE , .len=0, .text="" },
324 */
325};
326
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]327/* It is about twice as fast on recent architectures to lookup a byte in a
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]328 * table than to perform a boolean AND or OR between two tests. Refer to
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]329 * RFC2616 for those chars.
330 */
331
332const char http_is_spht[256] = {
333 [' '] = 1, ['\t'] = 1,
334};
335
336const char http_is_crlf[256] = {
337 ['\r'] = 1, ['\n'] = 1,
338};
339
340const char http_is_lws[256] = {
341 [' '] = 1, ['\t'] = 1,
342 ['\r'] = 1, ['\n'] = 1,
343};
344
345const char http_is_sep[256] = {
346 ['('] = 1, [')'] = 1, ['<'] = 1, ['>'] = 1,
347 ['@'] = 1, [','] = 1, [';'] = 1, [':'] = 1,
348 ['"'] = 1, ['/'] = 1, ['['] = 1, [']'] = 1,
349 ['{'] = 1, ['}'] = 1, ['?'] = 1, ['='] = 1,
350 [' '] = 1, ['\t'] = 1, ['\\'] = 1,
351};
352
353const char http_is_ctl[256] = {
354 [0 ... 31] = 1,
355 [127] = 1,
356};
357
358/*
359 * A token is any ASCII char that is neither a separator nor a CTL char.
360 * Do not overwrite values in assignment since gcc-2.95 will not handle
361 * them correctly. Instead, define every non-CTL char's status.
362 */
363const char http_is_token[256] = {
364 [' '] = 0, ['!'] = 1, ['"'] = 0, ['#'] = 1,
365 ['$'] = 1, ['%'] = 1, ['&'] = 1, ['\''] = 1,
366 ['('] = 0, [')'] = 0, ['*'] = 1, ['+'] = 1,
367 [','] = 0, ['-'] = 1, ['.'] = 1, ['/'] = 0,
368 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1,
369 ['4'] = 1, ['5'] = 1, ['6'] = 1, ['7'] = 1,
370 ['8'] = 1, ['9'] = 1, [':'] = 0, [';'] = 0,
371 ['<'] = 0, ['='] = 0, ['>'] = 0, ['?'] = 0,
372 ['@'] = 0, ['A'] = 1, ['B'] = 1, ['C'] = 1,
373 ['D'] = 1, ['E'] = 1, ['F'] = 1, ['G'] = 1,
374 ['H'] = 1, ['I'] = 1, ['J'] = 1, ['K'] = 1,
375 ['L'] = 1, ['M'] = 1, ['N'] = 1, ['O'] = 1,
376 ['P'] = 1, ['Q'] = 1, ['R'] = 1, ['S'] = 1,
377 ['T'] = 1, ['U'] = 1, ['V'] = 1, ['W'] = 1,
378 ['X'] = 1, ['Y'] = 1, ['Z'] = 1, ['['] = 0,
379 ['\\'] = 0, [']'] = 0, ['^'] = 1, ['_'] = 1,
380 ['`'] = 1, ['a'] = 1, ['b'] = 1, ['c'] = 1,
381 ['d'] = 1, ['e'] = 1, ['f'] = 1, ['g'] = 1,
382 ['h'] = 1, ['i'] = 1, ['j'] = 1, ['k'] = 1,
383 ['l'] = 1, ['m'] = 1, ['n'] = 1, ['o'] = 1,
384 ['p'] = 1, ['q'] = 1, ['r'] = 1, ['s'] = 1,
385 ['t'] = 1, ['u'] = 1, ['v'] = 1, ['w'] = 1,
386 ['x'] = 1, ['y'] = 1, ['z'] = 1, ['{'] = 0,
387 ['|'] = 1, ['}'] = 0, ['~'] = 1,
388};
389
390
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]391/*
392 * An http ver_token is any ASCII which can be found in an HTTP version,
393 * which includes 'H', 'T', 'P', '/', '.' and any digit.
394 */
395const char http_is_ver_token[256] = {
396 ['.'] = 1, ['/'] = 1,
397 ['0'] = 1, ['1'] = 1, ['2'] = 1, ['3'] = 1, ['4'] = 1,
398 ['5'] = 1, ['6'] = 1, ['7'] = 1, ['8'] = 1, ['9'] = 1,
399 ['H'] = 1, ['P'] = 1, ['T'] = 1,
400};
401
402
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]403/*
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]404 * Silent debug that outputs only in strace, using fd #-1. Trash is modified.
405 */
406#if defined(DEBUG_FSM)
407static void http_silent_debug(int line, struct session *s)
408{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]409 chunk_printf(&trash,
410 "[%04d] req: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld tf=%08x\n",
411 line,
412 s->si[0].state, s->si[0].fd, s->txn.req.msg_state, s->req->flags, s->req->analysers,
413 s->req->buf->data, s->req->buf->size, s->req->l, s->req->w, s->req->r, s->req->buf->p, s->req->buf->o, s->req->to_forward, s->txn.flags);
414 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]415
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]416 chunk_printf(&trash,
417 " %04d rep: p=%d(%d) s=%d bf=%08x an=%08x data=%p size=%d l=%d w=%p r=%p o=%p sm=%d fw=%ld\n",
418 line,
419 s->si[1].state, s->si[1].fd, s->txn.rsp.msg_state, s->rep->flags, s->rep->analysers,
420 s->rep->buf->data, s->rep->buf->size, s->rep->l, s->rep->w, s->rep->r, s->rep->buf->p, s->rep->buf->o, s->rep->to_forward);
421 write(-1, trash.str, trash.len);
Willy Tarreaue988a792010-01-04 21:13:14 +0100[diff] [blame]422}
423#else
424#define http_silent_debug(l,s) do { } while (0)
425#endif
426
427/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]428 * Adds a header and its CRLF at the tail of the message's buffer, just before
429 * the last CRLF. Text length is measured first, so it cannot be NULL.
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]430 * The header is also automatically added to the index <hdr_idx>, and the end
431 * of headers is automatically adjusted. The number of bytes added is returned
432 * on success, otherwise <0 is returned indicating an error.
433 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]434int http_header_add_tail(struct http_msg *msg, struct hdr_idx *hdr_idx, const char *text)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]435{
436 int bytes, len;
437
438 len = strlen(text);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]439 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]440 if (!bytes)
441 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]442 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]443 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
444}
445
446/*
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]447 * Adds a header and its CRLF at the tail of the message's buffer, just before
448 * the last CRLF. <len> bytes are copied, not counting the CRLF. If <text> is NULL, then
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]449 * the buffer is only opened and the space reserved, but nothing is copied.
450 * The header is also automatically added to the index <hdr_idx>, and the end
451 * of headers is automatically adjusted. The number of bytes added is returned
452 * on success, otherwise <0 is returned indicating an error.
453 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]454int http_header_add_tail2(struct http_msg *msg,
455 struct hdr_idx *hdr_idx, const char *text, int len)
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]456{
457 int bytes;
458
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]459 bytes = buffer_insert_line2(msg->chn->buf, msg->chn->buf->p + msg->eoh, text, len);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]460 if (!bytes)
461 return -1;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]462 http_msg_move_end(msg, bytes);
Willy Tarreau4af6f3a2007-03-18 22:36:26 +0100[diff] [blame]463 return hdr_idx_add(len, 1, hdr_idx, hdr_idx->tail);
464}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]465
466/*
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]467 * Checks if <hdr> is exactly <name> for <len> chars, and ends with a colon.
468 * If so, returns the position of the first non-space character relative to
469 * <hdr>, or <end>-<hdr> if not found before. If no value is found, it tries
470 * to return a pointer to the place after the first space. Returns 0 if the
471 * header name does not match. Checks are case-insensitive.
472 */
473int http_header_match2(const char *hdr, const char *end,
474 const char *name, int len)
475{
476 const char *val;
477
478 if (hdr + len >= end)
479 return 0;
480 if (hdr[len] != ':')
481 return 0;
482 if (strncasecmp(hdr, name, len) != 0)
483 return 0;
484 val = hdr + len + 1;
485 while (val < end && HTTP_IS_SPHT(*val))
486 val++;
487 if ((val >= end) && (len + 2 <= end - hdr))
488 return len + 2; /* we may replace starting from second space */
489 return val - hdr;
490}
491
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]492/* Find the first or next occurrence of header <name> in message buffer <sol>
493 * using headers index <idx>, and return it in the <ctx> structure. This
494 * structure holds everything necessary to use the header and find next
495 * occurrence. If its <idx> member is 0, the header is searched from the
496 * beginning. Otherwise, the next occurrence is returned. The function returns
497 * 1 when it finds a value, and 0 when there is no more. It is very similar to
498 * http_find_header2() except that it is designed to work with full-line headers
499 * whose comma is not a delimiter but is part of the syntax. As a special case,
500 * if ctx->val is NULL when searching for a new values of a header, the current
501 * header is rescanned. This allows rescanning after a header deletion.
502 */
503int http_find_full_header2(const char *name, int len,
504 char *sol, struct hdr_idx *idx,
505 struct hdr_ctx *ctx)
506{
507 char *eol, *sov;
508 int cur_idx, old_idx;
509
510 cur_idx = ctx->idx;
511 if (cur_idx) {
512 /* We have previously returned a header, let's search another one */
513 sol = ctx->line;
514 eol = sol + idx->v[cur_idx].len;
515 goto next_hdr;
516 }
517
518 /* first request for this header */
519 sol += hdr_idx_first_pos(idx);
520 old_idx = 0;
521 cur_idx = hdr_idx_first_idx(idx);
522 while (cur_idx) {
523 eol = sol + idx->v[cur_idx].len;
524
525 if (len == 0) {
526 /* No argument was passed, we want any header.
527 * To achieve this, we simply build a fake request. */
528 while (sol + len < eol && sol[len] != ':')
529 len++;
530 name = sol;
531 }
532
533 if ((len < eol - sol) &&
534 (sol[len] == ':') &&
535 (strncasecmp(sol, name, len) == 0)) {
536 ctx->del = len;
537 sov = sol + len + 1;
538 while (sov < eol && http_is_lws[(unsigned char)*sov])
539 sov++;
540
541 ctx->line = sol;
542 ctx->prev = old_idx;
543 ctx->idx = cur_idx;
544 ctx->val = sov - sol;
545 ctx->tws = 0;
546 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
547 eol--;
548 ctx->tws++;
549 }
550 ctx->vlen = eol - sov;
551 return 1;
552 }
553 next_hdr:
554 sol = eol + idx->v[cur_idx].cr + 1;
555 old_idx = cur_idx;
556 cur_idx = idx->v[cur_idx].next;
557 }
558 return 0;
559}
560
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]561/* Find the end of the header value contained between <s> and <e>. See RFC2616,
562 * par 2.2 for more information. Note that it requires a valid header to return
563 * a valid result. This works for headers defined as comma-separated lists.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]564 */
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]565char *find_hdr_value_end(char *s, const char *e)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]566{
567 int quoted, qdpair;
568
569 quoted = qdpair = 0;
570 for (; s < e; s++) {
571 if (qdpair) qdpair = 0;
Willy Tarreau0f7f51f2010-08-30 11:06:34 +0200[diff] [blame]572 else if (quoted) {
573 if (*s == '\\') qdpair = 1;
574 else if (*s == '"') quoted = 0;
575 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]576 else if (*s == '"') quoted = 1;
577 else if (*s == ',') return s;
578 }
579 return s;
580}
581
582/* Find the first or next occurrence of header <name> in message buffer <sol>
583 * using headers index <idx>, and return it in the <ctx> structure. This
584 * structure holds everything necessary to use the header and find next
585 * occurrence. If its <idx> member is 0, the header is searched from the
586 * beginning. Otherwise, the next occurrence is returned. The function returns
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]587 * 1 when it finds a value, and 0 when there is no more. It is designed to work
588 * with headers defined as comma-separated lists. As a special case, if ctx->val
589 * is NULL when searching for a new values of a header, the current header is
590 * rescanned. This allows rescanning after a header deletion.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]591 */
592int http_find_header2(const char *name, int len,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]593 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]594 struct hdr_ctx *ctx)
595{
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]596 char *eol, *sov;
597 int cur_idx, old_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]598
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]599 cur_idx = ctx->idx;
600 if (cur_idx) {
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]601 /* We have previously returned a value, let's search
602 * another one on the same line.
603 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]604 sol = ctx->line;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]605 ctx->del = ctx->val + ctx->vlen + ctx->tws;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]606 sov = sol + ctx->del;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]607 eol = sol + idx->v[cur_idx].len;
608
609 if (sov >= eol)
610 /* no more values in this header */
611 goto next_hdr;
612
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]613 /* values remaining for this header, skip the comma but save it
614 * for later use (eg: for header deletion).
615 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]616 sov++;
617 while (sov < eol && http_is_lws[(unsigned char)*sov])
618 sov++;
619
620 goto return_hdr;
621 }
622
623 /* first request for this header */
624 sol += hdr_idx_first_pos(idx);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]625 old_idx = 0;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]626 cur_idx = hdr_idx_first_idx(idx);
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]627 while (cur_idx) {
628 eol = sol + idx->v[cur_idx].len;
629
Willy Tarreau1ad7c6d2007-06-10 21:42:55 +0200[diff] [blame]630 if (len == 0) {
631 /* No argument was passed, we want any header.
632 * To achieve this, we simply build a fake request. */
633 while (sol + len < eol && sol[len] != ':')
634 len++;
635 name = sol;
636 }
637
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]638 if ((len < eol - sol) &&
639 (sol[len] == ':') &&
640 (strncasecmp(sol, name, len) == 0)) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]641 ctx->del = len;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]642 sov = sol + len + 1;
643 while (sov < eol && http_is_lws[(unsigned char)*sov])
644 sov++;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]645
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]646 ctx->line = sol;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]647 ctx->prev = old_idx;
648 return_hdr:
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]649 ctx->idx = cur_idx;
650 ctx->val = sov - sol;
651
652 eol = find_hdr_value_end(sov, eol);
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]653 ctx->tws = 0;
Willy Tarreau275600b2011-09-16 08:11:26 +0200[diff] [blame]654 while (eol > sov && http_is_lws[(unsigned char)*(eol - 1)]) {
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]655 eol--;
656 ctx->tws++;
657 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]658 ctx->vlen = eol - sov;
659 return 1;
660 }
661 next_hdr:
662 sol = eol + idx->v[cur_idx].cr + 1;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]663 old_idx = cur_idx;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]664 cur_idx = idx->v[cur_idx].next;
665 }
666 return 0;
667}
668
669int http_find_header(const char *name,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]670 char *sol, struct hdr_idx *idx,
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]671 struct hdr_ctx *ctx)
672{
673 return http_find_header2(name, strlen(name), sol, idx, ctx);
674}
675
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]676/* Remove one value of a header. This only works on a <ctx> returned by one of
677 * the http_find_header functions. The value is removed, as well as surrounding
678 * commas if any. If the removed value was alone, the whole header is removed.
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]679 * The ctx is always updated accordingly, as well as the buffer and HTTP
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]680 * message <msg>. The new index is returned. If it is zero, it means there is
681 * no more header, so any processing may stop. The ctx is always left in a form
682 * that can be handled by http_find_header2() to find next occurrence.
683 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]684int http_remove_header2(struct http_msg *msg, struct hdr_idx *idx, struct hdr_ctx *ctx)
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]685{
686 int cur_idx = ctx->idx;
687 char *sol = ctx->line;
688 struct hdr_idx_elem *hdr;
689 int delta, skip_comma;
690
691 if (!cur_idx)
692 return 0;
693
694 hdr = &idx->v[cur_idx];
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]695 if (sol[ctx->del] == ':' && ctx->val + ctx->vlen + ctx->tws == hdr->len) {
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]696 /* This was the only value of the header, we must now remove it entirely. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]697 delta = buffer_replace2(msg->chn->buf, sol, sol + hdr->len + hdr->cr + 1, NULL, 0);
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]698 http_msg_move_end(msg, delta);
699 idx->used--;
700 hdr->len = 0; /* unused entry */
701 idx->v[ctx->prev].next = idx->v[ctx->idx].next;
Willy Tarreau5c4784f2011-02-12 13:07:35 +0100[diff] [blame]702 if (idx->tail == ctx->idx)
703 idx->tail = ctx->prev;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]704 ctx->idx = ctx->prev; /* walk back to the end of previous header */
705 ctx->line -= idx->v[ctx->idx].len + idx->v[cur_idx].cr + 1;
706 ctx->val = idx->v[ctx->idx].len; /* point to end of previous header */
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]707 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]708 return ctx->idx;
709 }
710
711 /* This was not the only value of this header. We have to remove between
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]712 * ctx->del+1 and ctx->val+ctx->vlen+ctx->tws+1 included. If it is the
713 * last entry of the list, we remove the last separator.
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]714 */
715
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]716 skip_comma = (ctx->val + ctx->vlen + ctx->tws == hdr->len) ? 0 : 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]717 delta = buffer_replace2(msg->chn->buf, sol + ctx->del + skip_comma,
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]718 sol + ctx->val + ctx->vlen + ctx->tws + skip_comma,
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]719 NULL, 0);
720 hdr->len += delta;
721 http_msg_move_end(msg, delta);
722 ctx->val = ctx->del;
Willy Tarreau588bd4f2011-09-01 22:22:28 +0200[diff] [blame]723 ctx->tws = ctx->vlen = 0;
Willy Tarreau68085d82010-01-18 14:54:04 +0100[diff] [blame]724 return ctx->idx;
725}
726
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]727/* This function handles a server error at the stream interface level. The
728 * stream interface is assumed to be already in a closed state. An optional
729 * message is copied into the input buffer, and an HTTP status code stored.
730 * The error flags are set to the values in arguments. Any pending request
Willy Tarreau6f0aa472009-03-08 20:33:29 +0100[diff] [blame]731 * in this buffer will be lost.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]732 */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]733static void http_server_error(struct session *t, struct stream_interface *si,
734 int err, int finst, int status, const struct chunk *msg)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]735{
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]736 channel_auto_read(si->ob);
737 channel_abort(si->ob);
738 channel_auto_close(si->ob);
739 channel_erase(si->ob);
740 channel_auto_close(si->ib);
741 channel_auto_read(si->ib);
Willy Tarreau0f772532006-12-23 20:51:41 +0100[diff] [blame]742 if (status > 0 && msg) {
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]743 t->txn.status = status;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]744 bo_inject(si->ib, msg->str, msg->len);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]745 }
746 if (!(t->flags & SN_ERR_MASK))
747 t->flags |= err;
748 if (!(t->flags & SN_FINST_MASK))
749 t->flags |= finst;
750}
751
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]752/* This function returns the appropriate error location for the given session
753 * and message.
754 */
755
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]756struct chunk *http_error_message(struct session *s, int msgnum)
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]757{
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]758 if (s->be->errmsg[msgnum].str)
759 return &s->be->errmsg[msgnum];
Willy Tarreau80587432006-12-24 17:47:20 +0100[diff] [blame]760 else if (s->fe->errmsg[msgnum].str)
761 return &s->fe->errmsg[msgnum];
762 else
763 return &http_err_chunks[msgnum];
764}
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]765
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]766/*
767 * returns HTTP_METH_NONE if there is nothing valid to read (empty or non-text
768 * string), HTTP_METH_OTHER for unknown methods, or the identified method.
769 */
770static http_meth_t find_http_meth(const char *str, const int len)
771{
772 unsigned char m;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]773 const struct http_method_desc *h;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]774
775 m = ((unsigned)*str - 'A');
776
777 if (m < 26) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]778 for (h = http_methods[m]; h->len > 0; h++) {
779 if (unlikely(h->len != len))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]780 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]781 if (likely(memcmp(str, h->text, h->len) == 0))
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]782 return h->meth;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]783 };
784 return HTTP_METH_OTHER;
785 }
786 return HTTP_METH_NONE;
787
788}
789
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]790/* Parse the URI from the given transaction (which is assumed to be in request
791 * phase) and look for the "/" beginning the PATH. If not found, return NULL.
792 * It is returned otherwise.
793 */
794static char *
795http_get_path(struct http_txn *txn)
796{
797 char *ptr, *end;
798
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]799 ptr = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]800 end = ptr + txn->req.sl.rq.u_l;
801
802 if (ptr >= end)
803 return NULL;
804
805 /* RFC2616, par. 5.1.2 :
806 * Request-URI = "*" | absuri | abspath | authority
807 */
808
809 if (*ptr == '*')
810 return NULL;
811
812 if (isalpha((unsigned char)*ptr)) {
813 /* this is a scheme as described by RFC3986, par. 3.1 */
814 ptr++;
815 while (ptr < end &&
816 (isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
817 ptr++;
818 /* skip '://' */
819 if (ptr == end || *ptr++ != ':')
820 return NULL;
821 if (ptr == end || *ptr++ != '/')
822 return NULL;
823 if (ptr == end || *ptr++ != '/')
824 return NULL;
825 }
826 /* skip [user[:passwd]@]host[:[port]] */
827
828 while (ptr < end && *ptr != '/')
829 ptr++;
830
831 if (ptr == end)
832 return NULL;
833
834 /* OK, we got the '/' ! */
835 return ptr;
836}
837
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]838/* Returns a 302 for a redirectable request that reaches a server working in
839 * in redirect mode. This may only be called just after the stream interface
840 * has moved to SI_ST_ASS. Unprocessable requests are left unchanged and will
841 * follow normal proxy processing. NOTE: this function is designed to support
842 * being called once data are scheduled for forwarding.
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]843 */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]844void http_perform_server_redirect(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]845{
846 struct http_txn *txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]847 struct server *srv;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]848 char *path;
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]849 int len, rewind;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]850
851 /* 1: create the response header */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]852 trash.len = strlen(HTTP_302);
853 memcpy(trash.str, HTTP_302, trash.len);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]854
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]855 srv = objt_server(s->target);
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]856
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]857 /* 2: add the server's prefix */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]858 if (trash.len + srv->rdr_len > trash.size)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]859 return;
860
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]861 /* special prefix "/" means don't change URL */
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]862 if (srv->rdr_len != 1 || *srv->rdr_pfx != '/') {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]863 memcpy(trash.str + trash.len, srv->rdr_pfx, srv->rdr_len);
864 trash.len += srv->rdr_len;
Willy Tarreaudcb75c42010-01-10 00:24:22 +0100[diff] [blame]865 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]866
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]867 /* 3: add the request URI. Since it was already forwarded, we need
868 * to temporarily rewind the buffer.
869 */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]870 txn = &s->txn;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]871 b_rew(s->req->buf, rewind = s->req->buf->o);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]872
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]873 path = http_get_path(txn);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]874 len = buffer_count(s->req->buf, path, b_ptr(s->req->buf, txn->req.sl.rq.u + txn->req.sl.rq.u_l));
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]875
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]876 b_adv(s->req->buf, rewind);
Willy Tarreaucde18fc2012-05-30 07:59:54 +0200[diff] [blame]877
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]878 if (!path)
879 return;
880
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]881 if (trash.len + len > trash.size - 4) /* 4 for CRLF-CRLF */
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]882 return;
883
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]884 memcpy(trash.str + trash.len, path, len);
885 trash.len += len;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]886
887 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]888 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
889 trash.len += 29;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]890 } else {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]891 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
892 trash.len += 23;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]893 }
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]894
895 /* prepare to return without error. */
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]896 si_shutr(si);
897 si_shutw(si);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]898 si->err_type = SI_ET_NONE;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]899 si->state = SI_ST_CLO;
900
901 /* send the message */
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]902 http_server_error(s, si, SN_ERR_LOCAL, SN_FINST_C, 302, &trash);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]903
904 /* FIXME: we should increase a counter of redirects per server and per backend. */
Willy Tarreau4521ba62013-01-24 01:25:25 +0100[diff] [blame]905 srv_inc_sess_ctr(srv);
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]906}
907
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]908/* Return the error message corresponding to si->err_type. It is assumed
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]909 * that the server side is closed. Note that err_type is actually a
910 * bitmask, where almost only aborts may be cumulated with other
911 * values. We consider that aborted operations are more important
912 * than timeouts or errors due to the fact that nobody else in the
913 * logs might explain incomplete retries. All others should avoid
914 * being cumulated. It should normally not be possible to have multiple
915 * aborts at once, but just in case, the first one in sequence is reported.
916 */
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]917void http_return_srv_error(struct session *s, struct stream_interface *si)
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]918{
Willy Tarreau0cac36f2008-11-30 20:44:17 +0100[diff] [blame]919 int err_type = si->err_type;
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]920
921 if (err_type & SI_ET_QUEUE_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]922 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]923 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]924 else if (err_type & SI_ET_CONN_ABRT)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]925 http_server_error(s, si, SN_ERR_CLICL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]926 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]927 else if (err_type & SI_ET_QUEUE_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]928 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]929 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]930 else if (err_type & SI_ET_QUEUE_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]931 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_Q,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]932 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]933 else if (err_type & SI_ET_CONN_TO)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]934 http_server_error(s, si, SN_ERR_SRVTO, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]935 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]936 else if (err_type & SI_ET_CONN_ERR)
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]937 http_server_error(s, si, SN_ERR_SRVCL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]938 503, http_error_message(s, HTTP_ERR_503));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]939 else /* SI_ET_CONN_OTHER and others */
Willy Tarreau2d3d94c2008-11-30 20:20:08 +0100[diff] [blame]940 http_server_error(s, si, SN_ERR_INTERNAL, SN_FINST_C,
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]941 500, http_error_message(s, HTTP_ERR_500));
Willy Tarreauefb453c2008-10-26 20:49:47 +0100[diff] [blame]942}
943
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]944extern const char sess_term_cond[8];
945extern const char sess_fin_state[8];
946extern const char *monthname[12];
Willy Tarreau332f8bf2007-05-13 21:36:56 +0200[diff] [blame]947struct pool_head *pool2_requri;
Willy Tarreau193b8c62012-11-22 00:17:38 +0100[diff] [blame]948struct pool_head *pool2_capture = NULL;
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]949struct pool_head *pool2_uniqueid;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]950
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]951/*
952 * Capture headers from message starting at <som> according to header list
953 * <cap_hdr>, and fill the <idx> structure appropriately.
954 */
955void capture_headers(char *som, struct hdr_idx *idx,
956 char **cap, struct cap_hdr *cap_hdr)
957{
958 char *eol, *sol, *col, *sov;
959 int cur_idx;
960 struct cap_hdr *h;
961 int len;
962
963 sol = som + hdr_idx_first_pos(idx);
964 cur_idx = hdr_idx_first_idx(idx);
965
966 while (cur_idx) {
967 eol = sol + idx->v[cur_idx].len;
968
969 col = sol;
970 while (col < eol && *col != ':')
971 col++;
972
973 sov = col + 1;
974 while (sov < eol && http_is_lws[(unsigned char)*sov])
975 sov++;
976
977 for (h = cap_hdr; h; h = h->next) {
978 if ((h->namelen == col - sol) &&
979 (strncasecmp(sol, h->name, h->namelen) == 0)) {
980 if (cap[h->index] == NULL)
981 cap[h->index] =
Willy Tarreaucf7f3202007-05-13 22:46:04 +0200[diff] [blame]982 pool_alloc2(h->pool);
Willy Tarreau117f59e2007-03-04 18:17:17 +0100[diff] [blame]983
984 if (cap[h->index] == NULL) {
985 Alert("HTTP capture : out of memory.\n");
986 continue;
987 }
988
989 len = eol - sov;
990 if (len > h->len)
991 len = h->len;
992
993 memcpy(cap[h->index], sov, len);
994 cap[h->index][len]=0;
995 }
996 }
997 sol = eol + idx->v[cur_idx].cr + 1;
998 cur_idx = idx->v[cur_idx].next;
999 }
1000}
1001
1002
Willy Tarreau42250582007-04-01 01:30:43 +0200[diff] [blame]1003/* either we find an LF at <ptr> or we jump to <bad>.
1004 */
1005#define EXPECT_LF_HERE(ptr, bad) do { if (unlikely(*(ptr) != '\n')) goto bad; } while (0)
1006
1007/* plays with variables <ptr>, <end> and <state>. Jumps to <good> if OK,
1008 * otherwise to <http_msg_ood> with <state> set to <st>.
1009 */
1010#define EAT_AND_JUMP_OR_RETURN(good, st) do { \
1011 ptr++; \
1012 if (likely(ptr < end)) \
1013 goto good; \
1014 else { \
1015 state = (st); \
1016 goto http_msg_ood; \
1017 } \
1018 } while (0)
1019
1020
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1021/*
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]1022 * This function parses a status line between <ptr> and <end>, starting with
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1023 * parser state <state>. Only states HTTP_MSG_RPVER, HTTP_MSG_RPVER_SP,
1024 * HTTP_MSG_RPCODE, HTTP_MSG_RPCODE_SP and HTTP_MSG_RPREASON are handled. Others
1025 * will give undefined results.
1026 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1027 * and that msg->sol points to the beginning of the response.
1028 * If a complete line is found (which implies that at least one CR or LF is
1029 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1030 * returned indicating an incomplete line (which does not mean that parts have
1031 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1032 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1033 * upon next call.
1034 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1035 * This function was intentionally designed to be called from
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1036 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1037 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1038 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1039 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1040const char *http_parse_stsline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1041 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1042 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1043{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1044 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1045
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1046 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1047 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1048 http_msg_rpver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1049 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1050 EAT_AND_JUMP_OR_RETURN(http_msg_rpver, HTTP_MSG_RPVER);
1051
1052 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1053 msg->sl.st.v_l = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1054 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1055 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1056 state = HTTP_MSG_ERROR;
1057 break;
1058
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1059 case HTTP_MSG_RPVER_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1060 http_msg_rpver_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1061 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1062 msg->sl.st.c = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1063 goto http_msg_rpcode;
1064 }
1065 if (likely(HTTP_IS_SPHT(*ptr)))
1066 EAT_AND_JUMP_OR_RETURN(http_msg_rpver_sp, HTTP_MSG_RPVER_SP);
1067 /* so it's a CR/LF, this is invalid */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1068 state = HTTP_MSG_ERROR;
1069 break;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1070
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1071 case HTTP_MSG_RPCODE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1072 http_msg_rpcode:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1073 if (likely(!HTTP_IS_LWS(*ptr)))
1074 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode, HTTP_MSG_RPCODE);
1075
1076 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1077 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1078 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1079 }
1080
1081 /* so it's a CR/LF, so there is no reason phrase */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1082 msg->sl.st.c_l = ptr - msg_start - msg->sl.st.c;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1083 http_msg_rsp_reason:
1084 /* FIXME: should we support HTTP responses without any reason phrase ? */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1085 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1086 msg->sl.st.r_l = 0;
1087 goto http_msg_rpline_eol;
1088
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1089 case HTTP_MSG_RPCODE_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1090 http_msg_rpcode_sp:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1091 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1092 msg->sl.st.r = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1093 goto http_msg_rpreason;
1094 }
1095 if (likely(HTTP_IS_SPHT(*ptr)))
1096 EAT_AND_JUMP_OR_RETURN(http_msg_rpcode_sp, HTTP_MSG_RPCODE_SP);
1097 /* so it's a CR/LF, so there is no reason phrase */
1098 goto http_msg_rsp_reason;
1099
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1100 case HTTP_MSG_RPREASON:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1101 http_msg_rpreason:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1102 if (likely(!HTTP_IS_CRLF(*ptr)))
1103 EAT_AND_JUMP_OR_RETURN(http_msg_rpreason, HTTP_MSG_RPREASON);
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1104 msg->sl.st.r_l = ptr - msg_start - msg->sl.st.r;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1105 http_msg_rpline_eol:
1106 /* We have seen the end of line. Note that we do not
1107 * necessarily have the \n yet, but at least we know that we
1108 * have EITHER \r OR \n, otherwise the response would not be
1109 * complete. We can then record the response length and return
1110 * to the caller which will be able to register it.
1111 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1112 msg->sl.st.l = ptr - msg_start - msg->sol;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1113 return ptr;
1114
1115#ifdef DEBUG_FULL
1116 default:
1117 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1118 exit(1);
1119#endif
1120 }
1121
1122 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1123 /* out of valid data */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1124 if (ret_state)
1125 *ret_state = state;
1126 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1127 *ret_ptr = ptr - msg_start;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1128 return NULL;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1129}
1130
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1131/*
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1132 * This function parses a request line between <ptr> and <end>, starting with
1133 * parser state <state>. Only states HTTP_MSG_RQMETH, HTTP_MSG_RQMETH_SP,
1134 * HTTP_MSG_RQURI, HTTP_MSG_RQURI_SP and HTTP_MSG_RQVER are handled. Others
1135 * will give undefined results.
1136 * Note that it is upon the caller's responsibility to ensure that ptr < end,
1137 * and that msg->sol points to the beginning of the request.
1138 * If a complete line is found (which implies that at least one CR or LF is
1139 * found before <end>, the updated <ptr> is returned, otherwise NULL is
1140 * returned indicating an incomplete line (which does not mean that parts have
1141 * not been updated). In the incomplete case, if <ret_ptr> or <ret_state> are
1142 * non-NULL, they are fed with the new <ptr> and <state> values to be passed
1143 * upon next call.
1144 *
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1145 * This function was intentionally designed to be called from
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1146 * http_msg_analyzer() with the lowest overhead. It should integrate perfectly
1147 * within its state machine and use the same macros, hence the need for same
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1148 * labels and variable names. Note that msg->sol is left unchanged.
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1149 */
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1150const char *http_parse_reqline(struct http_msg *msg,
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1151 unsigned int state, const char *ptr, const char *end,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1152 unsigned int *ret_ptr, unsigned int *ret_state)
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]1153{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1154 const char *msg_start = msg->chn->buf->p;
Willy Tarreau62f791e2012-03-09 11:32:30 +0100[diff] [blame]1155
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1156 switch (state) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1157 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1158 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1159 if (likely(HTTP_IS_TOKEN(*ptr)))
1160 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth, HTTP_MSG_RQMETH);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1161
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1162 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1163 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1164 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1165 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1166
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1167 if (likely(HTTP_IS_CRLF(*ptr))) {
1168 /* HTTP 0.9 request */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1169 msg->sl.rq.m_l = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1170 http_msg_req09_uri:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1171 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1172 http_msg_req09_uri_e:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1173 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1174 http_msg_req09_ver:
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1175 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1176 msg->sl.rq.v_l = 0;
1177 goto http_msg_rqline_eol;
1178 }
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1179 state = HTTP_MSG_ERROR;
1180 break;
1181
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1182 case HTTP_MSG_RQMETH_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1183 http_msg_rqmeth_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1184 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1185 msg->sl.rq.u = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1186 goto http_msg_rquri;
1187 }
1188 if (likely(HTTP_IS_SPHT(*ptr)))
1189 EAT_AND_JUMP_OR_RETURN(http_msg_rqmeth_sp, HTTP_MSG_RQMETH_SP);
1190 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1191 goto http_msg_req09_uri;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1192
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1193 case HTTP_MSG_RQURI:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1194 http_msg_rquri:
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1195 if (likely((unsigned char)(*ptr - 33) <= 93)) /* 33 to 126 included */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1196 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1197
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1198 if (likely(HTTP_IS_SPHT(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1199 msg->sl.rq.u_l = ptr - msg_start - msg->sl.rq.u;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1200 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1201 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1202
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1203 if (likely((unsigned char)*ptr >= 128)) {
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1204 /* non-ASCII chars are forbidden unless option
1205 * accept-invalid-http-request is enabled in the frontend.
1206 * In any case, we capture the faulty char.
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1207 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1208 if (msg->err_pos < -1)
1209 goto invalid_char;
1210 if (msg->err_pos == -1)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1211 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1212 EAT_AND_JUMP_OR_RETURN(http_msg_rquri, HTTP_MSG_RQURI);
1213 }
1214
1215 if (likely(HTTP_IS_CRLF(*ptr))) {
1216 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1217 goto http_msg_req09_uri_e;
1218 }
1219
1220 /* OK forbidden chars, 0..31 or 127 */
Willy Tarreau422246e2012-01-07 23:54:13 +0100[diff] [blame]1221 invalid_char:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1222 msg->err_pos = ptr - msg_start;
Willy Tarreau2e9506d2012-01-07 23:22:31 +0100[diff] [blame]1223 state = HTTP_MSG_ERROR;
1224 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1225
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1226 case HTTP_MSG_RQURI_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1227 http_msg_rquri_sp:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1228 if (likely(!HTTP_IS_LWS(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1229 msg->sl.rq.v = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1230 goto http_msg_rqver;
1231 }
1232 if (likely(HTTP_IS_SPHT(*ptr)))
1233 EAT_AND_JUMP_OR_RETURN(http_msg_rquri_sp, HTTP_MSG_RQURI_SP);
1234 /* so it's a CR/LF, meaning an HTTP 0.9 request */
1235 goto http_msg_req09_ver;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1236
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1237 case HTTP_MSG_RQVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1238 http_msg_rqver:
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1239 if (likely(HTTP_IS_VER_TOKEN(*ptr)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1240 EAT_AND_JUMP_OR_RETURN(http_msg_rqver, HTTP_MSG_RQVER);
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1241
1242 if (likely(HTTP_IS_CRLF(*ptr))) {
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]1243 msg->sl.rq.v_l = ptr - msg_start - msg->sl.rq.v;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1244 http_msg_rqline_eol:
1245 /* We have seen the end of line. Note that we do not
1246 * necessarily have the \n yet, but at least we know that we
1247 * have EITHER \r OR \n, otherwise the request would not be
1248 * complete. We can then record the request length and return
1249 * to the caller which will be able to register it.
1250 */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1251 msg->sl.rq.l = ptr - msg_start - msg->sol;
Willy Tarreau4b89ad42007-03-04 18:13:58 +0100[diff] [blame]1252 return ptr;
1253 }
1254
1255 /* neither an HTTP_VER token nor a CRLF */
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1256 state = HTTP_MSG_ERROR;
1257 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1258
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1259#ifdef DEBUG_FULL
1260 default:
1261 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1262 exit(1);
1263#endif
1264 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1265
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1266 http_msg_ood:
Willy Tarreau7552c032009-03-01 11:10:40 +0100[diff] [blame]1267 /* out of valid data */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1268 if (ret_state)
1269 *ret_state = state;
1270 if (ret_ptr)
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1271 *ret_ptr = ptr - msg_start;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1272 return NULL;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1273}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1274
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1275/*
1276 * Returns the data from Authorization header. Function may be called more
1277 * than once so data is stored in txn->auth_data. When no header is found
1278 * or auth method is unknown auth_method is set to HTTP_AUTH_WRONG to avoid
1279 * searching again for something we are unable to find anyway.
1280 */
1281
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1282char *get_http_auth_buff;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1283
1284int
1285get_http_auth(struct session *s)
1286{
1287
1288 struct http_txn *txn = &s->txn;
1289 struct chunk auth_method;
1290 struct hdr_ctx ctx;
1291 char *h, *p;
1292 int len;
1293
1294#ifdef DEBUG_AUTH
1295 printf("Auth for session %p: %d\n", s, txn->auth.method);
1296#endif
1297
1298 if (txn->auth.method == HTTP_AUTH_WRONG)
1299 return 0;
1300
1301 if (txn->auth.method)
1302 return 1;
1303
1304 txn->auth.method = HTTP_AUTH_WRONG;
1305
1306 ctx.idx = 0;
Willy Tarreau844a7e72010-01-31 21:46:18 +0100[diff] [blame]1307
1308 if (txn->flags & TX_USE_PX_CONN) {
1309 h = "Proxy-Authorization";
1310 len = strlen(h);
1311 } else {
1312 h = "Authorization";
1313 len = strlen(h);
1314 }
1315
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1316 if (!http_find_header2(h, len, s->req->buf->p, &txn->hdr_idx, &ctx))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1317 return 0;
1318
1319 h = ctx.line + ctx.val;
1320
1321 p = memchr(h, ' ', ctx.vlen);
1322 if (!p || p == h)
1323 return 0;
1324
1325 chunk_initlen(&auth_method, h, 0, p-h);
1326 chunk_initlen(&txn->auth.method_data, p+1, 0, ctx.vlen-(p-h)-1);
1327
1328 if (!strncasecmp("Basic", auth_method.str, auth_method.len)) {
1329
1330 len = base64dec(txn->auth.method_data.str, txn->auth.method_data.len,
Willy Tarreau7e2c6472012-10-29 20:44:36 +0100[diff] [blame]1331 get_http_auth_buff, global.tune.bufsize - 1);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]1332
1333 if (len < 0)
1334 return 0;
1335
1336
1337 get_http_auth_buff[len] = '\0';
1338
1339 p = strchr(get_http_auth_buff, ':');
1340
1341 if (!p)
1342 return 0;
1343
1344 txn->auth.user = get_http_auth_buff;
1345 *p = '\0';
1346 txn->auth.pass = p+1;
1347
1348 txn->auth.method = HTTP_AUTH_BASIC;
1349 return 1;
1350 }
1351
1352 return 0;
1353}
1354
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1355
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1356/*
1357 * This function parses an HTTP message, either a request or a response,
Willy Tarreau8b1323e2012-03-09 14:46:19 +0100[diff] [blame]1358 * depending on the initial msg->msg_state. The caller is responsible for
1359 * ensuring that the message does not wrap. The function can be preempted
1360 * everywhere when data are missing and recalled at the exact same location
1361 * with no information loss. The message may even be realigned between two
1362 * calls. The header index is re-initialized when switching from
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]1363 * MSG_R[PQ]BEFORE to MSG_RPVER|MSG_RQMETH. It modifies msg->sol among other
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1364 * fields. Note that msg->sol will be initialized after completing the first
1365 * state, so that none of the msg pointers has to be initialized prior to the
1366 * first call.
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1367 */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]1368void http_msg_analyzer(struct http_msg *msg, struct hdr_idx *idx)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1369{
Willy Tarreaue69eada2008-01-27 00:34:10 +0100[diff] [blame]1370 unsigned int state; /* updated only when leaving the FSM */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1371 register char *ptr, *end; /* request pointers, to avoid dereferences */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1372 struct buffer *buf;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1373
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1374 state = msg->msg_state;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1375 buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1376 ptr = buf->p + msg->next;
1377 end = buf->p + buf->i;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1378
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1379 if (unlikely(ptr >= end))
1380 goto http_msg_ood;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1381
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1382 switch (state) {
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1383 /*
1384 * First, states that are specific to the response only.
1385 * We check them first so that request and headers are
1386 * closer to each other (accessed more often).
1387 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1388 case HTTP_MSG_RPBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1389 http_msg_rpbefore:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1390 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1391 /* we have a start of message, but we have to check
1392 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1393 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1394 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1395 if (unlikely(ptr != buf->p)) {
1396 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1397 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1398 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1399 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1400 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1401 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1402 msg->sl.st.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1403 hdr_idx_init(idx);
1404 state = HTTP_MSG_RPVER;
1405 goto http_msg_rpver;
1406 }
1407
1408 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1409 goto http_msg_invalid;
1410
1411 if (unlikely(*ptr == '\n'))
1412 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1413 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore_cr, HTTP_MSG_RPBEFORE_CR);
1414 /* stop here */
1415
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1416 case HTTP_MSG_RPBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1417 http_msg_rpbefore_cr:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1418 EXPECT_LF_HERE(ptr, http_msg_invalid);
1419 EAT_AND_JUMP_OR_RETURN(http_msg_rpbefore, HTTP_MSG_RPBEFORE);
1420 /* stop here */
1421
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1422 case HTTP_MSG_RPVER:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1423 http_msg_rpver:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1424 case HTTP_MSG_RPVER_SP:
1425 case HTTP_MSG_RPCODE:
1426 case HTTP_MSG_RPCODE_SP:
1427 case HTTP_MSG_RPREASON:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1428 ptr = (char *)http_parse_stsline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1429 state, ptr, end,
1430 &msg->next, &msg->msg_state);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1431 if (unlikely(!ptr))
1432 return;
1433
1434 /* we have a full response and we know that we have either a CR
1435 * or an LF at <ptr>.
1436 */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1437 hdr_idx_set_start(idx, msg->sl.st.l, *ptr == '\r');
1438
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1439 msg->sol = ptr - buf->p;
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1440 if (likely(*ptr == '\r'))
1441 EAT_AND_JUMP_OR_RETURN(http_msg_rpline_end, HTTP_MSG_RPLINE_END);
1442 goto http_msg_rpline_end;
1443
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1444 case HTTP_MSG_RPLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1445 http_msg_rpline_end:
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1446 /* msg->sol must point to the first of CR or LF. */
1447 EXPECT_LF_HERE(ptr, http_msg_invalid);
1448 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
1449 /* stop here */
1450
1451 /*
1452 * Second, states that are specific to the request only
1453 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1454 case HTTP_MSG_RQBEFORE:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1455 http_msg_rqbefore:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1456 if (likely(HTTP_IS_TOKEN(*ptr))) {
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1457 /* we have a start of message, but we have to check
1458 * first if we need to remove some CRLF. We can only
Willy Tarreau2e046c62012-03-01 16:08:30 +0100[diff] [blame]1459 * do this when o=0.
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1460 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1461 if (likely(ptr != buf->p)) {
1462 if (buf->o)
Willy Tarreau15de77e2010-01-02 21:59:16 +0100[diff] [blame]1463 goto http_msg_ood;
Willy Tarreau1d3bcce2009-12-27 15:50:06 +0100[diff] [blame]1464 /* Remove empty leading lines, as recommended by RFC2616. */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1465 bi_fast_delete(buf, ptr - buf->p);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1466 }
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1467 msg->sol = 0;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]1468 msg->sl.rq.l = 0; /* used in debug mode */
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1469 state = HTTP_MSG_RQMETH;
1470 goto http_msg_rqmeth;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1471 }
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1472
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1473 if (unlikely(!HTTP_IS_CRLF(*ptr)))
1474 goto http_msg_invalid;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1475
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1476 if (unlikely(*ptr == '\n'))
1477 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
1478 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore_cr, HTTP_MSG_RQBEFORE_CR);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1479 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1480
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1481 case HTTP_MSG_RQBEFORE_CR:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1482 http_msg_rqbefore_cr:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1483 EXPECT_LF_HERE(ptr, http_msg_invalid);
1484 EAT_AND_JUMP_OR_RETURN(http_msg_rqbefore, HTTP_MSG_RQBEFORE);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1485 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1486
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1487 case HTTP_MSG_RQMETH:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1488 http_msg_rqmeth:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1489 case HTTP_MSG_RQMETH_SP:
1490 case HTTP_MSG_RQURI:
1491 case HTTP_MSG_RQURI_SP:
1492 case HTTP_MSG_RQVER:
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1493 ptr = (char *)http_parse_reqline(msg,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1494 state, ptr, end,
1495 &msg->next, &msg->msg_state);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1496 if (unlikely(!ptr))
1497 return;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1498
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1499 /* we have a full request and we know that we have either a CR
1500 * or an LF at <ptr>.
1501 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1502 hdr_idx_set_start(idx, msg->sl.rq.l, *ptr == '\r');
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1503
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1504 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1505 if (likely(*ptr == '\r'))
1506 EAT_AND_JUMP_OR_RETURN(http_msg_rqline_end, HTTP_MSG_RQLINE_END);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1507 goto http_msg_rqline_end;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1508
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1509 case HTTP_MSG_RQLINE_END:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1510 http_msg_rqline_end:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1511 /* check for HTTP/0.9 request : no version information available.
1512 * msg->sol must point to the first of CR or LF.
1513 */
1514 if (unlikely(msg->sl.rq.v_l == 0))
1515 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1516
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1517 EXPECT_LF_HERE(ptr, http_msg_invalid);
1518 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_first, HTTP_MSG_HDR_FIRST);
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1519 /* stop here */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1520
Willy Tarreau8973c702007-01-21 23:58:29 +0100[diff] [blame]1521 /*
1522 * Common states below
1523 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1524 case HTTP_MSG_HDR_FIRST:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1525 http_msg_hdr_first:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1526 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1527 if (likely(!HTTP_IS_CRLF(*ptr))) {
1528 goto http_msg_hdr_name;
1529 }
1530
1531 if (likely(*ptr == '\r'))
1532 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1533 goto http_msg_last_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1534
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1535 case HTTP_MSG_HDR_NAME:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1536 http_msg_hdr_name:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1537 /* assumes msg->sol points to the first char */
1538 if (likely(HTTP_IS_TOKEN(*ptr)))
1539 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1540
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1541 if (likely(*ptr == ':'))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1542 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1543
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1544 if (likely(msg->err_pos < -1) || *ptr == '\n')
1545 goto http_msg_invalid;
1546
1547 if (msg->err_pos == -1) /* capture error pointer */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1548 msg->err_pos = ptr - buf->p; /* >= 0 now */
Willy Tarreau32a4ec02009-04-02 11:35:18 +0200[diff] [blame]1549
1550 /* and we still accept this non-token character */
1551 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_name, HTTP_MSG_HDR_NAME);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1552
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1553 case HTTP_MSG_HDR_L1_SP:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1554 http_msg_hdr_l1_sp:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1555 /* assumes msg->sol points to the first char */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1556 if (likely(HTTP_IS_SPHT(*ptr)))
1557 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_sp, HTTP_MSG_HDR_L1_SP);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1558
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1559 /* header value can be basically anything except CR/LF */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1560 msg->sov = ptr - buf->p;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1561
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1562 if (likely(!HTTP_IS_CRLF(*ptr))) {
1563 goto http_msg_hdr_val;
1564 }
1565
1566 if (likely(*ptr == '\r'))
1567 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lf, HTTP_MSG_HDR_L1_LF);
1568 goto http_msg_hdr_l1_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1569
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1570 case HTTP_MSG_HDR_L1_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1571 http_msg_hdr_l1_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1572 EXPECT_LF_HERE(ptr, http_msg_invalid);
1573 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l1_lws, HTTP_MSG_HDR_L1_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1574
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1575 case HTTP_MSG_HDR_L1_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1576 http_msg_hdr_l1_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1577 if (likely(HTTP_IS_SPHT(*ptr))) {
1578 /* replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1579 for (; buf->p + msg->sov < ptr; msg->sov++)
1580 buf->p[msg->sov] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1581 goto http_msg_hdr_l1_sp;
1582 }
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]1583 /* we had a header consisting only in spaces ! */
Willy Tarreau12e48b32012-03-05 16:57:34 +0100[diff] [blame]1584 msg->eol = msg->sov;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1585 goto http_msg_complete_header;
1586
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1587 case HTTP_MSG_HDR_VAL:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1588 http_msg_hdr_val:
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1589 /* assumes msg->sol points to the first char, and msg->sov
1590 * points to the first character of the value.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1591 */
1592 if (likely(!HTTP_IS_CRLF(*ptr)))
1593 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_val, HTTP_MSG_HDR_VAL);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1594
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1595 msg->eol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1596 /* Note: we could also copy eol into ->eoh so that we have the
1597 * real header end in case it ends with lots of LWS, but is this
1598 * really needed ?
1599 */
1600 if (likely(*ptr == '\r'))
1601 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lf, HTTP_MSG_HDR_L2_LF);
1602 goto http_msg_hdr_l2_lf;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1603
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1604 case HTTP_MSG_HDR_L2_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1605 http_msg_hdr_l2_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1606 EXPECT_LF_HERE(ptr, http_msg_invalid);
1607 EAT_AND_JUMP_OR_RETURN(http_msg_hdr_l2_lws, HTTP_MSG_HDR_L2_LWS);
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]1608
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1609 case HTTP_MSG_HDR_L2_LWS:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1610 http_msg_hdr_l2_lws:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1611 if (unlikely(HTTP_IS_SPHT(*ptr))) {
1612 /* LWS: replace HT,CR,LF with spaces */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1613 for (; buf->p + msg->eol < ptr; msg->eol++)
1614 buf->p[msg->eol] = ' ';
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1615 goto http_msg_hdr_val;
1616 }
1617 http_msg_complete_header:
1618 /*
1619 * It was a new header, so the last one is finished.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]1620 * Assumes msg->sol points to the first char, msg->sov points
1621 * to the first character of the value and msg->eol to the
1622 * first CR or LF so we know how the line ends. We insert last
1623 * header into the index.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1624 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1625 if (unlikely(hdr_idx_add(msg->eol - msg->sol, buf->p[msg->eol] == '\r',
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1626 idx, idx->tail) < 0))
1627 goto http_msg_invalid;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1628
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1629 msg->sol = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1630 if (likely(!HTTP_IS_CRLF(*ptr))) {
1631 goto http_msg_hdr_name;
1632 }
1633
1634 if (likely(*ptr == '\r'))
1635 EAT_AND_JUMP_OR_RETURN(http_msg_last_lf, HTTP_MSG_LAST_LF);
1636 goto http_msg_last_lf;
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1637
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1638 case HTTP_MSG_LAST_LF:
Willy Tarreaue3f284a2010-09-28 19:42:42 +0200[diff] [blame]1639 http_msg_last_lf:
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1640 /* Assumes msg->sol points to the first of either CR or LF */
1641 EXPECT_LF_HERE(ptr, http_msg_invalid);
1642 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1643 msg->sov = msg->next = ptr - buf->p;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]1644 msg->eoh = msg->sol;
1645 msg->sol = 0;
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1646 msg->msg_state = HTTP_MSG_BODY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1647 return;
Willy Tarreaub56928a2012-04-16 14:51:55 +0200[diff] [blame]1648
1649 case HTTP_MSG_ERROR:
1650 /* this may only happen if we call http_msg_analyser() twice with an error */
1651 break;
1652
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1653#ifdef DEBUG_FULL
1654 default:
1655 fprintf(stderr, "FIXME !!!! impossible state at %s:%d = %d\n", __FILE__, __LINE__, state);
1656 exit(1);
Willy Tarreau230fd0b2006-12-17 12:05:00 +0100[diff] [blame]1657#endif
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1658 }
1659 http_msg_ood:
1660 /* out of data */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1661 msg->msg_state = state;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1662 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1663 return;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]1664
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1665 http_msg_invalid:
1666 /* invalid message */
Willy Tarreaub326fcc2007-03-03 13:54:32 +0100[diff] [blame]1667 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1668 msg->next = ptr - buf->p;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]1669 return;
1670}
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]1671
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1672/* convert an HTTP/0.9 request into an HTTP/1.0 request. Returns 1 if the
1673 * conversion succeeded, 0 in case of error. If the request was already 1.X,
1674 * nothing is done and 1 is returned.
1675 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1676static int http_upgrade_v09_to_v10(struct http_txn *txn)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1677{
1678 int delta;
1679 char *cur_end;
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]1680 struct http_msg *msg = &txn->req;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1681
1682 if (msg->sl.rq.v_l != 0)
1683 return 1;
1684
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1685 cur_end = msg->chn->buf->p + msg->sl.rq.l;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1686 delta = 0;
1687
1688 if (msg->sl.rq.u_l == 0) {
1689 /* if no URI was set, add "/" */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1690 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " /", 2);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1691 cur_end += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1692 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1693 }
1694 /* add HTTP version */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1695 delta = buffer_replace2(msg->chn->buf, cur_end, cur_end, " HTTP/1.0\r\n", 11);
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]1696 http_msg_move_end(msg, delta);
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1697 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]1698 cur_end = (char *)http_parse_reqline(msg,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1699 HTTP_MSG_RQMETH,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1700 msg->chn->buf->p, cur_end + 1,
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]1701 NULL, NULL);
1702 if (unlikely(!cur_end))
1703 return 0;
1704
1705 /* we have a full HTTP/1.0 request now and we know that
1706 * we have either a CR or an LF at <ptr>.
1707 */
1708 hdr_idx_set_start(&txn->hdr_idx, msg->sl.rq.l, *cur_end == '\r');
1709 return 1;
1710}
1711
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1712/* Parse the Connection: header of an HTTP request, looking for both "close"
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1713 * and "keep-alive" values. If we already know that some headers may safely
1714 * be removed, we remove them now. The <to_del> flags are used for that :
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1715 * - bit 0 means remove "close" headers (in HTTP/1.0 requests/responses)
1716 * - bit 1 means remove "keep-alive" headers (in HTTP/1.1 reqs/resp to 1.1).
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1717 * Presence of the "Upgrade" token is also checked and reported.
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1718 * The TX_HDR_CONN_* flags are adjusted in txn->flags depending on what was
1719 * found, and TX_CON_*_SET is adjusted depending on what is left so only
1720 * harmless combinations may be removed. Do not call that after changes have
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1721 * been processed.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1722 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1723void http_parse_connection_header(struct http_txn *txn, struct http_msg *msg, int to_del)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1724{
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1725 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1726 const char *hdr_val = "Connection";
1727 int hdr_len = 10;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1728
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1729 if (txn->flags & TX_HDR_CONN_PRS)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1730 return;
1731
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1732 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1733 hdr_val = "Proxy-Connection";
1734 hdr_len = 16;
1735 }
1736
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1737 ctx.idx = 0;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1738 txn->flags &= ~(TX_CON_KAL_SET|TX_CON_CLO_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1739 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1740 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1741 txn->flags |= TX_HDR_CONN_KAL;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1742 if (to_del & 2)
1743 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1744 else
1745 txn->flags |= TX_CON_KAL_SET;
1746 }
1747 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1748 txn->flags |= TX_HDR_CONN_CLO;
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1749 if (to_del & 1)
1750 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1751 else
1752 txn->flags |= TX_CON_CLO_SET;
1753 }
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]1754 else if (ctx.vlen >= 7 && word_match(ctx.line + ctx.val, ctx.vlen, "upgrade", 7)) {
1755 txn->flags |= TX_HDR_CONN_UPG;
1756 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1757 }
1758
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1759 txn->flags |= TX_HDR_CONN_PRS;
1760 return;
1761}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1762
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1763/* Apply desired changes on the Connection: header. Values may be removed and/or
1764 * added depending on the <wanted> flags, which are exclusively composed of
1765 * TX_CON_CLO_SET and TX_CON_KAL_SET, depending on what flags are desired. The
1766 * TX_CON_*_SET flags are adjusted in txn->flags depending on what is left.
1767 */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1768void http_change_connection_header(struct http_txn *txn, struct http_msg *msg, int wanted)
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1769{
1770 struct hdr_ctx ctx;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1771 const char *hdr_val = "Connection";
1772 int hdr_len = 10;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1773
1774 ctx.idx = 0;
1775
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1776
1777 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1778 hdr_val = "Proxy-Connection";
1779 hdr_len = 16;
1780 }
1781
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1782 txn->flags &= ~(TX_CON_CLO_SET | TX_CON_KAL_SET);
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1783 while (http_find_header2(hdr_val, hdr_len, msg->chn->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1784 if (ctx.vlen >= 10 && word_match(ctx.line + ctx.val, ctx.vlen, "keep-alive", 10)) {
1785 if (wanted & TX_CON_KAL_SET)
1786 txn->flags |= TX_CON_KAL_SET;
1787 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1788 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1789 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1790 else if (ctx.vlen >= 5 && word_match(ctx.line + ctx.val, ctx.vlen, "close", 5)) {
1791 if (wanted & TX_CON_CLO_SET)
1792 txn->flags |= TX_CON_CLO_SET;
1793 else
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1794 http_remove_header2(msg, &txn->hdr_idx, &ctx);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]1795 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1796 }
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1797
1798 if (wanted == (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
1799 return;
1800
1801 if ((wanted & TX_CON_CLO_SET) && !(txn->flags & TX_CON_CLO_SET)) {
1802 txn->flags |= TX_CON_CLO_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1803 hdr_val = "Connection: close";
1804 hdr_len = 17;
1805 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1806 hdr_val = "Proxy-Connection: close";
1807 hdr_len = 23;
1808 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1809 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1810 }
1811
1812 if ((wanted & TX_CON_KAL_SET) && !(txn->flags & TX_CON_KAL_SET)) {
1813 txn->flags |= TX_CON_KAL_SET;
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]1814 hdr_val = "Connection: keep-alive";
1815 hdr_len = 22;
1816 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
1817 hdr_val = "Proxy-Connection: keep-alive";
1818 hdr_len = 28;
1819 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]1820 http_header_add_tail2(msg, &txn->hdr_idx, hdr_val, hdr_len);
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]1821 }
1822 return;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]1823}
1824
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1825/* Parse the chunk size at msg->next. Once done, it adjusts ->next to point to the
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1826 * first byte of body, and increments msg->sov by the number of bytes parsed,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1827 * so that we know we can forward between ->sol and ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1828 * Return >0 on success, 0 when some data is missing, <0 on error.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1829 * Note: this function is designed to parse wrapped CRLF at the end of the buffer.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1830 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1831static inline int http_parse_chunk_size(struct http_msg *msg)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1832{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1833 const struct buffer *buf = msg->chn->buf;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1834 const char *ptr = b_ptr(buf, msg->next);
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1835 const char *ptr_old = ptr;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1836 const char *end = buf->data + buf->size;
1837 const char *stop = bi_end(buf);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1838 unsigned int chunk = 0;
1839
1840 /* The chunk size is in the following form, though we are only
1841 * interested in the size and CRLF :
1842 * 1*HEXDIGIT *WSP *[ ';' extensions ] CRLF
1843 */
1844 while (1) {
1845 int c;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1846 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1847 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1848 c = hex2i(*ptr);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1849 if (c < 0) /* not a hex digit anymore */
1850 break;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1851 if (unlikely(++ptr >= end))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1852 ptr = buf->data;
Willy Tarreau431946e2012-02-24 19:20:12 +0100[diff] [blame]1853 if (chunk & 0xF8000000) /* integer overflow will occur if result >= 2GB */
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1854 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1855 chunk = (chunk << 4) + c;
1856 }
1857
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1858 /* empty size not allowed */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1859 if (unlikely(ptr == ptr_old))
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1860 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1861
1862 while (http_is_spht[(unsigned char)*ptr]) {
1863 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1864 ptr = buf->data;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1865 if (unlikely(ptr == stop))
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1866 return 0;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1867 }
1868
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1869 /* Up to there, we know that at least one byte is present at *ptr. Check
1870 * for the end of chunk size.
1871 */
1872 while (1) {
1873 if (likely(HTTP_IS_CRLF(*ptr))) {
1874 /* we now have a CR or an LF at ptr */
1875 if (likely(*ptr == '\r')) {
1876 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1877 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1878 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1879 return 0;
1880 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1881
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1882 if (*ptr != '\n')
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1883 goto error;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1884 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1885 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1886 /* done */
1887 break;
1888 }
1889 else if (*ptr == ';') {
1890 /* chunk extension, ends at next CRLF */
1891 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1892 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1893 if (ptr == stop)
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1894 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1895
1896 while (!HTTP_IS_CRLF(*ptr)) {
1897 if (++ptr >= end)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1898 ptr = buf->data;
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1899 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1900 return 0;
1901 }
1902 /* we have a CRLF now, loop above */
1903 continue;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1904 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1905 else
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1906 goto error;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1907 }
1908
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1909 /* OK we found our CRLF and now <ptr> points to the next byte,
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1910 * which may or may not be present. We save that into ->next and
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1911 * ->sov.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1912 */
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]1913 if (unlikely(ptr < ptr_old))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1914 msg->sov += buf->size;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1915 msg->sov += ptr - ptr_old;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1916 msg->next = buffer_count(buf, buf->p, ptr);
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]1917 msg->chunk_len = chunk;
1918 msg->body_len += chunk;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1919 msg->msg_state = chunk ? HTTP_MSG_DATA : HTTP_MSG_TRAILERS;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1920 return 1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1921 error:
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1922 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1923 return -1;
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]1924}
1925
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1926/* This function skips trailers in the buffer associated with HTTP
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1927 * message <msg>. The first visited position is msg->next. If the end of
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1928 * the trailers is found, it is automatically scheduled to be forwarded,
1929 * msg->msg_state switches to HTTP_MSG_DONE, and the function returns >0.
1930 * If not enough data are available, the function does not change anything
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1931 * except maybe msg->next and msg->sov if it could parse some lines, and returns
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1932 * zero. If a parse error is encountered, the function returns < 0 and does not
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1933 * change anything except maybe msg->next and msg->sov. Note that the message
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1934 * must already be in HTTP_MSG_TRAILERS state before calling this function,
1935 * which implies that all non-trailers data have already been scheduled for
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]1936 * forwarding, and that the difference between msg->sol and msg->sov exactly
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1937 * matches the length of trailers already parsed and not forwarded. It is also
1938 * important to note that this function is designed to be able to parse wrapped
1939 * headers at end of buffer.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1940 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]1941static int http_forward_trailers(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1942{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]1943 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1944
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]1945 /* we have msg->next which points to next line. Look for CRLF. */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1946 while (1) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]1947 const char *p1 = NULL, *p2 = NULL;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1948 const char *ptr = b_ptr(buf, msg->next);
1949 const char *stop = bi_end(buf);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1950 int bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1951
1952 /* scan current line and stop at LF or CRLF */
1953 while (1) {
Willy Tarreau363a5bb2012-03-02 20:14:45 +0100[diff] [blame]1954 if (ptr == stop)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1955 return 0;
1956
1957 if (*ptr == '\n') {
1958 if (!p1)
1959 p1 = ptr;
1960 p2 = ptr;
1961 break;
1962 }
1963
1964 if (*ptr == '\r') {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1965 if (p1) {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1966 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1967 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]1968 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1969 p1 = ptr;
1970 }
1971
1972 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1973 if (ptr >= buf->data + buf->size)
1974 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1975 }
1976
1977 /* after LF; point to beginning of next line */
1978 p2++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1979 if (p2 >= buf->data + buf->size)
1980 p2 = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1981
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1982 bytes = p2 - b_ptr(buf, msg->next);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1983 if (bytes < 0)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1984 bytes += buf->size;
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1985
1986 /* schedule this line for forwarding */
1987 msg->sov += bytes;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1988 if (msg->sov >= buf->size)
1989 msg->sov -= buf->size;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1990
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1991 if (p1 == b_ptr(buf, msg->next)) {
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]1992 /* LF/CRLF at beginning of line => end of trailers at p2.
1993 * Everything was scheduled for forwarding, there's nothing
1994 * left from this message.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]1995 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]1996 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]1997 msg->msg_state = HTTP_MSG_DONE;
1998 return 1;
1999 }
2000 /* OK, next line then */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2001 msg->next = buffer_count(buf, buf->p, p2);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2002 }
2003}
2004
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]2005/* This function may be called only in HTTP_MSG_CHUNK_CRLF. It reads the CRLF or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2006 * a possible LF alone at the end of a chunk. It automatically adjusts msg->sov,
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2007 * ->sol, ->next in order to include this part into the next forwarding phase.
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2008 * Note that the caller must ensure that ->p points to the first byte to parse.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2009 * It also sets msg_state to HTTP_MSG_CHUNK_SIZE and returns >0 on success. If
2010 * not enough data are available, the function does not change anything and
2011 * returns zero. If a parse error is encountered, the function returns < 0 and
2012 * does not change anything. Note: this function is designed to parse wrapped
2013 * CRLF at the end of the buffer.
2014 */
Willy Tarreau24e6d972012-10-26 00:49:52 +0200[diff] [blame]2015static inline int http_skip_chunk_crlf(struct http_msg *msg)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2016{
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2017 const struct buffer *buf = msg->chn->buf;
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]2018 const char *ptr;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2019 int bytes;
2020
2021 /* NB: we'll check data availabilty at the end. It's not a
2022 * problem because whatever we match first will be checked
2023 * against the correct length.
2024 */
2025 bytes = 1;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2026 ptr = buf->p;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2027 if (*ptr == '\r') {
2028 bytes++;
2029 ptr++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2030 if (ptr >= buf->data + buf->size)
2031 ptr = buf->data;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2032 }
2033
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2034 if (bytes > buf->i)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2035 return 0;
2036
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2037 if (*ptr != '\n') {
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2038 msg->err_pos = buffer_count(buf, buf->p, ptr);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2039 return -1;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]2040 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2041
2042 ptr++;
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]2043 if (unlikely(ptr >= buf->data + buf->size))
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]2044 ptr = buf->data;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2045 /* prepare the CRLF to be forwarded (between ->sol and ->sov) */
2046 msg->sol = 0;
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]2047 msg->sov = msg->next = bytes;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]2048 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
2049 return 1;
2050}
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2051
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2052
2053/*
2054 * Selects a compression algorithm depending on the client request.
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2055 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2056int select_compression_request_header(struct session *s, struct buffer *req)
2057{
2058 struct http_txn *txn = &s->txn;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2059 struct http_msg *msg = &txn->req;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2060 struct hdr_ctx ctx;
2061 struct comp_algo *comp_algo = NULL;
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2062 struct comp_algo *comp_algo_back = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2063
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2064 /* Disable compression for older user agents announcing themselves as "Mozilla/4"
2065 * unless they are known good (MSIE 6 with XP SP2, or MSIE 7 and later).
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2066 * See http://zoompf.com/2012/02/lose-the-wait-http-compression for more details.
2067 */
2068 ctx.idx = 0;
2069 if (http_find_header2("User-Agent", 10, req->p, &txn->hdr_idx, &ctx) &&
2070 ctx.vlen >= 9 &&
Finn Arne Gangstadcbb9a4b2012-10-29 21:43:01 +0100[diff] [blame]2071 memcmp(ctx.line + ctx.val, "Mozilla/4", 9) == 0 &&
2072 (ctx.vlen < 31 ||
2073 memcmp(ctx.line + ctx.val + 25, "MSIE ", 5) != 0 ||
2074 ctx.line[ctx.val + 30] < '6' ||
2075 (ctx.line[ctx.val + 30] == '6' &&
2076 (ctx.vlen < 54 || memcmp(ctx.line + 51, "SV1", 3) != 0)))) {
2077 s->comp_algo = NULL;
2078 return 0;
Willy Tarreau05d84602012-10-26 02:11:25 +0200[diff] [blame]2079 }
2080
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2081 /* search for the algo in the backend in priority or the frontend */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2082 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2083 ctx.idx = 0;
2084 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2085 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2086 if (word_match(ctx.line + ctx.val, ctx.vlen, comp_algo->name, comp_algo->name_len)) {
2087 s->comp_algo = comp_algo;
Willy Tarreau70737d12012-10-27 00:34:28 +0200[diff] [blame]2088
2089 /* remove all occurrences of the header when "compression offload" is set */
2090
2091 if ((s->be->comp && s->be->comp->offload) ||
2092 (s->fe->comp && s->fe->comp->offload)) {
2093 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2094 ctx.idx = 0;
2095 while (http_find_header2("Accept-Encoding", 15, req->p, &txn->hdr_idx, &ctx)) {
2096 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2097 }
2098 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2099 return 1;
2100 }
2101 }
2102 }
2103 }
2104
2105 /* identity is implicit does not require headers */
Willy Tarreau3c7b97b2012-10-26 14:50:26 +0200[diff] [blame]2106 if ((s->be->comp && (comp_algo_back = s->be->comp->algos)) || (s->fe->comp && (comp_algo_back = s->fe->comp->algos))) {
2107 for (comp_algo = comp_algo_back; comp_algo; comp_algo = comp_algo->next) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2108 if (comp_algo->add_data == identity_add_data) {
2109 s->comp_algo = comp_algo;
2110 return 1;
2111 }
2112 }
2113 }
2114
2115 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2116 return 0;
2117}
2118
2119/*
2120 * Selects a comression algorithm depending of the server response.
2121 */
2122int select_compression_response_header(struct session *s, struct buffer *res)
2123{
2124 struct http_txn *txn = &s->txn;
2125 struct http_msg *msg = &txn->rsp;
2126 struct hdr_ctx ctx;
2127 struct comp_type *comp_type;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2128
2129 /* no common compression algorithm was found in request header */
2130 if (s->comp_algo == NULL)
2131 goto fail;
2132
2133 /* HTTP < 1.1 should not be compressed */
2134 if (!(msg->flags & HTTP_MSGF_VER_11))
2135 goto fail;
2136
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2137 /* 200 only */
2138 if (txn->status != 200)
2139 goto fail;
2140
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2141 /* Content-Length is null */
2142 if (!(msg->flags & HTTP_MSGF_TE_CHNK) && msg->body_len == 0)
2143 goto fail;
2144
Willy Tarreau667c2a32013-04-09 08:13:58 +0200[diff] [blame]2145 /* TEMPORARY WORKAROUND: do not compress if response is chunked !!!!!! */
2146 if (msg->flags & HTTP_MSGF_TE_CHNK)
2147 goto fail;
2148
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2149 /* content is already compressed */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2150 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2151 if (http_find_header2("Content-Encoding", 16, res->p, &txn->hdr_idx, &ctx))
2152 goto fail;
2153
Willy Tarreau56e9ffa2013-01-05 16:20:35 +0100[diff] [blame]2154 /* no compression when Cache-Control: no-transform is present in the message */
2155 ctx.idx = 0;
2156 while (http_find_header2("Cache-Control", 13, res->p, &txn->hdr_idx, &ctx)) {
2157 if (word_match(ctx.line + ctx.val, ctx.vlen, "no-transform", 12))
2158 goto fail;
2159 }
2160
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2161 comp_type = NULL;
2162
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2163 /* we don't want to compress multipart content-types, nor content-types that are
2164 * not listed in the "compression type" directive if any. If no content-type was
2165 * found but configuration requires one, we don't compress either. Backend has
2166 * the priority.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2167 */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2168 ctx.idx = 0;
2169 if (http_find_header2("Content-Type", 12, res->p, &txn->hdr_idx, &ctx)) {
2170 if (ctx.vlen >= 9 && strncasecmp("multipart", ctx.line+ctx.val, 9) == 0)
2171 goto fail;
2172
2173 if ((s->be->comp && (comp_type = s->be->comp->types)) ||
2174 (s->fe->comp && (comp_type = s->fe->comp->types))) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2175 for (; comp_type; comp_type = comp_type->next) {
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2176 if (ctx.vlen >= comp_type->name_len &&
2177 strncasecmp(ctx.line+ctx.val, comp_type->name, comp_type->name_len) == 0)
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2178 /* this Content-Type should be compressed */
2179 break;
2180 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2181 /* this Content-Type should not be compressed */
2182 if (comp_type == NULL)
2183 goto fail;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2184 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2185 }
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2186 else { /* no content-type header */
2187 if ((s->be->comp && s->be->comp->types) || (s->fe->comp && s->fe->comp->types))
2188 goto fail; /* a content-type was required */
William Lallemandd3002612012-11-26 14:34:47 +0100[diff] [blame]2189 }
2190
William Lallemandd85f9172012-11-09 17:05:39 +0100[diff] [blame]2191 /* limit compression rate */
2192 if (global.comp_rate_lim > 0)
2193 if (read_freq_ctr(&global.comp_bps_in) > global.comp_rate_lim)
2194 goto fail;
2195
William Lallemand072a2bf2012-11-20 17:01:01 +0100[diff] [blame]2196 /* limit cpu usage */
2197 if (idle_pct < compress_min_idle)
2198 goto fail;
2199
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2200 /* initialize compression */
William Lallemandf3747832012-11-09 12:33:10 +0100[diff] [blame]2201 if (s->comp_algo->init(&s->comp_ctx, global.tune.comp_maxlevel) < 0)
William Lallemand4c49fae2012-11-07 15:00:23 +0100[diff] [blame]2202 goto fail;
2203
William Lallemandec3e3892012-11-12 17:02:18 +0100[diff] [blame]2204 s->flags |= SN_COMP_READY;
2205
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2206 /* remove Content-Length header */
Willy Tarreau0a80a8d2012-11-26 16:33:37 +0100[diff] [blame]2207 ctx.idx = 0;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2208 if ((msg->flags & HTTP_MSGF_CNT_LEN) && http_find_header2("Content-Length", 14, res->p, &txn->hdr_idx, &ctx))
2209 http_remove_header2(msg, &txn->hdr_idx, &ctx);
2210
2211 /* add Transfer-Encoding header */
2212 if (!(msg->flags & HTTP_MSGF_TE_CHNK))
2213 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, "Transfer-Encoding: chunked", 26);
2214
2215 /*
2216 * Add Content-Encoding header when it's not identity encoding.
2217 * RFC 2616 : Identity encoding: This content-coding is used only in the
2218 * Accept-Encoding header, and SHOULD NOT be used in the Content-Encoding
2219 * header.
2220 */
2221 if (s->comp_algo->add_data != identity_add_data) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]2222 trash.len = 18;
2223 memcpy(trash.str, "Content-Encoding: ", trash.len);
2224 memcpy(trash.str + trash.len, s->comp_algo->name, s->comp_algo->name_len);
2225 trash.len += s->comp_algo->name_len;
2226 trash.str[trash.len] = '\0';
2227 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2228 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2229 return 1;
2230
2231fail:
Willy Tarreaub97b6192012-11-19 14:55:02 +0100[diff] [blame]2232 s->comp_algo = NULL;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]2233 return 0;
2234}
2235
2236
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2237/* This stream analyser waits for a complete HTTP request. It returns 1 if the
2238 * processing can continue on next analysers, or zero if it either needs more
2239 * data or wants to immediately abort the request (eg: timeout, error, ...). It
2240 * is tied to AN_REQ_WAIT_HTTP and may may remove itself from s->req->analysers
2241 * when it has nothing left to do, and may remove any analyser when it wants to
2242 * abort.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2243 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]2244int http_wait_for_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2245{
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2246 /*
2247 * We will parse the partial (or complete) lines.
2248 * We will check the request syntax, and also join multi-line
2249 * headers. An index of all the lines will be elaborated while
2250 * parsing.
2251 *
2252 * For the parsing, we use a 28 states FSM.
2253 *
2254 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2255 * req->buf->p = beginning of request
2256 * req->buf->p + msg->eoh = end of processed headers / start of current one
2257 * req->buf->p + req->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]2258 * msg->eol = end of current header or line (LF or CRLF)
2259 * msg->next = first non-visited byte
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2260 *
2261 * At end of parsing, we may perform a capture of the error (if any), and
2262 * we will set a few fields (msg->sol, txn->meth, sn->flags/SN_REDIRECTABLE).
2263 * We also check for monitor-uri, logging, HTTP/0.9 to 1.0 conversion, and
2264 * finally headers capture.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2265 */
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2266
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2267 int cur_idx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2268 int use_close_only;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2269 struct http_txn *txn = &s->txn;
2270 struct http_msg *msg = &txn->req;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2271 struct hdr_ctx ctx;
Willy Tarreau976f1ee2006-12-17 10:06:03 +0100[diff] [blame]2272
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]2273 DPRINTF(stderr,"[%u] %s: session=%p b=%p, exp(r,w)=%u,%u bf=%08x bh=%d analysers=%02x\n",
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2274 now_ms, __FUNCTION__,
2275 s,
2276 req,
2277 req->rex, req->wex,
2278 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2279 req->buf->i,
Willy Tarreau6bf17362009-02-24 10:48:35 +0100[diff] [blame]2280 req->analysers);
2281
Willy Tarreau52a0c602009-08-16 22:45:38 +0200[diff] [blame]2282 /* we're speaking HTTP here, so let's speak HTTP to the client */
2283 s->srv_error = http_return_srv_error;
2284
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2285 /* There's a protected area at the end of the buffer for rewriting
2286 * purposes. We don't want to start to parse the request if the
2287 * protected area is affected, because we may have to move processed
2288 * data later, which is much more complicated.
2289 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2290 if (buffer_not_empty(req->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2291 if (txn->flags & TX_NOT_FIRST) {
2292 if (unlikely(!channel_reserved(req))) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2293 if (req->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2294 goto failed_keep_alive;
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2295 /* some data has still not left the buffer, wake us once that's done */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2296 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2297 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
Willy Tarreau2ab6eb12010-01-02 22:04:45 +0100[diff] [blame]2298 return 0;
2299 }
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2300 if (unlikely(bi_end(req->buf) < b_ptr(req->buf, msg->next) ||
2301 bi_end(req->buf) > req->buf->data + req->buf->size - global.tune.maxrewrite))
2302 buffer_slow_realign(req->buf);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2303 }
2304
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2305 /* Note that we have the same problem with the response ; we
2306 * may want to send a redirect, error or anything which requires
2307 * some spare space. So we'll ensure that we have at least
2308 * maxrewrite bytes available in the response buffer before
2309 * processing that one. This will only affect pipelined
2310 * keep-alive requests.
2311 */
2312 if ((txn->flags & TX_NOT_FIRST) &&
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]2313 unlikely(!channel_reserved(s->rep) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2314 bi_end(s->rep->buf) < b_ptr(s->rep->buf, txn->rsp.next) ||
2315 bi_end(s->rep->buf) > s->rep->buf->data + s->rep->buf->size - global.tune.maxrewrite)) {
2316 if (s->rep->buf->o) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2317 if (s->rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]2318 goto failed_keep_alive;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2319 /* don't let a connection request be initiated */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2320 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2321 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau0499e352010-12-17 07:13:42 +0100[diff] [blame]2322 s->rep->analysers |= an_bit; /* wake us up once it changes */
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]2323 return 0;
2324 }
2325 }
2326
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2327 if (likely(msg->next < req->buf->i)) /* some unparsed data are available */
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]2328 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]2329 }
2330
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2331 /* 1: we might have to print this header in debug mode */
2332 if (unlikely((global.mode & MODE_DEBUG) &&
2333 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2334 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2335 char *eol, *sol;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2336
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2337 sol = req->buf->p;
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]2338 /* this is a bit complex : in case of error on the request line,
2339 * we know that rq.l is still zero, so we display only the part
2340 * up to the end of the line (truncated by debug_hdr).
2341 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2342 eol = sol + (msg->sl.rq.l ? msg->sl.rq.l : req->buf->i);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2343 debug_hdr("clireq", s, sol, eol);
Willy Tarreau45e73e32006-12-17 00:05:15 +0100[diff] [blame]2344
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2345 sol += hdr_idx_first_pos(&txn->hdr_idx);
2346 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2347
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2348 while (cur_idx) {
2349 eol = sol + txn->hdr_idx.v[cur_idx].len;
2350 debug_hdr("clihdr", s, sol, eol);
2351 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
2352 cur_idx = txn->hdr_idx.v[cur_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2353 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2354 }
2355
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2356
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2357 /*
2358 * Now we quickly check if we have found a full valid request.
2359 * If not so, we check the FD and buffer states before leaving.
2360 * A full request is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2361 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2362 * requests are checked first. When waiting for a second request
2363 * on a keep-alive session, if we encounter and error, close, t/o,
2364 * we note the error in the session flags but don't set any state.
2365 * Since the error will be noted there, it will not be counted by
2366 * process_session() as a frontend error.
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2367 * Last, we may increase some tracked counters' http request errors on
2368 * the cases that are deliberately the client's fault. For instance,
2369 * a timeout or connection reset is not counted as an error. However
2370 * a bad request is.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2371 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2372
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]2373 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2374 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2375 * First, let's catch bad requests.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2376 */
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2377 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2378 session_inc_http_req_ctr(s);
2379 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2380 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2381 goto return_bad_req;
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2382 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2383
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2384 /* 1: Since we are in header mode, if there's no space
2385 * left for headers, we won't be able to free more
2386 * later, so the session will never terminate. We
2387 * must terminate it now.
2388 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2389 if (unlikely(buffer_full(req->buf, global.tune.maxrewrite))) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2390 /* FIXME: check if URI is set and return Status
2391 * 414 Request URI too long instead.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2392 */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2393 session_inc_http_req_ctr(s);
2394 session_inc_http_err_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2395 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]2396 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2397 msg->err_pos = req->buf->i;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2398 goto return_bad_req;
2399 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2400
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2401 /* 2: have we encountered a read error ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2402 else if (req->flags & CF_READ_ERROR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2403 if (!(s->flags & SN_ERR_MASK))
2404 s->flags |= SN_ERR_CLICL;
2405
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2406 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2407 goto failed_keep_alive;
2408
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2409 /* we cannot return any message on error */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2410 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2411 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2412 session_inc_http_err_ctr(s);
2413 }
2414
Willy Tarreaudc979f22012-12-04 10:39:01 +0100[diff] [blame]2415 txn->status = 400;
2416 stream_int_retnclose(req->prod, NULL);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2417 msg->msg_state = HTTP_MSG_ERROR;
2418 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2419
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2420 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2421 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2422 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2423 if (s->listener->counters)
2424 s->listener->counters->failed_req++;
2425
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2426 if (!(s->flags & SN_FINST_MASK))
2427 s->flags |= SN_FINST_R;
2428 return 0;
2429 }
Willy Tarreauf9839bd2008-08-27 23:57:16 +0200[diff] [blame]2430
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2431 /* 3: has the read timeout expired ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2432 else if (req->flags & CF_READ_TIMEOUT || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2433 if (!(s->flags & SN_ERR_MASK))
2434 s->flags |= SN_ERR_CLITO;
2435
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2436 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2437 goto failed_keep_alive;
2438
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2439 /* read timeout : give up with an error message. */
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2440 if (msg->err_pos >= 0) {
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2441 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2442 session_inc_http_err_ctr(s);
2443 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2444 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2445 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2446 msg->msg_state = HTTP_MSG_ERROR;
2447 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2448
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2449 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2450 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2451 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2452 if (s->listener->counters)
2453 s->listener->counters->failed_req++;
2454
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2455 if (!(s->flags & SN_FINST_MASK))
2456 s->flags |= SN_FINST_R;
2457 return 0;
2458 }
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]2459
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2460 /* 4: have we encountered a close ? */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2461 else if (req->flags & CF_SHUTR) {
Willy Tarreaud3c343f2010-01-16 10:26:19 +0100[diff] [blame]2462 if (!(s->flags & SN_ERR_MASK))
2463 s->flags |= SN_ERR_CLICL;
2464
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2465 if (txn->flags & TX_WAIT_NEXT_RQ)
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2466 goto failed_keep_alive;
2467
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2468 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2469 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2470 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2471 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2472 msg->msg_state = HTTP_MSG_ERROR;
2473 req->analysers = 0;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2474
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2475 session_inc_http_err_ctr(s);
2476 session_inc_http_req_ctr(s);
Willy Tarreau3e1b6d12010-03-04 23:02:38 +0100[diff] [blame]2477 proxy_inc_fe_req_ctr(s->fe);
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2478 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2479 if (s->listener->counters)
2480 s->listener->counters->failed_req++;
2481
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2482 if (!(s->flags & SN_FINST_MASK))
2483 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]2484 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2485 }
2486
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]2487 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2488 req->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
2489 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2490#ifdef TCP_QUICKACK
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]2491 if (s->listener->options & LI_O_NOQUICKACK && req->buf->i && objt_conn(s->req->prod->end) && (__objt_conn(s->req->prod->end)->flags & CO_FL_CTRL_READY)) {
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]2492 /* We need more data, we have to re-enable quick-ack in case we
2493 * previously disabled it, otherwise we might cause the client
2494 * to delay next data.
2495 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2496 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]2497 }
2498#endif
Willy Tarreau1b194fe2009-03-21 21:10:04 +0100[diff] [blame]2499
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2500 if ((msg->msg_state != HTTP_MSG_RQBEFORE) && (txn->flags & TX_WAIT_NEXT_RQ)) {
2501 /* If the client starts to talk, let's fall back to
2502 * request timeout processing.
2503 */
2504 txn->flags &= ~TX_WAIT_NEXT_RQ;
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2505 req->analyse_exp = TICK_ETERNITY;
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]2506 }
2507
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2508 /* just set the request timeout once at the beginning of the request */
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2509 if (!tick_isset(req->analyse_exp)) {
2510 if ((msg->msg_state == HTTP_MSG_RQBEFORE) &&
2511 (txn->flags & TX_WAIT_NEXT_RQ) &&
2512 tick_isset(s->be->timeout.httpka))
2513 req->analyse_exp = tick_add(now_ms, s->be->timeout.httpka);
2514 else
2515 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
2516 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2517
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2518 /* we're not ready yet */
2519 return 0;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2520
2521 failed_keep_alive:
2522 /* Here we process low-level errors for keep-alive requests. In
2523 * short, if the request is not the first one and it experiences
2524 * a timeout, read error or shutdown, we just silently close so
2525 * that the client can try again.
2526 */
2527 txn->status = 0;
2528 msg->msg_state = HTTP_MSG_RQBEFORE;
2529 req->analysers = 0;
2530 s->logs.logwait = 0;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]2531 s->logs.level = 0;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]2532 s->rep->flags &= ~CF_EXPECT_MORE; /* speed up sending a previous response */
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]2533 stream_int_retnclose(req->prod, NULL);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]2534 return 0;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2535 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2536
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2537 /* OK now we have a complete HTTP request with indexed headers. Let's
2538 * complete the request parsing by setting a few fields we will need
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2539 * later. At this point, we have the last CRLF at req->buf->data + msg->eoh.
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]2540 * If the request is in HTTP/0.9 form, the rule is still true, and eoh
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]2541 * points to the CRLF of the request line. msg->next points to the first
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]2542 * byte after the last LF. msg->sov points to the first byte of data.
2543 * msg->eol cannot be trusted because it may have been left uninitialized
2544 * (for instance in the absence of headers).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2545 */
Willy Tarreau9cdde232007-05-02 20:58:19 +0200[diff] [blame]2546
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]2547 session_inc_http_req_ctr(s);
Willy Tarreaud9b587f2010-02-26 10:05:55 +0100[diff] [blame]2548 proxy_inc_fe_req_ctr(s->fe); /* one more valid request for this FE */
2549
Willy Tarreaub16a5742010-01-10 14:46:16 +0100[diff] [blame]2550 if (txn->flags & TX_WAIT_NEXT_RQ) {
2551 /* kill the pending keep-alive timeout */
2552 txn->flags &= ~TX_WAIT_NEXT_RQ;
2553 req->analyse_exp = TICK_ETERNITY;
2554 }
2555
2556
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2557 /* Maybe we found in invalid header name while we were configured not
2558 * to block on that, so we have to capture it now.
2559 */
2560 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2561 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]2562
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2563 /*
2564 * 1: identify the method
2565 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2566 txn->meth = find_http_meth(req->buf->p, msg->sl.rq.m_l);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2567
2568 /* we can make use of server redirect on GET and HEAD */
2569 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
2570 s->flags |= SN_REDIRECTABLE;
Willy Tarreaufa7e1022008-10-19 07:30:41 +0200[diff] [blame]2571
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2572 /*
2573 * 2: check if the URI matches the monitor_uri.
2574 * We have to do this for every request which gets in, because
2575 * the monitor-uri is defined by the frontend.
2576 */
2577 if (unlikely((s->fe->monitor_uri_len != 0) &&
2578 (s->fe->monitor_uri_len == msg->sl.rq.u_l) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2579 !memcmp(req->buf->p + msg->sl.rq.u,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2580 s->fe->monitor_uri,
2581 s->fe->monitor_uri_len))) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2582 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2583 * We have found the monitor URI
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2584 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2585 struct acl_cond *cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2586
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2587 s->flags |= SN_MONITOR;
Willy Tarreaueabea072011-09-10 23:29:44 +0200[diff] [blame]2588 s->fe->fe_counters.intercepted_req++;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2589
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2590 /* Check if we want to fail this monitor request or not */
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2591 list_for_each_entry(cond, &s->fe->mon_fail_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2592 int ret = acl_exec_cond(cond, s->fe, s, txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2593
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2594 ret = acl_pass(ret);
2595 if (cond->pol == ACL_COND_UNLESS)
2596 ret = !ret;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2597
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2598 if (ret) {
2599 /* we fail this request, let's return 503 service unavail */
2600 txn->status = 503;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2601 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_503));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2602 if (!(s->flags & SN_ERR_MASK))
2603 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2604 goto return_prx_cond;
Willy Tarreaub80c2302007-11-30 20:51:32 +0100[diff] [blame]2605 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2606 }
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]2607
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2608 /* nothing to fail, let's reply normaly */
2609 txn->status = 200;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2610 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_200));
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]2611 if (!(s->flags & SN_ERR_MASK))
2612 s->flags |= SN_ERR_LOCAL; /* we don't want a real error here */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2613 goto return_prx_cond;
2614 }
2615
2616 /*
2617 * 3: Maybe we have to copy the original REQURI for the logs ?
2618 * Note: we cannot log anymore if the request has been
2619 * classified as invalid.
2620 */
2621 if (unlikely(s->logs.logwait & LW_REQ)) {
2622 /* we have a complete HTTP request that we must log */
2623 if ((txn->uri = pool_alloc2(pool2_requri)) != NULL) {
2624 int urilen = msg->sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2625
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2626 if (urilen >= REQURI_LEN)
2627 urilen = REQURI_LEN - 1;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2628 memcpy(txn->uri, req->buf->p, urilen);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2629 txn->uri[urilen] = 0;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2630
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]2631 if (!(s->logs.logwait &= ~(LW_REQ|LW_INIT)))
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2632 s->do_log(s);
2633 } else {
2634 Alert("HTTP logging : out of memory.\n");
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]2635 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2636 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]2637
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2638 /* 4. We may have to convert HTTP/0.9 requests to HTTP/1.0 */
Willy Tarreau418bfcc2012-03-09 13:56:20 +0100[diff] [blame]2639 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]2640 goto return_bad_req;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]2641
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2642 /* ... and check if the request is HTTP/1.1 or above */
2643 if ((msg->sl.rq.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2644 ((req->buf->p[msg->sl.rq.v + 5] > '1') ||
2645 ((req->buf->p[msg->sl.rq.v + 5] == '1') &&
2646 (req->buf->p[msg->sl.rq.v + 7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2647 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2648
2649 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]2650 txn->flags &= ~(TX_HDR_CONN_PRS | TX_HDR_CONN_CLO | TX_HDR_CONN_KAL | TX_HDR_CONN_UPG);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]2651
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2652 /* if the frontend has "option http-use-proxy-header", we'll check if
2653 * we have what looks like a proxied connection instead of a connection,
2654 * and in this case set the TX_USE_PX_CONN flag to use Proxy-connection.
2655 * Note that this is *not* RFC-compliant, however browsers and proxies
2656 * happen to do that despite being non-standard :-(
2657 * We consider that a request not beginning with either '/' or '*' is
2658 * a proxied connection, which covers both "scheme://location" and
2659 * CONNECT ip:port.
2660 */
2661 if ((s->fe->options2 & PR_O2_USE_PXHDR) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2662 req->buf->p[msg->sl.rq.u] != '/' && req->buf->p[msg->sl.rq.u] != '*')
Willy Tarreau88d349d2010-01-25 12:15:43 +0100[diff] [blame]2663 txn->flags |= TX_USE_PX_CONN;
2664
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2665 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2666 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2667
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2668 /* 5: we may need to capture headers */
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]2669 if (unlikely((s->logs.logwait & LW_REQHDR) && txn->req.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2670 capture_headers(req->buf->p, &txn->hdr_idx,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]2671 txn->req.cap, s->fe->req_cap);
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]2672
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2673 /* 6: determine the transfer-length.
2674 * According to RFC2616 #4.4, amended by the HTTPbis working group,
2675 * the presence of a message-body in a REQUEST and its transfer length
2676 * must be determined that way (in order of precedence) :
2677 * 1. The presence of a message-body in a request is signaled by the
2678 * inclusion of a Content-Length or Transfer-Encoding header field
2679 * in the request's header fields. When a request message contains
2680 * both a message-body of non-zero length and a method that does
2681 * not define any semantics for that request message-body, then an
2682 * origin server SHOULD either ignore the message-body or respond
2683 * with an appropriate error message (e.g., 413). A proxy or
2684 * gateway, when presented the same request, SHOULD either forward
2685 * the request inbound with the message- body or ignore the
2686 * message-body when determining a response.
2687 *
2688 * 2. If a Transfer-Encoding header field (Section 9.7) is present
2689 * and the "chunked" transfer-coding (Section 6.2) is used, the
2690 * transfer-length is defined by the use of this transfer-coding.
2691 * If a Transfer-Encoding header field is present and the "chunked"
2692 * transfer-coding is not present, the transfer-length is defined
2693 * by the sender closing the connection.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2694 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2695 * 3. If a Content-Length header field is present, its decimal value in
2696 * OCTETs represents both the entity-length and the transfer-length.
2697 * If a message is received with both a Transfer-Encoding header
2698 * field and a Content-Length header field, the latter MUST be ignored.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2699 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2700 * 4. By the server closing the connection. (Closing the connection
2701 * cannot be used to indicate the end of a request body, since that
2702 * would leave no possibility for the server to send back a response.)
2703 *
2704 * Whenever a transfer-coding is applied to a message-body, the set of
2705 * transfer-codings MUST include "chunked", unless the message indicates
2706 * it is terminated by closing the connection. When the "chunked"
2707 * transfer-coding is used, it MUST be the last transfer-coding applied
2708 * to the message-body.
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2709 */
2710
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2711 use_close_only = 0;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2712 ctx.idx = 0;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2713 /* set TE_CHNK and XFER_LEN only if "chunked" is seen last */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2714 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2715 http_find_header2("Transfer-Encoding", 17, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2716 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2717 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
2718 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2719 /* bad transfer-encoding (chunked followed by something else) */
2720 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2721 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2722 break;
2723 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2724 }
2725
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2726 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2727 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2728 http_find_header2("Content-Length", 14, req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2729 signed long long cl;
2730
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2731 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2732 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2733 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2734 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2735
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2736 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2737 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2738 goto return_bad_req; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2739 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2740
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2741 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2742 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2743 goto return_bad_req;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2744 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2745
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2746 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]2747 msg->err_pos = ctx.line + ctx.val - req->buf->p;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2748 goto return_bad_req; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]2749 }
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2750
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2751 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]2752 msg->body_len = msg->chunk_len = cl;
Willy Tarreau32b47f42009-10-18 20:55:02 +0200[diff] [blame]2753 }
2754
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2755 /* bodyless requests have a known length */
2756 if (!use_close_only)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]2757 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]2758
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2759 /* end of job, return OK */
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]2760 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2761 req->analyse_exp = TICK_ETERNITY;
2762 return 1;
2763
2764 return_bad_req:
2765 /* We centralize bad requests processing here */
2766 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
2767 /* we detected a parsing error. We want to archive this request
2768 * in the dedicated proxy area for later troubleshooting.
2769 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]2770 http_capture_bad_message(&s->fe->invalid_req, s, msg, msg->msg_state, s->fe);
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2771 }
2772
2773 txn->req.msg_state = HTTP_MSG_ERROR;
2774 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]2775 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2776
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]2777 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]2778 if (s->listener->counters)
2779 s->listener->counters->failed_req++;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]2780
2781 return_prx_cond:
2782 if (!(s->flags & SN_ERR_MASK))
2783 s->flags |= SN_ERR_PRXCOND;
2784 if (!(s->flags & SN_FINST_MASK))
2785 s->flags |= SN_FINST_R;
2786
2787 req->analysers = 0;
2788 req->analyse_exp = TICK_ETERNITY;
2789 return 0;
2790}
2791
Willy Tarreau4f8a83c2012-06-04 00:26:23 +0200[diff] [blame]2792
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2793/* This function prepares an applet to handle the stats. It can deal with the
2794 * "100-continue" expectation, check that admin rules are met for POST requests,
2795 * and program a response message if something was unexpected. It cannot fail
2796 * and always relies on the stats applet to complete the job. It does not touch
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2797 * analysers nor counters, which are left to the caller. It does not touch
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2798 * s->target which is supposed to already point to the stats applet. The caller
2799 * is expected to have already assigned an appctx to the session.
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2800 */
2801int http_handle_stats(struct session *s, struct channel *req)
2802{
2803 struct stats_admin_rule *stats_admin_rule;
2804 struct stream_interface *si = s->rep->prod;
2805 struct http_txn *txn = &s->txn;
2806 struct http_msg *msg = &txn->req;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2807 struct uri_auth *uri_auth = s->be->uri_auth;
2808 const char *uri, *h, *lookup;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2809 struct appctx *appctx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2810
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2811 appctx = si_appctx(si);
2812 memset(&appctx->ctx.stats, 0, sizeof(appctx->ctx.stats));
2813 appctx->st1 = appctx->st2 = 0;
2814 appctx->ctx.stats.st_code = STAT_STATUS_INIT;
2815 appctx->ctx.stats.flags |= STAT_FMT_HTML; /* assume HTML mode by default */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2816
2817 uri = msg->chn->buf->p + msg->sl.rq.u;
2818 lookup = uri + uri_auth->uri_len;
2819
2820 for (h = lookup; h <= uri + msg->sl.rq.u_l - 3; h++) {
2821 if (memcmp(h, ";up", 3) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2822 appctx->ctx.stats.flags |= STAT_HIDE_DOWN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2823 break;
2824 }
2825 }
2826
2827 if (uri_auth->refresh) {
2828 for (h = lookup; h <= uri + msg->sl.rq.u_l - 10; h++) {
2829 if (memcmp(h, ";norefresh", 10) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2830 appctx->ctx.stats.flags |= STAT_NO_REFRESH;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2831 break;
2832 }
2833 }
2834 }
2835
2836 for (h = lookup; h <= uri + msg->sl.rq.u_l - 4; h++) {
2837 if (memcmp(h, ";csv", 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2838 appctx->ctx.stats.flags &= ~STAT_FMT_HTML;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2839 break;
2840 }
2841 }
2842
2843 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
2844 if (memcmp(h, ";st=", 4) == 0) {
2845 int i;
2846 h += 4;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2847 appctx->ctx.stats.st_code = STAT_STATUS_UNKN;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2848 for (i = STAT_STATUS_INIT + 1; i < STAT_STATUS_SIZE; i++) {
2849 if (strncmp(stat_status_codes[i], h, 4) == 0) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2850 appctx->ctx.stats.st_code = i;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2851 break;
2852 }
2853 }
2854 break;
2855 }
2856 }
2857
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2858 appctx->ctx.stats.scope_str = 0;
2859 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2860 for (h = lookup; h <= uri + msg->sl.rq.u_l - 8; h++) {
2861 if (memcmp(h, STAT_SCOPE_INPUT_NAME "=", strlen(STAT_SCOPE_INPUT_NAME) + 1) == 0) {
2862 int itx = 0;
2863 const char *h2;
2864 char scope_txt[STAT_SCOPE_TXT_MAXLEN + 1];
2865 const char *err;
2866
2867 h += strlen(STAT_SCOPE_INPUT_NAME) + 1;
2868 h2 = h;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2869 appctx->ctx.stats.scope_str = h2 - msg->chn->buf->p;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2870 while (*h != ';' && *h != '\0' && *h != '&' && *h != ' ' && *h != '\n') {
2871 itx++;
2872 h++;
2873 }
2874
2875 if (itx > STAT_SCOPE_TXT_MAXLEN)
2876 itx = STAT_SCOPE_TXT_MAXLEN;
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2877 appctx->ctx.stats.scope_len = itx;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2878
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2879 /* 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]2880 memcpy(scope_txt, h2, itx);
2881 scope_txt[itx] = '\0';
2882 err = invalid_char(scope_txt);
2883 if (err) {
2884 /* bad char in search text => clear scope */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2885 appctx->ctx.stats.scope_str = 0;
2886 appctx->ctx.stats.scope_len = 0;
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2887 }
2888 break;
2889 }
2890 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2891
2892 /* now check whether we have some admin rules for this request */
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]2893 list_for_each_entry(stats_admin_rule, &uri_auth->admin_rules, list) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2894 int ret = 1;
2895
2896 if (stats_admin_rule->cond) {
2897 ret = acl_exec_cond(stats_admin_rule->cond, s->be, s, &s->txn, SMP_OPT_DIR_REQ|SMP_OPT_FINAL);
2898 ret = acl_pass(ret);
2899 if (stats_admin_rule->cond->pol == ACL_COND_UNLESS)
2900 ret = !ret;
2901 }
2902
2903 if (ret) {
2904 /* no rule, or the rule matches */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2905 appctx->ctx.stats.flags |= STAT_ADMIN;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2906 break;
2907 }
2908 }
2909
2910 /* Was the status page requested with a POST ? */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2911 if (unlikely(txn->meth == HTTP_METH_POST && txn->req.body_len > 0)) {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2912 if (appctx->ctx.stats.flags & STAT_ADMIN) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2913 if (msg->msg_state < HTTP_MSG_100_SENT) {
2914 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
2915 * send an HTTP/1.1 100 Continue intermediate response.
2916 */
2917 if (msg->flags & HTTP_MSGF_VER_11) {
2918 struct hdr_ctx ctx;
2919 ctx.idx = 0;
2920 /* Expect is allowed in 1.1, look for it */
2921 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
2922 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
2923 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
2924 }
2925 }
2926 msg->msg_state = HTTP_MSG_100_SENT;
2927 s->logs.tv_request = now; /* update the request timer to reflect full request */
2928 }
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2929 appctx->st0 = STAT_HTTP_POST;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2930 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2931 else {
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2932 appctx->ctx.stats.st_code = STAT_STATUS_DENY;
2933 appctx->st0 = STAT_HTTP_LAST;
de Lafond Guillaume88c278f2013-04-15 19:27:10 +0200[diff] [blame]2934 }
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2935 }
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]2936 else {
2937 /* So it was another method (GET/HEAD) */
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]2938 appctx->st0 = STAT_HTTP_HEAD;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2939 }
2940
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2941 s->task->nice = -32; /* small boost for HTTP statistics */
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]2942 return 1;
2943}
2944
Lukas Tribus67db8df2013-06-23 17:37:13 +0200[diff] [blame]2945/* Sets the TOS header in IPv4 and the traffic class header in IPv6 packets
2946 * (as per RFC3260 #4 and BCP37 #4.2 and #5.2).
2947 */
2948static inline void inet_set_tos(int fd, struct sockaddr_storage from, int tos)
2949{
2950#ifdef IP_TOS
2951 if (from.ss_family == AF_INET)
2952 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
2953#endif
2954#ifdef IPV6_TCLASS
2955 if (from.ss_family == AF_INET6) {
2956 if (IN6_IS_ADDR_V4MAPPED(&((struct sockaddr_in6 *)&from)->sin6_addr))
2957 /* v4-mapped addresses need IP_TOS */
2958 setsockopt(fd, IPPROTO_IP, IP_TOS, &tos, sizeof(tos));
2959 else
2960 setsockopt(fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof(tos));
2961 }
2962#endif
2963}
2964
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2965/* Executes the http-request rules <rules> for session <s>, proxy <px> and
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2966 * transaction <txn>. Returns the first rule that prevents further processing
2967 * of the request (auth, deny, ...) or NULL if it executed all rules or stopped
2968 * on an allow. It may set the TX_CLDENY on txn->flags if it encounters a deny
2969 * rule.
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2970 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2971static struct http_req_rule *
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2972http_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]2973{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]2974 struct connection *cli_conn;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2975 struct http_req_rule *rule;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2976 struct hdr_ctx ctx;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2977
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2978 list_for_each_entry(rule, rules, list) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2979 if (rule->action >= HTTP_REQ_ACT_MAX)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2980 continue;
2981
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2982 /* check optional condition */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2983 if (rule->cond) {
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2984 int ret;
2985
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]2986 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]2987 ret = acl_pass(ret);
2988
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]2989 if (rule->cond->pol == ACL_COND_UNLESS)
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2990 ret = !ret;
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2991
2992 if (!ret) /* condition not matched */
2993 continue;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]2994 }
2995
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]2996
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]2997 switch (rule->action) {
2998 case HTTP_REQ_ACT_ALLOW:
2999 return NULL; /* "allow" rules are OK */
3000
3001 case HTTP_REQ_ACT_DENY:
3002 txn->flags |= TX_CLDENY;
3003 return rule;
3004
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]3005 case HTTP_REQ_ACT_TARPIT:
3006 txn->flags |= TX_CLTARPIT;
3007 return rule;
3008
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3009 case HTTP_REQ_ACT_AUTH:
3010 return rule;
3011
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3012 case HTTP_REQ_ACT_REDIR:
3013 return rule;
3014
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3015 case HTTP_REQ_ACT_SET_NICE:
3016 s->task->nice = rule->arg.nice;
3017 break;
3018
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3019 case HTTP_REQ_ACT_SET_TOS:
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3020 if ((cli_conn = objt_conn(s->req->prod->end)) && (cli_conn->flags & CO_FL_CTRL_READY))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3021 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]3022 break;
3023
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3024 case HTTP_REQ_ACT_SET_MARK:
3025#ifdef SO_MARK
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3026 if ((cli_conn = objt_conn(s->req->prod->end)) && (cli_conn->flags & CO_FL_CTRL_READY))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3027 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]3028#endif
3029 break;
3030
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3031 case HTTP_REQ_ACT_SET_LOGL:
3032 s->logs.level = rule->arg.loglevel;
3033 break;
3034
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3035 case HTTP_REQ_ACT_SET_HDR:
3036 ctx.idx = 0;
3037 /* remove all occurrences of the header */
3038 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3039 txn->req.chn->buf->p, &txn->hdr_idx, &ctx)) {
3040 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3041 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3042 /* now fall through to header addition */
3043
3044 case HTTP_REQ_ACT_ADD_HDR:
3045 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3046 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3047 trash.len = rule->arg.hdr_add.name_len;
3048 trash.str[trash.len++] = ':';
3049 trash.str[trash.len++] = ' ';
3050 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3051 http_header_add_tail2(&txn->req, &txn->hdr_idx, trash.str, trash.len);
3052 break;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3053 }
3054 }
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3055
3056 /* we reached the end of the rules, nothing to report */
Willy Tarreau418c1a02012-12-25 20:52:58 +0100[diff] [blame]3057 return NULL;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3058}
3059
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3060
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3061/* Executes the http-response rules <rules> for session <s>, proxy <px> and
3062 * transaction <txn>. Returns the first rule that prevents further processing
3063 * of the response (deny, ...) or NULL if it executed all rules or stopped
3064 * on an allow. It may set the TX_SVDENY on txn->flags if it encounters a deny
3065 * rule.
3066 */
3067static struct http_res_rule *
3068http_res_get_intercept_rule(struct proxy *px, struct list *rules, struct session *s, struct http_txn *txn)
3069{
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3070 struct connection *cli_conn;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3071 struct http_res_rule *rule;
3072 struct hdr_ctx ctx;
3073
3074 list_for_each_entry(rule, rules, list) {
3075 if (rule->action >= HTTP_RES_ACT_MAX)
3076 continue;
3077
3078 /* check optional condition */
3079 if (rule->cond) {
3080 int ret;
3081
3082 ret = acl_exec_cond(rule->cond, px, s, txn, SMP_OPT_DIR_RES|SMP_OPT_FINAL);
3083 ret = acl_pass(ret);
3084
3085 if (rule->cond->pol == ACL_COND_UNLESS)
3086 ret = !ret;
3087
3088 if (!ret) /* condition not matched */
3089 continue;
3090 }
3091
3092
3093 switch (rule->action) {
3094 case HTTP_RES_ACT_ALLOW:
3095 return NULL; /* "allow" rules are OK */
3096
3097 case HTTP_RES_ACT_DENY:
3098 txn->flags |= TX_SVDENY;
3099 return rule;
3100
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]3101 case HTTP_RES_ACT_SET_NICE:
3102 s->task->nice = rule->arg.nice;
3103 break;
3104
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]3105 case HTTP_RES_ACT_SET_TOS:
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3106 if ((cli_conn = objt_conn(s->req->prod->end)) && (cli_conn->flags & CO_FL_CTRL_READY))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3107 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]3108 break;
3109
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]3110 case HTTP_RES_ACT_SET_MARK:
3111#ifdef SO_MARK
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3112 if ((cli_conn = objt_conn(s->req->prod->end)) && (cli_conn->flags & CO_FL_CTRL_READY))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3113 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]3114#endif
3115 break;
3116
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]3117 case HTTP_RES_ACT_SET_LOGL:
3118 s->logs.level = rule->arg.loglevel;
3119 break;
3120
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]3121 case HTTP_RES_ACT_SET_HDR:
3122 ctx.idx = 0;
3123 /* remove all occurrences of the header */
3124 while (http_find_header2(rule->arg.hdr_add.name, rule->arg.hdr_add.name_len,
3125 txn->rsp.chn->buf->p, &txn->hdr_idx, &ctx)) {
3126 http_remove_header2(&txn->rsp, &txn->hdr_idx, &ctx);
3127 }
3128 /* now fall through to header addition */
3129
3130 case HTTP_RES_ACT_ADD_HDR:
3131 chunk_printf(&trash, "%s: ", rule->arg.hdr_add.name);
3132 memcpy(trash.str, rule->arg.hdr_add.name, rule->arg.hdr_add.name_len);
3133 trash.len = rule->arg.hdr_add.name_len;
3134 trash.str[trash.len++] = ':';
3135 trash.str[trash.len++] = ' ';
3136 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->arg.hdr_add.fmt);
3137 http_header_add_tail2(&txn->rsp, &txn->hdr_idx, trash.str, trash.len);
3138 break;
3139 }
3140 }
3141
3142 /* we reached the end of the rules, nothing to report */
3143 return NULL;
3144}
3145
3146
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3147/* Perform an HTTP redirect based on the information in <rule>. The function
3148 * returns non-zero on success, or zero in case of a, irrecoverable error such
3149 * as too large a request to build a valid response.
3150 */
3151static int http_apply_redirect_rule(struct redirect_rule *rule, struct session *s, struct http_txn *txn)
3152{
3153 struct http_msg *msg = &txn->req;
3154 const char *msg_fmt;
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3155 const char *location;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3156
3157 /* build redirect message */
3158 switch(rule->code) {
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]3159 case 308:
3160 msg_fmt = HTTP_308;
3161 break;
3162 case 307:
3163 msg_fmt = HTTP_307;
3164 break;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3165 case 303:
3166 msg_fmt = HTTP_303;
3167 break;
3168 case 301:
3169 msg_fmt = HTTP_301;
3170 break;
3171 case 302:
3172 default:
3173 msg_fmt = HTTP_302;
3174 break;
3175 }
3176
3177 if (unlikely(!chunk_strcpy(&trash, msg_fmt)))
3178 return 0;
3179
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3180 location = trash.str + trash.len;
3181
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3182 switch(rule->type) {
3183 case REDIRECT_TYPE_SCHEME: {
3184 const char *path;
3185 const char *host;
3186 struct hdr_ctx ctx;
3187 int pathlen;
3188 int hostlen;
3189
3190 host = "";
3191 hostlen = 0;
3192 ctx.idx = 0;
3193 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
3194 host = ctx.line + ctx.val;
3195 hostlen = ctx.vlen;
3196 }
3197
3198 path = http_get_path(txn);
3199 /* build message using path */
3200 if (path) {
3201 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3202 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3203 int qs = 0;
3204 while (qs < pathlen) {
3205 if (path[qs] == '?') {
3206 pathlen = qs;
3207 break;
3208 }
3209 qs++;
3210 }
3211 }
3212 } else {
3213 path = "/";
3214 pathlen = 1;
3215 }
3216
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3217 if (rule->rdr_str) { /* this is an old "redirect" rule */
3218 /* check if we can add scheme + "://" + host + path */
3219 if (trash.len + rule->rdr_len + 3 + hostlen + pathlen > trash.size - 4)
3220 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3221
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3222 /* add scheme */
3223 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3224 trash.len += rule->rdr_len;
3225 }
3226 else {
3227 /* add scheme with executing log format */
3228 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]3229
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3230 /* check if we can add scheme + "://" + host + path */
3231 if (trash.len + 3 + hostlen + pathlen > trash.size - 4)
3232 return 0;
3233 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3234 /* add "://" */
3235 memcpy(trash.str + trash.len, "://", 3);
3236 trash.len += 3;
3237
3238 /* add host */
3239 memcpy(trash.str + trash.len, host, hostlen);
3240 trash.len += hostlen;
3241
3242 /* add path */
3243 memcpy(trash.str + trash.len, path, pathlen);
3244 trash.len += pathlen;
3245
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3246 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3247 if (trash.len && trash.str[trash.len - 1] != '/' &&
3248 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3249 if (trash.len > trash.size - 5)
3250 return 0;
3251 trash.str[trash.len] = '/';
3252 trash.len++;
3253 }
3254
3255 break;
3256 }
3257 case REDIRECT_TYPE_PREFIX: {
3258 const char *path;
3259 int pathlen;
3260
3261 path = http_get_path(txn);
3262 /* build message using path */
3263 if (path) {
3264 pathlen = txn->req.sl.rq.u_l + (txn->req.chn->buf->p + txn->req.sl.rq.u) - path;
3265 if (rule->flags & REDIRECT_FLAG_DROP_QS) {
3266 int qs = 0;
3267 while (qs < pathlen) {
3268 if (path[qs] == '?') {
3269 pathlen = qs;
3270 break;
3271 }
3272 qs++;
3273 }
3274 }
3275 } else {
3276 path = "/";
3277 pathlen = 1;
3278 }
3279
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3280 if (rule->rdr_str) { /* this is an old "redirect" rule */
3281 if (trash.len + rule->rdr_len + pathlen > trash.size - 4)
3282 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3283
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3284 /* add prefix. Note that if prefix == "/", we don't want to
3285 * add anything, otherwise it makes it hard for the user to
3286 * configure a self-redirection.
3287 */
3288 if (rule->rdr_len != 1 || *rule->rdr_str != '/') {
3289 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3290 trash.len += rule->rdr_len;
3291 }
3292 }
3293 else {
3294 /* add prefix with executing log format */
3295 trash.len += build_logline(s, trash.str + trash.len, trash.size - trash.len, &rule->rdr_fmt);
3296
3297 /* Check length */
3298 if (trash.len + pathlen > trash.size - 4)
3299 return 0;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3300 }
3301
3302 /* add path */
3303 memcpy(trash.str + trash.len, path, pathlen);
3304 trash.len += pathlen;
3305
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3306 /* append a slash at the end of the location if needed and missing */
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3307 if (trash.len && trash.str[trash.len - 1] != '/' &&
3308 (rule->flags & REDIRECT_FLAG_APPEND_SLASH)) {
3309 if (trash.len > trash.size - 5)
3310 return 0;
3311 trash.str[trash.len] = '/';
3312 trash.len++;
3313 }
3314
3315 break;
3316 }
3317 case REDIRECT_TYPE_LOCATION:
3318 default:
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3319 if (rule->rdr_str) { /* this is an old "redirect" rule */
3320 if (trash.len + rule->rdr_len > trash.size - 4)
3321 return 0;
3322
3323 /* add location */
3324 memcpy(trash.str + trash.len, rule->rdr_str, rule->rdr_len);
3325 trash.len += rule->rdr_len;
3326 }
3327 else {
3328 /* add location with executing log format */
3329 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]3330
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3331 /* Check left length */
3332 if (trash.len > trash.size - 4)
3333 return 0;
3334 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3335 break;
3336 }
3337
3338 if (rule->cookie_len) {
3339 memcpy(trash.str + trash.len, "\r\nSet-Cookie: ", 14);
3340 trash.len += 14;
3341 memcpy(trash.str + trash.len, rule->cookie_str, rule->cookie_len);
3342 trash.len += rule->cookie_len;
3343 memcpy(trash.str + trash.len, "\r\n", 2);
3344 trash.len += 2;
3345 }
3346
3347 /* add end of headers and the keep-alive/close status.
3348 * We may choose to set keep-alive if the Location begins
3349 * with a slash, because the client will come back to the
3350 * same server.
3351 */
3352 txn->status = rule->code;
3353 /* let's log the request time */
3354 s->logs.tv_request = now;
3355
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]3356 if (*location == '/' &&
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3357 (msg->flags & HTTP_MSGF_XFER_LEN) &&
3358 !(msg->flags & HTTP_MSGF_TE_CHNK) && !txn->req.body_len &&
3359 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL ||
3360 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL)) {
3361 /* keep-alive possible */
3362 if (!(msg->flags & HTTP_MSGF_VER_11)) {
3363 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3364 memcpy(trash.str + trash.len, "\r\nProxy-Connection: keep-alive", 30);
3365 trash.len += 30;
3366 } else {
3367 memcpy(trash.str + trash.len, "\r\nConnection: keep-alive", 24);
3368 trash.len += 24;
3369 }
3370 }
3371 memcpy(trash.str + trash.len, "\r\n\r\n", 4);
3372 trash.len += 4;
3373 bo_inject(txn->rsp.chn, trash.str, trash.len);
3374 /* "eat" the request */
3375 bi_fast_delete(txn->req.chn->buf, msg->sov);
3376 msg->sov = 0;
3377 txn->req.chn->analysers = AN_REQ_HTTP_XFER_BODY;
3378 s->rep->analysers = AN_RES_HTTP_XFER_BODY;
3379 txn->req.msg_state = HTTP_MSG_CLOSED;
3380 txn->rsp.msg_state = HTTP_MSG_DONE;
3381 } else {
3382 /* keep-alive not possible */
3383 if (unlikely(txn->flags & TX_USE_PX_CONN)) {
3384 memcpy(trash.str + trash.len, "\r\nProxy-Connection: close\r\n\r\n", 29);
3385 trash.len += 29;
3386 } else {
3387 memcpy(trash.str + trash.len, "\r\nConnection: close\r\n\r\n", 23);
3388 trash.len += 23;
3389 }
3390 stream_int_retnclose(txn->req.chn->prod, &trash);
3391 txn->req.chn->analysers = 0;
3392 }
3393
3394 if (!(s->flags & SN_ERR_MASK))
Willy Tarreau570f2212013-06-10 16:42:09 +0200[diff] [blame]3395 s->flags |= SN_ERR_LOCAL;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3396 if (!(s->flags & SN_FINST_MASK))
3397 s->flags |= SN_FINST_R;
3398
3399 return 1;
3400}
3401
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3402/* This stream analyser runs all HTTP request processing which is common to
3403 * frontends and backends, which means blocking ACLs, filters, connection-close,
3404 * reqadd, stats and redirects. This is performed for the designated proxy.
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3405 * 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]3406 * either needs more data or wants to immediately abort the request (eg: deny,
3407 * error, ...).
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3408 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3409int 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]3410{
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3411 struct http_txn *txn = &s->txn;
3412 struct http_msg *msg = &txn->req;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3413 struct acl_cond *cond;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3414 struct http_req_rule *http_req_last_rule = NULL;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3415 struct redirect_rule *rule;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]3416 struct cond_wordlist *wl;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3417
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3418 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3419 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3420 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3421 return 0;
3422 }
3423
Willy Tarreau3a816292009-07-07 10:55:49 +0200[diff] [blame]3424 req->analysers &= ~an_bit;
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3425 req->analyse_exp = TICK_ETERNITY;
3426
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3427 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]3428 now_ms, __FUNCTION__,
3429 s,
3430 req,
3431 req->rex, req->wex,
3432 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3433 req->buf->i,
Willy Tarreaud787e662009-07-07 10:14:51 +0200[diff] [blame]3434 req->analysers);
3435
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3436 /* first check whether we have some ACLs set to block this request */
3437 list_for_each_entry(cond, &px->block_cond, list) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3438 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]3439
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3440 ret = acl_pass(ret);
3441 if (cond->pol == ACL_COND_UNLESS)
3442 ret = !ret;
Willy Tarreau53b6c742006-12-17 13:37:46 +0100[diff] [blame]3443
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3444 if (ret) {
3445 txn->status = 403;
3446 /* let's log the request time */
3447 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3448 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3449 session_inc_http_err_ctr(s);
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3450 goto return_prx_cond;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3451 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3452 }
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3453
Willy Tarreau5d5b5d82012-12-09 12:00:04 +0100[diff] [blame]3454 /* just in case we have some per-backend tracking */
3455 session_inc_be_http_req_ctr(s);
3456
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3457 /* evaluate http-request rules */
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3458 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]3459
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3460 /* evaluate stats http-request rules only if http-request is OK */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]3461 if (!http_req_last_rule) {
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3462 if (stats_check_uri(s->rep->prod, txn, px)) {
3463 s->target = &http_stats_applet.obj_type;
Willy Tarreau1fbe1c92013-12-01 09:35:41 +0100[diff] [blame]3464 if (unlikely(!stream_int_register_handler(s->rep->prod, objt_applet(s->target)))) {
3465 txn->status = 500;
3466 s->logs.tv_request = now;
3467 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau7b4b4992013-12-01 09:15:12 +0100[diff] [blame]3468
Willy Tarreau1fbe1c92013-12-01 09:35:41 +0100[diff] [blame]3469 if (!(s->flags & SN_ERR_MASK))
3470 s->flags |= SN_ERR_RESOURCE;
3471 goto return_prx_cond;
3472 }
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3473 /* parse the whole stats request and extract the relevant information */
3474 http_handle_stats(s, req);
Willy Tarreau96257ec2012-12-27 10:46:37 +0100[diff] [blame]3475 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]3476 }
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3477 }
3478
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3479 /* only apply req{,i}{rep/deny/tarpit} if the request was not yet
3480 * blocked by an http-request rule.
3481 */
3482 if (!(txn->flags & (TX_CLDENY|TX_CLTARPIT)) && (px->req_exp != NULL)) {
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]3483 if (apply_filters_to_request(s, req, px) < 0)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3484 goto return_bad_req;
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3485 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3486
Willy Tarreau3b44e722013-11-16 10:28:23 +0100[diff] [blame]3487 /* return a 403 if either rule has blocked */
3488 if (txn->flags & (TX_CLDENY|TX_CLTARPIT)) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3489 if (txn->flags & TX_CLDENY) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3490 txn->status = 403;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3491 s->logs.tv_request = now;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3492 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_403));
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3493 session_inc_http_err_ctr(s);
Willy Tarreau687ba132013-11-16 10:13:35 +0100[diff] [blame]3494 s->fe->fe_counters.denied_req++;
3495 if (s->fe != s->be)
3496 s->be->be_counters.denied_req++;
3497 if (s->listener->counters)
3498 s->listener->counters->denied_req++;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3499 goto return_prx_cond;
3500 }
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3501
3502 /* When a connection is tarpitted, we use the tarpit timeout,
3503 * which may be the same as the connect timeout if unspecified.
3504 * If unset, then set it to zero because we really want it to
3505 * eventually expire. We build the tarpit as an analyser.
3506 */
3507 if (txn->flags & TX_CLTARPIT) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3508 channel_erase(s->req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3509 /* wipe the request out so that we can drop the connection early
3510 * if the client closes first.
3511 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3512 channel_dont_connect(req);
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3513 req->analysers = 0; /* remove switching rules etc... */
3514 req->analysers |= AN_REQ_HTTP_TARPIT;
3515 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.tarpit);
3516 if (!req->analyse_exp)
3517 req->analyse_exp = tick_add(now_ms, 0);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3518 session_inc_http_err_ctr(s);
Willy Tarreau687ba132013-11-16 10:13:35 +0100[diff] [blame]3519 s->fe->fe_counters.denied_req++;
3520 if (s->fe != s->be)
3521 s->be->be_counters.denied_req++;
3522 if (s->listener->counters)
3523 s->listener->counters->denied_req++;
Willy Tarreauc465fd72009-08-31 00:17:18 +0200[diff] [blame]3524 return 1;
3525 }
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3526 }
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3527
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3528 /* Until set to anything else, the connection mode is set as TUNNEL. It will
3529 * only change if both the request and the config reference something else.
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3530 * Option httpclose by itself does not set a mode, it remains a tunnel mode
3531 * in which headers are mangled. However, if another mode is set, it will
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3532 * affect it (eg: server-close/keep-alive + httpclose = close). Note that we
3533 * avoid to redo the same work if FE and BE have the same settings (common).
3534 * The method consists in checking if options changed between the two calls
3535 * (implying that either one is non-null, or one of them is non-null and we
3536 * are there for the first time.
Willy Tarreau42736642009-10-18 21:04:35 +0200[diff] [blame]3537 */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3538
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]3539 if ((!(txn->flags & TX_HDR_CONN_PRS) &&
3540 (s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO))) ||
3541 ((s->fe->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)) !=
3542 (s->be->options & (PR_O_KEEPALIVE|PR_O_SERVER_CLO|PR_O_HTTP_CLOSE|PR_O_FORCE_CLO)))) {
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3543 int tmp = TX_CON_WANT_TUN;
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3544
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3545 if ((s->fe->options|s->be->options) & PR_O_KEEPALIVE ||
3546 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3547 tmp = TX_CON_WANT_KAL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]3548 if ((s->fe->options|s->be->options) & PR_O_SERVER_CLO)
3549 tmp = TX_CON_WANT_SCL;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3550 if ((s->fe->options|s->be->options) & PR_O_FORCE_CLO)
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3551 tmp = TX_CON_WANT_CLO;
3552
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3553 if ((txn->flags & TX_CON_WANT_MSK) < tmp)
3554 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | tmp;
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3555
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3556 if (!(txn->flags & TX_HDR_CONN_PRS)) {
3557 /* parse the Connection header and possibly clean it */
3558 int to_del = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3559 if ((msg->flags & HTTP_MSGF_VER_11) ||
Willy Tarreau8a8e1d92010-04-05 16:15:16 +0200[diff] [blame]3560 ((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL &&
3561 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA)))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3562 to_del |= 2; /* remove "keep-alive" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3563 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3564 to_del |= 1; /* remove "close" */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3565 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau0dfdf192010-01-05 11:33:11 +0100[diff] [blame]3566 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]3567
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3568 /* check if client or config asks for explicit close in KAL/SCL */
3569 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
3570 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) &&
3571 ((txn->flags & TX_HDR_CONN_CLO) || /* "connection: close" */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3572 (!(msg->flags & HTTP_MSGF_VER_11) && !(txn->flags & TX_HDR_CONN_KAL)) || /* no "connection: k-a" in 1.0 */
Cyril Bonté9ea2b9a2010-12-29 09:36:56 +0100[diff] [blame]3573 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE) || /* httpclose+any = forceclose */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3574 !(msg->flags & HTTP_MSGF_XFER_LEN) || /* no length known => close */
Willy Tarreauc3e8b252010-01-28 15:01:20 +0100[diff] [blame]3575 s->fe->state == PR_STSTOPPED)) /* frontend is stopping */
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3576 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
3577 }
Willy Tarreau78599912009-10-17 20:12:21 +0200[diff] [blame]3578
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3579 /* we can be blocked here because the request needs to be authenticated,
3580 * either to pass or to access stats.
3581 */
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]3582 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_AUTH) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]3583 char *realm = http_req_last_rule->arg.auth.realm;
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3584
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3585 if (!realm)
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3586 realm = (objt_applet(s->target) == &http_stats_applet) ? STATS_DEFAULT_REALM : px->id;
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]3587
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3588 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]3589 txn->status = 401;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3590 stream_int_retnclose(req->prod, &trash);
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]3591 /* on 401 we still count one error, because normal browsing
3592 * won't significantly increase the counter but brute force
3593 * attempts will.
3594 */
3595 session_inc_http_err_ctr(s);
Krzysztof Piotr Oledzki59bb2182010-01-29 17:58:21 +0100[diff] [blame]3596 goto return_prx_cond;
3597 }
3598
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3599 /* add request headers from the rule sets in the same order */
3600 list_for_each_entry(wl, &px->req_add, list) {
3601 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3602 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]3603 ret = acl_pass(ret);
3604 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
3605 ret = !ret;
3606 if (!ret)
3607 continue;
3608 }
3609
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3610 if (unlikely(http_header_add_tail(&txn->req, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3611 goto return_bad_req;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]3612 }
3613
3614 if (http_req_last_rule && http_req_last_rule->action == HTTP_REQ_ACT_REDIR) {
3615 if (!http_apply_redirect_rule(http_req_last_rule->arg.redir, s, txn))
3616 goto return_bad_req;
3617 req->analyse_exp = TICK_ETERNITY;
3618 return 1;
Willy Tarreauf68a15a2011-01-06 16:53:21 +0100[diff] [blame]3619 }
3620
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]3621 if (unlikely(objt_applet(s->target) == &http_stats_applet)) {
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3622 /* process the stats request now */
Willy Tarreau347a35d2013-11-22 17:51:09 +0100[diff] [blame]3623 if (s->fe == s->be) /* report it if the request was intercepted by the frontend */
3624 s->fe->fe_counters.intercepted_req++;
3625
3626 if (!(s->flags & SN_ERR_MASK)) // this is not really an error but it is
3627 s->flags |= SN_ERR_LOCAL; // to mark that it comes from the proxy
3628 if (!(s->flags & SN_FINST_MASK))
3629 s->flags |= SN_FINST_R;
3630
3631 req->analyse_exp = TICK_ETERNITY;
3632 req->analysers = 0;
Willy Tarreau1facd6d2012-12-22 22:03:39 +0100[diff] [blame]3633 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3634 }
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]3635
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3636 /* check whether we have some ACLs set to redirect this request */
3637 list_for_each_entry(rule, &px->redirect_rules, list) {
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3638 if (rule->cond) {
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3639 int ret;
3640
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]3641 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]3642 ret = acl_pass(ret);
3643 if (rule->cond->pol == ACL_COND_UNLESS)
3644 ret = !ret;
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3645 if (!ret)
3646 continue;
Willy Tarreauf285f542010-01-03 20:03:03 +0100[diff] [blame]3647 }
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3648 if (!http_apply_redirect_rule(rule, s, txn))
3649 goto return_bad_req;
Willy Tarreaua9679ac2010-01-03 17:32:57 +0100[diff] [blame]3650
Willy Tarreau71241ab2012-12-27 11:30:54 +0100[diff] [blame]3651 req->analyse_exp = TICK_ETERNITY;
3652 return 1;
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3653 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3654
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3655 /* POST requests may be accompanied with an "Expect: 100-Continue" header.
3656 * If this happens, then the data will not come immediately, so we must
3657 * send all what we have without waiting. Note that due to the small gain
3658 * 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]3659 * 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]3660 * itself once used.
3661 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]3662 req->flags |= CF_SEND_DONTWAIT;
Willy Tarreau2be39392010-01-03 17:24:51 +0100[diff] [blame]3663
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3664 /* that's OK for us now, let's move on to next analysers */
3665 return 1;
Willy Tarreau11382812008-07-09 16:18:21 +0200[diff] [blame]3666
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3667 return_bad_req:
3668 /* We centralize bad requests processing here */
3669 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
3670 /* we detected a parsing error. We want to archive this request
3671 * in the dedicated proxy area for later troubleshooting.
3672 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3673 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]3674 }
Willy Tarreau55ea7572007-06-17 19:56:27 +0200[diff] [blame]3675
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3676 txn->req.msg_state = HTTP_MSG_ERROR;
3677 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3678 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3679
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3680 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3681 if (s->listener->counters)
3682 s->listener->counters->failed_req++;
Willy Tarreau6e4261e2007-09-18 18:36:05 +0200[diff] [blame]3683
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3684 return_prx_cond:
3685 if (!(s->flags & SN_ERR_MASK))
3686 s->flags |= SN_ERR_PRXCOND;
3687 if (!(s->flags & SN_FINST_MASK))
3688 s->flags |= SN_FINST_R;
Willy Tarreauf1221aa2006-12-17 22:14:12 +0100[diff] [blame]3689
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3690 req->analysers = 0;
3691 req->analyse_exp = TICK_ETERNITY;
3692 return 0;
3693}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3694
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3695/* This function performs all the processing enabled for the current request.
3696 * It returns 1 if the processing can continue on next analysers, or zero if it
3697 * needs more data, encounters an error, or wants to immediately abort the
3698 * request. It relies on buffers flags, and updates s->req->analysers.
3699 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]3700int http_process_request(struct session *s, struct channel *req, int an_bit)
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3701{
3702 struct http_txn *txn = &s->txn;
3703 struct http_msg *msg = &txn->req;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3704 struct connection *cli_conn = objt_conn(req->prod->end);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3705
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]3706 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3707 /* we need more data */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3708 channel_dont_connect(req);
Willy Tarreau51aecc72009-07-12 09:47:04 +0200[diff] [blame]3709 return 0;
3710 }
3711
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]3712 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]3713 now_ms, __FUNCTION__,
3714 s,
3715 req,
3716 req->rex, req->wex,
3717 req->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3718 req->buf->i,
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]3719 req->analysers);
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3720
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]3721 if (s->fe->comp || s->be->comp)
3722 select_compression_request_header(s, req->buf);
3723
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3724 /*
3725 * Right now, we know that we have processed the entire headers
3726 * and that unwanted requests have been filtered out. We can do
3727 * whatever we want with the remaining request. Also, now we
3728 * may have separate values for ->fe, ->be.
3729 */
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3730
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3731 /*
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3732 * If HTTP PROXY is set we simply get remote server address parsing
3733 * incoming request. Note that this requires that a connection is
3734 * allocated on the server side.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3735 */
3736 if ((s->be->options & PR_O_HTTP_PROXY) && !(s->flags & SN_ADDR_SET)) {
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]3737 struct connection *conn;
3738
3739 if (unlikely((conn = si_alloc_conn(req->cons)) == NULL)) {
3740 txn->req.msg_state = HTTP_MSG_ERROR;
3741 txn->status = 500;
3742 req->analysers = 0;
3743 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
3744
3745 if (!(s->flags & SN_ERR_MASK))
3746 s->flags |= SN_ERR_RESOURCE;
3747 if (!(s->flags & SN_FINST_MASK))
3748 s->flags |= SN_FINST_R;
3749
3750 return 0;
3751 }
3752 url2sa(req->buf->p + msg->sl.rq.u, msg->sl.rq.u_l, &conn->addr.to);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3753 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]3754
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3755 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3756 * 7: Now we can work with the cookies.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3757 * Note that doing so might move headers in the request, but
3758 * the fields will stay coherent and the URI will not move.
3759 * This should only be performed in the backend.
3760 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]3761 if ((s->be->cookie_name || s->be->appsession_name || s->fe->capture_name)
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3762 && !(txn->flags & (TX_CLDENY|TX_CLTARPIT)))
3763 manage_client_side_cookies(s, req);
Willy Tarreau7ac51f62007-03-25 16:00:04 +0200[diff] [blame]3764
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3765 /*
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3766 * 8: the appsession cookie was looked up very early in 1.2,
3767 * so let's do the same now.
3768 */
3769
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]3770 /* It needs to look into the URI unless persistence must be ignored */
3771 if ((txn->sessid == NULL) && s->be->appsession_name && !(s->flags & SN_IGNORE_PRST)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3772 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]3773 }
3774
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3775 /* add unique-id if "header-unique-id" is specified */
3776
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]3777 if (!LIST_ISEMPTY(&s->fe->format_unique_id)) {
3778 if ((s->unique_id = pool_alloc2(pool2_uniqueid)) == NULL)
3779 goto return_bad_req;
3780 s->unique_id[0] = '\0';
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3781 build_logline(s, s->unique_id, UNIQUEID_LEN, &s->fe->format_unique_id);
William Lallemand5b7ea3a2013-08-28 15:44:19 +0200[diff] [blame]3782 }
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3783
3784 if (s->fe->header_unique_id && s->unique_id) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3785 chunk_printf(&trash, "%s: %s", s->fe->header_unique_id, s->unique_id);
3786 if (trash.len < 0)
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]3787 goto return_bad_req;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3788 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]3789 goto return_bad_req;
3790 }
3791
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]3792 /*
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3793 * 9: add X-Forwarded-For if either the frontend or the backend
3794 * asks for it.
3795 */
3796 if ((s->fe->options | s->be->options) & PR_O_FWDFOR) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3797 struct hdr_ctx ctx = { .idx = 0 };
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3798 if (!((s->fe->options | s->be->options) & PR_O_FF_ALWAYS) &&
Cyril Bontéa32d2752012-05-29 23:27:41 +0200[diff] [blame]3799 http_find_header2(s->be->fwdfor_hdr_len ? s->be->fwdfor_hdr_name : s->fe->fwdfor_hdr_name,
3800 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]3801 req->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreau87cf5142011-08-19 22:57:24 +0200[diff] [blame]3802 /* The header is set to be added only if none is present
3803 * and we found it, so don't do anything.
3804 */
3805 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3806 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3807 /* Add an X-Forwarded-For header unless the source IP is
3808 * in the 'except' network range.
3809 */
3810 if ((!s->fe->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3811 (((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]3812 != s->fe->except_net.s_addr) &&
3813 (!s->be->except_mask.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3814 (((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]3815 != s->be->except_net.s_addr)) {
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3816 int len;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3817 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3818 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.from)->sin_addr;
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3819
3820 /* Note: we rely on the backend to get the header name to be used for
3821 * x-forwarded-for, because the header is really meant for the backends.
3822 * However, if the backend did not specify any option, we have to rely
3823 * on the frontend's header name.
3824 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3825 if (s->be->fwdfor_hdr_len) {
3826 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3827 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Ross Westaf72a1d2008-08-03 10:51:45 +0200[diff] [blame]3828 } else {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3829 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3830 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3831 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3832 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]3833
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3834 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]3835 goto return_bad_req;
Willy Tarreau2a324282006-12-05 00:05:46 +0100[diff] [blame]3836 }
3837 }
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3838 else if (cli_conn && cli_conn->addr.from.ss_family == AF_INET6) {
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3839 /* FIXME: for the sake of completeness, we should also support
3840 * 'except' here, although it is mostly useless in this case.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3841 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3842 int len;
3843 char pn[INET6_ADDRSTRLEN];
3844 inet_ntop(AF_INET6,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3845 (const void *)&((struct sockaddr_in6 *)(&cli_conn->addr.from))->sin6_addr,
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3846 pn, sizeof(pn));
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3847
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3848 /* Note: we rely on the backend to get the header name to be used for
3849 * x-forwarded-for, because the header is really meant for the backends.
3850 * However, if the backend did not specify any option, we have to rely
3851 * on the frontend's header name.
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3852 */
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3853 if (s->be->fwdfor_hdr_len) {
3854 len = s->be->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3855 memcpy(trash.str, s->be->fwdfor_hdr_name, len);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3856 } else {
3857 len = s->fe->fwdfor_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3858 memcpy(trash.str, s->fe->fwdfor_hdr_name, len);
matt.farnsworth@nokia.com1c2ab962008-04-14 20:47:37 +0200[diff] [blame]3859 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3860 len += sprintf(trash.str + len, ": %s", pn);
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3861
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3862 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]3863 goto return_bad_req;
3864 }
3865 }
3866
3867 /*
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3868 * 10: add X-Original-To if either the frontend or the backend
3869 * asks for it.
3870 */
3871 if ((s->fe->options | s->be->options) & PR_O_ORGTO) {
3872
3873 /* FIXME: don't know if IPv6 can handle that case too. */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3874 if (cli_conn && cli_conn->addr.from.ss_family == AF_INET) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3875 /* Add an X-Original-To header unless the destination IP is
3876 * in the 'except' network range.
3877 */
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3878 conn_get_to_addr(cli_conn);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3879
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3880 if (cli_conn->addr.to.ss_family == AF_INET &&
Emeric Brun5bd86a82010-10-22 17:23:04 +0200[diff] [blame]3881 ((!s->fe->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3882 (((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]3883 != s->fe->except_to.s_addr) &&
3884 (!s->be->except_mask_to.s_addr ||
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3885 (((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]3886 != s->be->except_to.s_addr))) {
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3887 int len;
3888 unsigned char *pn;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3889 pn = (unsigned char *)&((struct sockaddr_in *)&cli_conn->addr.to)->sin_addr;
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3890
3891 /* Note: we rely on the backend to get the header name to be used for
3892 * x-original-to, because the header is really meant for the backends.
3893 * However, if the backend did not specify any option, we have to rely
3894 * on the frontend's header name.
3895 */
3896 if (s->be->orgto_hdr_len) {
3897 len = s->be->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3898 memcpy(trash.str, s->be->orgto_hdr_name, len);
Maik Broemme2850cb42009-04-17 18:53:21 +0200[diff] [blame]3899 } else {
3900 len = s->fe->orgto_hdr_len;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3901 memcpy(trash.str, s->fe->orgto_hdr_name, len);
Willy Tarreaub86db342009-11-30 11:50:16 +0100[diff] [blame]3902 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3903 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]3904
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]3905 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]3906 goto return_bad_req;
3907 }
3908 }
3909 }
3910
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]3911 /* 11: add "Connection: close" or "Connection: keep-alive" if needed and not yet set.
3912 * If an "Upgrade" token is found, the header is left untouched in order not to have
3913 * to deal with some servers bugs : some of them fail an Upgrade if anything but
3914 * "Upgrade" is present in the Connection header.
3915 */
3916 if (!(txn->flags & TX_HDR_CONN_UPG) &&
3917 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
3918 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3919 unsigned int want_flags = 0;
3920
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3921 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3922 if (((txn->flags & TX_CON_WANT_MSK) >= TX_CON_WANT_SCL ||
3923 ((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) &&
3924 !((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3925 want_flags |= TX_CON_CLO_SET;
3926 } else {
Willy Tarreau22a95342010-09-29 14:31:41 +0200[diff] [blame]3927 if (((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL &&
3928 !((s->fe->options|s->be->options) & PR_O_HTTP_CLOSE)) ||
3929 ((s->fe->options2|s->be->options2) & PR_O2_FAKE_KA))
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3930 want_flags |= TX_CON_KAL_SET;
3931 }
3932
3933 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]3934 http_change_connection_header(txn, msg, want_flags);
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3935 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3936
Willy Tarreaubbf0b372010-01-18 16:54:40 +0100[diff] [blame]3937
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3938 /* If we have no server assigned yet and we're balancing on url_param
3939 * with a POST request, we may be interested in checking the body for
3940 * that parameter. This will be done in another analyser.
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3941 */
3942 if (!(s->flags & (SN_ASSIGNED|SN_DIRECT)) &&
3943 s->txn.meth == HTTP_METH_POST && s->be->url_param_name != NULL &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3944 s->be->url_param_post_limit != 0 &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3945 (msg->flags & (HTTP_MSGF_CNT_LEN|HTTP_MSGF_TE_CHNK))) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]3946 channel_dont_connect(req);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3947 req->analysers |= AN_REQ_HTTP_BODY;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3948 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3949
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3950 if (msg->flags & HTTP_MSGF_XFER_LEN) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]3951 req->analysers |= AN_REQ_HTTP_XFER_BODY;
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3952#ifdef TCP_QUICKACK
3953 /* We expect some data from the client. Unless we know for sure
3954 * we already have a full request, we have to re-enable quick-ack
3955 * in case we previously disabled it, otherwise we might cause
3956 * the client to delay further data.
3957 */
3958 if ((s->listener->options & LI_O_NOQUICKACK) &&
Willy Tarreauf79c8172013-10-21 16:30:56 +0200[diff] [blame]3959 cli_conn && (cli_conn->flags & CO_FL_CTRL_READY) &&
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]3960 ((msg->flags & HTTP_MSGF_TE_CHNK) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]3961 (msg->body_len > req->buf->i - txn->req.eoh - 2)))
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]3962 setsockopt(cli_conn->t.sock.fd, IPPROTO_TCP, TCP_QUICKACK, &one, sizeof(one));
Willy Tarreau5e205522011-12-17 16:34:27 +0100[diff] [blame]3963#endif
3964 }
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]3965
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3966 /*************************************************************
3967 * OK, that's finished for the headers. We have done what we *
3968 * could. Let's switch to the DATA state. *
3969 ************************************************************/
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]3970 req->analyse_exp = TICK_ETERNITY;
3971 req->analysers &= ~an_bit;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]3972
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3973 /* if the server closes the connection, we want to immediately react
3974 * and close the socket to save packets and syscalls.
3975 */
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]3976 if (!(req->analysers & AN_REQ_HTTP_XFER_BODY))
3977 req->cons->flags |= SI_FL_NOHALF;
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]3978
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3979 s->logs.tv_request = now;
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3980 /* OK let's go on with the BODY now */
3981 return 1;
Willy Tarreau06619262006-12-17 08:37:22 +0100[diff] [blame]3982
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3983 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3984 if (unlikely(msg->msg_state == HTTP_MSG_ERROR) || msg->err_pos >= 0) {
Willy Tarreauf073a832009-03-01 23:21:47 +0100[diff] [blame]3985 /* we detected a parsing error. We want to archive this request
3986 * in the dedicated proxy area for later troubleshooting.
3987 */
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]3988 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]3989 }
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]3990
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]3991 txn->req.msg_state = HTTP_MSG_ERROR;
3992 txn->status = 400;
3993 req->analysers = 0;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]3994 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3995
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]3996 s->fe->fe_counters.failed_req++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]3997 if (s->listener->counters)
3998 s->listener->counters->failed_req++;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]3999
Willy Tarreau59234e92008-11-30 23:51:27 +0100[diff] [blame]4000 if (!(s->flags & SN_ERR_MASK))
4001 s->flags |= SN_ERR_PRXCOND;
4002 if (!(s->flags & SN_FINST_MASK))
4003 s->flags |= SN_FINST_R;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]4004 return 0;
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4005}
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4006
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4007/* This function is an analyser which processes the HTTP tarpit. It always
4008 * returns zero, at the beginning because it prevents any other processing
4009 * from occurring, and at the end because it terminates the request.
4010 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4011int http_process_tarpit(struct session *s, struct channel *req, int an_bit)
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4012{
4013 struct http_txn *txn = &s->txn;
4014
4015 /* This connection is being tarpitted. The CLIENT side has
4016 * already set the connect expiration date to the right
4017 * timeout. We just have to check that the client is still
4018 * there and that the timeout has not expired.
4019 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4020 channel_dont_connect(req);
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4021 if ((req->flags & (CF_SHUTR|CF_READ_ERROR)) == 0 &&
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4022 !tick_is_expired(req->analyse_exp, now_ms))
4023 return 0;
4024
4025 /* We will set the queue timer to the time spent, just for
4026 * logging purposes. We fake a 500 server error, so that the
4027 * attacker will not suspect his connection has been tarpitted.
4028 * It will not cause trouble to the logs because we can exclude
4029 * the tarpitted connections by filtering on the 'PT' status flags.
4030 */
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4031 s->logs.t_queue = tv_ms_elapsed(&s->logs.tv_accept, &now);
4032
4033 txn->status = 500;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4034 if (!(req->flags & CF_READ_ERROR))
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4035 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_500));
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4036
4037 req->analysers = 0;
4038 req->analyse_exp = TICK_ETERNITY;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]4039
Willy Tarreau60b85b02008-11-30 23:28:40 +0100[diff] [blame]4040 if (!(s->flags & SN_ERR_MASK))
4041 s->flags |= SN_ERR_PRXCOND;
4042 if (!(s->flags & SN_FINST_MASK))
4043 s->flags |= SN_FINST_T;
4044 return 0;
4045}
4046
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4047/* This function is an analyser which processes the HTTP request body. It looks
4048 * for parameters to be used for the load balancing algorithm (url_param). It
4049 * must only be called after the standard HTTP request processing has occurred,
4050 * because it expects the request to be parsed. It returns zero if it needs to
4051 * read more data, or 1 once it has completed its analysis.
4052 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4053int http_process_request_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4054{
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4055 struct http_txn *txn = &s->txn;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4056 struct http_msg *msg = &s->txn.req;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4057 long long limit = s->be->url_param_post_limit;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4058
4059 /* We have to parse the HTTP request body to find any required data.
4060 * "balance url_param check_post" should have been the only way to get
4061 * into this. We were brought here after HTTP header analysis, so all
4062 * related structures are ready.
4063 */
4064
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4065 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4066 goto missing_data;
4067
4068 if (msg->msg_state < HTTP_MSG_100_SENT) {
4069 /* If we have HTTP/1.1 and Expect: 100-continue, then we must
4070 * send an HTTP/1.1 100 Continue intermediate response.
4071 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4072 if (msg->flags & HTTP_MSGF_VER_11) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4073 struct hdr_ctx ctx;
4074 ctx.idx = 0;
4075 /* Expect is allowed in 1.1, look for it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4076 if (http_find_header2("Expect", 6, req->buf->p, &txn->hdr_idx, &ctx) &&
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4077 unlikely(ctx.vlen == 12 && strncasecmp(ctx.line+ctx.val, "100-continue", 12) == 0)) {
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4078 bo_inject(s->rep, http_100_chunk.str, http_100_chunk.len);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4079 }
4080 }
4081 msg->msg_state = HTTP_MSG_100_SENT;
4082 }
4083
4084 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4085 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4086 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4087 * is still null. We must save the body in msg->next because it
4088 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4089 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4090 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4091
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4092 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4093 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
4094 else
4095 msg->msg_state = HTTP_MSG_DATA;
4096 }
4097
4098 if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4099 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4100 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4101 * TRAILERS state.
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4102 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4103 int ret = http_parse_chunk_size(msg);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4104
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4105 if (!ret)
4106 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4107 else if (ret < 0) {
4108 session_inc_http_err_ctr(s);
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4109 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4110 }
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4111 }
4112
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4113 /* Now we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state.
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4114 * We have the first data byte is in msg->sov. We're waiting for at
4115 * least <url_param_post_limit> bytes after msg->sov.
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4116 */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4117
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4118 if (msg->body_len < limit)
4119 limit = msg->body_len;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4120
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4121 if (req->buf->i - msg->sov >= limit) /* we have enough bytes now */
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4122 goto http_end;
4123
4124 missing_data:
4125 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4126 if (buffer_full(req->buf, global.tune.maxrewrite)) {
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4127 session_inc_http_err_ctr(s);
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4128 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4129 }
Willy Tarreau115acb92009-12-26 13:56:06 +0100[diff] [blame]4130
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4131 if ((req->flags & CF_READ_TIMEOUT) || tick_is_expired(req->analyse_exp, now_ms)) {
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4132 txn->status = 408;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4133 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_408));
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4134
4135 if (!(s->flags & SN_ERR_MASK))
4136 s->flags |= SN_ERR_CLITO;
4137 if (!(s->flags & SN_FINST_MASK))
4138 s->flags |= SN_FINST_D;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4139 goto return_err_msg;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4140 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4141
4142 /* we get here if we need to wait for more data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4143 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]4144 /* Not enough data. We'll re-use the http-request
4145 * timeout here. Ideally, we should set the timeout
4146 * relative to the accept() date. We just set the
4147 * request timeout once at the beginning of the
4148 * request.
4149 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4150 channel_dont_connect(req);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4151 if (!tick_isset(req->analyse_exp))
Willy Tarreaucd7afc02009-07-12 10:03:17 +0200[diff] [blame]4152 req->analyse_exp = tick_add_ifset(now_ms, s->be->timeout.httpreq);
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4153 return 0;
4154 }
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4155
4156 http_end:
4157 /* The situation will not evolve, so let's give up on the analysis. */
4158 s->logs.tv_request = now; /* update the request timer to reflect full request */
4159 req->analysers &= ~an_bit;
4160 req->analyse_exp = TICK_ETERNITY;
4161 return 1;
4162
4163 return_bad_req: /* let's centralize all bad requests */
4164 txn->req.msg_state = HTTP_MSG_ERROR;
4165 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4166 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4167
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4168 if (!(s->flags & SN_ERR_MASK))
4169 s->flags |= SN_ERR_PRXCOND;
4170 if (!(s->flags & SN_FINST_MASK))
4171 s->flags |= SN_FINST_R;
4172
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4173 return_err_msg:
4174 req->analysers = 0;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4175 s->fe->fe_counters.failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4176 if (s->listener->counters)
4177 s->listener->counters->failed_req++;
Willy Tarreau522d6c02009-12-06 18:49:18 +0100[diff] [blame]4178 return 0;
Willy Tarreaud34af782008-11-30 23:36:37 +0100[diff] [blame]4179}
4180
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4181/* send a server's name with an outgoing request over an established connection.
4182 * Note: this function is designed to be called once the request has been scheduled
4183 * for being forwarded. This is the reason why it rewinds the buffer before
4184 * proceeding.
4185 */
Willy Tarreau45c0d982012-03-09 12:11:57 +0100[diff] [blame]4186int 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]4187
4188 struct hdr_ctx ctx;
4189
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4190 char *hdr_name = be->server_id_hdr_name;
4191 int hdr_name_len = be->server_id_hdr_len;
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]4192 struct channel *chn = txn->req.chn;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4193 char *hdr_val;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4194 unsigned int old_o, old_i;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4195
William Lallemandd9e90662012-01-30 17:27:17 +0100[diff] [blame]4196 ctx.idx = 0;
4197
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4198 old_o = chn->buf->o;
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4199 if (old_o) {
4200 /* The request was already skipped, let's restore it */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4201 b_rew(chn->buf, old_o);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4202 }
4203
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4204 old_i = chn->buf->i;
4205 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]4206 /* remove any existing values from the header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]4207 http_remove_header2(&txn->req, &txn->hdr_idx, &ctx);
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4208 }
4209
4210 /* Add the new header requested with the server value */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4211 hdr_val = trash.str;
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4212 memcpy(hdr_val, hdr_name, hdr_name_len);
4213 hdr_val += hdr_name_len;
4214 *hdr_val++ = ':';
4215 *hdr_val++ = ' ';
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]4216 hdr_val += strlcpy2(hdr_val, srv_name, trash.str + trash.size - hdr_val);
4217 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]4218
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4219 if (old_o) {
4220 /* If this was a forwarded request, we must readjust the amount of
4221 * data to be forwarded in order to take into account the size
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4222 * variations. Note that if the request was already scheduled for
4223 * forwarding, it had its req->sol pointing to the body, which
4224 * must then be updated too.
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4225 */
Willy Tarreau2fef9b12013-03-26 01:08:21 +0100[diff] [blame]4226 txn->req.sol += chn->buf->i - old_i;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4227 b_adv(chn->buf, old_o + chn->buf->i - old_i);
Willy Tarreaud1de8af2012-05-18 22:12:14 +0200[diff] [blame]4228 }
4229
Mark Lamourinec2247f02012-01-04 13:02:01 -0500[diff] [blame]4230 return 0;
4231}
4232
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4233/* Terminate current transaction and prepare a new one. This is very tricky
4234 * right now but it works.
4235 */
4236void http_end_txn_clean_session(struct session *s)
4237{
4238 /* FIXME: We need a more portable way of releasing a backend's and a
4239 * server's connections. We need a safer way to reinitialize buffer
4240 * flags. We also need a more accurate method for computing per-request
4241 * data.
4242 */
4243 http_silent_debug(__LINE__, s);
4244
Willy Tarreau7bb68ab2012-05-13 14:48:59 +0200[diff] [blame]4245 s->req->cons->flags |= SI_FL_NOLINGER | SI_FL_NOHALF;
Willy Tarreau73b013b2012-05-21 16:31:45 +0200[diff] [blame]4246 si_shutr(s->req->cons);
4247 si_shutw(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4248
4249 http_silent_debug(__LINE__, s);
4250
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4251 if (s->flags & SN_BE_ASSIGNED) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4252 s->be->beconn--;
Willy Tarreau2d5cd472012-03-01 23:34:37 +0100[diff] [blame]4253 if (unlikely(s->srv_conn))
4254 sess_change_server(s, NULL);
4255 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4256
4257 s->logs.t_close = tv_ms_elapsed(&s->logs.tv_accept, &now);
4258 session_process_counters(s);
Willy Tarreauf059a0f2010-08-03 16:29:52 +0200[diff] [blame]4259 session_stop_backend_counters(s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4260
4261 if (s->txn.status) {
4262 int n;
4263
4264 n = s->txn.status / 100;
4265 if (n < 1 || n > 5)
4266 n = 0;
4267
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4268 if (s->fe->mode == PR_MODE_HTTP) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4269 s->fe->fe_counters.p.http.rsp[n]++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4270 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4271 s->fe->fe_counters.p.http.comp_rsp++;
4272 }
Willy Tarreau24657792010-02-26 10:30:28 +0100[diff] [blame]4273 if ((s->flags & SN_BE_ASSIGNED) &&
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4274 (s->be->mode == PR_MODE_HTTP)) {
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4275 s->be->be_counters.p.http.rsp[n]++;
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4276 s->be->be_counters.p.http.cum_req++;
Willy Tarreau8139b992012-11-27 07:35:31 +0100[diff] [blame]4277 if (s->comp_algo && (s->flags & SN_COMP_READY))
Willy Tarreau5e16cbc2012-11-24 14:54:13 +0100[diff] [blame]4278 s->be->be_counters.p.http.comp_rsp++;
4279 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4280 }
4281
4282 /* don't count other requests' data */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4283 s->logs.bytes_in -= s->req->buf->i;
4284 s->logs.bytes_out -= s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4285
4286 /* let's do a final log if we need it */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]4287 if (!LIST_ISEMPTY(&s->fe->logformat) && s->logs.logwait &&
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4288 !(s->flags & SN_MONITOR) &&
4289 (!(s->fe->options & PR_O_NULLNOLOG) || s->req->total)) {
4290 s->do_log(s);
4291 }
4292
4293 s->logs.accept_date = date; /* user-visible date for logging */
4294 s->logs.tv_accept = now; /* corrected date for internal use */
4295 tv_zero(&s->logs.tv_request);
4296 s->logs.t_queue = -1;
4297 s->logs.t_connect = -1;
4298 s->logs.t_data = -1;
4299 s->logs.t_close = 0;
4300 s->logs.prx_queue_size = 0; /* we get the number of pending conns before us */
4301 s->logs.srv_queue_size = 0; /* we will get this number soon */
4302
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4303 s->logs.bytes_in = s->req->total = s->req->buf->i;
4304 s->logs.bytes_out = s->rep->total = s->rep->buf->i;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4305
4306 if (s->pend_pos)
4307 pendconn_free(s->pend_pos);
4308
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4309 if (objt_server(s->target)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4310 if (s->flags & SN_CURR_SESS) {
4311 s->flags &= ~SN_CURR_SESS;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4312 objt_server(s->target)->cur_sess--;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4313 }
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4314 if (may_dequeue_tasks(objt_server(s->target), s->be))
4315 process_srv_queue(objt_server(s->target));
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4316 }
4317
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4318 s->target = NULL;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4319
4320 s->req->cons->state = s->req->cons->prev_state = SI_ST_INI;
Willy Tarreau32e3c6a2013-10-11 19:34:20 +0200[diff] [blame]4321 si_release_endpoint(s->req->cons);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4322 s->req->cons->err_type = SI_ET_NONE;
Willy Tarreau0b3a4112011-03-27 19:16:56 +0200[diff] [blame]4323 s->req->cons->conn_retries = 0; /* used for logging too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4324 s->req->cons->exp = TICK_ETERNITY;
4325 s->req->cons->flags = SI_FL_NONE;
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4326 s->req->flags &= ~(CF_SHUTW|CF_SHUTW_NOW|CF_AUTO_CONNECT|CF_WRITE_ERROR|CF_STREAMER|CF_STREAMER_FAST|CF_NEVER_WAIT);
4327 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]4328 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]4329 s->flags &= ~(SN_CURR_SESS|SN_REDIRECTABLE);
Willy Tarreau543db622012-11-15 16:41:22 +0100[diff] [blame]4330
4331 if (s->flags & SN_COMP_READY)
4332 s->comp_algo->end(&s->comp_ctx);
4333 s->comp_algo = NULL;
4334 s->flags &= ~SN_COMP_READY;
4335
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4336 s->txn.meth = 0;
4337 http_reset_txn(s);
Willy Tarreaufcffa692010-01-10 14:21:19 +0100[diff] [blame]4338 s->txn.flags |= TX_NOT_FIRST | TX_WAIT_NEXT_RQ;
Willy Tarreauee55dc02010-06-01 10:56:34 +0200[diff] [blame]4339 if (s->fe->options2 & PR_O2_INDEPSTR)
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4340 s->req->cons->flags |= SI_FL_INDEP_STR;
4341
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4342 if (s->fe->options2 & PR_O2_NODELAY) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4343 s->req->flags |= CF_NEVER_WAIT;
4344 s->rep->flags |= CF_NEVER_WAIT;
Willy Tarreau96e31212011-05-30 18:10:30 +0200[diff] [blame]4345 }
4346
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4347 /* if the request buffer is not empty, it means we're
4348 * about to process another request, so send pending
4349 * data with MSG_MORE to merge TCP packets when possible.
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4350 * Just don't do this if the buffer is close to be full,
4351 * because the request will wait for it to flush a little
4352 * bit before proceeding.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4353 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4354 if (s->req->buf->i) {
4355 if (s->rep->buf->o &&
4356 !buffer_full(s->rep->buf, global.tune.maxrewrite) &&
4357 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]4358 s->rep->flags |= CF_EXPECT_MORE;
Willy Tarreau065e8332010-01-08 00:30:20 +0100[diff] [blame]4359 }
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4360
4361 /* we're removing the analysers, we MUST re-enable events detection */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4362 channel_auto_read(s->req);
4363 channel_auto_close(s->req);
4364 channel_auto_read(s->rep);
4365 channel_auto_close(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4366
Willy Tarreau342b11c2010-11-24 16:22:09 +0100[diff] [blame]4367 s->req->analysers = s->listener->analysers;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4368 s->rep->analysers = 0;
4369
4370 http_silent_debug(__LINE__, s);
4371}
4372
4373
4374/* This function updates the request state machine according to the response
4375 * state machine and buffer flags. It returns 1 if it changes anything (flag
4376 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4377 * it is only used to find when a request/response couple is complete. Both
4378 * this function and its equivalent should loop until both return zero. It
4379 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4380 */
4381int http_sync_req_state(struct session *s)
4382{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4383 struct channel *chn = s->req;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4384 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4385 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4386 unsigned int old_state = txn->req.msg_state;
4387
4388 http_silent_debug(__LINE__, s);
4389 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY))
4390 return 0;
4391
4392 if (txn->req.msg_state == HTTP_MSG_DONE) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4393 /* No need to read anymore, the request was completely parsed.
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4394 * We can shut the read side unless we want to abort_on_close,
4395 * or we have a POST request. The issue with POST requests is
4396 * that some browsers still send a CRLF after the request, and
4397 * this CRLF must be read so that it does not remain in the kernel
4398 * buffers, otherwise a close could cause an RST on some systems
4399 * (eg: Linux).
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4400 */
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4401 if (!(s->be->options & PR_O_ABRT_CLOSE) && txn->meth != HTTP_METH_POST)
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4402 channel_dont_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4403
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4404 /* if the server closes the connection, we want to immediately react
4405 * and close the socket to save packets and syscalls.
4406 */
4407 chn->cons->flags |= SI_FL_NOHALF;
4408
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4409 if (txn->rsp.msg_state == HTTP_MSG_ERROR)
4410 goto wait_other_side;
4411
4412 if (txn->rsp.msg_state < HTTP_MSG_DONE) {
4413 /* The server has not finished to respond, so we
4414 * don't want to move in order not to upset it.
4415 */
4416 goto wait_other_side;
4417 }
4418
4419 if (txn->rsp.msg_state == HTTP_MSG_TUNNEL) {
4420 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4421 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4422 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4423 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4424 goto wait_other_side;
4425 }
4426
4427 /* When we get here, it means that both the request and the
4428 * response have finished receiving. Depending on the connection
4429 * mode, we'll have to wait for the last bytes to leave in either
4430 * direction, and sometimes for a close to be effective.
4431 */
4432
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4433 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4434 /* Server-close mode : queue a connection close to the server */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4435 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW)))
4436 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4437 }
4438 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4439 /* Option forceclose is set, or either side wants to close,
4440 * let's enforce it now that we're not expecting any new
4441 * data to come. The caller knows the session is complete
4442 * once both states are CLOSED.
4443 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4444 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4445 channel_shutr_now(chn);
4446 channel_shutw_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4447 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4448 }
4449 else {
4450 /* The last possible modes are keep-alive and tunnel. Since tunnel
4451 * mode does not set the body analyser, we can't reach this place
4452 * in tunnel mode, so we're left with keep-alive only.
4453 * This mode is currently not implemented, we switch to tunnel mode.
4454 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4455 channel_auto_read(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4456 txn->req.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4457 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4458 }
4459
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4460 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4461 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4462 chn->cons->flags |= SI_FL_NOLINGER; /* we want to close ASAP */
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4463
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4464 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4465 txn->req.msg_state = HTTP_MSG_CLOSING;
4466 goto http_msg_closing;
4467 }
4468 else {
4469 txn->req.msg_state = HTTP_MSG_CLOSED;
4470 goto http_msg_closed;
4471 }
4472 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4473 goto wait_other_side;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4474 }
4475
4476 if (txn->req.msg_state == HTTP_MSG_CLOSING) {
4477 http_msg_closing:
4478 /* nothing else to forward, just waiting for the output buffer
4479 * to be empty and for the shutw_now to take effect.
4480 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4481 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4482 txn->req.msg_state = HTTP_MSG_CLOSED;
4483 goto http_msg_closed;
4484 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4485 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4486 txn->req.msg_state = HTTP_MSG_ERROR;
4487 goto wait_other_side;
4488 }
4489 }
4490
4491 if (txn->req.msg_state == HTTP_MSG_CLOSED) {
4492 http_msg_closed:
4493 goto wait_other_side;
4494 }
4495
4496 wait_other_side:
4497 http_silent_debug(__LINE__, s);
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4498 return txn->req.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4499}
4500
4501
4502/* This function updates the response state machine according to the request
4503 * state machine and buffer flags. It returns 1 if it changes anything (flag
4504 * or state), otherwise zero. It ignores any state before HTTP_MSG_DONE, as
4505 * it is only used to find when a request/response couple is complete. Both
4506 * this function and its equivalent should loop until both return zero. It
4507 * can set its own state to DONE, CLOSING, CLOSED, TUNNEL, ERROR.
4508 */
4509int http_sync_res_state(struct session *s)
4510{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4511 struct channel *chn = s->rep;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4512 struct http_txn *txn = &s->txn;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4513 unsigned int old_flags = chn->flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4514 unsigned int old_state = txn->rsp.msg_state;
4515
4516 http_silent_debug(__LINE__, s);
4517 if (unlikely(txn->rsp.msg_state < HTTP_MSG_BODY))
4518 return 0;
4519
4520 if (txn->rsp.msg_state == HTTP_MSG_DONE) {
4521 /* In theory, we don't need to read anymore, but we must
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4522 * still monitor the server connection for a possible close
4523 * while the request is being uploaded, so we don't disable
4524 * reading.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4525 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4526 /* channel_dont_read(chn); */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4527
4528 if (txn->req.msg_state == HTTP_MSG_ERROR)
4529 goto wait_other_side;
4530
4531 if (txn->req.msg_state < HTTP_MSG_DONE) {
4532 /* The client seems to still be sending data, probably
4533 * because we got an error response during an upload.
4534 * We have the choice of either breaking the connection
4535 * or letting it pass through. Let's do the later.
4536 */
4537 goto wait_other_side;
4538 }
4539
4540 if (txn->req.msg_state == HTTP_MSG_TUNNEL) {
4541 /* if any side switches to tunnel mode, the other one does too */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4542 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4543 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4544 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4545 goto wait_other_side;
4546 }
4547
4548 /* When we get here, it means that both the request and the
4549 * response have finished receiving. Depending on the connection
4550 * mode, we'll have to wait for the last bytes to leave in either
4551 * direction, and sometimes for a close to be effective.
4552 */
4553
4554 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
4555 /* Server-close mode : shut read and wait for the request
4556 * side to close its output buffer. The caller will detect
4557 * when we're in DONE and the other is in CLOSED and will
4558 * catch that for the final cleanup.
4559 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4560 if (!(chn->flags & (CF_SHUTR|CF_SHUTR_NOW)))
4561 channel_shutr_now(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4562 }
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4563 else if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
4564 /* Option forceclose is set, or either side wants to close,
4565 * let's enforce it now that we're not expecting any new
4566 * data to come. The caller knows the session is complete
4567 * once both states are CLOSED.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4568 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4569 if (!(chn->flags & (CF_SHUTW|CF_SHUTW_NOW))) {
4570 channel_shutr_now(chn);
4571 channel_shutw_now(chn);
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4572 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4573 }
4574 else {
Willy Tarreaucce7fa42010-01-16 23:19:39 +0100[diff] [blame]4575 /* The last possible modes are keep-alive and tunnel. Since tunnel
4576 * mode does not set the body analyser, we can't reach this place
4577 * in tunnel mode, so we're left with keep-alive only.
4578 * This mode is currently not implemented, we switch to tunnel mode.
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4579 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4580 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4581 txn->rsp.msg_state = HTTP_MSG_TUNNEL;
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4582 chn->flags |= CF_NEVER_WAIT;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4583 }
4584
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4585 if (chn->flags & (CF_SHUTW|CF_SHUTW_NOW)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4586 /* if we've just closed an output, let's switch */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4587 if (!channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4588 txn->rsp.msg_state = HTTP_MSG_CLOSING;
4589 goto http_msg_closing;
4590 }
4591 else {
4592 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4593 goto http_msg_closed;
4594 }
4595 }
4596 goto wait_other_side;
4597 }
4598
4599 if (txn->rsp.msg_state == HTTP_MSG_CLOSING) {
4600 http_msg_closing:
4601 /* nothing else to forward, just waiting for the output buffer
4602 * to be empty and for the shutw_now to take effect.
4603 */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4604 if (channel_is_empty(chn)) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4605 txn->rsp.msg_state = HTTP_MSG_CLOSED;
4606 goto http_msg_closed;
4607 }
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4608 else if (chn->flags & CF_SHUTW) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4609 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4610 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4611 if (objt_server(s->target))
4612 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4613 goto wait_other_side;
4614 }
4615 }
4616
4617 if (txn->rsp.msg_state == HTTP_MSG_CLOSED) {
4618 http_msg_closed:
4619 /* drop any pending data */
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4620 bi_erase(chn);
4621 channel_auto_close(chn);
4622 channel_auto_read(chn);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4623 goto wait_other_side;
4624 }
4625
4626 wait_other_side:
4627 http_silent_debug(__LINE__, s);
Willy Tarreaufc47f912012-10-20 10:38:09 +0200[diff] [blame]4628 /* We force the response to leave immediately if we're waiting for the
4629 * other side, since there is no pending shutdown to push it out.
4630 */
4631 if (!channel_is_empty(chn))
4632 chn->flags |= CF_SEND_DONTWAIT;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]4633 return txn->rsp.msg_state != old_state || chn->flags != old_flags;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4634}
4635
4636
4637/* Resync the request and response state machines. Return 1 if either state
4638 * changes.
4639 */
4640int http_resync_states(struct session *s)
4641{
4642 struct http_txn *txn = &s->txn;
4643 int old_req_state = txn->req.msg_state;
4644 int old_res_state = txn->rsp.msg_state;
4645
4646 http_silent_debug(__LINE__, s);
4647 http_sync_req_state(s);
4648 while (1) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4649 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4650 if (!http_sync_res_state(s))
4651 break;
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4652 http_silent_debug(__LINE__, s);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4653 if (!http_sync_req_state(s))
4654 break;
4655 }
4656 http_silent_debug(__LINE__, s);
4657 /* OK, both state machines agree on a compatible state.
4658 * There are a few cases we're interested in :
4659 * - HTTP_MSG_TUNNEL on either means we have to disable both analysers
4660 * - HTTP_MSG_CLOSED on both sides means we've reached the end in both
4661 * directions, so let's simply disable both analysers.
4662 * - HTTP_MSG_CLOSED on the response only means we must abort the
4663 * request.
4664 * - HTTP_MSG_CLOSED on the request and HTTP_MSG_DONE on the response
4665 * with server-close mode means we've completed one request and we
4666 * must re-initialize the server connection.
4667 */
4668
4669 if (txn->req.msg_state == HTTP_MSG_TUNNEL ||
4670 txn->rsp.msg_state == HTTP_MSG_TUNNEL ||
4671 (txn->req.msg_state == HTTP_MSG_CLOSED &&
4672 txn->rsp.msg_state == HTTP_MSG_CLOSED)) {
4673 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4674 channel_auto_close(s->req);
4675 channel_auto_read(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4676 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4677 channel_auto_close(s->rep);
4678 channel_auto_read(s->rep);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4679 }
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4680 else if ((txn->req.msg_state >= HTTP_MSG_DONE &&
4681 (txn->rsp.msg_state == HTTP_MSG_CLOSED || (s->rep->flags & CF_SHUTW))) ||
Willy Tarreau2fa144c2010-01-04 23:13:26 +0100[diff] [blame]4682 txn->rsp.msg_state == HTTP_MSG_ERROR ||
Willy Tarreau40f151a2012-12-20 12:10:09 +0100[diff] [blame]4683 txn->req.msg_state == HTTP_MSG_ERROR) {
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4684 s->rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4685 channel_auto_close(s->rep);
4686 channel_auto_read(s->rep);
Willy Tarreau90deb182010-01-07 00:20:41 +0100[diff] [blame]4687 s->req->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4688 channel_abort(s->req);
4689 channel_auto_close(s->req);
4690 channel_auto_read(s->req);
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]4691 bi_erase(s->req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4692 }
4693 else if (txn->req.msg_state == HTTP_MSG_CLOSED &&
4694 txn->rsp.msg_state == HTTP_MSG_DONE &&
4695 ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)) {
4696 /* server-close: terminate this server connection and
4697 * reinitialize a fresh-new transaction.
4698 */
4699 http_end_txn_clean_session(s);
4700 }
4701
4702 http_silent_debug(__LINE__, s);
4703 return txn->req.msg_state != old_req_state ||
4704 txn->rsp.msg_state != old_res_state;
4705}
4706
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4707/* This function is an analyser which forwards request body (including chunk
4708 * sizes if any). It is called as soon as we must forward, even if we forward
4709 * zero byte. The only situation where it must not be called is when we're in
4710 * tunnel mode and we want to forward till the close. It's used both to forward
4711 * remaining data and to resync after end of body. It expects the msg_state to
4712 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
4713 * 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]4714 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4715 * bytes of pending data + the headers if not already done (between sol and sov).
4716 * 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]4717 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4718int http_request_forward_body(struct session *s, struct channel *req, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4719{
4720 struct http_txn *txn = &s->txn;
4721 struct http_msg *msg = &s->txn.req;
4722
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4723 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
4724 return 0;
4725
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4726 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]4727 ((req->flags & CF_SHUTW) && (req->to_forward || req->buf->o))) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4728 /* Output closed while we were sending data. We must abort and
4729 * wake the other side up.
4730 */
4731 msg->msg_state = HTTP_MSG_ERROR;
4732 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]4733 return 1;
4734 }
4735
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4736 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4737 channel_auto_close(req);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4738
4739 /* Note that we don't have to send 100-continue back because we don't
4740 * need the data to complete our job, and it's up to the server to
4741 * decide whether to return 100, 417 or anything else in return of
4742 * an "Expect: 100-continue" header.
4743 */
4744
4745 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]4746 /* we have msg->sov which points to the first byte of message body.
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4747 * req->buf->p still points to the beginning of the message and msg->sol
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4748 * is still null. We must save the body in msg->next because it
4749 * survives buffer re-alignments.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4750 */
Willy Tarreauea1175a2012-03-05 15:52:30 +0100[diff] [blame]4751 msg->next = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4752
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4753 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4754 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4755 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4756 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4757 }
4758
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4759 while (1) {
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4760 unsigned int bytes;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4761
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4762 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4763 /* we may have some data pending between sol and sov */
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4764 bytes = msg->sov - msg->sol;
Willy Tarreaud8ee85a2011-03-28 16:06:28 +0200[diff] [blame]4765 if (msg->chunk_len || bytes) {
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]4766 msg->sol = msg->sov;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4767 msg->next -= bytes; /* will be forwarded */
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]4768 msg->chunk_len += bytes;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4769 msg->chunk_len -= channel_forward(req, msg->chunk_len);
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]4770 }
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]4771
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4772 if (msg->msg_state == HTTP_MSG_DATA) {
4773 /* must still forward */
4774 if (req->to_forward)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4775 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4776
4777 /* nothing left to forward */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4778 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4779 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4780 else
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4781 msg->msg_state = HTTP_MSG_DONE;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]4782 }
4783 else if (msg->msg_state == HTTP_MSG_CHUNK_SIZE) {
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]4784 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]4785 * set ->sov and ->next to point to the body and switch to DATA or
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4786 * TRAILERS state.
4787 */
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4788 int ret = http_parse_chunk_size(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4789
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4790 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4791 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4792 else if (ret < 0) {
4793 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4794 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4795 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]4796 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4797 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4798 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4799 }
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4800 else if (msg->msg_state == HTTP_MSG_CHUNK_CRLF) {
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4801 /* we want the CRLF after the data */
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4802 int ret = http_skip_chunk_crlf(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4803
4804 if (ret == 0)
4805 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4806 else if (ret < 0) {
4807 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4808 if (msg->err_pos >= 0)
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]4809 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]4810 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4811 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4812 /* we're in MSG_CHUNK_SIZE now */
4813 }
4814 else if (msg->msg_state == HTTP_MSG_TRAILERS) {
Willy Tarreau4baf44b2012-03-09 14:10:20 +0100[diff] [blame]4815 int ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4816
4817 if (ret == 0)
4818 goto missing_data;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4819 else if (ret < 0) {
4820 session_inc_http_err_ctr(s);
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4821 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4822 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]4823 goto return_bad_req;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]4824 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4825 /* we're in HTTP_MSG_DONE now */
4826 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4827 else {
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4828 int old_state = msg->msg_state;
4829
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4830 /* other states, DONE...TUNNEL */
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]4831 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4832 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
4833 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4834 channel_dont_close(req);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4835 if (http_resync_states(s)) {
4836 /* some state changes occurred, maybe the analyser
4837 * was disabled too.
Willy Tarreauface8392010-01-03 11:37:54 +0100[diff] [blame]4838 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4839 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4840 if (req->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4841 /* request errors are most likely due to
4842 * the server aborting the transfer.
4843 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4844 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4845 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]4846 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]4847 http_capture_bad_message(&s->fe->invalid_req, s, msg, old_state, s->be);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4848 goto return_bad_req;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]4849 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4850 return 1;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]4851 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4852
4853 /* If "option abortonclose" is set on the backend, we
4854 * want to monitor the client's connection and forward
4855 * any shutdown notification to the server, which will
4856 * decide whether to close or to go on processing the
4857 * request.
4858 */
4859 if (s->be->options & PR_O_ABRT_CLOSE) {
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4860 channel_auto_read(req);
4861 channel_auto_close(req);
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4862 }
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4863 else if (s->txn.meth == HTTP_METH_POST) {
4864 /* POST requests may require to read extra CRLF
4865 * sent by broken browsers and which could cause
4866 * an RST to be sent upon close on some systems
4867 * (eg: Linux).
4868 */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4869 channel_auto_read(req);
Willy Tarreau58bd8fd2010-09-28 14:16:41 +0200[diff] [blame]4870 }
Willy Tarreau5c54c712010-07-17 08:02:58 +0200[diff] [blame]4871
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4872 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4873 }
4874 }
4875
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4876 missing_data:
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4877 /* stop waiting for data if the input is closed before the end */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4878 if (req->flags & CF_SHUTR) {
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4879 if (!(s->flags & SN_ERR_MASK))
4880 s->flags |= SN_ERR_CLICL;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4881 if (!(s->flags & SN_FINST_MASK)) {
4882 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4883 s->flags |= SN_FINST_H;
4884 else
4885 s->flags |= SN_FINST_D;
4886 }
4887
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4888 s->fe->fe_counters.cli_aborts++;
4889 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4890 if (objt_server(s->target))
4891 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4892
4893 goto return_bad_req_stats_ok;
Willy Tarreau79ebac62010-06-07 13:47:49 +0200[diff] [blame]4894 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4895
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4896 /* waiting for the last bits to leave the buffer */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4897 if (req->flags & CF_SHUTW)
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4898 goto aborted_xfer;
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4899
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4900 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4901 * 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]4902 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4903 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]4904 channel_dont_close(req);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]4905
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4906 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4907 * 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]4908 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]4909 * modes are already handled by the stream sock layer. We must not do
4910 * this in content-length mode because it could present the MSG_MORE
4911 * flag with the last block of forwarded data, which would cause an
4912 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4913 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]4914 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]4915 req->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]4916
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]4917 http_silent_debug(__LINE__, s);
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]4918 return 0;
4919
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4920 return_bad_req: /* let's centralize all bad requests */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4921 s->fe->fe_counters.failed_req++;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4922 if (s->listener->counters)
4923 s->listener->counters->failed_req++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4924 return_bad_req_stats_ok:
4925 txn->req.msg_state = HTTP_MSG_ERROR;
4926 if (txn->status) {
4927 /* Note: we don't send any error if some data were already sent */
4928 stream_int_retnclose(req->prod, NULL);
4929 } else {
4930 txn->status = 400;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4931 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_400));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4932 }
4933 req->analysers = 0;
4934 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]4935
4936 if (!(s->flags & SN_ERR_MASK))
4937 s->flags |= SN_ERR_PRXCOND;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4938 if (!(s->flags & SN_FINST_MASK)) {
4939 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4940 s->flags |= SN_FINST_H;
4941 else
4942 s->flags |= SN_FINST_D;
4943 }
4944 return 0;
4945
4946 aborted_xfer:
4947 txn->req.msg_state = HTTP_MSG_ERROR;
4948 if (txn->status) {
4949 /* Note: we don't send any error if some data were already sent */
4950 stream_int_retnclose(req->prod, NULL);
4951 } else {
4952 txn->status = 502;
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]4953 stream_int_retnclose(req->prod, http_error_message(s, HTTP_ERR_502));
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4954 }
4955 req->analysers = 0;
4956 s->rep->analysers = 0; /* we're in data phase, we want to abort both directions */
4957
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]4958 s->fe->fe_counters.srv_aborts++;
4959 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]4960 if (objt_server(s->target))
4961 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]4962
4963 if (!(s->flags & SN_ERR_MASK))
4964 s->flags |= SN_ERR_SRVCL;
4965 if (!(s->flags & SN_FINST_MASK)) {
4966 if (txn->rsp.msg_state < HTTP_MSG_ERROR)
4967 s->flags |= SN_FINST_H;
4968 else
4969 s->flags |= SN_FINST_D;
4970 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]4971 return 0;
4972}
4973
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4974/* This stream analyser waits for a complete HTTP response. It returns 1 if the
4975 * processing can continue on next analysers, or zero if it either needs more
4976 * data or wants to immediately abort the response (eg: timeout, error, ...). It
4977 * is tied to AN_RES_WAIT_HTTP and may may remove itself from s->rep->analysers
4978 * when it has nothing left to do, and may remove any analyser when it wants to
4979 * abort.
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4980 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]4981int http_wait_for_response(struct session *s, struct channel *rep, int an_bit)
Willy Tarreauc65a3ba2008-08-11 23:42:50 +0200[diff] [blame]4982{
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4983 struct http_txn *txn = &s->txn;
4984 struct http_msg *msg = &txn->rsp;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]4985 struct hdr_ctx ctx;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]4986 int use_close_only;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4987 int cur_idx;
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]4988 int n;
Willy Tarreauadfb8562008-08-11 15:24:42 +0200[diff] [blame]4989
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]4990 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]4991 now_ms, __FUNCTION__,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4992 s,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4993 rep,
4994 rep->rex, rep->wex,
4995 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]4996 rep->buf->i,
Willy Tarreau3a16b2c2008-08-28 08:54:27 +0200[diff] [blame]4997 rep->analysers);
Willy Tarreau67f0eea2008-08-10 22:55:22 +0200[diff] [blame]4998
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]4999 /*
5000 * Now parse the partial (or complete) lines.
5001 * We will check the response syntax, and also join multi-line
5002 * headers. An index of all the lines will be elaborated while
5003 * parsing.
5004 *
5005 * For the parsing, we use a 28 states FSM.
5006 *
5007 * Here is the information we currently have :
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5008 * rep->buf->p = beginning of response
5009 * rep->buf->p + msg->eoh = end of processed headers / start of current one
5010 * rep->buf->p + rep->buf->i = end of input data
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5011 * msg->eol = end of current header or line (LF or CRLF)
5012 * msg->next = first non-visited byte
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5013 */
5014
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5015 /* There's a protected area at the end of the buffer for rewriting
5016 * purposes. We don't want to start to parse the request if the
5017 * protected area is affected, because we may have to move processed
5018 * data later, which is much more complicated.
5019 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5020 if (buffer_not_empty(rep->buf) && msg->msg_state < HTTP_MSG_ERROR) {
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5021 if (unlikely(!channel_reserved(rep))) {
5022 /* some data has still not left the buffer, wake us once that's done */
5023 if (rep->flags & (CF_SHUTW|CF_SHUTW_NOW|CF_WRITE_ERROR|CF_WRITE_TIMEOUT))
5024 goto abort_response;
5025 channel_dont_close(rep);
5026 rep->flags |= CF_READ_DONTWAIT; /* try to get back here ASAP */
5027 return 0;
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5028 }
5029
Willy Tarreau379357a2013-06-08 12:55:46 +0200[diff] [blame]5030 if (unlikely(bi_end(rep->buf) < b_ptr(rep->buf, msg->next) ||
5031 bi_end(rep->buf) > rep->buf->data + rep->buf->size - global.tune.maxrewrite))
5032 buffer_slow_realign(rep->buf);
5033
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5034 if (likely(msg->next < rep->buf->i))
Willy Tarreaua560c212012-03-09 13:50:57 +0100[diff] [blame]5035 http_msg_analyzer(msg, &txn->hdr_idx);
Willy Tarreau83e3af02009-12-28 17:39:57 +0100[diff] [blame]5036 }
5037
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5038 /* 1: we might have to print this header in debug mode */
5039 if (unlikely((global.mode & MODE_DEBUG) &&
5040 (!(global.mode & MODE_QUIET) || (global.mode & MODE_VERBOSE)) &&
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5041 (msg->msg_state >= HTTP_MSG_BODY || msg->msg_state == HTTP_MSG_ERROR))) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5042 char *eol, *sol;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5043
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5044 sol = rep->buf->p;
5045 eol = sol + (msg->sl.st.l ? msg->sl.st.l : rep->buf->i);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5046 debug_hdr("srvrep", s, sol, eol);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5047
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5048 sol += hdr_idx_first_pos(&txn->hdr_idx);
5049 cur_idx = hdr_idx_first_idx(&txn->hdr_idx);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5050
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5051 while (cur_idx) {
5052 eol = sol + txn->hdr_idx.v[cur_idx].len;
5053 debug_hdr("srvhdr", s, sol, eol);
5054 sol = eol + txn->hdr_idx.v[cur_idx].cr + 1;
5055 cur_idx = txn->hdr_idx.v[cur_idx].next;
5056 }
5057 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5058
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5059 /*
5060 * Now we quickly check if we have found a full valid response.
5061 * If not so, we check the FD and buffer states before leaving.
5062 * A full response is indicated by the fact that we have seen
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5063 * the double LF/CRLF, so the state is >= HTTP_MSG_BODY. Invalid
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5064 * responses are checked first.
5065 *
5066 * Depending on whether the client is still there or not, we
5067 * may send an error response back or not. Note that normally
5068 * we should only check for HTTP status there, and check I/O
5069 * errors somewhere else.
5070 */
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5071
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5072 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5073 /* Invalid response */
5074 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
5075 /* we detected a parsing error. We want to archive this response
5076 * in the dedicated proxy area for later troubleshooting.
5077 */
5078 hdr_response_bad:
5079 if (msg->msg_state == HTTP_MSG_ERROR || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5080 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]5081
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5082 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5083 if (objt_server(s->target)) {
5084 objt_server(s->target)->counters.failed_resp++;
5085 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5086 }
Willy Tarreau64648412010-03-05 10:41:54 +0100[diff] [blame]5087 abort_response:
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5088 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5089 rep->analysers = 0;
5090 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5091 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5092 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5093 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5094
5095 if (!(s->flags & SN_ERR_MASK))
5096 s->flags |= SN_ERR_PRXCOND;
5097 if (!(s->flags & SN_FINST_MASK))
5098 s->flags |= SN_FINST_H;
5099
5100 return 0;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5101 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5102
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5103 /* too large response does not fit in buffer. */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5104 else if (buffer_full(rep->buf, global.tune.maxrewrite)) {
Willy Tarreaufec4d892011-09-02 20:04:57 +0200[diff] [blame]5105 if (msg->err_pos < 0)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5106 msg->err_pos = rep->buf->i;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5107 goto hdr_response_bad;
5108 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5109
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5110 /* read error */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5111 else if (rep->flags & CF_READ_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5112 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5113 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5114
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5115 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5116 if (objt_server(s->target)) {
5117 objt_server(s->target)->counters.failed_resp++;
5118 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_ERROR);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5119 }
Willy Tarreau461f6622008-08-15 23:43:19 +0200[diff] [blame]5120
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5121 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5122 rep->analysers = 0;
5123 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5124 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5125 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5126 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5127
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5128 if (!(s->flags & SN_ERR_MASK))
5129 s->flags |= SN_ERR_SRVCL;
5130 if (!(s->flags & SN_FINST_MASK))
5131 s->flags |= SN_FINST_H;
Willy Tarreaucebf57e2008-08-15 18:16:37 +0200[diff] [blame]5132 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5133 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5134
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5135 /* read timeout : return a 504 to the client. */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5136 else if (rep->flags & CF_READ_TIMEOUT) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5137 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5138 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5139
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5140 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5141 if (objt_server(s->target)) {
5142 objt_server(s->target)->counters.failed_resp++;
5143 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_READ_TIMEOUT);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5144 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5145
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5146 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5147 rep->analysers = 0;
5148 txn->status = 504;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5149 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5150 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5151 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_504));
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]5152
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5153 if (!(s->flags & SN_ERR_MASK))
5154 s->flags |= SN_ERR_SRVTO;
5155 if (!(s->flags & SN_FINST_MASK))
5156 s->flags |= SN_FINST_H;
5157 return 0;
5158 }
Willy Tarreaua7c52762008-08-16 18:40:18 +0200[diff] [blame]5159
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]5160 /* client abort with an abortonclose */
5161 else if ((rep->flags & CF_SHUTR) && ((s->req->flags & (CF_SHUTR|CF_SHUTW)) == (CF_SHUTR|CF_SHUTW))) {
5162 s->fe->fe_counters.cli_aborts++;
5163 s->be->be_counters.cli_aborts++;
5164 if (objt_server(s->target))
5165 objt_server(s->target)->counters.cli_aborts++;
5166
5167 rep->analysers = 0;
5168 channel_auto_close(rep);
5169
5170 txn->status = 400;
5171 bi_erase(rep);
5172 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_400));
5173
5174 if (!(s->flags & SN_ERR_MASK))
5175 s->flags |= SN_ERR_CLICL;
5176 if (!(s->flags & SN_FINST_MASK))
5177 s->flags |= SN_FINST_H;
5178
5179 /* process_session() will take care of the error */
5180 return 0;
5181 }
5182
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5183 /* close from server, capture the response if the server has started to respond */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5184 else if (rep->flags & CF_SHUTR) {
Willy Tarreau3b8c08a2011-09-02 20:16:24 +0200[diff] [blame]5185 if (msg->msg_state >= HTTP_MSG_RPVER || msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5186 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5187
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5188 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5189 if (objt_server(s->target)) {
5190 objt_server(s->target)->counters.failed_resp++;
5191 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_BROKEN_PIPE);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5192 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5193
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5194 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5195 rep->analysers = 0;
5196 txn->status = 502;
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5197 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5198 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5199 stream_int_retnclose(rep->cons, http_error_message(s, HTTP_ERR_502));
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5200
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5201 if (!(s->flags & SN_ERR_MASK))
5202 s->flags |= SN_ERR_SRVCL;
5203 if (!(s->flags & SN_FINST_MASK))
5204 s->flags |= SN_FINST_H;
5205 return 0;
5206 }
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5207
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5208 /* write error to client (we don't send any message then) */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5209 else if (rep->flags & CF_WRITE_ERROR) {
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5210 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5211 http_capture_bad_message(&s->be->invalid_rep, s, msg, msg->msg_state, s->fe);
Krzysztof Piotr Oledzki5fb18822009-10-13 21:14:09 +0200[diff] [blame]5212
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5213 s->be->be_counters.failed_resp++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5214 rep->analysers = 0;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5215 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5216
5217 if (!(s->flags & SN_ERR_MASK))
5218 s->flags |= SN_ERR_CLICL;
5219 if (!(s->flags & SN_FINST_MASK))
5220 s->flags |= SN_FINST_H;
5221
5222 /* process_session() will take care of the error */
5223 return 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5224 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5225
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5226 channel_dont_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5227 return 0;
5228 }
5229
5230 /* More interesting part now : we know that we have a complete
5231 * response which at least looks like HTTP. We have an indicator
5232 * of each header's length, so we can parse them quickly.
5233 */
5234
5235 if (unlikely(msg->err_pos >= 0))
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5236 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]5237
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5238 /*
5239 * 1: get the status code
5240 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5241 n = rep->buf->p[msg->sl.st.c] - '0';
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5242 if (n < 1 || n > 5)
5243 n = 0;
Willy Tarreauda7ff642010-06-23 11:44:09 +0200[diff] [blame]5244 /* when the client triggers a 4xx from the server, it's most often due
5245 * to a missing object or permission. These events should be tracked
5246 * because if they happen often, it may indicate a brute force or a
5247 * vulnerability scan.
5248 */
5249 if (n == 4)
5250 session_inc_http_err_ctr(s);
5251
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5252 if (objt_server(s->target))
5253 objt_server(s->target)->counters.p.http.rsp[n]++;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5254
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5255 /* check if the response is HTTP/1.1 or above */
5256 if ((msg->sl.st.v_l == 8) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5257 ((rep->buf->p[5] > '1') ||
5258 ((rep->buf->p[5] == '1') && (rep->buf->p[7] >= '1'))))
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5259 msg->flags |= HTTP_MSGF_VER_11;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5260
5261 /* "connection" has not been parsed yet */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5262 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]5263
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5264 /* transfer length unknown*/
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5265 msg->flags &= ~HTTP_MSGF_XFER_LEN;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5266
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5267 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]5268
Willy Tarreau39650402010-03-15 19:44:39 +0100[diff] [blame]5269 /* Adjust server's health based on status code. Note: status codes 501
5270 * and 505 are triggered on demand by client request, so we must not
5271 * count them as server failures.
5272 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5273 if (objt_server(s->target)) {
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5274 if (txn->status >= 100 && (txn->status < 500 || txn->status == 501 || txn->status == 505))
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5275 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_OK);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5276 else
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5277 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_STS);
Willy Tarreaud45b3d52010-05-20 11:49:03 +0200[diff] [blame]5278 }
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5279
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5280 /*
5281 * 2: check for cacheability.
5282 */
5283
5284 switch (txn->status) {
5285 case 200:
5286 case 203:
5287 case 206:
5288 case 300:
5289 case 301:
5290 case 410:
5291 /* RFC2616 @13.4:
5292 * "A response received with a status code of
5293 * 200, 203, 206, 300, 301 or 410 MAY be stored
5294 * by a cache (...) unless a cache-control
5295 * directive prohibits caching."
5296 *
5297 * RFC2616 @9.5: POST method :
5298 * "Responses to this method are not cacheable,
5299 * unless the response includes appropriate
5300 * Cache-Control or Expires header fields."
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5301 */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5302 if (likely(txn->meth != HTTP_METH_POST) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5303 ((s->be->options & PR_O_CHK_CACHE) || (s->be->ck_opts & PR_CK_NOC)))
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5304 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
5305 break;
5306 default:
5307 break;
5308 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5309
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5310 /*
5311 * 3: we may need to capture headers
5312 */
5313 s->logs.logwait &= ~LW_RESP;
Willy Tarreau42f7d892012-03-24 08:28:09 +0100[diff] [blame]5314 if (unlikely((s->logs.logwait & LW_RSPHDR) && txn->rsp.cap))
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5315 capture_headers(rep->buf->p, &txn->hdr_idx,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5316 txn->rsp.cap, s->fe->rsp_cap);
5317
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5318 /* 4: determine the transfer-length.
5319 * According to RFC2616 #4.4, amended by the HTTPbis working group,
5320 * the presence of a message-body in a RESPONSE and its transfer length
5321 * must be determined that way :
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5322 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5323 * All responses to the HEAD request method MUST NOT include a
5324 * message-body, even though the presence of entity-header fields
5325 * might lead one to believe they do. All 1xx (informational), 204
5326 * (No Content), and 304 (Not Modified) responses MUST NOT include a
5327 * message-body. All other responses do include a message-body,
5328 * although it MAY be of zero length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5329 *
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5330 * 1. Any response which "MUST NOT" include a message-body (such as the
5331 * 1xx, 204 and 304 responses and any response to a HEAD request) is
5332 * always terminated by the first empty line after the header fields,
5333 * regardless of the entity-header fields present in the message.
5334 *
5335 * 2. If a Transfer-Encoding header field (Section 9.7) is present and
5336 * the "chunked" transfer-coding (Section 6.2) is used, the
5337 * transfer-length is defined by the use of this transfer-coding.
5338 * If a Transfer-Encoding header field is present and the "chunked"
5339 * transfer-coding is not present, the transfer-length is defined by
5340 * the sender closing the connection.
5341 *
5342 * 3. If a Content-Length header field is present, its decimal value in
5343 * OCTETs represents both the entity-length and the transfer-length.
5344 * If a message is received with both a Transfer-Encoding header
5345 * field and a Content-Length header field, the latter MUST be ignored.
5346 *
5347 * 4. If the message uses the media type "multipart/byteranges", and
5348 * the transfer-length is not otherwise specified, then this self-
5349 * delimiting media type defines the transfer-length. This media
5350 * type MUST NOT be used unless the sender knows that the recipient
5351 * can parse it; the presence in a request of a Range header with
5352 * multiple byte-range specifiers from a 1.1 client implies that the
5353 * client can parse multipart/byteranges responses.
5354 *
5355 * 5. By the server closing the connection.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5356 */
5357
5358 /* Skip parsing if no content length is possible. The response flags
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5359 * remain 0 as well as the chunk_len, which may or may not mirror
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5360 * the real header value, and we note that we know the response's length.
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5361 * FIXME: should we parse anyway and return an error on chunked encoding ?
5362 */
5363 if (txn->meth == HTTP_METH_HEAD ||
5364 (txn->status >= 100 && txn->status < 200) ||
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5365 txn->status == 204 || txn->status == 304) {
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5366 msg->flags |= HTTP_MSGF_XFER_LEN;
Willy Tarreau91015352012-11-27 07:31:33 +0100[diff] [blame]5367 s->comp_algo = NULL;
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5368 goto skip_content_length;
5369 }
5370
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5371 use_close_only = 0;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5372 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5373 while ((msg->flags & HTTP_MSGF_VER_11) &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5374 http_find_header2("Transfer-Encoding", 17, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5375 if (ctx.vlen == 7 && strncasecmp(ctx.line + ctx.val, "chunked", 7) == 0)
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5376 msg->flags |= (HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
5377 else if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5378 /* bad transfer-encoding (chunked followed by something else) */
5379 use_close_only = 1;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5380 msg->flags &= ~(HTTP_MSGF_TE_CHNK | HTTP_MSGF_XFER_LEN);
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5381 break;
5382 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5383 }
5384
5385 /* FIXME: below we should remove the content-length header(s) in case of chunked encoding */
5386 ctx.idx = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5387 while (!(msg->flags & HTTP_MSGF_TE_CHNK) && !use_close_only &&
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5388 http_find_header2("Content-Length", 14, rep->buf->p, &txn->hdr_idx, &ctx)) {
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5389 signed long long cl;
5390
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5391 if (!ctx.vlen) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5392 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5393 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5394 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5395
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5396 if (strl2llrc(ctx.line + ctx.val, ctx.vlen, &cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5397 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5398 goto hdr_response_bad; /* parse failure */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5399 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5400
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5401 if (cl < 0) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5402 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5403 goto hdr_response_bad;
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5404 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5405
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5406 if ((msg->flags & HTTP_MSGF_CNT_LEN) && (msg->chunk_len != cl)) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5407 msg->err_pos = ctx.line + ctx.val - rep->buf->p;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5408 goto hdr_response_bad; /* already specified, was different */
Willy Tarreauad14f752011-09-02 20:33:27 +0200[diff] [blame]5409 }
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5410
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5411 msg->flags |= HTTP_MSGF_CNT_LEN | HTTP_MSGF_XFER_LEN;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5412 msg->body_len = msg->chunk_len = cl;
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5413 }
5414
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5415 if (s->fe->comp || s->be->comp)
5416 select_compression_response_header(s, rep->buf);
5417
Willy Tarreaue8e785b2009-12-26 15:34:26 +0100[diff] [blame]5418 /* FIXME: we should also implement the multipart/byterange method.
5419 * For now on, we resort to close mode in this case (unknown length).
5420 */
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5421skip_content_length:
Willy Tarreaub8c82c22009-10-18 23:45:12 +0200[diff] [blame]5422
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5423 /* end of job, return OK */
5424 rep->analysers &= ~an_bit;
5425 rep->analyse_exp = TICK_ETERNITY;
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5426 channel_auto_close(rep);
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5427 return 1;
5428}
5429
5430/* This function performs all the processing enabled for the current response.
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5431 * It normally returns 1 unless it wants to break. It relies on buffers flags,
5432 * and updates t->rep->analysers. It might make sense to explode it into several
5433 * other functions. It works like process_request (see indications above).
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5434 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5435int 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]5436{
5437 struct http_txn *txn = &t->txn;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5438 struct http_msg *msg = &txn->rsp;
5439 struct proxy *cur_proxy;
Willy Tarreauf4f04122010-01-28 18:10:50 +0100[diff] [blame]5440 struct cond_wordlist *wl;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5441 struct http_res_rule *http_res_last_rule = NULL;
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5442
Willy Tarreau02d6cfc2012-03-01 18:19:58 +0100[diff] [blame]5443 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]5444 now_ms, __FUNCTION__,
5445 t,
5446 rep,
5447 rep->rex, rep->wex,
5448 rep->flags,
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]5449 rep->buf->i,
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5450 rep->analysers);
5451
Willy Tarreau655dce92009-11-08 13:10:58 +0100[diff] [blame]5452 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) /* we need more data */
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5453 return 0;
5454
5455 rep->analysers &= ~an_bit;
5456 rep->analyse_exp = TICK_ETERNITY;
5457
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5458 /* Now we have to check if we need to modify the Connection header.
5459 * This is more difficult on the response than it is on the request,
5460 * because we can have two different HTTP versions and we don't know
5461 * how the client will interprete a response. For instance, let's say
5462 * that the client sends a keep-alive request in HTTP/1.0 and gets an
5463 * HTTP/1.1 response without any header. Maybe it will bound itself to
5464 * HTTP/1.0 because it only knows about it, and will consider the lack
5465 * of header as a close, or maybe it knows HTTP/1.1 and can consider
5466 * the lack of header as a keep-alive. Thus we will use two flags
5467 * indicating how a request MAY be understood by the client. In case
5468 * of multiple possibilities, we'll fix the header to be explicit. If
5469 * ambiguous cases such as both close and keepalive are seen, then we
5470 * will fall back to explicit close. Note that we won't take risks with
5471 * HTTP/1.0 clients which may not necessarily understand keep-alive.
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5472 * See doc/internals/connection-header.txt for the complete matrix.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5473 */
5474
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5475 if (unlikely((txn->meth == HTTP_METH_CONNECT && txn->status == 200) ||
5476 txn->status == 101)) {
5477 /* Either we've established an explicit tunnel, or we're
5478 * switching the protocol. In both cases, we're very unlikely
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5479 * to understand the next protocols. We have to switch to tunnel
5480 * mode, so that we transfer the request and responses then let
5481 * this protocol pass unmodified. When we later implement specific
5482 * parsers for such protocols, we'll want to check the Upgrade
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5483 * header which contains information about that protocol for
5484 * responses with status 101 (eg: see RFC2817 about TLS).
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5485 */
5486 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_TUN;
5487 }
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5488 else if ((txn->status >= 200) && !(txn->flags & TX_HDR_CONN_PRS) &&
5489 ((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN ||
5490 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5491 int to_del = 0;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5492
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5493 /* on unknown transfer length, we must close */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5494 if (!(msg->flags & HTTP_MSGF_XFER_LEN) &&
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5495 (txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN)
5496 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_CLO;
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5497
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5498 /* now adjust header transformations depending on current state */
5499 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN ||
5500 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_CLO) {
5501 to_del |= 2; /* remove "keep-alive" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5502 if (!(msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5503 to_del |= 1; /* remove "close" for HTTP/1.0 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5504 }
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5505 else { /* SCL / KAL */
5506 to_del |= 1; /* remove "close" on any response */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5507 if (txn->req.flags & msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5508 to_del |= 2; /* remove "keep-alive" on pure 1.1 responses */
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5509 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5510
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5511 /* Parse and remove some headers from the connection header */
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5512 http_parse_connection_header(txn, msg, to_del);
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5513
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5514 /* Some keep-alive responses are converted to Server-close if
5515 * the server wants to close.
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5516 */
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5517 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL) {
5518 if ((txn->flags & TX_HDR_CONN_CLO) ||
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5519 (!(txn->flags & TX_HDR_CONN_KAL) && !(msg->flags & HTTP_MSGF_VER_11)))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5520 txn->flags = (txn->flags & ~TX_CON_WANT_MSK) | TX_CON_WANT_SCL;
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5521 }
Willy Tarreau5b154472009-12-21 20:11:07 +0100[diff] [blame]5522 }
5523
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5524 /* we want to have the response time before we start processing it */
5525 t->logs.t_data = tv_ms_elapsed(&t->logs.tv_accept, &now);
5526
Willy Tarreaub37c27e2009-10-18 22:53:08 +0200[diff] [blame]5527 if (1) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5528 /*
5529 * 3: we will have to evaluate the filters.
5530 * As opposed to version 1.2, now they will be evaluated in the
5531 * filters order and not in the header order. This means that
5532 * each filter has to be validated among all headers.
5533 *
5534 * Filters are tried with ->be first, then with ->fe if it is
5535 * different from ->be.
5536 */
5537
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5538 cur_proxy = t->be;
5539 while (1) {
5540 struct proxy *rule_set = cur_proxy;
5541
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]5542 /* evaluate http-response rules */
5543 if (!http_res_last_rule)
5544 http_res_last_rule = http_res_get_intercept_rule(cur_proxy, &cur_proxy->http_res_rules, t, txn);
5545
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5546 /* try headers filters */
5547 if (rule_set->rsp_exp != NULL) {
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5548 if (apply_filters_to_response(t, rep, rule_set) < 0) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5549 return_bad_resp:
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5550 if (objt_server(t->target)) {
5551 objt_server(t->target)->counters.failed_resp++;
5552 health_adjust(objt_server(t->target), HANA_STATUS_HTTP_RSP);
Krzysztof Piotr Oledzki97f07b82009-12-15 22:31:24 +0100[diff] [blame]5553 }
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5554 t->be->be_counters.failed_resp++;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5555 return_srv_prx_502:
Willy Tarreau2df28e82008-08-17 15:20:19 +0200[diff] [blame]5556 rep->analysers = 0;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5557 txn->status = 502;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5558 t->logs.t_data = -1; /* was not a valid response */
Willy Tarreauc88ea682009-12-29 14:56:36 +0100[diff] [blame]5559 rep->prod->flags |= SI_FL_NOLINGER;
Willy Tarreau9dab5fc2012-05-07 11:56:55 +0200[diff] [blame]5560 bi_erase(rep);
Willy Tarreau783f2582012-09-04 12:19:04 +0200[diff] [blame]5561 stream_int_retnclose(rep->cons, http_error_message(t, HTTP_ERR_502));
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5562 if (!(t->flags & SN_ERR_MASK))
5563 t->flags |= SN_ERR_PRXCOND;
5564 if (!(t->flags & SN_FINST_MASK))
5565 t->flags |= SN_FINST_H;
Willy Tarreaudafde432008-08-17 01:00:46 +0200[diff] [blame]5566 return 0;
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5567 }
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5568 }
Willy Tarreau21d2af32008-02-14 20:25:24 +0100[diff] [blame]5569
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5570 /* has the response been denied ? */
5571 if (txn->flags & TX_SVDENY) {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5572 if (objt_server(t->target))
5573 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5574
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5575 t->be->be_counters.denied_resp++;
5576 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5577 if (t->listener->counters)
5578 t->listener->counters->denied_resp++;
5579
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5580 goto return_srv_prx_502;
Willy Tarreau51406232008-03-10 22:04:20 +0100[diff] [blame]5581 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5582
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5583 /* add response headers from the rule sets in the same order */
Willy Tarreaudeb9ed82010-01-03 21:03:22 +0100[diff] [blame]5584 list_for_each_entry(wl, &rule_set->rsp_add, list) {
Willy Tarreau816b9792009-09-15 21:25:21 +0200[diff] [blame]5585 if (txn->status < 200)
5586 break;
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]5587 if (wl->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]5588 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]5589 ret = acl_pass(ret);
5590 if (((struct acl_cond *)wl->cond)->pol == ACL_COND_UNLESS)
5591 ret = !ret;
5592 if (!ret)
5593 continue;
5594 }
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5595 if (unlikely(http_header_add_tail(&txn->rsp, &txn->hdr_idx, wl->s) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5596 goto return_bad_resp;
Willy Tarreau0bbc3cf2006-10-15 14:26:02 +0200[diff] [blame]5597 }
5598
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5599 /* check whether we're already working on the frontend */
5600 if (cur_proxy == t->fe)
5601 break;
5602 cur_proxy = t->fe;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5603 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5604
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5605 /*
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5606 * We may be facing a 100-continue response, in which case this
5607 * is not the right response, and we're waiting for the next one.
5608 * Let's allow this response to go to the client and wait for the
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5609 * next one.
5610 */
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5611 if (unlikely(txn->status == 100)) {
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5612 hdr_idx_init(&txn->hdr_idx);
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5613 msg->next -= channel_forward(rep, msg->next);
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5614 msg->msg_state = HTTP_MSG_RPBEFORE;
5615 txn->status = 0;
Willy Tarreau7959a552013-09-23 16:44:27 +0200[diff] [blame]5616 t->logs.t_data = -1; /* was not a response yet */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5617 rep->analysers |= AN_RES_WAIT_HTTP | an_bit;
5618 return 1;
5619 }
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5620 else if (unlikely(txn->status < 200))
5621 goto skip_header_mangling;
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5622
5623 /* we don't have any 1xx status code now */
5624
5625 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5626 * 4: check for server cookie.
5627 */
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5628 if (t->be->cookie_name || t->be->appsession_name || t->fe->capture_name ||
5629 (t->be->options & PR_O_CHK_CACHE))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5630 manage_server_side_cookies(t, rep);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5631
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5632
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5633 /*
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5634 * 5: check for cache-control or pragma headers if required.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5635 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5636 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]5637 check_response_for_cacheability(t, rep);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5638
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5639 /*
5640 * 6: add server cookie in the response if needed
5641 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5642 if (objt_server(t->target) && (t->be->ck_opts & PR_CK_INS) &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5643 !((txn->flags & TX_SCK_FOUND) && (t->be->ck_opts & PR_CK_PSV)) &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5644 (!(t->flags & SN_DIRECT) ||
5645 ((t->be->cookie_maxidle || txn->cookie_last_date) &&
5646 (!txn->cookie_last_date || (txn->cookie_last_date - date.tv_sec) < 0)) ||
5647 (t->be->cookie_maxlife && !txn->cookie_first_date) || // set the first_date
5648 (!t->be->cookie_maxlife && txn->cookie_first_date)) && // remove the first_date
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5649 (!(t->be->ck_opts & PR_CK_POST) || (txn->meth == HTTP_METH_POST)) &&
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]5650 !(t->flags & SN_IGNORE_PRST)) {
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5651 /* the server is known, it's not the one the client requested, or the
5652 * cookie's last seen date needs to be refreshed. We have to
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5653 * insert a set-cookie here, except if we want to insert only on POST
5654 * requests and this one isn't. Note that servers which don't have cookies
5655 * (eg: some backup servers) will return a full cookie removal request.
5656 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5657 if (!objt_server(t->target)->cookie) {
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5658 chunk_printf(&trash,
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5659 "Set-Cookie: %s=; Expires=Thu, 01-Jan-1970 00:00:01 GMT; path=/",
5660 t->be->cookie_name);
5661 }
5662 else {
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5663 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]5664
5665 if (t->be->cookie_maxidle || t->be->cookie_maxlife) {
5666 /* emit last_date, which is mandatory */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5667 trash.str[trash.len++] = COOKIE_DELIM_DATE;
5668 s30tob64((date.tv_sec+3) >> 2, trash.str + trash.len);
5669 trash.len += 5;
5670
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5671 if (t->be->cookie_maxlife) {
5672 /* emit first_date, which is either the original one or
5673 * the current date.
5674 */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5675 trash.str[trash.len++] = COOKIE_DELIM_DATE;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5676 s30tob64(txn->cookie_first_date ?
5677 txn->cookie_first_date >> 2 :
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5678 (date.tv_sec+3) >> 2, trash.str + trash.len);
5679 trash.len += 5;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5680 }
5681 }
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5682 chunk_appendf(&trash, "; path=/");
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5683 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5684
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5685 if (t->be->cookie_domain)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5686 chunk_appendf(&trash, "; domain=%s", t->be->cookie_domain);
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5687
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5688 if (t->be->ck_opts & PR_CK_HTTPONLY)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5689 chunk_appendf(&trash, "; HttpOnly");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5690
5691 if (t->be->ck_opts & PR_CK_SECURE)
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5692 chunk_appendf(&trash, "; Secure");
Willy Tarreau4992dd22012-05-31 21:02:17 +0200[diff] [blame]5693
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]5694 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]5695 goto return_bad_resp;
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5696
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5697 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5698 if (objt_server(t->target)->cookie && (t->flags & SN_DIRECT))
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]5699 /* the server did not change, only the date was updated */
5700 txn->flags |= TX_SCK_UPDATED;
5701 else
5702 txn->flags |= TX_SCK_INSERTED;
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5703
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5704 /* Here, we will tell an eventual cache on the client side that we don't
5705 * want it to cache this reply because HTTP/1.0 caches also cache cookies !
5706 * Some caches understand the correct form: 'no-cache="set-cookie"', but
5707 * others don't (eg: apache <= 1.3.26). So we use 'private' instead.
5708 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]5709 if ((t->be->ck_opts & PR_CK_NOC) && (txn->flags & TX_CACHEABLE)) {
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5710
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5711 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
5712
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5713 if (unlikely(http_header_add_tail2(&txn->rsp, &txn->hdr_idx,
Willy Tarreau58cc8722009-12-28 06:57:33 +0100[diff] [blame]5714 "Cache-control: private", 22) < 0))
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5715 goto return_bad_resp;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5716 }
5717 }
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5718
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5719 /*
5720 * 7: check if result will be cacheable with a cookie.
5721 * We'll block the response if security checks have caught
5722 * nasty things such as a cacheable cookie.
5723 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]5724 if (((txn->flags & (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) ==
5725 (TX_CACHEABLE | TX_CACHE_COOK | TX_SCK_PRESENT)) &&
Willy Tarreau63c9e5f2009-12-22 16:01:27 +0100[diff] [blame]5726 (t->be->options & PR_O_CHK_CACHE)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5727
5728 /* we're in presence of a cacheable response containing
5729 * a set-cookie header. We'll block it as requested by
5730 * the 'checkcache' option, and send an alert.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5731 */
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5732 if (objt_server(t->target))
5733 objt_server(t->target)->counters.failed_secu++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5734
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]5735 t->be->be_counters.denied_resp++;
5736 t->fe->fe_counters.denied_resp++;
Krzysztof Piotr Oledzkiaeebf9b2009-10-04 15:43:17 +0200[diff] [blame]5737 if (t->listener->counters)
5738 t->listener->counters->denied_resp++;
5739
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5740 Alert("Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5741 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5742 send_log(t->be, LOG_ALERT,
5743 "Blocking cacheable cookie in response from instance %s, server %s.\n",
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]5744 t->be->id, objt_server(t->target) ? objt_server(t->target)->id : "<dispatch>");
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5745 goto return_srv_prx_502;
5746 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5747
5748 /*
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5749 * 8: adjust "Connection: close" or "Connection: keep-alive" if needed.
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5750 * If an "Upgrade" token is found, the header is left untouched in order
5751 * not to have to deal with some client bugs : some of them fail an upgrade
5752 * if anything but "Upgrade" is present in the Connection header.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5753 */
Willy Tarreau50fc7772012-11-11 22:19:57 +0100[diff] [blame]5754 if (!(txn->flags & TX_HDR_CONN_UPG) &&
5755 (((txn->flags & TX_CON_WANT_MSK) != TX_CON_WANT_TUN) ||
5756 ((t->fe->options|t->be->options) & PR_O_HTTP_CLOSE))) {
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5757 unsigned int want_flags = 0;
5758
5759 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5760 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL) {
5761 /* we want a keep-alive response here. Keep-alive header
5762 * required if either side is not 1.1.
5763 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5764 if (!(txn->req.flags & msg->flags & HTTP_MSGF_VER_11))
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5765 want_flags |= TX_CON_KAL_SET;
5766 }
5767 else {
5768 /* we want a close response here. Close header required if
5769 * the server is 1.1, regardless of the client.
5770 */
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5771 if (msg->flags & HTTP_MSGF_VER_11)
Willy Tarreau60466522010-01-18 19:08:45 +0100[diff] [blame]5772 want_flags |= TX_CON_CLO_SET;
5773 }
5774
5775 if (want_flags != (txn->flags & (TX_CON_CLO_SET|TX_CON_KAL_SET)))
Willy Tarreau6acf7c92012-03-09 13:30:45 +0100[diff] [blame]5776 http_change_connection_header(txn, msg, want_flags);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5777 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5778
Willy Tarreau5843d1a2010-02-01 15:13:32 +0100[diff] [blame]5779 skip_header_mangling:
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5780 if ((msg->flags & HTTP_MSGF_XFER_LEN) ||
Willy Tarreaudc008c52010-02-01 16:20:08 +0100[diff] [blame]5781 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_TUN)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5782 rep->analysers |= AN_RES_HTTP_XFER_BODY;
Willy Tarreau03945942009-12-22 16:50:27 +0100[diff] [blame]5783
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5784 /*************************************************************
5785 * OK, that's finished for the headers. We have done what we *
5786 * could. Let's switch to the DATA state. *
5787 ************************************************************/
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]5788
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5789 /* if the user wants to log as soon as possible, without counting
5790 * bytes from the server, then this is the right moment. We have
5791 * to temporarily assign bytes_out to log what we currently have.
5792 */
Willy Tarreaud79a3b22012-12-28 09:40:16 +0100[diff] [blame]5793 if (!LIST_ISEMPTY(&t->fe->logformat) && !(t->logs.logwait & LW_BYTES)) {
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5794 t->logs.t_close = t->logs.t_data; /* to get a valid end date */
5795 t->logs.bytes_out = txn->rsp.eoh;
Willy Tarreaua5555ec2008-11-30 19:02:32 +0100[diff] [blame]5796 t->do_log(t);
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5797 t->logs.bytes_out = 0;
5798 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5799
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5800 /* Note: we must not try to cheat by jumping directly to DATA,
5801 * otherwise we would not let the client side wake up.
5802 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5803
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5804 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5805 }
Willy Tarreaue3fa6e52010-01-04 22:57:43 +0100[diff] [blame]5806 return 1;
Willy Tarreauf5483bf2008-08-14 18:35:40 +0200[diff] [blame]5807}
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]5808
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5809/* This function is an analyser which forwards response body (including chunk
5810 * sizes if any). It is called as soon as we must forward, even if we forward
5811 * zero byte. The only situation where it must not be called is when we're in
5812 * tunnel mode and we want to forward till the close. It's used both to forward
5813 * remaining data and to resync after end of body. It expects the msg_state to
5814 * be between MSG_BODY and MSG_DONE (inclusive). It returns zero if it needs to
5815 * 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]5816 * When in MSG_DATA or MSG_TRAILERS, it will automatically forward chunk_len
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]5817 * bytes of pending data + the headers if not already done (between sol and sov).
5818 * 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]5819 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]5820int http_response_forward_body(struct session *s, struct channel *res, int an_bit)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5821{
5822 struct http_txn *txn = &s->txn;
5823 struct http_msg *msg = &s->txn.rsp;
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5824 unsigned int bytes;
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5825 static struct buffer *tmpbuf = NULL;
5826 int compressing = 0;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5827 int consumed_data = 0;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5828 int ret;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5829
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5830 if (unlikely(msg->msg_state < HTTP_MSG_BODY))
5831 return 0;
5832
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5833 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]5834 ((res->flags & CF_SHUTW) && (res->to_forward || res->buf->o)) ||
Willy Tarreau6c2cbe12010-01-03 17:07:49 +0100[diff] [blame]5835 !s->req->analysers) {
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5836 /* Output closed while we were sending data. We must abort and
5837 * wake the other side up.
5838 */
5839 msg->msg_state = HTTP_MSG_ERROR;
5840 http_resync_states(s);
Willy Tarreau082b01c2010-01-02 23:58:04 +0100[diff] [blame]5841 return 1;
5842 }
5843
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5844 /* in most states, we should abort in case of early close */
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5845 channel_auto_close(res);
Willy Tarreaub608feb2010-01-02 22:47:18 +0100[diff] [blame]5846
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5847 /* this is the first time we need the compression buffer */
5848 if (s->comp_algo != NULL && tmpbuf == NULL) {
5849 if ((tmpbuf = pool_alloc2(pool2_buffer)) == NULL)
5850 goto aborted_xfer; /* no memory */
5851 }
5852
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5853 if (msg->msg_state < HTTP_MSG_CHUNK_SIZE) {
Willy Tarreaufa4a03c2012-03-09 21:28:54 +0100[diff] [blame]5854 /* we have msg->sov which points to the first byte of message body.
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5855 * rep->buf.p still points to the beginning of the message and msg->sol
5856 * is still null. We forward the headers, we don't need them.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5857 */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5858 channel_forward(res, msg->sov);
5859 msg->next = 0;
5860 msg->sov = 0;
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5861
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]5862 if (msg->flags & HTTP_MSGF_TE_CHNK)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5863 msg->msg_state = HTTP_MSG_CHUNK_SIZE;
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5864 else
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5865 msg->msg_state = HTTP_MSG_DATA;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5866 }
5867
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5868 if (s->comp_algo != NULL) {
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5869 ret = http_compression_buffer_init(s, res->buf, tmpbuf); /* init a buffer with headers */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5870 if (ret < 0)
5871 goto missing_data; /* not enough spaces in buffers */
5872 compressing = 1;
5873 }
5874
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5875 while (1) {
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5876 http_silent_debug(__LINE__, s);
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]5877 /* we may have some data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5878 if (s->comp_algo == NULL) {
5879 bytes = msg->sov - msg->sol;
5880 if (msg->chunk_len || bytes) {
5881 msg->sol = msg->sov;
5882 msg->next -= bytes; /* will be forwarded */
5883 msg->chunk_len += bytes;
5884 msg->chunk_len -= channel_forward(res, msg->chunk_len);
5885 }
Willy Tarreau638cd022010-01-03 07:42:04 +0100[diff] [blame]5886 }
5887
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5888 switch (msg->msg_state - HTTP_MSG_DATA) {
5889 case HTTP_MSG_DATA - HTTP_MSG_DATA: /* must still forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5890 if (compressing) {
5891 consumed_data += ret = http_compression_buffer_add_data(s, res->buf, tmpbuf);
5892 if (ret < 0)
5893 goto aborted_xfer;
5894 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5895
5896 if (res->to_forward || msg->chunk_len)
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]5897 goto missing_data;
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5898
5899 /* nothing left to forward */
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5900 if (msg->flags & HTTP_MSGF_TE_CHNK) {
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5901 msg->msg_state = HTTP_MSG_CHUNK_CRLF;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5902 } else {
Willy Tarreaucaabe412010-01-03 23:08:28 +0100[diff] [blame]5903 msg->msg_state = HTTP_MSG_DONE;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5904 if (compressing && consumed_data) {
5905 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5906 compressing = 0;
5907 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5908 break;
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5909 }
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5910 /* fall through for HTTP_MSG_CHUNK_CRLF */
5911
5912 case HTTP_MSG_CHUNK_CRLF - HTTP_MSG_DATA:
5913 /* we want the CRLF after the data */
5914
5915 ret = http_skip_chunk_crlf(msg);
5916 if (ret == 0)
5917 goto missing_data;
5918 else if (ret < 0) {
5919 if (msg->err_pos >= 0)
5920 http_capture_bad_message(&s->be->invalid_rep, s, msg, HTTP_MSG_CHUNK_CRLF, s->fe);
5921 goto return_bad_res;
5922 }
5923 /* skipping data in buffer for compression */
5924 if (compressing) {
5925 b_adv(res->buf, msg->next);
5926 msg->next = 0;
5927 msg->sov = 0;
5928 msg->sol = 0;
5929 }
5930 /* we're in MSG_CHUNK_SIZE now, fall through */
5931
5932 case HTTP_MSG_CHUNK_SIZE - HTTP_MSG_DATA:
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]5933 /* read the chunk size and assign it to ->chunk_len, then
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]5934 * set ->sov and ->next to point to the body and switch to DATA or
5935 * TRAILERS state.
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5936 */
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5937
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5938 ret = http_parse_chunk_size(msg);
Willy Tarreau54d23df2012-10-25 19:04:45 +0200[diff] [blame]5939 if (ret == 0)
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5940 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5941 else if (ret < 0) {
5942 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5943 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]5944 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5945 }
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]5946 if (compressing) {
5947 if (likely(msg->chunk_len > 0)) {
5948 /* skipping data if we are in compression mode */
5949 b_adv(res->buf, msg->next);
5950 msg->next = 0;
5951 msg->sov = 0;
5952 msg->sol = 0;
5953 } else {
5954 if (consumed_data) {
5955 http_compression_buffer_end(s, &res->buf, &tmpbuf, 1);
5956 compressing = 0;
5957 }
5958 }
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]5959 }
Willy Tarreau0161d622013-04-02 01:26:55 +0200[diff] [blame]5960 /* otherwise we're in HTTP_MSG_DATA or HTTP_MSG_TRAILERS state */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5961 break;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5962
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5963 case HTTP_MSG_TRAILERS - HTTP_MSG_DATA:
5964 ret = http_forward_trailers(msg);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]5965 if (ret == 0)
5966 goto missing_data;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5967 else if (ret < 0) {
5968 if (msg->err_pos >= 0)
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]5969 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]5970 goto return_bad_res;
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]5971 }
William Lallemand00bf1de2012-11-22 17:55:14 +0100[diff] [blame]5972 if (s->comp_algo != NULL) {
5973 /* forwarding trailers */
5974 channel_forward(res, msg->next);
5975 msg->next = 0;
5976 }
Willy Tarreau2d43e182013-04-03 00:22:25 +0200[diff] [blame]5977 /* we're in HTTP_MSG_DONE now, but we might still have
5978 * some data pending, so let's loop over once.
5979 */
5980 break;
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5981
5982 default:
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5983 /* other states, DONE...TUNNEL */
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]5984
5985 ret = msg->msg_state;
Willy Tarreau4fe41902010-06-07 22:27:41 +0200[diff] [blame]5986 /* for keep-alive we don't want to forward closes on DONE */
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]5987 if ((txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
5988 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]5989 channel_dont_close(res);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]5990 if (http_resync_states(s)) {
5991 http_silent_debug(__LINE__, s);
5992 /* some state changes occurred, maybe the analyser
5993 * was disabled too.
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]5994 */
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5995 if (unlikely(msg->msg_state == HTTP_MSG_ERROR)) {
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]5996 if (res->flags & CF_SHUTW) {
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]5997 /* response errors are most likely due to
5998 * the client aborting the transfer.
5999 */
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6000 goto aborted_xfer;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6001 }
Willy Tarreaue1582eb2010-12-12 13:10:11 +0100[diff] [blame]6002 if (msg->err_pos >= 0)
Willy Tarreaud655ffe2013-04-02 01:48:58 +0200[diff] [blame]6003 http_capture_bad_message(&s->be->invalid_rep, s, msg, ret, s->fe);
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6004 goto return_bad_res;
Willy Tarreau3fe693b2010-12-12 12:50:05 +0100[diff] [blame]6005 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6006 return 1;
Willy Tarreau5523b322009-12-29 12:05:52 +0100[diff] [blame]6007 }
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6008 return 0;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6009 }
6010 }
6011
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6012 missing_data:
William Lallemandbf3ae612012-11-19 12:35:37 +0100[diff] [blame]6013 if (compressing && consumed_data) {
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6014 http_compression_buffer_end(s, &res->buf, &tmpbuf, 0);
6015 compressing = 0;
6016 }
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6017
6018 if (res->flags & CF_SHUTW)
6019 goto aborted_xfer;
6020
6021 /* stop waiting for data if the input is closed before the end. If the
6022 * client side was already closed, it means that the client has aborted,
6023 * so we don't want to count this as a server abort. Otherwise it's a
6024 * server abort.
6025 */
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6026 if (res->flags & CF_SHUTR) {
Willy Tarreauf003d372012-11-26 13:35:37 +0100[diff] [blame]6027 if ((res->flags & CF_SHUTW_NOW) || (s->req->flags & CF_SHUTR))
6028 goto aborted_xfer;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6029 if (!(s->flags & SN_ERR_MASK))
6030 s->flags |= SN_ERR_SRVCL;
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6031 s->be->be_counters.srv_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6032 if (objt_server(s->target))
6033 objt_server(s->target)->counters.srv_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6034 goto return_bad_res_stats_ok;
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6035 }
Willy Tarreauf5c8bd62010-01-04 07:10:34 +0100[diff] [blame]6036
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6037 /* we need to obey the req analyser, so if it leaves, we must too */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6038 if (!s->req->analysers)
6039 goto return_bad_res;
6040
Willy Tarreauea953162012-05-18 23:41:28 +0200[diff] [blame]6041 /* forward any data pending between sol and sov */
William Lallemand82fe75c2012-10-23 10:25:10 +0200[diff] [blame]6042 if (s->comp_algo == NULL) {
6043 bytes = msg->sov - msg->sol;
6044 if (msg->chunk_len || bytes) {
6045 msg->sol = msg->sov;
6046 msg->next -= bytes; /* will be forwarded */
6047 msg->chunk_len += bytes;
6048 msg->chunk_len -= channel_forward(res, msg->chunk_len);
6049 }
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6050 }
6051
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6052 /* When TE: chunked is used, we need to get there again to parse remaining
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6053 * 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]6054 * Similarly, with keep-alive on the client side, we don't want to forward a
6055 * close.
6056 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6057 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo ||
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6058 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_KAL ||
6059 (txn->flags & TX_CON_WANT_MSK) == TX_CON_WANT_SCL)
Willy Tarreau8263d2b2012-08-28 00:06:31 +0200[diff] [blame]6060 channel_dont_close(res);
Willy Tarreau92aa1fa2010-08-28 18:57:20 +0200[diff] [blame]6061
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6062 /* We know that more data are expected, but we couldn't send more that
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6063 * 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]6064 * system knows it must not set a PUSH on this first part. Interactive
Willy Tarreau869fc1e2012-03-05 08:29:20 +0100[diff] [blame]6065 * modes are already handled by the stream sock layer. We must not do
6066 * this in content-length mode because it could present the MSG_MORE
6067 * flag with the last block of forwarded data, which would cause an
6068 * additional delay to be observed by the receiver.
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6069 */
Willy Tarreau08b4d792012-10-27 01:36:34 +0200[diff] [blame]6070 if ((msg->flags & HTTP_MSGF_TE_CHNK) || s->comp_algo)
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]6071 res->flags |= CF_EXPECT_MORE;
Willy Tarreau5c620922011-05-11 19:56:11 +0200[diff] [blame]6072
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6073 /* the session handler will take care of timeouts and errors */
Willy Tarreau610ecce2010-01-04 21:15:02 +0100[diff] [blame]6074 http_silent_debug(__LINE__, s);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6075 return 0;
6076
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6077 return_bad_res: /* let's centralize all bad responses */
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6078 s->be->be_counters.failed_resp++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6079 if (objt_server(s->target))
6080 objt_server(s->target)->counters.failed_resp++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6081
6082 return_bad_res_stats_ok:
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6083 txn->rsp.msg_state = HTTP_MSG_ERROR;
Willy Tarreau148d0992010-01-10 10:21:21 +0100[diff] [blame]6084 /* don't send any error message as we're in the body */
6085 stream_int_retnclose(res->cons, NULL);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6086 res->analysers = 0;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6087 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]6088 if (objt_server(s->target))
6089 health_adjust(objt_server(s->target), HANA_STATUS_HTTP_HDRRSP);
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6090
6091 if (!(s->flags & SN_ERR_MASK))
6092 s->flags |= SN_ERR_PRXCOND;
6093 if (!(s->flags & SN_FINST_MASK))
Willy Tarreau40dba092010-03-04 18:14:51 +0100[diff] [blame]6094 s->flags |= SN_FINST_D;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6095 return 0;
6096
6097 aborted_xfer:
6098 txn->rsp.msg_state = HTTP_MSG_ERROR;
6099 /* don't send any error message as we're in the body */
6100 stream_int_retnclose(res->cons, NULL);
6101 res->analysers = 0;
6102 s->req->analysers = 0; /* we're in data phase, we want to abort both directions */
6103
Willy Tarreau7d0aaf32011-03-10 23:25:56 +0100[diff] [blame]6104 s->fe->fe_counters.cli_aborts++;
6105 s->be->be_counters.cli_aborts++;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6106 if (objt_server(s->target))
6107 objt_server(s->target)->counters.cli_aborts++;
Willy Tarreaued2fd2d2010-12-29 11:23:27 +0100[diff] [blame]6108
6109 if (!(s->flags & SN_ERR_MASK))
6110 s->flags |= SN_ERR_CLICL;
6111 if (!(s->flags & SN_FINST_MASK))
6112 s->flags |= SN_FINST_D;
Willy Tarreaud98cf932009-12-27 22:54:55 +0100[diff] [blame]6113 return 0;
6114}
6115
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6116/* Iterate the same filter through all request headers.
6117 * Returns 1 if this filter can be stopped upon return, otherwise 0.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6118 * Since it can manage the switch to another backend, it updates the per-proxy
6119 * DENY stats.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6120 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6121int 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]6122{
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6123 char term;
6124 char *cur_ptr, *cur_end, *cur_next;
6125 int cur_idx, old_idx, last_hdr;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6126 struct http_txn *txn = &t->txn;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6127 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6128 int delta;
Willy Tarreau0f7562b2007-01-07 15:46:13 +0100[diff] [blame]6129
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6130 last_hdr = 0;
6131
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6132 cur_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6133 old_idx = 0;
6134
6135 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6136 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6137 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6138 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6139 (exp->action == ACT_ALLOW ||
6140 exp->action == ACT_DENY ||
6141 exp->action == ACT_TARPIT))
6142 return 0;
6143
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6144 cur_idx = txn->hdr_idx.v[old_idx].next;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6145 if (!cur_idx)
6146 break;
6147
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6148 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6149 cur_ptr = cur_next;
6150 cur_end = cur_ptr + cur_hdr->len;
6151 cur_next = cur_end + cur_hdr->cr + 1;
6152
6153 /* Now we have one header between cur_ptr and cur_end,
6154 * and the next header starts at cur_next.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6155 */
6156
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6157 /* The annoying part is that pattern matching needs
6158 * that we modify the contents to null-terminate all
6159 * strings before testing them.
6160 */
6161
6162 term = *cur_end;
6163 *cur_end = '\0';
6164
6165 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6166 switch (exp->action) {
6167 case ACT_SETBE:
6168 /* It is not possible to jump a second time.
6169 * FIXME: should we return an HTTP/500 here so that
6170 * the admin knows there's a problem ?
6171 */
6172 if (t->be != t->fe)
6173 break;
6174
6175 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6176 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6177 last_hdr = 1;
6178 break;
6179
6180 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6181 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6182 last_hdr = 1;
6183 break;
6184
6185 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6186 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6187 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6188 break;
6189
6190 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6191 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6192 last_hdr = 1;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6193 break;
6194
6195 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6196 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6197 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6198 /* FIXME: if the user adds a newline in the replacement, the
6199 * index will not be recalculated for now, and the new line
6200 * will not be counted as a new header.
6201 */
6202
6203 cur_end += delta;
6204 cur_next += delta;
6205 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6206 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6207 break;
6208
6209 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6210 delta = buffer_replace2(req->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6211 cur_next += delta;
6212
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6213 http_msg_move_end(&txn->req, delta);
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6214 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6215 txn->hdr_idx.used--;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6216 cur_hdr->len = 0;
6217 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6218 cur_idx = old_idx;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6219 break;
6220
6221 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6222 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6223 if (cur_end)
6224 *cur_end = term; /* restore the string terminator */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6225
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6226 /* keep the link from this header to next one in case of later
6227 * removal of next header.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6228 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6229 old_idx = cur_idx;
6230 }
6231 return 0;
6232}
6233
6234
6235/* Apply the filter to the request line.
6236 * Returns 0 if nothing has been done, 1 if the filter has been applied,
6237 * or -1 if a replacement resulted in an invalid request line.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6238 * Since it can manage the switch to another backend, it updates the per-proxy
6239 * DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6240 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6241int 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]6242{
6243 char term;
6244 char *cur_ptr, *cur_end;
6245 int done;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6246 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6247 int delta;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6248
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6249 if (unlikely(txn->flags & (TX_CLDENY | TX_CLTARPIT)))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6250 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6251 else if (unlikely(txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6252 (exp->action == ACT_ALLOW ||
6253 exp->action == ACT_DENY ||
6254 exp->action == ACT_TARPIT))
6255 return 0;
6256 else if (exp->action == ACT_REMOVE)
6257 return 0;
6258
6259 done = 0;
6260
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6261 cur_ptr = req->buf->p;
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6262 cur_end = cur_ptr + txn->req.sl.rq.l;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6263
6264 /* Now we have the request line between cur_ptr and cur_end */
6265
6266 /* The annoying part is that pattern matching needs
6267 * that we modify the contents to null-terminate all
6268 * strings before testing them.
6269 */
6270
6271 term = *cur_end;
6272 *cur_end = '\0';
6273
6274 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
6275 switch (exp->action) {
6276 case ACT_SETBE:
6277 /* It is not possible to jump a second time.
6278 * FIXME: should we return an HTTP/500 here so that
6279 * the admin knows there's a problem ?
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6280 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6281 if (t->be != t->fe)
6282 break;
6283
6284 /* Swithing Proxy */
Willy Tarreau1d0dfb12009-07-07 15:10:31 +0200[diff] [blame]6285 session_set_backend(t, (struct proxy *)exp->replace);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6286 done = 1;
6287 break;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6288
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6289 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6290 txn->flags |= TX_CLALLOW;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6291 done = 1;
6292 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6293
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6294 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6295 txn->flags |= TX_CLDENY;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6296 done = 1;
6297 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6298
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6299 case ACT_TARPIT:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6300 txn->flags |= TX_CLTARPIT;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6301 done = 1;
6302 break;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6303
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6304 case ACT_REPLACE:
6305 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]6306 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
6307 delta = buffer_replace2(req->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6308 /* FIXME: if the user adds a newline in the replacement, the
6309 * index will not be recalculated for now, and the new line
6310 * will not be counted as a new header.
6311 */
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6312
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6313 http_msg_move_end(&txn->req, delta);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6314 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]6315 cur_end = (char *)http_parse_reqline(&txn->req,
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6316 HTTP_MSG_RQMETH,
6317 cur_ptr, cur_end + 1,
6318 NULL, NULL);
6319 if (unlikely(!cur_end))
6320 return -1;
Willy Tarreaua496b602006-12-17 23:15:24 +0100[diff] [blame]6321
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6322 /* we have a full request and we know that we have either a CR
6323 * or an LF at <ptr>.
6324 */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6325 txn->meth = find_http_meth(cur_ptr, txn->req.sl.rq.m_l);
6326 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]6327 /* there is no point trying this regex on headers */
6328 return 1;
6329 }
6330 }
6331 *cur_end = term; /* restore the string terminator */
6332 return done;
6333}
Willy Tarreau97de6242006-12-27 17:18:38 +0100[diff] [blame]6334
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6335
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6336
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6337/*
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6338 * 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]6339 * 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]6340 * unparsable request. Since it can manage the switch to another backend, it
6341 * updates the per-proxy DENY stats.
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6342 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6343int apply_filters_to_request(struct session *s, struct channel *req, struct proxy *px)
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6344{
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6345 struct http_txn *txn = &s->txn;
6346 struct hdr_exp *exp;
6347
6348 for (exp = px->req_exp; exp; exp = exp->next) {
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6349 int ret;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6350
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6351 /*
6352 * The interleaving of transformations and verdicts
6353 * makes it difficult to decide to continue or stop
6354 * the evaluation.
6355 */
6356
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6357 if (txn->flags & (TX_CLDENY|TX_CLTARPIT))
6358 break;
6359
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]6360 if ((txn->flags & TX_CLALLOW) &&
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6361 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6362 exp->action == ACT_TARPIT || exp->action == ACT_PASS))
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6363 continue;
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6364
6365 /* if this filter had a condition, evaluate it now and skip to
6366 * next filter if the condition does not match.
6367 */
6368 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]6369 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]6370 ret = acl_pass(ret);
6371 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
6372 ret = !ret;
6373
6374 if (!ret)
6375 continue;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6376 }
6377
6378 /* Apply the filter to the request line. */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6379 ret = apply_filter_to_req_line(s, req, exp);
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6380 if (unlikely(ret < 0))
6381 return -1;
6382
6383 if (likely(ret == 0)) {
6384 /* The filter did not match the request, it can be
6385 * iterated through all headers.
6386 */
Willy Tarreau6c123b12010-01-28 20:22:06 +0100[diff] [blame]6387 apply_filter_to_req_headers(s, req, exp);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6388 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6389 }
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6390 return 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6391}
6392
6393
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6394
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6395/*
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6396 * Try to retrieve the server associated to the appsession.
6397 * If the server is found, it's assigned to the session.
6398 */
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6399void manage_client_side_appsession(struct session *t, const char *buf, int len) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6400 struct http_txn *txn = &t->txn;
6401 appsess *asession = NULL;
6402 char *sessid_temp = NULL;
6403
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6404 if (len > t->be->appsession_len) {
6405 len = t->be->appsession_len;
6406 }
6407
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6408 if (t->be->options2 & PR_O2_AS_REQL) {
6409 /* request-learn option is enabled : store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6410 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6411 /* 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]6412 pool_free2(apools.sessid, txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6413 }
6414
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6415 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6416 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6417 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6418 return;
6419 }
6420
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]6421 memcpy(txn->sessid, buf, len);
6422 txn->sessid[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6423 }
6424
6425 if ((sessid_temp = pool_alloc2(apools.sessid)) == NULL) {
6426 Alert("Not enough memory process_cli():asession->sessid:malloc().\n");
6427 send_log(t->be, LOG_ALERT, "Not enough memory process_cli():asession->sessid:malloc().\n");
6428 return;
6429 }
6430
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6431 memcpy(sessid_temp, buf, len);
6432 sessid_temp[len] = 0;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6433
6434 asession = appsession_hash_lookup(&(t->be->htbl_proxy), sessid_temp);
6435 /* free previously allocated memory */
6436 pool_free2(apools.sessid, sessid_temp);
6437
6438 if (asession != NULL) {
6439 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
6440 if (!(t->be->options2 & PR_O2_AS_REQL))
6441 asession->request_count++;
6442
6443 if (asession->serverid != NULL) {
6444 struct server *srv = t->be->srv;
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]6445
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6446 while (srv) {
6447 if (strcmp(srv->id, asession->serverid) == 0) {
Willy Tarreau4de91492010-01-22 19:10:05 +0100[diff] [blame]6448 if ((srv->state & SRV_RUNNING) ||
6449 (t->be->options & PR_O_PERSIST) ||
6450 (t->flags & SN_FORCE_PRST)) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6451 /* we found the server and it's usable */
6452 txn->flags &= ~TX_CK_MASK;
Willy Tarreau2a6d88d2010-01-24 13:10:43 +0100[diff] [blame]6453 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6454 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6455 t->target = &srv->obj_type;
Willy Tarreau664beb82011-03-10 11:38:29 +0100[diff] [blame]6456
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6457 break;
6458 } else {
6459 txn->flags &= ~TX_CK_MASK;
6460 txn->flags |= TX_CK_DOWN;
6461 }
6462 }
6463 srv = srv->next;
6464 }
6465 }
6466 }
6467}
6468
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6469/* Find the end of a cookie value contained between <s> and <e>. It works the
6470 * same way as with headers above except that the semi-colon also ends a token.
6471 * See RFC2965 for more information. Note that it requires a valid header to
6472 * return a valid result.
6473 */
6474char *find_cookie_value_end(char *s, const char *e)
6475{
6476 int quoted, qdpair;
6477
6478 quoted = qdpair = 0;
6479 for (; s < e; s++) {
6480 if (qdpair) qdpair = 0;
6481 else if (quoted) {
6482 if (*s == '\\') qdpair = 1;
6483 else if (*s == '"') quoted = 0;
6484 }
6485 else if (*s == '"') quoted = 1;
6486 else if (*s == ',' || *s == ';') return s;
6487 }
6488 return s;
6489}
6490
6491/* Delete a value in a header between delimiters <from> and <next> in buffer
6492 * <buf>. The number of characters displaced is returned, and the pointer to
6493 * the first delimiter is updated if required. The function tries as much as
6494 * possible to respect the following principles :
6495 * - replace <from> delimiter by the <next> one unless <from> points to a
6496 * colon, in which case <next> is simply removed
6497 * - set exactly one space character after the new first delimiter, unless
6498 * there are not enough characters in the block being moved to do so.
6499 * - remove unneeded spaces before the previous delimiter and after the new
6500 * one.
6501 *
6502 * It is the caller's responsibility to ensure that :
6503 * - <from> points to a valid delimiter or the colon ;
6504 * - <next> points to a valid delimiter or the final CR/LF ;
6505 * - there are non-space chars before <from> ;
6506 * - there is a CR/LF at or after <next>.
6507 */
Willy Tarreauaf819352012-08-27 22:08:00 +0200[diff] [blame]6508int del_hdr_value(struct buffer *buf, char **from, char *next)
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6509{
6510 char *prev = *from;
6511
6512 if (*prev == ':') {
6513 /* We're removing the first value, preserve the colon and add a
6514 * space if possible.
6515 */
6516 if (!http_is_crlf[(unsigned char)*next])
6517 next++;
6518 prev++;
6519 if (prev < next)
6520 *prev++ = ' ';
6521
6522 while (http_is_spht[(unsigned char)*next])
6523 next++;
6524 } else {
6525 /* Remove useless spaces before the old delimiter. */
6526 while (http_is_spht[(unsigned char)*(prev-1)])
6527 prev--;
6528 *from = prev;
6529
6530 /* copy the delimiter and if possible a space if we're
6531 * not at the end of the line.
6532 */
6533 if (!http_is_crlf[(unsigned char)*next]) {
6534 *prev++ = *next++;
6535 if (prev + 1 < next)
6536 *prev++ = ' ';
6537 while (http_is_spht[(unsigned char)*next])
6538 next++;
6539 }
6540 }
6541 return buffer_replace2(buf, prev, next, NULL, 0);
6542}
6543
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]6544/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]6545 * Manage client-side cookie. It can impact performance by about 2% so it is
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6546 * desirable to call it only when needed. This code is quite complex because
6547 * of the multiple very crappy and ambiguous syntaxes we have to support. it
6548 * highly recommended not to touch this part without a good reason !
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6549 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6550void manage_client_side_cookies(struct session *t, struct channel *req)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6551{
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6552 struct http_txn *txn = &t->txn;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6553 int preserve_hdr;
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]6554 int cur_idx, old_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6555 char *hdr_beg, *hdr_end, *hdr_next, *del_from;
6556 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6557
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6558 /* Iterate through the headers, we start with the start line. */
Willy Tarreau83969f42007-01-22 08:55:47 +0100[diff] [blame]6559 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6560 hdr_next = req->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6561
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6562 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6563 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6564 int val;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6565
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6566 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6567 hdr_beg = hdr_next;
6568 hdr_end = hdr_beg + cur_hdr->len;
6569 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6570
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6571 /* We have one full header between hdr_beg and hdr_end, and the
6572 * next header starts at hdr_next. We're only interested in
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6573 * "Cookie:" headers.
6574 */
6575
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6576 val = http_header_match2(hdr_beg, hdr_end, "Cookie", 6);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]6577 if (!val) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6578 old_idx = cur_idx;
6579 continue;
6580 }
6581
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6582 del_from = NULL; /* nothing to be deleted */
6583 preserve_hdr = 0; /* assume we may kill the whole header */
6584
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6585 /* Now look for cookies. Conforming to RFC2109, we have to support
6586 * attributes whose name begin with a '$', and associate them with
6587 * the right cookie, if we want to delete this cookie.
6588 * So there are 3 cases for each cookie read :
6589 * 1) it's a special attribute, beginning with a '$' : ignore it.
6590 * 2) it's a server id cookie that we *MAY* want to delete : save
6591 * some pointers on it (last semi-colon, beginning of cookie...)
6592 * 3) it's an application cookie : we *MAY* have to delete a previous
6593 * "special" cookie.
6594 * At the end of loop, if a "special" cookie remains, we may have to
6595 * remove it. If no application cookie persists in the header, we
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6596 * *MUST* delete it.
6597 *
6598 * Note: RFC2965 is unclear about the processing of spaces around
6599 * the equal sign in the ATTR=VALUE form. A careful inspection of
6600 * the RFC explicitly allows spaces before it, and not within the
6601 * tokens (attrs or values). An inspection of RFC2109 allows that
6602 * too but section 10.1.3 lets one think that spaces may be allowed
6603 * after the equal sign too, resulting in some (rare) buggy
6604 * implementations trying to do that. So let's do what servers do.
6605 * Latest ietf draft forbids spaces all around. Also, earlier RFCs
6606 * allowed quoted strings in values, with any possible character
6607 * after a backslash, including control chars and delimitors, which
6608 * causes parsing to become ambiguous. Browsers also allow spaces
6609 * within values even without quotes.
6610 *
6611 * We have to keep multiple pointers in order to support cookie
6612 * removal at the beginning, middle or end of header without
6613 * corrupting the header. All of these headers are valid :
6614 *
6615 * Cookie:NAME1=VALUE1;NAME2=VALUE2;NAME3=VALUE3\r\n
6616 * Cookie:NAME1=VALUE1;NAME2_ONLY ;NAME3=VALUE3\r\n
6617 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
6618 * | | | | | | | | |
6619 * | | | | | | | | hdr_end <--+
6620 * | | | | | | | +--> next
6621 * | | | | | | +----> val_end
6622 * | | | | | +-----------> val_beg
6623 * | | | | +--------------> equal
6624 * | | | +----------------> att_end
6625 * | | +---------------------> att_beg
6626 * | +--------------------------> prev
6627 * +--------------------------------> hdr_beg
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6628 */
6629
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6630 for (prev = hdr_beg + 6; prev < hdr_end; prev = next) {
6631 /* Iterate through all cookies on this line */
6632
6633 /* find att_beg */
6634 att_beg = prev + 1;
6635 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
6636 att_beg++;
6637
6638 /* find att_end : this is the first character after the last non
6639 * space before the equal. It may be equal to hdr_end.
6640 */
6641 equal = att_end = att_beg;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6642
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6643 while (equal < hdr_end) {
6644 if (*equal == '=' || *equal == ',' || *equal == ';')
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6645 break;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6646 if (http_is_spht[(unsigned char)*equal++])
6647 continue;
6648 att_end = equal;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6649 }
6650
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6651 /* here, <equal> points to '=', a delimitor or the end. <att_end>
6652 * is between <att_beg> and <equal>, both may be identical.
6653 */
6654
6655 /* look for end of cookie if there is an equal sign */
6656 if (equal < hdr_end && *equal == '=') {
6657 /* look for the beginning of the value */
6658 val_beg = equal + 1;
6659 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
6660 val_beg++;
6661
6662 /* find the end of the value, respecting quotes */
6663 next = find_cookie_value_end(val_beg, hdr_end);
6664
6665 /* make val_end point to the first white space or delimitor after the value */
6666 val_end = next;
6667 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
6668 val_end--;
6669 } else {
6670 val_beg = val_end = next = equal;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6671 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6672
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6673 /* We have nothing to do with attributes beginning with '$'. However,
6674 * they will automatically be removed if a header before them is removed,
6675 * since they're supposed to be linked together.
6676 */
6677 if (*att_beg == '$')
6678 continue;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6679
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6680 /* Ignore cookies with no equal sign */
6681 if (equal == next) {
6682 /* This is not our cookie, so we must preserve it. But if we already
6683 * scheduled another cookie for removal, we cannot remove the
6684 * complete header, but we can remove the previous block itself.
6685 */
6686 preserve_hdr = 1;
6687 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6688 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6689 val_end += delta;
6690 next += delta;
6691 hdr_end += delta;
6692 hdr_next += delta;
6693 cur_hdr->len += delta;
6694 http_msg_move_end(&txn->req, delta);
6695 prev = del_from;
6696 del_from = NULL;
6697 }
6698 continue;
Willy Tarreau305ae852010-01-03 19:45:54 +0100[diff] [blame]6699 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6700
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6701 /* if there are spaces around the equal sign, we need to
6702 * strip them otherwise we'll get trouble for cookie captures,
6703 * or even for rewrites. Since this happens extremely rarely,
6704 * it does not hurt performance.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6705 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6706 if (unlikely(att_end != equal || val_beg > equal + 1)) {
6707 int stripped_before = 0;
6708 int stripped_after = 0;
6709
6710 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6711 stripped_before = buffer_replace2(req->buf, att_end, equal, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6712 equal += stripped_before;
6713 val_beg += stripped_before;
6714 }
6715
6716 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6717 stripped_after = buffer_replace2(req->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6718 val_beg += stripped_after;
6719 stripped_before += stripped_after;
6720 }
6721
6722 val_end += stripped_before;
6723 next += stripped_before;
6724 hdr_end += stripped_before;
6725 hdr_next += stripped_before;
6726 cur_hdr->len += stripped_before;
6727 http_msg_move_end(&txn->req, stripped_before);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6728 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6729 /* now everything is as on the diagram above */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6730
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6731 /* First, let's see if we want to capture this cookie. We check
6732 * that we don't already have a client side cookie, because we
6733 * can only capture one. Also as an optimisation, we ignore
6734 * cookies shorter than the declared name.
6735 */
6736 if (t->fe->capture_name != NULL && txn->cli_cookie == NULL &&
6737 (val_end - att_beg >= t->fe->capture_namelen) &&
6738 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
6739 int log_len = val_end - att_beg;
6740
6741 if ((txn->cli_cookie = pool_alloc2(pool2_capture)) == NULL) {
6742 Alert("HTTP logging : out of memory.\n");
6743 } else {
6744 if (log_len > t->fe->capture_len)
6745 log_len = t->fe->capture_len;
6746 memcpy(txn->cli_cookie, att_beg, log_len);
6747 txn->cli_cookie[log_len] = 0;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6748 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6749 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6750
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6751 /* Persistence cookies in passive, rewrite or insert mode have the
6752 * following form :
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6753 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6754 * Cookie: NAME=SRV[|<lastseen>[|<firstseen>]]
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6755 *
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6756 * For cookies in prefix mode, the form is :
6757 *
6758 * Cookie: NAME=SRV~VALUE
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6759 */
6760 if ((att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
6761 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
6762 struct server *srv = t->be->srv;
6763 char *delim;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6764
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6765 /* if we're in cookie prefix mode, we'll search the delimitor so that we
6766 * have the server ID between val_beg and delim, and the original cookie between
6767 * delim+1 and val_end. Otherwise, delim==val_end :
6768 *
6769 * Cookie: NAME=SRV; # in all but prefix modes
6770 * Cookie: NAME=SRV~OPAQUE ; # in prefix mode
6771 * | || || | |+-> next
6772 * | || || | +--> val_end
6773 * | || || +---------> delim
6774 * | || |+------------> val_beg
6775 * | || +-------------> att_end = equal
6776 * | |+-----------------> att_beg
6777 * | +------------------> prev
6778 * +-------------------------> hdr_beg
6779 */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6780
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6781 if (t->be->ck_opts & PR_CK_PFX) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6782 for (delim = val_beg; delim < val_end; delim++)
6783 if (*delim == COOKIE_DELIM)
6784 break;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6785 } else {
6786 char *vbar1;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6787 delim = val_end;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6788 /* Now check if the cookie contains a date field, which would
6789 * appear after a vertical bar ('|') just after the server name
6790 * and before the delimiter.
6791 */
6792 vbar1 = memchr(val_beg, COOKIE_DELIM_DATE, val_end - val_beg);
6793 if (vbar1) {
6794 /* OK, so left of the bar is the server's cookie and
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6795 * right is the last seen date. It is a base64 encoded
6796 * 30-bit value representing the UNIX date since the
6797 * epoch in 4-second quantities.
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6798 */
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6799 int val;
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6800 delim = vbar1++;
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6801 if (val_end - vbar1 >= 5) {
6802 val = b64tos30(vbar1);
6803 if (val > 0)
6804 txn->cookie_last_date = val << 2;
6805 }
6806 /* look for a second vertical bar */
6807 vbar1 = memchr(vbar1, COOKIE_DELIM_DATE, val_end - vbar1);
6808 if (vbar1 && (val_end - vbar1 > 5)) {
6809 val = b64tos30(vbar1 + 1);
6810 if (val > 0)
6811 txn->cookie_first_date = val << 2;
6812 }
Willy Tarreaubca99692010-10-06 19:25:55 +0200[diff] [blame]6813 }
6814 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6815
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6816 /* if the cookie has an expiration date and the proxy wants to check
6817 * it, then we do that now. We first check if the cookie is too old,
6818 * then only if it has expired. We detect strict overflow because the
6819 * time resolution here is not great (4 seconds). Cookies with dates
6820 * in the future are ignored if their offset is beyond one day. This
6821 * allows an admin to fix timezone issues without expiring everyone
6822 * and at the same time avoids keeping unwanted side effects for too
6823 * long.
6824 */
6825 if (txn->cookie_first_date && t->be->cookie_maxlife &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6826 (((signed)(date.tv_sec - txn->cookie_first_date) > (signed)t->be->cookie_maxlife) ||
6827 ((signed)(txn->cookie_first_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6828 txn->flags &= ~TX_CK_MASK;
6829 txn->flags |= TX_CK_OLD;
6830 delim = val_beg; // let's pretend we have not found the cookie
6831 txn->cookie_first_date = 0;
6832 txn->cookie_last_date = 0;
6833 }
6834 else if (txn->cookie_last_date && t->be->cookie_maxidle &&
Willy Tarreauef4f3912010-10-07 21:00:29 +0200[diff] [blame]6835 (((signed)(date.tv_sec - txn->cookie_last_date) > (signed)t->be->cookie_maxidle) ||
6836 ((signed)(txn->cookie_last_date - date.tv_sec) > 86400))) {
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6837 txn->flags &= ~TX_CK_MASK;
6838 txn->flags |= TX_CK_EXPIRED;
6839 delim = val_beg; // let's pretend we have not found the cookie
6840 txn->cookie_first_date = 0;
6841 txn->cookie_last_date = 0;
6842 }
6843
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6844 /* Here, we'll look for the first running server which supports the cookie.
6845 * This allows to share a same cookie between several servers, for example
6846 * to dedicate backup servers to specific servers only.
6847 * However, to prevent clients from sticking to cookie-less backup server
6848 * when they have incidentely learned an empty cookie, we simply ignore
6849 * empty cookies and mark them as invalid.
6850 * The same behaviour is applied when persistence must be ignored.
6851 */
Willy Tarreau4a5cade2012-04-05 21:09:48 +0200[diff] [blame]6852 if ((delim == val_beg) || (t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6853 srv = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6854
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6855 while (srv) {
6856 if (srv->cookie && (srv->cklen == delim - val_beg) &&
6857 !memcmp(val_beg, srv->cookie, delim - val_beg)) {
6858 if ((srv->state & SRV_RUNNING) ||
6859 (t->be->options & PR_O_PERSIST) ||
6860 (t->flags & SN_FORCE_PRST)) {
6861 /* we found the server and we can use it */
6862 txn->flags &= ~TX_CK_MASK;
6863 txn->flags |= (srv->state & SRV_RUNNING) ? TX_CK_VALID : TX_CK_DOWN;
6864 t->flags |= SN_DIRECT | SN_ASSIGNED;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]6865 t->target = &srv->obj_type;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6866 break;
6867 } else {
6868 /* we found a server, but it's down,
6869 * mark it as such and go on in case
6870 * another one is available.
6871 */
6872 txn->flags &= ~TX_CK_MASK;
6873 txn->flags |= TX_CK_DOWN;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6874 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6875 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6876 srv = srv->next;
6877 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6878
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]6879 if (!srv && !(txn->flags & (TX_CK_DOWN|TX_CK_EXPIRED|TX_CK_OLD))) {
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6880 /* no server matched this cookie or we deliberately skipped it */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6881 txn->flags &= ~TX_CK_MASK;
Willy Tarreauc89ccb62012-04-05 21:18:22 +0200[diff] [blame]6882 if ((t->flags & (SN_IGNORE_PRST | SN_ASSIGNED)))
6883 txn->flags |= TX_CK_UNUSED;
6884 else
6885 txn->flags |= TX_CK_INVALID;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6886 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6887
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6888 /* depending on the cookie mode, we may have to either :
6889 * - delete the complete cookie if we're in insert+indirect mode, so that
6890 * the server never sees it ;
6891 * - remove the server id from the cookie value, and tag the cookie as an
6892 * application cookie so that it does not get accidentely removed later,
6893 * if we're in cookie prefix mode
6894 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6895 if ((t->be->ck_opts & PR_CK_PFX) && (delim != val_end)) {
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6896 int delta; /* negative */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6897
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6898 delta = buffer_replace2(req->buf, val_beg, delim + 1, NULL, 0);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6899 val_end += delta;
6900 next += delta;
6901 hdr_end += delta;
6902 hdr_next += delta;
6903 cur_hdr->len += delta;
6904 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6905
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6906 del_from = NULL;
6907 preserve_hdr = 1; /* we want to keep this cookie */
6908 }
6909 else if (del_from == NULL &&
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]6910 (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]6911 del_from = prev;
6912 }
6913 } else {
6914 /* This is not our cookie, so we must preserve it. But if we already
6915 * scheduled another cookie for removal, we cannot remove the
6916 * complete header, but we can remove the previous block itself.
6917 */
6918 preserve_hdr = 1;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6919
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6920 if (del_from != NULL) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6921 int delta = del_hdr_value(req->buf, &del_from, prev);
Willy Tarreaub8105542010-11-24 18:31:28 +0100[diff] [blame]6922 if (att_beg >= del_from)
6923 att_beg += delta;
6924 if (att_end >= del_from)
6925 att_end += delta;
6926 val_beg += delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6927 val_end += delta;
6928 next += delta;
6929 hdr_end += delta;
6930 hdr_next += delta;
6931 cur_hdr->len += delta;
6932 http_msg_move_end(&txn->req, delta);
6933 prev = del_from;
6934 del_from = NULL;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6935 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6936 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6937
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6938 /* Look for the appsession cookie unless persistence must be ignored */
6939 if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
6940 int cmp_len, value_len;
6941 char *value_begin;
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]6942
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6943 if (t->be->options2 & PR_O2_AS_PFX) {
6944 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
6945 value_begin = att_beg + t->be->appsession_name_len;
6946 value_len = val_end - att_beg - t->be->appsession_name_len;
6947 } else {
6948 cmp_len = att_end - att_beg;
6949 value_begin = val_beg;
6950 value_len = val_end - val_beg;
6951 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]6952
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6953 /* let's see if the cookie is our appcookie */
6954 if (cmp_len == t->be->appsession_name_len &&
6955 memcmp(att_beg, t->be->appsession_name, cmp_len) == 0) {
6956 manage_client_side_appsession(t, value_begin, value_len);
6957 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6958 }
6959
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6960 /* continue with next cookie on this header line */
6961 att_beg = next;
6962 } /* for each cookie */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6963
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6964 /* There are no more cookies on this line.
6965 * We may still have one (or several) marked for deletion at the
6966 * end of the line. We must do this now in two ways :
6967 * - if some cookies must be preserved, we only delete from the
6968 * mark to the end of line ;
6969 * - if nothing needs to be preserved, simply delete the whole header
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6970 */
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6971 if (del_from) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6972 int delta;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6973 if (preserve_hdr) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6974 delta = del_hdr_value(req->buf, &del_from, hdr_end);
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6975 hdr_end = del_from;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6976 cur_hdr->len += delta;
6977 } else {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]6978 delta = buffer_replace2(req->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6979
6980 /* FIXME: this should be a separate function */
Willy Tarreau4dbc4a22007-03-03 16:23:22 +0100[diff] [blame]6981 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
6982 txn->hdr_idx.used--;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6983 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]6984 cur_idx = old_idx;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6985 }
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6986 hdr_next += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]6987 http_msg_move_end(&txn->req, delta);
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6988 }
6989
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6990 /* check next header */
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6991 old_idx = cur_idx;
Willy Tarreaueb7b0a22010-08-31 16:45:02 +0200[diff] [blame]6992 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]6993}
6994
6995
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]6996/* Iterate the same filter through all response headers contained in <rtr>.
6997 * Returns 1 if this filter can be stopped upon return, otherwise 0.
6998 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]6999int 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]7000{
7001 char term;
7002 char *cur_ptr, *cur_end, *cur_next;
7003 int cur_idx, old_idx, last_hdr;
7004 struct http_txn *txn = &t->txn;
7005 struct hdr_idx_elem *cur_hdr;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7006 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7007
7008 last_hdr = 0;
7009
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7010 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7011 old_idx = 0;
7012
7013 while (!last_hdr) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7014 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7015 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7016 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7017 (exp->action == ACT_ALLOW ||
7018 exp->action == ACT_DENY))
7019 return 0;
7020
7021 cur_idx = txn->hdr_idx.v[old_idx].next;
7022 if (!cur_idx)
7023 break;
7024
7025 cur_hdr = &txn->hdr_idx.v[cur_idx];
7026 cur_ptr = cur_next;
7027 cur_end = cur_ptr + cur_hdr->len;
7028 cur_next = cur_end + cur_hdr->cr + 1;
7029
7030 /* Now we have one header between cur_ptr and cur_end,
7031 * and the next header starts at cur_next.
7032 */
7033
7034 /* The annoying part is that pattern matching needs
7035 * that we modify the contents to null-terminate all
7036 * strings before testing them.
7037 */
7038
7039 term = *cur_end;
7040 *cur_end = '\0';
7041
7042 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7043 switch (exp->action) {
7044 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7045 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7046 last_hdr = 1;
7047 break;
7048
7049 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7050 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7051 last_hdr = 1;
7052 break;
7053
7054 case ACT_REPLACE:
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7055 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7056 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7057 /* FIXME: if the user adds a newline in the replacement, the
7058 * index will not be recalculated for now, and the new line
7059 * will not be counted as a new header.
7060 */
7061
7062 cur_end += delta;
7063 cur_next += delta;
7064 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7065 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7066 break;
7067
7068 case ACT_REMOVE:
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7069 delta = buffer_replace2(rtr->buf, cur_ptr, cur_next, NULL, 0);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7070 cur_next += delta;
7071
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7072 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7073 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7074 txn->hdr_idx.used--;
7075 cur_hdr->len = 0;
7076 cur_end = NULL; /* null-term has been rewritten */
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7077 cur_idx = old_idx;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7078 break;
7079
7080 }
7081 }
7082 if (cur_end)
7083 *cur_end = term; /* restore the string terminator */
7084
7085 /* keep the link from this header to next one in case of later
7086 * removal of next header.
7087 */
7088 old_idx = cur_idx;
7089 }
7090 return 0;
7091}
7092
7093
7094/* Apply the filter to the status line in the response buffer <rtr>.
7095 * Returns 0 if nothing has been done, 1 if the filter has been applied,
7096 * or -1 if a replacement resulted in an invalid status line.
7097 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7098int 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]7099{
7100 char term;
7101 char *cur_ptr, *cur_end;
7102 int done;
7103 struct http_txn *txn = &t->txn;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7104 int delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7105
7106
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7107 if (unlikely(txn->flags & TX_SVDENY))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7108 return 1;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7109 else if (unlikely(txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7110 (exp->action == ACT_ALLOW ||
7111 exp->action == ACT_DENY))
7112 return 0;
7113 else if (exp->action == ACT_REMOVE)
7114 return 0;
7115
7116 done = 0;
7117
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7118 cur_ptr = rtr->buf->p;
Willy Tarreau1ba0e5f2010-06-07 13:57:32 +0200[diff] [blame]7119 cur_end = cur_ptr + txn->rsp.sl.st.l;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7120
7121 /* Now we have the status line between cur_ptr and cur_end */
7122
7123 /* The annoying part is that pattern matching needs
7124 * that we modify the contents to null-terminate all
7125 * strings before testing them.
7126 */
7127
7128 term = *cur_end;
7129 *cur_end = '\0';
7130
7131 if (regexec(exp->preg, cur_ptr, MAX_MATCH, pmatch, 0) == 0) {
7132 switch (exp->action) {
7133 case ACT_ALLOW:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7134 txn->flags |= TX_SVALLOW;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7135 done = 1;
7136 break;
7137
7138 case ACT_DENY:
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7139 txn->flags |= TX_SVDENY;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7140 done = 1;
7141 break;
7142
7143 case ACT_REPLACE:
7144 *cur_end = term; /* restore the string terminator */
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7145 trash.len = exp_replace(trash.str, cur_ptr, exp->replace, pmatch);
7146 delta = buffer_replace2(rtr->buf, cur_ptr, cur_end, trash.str, trash.len);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7147 /* FIXME: if the user adds a newline in the replacement, the
7148 * index will not be recalculated for now, and the new line
7149 * will not be counted as a new header.
7150 */
7151
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7152 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7153 cur_end += delta;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7154 cur_end = (char *)http_parse_stsline(&txn->rsp,
Willy Tarreau02785762007-04-03 14:45:44 +0200[diff] [blame]7155 HTTP_MSG_RPVER,
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7156 cur_ptr, cur_end + 1,
7157 NULL, NULL);
7158 if (unlikely(!cur_end))
7159 return -1;
7160
7161 /* we have a full respnse and we know that we have either a CR
7162 * or an LF at <ptr>.
7163 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7164 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]7165 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]7166 /* there is no point trying this regex on headers */
7167 return 1;
7168 }
7169 }
7170 *cur_end = term; /* restore the string terminator */
7171 return done;
7172}
7173
7174
7175
7176/*
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7177 * 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]7178 * Returns 0 if everything is alright, or -1 in case a replacement lead to an
7179 * unparsable response.
7180 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7181int apply_filters_to_response(struct session *s, struct channel *rtr, struct proxy *px)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7182{
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7183 struct http_txn *txn = &s->txn;
7184 struct hdr_exp *exp;
7185
7186 for (exp = px->rsp_exp; exp; exp = exp->next) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7187 int ret;
7188
7189 /*
7190 * The interleaving of transformations and verdicts
7191 * makes it difficult to decide to continue or stop
7192 * the evaluation.
7193 */
7194
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7195 if (txn->flags & TX_SVDENY)
7196 break;
7197
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7198 if ((txn->flags & TX_SVALLOW) &&
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7199 (exp->action == ACT_ALLOW || exp->action == ACT_DENY ||
7200 exp->action == ACT_PASS)) {
7201 exp = exp->next;
7202 continue;
7203 }
7204
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7205 /* if this filter had a condition, evaluate it now and skip to
7206 * next filter if the condition does not match.
7207 */
7208 if (exp->cond) {
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]7209 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]7210 ret = acl_pass(ret);
7211 if (((struct acl_cond *)exp->cond)->pol == ACL_COND_UNLESS)
7212 ret = !ret;
7213 if (!ret)
7214 continue;
7215 }
7216
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7217 /* Apply the filter to the status line. */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7218 ret = apply_filter_to_sts_line(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7219 if (unlikely(ret < 0))
7220 return -1;
7221
7222 if (likely(ret == 0)) {
7223 /* The filter did not match the response, it can be
7224 * iterated through all headers.
7225 */
Willy Tarreaufdb563c2010-01-31 15:43:27 +0100[diff] [blame]7226 apply_filter_to_resp_headers(s, rtr, exp);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7227 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7228 }
7229 return 0;
7230}
7231
7232
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7233/*
Willy Tarreau396d2c62007-11-04 19:30:00 +0100[diff] [blame]7234 * Manage server-side cookies. It can impact performance by about 2% so it is
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7235 * desirable to call it only when needed. This function is also used when we
7236 * just need to know if there is a cookie (eg: for check-cache).
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7237 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7238void manage_server_side_cookies(struct session *t, struct channel *res)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7239{
7240 struct http_txn *txn = &t->txn;
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7241 struct server *srv;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7242 int is_cookie2;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7243 int cur_idx, old_idx, delta;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7244 char *hdr_beg, *hdr_end, *hdr_next;
7245 char *prev, *att_beg, *att_end, *equal, *val_beg, *val_end, *next;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7246
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7247 /* Iterate through the headers.
7248 * we start with the start line.
7249 */
7250 old_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7251 hdr_next = res->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7252
7253 while ((cur_idx = txn->hdr_idx.v[old_idx].next)) {
7254 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7255 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7256
7257 cur_hdr = &txn->hdr_idx.v[cur_idx];
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7258 hdr_beg = hdr_next;
7259 hdr_end = hdr_beg + cur_hdr->len;
7260 hdr_next = hdr_end + cur_hdr->cr + 1;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7261
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7262 /* We have one full header between hdr_beg and hdr_end, and the
7263 * next header starts at hdr_next. We're only interested in
7264 * "Set-Cookie" and "Set-Cookie2" headers.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7265 */
7266
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7267 is_cookie2 = 0;
7268 prev = hdr_beg + 10;
7269 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie", 10);
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7270 if (!val) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7271 val = http_header_match2(hdr_beg, hdr_end, "Set-Cookie2", 11);
7272 if (!val) {
7273 old_idx = cur_idx;
7274 continue;
7275 }
7276 is_cookie2 = 1;
7277 prev = hdr_beg + 11;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7278 }
7279
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7280 /* OK, right now we know we have a Set-Cookie* at hdr_beg, and
7281 * <prev> points to the colon.
7282 */
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7283 txn->flags |= TX_SCK_PRESENT;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7284
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7285 /* Maybe we only wanted to see if there was a Set-Cookie (eg:
7286 * check-cache is enabled) and we are not interested in checking
7287 * them. Warning, the cookie capture is declared in the frontend.
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7288 */
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7289 if (t->be->cookie_name == NULL &&
7290 t->be->appsession_name == NULL &&
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7291 t->fe->capture_name == NULL)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7292 return;
7293
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7294 /* OK so now we know we have to process this response cookie.
7295 * The format of the Set-Cookie header is slightly different
7296 * from the format of the Cookie header in that it does not
7297 * support the comma as a cookie delimiter (thus the header
7298 * cannot be folded) because the Expires attribute described in
7299 * the original Netscape's spec may contain an unquoted date
7300 * with a comma inside. We have to live with this because
7301 * many browsers don't support Max-Age and some browsers don't
7302 * support quoted strings. However the Set-Cookie2 header is
7303 * clean.
7304 *
7305 * We have to keep multiple pointers in order to support cookie
7306 * removal at the beginning, middle or end of header without
7307 * corrupting the header (in case of set-cookie2). A special
7308 * pointer, <scav> points to the beginning of the set-cookie-av
7309 * fields after the first semi-colon. The <next> pointer points
7310 * either to the end of line (set-cookie) or next unquoted comma
7311 * (set-cookie2). All of these headers are valid :
7312 *
7313 * Set-Cookie: NAME1 = VALUE 1 ; Secure; Path="/"\r\n
7314 * Set-Cookie:NAME=VALUE; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7315 * Set-Cookie: NAME = VALUE ; Secure; Expires=Thu, 01-Jan-1970 00:00:01 GMT\r\n
7316 * Set-Cookie2: NAME1 = VALUE 1 ; Max-Age=0, NAME2=VALUE2; Discard\r\n
7317 * | | | | | | | | | |
7318 * | | | | | | | | +-> next hdr_end <--+
7319 * | | | | | | | +------------> scav
7320 * | | | | | | +--------------> val_end
7321 * | | | | | +--------------------> val_beg
7322 * | | | | +----------------------> equal
7323 * | | | +------------------------> att_end
7324 * | | +----------------------------> att_beg
7325 * | +------------------------------> prev
7326 * +-----------------------------------------> hdr_beg
7327 */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7328
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7329 for (; prev < hdr_end; prev = next) {
7330 /* Iterate through all cookies on this line */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7331
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7332 /* find att_beg */
7333 att_beg = prev + 1;
7334 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
7335 att_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7336
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7337 /* find att_end : this is the first character after the last non
7338 * space before the equal. It may be equal to hdr_end.
7339 */
7340 equal = att_end = att_beg;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7341
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7342 while (equal < hdr_end) {
7343 if (*equal == '=' || *equal == ';' || (is_cookie2 && *equal == ','))
7344 break;
7345 if (http_is_spht[(unsigned char)*equal++])
7346 continue;
7347 att_end = equal;
7348 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7349
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7350 /* here, <equal> points to '=', a delimitor or the end. <att_end>
7351 * is between <att_beg> and <equal>, both may be identical.
7352 */
7353
7354 /* look for end of cookie if there is an equal sign */
7355 if (equal < hdr_end && *equal == '=') {
7356 /* look for the beginning of the value */
7357 val_beg = equal + 1;
7358 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
7359 val_beg++;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7360
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7361 /* find the end of the value, respecting quotes */
7362 next = find_cookie_value_end(val_beg, hdr_end);
7363
7364 /* make val_end point to the first white space or delimitor after the value */
7365 val_end = next;
7366 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
7367 val_end--;
7368 } else {
7369 /* <equal> points to next comma, semi-colon or EOL */
7370 val_beg = val_end = next = equal;
7371 }
7372
7373 if (next < hdr_end) {
7374 /* Set-Cookie2 supports multiple cookies, and <next> points to
7375 * a colon or semi-colon before the end. So skip all attr-value
7376 * pairs and look for the next comma. For Set-Cookie, since
7377 * commas are permitted in values, skip to the end.
7378 */
7379 if (is_cookie2)
7380 next = find_hdr_value_end(next, hdr_end);
7381 else
7382 next = hdr_end;
7383 }
7384
7385 /* Now everything is as on the diagram above */
7386
7387 /* Ignore cookies with no equal sign */
7388 if (equal == val_end)
7389 continue;
7390
7391 /* If there are spaces around the equal sign, we need to
7392 * strip them otherwise we'll get trouble for cookie captures,
7393 * or even for rewrites. Since this happens extremely rarely,
7394 * it does not hurt performance.
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7395 */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7396 if (unlikely(att_end != equal || val_beg > equal + 1)) {
7397 int stripped_before = 0;
7398 int stripped_after = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7399
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7400 if (att_end != equal) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7401 stripped_before = buffer_replace2(res->buf, att_end, equal, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7402 equal += stripped_before;
7403 val_beg += stripped_before;
7404 }
7405
7406 if (val_beg > equal + 1) {
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7407 stripped_after = buffer_replace2(res->buf, equal + 1, val_beg, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7408 val_beg += stripped_after;
7409 stripped_before += stripped_after;
7410 }
7411
7412 val_end += stripped_before;
7413 next += stripped_before;
7414 hdr_end += stripped_before;
7415 hdr_next += stripped_before;
7416 cur_hdr->len += stripped_before;
Willy Tarreau1fc1f452011-04-07 22:35:37 +0200[diff] [blame]7417 http_msg_move_end(&txn->rsp, stripped_before);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7418 }
7419
7420 /* First, let's see if we want to capture this cookie. We check
7421 * that we don't already have a server side cookie, because we
7422 * can only capture one. Also as an optimisation, we ignore
7423 * cookies shorter than the declared name.
7424 */
Willy Tarreaufd39dda2008-10-17 12:01:58 +0200[diff] [blame]7425 if (t->fe->capture_name != NULL &&
Willy Tarreau3bac9ff2007-03-18 17:31:28 +0100[diff] [blame]7426 txn->srv_cookie == NULL &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7427 (val_end - att_beg >= t->fe->capture_namelen) &&
7428 memcmp(att_beg, t->fe->capture_name, t->fe->capture_namelen) == 0) {
7429 int log_len = val_end - att_beg;
Willy Tarreau086b3b42007-05-13 21:45:51 +0200[diff] [blame]7430 if ((txn->srv_cookie = pool_alloc2(pool2_capture)) == NULL) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7431 Alert("HTTP logging : out of memory.\n");
7432 }
Willy Tarreauf70fc752010-11-19 11:27:18 +0100[diff] [blame]7433 else {
7434 if (log_len > t->fe->capture_len)
7435 log_len = t->fe->capture_len;
7436 memcpy(txn->srv_cookie, att_beg, log_len);
7437 txn->srv_cookie[log_len] = 0;
7438 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7439 }
7440
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7441 srv = objt_server(t->target);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7442 /* now check if we need to process it for persistence */
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7443 if (!(t->flags & SN_IGNORE_PRST) &&
7444 (att_end - att_beg == t->be->cookie_len) && (t->be->cookie_name != NULL) &&
7445 (memcmp(att_beg, t->be->cookie_name, att_end - att_beg) == 0)) {
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7446 /* assume passive cookie by default */
7447 txn->flags &= ~TX_SCK_MASK;
7448 txn->flags |= TX_SCK_FOUND;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7449
7450 /* If the cookie is in insert mode on a known server, we'll delete
7451 * this occurrence because we'll insert another one later.
7452 * 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]7453 * a direct access.
7454 */
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7455 if (t->be->ck_opts & PR_CK_PSV) {
Willy Tarreauba4c5be2010-10-23 12:46:42 +0200[diff] [blame]7456 /* The "preserve" flag was set, we don't want to touch the
7457 * server's cookie.
7458 */
7459 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7460 else if ((srv && (t->be->ck_opts & PR_CK_INS)) ||
7461 ((t->flags & SN_DIRECT) && (t->be->ck_opts & PR_CK_IND))) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7462 /* this cookie must be deleted */
7463 if (*prev == ':' && next == hdr_end) {
7464 /* whole header */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7465 delta = buffer_replace2(res->buf, hdr_beg, hdr_next, NULL, 0);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7466 txn->hdr_idx.v[old_idx].next = cur_hdr->next;
7467 txn->hdr_idx.used--;
7468 cur_hdr->len = 0;
Willy Tarreau26db59e2010-11-28 06:57:24 +0100[diff] [blame]7469 cur_idx = old_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7470 hdr_next += delta;
7471 http_msg_move_end(&txn->rsp, delta);
7472 /* note: while both invalid now, <next> and <hdr_end>
7473 * are still equal, so the for() will stop as expected.
7474 */
7475 } else {
7476 /* just remove the value */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7477 int delta = del_hdr_value(res->buf, &prev, next);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7478 next = prev;
7479 hdr_end += delta;
7480 hdr_next += delta;
7481 cur_hdr->len += delta;
7482 http_msg_move_end(&txn->rsp, delta);
7483 }
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7484 txn->flags &= ~TX_SCK_MASK;
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7485 txn->flags |= TX_SCK_DELETED;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7486 /* and go on with next cookie */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7487 }
Willy Tarreau67402132012-05-31 20:40:20 +0200[diff] [blame]7488 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_RW)) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7489 /* replace bytes val_beg->val_end with the cookie name associated
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7490 * with this server since we know it.
7491 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7492 delta = buffer_replace2(res->buf, val_beg, val_end, srv->cookie, srv->cklen);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7493 next += delta;
7494 hdr_end += delta;
7495 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7496 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7497 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7498
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7499 txn->flags &= ~TX_SCK_MASK;
7500 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7501 }
Willy Tarreaua0590312012-06-06 16:07:00 +0200[diff] [blame]7502 else if (srv && srv->cookie && (t->be->ck_opts & PR_CK_PFX)) {
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7503 /* insert the cookie name associated with this server
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7504 * before existing cookie, and insert a delimiter between them..
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7505 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7506 delta = buffer_replace2(res->buf, val_beg, val_beg, srv->cookie, srv->cklen + 1);
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7507 next += delta;
7508 hdr_end += delta;
7509 hdr_next += delta;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7510 cur_hdr->len += delta;
Willy Tarreaufa355d42009-11-29 18:12:29 +0100[diff] [blame]7511 http_msg_move_end(&txn->rsp, delta);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7512
Willy Tarreau827aee92011-03-10 16:55:02 +0100[diff] [blame]7513 val_beg[srv->cklen] = COOKIE_DELIM;
Willy Tarreauf1348312010-10-07 15:54:11 +0200[diff] [blame]7514 txn->flags &= ~TX_SCK_MASK;
7515 txn->flags |= TX_SCK_REPLACED;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7516 }
7517 }
Cyril Bonté47fdd8e2010-04-25 00:00:51 +0200[diff] [blame]7518 /* next, let's see if the cookie is our appcookie, unless persistence must be ignored */
7519 else if (!(t->flags & SN_IGNORE_PRST) && (t->be->appsession_name != NULL)) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7520 int cmp_len, value_len;
7521 char *value_begin;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7522
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7523 if (t->be->options2 & PR_O2_AS_PFX) {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7524 cmp_len = MIN(val_end - att_beg, t->be->appsession_name_len);
7525 value_begin = att_beg + t->be->appsession_name_len;
7526 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]7527 } else {
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7528 cmp_len = att_end - att_beg;
7529 value_begin = val_beg;
7530 value_len = MIN(t->be->appsession_len, val_end - val_beg);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7531 }
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7532
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7533 if ((cmp_len == t->be->appsession_name_len) &&
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7534 (memcmp(att_beg, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7535 /* free a possibly previously allocated memory */
7536 pool_free2(apools.sessid, txn->sessid);
7537
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7538 /* Store the sessid in the session for future use */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7539 if ((txn->sessid = pool_alloc2(apools.sessid)) == NULL) {
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7540 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7541 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession->sessid:malloc().\n");
7542 return;
7543 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7544 memcpy(txn->sessid, value_begin, value_len);
7545 txn->sessid[value_len] = 0;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7546 }
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7547 }
7548 /* that's done for this cookie, check the next one on the same
7549 * line when next != hdr_end (only if is_cookie2).
7550 */
7551 }
7552 /* check next header */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7553 old_idx = cur_idx;
Willy Tarreau24581ba2010-08-31 22:39:35 +0200[diff] [blame]7554 }
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7555
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7556 if (txn->sessid != NULL) {
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7557 appsess *asession = NULL;
7558 /* only do insert, if lookup fails */
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7559 asession = appsession_hash_lookup(&(t->be->htbl_proxy), txn->sessid);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7560 if (asession == NULL) {
Willy Tarreau1fac7532010-01-09 19:23:06 +0100[diff] [blame]7561 size_t server_id_len;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7562 if ((asession = pool_alloc2(pool2_appsess)) == NULL) {
7563 Alert("Not enough Memory process_srv():asession:calloc().\n");
7564 send_log(t->be, LOG_ALERT, "Not enough Memory process_srv():asession:calloc().\n");
7565 return;
7566 }
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7567 asession->serverid = NULL; /* to avoid a double free in case of allocation error */
7568
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7569 if ((asession->sessid = pool_alloc2(apools.sessid)) == NULL) {
7570 Alert("Not enough Memory process_srv():asession->sessid:malloc().\n");
7571 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]7572 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7573 return;
7574 }
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]7575 memcpy(asession->sessid, txn->sessid, t->be->appsession_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7576 asession->sessid[t->be->appsession_len] = 0;
7577
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7578 server_id_len = strlen(objt_server(t->target)->id) + 1;
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7579 if ((asession->serverid = pool_alloc2(apools.serverid)) == NULL) {
Willy Tarreau77eb9b82010-11-19 11:29:06 +0100[diff] [blame]7580 Alert("Not enough Memory process_srv():asession->serverid:malloc().\n");
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7581 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]7582 t->be->htbl_proxy.destroy(asession);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7583 return;
7584 }
7585 asession->serverid[0] = '\0';
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7586 memcpy(asession->serverid, objt_server(t->target)->id, server_id_len);
Cyril Bontébf47aeb2009-10-15 00:15:40 +0200[diff] [blame]7587
7588 asession->request_count = 0;
7589 appsession_hash_insert(&(t->be->htbl_proxy), asession);
7590 }
7591
7592 asession->expire = tick_add_ifset(now_ms, t->be->timeout.appsession);
7593 asession->request_count++;
7594 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7595}
7596
7597
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7598/*
7599 * Check if response is cacheable or not. Updates t->flags.
7600 */
Willy Tarreau7421efb2012-07-02 15:11:27 +0200[diff] [blame]7601void check_response_for_cacheability(struct session *t, struct channel *rtr)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7602{
7603 struct http_txn *txn = &t->txn;
7604 char *p1, *p2;
7605
7606 char *cur_ptr, *cur_end, *cur_next;
7607 int cur_idx;
7608
Willy Tarreau5df51872007-11-25 16:20:08 +0100[diff] [blame]7609 if (!(txn->flags & TX_CACHEABLE))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7610 return;
7611
7612 /* Iterate through the headers.
7613 * we start with the start line.
7614 */
7615 cur_idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7616 cur_next = rtr->buf->p + hdr_idx_first_pos(&txn->hdr_idx);
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7617
7618 while ((cur_idx = txn->hdr_idx.v[cur_idx].next)) {
7619 struct hdr_idx_elem *cur_hdr;
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7620 int val;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7621
7622 cur_hdr = &txn->hdr_idx.v[cur_idx];
7623 cur_ptr = cur_next;
7624 cur_end = cur_ptr + cur_hdr->len;
7625 cur_next = cur_end + cur_hdr->cr + 1;
7626
7627 /* We have one full header between cur_ptr and cur_end, and the
7628 * next header starts at cur_next. We're only interested in
7629 * "Cookie:" headers.
7630 */
7631
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7632 val = http_header_match2(cur_ptr, cur_end, "Pragma", 6);
7633 if (val) {
7634 if ((cur_end - (cur_ptr + val) >= 8) &&
7635 strncasecmp(cur_ptr + val, "no-cache", 8) == 0) {
7636 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
7637 return;
7638 }
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7639 }
7640
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7641 val = http_header_match2(cur_ptr, cur_end, "Cache-control", 13);
7642 if (!val)
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7643 continue;
7644
7645 /* OK, right now we know we have a cache-control header at cur_ptr */
7646
Willy Tarreauaa9dce32007-03-18 23:50:16 +0100[diff] [blame]7647 p1 = cur_ptr + val; /* first non-space char after 'cache-control:' */
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7648
7649 if (p1 >= cur_end) /* no more info */
7650 continue;
7651
7652 /* p1 is at the beginning of the value */
7653 p2 = p1;
7654
Willy Tarreau8f8e6452007-06-17 21:51:38 +0200[diff] [blame]7655 while (p2 < cur_end && *p2 != '=' && *p2 != ',' && !isspace((unsigned char)*p2))
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7656 p2++;
7657
7658 /* we have a complete value between p1 and p2 */
7659 if (p2 < cur_end && *p2 == '=') {
7660 /* we have something of the form no-cache="set-cookie" */
7661 if ((cur_end - p1 >= 21) &&
7662 strncasecmp(p1, "no-cache=\"set-cookie", 20) == 0
7663 && (p1[20] == '"' || p1[20] == ','))
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7664 txn->flags &= ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7665 continue;
7666 }
7667
7668 /* OK, so we know that either p2 points to the end of string or to a comma */
7669 if (((p2 - p1 == 7) && strncasecmp(p1, "private", 7) == 0) ||
Willy Tarreau5b15f902013-07-04 12:46:56 +0200[diff] [blame]7670 ((p2 - p1 == 8) && strncasecmp(p1, "no-cache", 8) == 0) ||
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7671 ((p2 - p1 == 8) && strncasecmp(p1, "no-store", 8) == 0) ||
7672 ((p2 - p1 == 9) && strncasecmp(p1, "max-age=0", 9) == 0) ||
7673 ((p2 - p1 == 10) && strncasecmp(p1, "s-maxage=0", 10) == 0)) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7674 txn->flags &= ~TX_CACHEABLE & ~TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7675 return;
7676 }
7677
7678 if ((p2 - p1 == 6) && strncasecmp(p1, "public", 6) == 0) {
Willy Tarreau3d300592007-03-18 18:34:41 +0100[diff] [blame]7679 txn->flags |= TX_CACHEABLE | TX_CACHE_COOK;
Willy Tarreaua15645d2007-03-18 16:22:39 +0100[diff] [blame]7680 continue;
7681 }
7682 }
7683}
7684
7685
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7686/*
7687 * Try to retrieve a known appsession in the URI, then the associated server.
7688 * If the server is found, it's assigned to the session.
7689 */
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7690void get_srv_from_appsession(struct session *t, const char *begin, int len)
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7691{
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7692 char *end_params, *first_param, *cur_param, *next_param;
7693 char separator;
7694 int value_len;
7695
7696 int mode = t->be->options2 & PR_O2_AS_M_ANY;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7697
Willy Tarreaue2e27a52007-04-01 00:01:37 +0200[diff] [blame]7698 if (t->be->appsession_name == NULL ||
Cyril Bonté17530c32010-04-06 21:11:10 +0200[diff] [blame]7699 (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]7700 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7701 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7702
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7703 first_param = NULL;
7704 switch (mode) {
7705 case PR_O2_AS_M_PP:
7706 first_param = memchr(begin, ';', len);
7707 break;
7708 case PR_O2_AS_M_QS:
7709 first_param = memchr(begin, '?', len);
7710 break;
7711 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7712
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7713 if (first_param == NULL) {
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7714 return;
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7715 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7716
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7717 switch (mode) {
7718 case PR_O2_AS_M_PP:
7719 if ((end_params = memchr(first_param, '?', len - (begin - first_param))) == NULL) {
7720 end_params = (char *) begin + len;
7721 }
7722 separator = ';';
7723 break;
7724 case PR_O2_AS_M_QS:
7725 end_params = (char *) begin + len;
7726 separator = '&';
7727 break;
7728 default:
7729 /* unknown mode, shouldn't happen */
7730 return;
7731 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7732
Cyril Bontéb21570a2009-11-29 20:04:48 +0100[diff] [blame]7733 cur_param = next_param = end_params;
7734 while (cur_param > first_param) {
7735 cur_param--;
7736 if ((cur_param[0] == separator) || (cur_param == first_param)) {
7737 /* let's see if this is the appsession parameter */
7738 if ((cur_param + t->be->appsession_name_len + 1 < next_param) &&
7739 ((t->be->options2 & PR_O2_AS_PFX) || cur_param[t->be->appsession_name_len + 1] == '=') &&
7740 (strncasecmp(cur_param + 1, t->be->appsession_name, t->be->appsession_name_len) == 0)) {
7741 /* Cool... it's the right one */
7742 cur_param += t->be->appsession_name_len + (t->be->options2 & PR_O2_AS_PFX ? 1 : 2);
7743 value_len = MIN(t->be->appsession_len, next_param - cur_param);
7744 if (value_len > 0) {
7745 manage_client_side_appsession(t, cur_param, value_len);
7746 }
7747 break;
7748 }
7749 next_param = cur_param;
7750 }
7751 }
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7752#if defined(DEBUG_HASH)
Aleksandar Lazic697bbb02008-08-13 19:57:02 +0200[diff] [blame]7753 Alert("get_srv_from_appsession\n");
Willy Tarreau51041c72007-09-09 21:56:53 +0200[diff] [blame]7754 appsession_hash_dump(&(t->be->htbl_proxy));
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7755#endif
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7756}
7757
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7758/*
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7759 * 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]7760 * for the current backend.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7761 *
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7762 * 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]7763 * uri_auth field is valid.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7764 *
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7765 * Returns 1 if stats should be provided, otherwise 0.
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7766 */
Willy Tarreau295a8372011-03-10 11:25:07 +0100[diff] [blame]7767int stats_check_uri(struct stream_interface *si, struct http_txn *txn, struct proxy *backend)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7768{
7769 struct uri_auth *uri_auth = backend->uri_auth;
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7770 struct http_msg *msg = &txn->req;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7771 const char *uri = msg->chn->buf->p+ msg->sl.rq.u;
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7772
Krzysztof Piotr Oledzki8c8bd452010-01-29 19:29:32 +0100[diff] [blame]7773 if (!uri_auth)
7774 return 0;
7775
Cyril Bonté70be45d2010-10-12 00:14:35 +0200[diff] [blame]7776 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]7777 return 0;
7778
Willy Tarreau8d5d7f22007-01-21 19:16:41 +0100[diff] [blame]7779 /* check URI size */
Willy Tarreau3a215be2012-03-09 21:39:51 +0100[diff] [blame]7780 if (uri_auth->uri_len > msg->sl.rq.u_l)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7781 return 0;
7782
Willy Tarreau414e9bb2013-11-23 00:30:38 +0100[diff] [blame]7783 if (memcmp(uri, uri_auth->uri_prefix, uri_auth->uri_len) != 0)
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7784 return 0;
7785
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7786 return 1;
7787}
7788
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7789/*
7790 * Capture a bad request or response and archive it in the proxy's structure.
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7791 * By default it tries to report the error position as msg->err_pos. However if
7792 * this one is not set, it will then report msg->next, which is the last known
7793 * parsing point. The function is able to deal with wrapping buffers. It always
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7794 * displays buffers as a contiguous area starting at buf->p.
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7795 */
7796void http_capture_bad_message(struct error_snapshot *es, struct session *s,
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7797 struct http_msg *msg,
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7798 int state, struct proxy *other_end)
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7799{
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7800 struct channel *chn = msg->chn;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7801 int len1, len2;
Willy Tarreau8a0cef22012-03-09 13:39:23 +0100[diff] [blame]7802
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7803 es->len = MIN(chn->buf->i, sizeof(es->buf));
7804 len1 = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7805 len1 = MIN(len1, es->len);
7806 len2 = es->len - len1; /* remaining data if buffer wraps */
7807
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7808 memcpy(es->buf, chn->buf->p, len1);
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7809 if (len2)
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7810 memcpy(es->buf + len1, chn->buf->data, len2);
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7811
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7812 if (msg->err_pos >= 0)
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7813 es->pos = msg->err_pos;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7814 else
Willy Tarreau69d8c5d2012-05-08 09:44:41 +0200[diff] [blame]7815 es->pos = msg->next;
Willy Tarreau81f2fb92010-12-12 13:09:08 +0100[diff] [blame]7816
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7817 es->when = date; // user-visible date
7818 es->sid = s->uniq_id;
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]7819 es->srv = objt_server(s->target);
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7820 es->oe = other_end;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]7821 if (objt_conn(s->req->prod->end))
7822 es->src = __objt_conn(s->req->prod->end)->addr.from;
7823 else
7824 memset(&es->src, 0, sizeof(es->src));
7825
Willy Tarreau078272e2010-12-12 12:46:33 +0100[diff] [blame]7826 es->state = state;
Willy Tarreau10479e42010-12-12 14:00:34 +0100[diff] [blame]7827 es->ev_id = error_snapshot_id++;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7828 es->b_flags = chn->flags;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7829 es->s_flags = s->flags;
7830 es->t_flags = s->txn.flags;
7831 es->m_flags = msg->flags;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7832 es->b_out = chn->buf->o;
7833 es->b_wrap = chn->buf->data + chn->buf->size - chn->buf->p;
Willy Tarreaucdbdd522012-10-12 22:51:15 +0200[diff] [blame]7834 es->b_tot = chn->total;
Willy Tarreaud04b1bc2012-05-08 11:03:10 +0200[diff] [blame]7835 es->m_clen = msg->chunk_len;
7836 es->m_blen = msg->body_len;
Willy Tarreau4076a152009-04-02 15:18:36 +0200[diff] [blame]7837}
Willy Tarreaub2513902006-12-17 14:52:38 +0100[diff] [blame]7838
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7839/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7840 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7841 * performed over the whole headers. Otherwise it must contain a valid header
7842 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7843 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7844 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7845 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7846 * -1. The value fetch stops at commas, so this function is suited for use with
7847 * list headers.
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7848 * The return value is 0 if nothing was found, or non-zero otherwise.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7849 */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]7850unsigned int http_get_hdr(const struct http_msg *msg, const char *hname, int hlen,
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7851 struct hdr_idx *idx, int occ,
7852 struct hdr_ctx *ctx, char **vptr, int *vlen)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7853{
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7854 struct hdr_ctx local_ctx;
7855 char *ptr_hist[MAX_HDR_HISTORY];
7856 int len_hist[MAX_HDR_HISTORY];
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7857 unsigned int hist_ptr;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7858 int found;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7859
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7860 if (!ctx) {
7861 local_ctx.idx = 0;
7862 ctx = &local_ctx;
7863 }
7864
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7865 if (occ >= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7866 /* search from the beginning */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7867 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7868 occ--;
7869 if (occ <= 0) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7870 *vptr = ctx->line + ctx->val;
7871 *vlen = ctx->vlen;
7872 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7873 }
7874 }
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7875 return 0;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7876 }
7877
7878 /* negative occurrence, we scan all the list then walk back */
7879 if (-occ > MAX_HDR_HISTORY)
7880 return 0;
7881
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7882 found = hist_ptr = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]7883 while (http_find_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7884 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7885 len_hist[hist_ptr] = ctx->vlen;
7886 if (++hist_ptr >= MAX_HDR_HISTORY)
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7887 hist_ptr = 0;
7888 found++;
7889 }
7890 if (-occ > found)
7891 return 0;
7892 /* 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]7893 * find occurrence -occ. 0 <= hist_ptr < MAX_HDR_HISTORY, and we have
7894 * -10 <= occ <= -1. So we have to check [hist_ptr%MAX_HDR_HISTORY+occ]
7895 * to remain in the 0..9 range.
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7896 */
Willy Tarreau67dad272013-06-12 22:27:44 +0200[diff] [blame]7897 hist_ptr += occ + MAX_HDR_HISTORY;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7898 if (hist_ptr >= MAX_HDR_HISTORY)
7899 hist_ptr -= MAX_HDR_HISTORY;
Willy Tarreau294c4732011-12-16 21:35:50 +0100[diff] [blame]7900 *vptr = ptr_hist[hist_ptr];
7901 *vlen = len_hist[hist_ptr];
7902 return 1;
Willy Tarreaubce70882009-09-07 11:51:47 +0200[diff] [blame]7903}
7904
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]7905/* Return in <vptr> and <vlen> the pointer and length of occurrence <occ> of
7906 * header whose name is <hname> of length <hlen>. If <ctx> is null, lookup is
7907 * performed over the whole headers. Otherwise it must contain a valid header
7908 * context, initialised with ctx->idx=0 for the first lookup in a series. If
7909 * <occ> is positive or null, occurrence #occ from the beginning (or last ctx)
7910 * is returned. Occ #0 and #1 are equivalent. If <occ> is negative (and no less
7911 * than -MAX_HDR_HISTORY), the occurrence is counted from the last one which is
7912 * -1. This function differs from http_get_hdr() in that it only returns full
7913 * line header values and does not stop at commas.
7914 * The return value is 0 if nothing was found, or non-zero otherwise.
7915 */
7916unsigned int http_get_fhdr(const struct http_msg *msg, const char *hname, int hlen,
7917 struct hdr_idx *idx, int occ,
7918 struct hdr_ctx *ctx, char **vptr, int *vlen)
7919{
7920 struct hdr_ctx local_ctx;
7921 char *ptr_hist[MAX_HDR_HISTORY];
7922 int len_hist[MAX_HDR_HISTORY];
7923 unsigned int hist_ptr;
7924 int found;
7925
7926 if (!ctx) {
7927 local_ctx.idx = 0;
7928 ctx = &local_ctx;
7929 }
7930
7931 if (occ >= 0) {
7932 /* search from the beginning */
7933 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
7934 occ--;
7935 if (occ <= 0) {
7936 *vptr = ctx->line + ctx->val;
7937 *vlen = ctx->vlen;
7938 return 1;
7939 }
7940 }
7941 return 0;
7942 }
7943
7944 /* negative occurrence, we scan all the list then walk back */
7945 if (-occ > MAX_HDR_HISTORY)
7946 return 0;
7947
7948 found = hist_ptr = 0;
7949 while (http_find_full_header2(hname, hlen, msg->chn->buf->p, idx, ctx)) {
7950 ptr_hist[hist_ptr] = ctx->line + ctx->val;
7951 len_hist[hist_ptr] = ctx->vlen;
7952 if (++hist_ptr >= MAX_HDR_HISTORY)
7953 hist_ptr = 0;
7954 found++;
7955 }
7956 if (-occ > found)
7957 return 0;
7958 /* OK now we have the last occurrence in [hist_ptr-1], and we need to
7959 * find occurrence -occ, so we have to check [hist_ptr+occ].
7960 */
7961 hist_ptr += occ;
7962 if (hist_ptr >= MAX_HDR_HISTORY)
7963 hist_ptr -= MAX_HDR_HISTORY;
7964 *vptr = ptr_hist[hist_ptr];
7965 *vlen = len_hist[hist_ptr];
7966 return 1;
7967}
7968
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]7969/*
Willy Tarreaue92693a2012-09-24 21:13:39 +0200[diff] [blame]7970 * Print a debug line with a header. Always stop at the first CR or LF char,
7971 * so it is safe to pass it a full buffer if needed. If <err> is not NULL, an
7972 * arrow is printed after the line which contains the pointer.
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7973 */
7974void debug_hdr(const char *dir, struct session *t, const char *start, const char *end)
7975{
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7976 int max;
7977 chunk_printf(&trash, "%08x:%s.%s[%04x:%04x]: ", t->uniq_id, t->be->id,
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]7978 dir,
7979 objt_conn(t->req->prod->end) ? (unsigned short)objt_conn(t->req->prod->end)->t.sock.fd : -1,
7980 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]7981
7982 for (max = 0; start + max < end; max++)
7983 if (start[max] == '\r' || start[max] == '\n')
7984 break;
7985
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]7986 UBOUND(max, trash.size - trash.len - 3);
7987 trash.len += strlcpy2(trash.str + trash.len, start, max + 1);
7988 trash.str[trash.len++] = '\n';
7989 if (write(1, trash.str, trash.len) < 0) /* shut gcc warning */;
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]7990}
7991
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]7992/*
7993 * Initialize a new HTTP transaction for session <s>. It is assumed that all
7994 * the required fields are properly allocated and that we only need to (re)init
7995 * them. This should be used before processing any new request.
7996 */
7997void http_init_txn(struct session *s)
7998{
7999 struct http_txn *txn = &s->txn;
8000 struct proxy *fe = s->fe;
8001
8002 txn->flags = 0;
8003 txn->status = -1;
8004
Willy Tarreauf64d1412010-10-07 20:06:11 +0200[diff] [blame]8005 txn->cookie_first_date = 0;
8006 txn->cookie_last_date = 0;
8007
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8008 txn->req.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8009 txn->req.sol = txn->req.eol = txn->req.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8010 txn->req.next = 0;
Willy Tarreaua36fc4d2012-02-17 17:39:37 +0100[diff] [blame]8011 txn->rsp.flags = 0;
Willy Tarreau26927362012-05-18 23:22:52 +0200[diff] [blame]8012 txn->rsp.sol = txn->rsp.eol = txn->rsp.eoh = 0; /* relative to the buffer */
Willy Tarreaua458b672012-03-05 11:17:50 +0100[diff] [blame]8013 txn->rsp.next = 0;
Willy Tarreau124d9912011-03-01 20:30:48 +0100[diff] [blame]8014 txn->req.chunk_len = 0LL;
8015 txn->req.body_len = 0LL;
8016 txn->rsp.chunk_len = 0LL;
8017 txn->rsp.body_len = 0LL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8018 txn->req.msg_state = HTTP_MSG_RQBEFORE; /* at the very beginning of the request */
8019 txn->rsp.msg_state = HTTP_MSG_RPBEFORE; /* at the very beginning of the response */
Willy Tarreau394db372012-10-12 22:40:39 +0200[diff] [blame]8020 txn->req.chn = s->req;
8021 txn->rsp.chn = s->rep;
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8022
8023 txn->auth.method = HTTP_AUTH_UNKNOWN;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8024
8025 txn->req.err_pos = txn->rsp.err_pos = -2; /* block buggy requests/responses */
8026 if (fe->options2 & PR_O2_REQBUG_OK)
8027 txn->req.err_pos = -1; /* let buggy requests pass */
8028
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8029 if (txn->req.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8030 memset(txn->req.cap, 0, fe->nb_req_cap * sizeof(void *));
8031
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8032 if (txn->rsp.cap)
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8033 memset(txn->rsp.cap, 0, fe->nb_rsp_cap * sizeof(void *));
8034
8035 if (txn->hdr_idx.v)
8036 hdr_idx_init(&txn->hdr_idx);
8037}
8038
8039/* to be used at the end of a transaction */
8040void http_end_txn(struct session *s)
8041{
8042 struct http_txn *txn = &s->txn;
8043
8044 /* these ones will have been dynamically allocated */
8045 pool_free2(pool2_requri, txn->uri);
8046 pool_free2(pool2_capture, txn->cli_cookie);
8047 pool_free2(pool2_capture, txn->srv_cookie);
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8048 pool_free2(apools.sessid, txn->sessid);
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8049 pool_free2(pool2_uniqueid, s->unique_id);
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]8050
William Lallemanda73203e2012-03-12 12:48:57 +0100[diff] [blame]8051 s->unique_id = NULL;
Willy Tarreaua3377ee2010-01-10 10:49:11 +0100[diff] [blame]8052 txn->sessid = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8053 txn->uri = NULL;
8054 txn->srv_cookie = NULL;
8055 txn->cli_cookie = NULL;
Willy Tarreau46023632010-01-07 22:51:47 +0100[diff] [blame]8056
8057 if (txn->req.cap) {
8058 struct cap_hdr *h;
8059 for (h = s->fe->req_cap; h; h = h->next)
8060 pool_free2(h->pool, txn->req.cap[h->index]);
8061 memset(txn->req.cap, 0, s->fe->nb_req_cap * sizeof(void *));
8062 }
8063
8064 if (txn->rsp.cap) {
8065 struct cap_hdr *h;
8066 for (h = s->fe->rsp_cap; h; h = h->next)
8067 pool_free2(h->pool, txn->rsp.cap[h->index]);
8068 memset(txn->rsp.cap, 0, s->fe->nb_rsp_cap * sizeof(void *));
8069 }
8070
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8071}
8072
8073/* to be used at the end of a transaction to prepare a new one */
8074void http_reset_txn(struct session *s)
8075{
8076 http_end_txn(s);
8077 http_init_txn(s);
8078
8079 s->be = s->fe;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8080 s->logs.logwait = s->fe->to_log;
Willy Tarreauabcd5142013-06-11 17:18:02 +0200[diff] [blame]8081 s->logs.level = 0;
Simon Hormanaf514952011-06-21 14:34:57 +0900[diff] [blame]8082 session_del_srv_conn(s);
Willy Tarreau3fdb3662012-11-12 00:42:33 +0100[diff] [blame]8083 s->target = NULL;
Emeric Brunb982a3d2010-01-04 15:45:53 +0100[diff] [blame]8084 /* re-init store persistence */
8085 s->store_count = 0;
8086
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8087 s->pend_pos = NULL;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8088
Willy Tarreau03cdb7c2012-08-27 23:14:58 +0200[diff] [blame]8089 s->req->flags |= CF_READ_DONTWAIT; /* one read is usually enough */
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8090
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8091 /* We must trim any excess data from the response buffer, because we
8092 * may have blocked an invalid response from a server that we don't
8093 * want to accidentely forward once we disable the analysers, nor do
8094 * we want those data to come along with next response. A typical
8095 * example of such data would be from a buggy server responding to
8096 * a HEAD with some data, or sending more than the advertised
8097 * content-length.
8098 */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8099 if (unlikely(s->rep->buf->i))
8100 s->rep->buf->i = 0;
Willy Tarreau739cfba2010-01-25 23:11:14 +0100[diff] [blame]8101
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8102 s->req->rto = s->fe->timeout.client;
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8103 s->req->wto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8104
Willy Tarreaud04e8582010-05-31 12:31:35 +0200[diff] [blame]8105 s->rep->rto = TICK_ETERNITY;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8106 s->rep->wto = s->fe->timeout.client;
Willy Tarreau0937bc42009-12-22 15:03:09 +0100[diff] [blame]8107
8108 s->req->rex = TICK_ETERNITY;
8109 s->req->wex = TICK_ETERNITY;
8110 s->req->analyse_exp = TICK_ETERNITY;
8111 s->rep->rex = TICK_ETERNITY;
8112 s->rep->wex = TICK_ETERNITY;
8113 s->rep->analyse_exp = TICK_ETERNITY;
8114}
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]8115
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8116void free_http_req_rules(struct list *r) {
8117 struct http_req_rule *tr, *pr;
8118
8119 list_for_each_entry_safe(pr, tr, r, list) {
8120 LIST_DEL(&pr->list);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8121 if (pr->action == HTTP_REQ_ACT_AUTH)
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8122 free(pr->arg.auth.realm);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8123
8124 free(pr);
8125 }
8126}
8127
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8128/* parse an "http-request" rule */
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8129struct http_req_rule *parse_http_req_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8130{
8131 struct http_req_rule *rule;
8132 int cur_arg;
8133
8134 rule = (struct http_req_rule*)calloc(1, sizeof(struct http_req_rule));
8135 if (!rule) {
8136 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8137 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8138 }
8139
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8140 if (!strcmp(args[0], "allow")) {
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8141 rule->action = HTTP_REQ_ACT_ALLOW;
8142 cur_arg = 1;
8143 } else if (!strcmp(args[0], "deny")) {
8144 rule->action = HTTP_REQ_ACT_DENY;
8145 cur_arg = 1;
Willy Tarreauccbcc372012-12-27 12:37:57 +0100[diff] [blame]8146 } else if (!strcmp(args[0], "tarpit")) {
8147 rule->action = HTTP_REQ_ACT_TARPIT;
8148 cur_arg = 1;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8149 } else if (!strcmp(args[0], "auth")) {
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8150 rule->action = HTTP_REQ_ACT_AUTH;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8151 cur_arg = 1;
8152
8153 while(*args[cur_arg]) {
8154 if (!strcmp(args[cur_arg], "realm")) {
Willy Tarreau5c2e1982012-12-24 12:00:25 +0100[diff] [blame]8155 rule->arg.auth.realm = strdup(args[cur_arg + 1]);
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8156 cur_arg+=2;
8157 continue;
8158 } else
8159 break;
8160 }
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8161 } else if (!strcmp(args[0], "set-nice")) {
8162 rule->action = HTTP_REQ_ACT_SET_NICE;
8163 cur_arg = 1;
8164
8165 if (!*args[cur_arg] ||
8166 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8167 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer value).\n",
8168 file, linenum, args[0]);
8169 goto out_err;
8170 }
8171 rule->arg.nice = atoi(args[cur_arg]);
8172 if (rule->arg.nice < -1024)
8173 rule->arg.nice = -1024;
8174 else if (rule->arg.nice > 1024)
8175 rule->arg.nice = 1024;
8176 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8177 } else if (!strcmp(args[0], "set-tos")) {
8178#ifdef IP_TOS
8179 char *err;
8180 rule->action = HTTP_REQ_ACT_SET_TOS;
8181 cur_arg = 1;
8182
8183 if (!*args[cur_arg] ||
8184 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8185 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8186 file, linenum, args[0]);
8187 goto out_err;
8188 }
8189
8190 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8191 if (err && *err != '\0') {
8192 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8193 file, linenum, err, args[0]);
8194 goto out_err;
8195 }
8196 cur_arg++;
8197#else
8198 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8199 goto out_err;
8200#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8201 } else if (!strcmp(args[0], "set-mark")) {
8202#ifdef SO_MARK
8203 char *err;
8204 rule->action = HTTP_REQ_ACT_SET_MARK;
8205 cur_arg = 1;
8206
8207 if (!*args[cur_arg] ||
8208 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8209 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (integer/hex value).\n",
8210 file, linenum, args[0]);
8211 goto out_err;
8212 }
8213
8214 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8215 if (err && *err != '\0') {
8216 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-request %s' (integer/hex value expected).\n",
8217 file, linenum, err, args[0]);
8218 goto out_err;
8219 }
8220 cur_arg++;
8221 global.last_checks |= LSTCHK_NETADM;
8222#else
8223 Alert("parsing [%s:%d]: 'http-request %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8224 goto out_err;
8225#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8226 } else if (!strcmp(args[0], "set-log-level")) {
8227 rule->action = HTTP_REQ_ACT_SET_LOGL;
8228 cur_arg = 1;
8229
8230 if (!*args[cur_arg] ||
8231 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8232 bad_log_level:
8233 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 1 argument (log level name or 'silent').\n",
8234 file, linenum, args[0]);
8235 goto out_err;
8236 }
8237 if (strcmp(args[cur_arg], "silent") == 0)
8238 rule->arg.loglevel = -1;
8239 else if ((rule->arg.loglevel = get_log_level(args[cur_arg]) + 1) == 0)
8240 goto bad_log_level;
8241 cur_arg++;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8242 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8243 rule->action = *args[0] == 'a' ? HTTP_REQ_ACT_ADD_HDR : HTTP_REQ_ACT_SET_HDR;
8244 cur_arg = 1;
8245
Willy Tarreau8d1c5162013-04-03 14:13:58 +0200[diff] [blame]8246 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8247 (*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]8248 Alert("parsing [%s:%d]: 'http-request %s' expects exactly 2 arguments.\n",
8249 file, linenum, args[0]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8250 goto out_err;
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8251 }
8252
8253 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8254 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8255 LIST_INIT(&rule->arg.hdr_add.fmt);
Willy Tarreaua4312fa2013-04-02 16:34:32 +0200[diff] [blame]8256
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8257 proxy->conf.args.ctx = ARGC_HRQ;
Willy Tarreau434c57c2013-01-08 01:10:24 +0100[diff] [blame]8258 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8259 (proxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR);
Willy Tarreau20b0de52012-12-24 15:45:22 +0100[diff] [blame]8260 cur_arg += 2;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8261 } else if (strcmp(args[0], "redirect") == 0) {
8262 struct redirect_rule *redir;
Willy Tarreau6d4890c2013-11-18 18:04:25 +0100[diff] [blame]8263 char *errmsg = NULL;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8264
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8265 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]8266 Alert("parsing [%s:%d] : error detected in %s '%s' while parsing 'http-request %s' rule : %s.\n",
8267 file, linenum, proxy_type_str(proxy), proxy->id, args[0], errmsg);
8268 goto out_err;
8269 }
8270
8271 /* this redirect rule might already contain a parsed condition which
8272 * we'll pass to the http-request rule.
8273 */
8274 rule->action = HTTP_REQ_ACT_REDIR;
8275 rule->arg.redir = redir;
8276 rule->cond = redir->cond;
8277 redir->cond = NULL;
8278 cur_arg = 2;
8279 return rule;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8280 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8281 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]8282 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8283 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8284 }
8285
8286 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8287 struct acl_cond *cond;
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8288 char *errmsg = NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8289
Willy Tarreaub7451bb2012-04-27 12:38:15 +0200[diff] [blame]8290 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8291 Alert("parsing [%s:%d] : error detected while parsing an 'http-request %s' condition : %s.\n",
8292 file, linenum, args[0], errmsg);
8293 free(errmsg);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8294 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8295 }
8296 rule->cond = cond;
8297 }
8298 else if (*args[cur_arg]) {
8299 Alert("parsing [%s:%d]: 'http-request %s' expects 'realm' for 'auth' or"
8300 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8301 file, linenum, args[0], args[cur_arg]);
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8302 goto out_err;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8303 }
8304
8305 return rule;
Willy Tarreau81499eb2012-12-27 12:19:02 +0100[diff] [blame]8306 out_err:
8307 free(rule);
8308 return NULL;
Willy Tarreauff011f22011-01-06 17:51:27 +0100[diff] [blame]8309}
8310
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8311/* parse an "http-respose" rule */
8312struct http_res_rule *parse_http_res_cond(const char **args, const char *file, int linenum, struct proxy *proxy)
8313{
8314 struct http_res_rule *rule;
8315 int cur_arg;
8316
8317 rule = calloc(1, sizeof(*rule));
8318 if (!rule) {
8319 Alert("parsing [%s:%d]: out of memory.\n", file, linenum);
8320 goto out_err;
8321 }
8322
8323 if (!strcmp(args[0], "allow")) {
8324 rule->action = HTTP_RES_ACT_ALLOW;
8325 cur_arg = 1;
8326 } else if (!strcmp(args[0], "deny")) {
8327 rule->action = HTTP_RES_ACT_DENY;
8328 cur_arg = 1;
Willy Tarreauf4c43c12013-06-11 17:01:13 +0200[diff] [blame]8329 } else if (!strcmp(args[0], "set-nice")) {
8330 rule->action = HTTP_RES_ACT_SET_NICE;
8331 cur_arg = 1;
8332
8333 if (!*args[cur_arg] ||
8334 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8335 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer value).\n",
8336 file, linenum, args[0]);
8337 goto out_err;
8338 }
8339 rule->arg.nice = atoi(args[cur_arg]);
8340 if (rule->arg.nice < -1024)
8341 rule->arg.nice = -1024;
8342 else if (rule->arg.nice > 1024)
8343 rule->arg.nice = 1024;
8344 cur_arg++;
Willy Tarreau42cf39e2013-06-11 18:51:32 +0200[diff] [blame]8345 } else if (!strcmp(args[0], "set-tos")) {
8346#ifdef IP_TOS
8347 char *err;
8348 rule->action = HTTP_RES_ACT_SET_TOS;
8349 cur_arg = 1;
8350
8351 if (!*args[cur_arg] ||
8352 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8353 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8354 file, linenum, args[0]);
8355 goto out_err;
8356 }
8357
8358 rule->arg.tos = strtol(args[cur_arg], &err, 0);
8359 if (err && *err != '\0') {
8360 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8361 file, linenum, err, args[0]);
8362 goto out_err;
8363 }
8364 cur_arg++;
8365#else
8366 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (IP_TOS undefined).\n", file, linenum, args[0]);
8367 goto out_err;
8368#endif
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8369 } else if (!strcmp(args[0], "set-mark")) {
8370#ifdef SO_MARK
8371 char *err;
8372 rule->action = HTTP_RES_ACT_SET_MARK;
8373 cur_arg = 1;
8374
8375 if (!*args[cur_arg] ||
8376 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8377 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (integer/hex value).\n",
8378 file, linenum, args[0]);
8379 goto out_err;
8380 }
8381
8382 rule->arg.mark = strtoul(args[cur_arg], &err, 0);
8383 if (err && *err != '\0') {
8384 Alert("parsing [%s:%d]: invalid character starting at '%s' in 'http-response %s' (integer/hex value expected).\n",
8385 file, linenum, err, args[0]);
8386 goto out_err;
8387 }
8388 cur_arg++;
8389 global.last_checks |= LSTCHK_NETADM;
8390#else
8391 Alert("parsing [%s:%d]: 'http-response %s' is not supported on this platform (SO_MARK undefined).\n", file, linenum, args[0]);
8392 goto out_err;
8393#endif
Willy Tarreau9a355ec2013-06-11 17:45:46 +0200[diff] [blame]8394 } else if (!strcmp(args[0], "set-log-level")) {
8395 rule->action = HTTP_RES_ACT_SET_LOGL;
8396 cur_arg = 1;
8397
8398 if (!*args[cur_arg] ||
8399 (*args[cur_arg + 1] && strcmp(args[cur_arg + 1], "if") != 0 && strcmp(args[cur_arg + 1], "unless") != 0)) {
8400 bad_log_level:
8401 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 1 argument (log level name or 'silent').\n",
8402 file, linenum, args[0]);
8403 goto out_err;
8404 }
8405 if (strcmp(args[cur_arg], "silent") == 0)
8406 rule->arg.loglevel = -1;
8407 else if ((rule->arg.loglevel = get_log_level(args[cur_arg] + 1)) == 0)
8408 goto bad_log_level;
8409 cur_arg++;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8410 } else if (strcmp(args[0], "add-header") == 0 || strcmp(args[0], "set-header") == 0) {
8411 rule->action = *args[0] == 'a' ? HTTP_RES_ACT_ADD_HDR : HTTP_RES_ACT_SET_HDR;
8412 cur_arg = 1;
8413
8414 if (!*args[cur_arg] || !*args[cur_arg+1] ||
8415 (*args[cur_arg+2] && strcmp(args[cur_arg+2], "if") != 0 && strcmp(args[cur_arg+2], "unless") != 0)) {
8416 Alert("parsing [%s:%d]: 'http-response %s' expects exactly 2 arguments.\n",
8417 file, linenum, args[0]);
8418 goto out_err;
8419 }
8420
8421 rule->arg.hdr_add.name = strdup(args[cur_arg]);
8422 rule->arg.hdr_add.name_len = strlen(rule->arg.hdr_add.name);
8423 LIST_INIT(&rule->arg.hdr_add.fmt);
8424
Thierry FOURNIER1c0054f2013-11-20 15:09:52 +0100[diff] [blame]8425 proxy->conf.args.ctx = ARGC_HRS;
Willy Tarreaue365c0b2013-06-11 16:06:12 +0200[diff] [blame]8426 parse_logformat_string(args[cur_arg + 1], proxy, &rule->arg.hdr_add.fmt, 0,
8427 (proxy->cap & PR_CAP_BE) ? SMP_VAL_BE_HRS_HDR : SMP_VAL_FE_HRS_HDR);
8428 cur_arg += 2;
8429 } else {
Willy Tarreau51347ed2013-06-11 19:34:13 +0200[diff] [blame]8430 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]8431 file, linenum, args[0], *args[0] ? "" : " (missing argument)");
8432 goto out_err;
8433 }
8434
8435 if (strcmp(args[cur_arg], "if") == 0 || strcmp(args[cur_arg], "unless") == 0) {
8436 struct acl_cond *cond;
8437 char *errmsg = NULL;
8438
8439 if ((cond = build_acl_cond(file, linenum, proxy, args+cur_arg, &errmsg)) == NULL) {
8440 Alert("parsing [%s:%d] : error detected while parsing an 'http-response %s' condition : %s.\n",
8441 file, linenum, args[0], errmsg);
8442 free(errmsg);
8443 goto out_err;
8444 }
8445 rule->cond = cond;
8446 }
8447 else if (*args[cur_arg]) {
8448 Alert("parsing [%s:%d]: 'http-response %s' expects"
8449 " either 'if' or 'unless' followed by a condition but found '%s'.\n",
8450 file, linenum, args[0], args[cur_arg]);
8451 goto out_err;
8452 }
8453
8454 return rule;
8455 out_err:
8456 free(rule);
8457 return NULL;
8458}
8459
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8460/* Parses a redirect rule. Returns the redirect rule on success or NULL on error,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8461 * with <err> filled with the error message. If <use_fmt> is not null, builds a
8462 * dynamic log-format rule instead of a static string.
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8463 */
8464struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8465 const char **args, char **errmsg, int use_fmt)
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8466{
8467 struct redirect_rule *rule;
8468 int cur_arg;
8469 int type = REDIRECT_TYPE_NONE;
8470 int code = 302;
8471 const char *destination = NULL;
8472 const char *cookie = NULL;
8473 int cookie_set = 0;
8474 unsigned int flags = REDIRECT_FLAG_NONE;
8475 struct acl_cond *cond = NULL;
8476
8477 cur_arg = 0;
8478 while (*(args[cur_arg])) {
8479 if (strcmp(args[cur_arg], "location") == 0) {
8480 if (!*args[cur_arg + 1])
8481 goto missing_arg;
8482
8483 type = REDIRECT_TYPE_LOCATION;
8484 cur_arg++;
8485 destination = args[cur_arg];
8486 }
8487 else if (strcmp(args[cur_arg], "prefix") == 0) {
8488 if (!*args[cur_arg + 1])
8489 goto missing_arg;
8490
8491 type = REDIRECT_TYPE_PREFIX;
8492 cur_arg++;
8493 destination = args[cur_arg];
8494 }
8495 else if (strcmp(args[cur_arg], "scheme") == 0) {
8496 if (!*args[cur_arg + 1])
8497 goto missing_arg;
8498
8499 type = REDIRECT_TYPE_SCHEME;
8500 cur_arg++;
8501 destination = args[cur_arg];
8502 }
8503 else if (strcmp(args[cur_arg], "set-cookie") == 0) {
8504 if (!*args[cur_arg + 1])
8505 goto missing_arg;
8506
8507 cur_arg++;
8508 cookie = args[cur_arg];
8509 cookie_set = 1;
8510 }
8511 else if (strcmp(args[cur_arg], "clear-cookie") == 0) {
8512 if (!*args[cur_arg + 1])
8513 goto missing_arg;
8514
8515 cur_arg++;
8516 cookie = args[cur_arg];
8517 cookie_set = 0;
8518 }
8519 else if (strcmp(args[cur_arg], "code") == 0) {
8520 if (!*args[cur_arg + 1])
8521 goto missing_arg;
8522
8523 cur_arg++;
8524 code = atol(args[cur_arg]);
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8525 if (code < 301 || code > 308 || (code > 303 && code < 307)) {
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8526 memprintf(errmsg,
Yves Lafon3e8d1ae2013-03-11 11:06:05 -0400[diff] [blame]8527 "'%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]8528 args[cur_arg - 1], args[cur_arg]);
8529 return NULL;
8530 }
8531 }
8532 else if (!strcmp(args[cur_arg],"drop-query")) {
8533 flags |= REDIRECT_FLAG_DROP_QS;
8534 }
8535 else if (!strcmp(args[cur_arg],"append-slash")) {
8536 flags |= REDIRECT_FLAG_APPEND_SLASH;
8537 }
8538 else if (strcmp(args[cur_arg], "if") == 0 ||
8539 strcmp(args[cur_arg], "unless") == 0) {
8540 cond = build_acl_cond(file, linenum, curproxy, (const char **)args + cur_arg, errmsg);
8541 if (!cond) {
8542 memprintf(errmsg, "error in condition: %s", *errmsg);
8543 return NULL;
8544 }
8545 break;
8546 }
8547 else {
8548 memprintf(errmsg,
8549 "expects 'code', 'prefix', 'location', 'scheme', 'set-cookie', 'clear-cookie', 'drop-query' or 'append-slash' (was '%s')",
8550 args[cur_arg]);
8551 return NULL;
8552 }
8553 cur_arg++;
8554 }
8555
8556 if (type == REDIRECT_TYPE_NONE) {
8557 memprintf(errmsg, "redirection type expected ('prefix', 'location', or 'scheme')");
8558 return NULL;
8559 }
8560
8561 rule = (struct redirect_rule *)calloc(1, sizeof(*rule));
8562 rule->cond = cond;
Willy Tarreau60e08382013-12-03 00:48:45 +0100[diff] [blame]8563 LIST_INIT(&rule->rdr_fmt);
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8564
8565 if (!use_fmt) {
8566 /* old-style static redirect rule */
8567 rule->rdr_str = strdup(destination);
8568 rule->rdr_len = strlen(destination);
8569 }
8570 else {
8571 /* log-format based redirect rule */
Thierry FOURNIERd18cd0f2013-11-29 12:15:45 +0100[diff] [blame]8572
8573 /* Parse destination. Note that in the REDIRECT_TYPE_PREFIX case,
8574 * if prefix == "/", we don't want to add anything, otherwise it
8575 * makes it hard for the user to configure a self-redirection.
8576 */
8577 proxy->conf.args.ctx = ARGC_RDR;
8578 if (!(type == REDIRECT_TYPE_PREFIX && destination[0] == '/' && destination[1] == '\0')) {
8579 parse_logformat_string(destination, curproxy, &rule->rdr_fmt, 0,
8580 (curproxy->cap & PR_CAP_FE) ? SMP_VAL_FE_HRQ_HDR : SMP_VAL_BE_HRQ_HDR);
8581 }
8582 }
8583
Willy Tarreau4baae242012-12-27 12:00:31 +0100[diff] [blame]8584 if (cookie) {
8585 /* depending on cookie_set, either we want to set the cookie, or to clear it.
8586 * a clear consists in appending "; path=/; Max-Age=0;" at the end.
8587 */
8588 rule->cookie_len = strlen(cookie);
8589 if (cookie_set) {
8590 rule->cookie_str = malloc(rule->cookie_len + 10);
8591 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8592 memcpy(rule->cookie_str + rule->cookie_len, "; path=/;", 10);
8593 rule->cookie_len += 9;
8594 } else {
8595 rule->cookie_str = malloc(rule->cookie_len + 21);
8596 memcpy(rule->cookie_str, cookie, rule->cookie_len);
8597 memcpy(rule->cookie_str + rule->cookie_len, "; path=/; Max-Age=0;", 21);
8598 rule->cookie_len += 20;
8599 }
8600 }
8601 rule->type = type;
8602 rule->code = code;
8603 rule->flags = flags;
8604 LIST_INIT(&rule->list);
8605 return rule;
8606
8607 missing_arg:
8608 memprintf(errmsg, "missing argument for '%s'", args[cur_arg]);
8609 return NULL;
8610}
8611
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8612/************************************************************************/
8613/* The code below is dedicated to ACL parsing and matching */
8614/************************************************************************/
8615
8616
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8617/* This function ensures that the prerequisites for an L7 fetch are ready,
8618 * which means that a request or response is ready. If some data is missing,
8619 * 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]8620 * to extract data from L7. If <req_vol> is non-null during a request prefetch,
8621 * another test is made to ensure the required information is not gone.
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8622 *
8623 * The function returns :
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8624 * 0 with SMP_F_MAY_CHANGE in the sample flags if some data is missing to
8625 * decide whether or not an HTTP message is present ;
8626 * 0 if the requested data cannot be fetched or if it is certain that
8627 * we'll never have any HTTP message there ;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8628 * 1 if an HTTP message is ready
8629 */
8630static int
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8631smp_prefetch_http(struct proxy *px, struct session *s, void *l7, unsigned int opt,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8632 const struct arg *args, struct sample *smp, int req_vol)
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8633{
8634 struct http_txn *txn = l7;
8635 struct http_msg *msg = &txn->req;
8636
8637 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
8638 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
8639 */
8640
8641 if (unlikely(!s || !txn))
8642 return 0;
8643
8644 /* Check for a dependency on a request */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8645 smp->type = SMP_T_BOOL;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8646
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]8647 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8648 if (unlikely(!s->req))
8649 return 0;
8650
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8651 /* If the buffer does not leave enough free space at the end,
8652 * we must first realign it.
8653 */
8654 if (s->req->buf->p > s->req->buf->data &&
8655 s->req->buf->i + s->req->buf->p > s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)
8656 buffer_slow_realign(s->req->buf);
8657
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8658 if (unlikely(txn->req.msg_state < HTTP_MSG_BODY)) {
Willy Tarreau472b1ee2013-10-14 22:41:30 +0200[diff] [blame]8659 if (msg->msg_state == HTTP_MSG_ERROR)
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8660 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8661
8662 /* Try to decode HTTP request */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8663 if (likely(msg->next < s->req->buf->i))
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8664 http_msg_analyzer(msg, &txn->hdr_idx);
8665
8666 /* Still no valid request ? */
8667 if (unlikely(msg->msg_state < HTTP_MSG_BODY)) {
Willy Tarreau3bf1b2b2012-08-27 20:46:07 +0200[diff] [blame]8668 if ((msg->msg_state == HTTP_MSG_ERROR) ||
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8669 buffer_full(s->req->buf, global.tune.maxrewrite)) {
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8670 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8671 }
8672 /* wait for final state */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8673 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8674 return 0;
8675 }
8676
8677 /* OK we just got a valid HTTP request. We have some minor
8678 * preparation to perform so that further checks can rely
8679 * on HTTP tests.
8680 */
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8681
8682 /* If the request was parsed but was too large, we must absolutely
8683 * return an error so that it is not processed. At the moment this
8684 * cannot happen, but if the parsers are to change in the future,
8685 * we want this check to be maintained.
8686 */
8687 if (unlikely(s->req->buf->i + s->req->buf->p >
8688 s->req->buf->data + s->req->buf->size - global.tune.maxrewrite)) {
8689 msg->msg_state = HTTP_MSG_ERROR;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8690 smp->data.uint = 1;
Willy Tarreauaae75e32013-03-29 12:31:49 +0100[diff] [blame]8691 return 1;
8692 }
8693
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8694 txn->meth = find_http_meth(msg->chn->buf->p, msg->sl.rq.m_l);
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8695 if (txn->meth == HTTP_METH_GET || txn->meth == HTTP_METH_HEAD)
8696 s->flags |= SN_REDIRECTABLE;
8697
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8698 if (unlikely(msg->sl.rq.v_l == 0) && !http_upgrade_v09_to_v10(txn))
8699 return 0;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8700 }
8701
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8702 if (req_vol && txn->rsp.msg_state != HTTP_MSG_RPBEFORE) {
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8703 return 0; /* data might have moved and indexes changed */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8704 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8705
8706 /* otherwise everything's ready for the request */
8707 }
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8708 else {
8709 /* Check for a dependency on a response */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8710 if (txn->rsp.msg_state < HTTP_MSG_BODY) {
8711 smp->flags |= SMP_F_MAY_CHANGE;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8712 return 0;
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8713 }
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8714 }
8715
8716 /* everything's OK */
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8717 smp->data.uint = 1;
Willy Tarreau14174bc2012-04-16 14:34:04 +0200[diff] [blame]8718 return 1;
8719}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8720
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8721#define CHECK_HTTP_MESSAGE_FIRST() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8722 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]8723
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8724#define CHECK_HTTP_MESSAGE_FIRST_PERM() \
Willy Tarreau506d0502013-07-06 13:29:24 +0200[diff] [blame]8725 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]8726
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8727
8728/* 1. Check on METHOD
8729 * We use the pre-parsed method if it is known, and store its number as an
8730 * integer. If it is unknown, we use the pointer and the length.
8731 */
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8732static int pat_parse_meth(const char **text, struct pattern *pattern, struct sample_storage *smp, int *opaque, char **err)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8733{
8734 int len, meth;
8735
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8736 len = strlen(*text);
8737 meth = find_http_meth(*text, len);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8738
Thierry FOURNIERdd69a042013-11-22 19:14:42 +0100[diff] [blame]8739 pattern->smp = smp;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8740 pattern->val.i = meth;
8741 if (meth == HTTP_METH_OTHER) {
Willy Tarreauae8b7962007-06-09 23:10:04 +0200[diff] [blame]8742 pattern->ptr.str = strdup(*text);
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8743 if (!pattern->ptr.str) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]8744 memprintf(err, "out of memory while loading pattern");
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8745 return 0;
Willy Tarreau7dcb6482012-04-27 17:52:25 +0200[diff] [blame]8746 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8747 pattern->len = len;
8748 }
8749 return 1;
8750}
8751
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8752/* This function fetches the method of current HTTP request and stores
8753 * it in the global pattern struct as a chunk. There are two possibilities :
8754 * - if the method is known (not HTTP_METH_OTHER), its identifier is stored
8755 * in <len> and <ptr> is NULL ;
8756 * - if the method is unknown (HTTP_METH_OTHER), <ptr> points to the text and
8757 * <len> to its length.
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8758 * This is intended to be used with pat_match_meth() only.
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8759 */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8760static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8761smp_fetch_meth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8762 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8763{
8764 int meth;
8765 struct http_txn *txn = l7;
8766
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]8767 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8768
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8769 meth = txn->meth;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8770 smp->type = SMP_T_UINT;
8771 smp->data.uint = meth;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8772 if (meth == HTTP_METH_OTHER) {
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8773 if (txn->rsp.msg_state != HTTP_MSG_RPBEFORE)
8774 /* ensure the indexes are not affected */
8775 return 0;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8776 smp->type = SMP_T_CSTR;
8777 smp->data.str.len = txn->req.sl.rq.m_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8778 smp->data.str.str = txn->req.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8779 }
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8780 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8781 return 1;
8782}
8783
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8784/* See above how the method is stored in the global pattern */
Willy Tarreau0cba6072013-11-28 22:21:02 +0100[diff] [blame]8785static enum pat_match_res pat_match_meth(struct sample *smp, struct pattern *pattern)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8786{
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8787 int icase;
8788
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8789
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8790 if (smp->type == SMP_T_UINT) {
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8791 /* well-known method */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8792 if (smp->data.uint == pattern->val.i)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8793 return PAT_MATCH;
8794 return PAT_NOMATCH;
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8795 }
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8796
Willy Tarreau8e5e9552011-12-16 15:38:49 +0100[diff] [blame]8797 /* Uncommon method, only HTTP_METH_OTHER is accepted now */
8798 if (pattern->val.i != HTTP_METH_OTHER)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8799 return PAT_NOMATCH;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8800
8801 /* Other method, we must compare the strings */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8802 if (pattern->len != smp->data.str.len)
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8803 return PAT_NOMATCH;
Willy Tarreauc8d7c962007-06-17 08:20:33 +0200[diff] [blame]8804
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8805 icase = pattern->flags & PAT_F_IGNORE_CASE;
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8806 if ((icase && strncasecmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0) ||
8807 (!icase && strncmp(pattern->ptr.str, smp->data.str.str, smp->data.str.len) != 0))
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]8808 return PAT_NOMATCH;
8809 return PAT_MATCH;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8810}
8811
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8812static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8813smp_fetch_rqver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8814 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8815{
8816 struct http_txn *txn = l7;
8817 char *ptr;
8818 int len;
8819
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8820 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8821
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8822 len = txn->req.sl.rq.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8823 ptr = txn->req.chn->buf->p + txn->req.sl.rq.v;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8824
8825 while ((len-- > 0) && (*ptr++ != '/'));
8826 if (len <= 0)
8827 return 0;
8828
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8829 smp->type = SMP_T_CSTR;
8830 smp->data.str.str = ptr;
8831 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8832
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8833 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8834 return 1;
8835}
8836
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8837static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8838smp_fetch_stver(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8839 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8840{
8841 struct http_txn *txn = l7;
8842 char *ptr;
8843 int len;
8844
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8845 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8846
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8847 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8848 return 0;
8849
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8850 len = txn->rsp.sl.st.v_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8851 ptr = txn->rsp.chn->buf->p;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8852
8853 while ((len-- > 0) && (*ptr++ != '/'));
8854 if (len <= 0)
8855 return 0;
8856
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8857 smp->type = SMP_T_CSTR;
8858 smp->data.str.str = ptr;
8859 smp->data.str.len = len;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8860
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8861 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8862 return 1;
8863}
8864
8865/* 3. Check on Status Code. We manipulate integers here. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8866static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]8867smp_fetch_stcode(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8868 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8869{
8870 struct http_txn *txn = l7;
8871 char *ptr;
8872 int len;
8873
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8874 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8875
Willy Tarreauf26b2522012-12-14 08:33:14 +0100[diff] [blame]8876 if (txn->rsp.msg_state < HTTP_MSG_BODY)
8877 return 0;
8878
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8879 len = txn->rsp.sl.st.c_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8880 ptr = txn->rsp.chn->buf->p + txn->rsp.sl.st.c;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8881
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8882 smp->type = SMP_T_UINT;
8883 smp->data.uint = __strl2ui(ptr, len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8884 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8885 return 1;
8886}
8887
8888/* 4. Check on URL/URI. A pointer to the URI is stored. */
Willy Tarreaud41f8d82007-06-10 10:06:18 +0200[diff] [blame]8889static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8890smp_fetch_url(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8891 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8892{
8893 struct http_txn *txn = l7;
8894
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8895 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]8896
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]8897 smp->type = SMP_T_CSTR;
8898 smp->data.str.len = txn->req.sl.rq.u_l;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]8899 smp->data.str.str = txn->req.chn->buf->p + txn->req.sl.rq.u;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8900 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]8901 return 1;
8902}
8903
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8904static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8905smp_fetch_url_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8906 const struct arg *args, struct sample *smp, const char *kw)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8907{
8908 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8909 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8910
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8911 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8912
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8913 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr);
8914 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
Willy Tarreauf4362b32011-12-16 17:49:52 +0100[diff] [blame]8915 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8916
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8917 smp->type = SMP_T_IPV4;
8918 smp->data.ipv4 = ((struct sockaddr_in *)&addr)->sin_addr;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]8919 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8920 return 1;
8921}
8922
8923static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]8924smp_fetch_url_port(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)
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8926{
8927 struct http_txn *txn = l7;
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8928 struct sockaddr_storage addr;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8929
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]8930 CHECK_HTTP_MESSAGE_FIRST();
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8931
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8932 url2sa(txn->req.chn->buf->p + txn->req.sl.rq.u, txn->req.sl.rq.u_l, &addr);
8933 if (((struct sockaddr_in *)&addr)->sin_family != AF_INET)
8934 return 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8935
Willy Tarreau4c804ec2013-09-30 14:37:14 +0200[diff] [blame]8936 smp->type = SMP_T_UINT;
8937 smp->data.uint = ntohs(((struct sockaddr_in *)&addr)->sin_port);
Willy Tarreau21e5b0e2012-04-23 19:25:44 +0200[diff] [blame]8938 smp->flags = 0;
Alexandre Cassen5eb1a902007-11-29 15:43:32 +0100[diff] [blame]8939 return 1;
8940}
8941
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]8942/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
8943 * Accepts an optional argument of type string containing the header field name,
8944 * and an optional argument of type signed or unsigned integer to request an
8945 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8946 * headers are considered from the first one. It does not stop on commas and
8947 * returns full lines instead (useful for User-Agent or Date for example).
8948 */
8949static int
8950smp_fetch_fhdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]8951 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]8952{
8953 struct http_txn *txn = l7;
8954 struct hdr_idx *idx = &txn->hdr_idx;
8955 struct hdr_ctx *ctx = smp->ctx.a[0];
8956 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
8957 int occ = 0;
8958 const char *name_str = NULL;
8959 int name_len = 0;
8960
8961 if (!ctx) {
8962 /* first call */
8963 ctx = &static_hdr_ctx;
8964 ctx->idx = 0;
8965 smp->ctx.a[0] = ctx;
8966 }
8967
8968 if (args) {
8969 if (args[0].type != ARGT_STR)
8970 return 0;
8971 name_str = args[0].data.str.str;
8972 name_len = args[0].data.str.len;
8973
8974 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
8975 occ = args[1].data.uint;
8976 }
8977
8978 CHECK_HTTP_MESSAGE_FIRST();
8979
8980 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
8981 /* search for header from the beginning */
8982 ctx->idx = 0;
8983
8984 if (!occ && !(opt & SMP_OPT_ITERATE))
8985 /* no explicit occurrence and single fetch => last header by default */
8986 occ = -1;
8987
8988 if (!occ)
8989 /* prepare to report multiple occurrences for ACL fetches */
8990 smp->flags |= SMP_F_NOT_LAST;
8991
8992 smp->type = SMP_T_CSTR;
8993 smp->flags |= SMP_F_VOL_HDR;
8994 if (http_get_fhdr(msg, name_str, name_len, idx, occ, ctx, &smp->data.str.str, &smp->data.str.len))
8995 return 1;
8996
8997 smp->flags &= ~SMP_F_NOT_LAST;
8998 return 0;
8999}
9000
9001/* 6. Check on HTTP header count. The number of occurrences is returned.
9002 * Accepts exactly 1 argument of type string. It does not stop on commas and
9003 * returns full lines instead (useful for User-Agent or Date for example).
9004 */
9005static int
9006smp_fetch_fhdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9007 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]9008{
9009 struct http_txn *txn = l7;
9010 struct hdr_idx *idx = &txn->hdr_idx;
9011 struct hdr_ctx ctx;
9012 const struct http_msg *msg = ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) ? &txn->req : &txn->rsp;
9013 int cnt;
9014
9015 if (!args || args->type != ARGT_STR)
9016 return 0;
9017
9018 CHECK_HTTP_MESSAGE_FIRST();
9019
9020 ctx.idx = 0;
9021 cnt = 0;
9022 while (http_find_full_header2(args->data.str.str, args->data.str.len, msg->chn->buf->p, idx, &ctx))
9023 cnt++;
9024
9025 smp->type = SMP_T_UINT;
9026 smp->data.uint = cnt;
9027 smp->flags = SMP_F_VOL_HDR;
9028 return 1;
9029}
9030
9031/* Fetch an HTTP header. A pointer to the beginning of the value is returned.
9032 * Accepts an optional argument of type string containing the header field name,
9033 * and an optional argument of type signed or unsigned integer to request an
9034 * explicit occurrence of the header. Note that in the event of a missing name,
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9035 * headers are considered from the first one.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9036 */
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9037static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9038smp_fetch_hdr(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9039 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9040{
9041 struct http_txn *txn = l7;
9042 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9043 struct hdr_ctx *ctx = smp->ctx.a[0];
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9044 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]9045 int occ = 0;
9046 const char *name_str = NULL;
9047 int name_len = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9048
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9049 if (!ctx) {
9050 /* first call */
9051 ctx = &static_hdr_ctx;
9052 ctx->idx = 0;
Willy Tarreauffb6f082013-04-02 23:16:53 +0200[diff] [blame]9053 smp->ctx.a[0] = ctx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9054 }
9055
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9056 if (args) {
9057 if (args[0].type != ARGT_STR)
9058 return 0;
9059 name_str = args[0].data.str.str;
9060 name_len = args[0].data.str.len;
9061
9062 if (args[1].type == ARGT_UINT || args[1].type == ARGT_SINT)
9063 occ = args[1].data.uint;
9064 }
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9065
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9066 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9067
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9068 if (ctx && !(smp->flags & SMP_F_NOT_LAST))
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9069 /* search for header from the beginning */
9070 ctx->idx = 0;
9071
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9072 if (!occ && !(opt & SMP_OPT_ITERATE))
9073 /* no explicit occurrence and single fetch => last header by default */
9074 occ = -1;
9075
9076 if (!occ)
9077 /* prepare to report multiple occurrences for ACL fetches */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9078 smp->flags |= SMP_F_NOT_LAST;
Willy Tarreau664092c2011-12-16 19:11:42 +0100[diff] [blame]9079
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9080 smp->type = SMP_T_CSTR;
9081 smp->flags |= SMP_F_VOL_HDR;
9082 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]9083 return 1;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9084
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9085 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9086 return 0;
9087}
9088
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9089/* 6. Check on HTTP header count. The number of occurrences is returned.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9090 * Accepts exactly 1 argument of type string.
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9091 */
9092static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9093smp_fetch_hdr_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9094 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9095{
9096 struct http_txn *txn = l7;
9097 struct hdr_idx *idx = &txn->hdr_idx;
9098 struct hdr_ctx ctx;
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9099 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]9100 int cnt;
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9101
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9102 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9103 return 0;
9104
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9105 CHECK_HTTP_MESSAGE_FIRST();
9106
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9107 ctx.idx = 0;
9108 cnt = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9109 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]9110 cnt++;
9111
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9112 smp->type = SMP_T_UINT;
9113 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9114 smp->flags = SMP_F_VOL_HDR;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9115 return 1;
9116}
9117
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9118/* Fetch an HTTP header's integer value. The integer value is returned. It
9119 * takes a mandatory argument of type string and an optional one of type int
9120 * to designate a specific occurrence. It returns an unsigned integer, which
9121 * may or may not be appropriate for everything.
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9122 */
9123static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9124smp_fetch_hdr_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9125 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9126{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9127 int ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw);
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9128
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9129 if (ret > 0) {
9130 smp->type = SMP_T_UINT;
9131 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9132 }
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9133
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9134 return ret;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9135}
9136
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9137/* Fetch an HTTP header's IP value. takes a mandatory argument of type string
9138 * and an optional one of type int to designate a specific occurrence.
9139 * It returns an IPv4 or IPv6 address.
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9140 */
9141static int
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9142smp_fetch_hdr_ip(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9143 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9144{
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9145 int ret;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9146
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9147 while ((ret = smp_fetch_hdr(px, l4, l7, opt, args, smp, kw)) > 0) {
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9148 if (url2ipv4((char *)smp->data.str.str, &smp->data.ipv4)) {
9149 smp->type = SMP_T_IPV4;
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9150 break;
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9151 } else {
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9152 struct chunk *temp = get_trash_chunk();
Cyril Bonté69fa9922012-10-25 00:01:06 +0200[diff] [blame]9153 if (smp->data.str.len < temp->size - 1) {
9154 memcpy(temp->str, smp->data.str.str, smp->data.str.len);
9155 temp->str[smp->data.str.len] = '\0';
9156 if (inet_pton(AF_INET6, temp->str, &smp->data.ipv6)) {
9157 smp->type = SMP_T_IPV6;
9158 break;
9159 }
9160 }
9161 }
9162
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9163 /* if the header doesn't match an IP address, fetch next one */
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9164 if (!(smp->flags & SMP_F_NOT_LAST))
9165 return 0;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9166 }
Willy Tarreaud53e2422012-04-16 17:21:11 +0200[diff] [blame]9167 return ret;
Willy Tarreau106f9792009-09-19 07:54:16 +0200[diff] [blame]9168}
9169
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9170/* 8. Check on URI PATH. A pointer to the PATH is stored. The path starts at
9171 * the first '/' after the possible hostname, and ends before the possible '?'.
9172 */
9173static int
Willy Tarreau6812bcf2012-04-29 09:28:50 +0200[diff] [blame]9174smp_fetch_path(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9175 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9176{
9177 struct http_txn *txn = l7;
9178 char *ptr, *end;
Willy Tarreau33a7e692007-06-10 19:45:56 +0200[diff] [blame]9179
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9180 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreauc11416f2007-06-17 16:58:38 +0200[diff] [blame]9181
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9182 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]9183 ptr = http_get_path(txn);
9184 if (!ptr)
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9185 return 0;
9186
9187 /* OK, we got the '/' ! */
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9188 smp->type = SMP_T_CSTR;
9189 smp->data.str.str = ptr;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9190
9191 while (ptr < end && *ptr != '?')
9192 ptr++;
9193
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9194 smp->data.str.len = ptr - smp->data.str.str;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9195 smp->flags = SMP_F_VOL_1ST;
Willy Tarreau737b0c12007-06-10 21:28:46 +0200[diff] [blame]9196 return 1;
9197}
9198
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9199/* This produces a concatenation of the first occurrence of the Host header
9200 * followed by the path component if it begins with a slash ('/'). This means
9201 * that '*' will not be added, resulting in exactly the first Host entry.
9202 * If no Host header is found, then the path is returned as-is. The returned
9203 * value is stored in the trash so it does not need to be marked constant.
9204 */
9205static int
9206smp_fetch_base(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9207 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9208{
9209 struct http_txn *txn = l7;
9210 char *ptr, *end, *beg;
9211 struct hdr_ctx ctx;
9212
9213 CHECK_HTTP_MESSAGE_FIRST();
9214
9215 ctx.idx = 0;
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9216 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]9217 !ctx.vlen)
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9218 return smp_fetch_path(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9219
9220 /* 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]9221 memcpy(trash.str, ctx.line + ctx.val, ctx.vlen);
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9222 smp->type = SMP_T_STR;
Willy Tarreau19d14ef2012-10-29 16:51:55 +0100[diff] [blame]9223 smp->data.str.str = trash.str;
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9224 smp->data.str.len = ctx.vlen;
9225
9226 /* now retrieve the path */
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9227 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]9228 beg = http_get_path(txn);
9229 if (!beg)
9230 beg = end;
9231
9232 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9233
9234 if (beg < ptr && *beg == '/') {
9235 memcpy(smp->data.str.str + smp->data.str.len, beg, ptr - beg);
9236 smp->data.str.len += ptr - beg;
9237 }
9238
9239 smp->flags = SMP_F_VOL_1ST;
9240 return 1;
9241}
9242
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9243/* This produces a 32-bit hash of the concatenation of the first occurrence of
9244 * the Host header followed by the path component if it begins with a slash ('/').
9245 * This means that '*' will not be added, resulting in exactly the first Host
9246 * 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]9247 * is hashed using the path hash followed by a full avalanche hash and provides a
9248 * 32-bit integer value. This fetch is useful for tracking per-path activity on
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9249 * high-traffic sites without having to store whole paths.
9250 */
9251static int
9252smp_fetch_base32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9253 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreauab1f7b72012-12-09 13:38:54 +0100[diff] [blame]9254{
9255 struct http_txn *txn = l7;
9256 struct hdr_ctx ctx;
9257 unsigned int hash = 0;
9258 char *ptr, *beg, *end;
9259 int len;
9260
9261 CHECK_HTTP_MESSAGE_FIRST();
9262
9263 ctx.idx = 0;
9264 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
9265 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
9266 ptr = ctx.line + ctx.val;
9267 len = ctx.vlen;
9268 while (len--)
9269 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
9270 }
9271
9272 /* now retrieve the path */
9273 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
9274 beg = http_get_path(txn);
9275 if (!beg)
9276 beg = end;
9277
9278 for (ptr = beg; ptr < end && *ptr != '?'; ptr++);
9279
9280 if (beg < ptr && *beg == '/') {
9281 while (beg < ptr)
9282 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
9283 }
9284 hash = full_hash(hash);
9285
9286 smp->type = SMP_T_UINT;
9287 smp->data.uint = hash;
9288 smp->flags = SMP_F_VOL_1ST;
9289 return 1;
9290}
9291
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9292/* 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]9293 * path as returned by smp_fetch_base32(). The idea is to have per-source and
9294 * per-path counters. The result is a binary block from 8 to 20 bytes depending
9295 * on the source address length. The path hash is stored before the address so
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9296 * that in environments where IPv6 is insignificant, truncating the output to
9297 * 8 bytes would still work.
9298 */
9299static int
9300smp_fetch_base32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9301 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9302{
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9303 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9304 struct connection *cli_conn = objt_conn(l4->si[0].end);
9305
9306 if (!cli_conn)
9307 return 0;
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9308
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9309 if (!smp_fetch_base32(px, l4, l7, opt, args, smp, kw))
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9310 return 0;
9311
Willy Tarreau47ca5452012-12-23 20:22:19 +0100[diff] [blame]9312 temp = get_trash_chunk();
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9313 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
9314 temp->len += sizeof(smp->data.uint);
9315
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9316 switch (cli_conn->addr.from.ss_family) {
Willy Tarreau4a550602012-12-09 14:53:32 +0100[diff] [blame]9317 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9318 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]9319 temp->len += 4;
9320 break;
9321 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9322 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]9323 temp->len += 16;
9324 break;
9325 default:
9326 return 0;
9327 }
9328
9329 smp->data.str = *temp;
9330 smp->type = SMP_T_BIN;
9331 return 1;
9332}
9333
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9334static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9335smp_fetch_proto_http(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9336 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9337{
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9338 /* Note: hdr_idx.v cannot be NULL in this ACL because the ACL is tagged
9339 * as a layer7 ACL, which involves automatic allocation of hdr_idx.
9340 */
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9341
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9342 CHECK_HTTP_MESSAGE_FIRST_PERM();
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9343
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9344 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9345 smp->data.uint = 1;
Willy Tarreau2492d5b2009-07-11 00:06:00 +0200[diff] [blame]9346 return 1;
9347}
9348
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9349/* return a valid test if the current request is the first one on the connection */
9350static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9351smp_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]9352 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9353{
9354 if (!s)
9355 return 0;
9356
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9357 smp->type = SMP_T_BOOL;
Willy Tarreau197e10a2012-04-23 19:18:42 +0200[diff] [blame]9358 smp->data.uint = !(s->txn.flags & TX_NOT_FIRST);
Willy Tarreau7f18e522010-10-22 20:04:13 +0200[diff] [blame]9359 return 1;
9360}
9361
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9362/* Accepts exactly 1 argument of type userlist */
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9363static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9364smp_fetch_http_auth(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9365 const struct arg *args, struct sample *smp, const char *kw)
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9366{
9367
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9368 if (!args || args->type != ARGT_USR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9369 return 0;
9370
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9371 CHECK_HTTP_MESSAGE_FIRST();
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9372
Willy Tarreauc0239e02012-04-16 14:42:55 +0200[diff] [blame]9373 if (!get_http_auth(l4))
Krzysztof Piotr Oledzkif9423ae2010-01-29 19:26:18 +0100[diff] [blame]9374 return 0;
9375
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9376 smp->type = SMP_T_BOOL;
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9377 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]9378 return 1;
9379}
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9380
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9381/* Accepts exactly 1 argument of type userlist */
9382static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9383smp_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]9384 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9385{
9386
9387 if (!args || args->type != ARGT_USR)
9388 return 0;
9389
9390 CHECK_HTTP_MESSAGE_FIRST();
9391
9392 if (!get_http_auth(l4))
9393 return 0;
9394
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9395 /* pat_match_auth() will need several information at once */
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9396 smp->ctx.a[0] = args->data.usr; /* user list */
9397 smp->ctx.a[1] = l4->txn.auth.user; /* user name */
9398 smp->ctx.a[2] = l4->txn.auth.pass; /* password */
9399
9400 /* if the user does not belong to the userlist or has a wrong password,
9401 * report that it unconditionally does not match. Otherwise we return
9402 * a non-zero integer which will be ignored anyway since all the params
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9403 * that pat_match_auth() will use are in test->ctx.a[0,1,2].
Willy Tarreau4a3fd4c2012-05-10 23:18:26 +0200[diff] [blame]9404 */
9405 smp->type = SMP_T_BOOL;
9406 smp->data.uint = check_user(args->data.usr, 0, l4->txn.auth.user, l4->txn.auth.pass);
9407 if (smp->data.uint)
9408 smp->type = SMP_T_UINT;
9409
9410 return 1;
9411}
9412
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9413/* Try to find the next occurrence of a cookie name in a cookie header value.
9414 * The lookup begins at <hdr>. The pointer and size of the next occurrence of
9415 * the cookie value is returned into *value and *value_l, and the function
9416 * returns a pointer to the next pointer to search from if the value was found.
9417 * Otherwise if the cookie was not found, NULL is returned and neither value
9418 * nor value_l are touched. The input <hdr> string should first point to the
9419 * header's value, and the <hdr_end> pointer must point to the first character
9420 * not part of the value. <list> must be non-zero if value may represent a list
9421 * of values (cookie headers). This makes it faster to abort parsing when no
9422 * list is expected.
9423 */
9424static char *
9425extract_cookie_value(char *hdr, const char *hdr_end,
9426 char *cookie_name, size_t cookie_name_l, int list,
Willy Tarreau3fb818c2012-04-11 17:21:08 +0200[diff] [blame]9427 char **value, int *value_l)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9428{
9429 char *equal, *att_end, *att_beg, *val_beg, *val_end;
9430 char *next;
9431
9432 /* we search at least a cookie name followed by an equal, and more
9433 * generally something like this :
9434 * Cookie: NAME1 = VALUE 1 ; NAME2 = VALUE2 ; NAME3 = VALUE3\r\n
9435 */
9436 for (att_beg = hdr; att_beg + cookie_name_l + 1 < hdr_end; att_beg = next + 1) {
9437 /* Iterate through all cookies on this line */
9438
9439 while (att_beg < hdr_end && http_is_spht[(unsigned char)*att_beg])
9440 att_beg++;
9441
9442 /* find att_end : this is the first character after the last non
9443 * space before the equal. It may be equal to hdr_end.
9444 */
9445 equal = att_end = att_beg;
9446
9447 while (equal < hdr_end) {
9448 if (*equal == '=' || *equal == ';' || (list && *equal == ','))
9449 break;
9450 if (http_is_spht[(unsigned char)*equal++])
9451 continue;
9452 att_end = equal;
9453 }
9454
9455 /* here, <equal> points to '=', a delimitor or the end. <att_end>
9456 * is between <att_beg> and <equal>, both may be identical.
9457 */
9458
9459 /* look for end of cookie if there is an equal sign */
9460 if (equal < hdr_end && *equal == '=') {
9461 /* look for the beginning of the value */
9462 val_beg = equal + 1;
9463 while (val_beg < hdr_end && http_is_spht[(unsigned char)*val_beg])
9464 val_beg++;
9465
9466 /* find the end of the value, respecting quotes */
9467 next = find_cookie_value_end(val_beg, hdr_end);
9468
9469 /* make val_end point to the first white space or delimitor after the value */
9470 val_end = next;
9471 while (val_end > val_beg && http_is_spht[(unsigned char)*(val_end - 1)])
9472 val_end--;
9473 } else {
9474 val_beg = val_end = next = equal;
9475 }
9476
9477 /* We have nothing to do with attributes beginning with '$'. However,
9478 * they will automatically be removed if a header before them is removed,
9479 * since they're supposed to be linked together.
9480 */
9481 if (*att_beg == '$')
9482 continue;
9483
9484 /* Ignore cookies with no equal sign */
9485 if (equal == next)
9486 continue;
9487
9488 /* Now we have the cookie name between att_beg and att_end, and
9489 * its value between val_beg and val_end.
9490 */
9491
9492 if (att_end - att_beg == cookie_name_l &&
9493 memcmp(att_beg, cookie_name, cookie_name_l) == 0) {
9494 /* let's return this value and indicate where to go on from */
9495 *value = val_beg;
9496 *value_l = val_end - val_beg;
9497 return next + 1;
9498 }
9499
9500 /* Set-Cookie headers only have the name in the first attr=value part */
9501 if (!list)
9502 break;
9503 }
9504
9505 return NULL;
9506}
9507
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9508/* Iterate over all cookies present in a message. The context is stored in
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9509 * 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]9510 * 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]9511 * the direction, multiple cookies may be parsed on the same line or not.
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9512 * 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]9513 * Accepts exactly 1 argument of type string. If the input options indicate
9514 * that no iterating is desired, then only last value is fetched if any.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9515 */
9516static int
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9517smp_fetch_cookie(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9518 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9519{
9520 struct http_txn *txn = l7;
9521 struct hdr_idx *idx = &txn->hdr_idx;
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9522 struct hdr_ctx *ctx = smp->ctx.a[2];
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9523 const struct http_msg *msg;
9524 const char *hdr_name;
9525 int hdr_name_len;
9526 char *sol;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9527 int occ = 0;
9528 int found = 0;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9529
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9530 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9531 return 0;
9532
Willy Tarreaua890d072013-04-02 12:01:06 +0200[diff] [blame]9533 if (!ctx) {
9534 /* first call */
9535 ctx = &static_hdr_ctx;
9536 ctx->idx = 0;
9537 smp->ctx.a[2] = ctx;
9538 }
9539
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9540 CHECK_HTTP_MESSAGE_FIRST();
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9541
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9542 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9543 msg = &txn->req;
9544 hdr_name = "Cookie";
9545 hdr_name_len = 6;
9546 } else {
9547 msg = &txn->rsp;
9548 hdr_name = "Set-Cookie";
9549 hdr_name_len = 10;
9550 }
9551
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9552 if (!occ && !(opt & SMP_OPT_ITERATE))
9553 /* no explicit occurrence and single fetch => last cookie by default */
9554 occ = -1;
9555
9556 /* OK so basically here, either we want only one value and it's the
9557 * last one, or we want to iterate over all of them and we fetch the
9558 * next one.
9559 */
9560
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9561 sol = msg->chn->buf->p;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9562 if (!(smp->flags & SMP_F_NOT_LAST)) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9563 /* search for the header from the beginning, we must first initialize
9564 * the search parameters.
9565 */
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9566 smp->ctx.a[0] = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9567 ctx->idx = 0;
9568 }
9569
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9570 smp->flags |= SMP_F_VOL_HDR;
9571
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9572 while (1) {
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9573 /* Note: smp->ctx.a[0] == NULL every time we need to fetch a new header */
9574 if (!smp->ctx.a[0]) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9575 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, ctx))
9576 goto out;
9577
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9578 if (ctx->vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9579 continue;
9580
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9581 smp->ctx.a[0] = ctx->line + ctx->val;
9582 smp->ctx.a[1] = smp->ctx.a[0] + ctx->vlen;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9583 }
9584
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9585 smp->type = SMP_T_CSTR;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9586 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]9587 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9588 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9589 &smp->data.str.str,
9590 &smp->data.str.len);
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9591 if (smp->ctx.a[0]) {
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9592 found = 1;
9593 if (occ >= 0) {
9594 /* one value was returned into smp->data.str.{str,len} */
9595 smp->flags |= SMP_F_NOT_LAST;
9596 return 1;
9597 }
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9598 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9599 /* if we're looking for last occurrence, let's loop */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9600 }
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9601 /* all cookie headers and values were scanned. If we're looking for the
9602 * last occurrence, we may return it now.
9603 */
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9604 out:
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9605 smp->flags &= ~SMP_F_NOT_LAST;
Willy Tarreau28376d62012-04-26 21:26:10 +0200[diff] [blame]9606 return found;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9607}
9608
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9609/* Iterate over all cookies present in a request to count how many occurrences
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9610 * match the name in args and args->data.str.len. If <multi> is non-null, then
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9611 * multiple cookies may be parsed on the same line.
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9612 * Accepts exactly 1 argument of type string.
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9613 */
9614static int
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]9615smp_fetch_cookie_cnt(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9616 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9617{
9618 struct http_txn *txn = l7;
9619 struct hdr_idx *idx = &txn->hdr_idx;
9620 struct hdr_ctx ctx;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9621 const struct http_msg *msg;
9622 const char *hdr_name;
9623 int hdr_name_len;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9624 int cnt;
9625 char *val_beg, *val_end;
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9626 char *sol;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9627
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9628 if (!args || args->type != ARGT_STR)
Willy Tarreau34db1082012-04-19 17:16:54 +0200[diff] [blame]9629 return 0;
9630
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9631 CHECK_HTTP_MESSAGE_FIRST();
9632
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9633 if ((opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ) {
Willy Tarreaue333ec92012-04-16 16:26:40 +0200[diff] [blame]9634 msg = &txn->req;
9635 hdr_name = "Cookie";
9636 hdr_name_len = 6;
9637 } else {
9638 msg = &txn->rsp;
9639 hdr_name = "Set-Cookie";
9640 hdr_name_len = 10;
9641 }
9642
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9643 sol = msg->chn->buf->p;
Willy Tarreau46787ed2012-04-11 17:28:40 +0200[diff] [blame]9644 val_end = val_beg = NULL;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9645 ctx.idx = 0;
9646 cnt = 0;
9647
9648 while (1) {
9649 /* Note: val_beg == NULL every time we need to fetch a new header */
9650 if (!val_beg) {
9651 if (!http_find_header2(hdr_name, hdr_name_len, sol, idx, &ctx))
9652 break;
9653
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9654 if (ctx.vlen < args->data.str.len + 1)
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9655 continue;
9656
9657 val_beg = ctx.line + ctx.val;
9658 val_end = val_beg + ctx.vlen;
9659 }
9660
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9661 smp->type = SMP_T_CSTR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9662 while ((val_beg = extract_cookie_value(val_beg, val_end,
Willy Tarreau24e32d82012-04-23 23:55:44 +0200[diff] [blame]9663 args->data.str.str, args->data.str.len,
Willy Tarreau32a6f2e2012-04-25 10:13:36 +0200[diff] [blame]9664 (opt & SMP_OPT_DIR) == SMP_OPT_DIR_REQ,
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9665 &smp->data.str.str,
9666 &smp->data.str.len))) {
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9667 cnt++;
9668 }
9669 }
9670
Willy Tarreauf853c462012-04-23 18:53:56 +0200[diff] [blame]9671 smp->data.uint = cnt;
Willy Tarreau37406352012-04-23 16:16:37 +0200[diff] [blame]9672 smp->flags |= SMP_F_VOL_HDR;
Willy Tarreau04aa6a92012-04-06 18:57:55 +0200[diff] [blame]9673 return 1;
9674}
9675
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9676/* Fetch an cookie's integer value. The integer value is returned. It
9677 * takes a mandatory argument of type string. It relies on smp_fetch_cookie().
9678 */
9679static int
9680smp_fetch_cookie_val(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9681 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9682{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9683 int ret = smp_fetch_cookie(px, l4, l7, opt, args, smp, kw);
Willy Tarreau51539362012-05-08 12:46:28 +0200[diff] [blame]9684
9685 if (ret > 0) {
9686 smp->type = SMP_T_UINT;
9687 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9688 }
9689
9690 return ret;
9691}
9692
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]9693/************************************************************************/
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]9694/* The code below is dedicated to sample fetches */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9695/************************************************************************/
9696
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9697/*
9698 * Given a path string and its length, find the position of beginning of the
9699 * query string. Returns NULL if no query string is found in the path.
9700 *
9701 * Example: if path = "/foo/bar/fubar?yo=mama;ye=daddy", and n = 22:
9702 *
9703 * find_query_string(path, n) points to "yo=mama;ye=daddy" string.
9704 */
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9705static inline char *find_param_list(char *path, size_t path_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9706{
9707 char *p;
Emeric Brun485479d2010-09-23 18:02:19 +0200[diff] [blame]9708
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9709 p = memchr(path, delim, path_l);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9710 return p ? p + 1 : NULL;
9711}
9712
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9713static inline int is_param_delimiter(char c, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9714{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9715 return c == '&' || c == ';' || c == delim;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9716}
9717
9718/*
9719 * Given a url parameter, find the starting position of the first occurence,
9720 * or NULL if the parameter is not found.
9721 *
9722 * Example: if query_string is "yo=mama;ye=daddy" and url_param_name is "ye",
9723 * the function will return query_string+8.
9724 */
9725static char*
9726find_url_param_pos(char* query_string, size_t query_string_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9727 char* url_param_name, size_t url_param_name_l,
9728 char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9729{
9730 char *pos, *last;
9731
9732 pos = query_string;
9733 last = query_string + query_string_l - url_param_name_l - 1;
9734
9735 while (pos <= last) {
9736 if (pos[url_param_name_l] == '=') {
9737 if (memcmp(pos, url_param_name, url_param_name_l) == 0)
9738 return pos;
9739 pos += url_param_name_l + 1;
9740 }
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9741 while (pos <= last && !is_param_delimiter(*pos, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9742 pos++;
9743 pos++;
9744 }
9745 return NULL;
9746}
9747
9748/*
9749 * Given a url parameter name, returns its value and size into *value and
9750 * *value_l respectively, and returns non-zero. If the parameter is not found,
9751 * zero is returned and value/value_l are not touched.
9752 */
9753static int
9754find_url_param_value(char* path, size_t path_l,
9755 char* url_param_name, size_t url_param_name_l,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9756 char** value, int* value_l, char delim)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9757{
9758 char *query_string, *qs_end;
9759 char *arg_start;
9760 char *value_start, *value_end;
9761
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9762 query_string = find_param_list(path, path_l, delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9763 if (!query_string)
9764 return 0;
9765
9766 qs_end = path + path_l;
9767 arg_start = find_url_param_pos(query_string, qs_end - query_string,
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9768 url_param_name, url_param_name_l,
9769 delim);
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9770 if (!arg_start)
9771 return 0;
9772
9773 value_start = arg_start + url_param_name_l + 1;
9774 value_end = value_start;
9775
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9776 while ((value_end < qs_end) && !is_param_delimiter(*value_end, delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9777 value_end++;
9778
9779 *value = value_start;
9780 *value_l = value_end - value_start;
Willy Tarreau00134332011-01-04 14:57:34 +0100[diff] [blame]9781 return value_end != value_start;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9782}
9783
9784static int
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9785smp_fetch_url_param(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9786 const struct arg *args, struct sample *smp, const char *kw)
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9787{
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9788 char delim = '?';
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9789 struct http_txn *txn = l7;
9790 struct http_msg *msg = &txn->req;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9791
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9792 if (!args || args[0].type != ARGT_STR ||
9793 (args[1].type && args[1].type != ARGT_STR))
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9794 return 0;
9795
9796 CHECK_HTTP_MESSAGE_FIRST();
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9797
bedis4c75cca2012-10-05 08:38:24 +0200[diff] [blame]9798 if (args[1].type)
9799 delim = *args[1].data.str.str;
9800
Willy Tarreau9b28e032012-10-12 23:49:43 +0200[diff] [blame]9801 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]9802 args->data.str.str, args->data.str.len,
9803 &smp->data.str.str, &smp->data.str.len,
9804 delim))
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9805 return 0;
9806
Willy Tarreaub8c8f1f2012-04-23 22:38:26 +0200[diff] [blame]9807 smp->type = SMP_T_CSTR;
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9808 smp->flags = SMP_F_VOL_1ST;
David Cournapeau16023ee2010-12-23 20:55:41 +0900[diff] [blame]9809 return 1;
9810}
9811
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9812/* Return the signed integer value for the specified url parameter (see url_param
9813 * above).
9814 */
9815static int
9816smp_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]9817 const struct arg *args, struct sample *smp, const char *kw)
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9818{
Willy Tarreauef38c392013-07-22 16:29:32 +0200[diff] [blame]9819 int ret = smp_fetch_url_param(px, l4, l7, opt, args, smp, kw);
Willy Tarreaua9fddca2012-07-31 07:51:48 +0200[diff] [blame]9820
9821 if (ret > 0) {
9822 smp->type = SMP_T_UINT;
9823 smp->data.uint = strl2ic(smp->data.str.str, smp->data.str.len);
9824 }
9825
9826 return ret;
9827}
9828
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9829/* This produces a 32-bit hash of the concatenation of the first occurrence of
9830 * the Host header followed by the path component if it begins with a slash ('/').
9831 * This means that '*' will not be added, resulting in exactly the first Host
9832 * entry. If no Host header is found, then the path is used. The resulting value
9833 * is hashed using the url hash followed by a full avalanche hash and provides a
9834 * 32-bit integer value. This fetch is useful for tracking per-URL activity on
9835 * high-traffic sites without having to store whole paths.
9836 * this differs from the base32 functions in that it includes the url parameters
9837 * as well as the path
9838 */
9839static int
9840smp_fetch_url32(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]9841 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9842{
9843 struct http_txn *txn = l7;
9844 struct hdr_ctx ctx;
9845 unsigned int hash = 0;
9846 char *ptr, *beg, *end;
9847 int len;
9848
9849 CHECK_HTTP_MESSAGE_FIRST();
9850
9851 ctx.idx = 0;
9852 if (http_find_header2("Host", 4, txn->req.chn->buf->p + txn->req.sol, &txn->hdr_idx, &ctx)) {
9853 /* OK we have the header value in ctx.line+ctx.val for ctx.vlen bytes */
9854 ptr = ctx.line + ctx.val;
9855 len = ctx.vlen;
9856 while (len--)
9857 hash = *(ptr++) + (hash << 6) + (hash << 16) - hash;
9858 }
9859
9860 /* now retrieve the path */
9861 end = txn->req.chn->buf->p + txn->req.sol + txn->req.sl.rq.u + txn->req.sl.rq.u_l;
9862 beg = http_get_path(txn);
9863 if (!beg)
9864 beg = end;
9865
9866 for (ptr = beg; ptr < end ; ptr++);
9867
9868 if (beg < ptr && *beg == '/') {
9869 while (beg < ptr)
9870 hash = *(beg++) + (hash << 6) + (hash << 16) - hash;
9871 }
9872 hash = full_hash(hash);
9873
9874 smp->type = SMP_T_UINT;
9875 smp->data.uint = hash;
9876 smp->flags = SMP_F_VOL_1ST;
9877 return 1;
9878}
9879
9880/* This concatenates the source address with the 32-bit hash of the Host and
9881 * URL as returned by smp_fetch_base32(). The idea is to have per-source and
9882 * per-url counters. The result is a binary block from 8 to 20 bytes depending
9883 * on the source address length. The URL hash is stored before the address so
9884 * that in environments where IPv6 is insignificant, truncating the output to
9885 * 8 bytes would still work.
9886 */
9887static int
9888smp_fetch_url32_src(struct proxy *px, struct session *l4, void *l7, unsigned int opt,
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]9889 const struct arg *args, struct sample *smp, const char *kw)
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9890{
9891 struct chunk *temp;
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9892 struct connection *cli_conn = objt_conn(l4->si[0].end);
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9893
Willy Tarreaue155ec22013-11-18 18:33:22 +0100[diff] [blame]9894 if (!smp_fetch_url32(px, l4, l7, opt, args, smp, kw))
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9895 return 0;
9896
9897 temp = get_trash_chunk();
9898 memcpy(temp->str + temp->len, &smp->data.uint, sizeof(smp->data.uint));
9899 temp->len += sizeof(smp->data.uint);
9900
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9901 switch (cli_conn->addr.from.ss_family) {
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]9902 case AF_INET:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9903 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]9904 temp->len += 4;
9905 break;
9906 case AF_INET6:
Willy Tarreaub363a1f2013-10-01 10:45:07 +0200[diff] [blame]9907 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]9908 temp->len += 16;
9909 break;
9910 default:
9911 return 0;
9912 }
9913
9914 smp->data.str = *temp;
9915 smp->type = SMP_T_BIN;
9916 return 1;
9917}
9918
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9919/* This function is used to validate the arguments passed to any "hdr" fetch
9920 * keyword. These keywords support an optional positive or negative occurrence
9921 * number. We must ensure that the number is greater than -MAX_HDR_HISTORY. It
9922 * is assumed that the types are already the correct ones. Returns 0 on error,
9923 * non-zero if OK. If <err> is not NULL, it will be filled with a pointer to an
9924 * error message in case of error, that the caller is responsible for freeing.
9925 * The initial location must either be freeable or NULL.
9926 */
9927static int val_hdr(struct arg *arg, char **err_msg)
9928{
9929 if (arg && arg[1].type == ARGT_SINT && arg[1].data.sint < -MAX_HDR_HISTORY) {
Willy Tarreaueb6cead2012-09-20 19:43:14 +0200[diff] [blame]9930 memprintf(err_msg, "header occurrence must be >= %d", -MAX_HDR_HISTORY);
Willy Tarreau185b5c42012-04-26 15:11:51 +0200[diff] [blame]9931 return 0;
9932 }
9933 return 1;
9934}
9935
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]9936/* takes an UINT value on input supposed to represent the time since EPOCH,
9937 * adds an optional offset found in args[0] and emits a string representing
9938 * the date in RFC-1123/5322 format.
9939 */
9940static int sample_conv_http_date(const struct arg *args, struct sample *smp)
9941{
9942 const char day[7][4] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
9943 const char mon[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
9944 struct chunk *temp;
9945 struct tm *tm;
9946 time_t curr_date = smp->data.uint;
9947
9948 /* add offset */
9949 if (args && (args[0].type == ARGT_SINT || args[0].type == ARGT_UINT))
9950 curr_date += args[0].data.sint;
9951
9952 tm = gmtime(&curr_date);
9953
9954 temp = get_trash_chunk();
9955 temp->len = snprintf(temp->str, temp->size - temp->len,
9956 "%s, %02d %s %04d %02d:%02d:%02d GMT",
9957 day[tm->tm_wday], tm->tm_mday, mon[tm->tm_mon], 1900+tm->tm_year,
9958 tm->tm_hour, tm->tm_min, tm->tm_sec);
9959
9960 smp->data.str = *temp;
9961 smp->type = SMP_T_STR;
9962 return 1;
9963}
9964
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]9965/************************************************************************/
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9966/* All supported ACL keywords must be declared here. */
9967/************************************************************************/
9968
9969/* Note: must not be declared <const> as its list will be overwritten.
9970 * Please take care of keeping this list alphabetically sorted.
9971 */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]9972static struct acl_kw_list acl_kws = {ILH, {
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9973 { "base", "base", pat_parse_str, pat_match_str },
9974 { "base_beg", "base", pat_parse_str, pat_match_beg },
9975 { "base_dir", "base", pat_parse_str, pat_match_dir },
9976 { "base_dom", "base", pat_parse_str, pat_match_dom },
9977 { "base_end", "base", pat_parse_str, pat_match_end },
9978 { "base_len", "base", pat_parse_int, pat_match_len },
9979 { "base_reg", "base", pat_parse_reg, pat_match_reg },
9980 { "base_sub", "base", pat_parse_str, pat_match_sub },
Willy Tarreaua7ad50c2012-04-29 15:39:40 +0200[diff] [blame]9981
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9982 { "cook", "req.cook", pat_parse_str, pat_match_str },
9983 { "cook_beg", "req.cook", pat_parse_str, pat_match_beg },
9984 { "cook_dir", "req.cook", pat_parse_str, pat_match_dir },
9985 { "cook_dom", "req.cook", pat_parse_str, pat_match_dom },
9986 { "cook_end", "req.cook", pat_parse_str, pat_match_end },
9987 { "cook_len", "req.cook", pat_parse_int, pat_match_len },
9988 { "cook_reg", "req.cook", pat_parse_reg, pat_match_reg },
9989 { "cook_sub", "req.cook", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9990
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]9991 { "hdr", "req.hdr", pat_parse_str, pat_match_str },
9992 { "hdr_beg", "req.hdr", pat_parse_str, pat_match_beg },
9993 { "hdr_dir", "req.hdr", pat_parse_str, pat_match_dir },
9994 { "hdr_dom", "req.hdr", pat_parse_str, pat_match_dom },
9995 { "hdr_end", "req.hdr", pat_parse_str, pat_match_end },
9996 { "hdr_len", "req.hdr", pat_parse_int, pat_match_len },
9997 { "hdr_reg", "req.hdr", pat_parse_reg, pat_match_reg },
9998 { "hdr_sub", "req.hdr", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]9999
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10000 { "http_auth_group", NULL, pat_parse_strcat, pat_match_auth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10001
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10002 { "method", NULL, pat_parse_meth, pat_match_meth },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10003
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10004 { "path", "path", pat_parse_str, pat_match_str },
10005 { "path_beg", "path", pat_parse_str, pat_match_beg },
10006 { "path_dir", "path", pat_parse_str, pat_match_dir },
10007 { "path_dom", "path", pat_parse_str, pat_match_dom },
10008 { "path_end", "path", pat_parse_str, pat_match_end },
10009 { "path_len", "path", pat_parse_int, pat_match_len },
10010 { "path_reg", "path", pat_parse_reg, pat_match_reg },
10011 { "path_sub", "path", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10012
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10013 { "req_ver", "req.ver", pat_parse_str, pat_match_str },
10014 { "resp_ver", "res.ver", pat_parse_str, pat_match_str },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10015
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10016 { "scook", "res.cook", pat_parse_str, pat_match_str },
10017 { "scook_beg", "res.cook", pat_parse_str, pat_match_beg },
10018 { "scook_dir", "res.cook", pat_parse_str, pat_match_dir },
10019 { "scook_dom", "res.cook", pat_parse_str, pat_match_dom },
10020 { "scook_end", "res.cook", pat_parse_str, pat_match_end },
10021 { "scook_len", "res.cook", pat_parse_int, pat_match_len },
10022 { "scook_reg", "res.cook", pat_parse_reg, pat_match_reg },
10023 { "scook_sub", "res.cook", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10024
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10025 { "shdr", "res.hdr", pat_parse_str, pat_match_str },
10026 { "shdr_beg", "res.hdr", pat_parse_str, pat_match_beg },
10027 { "shdr_dir", "res.hdr", pat_parse_str, pat_match_dir },
10028 { "shdr_dom", "res.hdr", pat_parse_str, pat_match_dom },
10029 { "shdr_end", "res.hdr", pat_parse_str, pat_match_end },
10030 { "shdr_len", "res.hdr", pat_parse_int, pat_match_len },
10031 { "shdr_reg", "res.hdr", pat_parse_reg, pat_match_reg },
10032 { "shdr_sub", "res.hdr", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10033
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10034 { "url", "url", pat_parse_str, pat_match_str },
10035 { "url_beg", "url", pat_parse_str, pat_match_beg },
10036 { "url_dir", "url", pat_parse_str, pat_match_dir },
10037 { "url_dom", "url", pat_parse_str, pat_match_dom },
10038 { "url_end", "url", pat_parse_str, pat_match_end },
10039 { "url_len", "url", pat_parse_int, pat_match_len },
10040 { "url_reg", "url", pat_parse_reg, pat_match_reg },
10041 { "url_sub", "url", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10042
Thierry FOURNIERa65b3432013-11-28 18:22:00 +0100[diff] [blame]10043 { "urlp", "urlp", pat_parse_str, pat_match_str },
10044 { "urlp_beg", "urlp", pat_parse_str, pat_match_beg },
10045 { "urlp_dir", "urlp", pat_parse_str, pat_match_dir },
10046 { "urlp_dom", "urlp", pat_parse_str, pat_match_dom },
10047 { "urlp_end", "urlp", pat_parse_str, pat_match_end },
10048 { "urlp_len", "urlp", pat_parse_int, pat_match_len },
10049 { "urlp_reg", "urlp", pat_parse_reg, pat_match_reg },
10050 { "urlp_sub", "urlp", pat_parse_str, pat_match_sub },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10051
Willy Tarreau8ed669b2013-01-11 15:49:37 +0100[diff] [blame]10052 { /* END */ },
Willy Tarreau25c1ebc2012-04-25 16:21:44 +0200[diff] [blame]10053}};
10054
10055/************************************************************************/
10056/* All supported pattern keywords must be declared here. */
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10057/************************************************************************/
10058/* Note: must not be declared <const> as its list will be overwritten */
Willy Tarreaudc13c112013-06-21 23:16:39 +0200[diff] [blame]10059static struct sample_fetch_kw_list sample_fetch_keywords = {ILH, {
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10060 { "base", smp_fetch_base, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10061 { "base32", smp_fetch_base32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10062 { "base32+src", smp_fetch_base32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
10063
10064 /* cookie is valid in both directions (eg: for "stick ...") but cook*
10065 * are only here to match the ACL's name, are request-only and are used
10066 * for ACL compatibility only.
10067 */
10068 { "cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10069 { "cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
10070 { "cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10071 { "cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10072
10073 /* hdr is valid in both directions (eg: for "stick ...") but hdr_* are
10074 * only here to match the ACL's name, are request-only and are used for
10075 * ACL compatibility only.
10076 */
10077 { "hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV|SMP_USE_HRSHV },
10078 { "hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10079 { "hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10080 { "hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10081
Willy Tarreau0a0daec2013-04-02 22:44:58 +0200[diff] [blame]10082 { "http_auth", smp_fetch_http_auth, ARG1(1,USR), NULL, SMP_T_BOOL, SMP_USE_HRQHV },
10083 { "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]10084 { "http_first_req", smp_fetch_http_first_req, 0, NULL, SMP_T_BOOL, SMP_USE_HRQHP },
10085 { "method", smp_fetch_meth, 0, NULL, SMP_T_UINT, SMP_USE_HRQHP },
10086 { "path", smp_fetch_path, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10087
10088 /* HTTP protocol on the request path */
10089 { "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]10090 { "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]10091
10092 /* HTTP version on the request path */
10093 { "req.ver", smp_fetch_rqver, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10094 { "req_ver", smp_fetch_rqver, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10095
10096 /* HTTP version on the response path */
10097 { "res.ver", smp_fetch_stver, 0, NULL, SMP_T_CSTR, SMP_USE_HRSHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10098 { "resp_ver", smp_fetch_stver, 0, NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10099
Willy Tarreau18ed2562013-01-14 15:56:36 +0100[diff] [blame]10100 /* explicit req.{cook,hdr} are used to force the fetch direction to be request-only */
10101 { "req.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10102 { "req.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10103 { "req.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10104
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10105 { "req.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV },
10106 { "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]10107 { "req.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRQHV },
10108 { "req.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10109 { "req.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRQHV },
10110 { "req.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRQHV },
10111
10112 /* explicit req.{cook,hdr} are used to force the fetch direction to be response-only */
10113 { "res.cook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10114 { "res.cook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10115 { "res.cook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10116
Willy Tarreau04ff9f12013-06-10 18:39:42 +0200[diff] [blame]10117 { "res.fhdr", smp_fetch_fhdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10118 { "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]10119 { "res.hdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10120 { "res.hdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10121 { "res.hdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10122 { "res.hdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10123
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10124 /* scook is valid only on the response and is used for ACL compatibility */
10125 { "scook", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV },
10126 { "scook_cnt", smp_fetch_cookie_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10127 { "scook_val", smp_fetch_cookie_val, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10128 { "set-cookie", smp_fetch_cookie, ARG1(0,STR), NULL, SMP_T_CSTR, SMP_USE_HRSHV }, /* deprecated */
10129
10130 /* shdr is valid only on the response and is used for ACL compatibility */
10131 { "shdr", smp_fetch_hdr, ARG2(0,STR,SINT), val_hdr, SMP_T_CSTR, SMP_USE_HRSHV },
10132 { "shdr_cnt", smp_fetch_hdr_cnt, ARG1(0,STR), NULL, SMP_T_UINT, SMP_USE_HRSHV },
10133 { "shdr_ip", smp_fetch_hdr_ip, ARG2(0,STR,SINT), val_hdr, SMP_T_IPV4, SMP_USE_HRSHV },
10134 { "shdr_val", smp_fetch_hdr_val, ARG2(0,STR,SINT), val_hdr, SMP_T_UINT, SMP_USE_HRSHV },
10135
10136 { "status", smp_fetch_stcode, 0, NULL, SMP_T_UINT, SMP_USE_HRSHP },
10137 { "url", smp_fetch_url, 0, NULL, SMP_T_CSTR, SMP_USE_HRQHV },
Neil - HAProxy List39c63c52013-11-04 13:48:42 +0000[diff] [blame]10138 { "url32", smp_fetch_url32, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10139 { "url32+src", smp_fetch_url32_src, 0, NULL, SMP_T_BIN, SMP_USE_HRQHV },
Willy Tarreau409bcde2013-01-08 00:31:00 +0100[diff] [blame]10140 { "url_ip", smp_fetch_url_ip, 0, NULL, SMP_T_IPV4, SMP_USE_HRQHV },
10141 { "url_port", smp_fetch_url_port, 0, NULL, SMP_T_UINT, SMP_USE_HRQHV },
10142 { "url_param", smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10143 { "urlp" , smp_fetch_url_param, ARG2(1,STR,STR), NULL, SMP_T_CSTR, SMP_USE_HRQHV },
10144 { "urlp_val", smp_fetch_url_param_val, ARG2(1,STR,STR), NULL, SMP_T_UINT, SMP_USE_HRQHV },
10145 { /* END */ },
Willy Tarreau4a568972010-05-12 08:08:50 +0200[diff] [blame]10146}};
10147
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10148
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10149/* Note: must not be declared <const> as its list will be overwritten */
10150static struct sample_conv_kw_list sample_conv_kws = {ILH, {
10151 { "http_date", sample_conv_http_date, ARG1(0,SINT), NULL, SMP_T_UINT, SMP_T_STR },
10152 { NULL, NULL, 0, 0, 0 },
10153}};
10154
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10155__attribute__((constructor))
10156static void __http_protocol_init(void)
10157{
10158 acl_register_keywords(&acl_kws);
Willy Tarreau12785782012-04-27 21:37:17 +0200[diff] [blame]10159 sample_register_fetches(&sample_fetch_keywords);
Willy Tarreau276fae92013-07-25 14:36:01 +0200[diff] [blame]10160 sample_register_convs(&sample_conv_kws);
Willy Tarreau8797c062007-05-07 00:55:35 +0200[diff] [blame]10161}
10162
10163
Willy Tarreau58f10d72006-12-04 02:26:12 +0100[diff] [blame]10164/*
Willy Tarreaubaaee002006-06-26 02:48:02 +0200[diff] [blame]10165 * Local variables:
10166 * c-indent-level: 8
10167 * c-basic-offset: 8
10168 * End:
10169 */